JP6425554B2 - Electronic blood pressure monitor - Google Patents

Description

  The present invention relates to an electronic blood pressure monitor.

  An electronic sphygmomanometer that associates and stores measurement results of blood pressure and measurement date and time is widely used. In such an electronic blood pressure monitor, it is necessary to set the time (date and time) indicated by the built-in clock, but particularly for the elderly, setting operation of the clock is complicated, and it is convenient if the time of the clock can be set automatically. . Therefore, an electronic sphygmomanometer with a radio-wave clock function has been proposed that can automatically set or correct the date and time of a clock built in the device by receiving a standard radio wave operated by the Information Communication Research Organization. (See, for example, Patent Documents 1 and 2). The radio-controlled watch has a function of automatically receiving a standard radio wave once or a plurality of times at predetermined times every day, for example, and correcting the date and time indicated by the watch.

Patent No. 5169644 gazette Patent No. 5092781 gazette

  If the electronic sphygmomanometer that operates with batteries has the function of a radio clock, radio reception will be performed even when the battery is exhausted, so that the battery will be further depleted by radio reception that is not the original function of the sphygmomanometer. become.

  Therefore, it is an object of the present invention to provide an electronic sphygmomanometer that has the function of a radio-controlled watch and does not promote battery consumption by radio reception when the battery is exhausted.

  The electronic sphygmomanometer according to the present invention includes a battery, a blood pressure measurement unit that measures blood pressure using power supplied from the battery, an antenna that receives a radio wave including time information, a clock unit that clocks time, and blood pressure measurement An output unit that associates and outputs information on measurement results obtained by the unit and information on measurement time obtained from the timer unit; and a control unit that constitutes a control circuit, the control unit including a clock control unit and a reception control unit The clock control unit performs a reception operation to set the time of the timekeeping unit based on time information obtained by causing the antenna to receive radio waves at the scheduled reception time, and the reception control unit performs the remaining capacity of the battery. Accordingly, the execution of the reception operation is restricted.

In the electronic sphygmomanometer described above, the reception control unit preferably reduces the number of times of execution of the reception operation stepwise in accordance with a voltage change of the battery.
The reception control unit preferably suspends the execution of the reception operation when the voltage of the battery is less than or equal to a predetermined threshold.
When the reception of the radio wave by the antenna is not successful at the scheduled reception time, the clock control unit causes the antenna to repeatedly receive the radio wave for a predetermined reception period, and the reception control unit responds to the voltage change of the battery. It is preferable to shorten the reception period.

  According to the electronic sphygmomanometer described above, even when the battery has the function of radio wave watch, the consumption of the battery is not promoted by the radio wave reception when the battery is exhausted.

FIG. 2 is a perspective view showing the appearance of the electronic blood pressure monitor 10. FIG. 2 is a functional block diagram of the electronic blood pressure monitor 10. FIG. 2 is a plan view showing an internal configuration of the electronic blood pressure monitor 10. FIG. 2 is a cross-sectional view showing an internal configuration of the electronic blood pressure monitor 10. 5 is a flowchart showing an example of a blood pressure measurement operation by the electronic blood pressure monitor 10; 5 is a flowchart showing an example of mode switching processing by the electronic blood pressure monitor 10; 5 is a flowchart showing an example of radio wave reception processing by the electronic blood pressure monitor 10; 5 is a flowchart showing an example of year data determination processing by the electronic blood pressure monitor 10; 5 is a flowchart showing an example of reception start determination processing by the electronic blood pressure monitor 10; 5 is a flowchart showing an example of reception restriction processing by the electronic blood pressure monitor 10;

  Hereinafter, the electronic blood pressure monitor will be described with reference to the drawings. However, it should be understood that the present invention is not limited to the embodiments described in the drawings or below.

  FIG. 1 is a perspective view showing the appearance of the electronic blood pressure monitor 10. FIG. 2 is a functional block diagram of the electronic blood pressure monitor 10.

  The electronic sphygmomanometer 10 has a body case 20, an air tube 70 and a cuff 80. The cuff 80 contains a gas bag (not shown), and is fixed to a measurement target such as the upper arm of a user (subject) at the time of use. The air tube 70 connects the gas bag in the cuff 80 and the main body case 20. The electronic sphygmomanometer referred to in this specification is not limited to the upper arm type, and may be used by being fixed to another measured part such as the user's wrist.

  As shown in FIG. 1, the electronic blood pressure monitor 10 has a display unit 21 and an operation unit 22 on the front of the main body case 20. Further, as shown in FIG. 2, the electronic sphygmomanometer 10 includes a pressure pump 23, a drive circuit 24, a pressure sensor 25, an oscillation circuit 26, an electromagnetic control valve 27, a drive circuit 28, and a power supply unit inside the body case 20. 29, a radio controlled clock 30, an alarm 40, a buzzer 45, a memory 50, and a control unit 60.

  The electronic sphygmomanometer 10 is an electronic sphygmomanometer with a radio wave clock function equipped with an antenna for receiving a standard radio wave, receives a standard radio wave including time information, and corrects the time (date and time) indicated by the built-in clock unit. By this, the current time is clocked. The “time information” may include not only “hour”, “minute” and “second” but also information of “year”, “month” and “day”. Also, "time information" may further include information on "day of the week".

  The display unit 21 is configured of, for example, a liquid crystal display panel, and is disposed on the front upper side of the main body case 20. The display unit 21 displays a measurement value (measurement result) 21A of systolic and diastolic blood pressure, a measurement value 21B of a pulse, a current time 21C including a measurement date, a blood pressure classification 21D, and the like. Among them, the blood pressure classification 21D indicates whether the measured value is normal blood pressure, high normal value or high blood pressure, based on, for example, the high blood pressure standard formulated by the Japanese Society of Hypertension. The display unit 21 can also display the measurement values measured in the past and stored in the memory 50 in the electronic blood pressure monitor 10. In addition, when blood pressure measurement is not performed, only the current time (or date and time) can be displayed on the display unit 21 and the electronic blood pressure monitor 10 can be used as a watch.

  The display unit 21 is an example of an output unit that associates and outputs information on the measurement result by the blood pressure measurement unit and information on the measurement time obtained from the timing unit. The electronic sphygmomanometer may have a built-in printer so that information on measurement results and measurement time (measurement date and time) may be printed out, or the electronic sphygmomanometer may be wired or wireless to an external device such as a PC or a portable terminal. It may be made connectable and data of measurement result and measurement time (measurement date and time) may be outputted to an external device.

  The operation unit 22 is configured by various switches (buttons) operated by the user, and is disposed on the front lower side of the main body case 20. The operation unit 22 includes a measurement / stop switch 22A, a forward switch 22B, a back switch 22C, a timepiece switch 22D, a user selection switch 22E, and a morning / night changeover switch 22F.

  The measurement / stop switch 22A is a switch (an example of a measurement switch) for starting or stopping blood pressure measurement, and doubles as a power switch of the electronic blood pressure monitor 10. For example, when the user manually sets the time (date and time) of the timer unit 35 in the control unit 60 incorporated in the electronic blood pressure monitor 10, the forward switch 22B and the backward switch 22C may select one of a plurality of candidates. Used for the operation to select.

  The clock switch 22D is an example of a common switch to which the user can input an instruction regarding time setting. The clock switch 22D sets the time of the timekeeping unit 35 (time and date setting) by forcibly receiving the standard radio wave, the time setting (time and date setting) of the timekeeping unit 35 by manual operation of the user, and the ringing time of the alarm 40. Commonly used when the user inputs setting instructions. Since the area of the front of the main body case 20 where the switch can be arranged is limited, providing switches separately for inputting these instructions increases the number of switches and gives the user a complicated impression. As a result, individual switches become smaller and usability becomes worse. Therefore, in the electronic sphygmomanometer 10, switches for transitioning to three modes related to the clock such as forced reception of radio waves, manual time setting and alarm time setting are integrated in the clock switch 22D. Since the transition operation to each mode related to the watch is combined into one switch, the number of switches is reduced, and it is not necessary to give the user a complicated impression. Further, the blood pressure measurement operation is divided into the measurement / stop switch 22A and the time setting operation as the clock switch 22D, so that the user can intuitively understand the operation.

  The user selection switch 22E is used to select which user the measurement result is for when storing the measurement result in the memory 50. The electronic sphygmomanometer 10 can separately store the measured values of the two registered users in the memory 50, and the user selection switch 22E is used when reading the past measurement results in the memory 50. It is also used to select a person. The morning / night changeover switch 22F measures only those measured in a specific time zone corresponding to the morning among the past measurement results stored in the memory 50, or in a specific time zone corresponding to the night It is used when reading out and displaying only what has been done.

  3 and 4 are a plan view and a cross-sectional view showing the internal configuration of the electronic blood pressure monitor 10, respectively. FIG. 3 shows the electronic blood pressure monitor 10 in a state in which the front portion of the main body case 20, the circuit board in the main body case 20, and the display unit 21 are removed. Also, these figures show only some of the main components of the electronic blood pressure monitor 10.

  The air tube 70 is attached to the main body case 20 via a connector 71 provided at the left end 20 </ b> A in the main body case 20. The pressure pump 23, the pressure sensor 25, and the solenoid control valve 27 are an example of a blood pressure measurement unit, and are connected to the air bag in the cuff 80 via the air pipe 70 outside and inside the body case 20.

  The pressurizing pump 23 includes a pump unit 23A that pressurizes a gas bag in the cuff 80 by feeding a gas such as air to the cuff 80, and a motor unit 23B that drives the pump unit 23A. The pressurizing pump 23 is disposed with the pump portion 23A directed to the left end 20A side in the main body case 20 and the motor portion 23B including a metal object such as a coil directed to the right end 20B side in the main body case 20 There is. That is, the motor unit 23B is disposed at a position closer to the right end 20B than the pump unit 23A. The drive circuit 24 is a circuit for driving the pressure pump 23 based on a control signal supplied from the control unit 60. Note that, for example, a piezoelectric pump or the like that does not accompany the motor may be used as the pressure pump 23.

  The pressure sensor 25 is, for example, a capacitance type sensor, and the capacitance value changes in accordance with the pressure in the gas bag of the cuff 80. The oscillation circuit 26 connected to the pressure sensor 25 is a circuit for outputting to the control unit 60 a signal whose frequency changes due to a change in capacitance value of the pressure sensor 25. The pressure in the bladder of the cuff 80 is calculated from the change in frequency. In addition, as the pressure sensor 25, you may use what does not accompany an oscillation circuit, such as a semiconductor pressure sensor.

  The electromagnetic control valve (electromagnetic valve) 27 is a valve having a mechanism that includes metal things such as a coil and is opened and closed by moving an iron core with an electromagnet. The electromagnetic control valve 27 is either in the open state, in the shield state, or in a slightly open state of a valve other than the open state, depending on the presence or absence of energization and the pulse width of the control signal. The electromagnetic control valve 27 is, for example, a forced exhaust valve for forcibly exhausting the air in the cuff 80 at the end of measurement or at the time of stopping, and the cuff by exhausting the air in the cuff 80 pressurized during blood pressure measurement at a constant speed. Acts as a slow leak valve to gradually depress 80. The solenoid control valve 27 is disposed at a position closer to the right end 20 B in the main body case 20 than the motor portion 23 B of the pressure pump 23. The drive circuit 28 is a circuit for performing DC drive or frequency drive of the solenoid control valve 27 based on a control signal supplied from the control unit 60 to open or close the solenoid control valve 27. Instead of the electromagnetic control valve, a forced exhaust valve that realizes only the open state and the shield state, and a slow leak valve that realizes the depressurized state by mechanical operation such as rubber may be used.

  The power supply unit 29 has a DC jack 29A, a battery 29B, and a voltage drop detection unit 29C. The power cable (AC adapter) of the electronic blood pressure monitor 10 is connected to the DC jack 29A. The DC jack 29A is an example of a connection portion, and the connection portion with the power cable includes a metal. The DC jack 29A is disposed on the right end 20B side in the main body case 20, more precisely, at a position closer to the right end 20B in the main body case 20 than the motor portion 23B of the pressure pump 23. The electronic sphygmomanometer 10 operates using an external power supply connected to the DC jack 29A via a power cable, or the power supplied by the battery 29B. When the electronic blood pressure monitor 10 operates with the battery 29B, the voltage drop detection unit 29C detects the voltage drop of the battery 29B and outputs a detection signal to the control unit 60.

  The radio controlled watch 30 has an antenna 31 and a receiving circuit 32.

  The antenna 31 is an antenna that receives a radio wave including time information, and is disposed at the left end 20A in the main body case 20. The antenna 31 automatically receives a standard radio wave (for example, a long wave typified by a 40 kHz or 60 kHz JJY standard radio wave) at a predetermined time, for example, 2 am every day. Further, in the electronic blood pressure monitor 10, reception of radio waves can also be started by the operation of the user, and the antenna 31 receives standard radio waves even when the clock switch 22D is operated. In addition, as the antenna 31, you may provide not only a standard electromagnetic wave but the antenna which receives the other electromagnetic wave containing time information.

  Among the above-described components, in particular, the motor unit 23B, the electromagnetic control valve 27, and the DC jack 29A are electronic components including a metal. Since metal objects reflect radio waves, if such an electronic component is disposed in the vicinity of the antenna 31, the reception performance of the antenna 31 may be adversely affected. Therefore, as shown in FIG. 3 and FIG. 4, in the electronic blood pressure monitor 10, the antenna 31 is disposed on the left end 20A side (left from the center in the body case 20) in the body case 20 and includes a metal The portion 23B, the electromagnetic control valve 27 and the DC jack 29A are concentrated on the right end 20B side in the main body case 20 (rightward from the center in the main body case 20). The left end 20A is an example of one end, and the right end 20B is an example of the other end opposite to the one end. In other words, the antenna 31 is disposed at a position as far as possible in the main body case 20 so as to face the electronic component including the metal. Thereby, the influence of the metal of each electronic component is suppressed, and the antenna 31 can stably receive the standard radio wave, so that the certainty of the time setting of the radio controlled timepiece 30 is increased.

  The receiving circuit 32 is a circuit for removing the carrier wave component from the received signal of the standard radio wave received by the antenna 31 and extracting information (time information) of date and time (date and time). The information on the date and time extracted by the receiving circuit 32 is output to the clocking unit 35 of the control unit 60.

  The alarm 40 is a mechanism for emitting a plurality of types of alarm sounds such as a beep sound and a melody at a preset time to prompt the user to measure blood pressure. The alarm 40 is configured to be able to change the volume in multiple stages.

  In general, the alarm sound of the clock is fixed to one type including the volume, but in the case of the electronic blood pressure monitor, it is conceivable that a plurality of persons use one device at different times, so one type The alarm sound can not be used to determine which user has set the alarm. Also, if the volume of the alarm sound is fixed, the alarm can not be sounded at an appropriate volume according to the ringing time zone and the surrounding environment at that time. Therefore, in the electronic blood pressure monitor 10, a plurality of ringing times of the alarm 40 can be set, and the type and volume of the alarm sound can be individually selected for each alarm setting (that is, for each user). For example, each user can select any of beep sound A, beep sound B, melody A and melody B as an alarm sound, and either high, middle or low as a sound volume for each alarm setting. Then, when the current time indicated by the clock unit 35 reaches the ringing time of the alarm, the alarm 40 rings with the alarm sound and volume selected for the ringing time. In this way, each user can determine which user set the alarm, even if a single device is used by a plurality of people, depending on the ringing time zone and the surrounding environment at that time. It is also possible to sound the alarm 40 at an appropriate volume.

  The buzzer 45 generates a beep sound as needed during the blood pressure measurement operation of the electronic blood pressure monitor 10 to alert the user. The buzzer 45 is configured to be capable of generating a plurality of types of beep sounds.

  As shown by reference numerals 21A and 21D in FIG. 1, in the electronic sphygmomanometer 10, the measured value of blood pressure and its blood pressure classification are displayed on the display unit 21. For example, when the surroundings are dark and the display unit 21 is difficult to see, these results The display is confusing for the user. Therefore, when the measurement result is displayed on the display unit 21, the buzzer 45 may generate different beep sounds according to the blood pressure classification. In this case, for example, when the measured value of blood pressure is included in the ranges of high blood pressure, normal high value, and normal blood pressure, the buzzer 45 performs beep sound A, beep sound B, and beep sound C under the control of the control unit 60, respectively. generate. Alternatively, the beep may not be generated when the blood pressure measurement value is normal blood pressure. Thereby, the user can easily know the blood pressure classification of the measurement value.

  Note that the buzzer 45 may generate different beep sounds according to which blood pressure classification the average value of a plurality of measured values is included instead of the measured value for each time. Alternatively, without displaying the blood pressure classification 21 D on the display unit 21, the user may be notified of the blood pressure classification only by the beep sound of the buzzer 45.

  In addition, the buzzer 45 may generate a beep when the reception of the standard radio wave by the antenna 31 is successful. Alternatively, a melody may be generated when reception is successful, and a beep may be generated when reception is unsuccessful. Generally, in the radio controlled watch, the success or failure of reception of the standard radio wave is indicated by an icon or the like on the display unit. However, for example, when the surroundings are dark and the display unit is difficult to see, the reception result is difficult for the user. By notifying the reception result of the standard radio wave by the antenna 31 with a beep sound, the user can easily receive the reception result without looking at the display unit 21 particularly when the reception is started by operating the clock switch 22D. I can know.

  The memory 50 stores information necessary for the operation of the electronic blood pressure monitor 10. In addition, the memory 50 is a history of measurement values of systolic blood pressure, diastolic blood pressure and pulse for each of two users corresponding to the user selection switch 22E so that the user can grasp the tendency of the change in blood pressure value. Remember. In particular, the memory 50 associates and stores information on measurement results such as blood pressure values and information on measurement time (measurement date and time) obtained from the timer unit 35. As the memory 50, for example, an external memory such as an EEP-ROM is used. Alternatively, instead of the memory 50, a memory function built in the control unit 60 may be used.

  The control unit 60 is configured as a control circuit including a CPU, a RAM, a ROM, and the like. The control unit 60 includes a timekeeping unit 35, a measurement control unit 61, a measured value calculation unit 62, a display control unit 63, a timepiece control unit 64, and a reception control unit 65 as functional blocks realized by the CPU.

  The clock unit 35 counts time (date and time) based on the time information extracted by the receiving circuit 32, and outputs data of the current time to the display control unit 63. The current time counted by the clock unit 35 includes the date and day of the week.

  When the user operates the measurement / stop switch 22A, the measurement control unit 61 pressurizes and depressurizes the cuff 80 to execute a measurement operation to measure the blood pressure. And control the electromagnetic control valve 27 and the like. At this time, the measurement control unit 61 predicts and calculates the user's systolic blood pressure while monitoring the pressure detected by the pressure sensor 25, and measures a pressure value exceeding the predicted value by a fixed amount, for example, a pressure 40 mmHg higher than the systolic blood pressure. The drive circuit 24 is controlled to pressurize the cuff 80. The measurement control unit 61 also supplies a control signal for controlling the opening and closing of the solenoid control valve 27 to the drive circuit 28 to control the exhaust of air in the cuff 80 by the solenoid control valve 27. In the measurement operation, more precisely, after the pressurization of the cuff 80 is started with the electromagnetic control valve 27 in the shielding state, the measurement value is calculated and displayed on the display unit 21 and the electromagnetic control valve 27 is opened. It refers to a series of operations until the air in the cuff 80 is exhausted in a state.

  In addition, the measurement control unit 61 sets the time (date and time) of the timekeeping unit 35 based on time information obtained by causing the antenna 31 to receive radio waves, while the pressure pump 23 and the drive circuit 24 are being performed. The power supply to the pressure sensor 25, the oscillation circuit 26, the solenoid control valve 27, and the drive circuit 28 is stopped. This is because when the motor unit 23B or the electromagnetic control valve 27 is energized, an electromagnetic noise is generated from the coil contained therein, and the electromagnetic noise may adversely affect the reception performance of the antenna 31. Since it is sufficient to operate each part such as the pressure pump 23 described above only at the time of blood pressure measurement, the generation of electromagnetic noise is suppressed by not energizing each part during radio wave reception. Thereby, since the antenna 31 can stably receive the standard radio wave, the certainty of the time setting of the radio controlled timepiece 30 is increased.

  The measurement value calculation unit 62 measures, for example, using an oscillometric method, based on data such as the start pressure value of each pulse wave detected from the change in the frequency of the signal generated by the oscillation circuit 26 and its amplitude value. The highest and lowest blood pressure of the person. Although the measurement value calculation unit 62 measures the blood pressure of the user in the process of depressurizing the cuff 80, the electronic blood pressure monitor as referred to in this specification may perform blood pressure measurement in the process of pressurizing the cuff. In addition, the measurement value calculation unit 62 also measures the pulse of the subject along with the blood pressure value, and further, based on the high blood pressure standard formulated by the Japanese Society for Hypertension, for example, any of the normal blood pressure, normal high value and high blood pressure measurement value. Determine if it is.

  The display control unit 63 displays the systolic blood pressure value, diastolic blood pressure value and pulse value measured by the measurement value calculation unit 62, the measurement time (measurement date and time) notified from the clock unit 35, and the measurement value calculation unit 62 at the time of blood pressure measurement. The blood pressure classification of the measurement result determined by the above is displayed on the display unit 21. Further, when the user selection switch 22E is operated, the display control unit 63 causes the display unit 21 to display the history of the measurement values stored in the memory 50 for the corresponding user. Further, when the blood pressure measurement is not performed, the display control unit 63 causes the display unit 21 to display the current time (date and time) notified from the time measuring unit 35. Furthermore, when the voltage drop detection unit 29C detects a voltage drop of the battery 29B, the display control unit 63 causes the display unit 21 to display a mark indicating that the battery voltage has dropped.

  FIG. 5 is a flow chart showing an example of the blood pressure measurement operation by the electronic blood pressure monitor 10. The processing flow shown in FIGS. 5 to 10 is executed by the CPU of the control unit 60 in accordance with a program stored in advance in the ROM of the control unit 60.

  At the time of blood pressure measurement, a user (a person to be measured) wears the cuff 80 on the upper arm and operates the measurement / stop switch 22A of the operation unit 22 to instruct the start of measurement. In response to this, the measurement control unit 61 first energizes the electromagnetic control valve 27 to put the electromagnetic control valve 27 in the shielding state (S11). Then, the measurement control unit 61 controls the drive circuit 24 to operate the pressure pump 23 and sends air into the cuff 80, whereby the pressure of the gas bag in the cuff 80 is a constant value of the predicted value of the systolic blood pressure. The cuff 80 is pressurized until the pressure value exceeds (for example, 40 mmHg) (S12). Thereafter, the measurement control unit 61 stops the pressure pump 23 and controls the drive circuit 28 to slightly open the electromagnetic control valve 27 (S13). Thereby, the air in the cuff 80 is exhausted at a constant speed by the electromagnetic control valve 27 functioning as a slow leak valve.

  While the cuff 80 is being depressurized, the measurement value calculation unit 62 measures the systolic blood pressure, diastolic blood pressure and pulse of the subject based on the frequency of the signal input from the oscillation circuit 26 (S14). When the measured values are determined, the display control unit 63 causes the display unit 21 to display the measurement results together with the measurement time (date and time) notified from the clock unit 35 (S15). In addition, when the user operates the user selection switch 22E, the measurement control unit 61 stores the measurement time (date and time) and the measurement result in the memory 50 in association with each other as history information for the corresponding user. (S16). Further, the measurement control unit 61 rapidly exhausts the air in the cuff 80 by deenergizing the electromagnetic control valve 27 and opening the electromagnetic control valve 27 (S17). Above, the measurement operation of the blood pressure by the electronic blood pressure monitor 10 is complete | finished.

  When the clock switch 22D is operated, the clock control unit 64 sets the time of the timer unit 35 by causing the antenna 31 to forcibly receive a radio wave according to the operation method, and the timer unit manually operated by the user. One of setting of 35 time and setting of ringing time of alarm 40 is started. That is, the clock control unit 64 shifts the electronic blood pressure monitor 10 to any one of the forced reception mode of radio waves, the manual time setting mode, and the alarm time setting mode. The setting of the time of the clock unit 35 includes the setting of the date (that is, the date and time is set).

  In the manual time setting mode, the clock control unit 64 sets the time of the timer unit 35 according to the operation of the user. In the alarm time setting mode, the clock control unit 64 sets the ringing time of the alarm 40 in accordance with the user's operation. Then, the clock control unit 64 causes the alarm 40 to sound when the current time indicated by the timer unit 35 matches the ringing time.

  In the forced reception mode, the clock control unit 64 performs a reception operation of setting the time of the timer unit 35 based on time information obtained by causing the antenna 31 to receive a radio wave. Specifically, the clock control unit 64 causes the antenna 31 to start reception of the standard radio wave, and the minute, minute, hour, day (total day from January 1), year, and day of the week included in the standard radio wave. Are extracted by the receiving circuit 32. Then, the clock control unit 64 obtains a plurality of sets of time information, using these pieces of information as one set of time information. Furthermore, the clock control unit 64 determines whether or not the plurality of sets of acquired time information represent different times by one minute or several minutes in accordance with the respective time intervals of acquisition (consistent determination). If there is consistency in the plurality of sets of time information, the clock control unit 64 considers that reception is successful, and sets the time of the timekeeping unit 35 using the time information. On the contrary, when there is no consistency, for example, when plural sets of time information indicate time of different days, the clock control unit 64 considers that reception failed, and the time information thereof is the time measuring unit Not used to set 35 times.

  In addition, even when the clock switch 22D is not operated, the clock control unit 64 is obtained by causing the antenna 31 to receive radio waves at a predetermined reception scheduled time of radio waves as in the case of the forced reception mode. The reception operation of setting the time of the timer unit 35 based on the time information is performed. Further, when the reception of the radio wave by the antenna 31 is not successful either in the forced reception mode or at the predetermined scheduled reception time, the clock control unit 64 receives the predetermined length. A radio wave is repeatedly received by the antenna 31 for a period only.

  The timekeeping unit 35 measures the time including the date, but in the electronic blood pressure monitor 10, the year values that can be set in the timekeeping unit 35 are limited within a specific range such as 30 years from the year of manufacture, for example There is. This is because when the user manually sets the time of the timekeeping unit 35, the switch 22B and the back switch 22C are used, so the range in which the year value can be set is narrowed to reduce the amount of operation by the user. In order to Even if radio waves are successfully received, the electronic sphygmomanometer 10 may determine the year value of the current time as the year data of the current time due to the influence of noise. Use limitations of year settable value.

  Specifically, in addition to the above-described consistency determination, the clock control unit 64 determines whether the year value obtained from the acquired time information is within a specific range that can be set in the timer unit 35. judge. Then, when the year value obtained from the acquired time information is not included in the specific range, the clock control unit 64 determines that the reception has an error. In this case, the clock control unit 64 does not use the time information for setting the time of the time measuring unit 35 (that is, does not determine the date and time), and causes the antenna 31 to receive radio waves again. This reduces the possibility that the timekeeping unit 35 is set to an incorrect date and time.

  FIG. 6 is a flowchart showing an example of the mode switching process by the electronic blood pressure monitor 10. The flow of FIG. 6 is performed when the clock switch 22D is pressed while the power of the electronic blood pressure monitor 10 is off.

  When the clock switch 22D is pressed, the clock control unit 64 detects the operation (S21). When the clock control unit 64 has pressed the clock switch 22D (Yes in S21) but does not detect that the state has continued for 2 seconds or more (No in S22), the electronic sphygmomanometer 10 is set to the alarm time setting mode Migrate to In the alarm time setting mode, the clock control unit 64 sets the ringing time of the alarm 40 according to the operation of the user (S23). When the setting is completed or the measurement / stop switch 22A is pressed halfway, the electronic blood pressure monitor 10 returns to the power-off state.

  On the other hand, when the clock control unit 64 detects that the clock switch 22D is pressed (Yes in S21) and the state continues for 2 seconds or more (Yes in S22), the electronic sphygmomanometer 10 enters the forced reception mode of radio waves. Migrate. Thus, the clock control unit 64 causes the antenna 31 to start reception of the standard radio wave (S24). At this time, when the clock control unit 64 detects that the clock switch 22D is pressed again (Yes in S25), the reception of the radio wave by the antenna 31 is stopped, and the electronic blood pressure monitor 10 is shifted to the manual time setting mode. . In the manual time setting mode, the clock control unit 64 sets the time of the timer unit 35 according to the operation of the user (S26). When the setting is completed or the measurement / stop switch 22A is pressed halfway, the electronic blood pressure monitor 10 returns to the power-off state.

  On the other hand, if the depression of the timepiece switch 22D is not detected during reception of the standard radio wave by the antenna 31 (No in S25), the clock control unit 64 determines whether the reception of the radio wave is successful (S27). When the radio wave is successfully received (Yes in S27), the clock control unit 64 corrects the date and time indicated by the time measuring unit 35 based on the time information obtained from the radio wave received by the antenna 31 (S28). The sphygmomanometer 10 is turned off. If the reception of the radio wave fails (No in S27), the clock control unit 64 turns off the electronic blood pressure monitor 10 without correcting the date and time indicated by the clock unit 35. Above, the mode switching process by the electronic blood pressure monitor 10 is completed.

  FIG. 7 is a flowchart showing an example of radio wave reception processing by the electronic blood pressure monitor 10. The flow in FIG. 7 is performed when the clock switch 22D is operated and the electronic blood pressure monitor 10 shifts to the forced reception mode, or when the current time indicated by the timer unit 35 reaches a predetermined reception time of the radio wave. Be done.

  The clock control unit 64 first causes the antenna 31 to receive the standard radio wave (S31). The required time is 1 minute, and when the reception of the hour, day (consecutive day from January 1), year and day of the week information (all time codes) is not completed (No in S32), S31 The clock control unit 64 continues the reception of the standard radio wave by the antenna 31. On the other hand, when the reception of all the time codes is completed (Yes in S32), the clock control unit 64 acquires date and time data (time information) extracted by the reception circuit 32 (S33). If there is an error in the date and time data acquired in S33 (No in S34), the process returns to S31, and the clock control unit 64 causes the antenna 31 to receive the standard radio wave again. On the other hand, when there is no error in the received data (Yes in S34), the clock control unit 64 stores the extracted time information in the memory 50, and updates the reception history (S35).

  Then, the clock control unit 64 refers to the memory 50 and determines whether the currently acquired time information and the previously acquired time information are consistent, that is, at the time interval of acquisition of both time information. In response, it is determined whether or not different time is represented by one minute or several minutes (S36). If the time information is not consistent (No in S36), the process returns to S31, and the clock control unit 64 causes the antenna 31 to receive the standard radio wave again. On the other hand, if the time information is consistent (Yes in S36), the clock control unit 64 sets the date and time of the timekeeping unit 35 using the time information (S37), and the electronic blood pressure monitor 10 is powered off. In the state of Above, the radio wave reception processing by the electronic blood pressure monitor 10 is completed.

  FIG. 8 is a flowchart showing an example of year data determination processing by the electronic blood pressure monitor 10. The flow of FIG. 8 is executed, for example, in the error determination of S34 in the flow of the radio wave reception process of FIG. 7.

  The clock control unit 64 acquires time information (date and time data) received by the antenna 31 and extracted by the receiving circuit 32 (S41). Then, the clock control unit 64 determines whether the year value (year data) in the time information is within a specific range that can be set in the timer unit 35 (S42). If the year value is not included in the specific range (No in S42), the clock control unit 64 determines that there is an error in the time information, and ends the process without determining the date and time data. Do. On the other hand, when the year value is included in the specific range (Yes in S42), the clock control unit 64 determines that the time information is correct time information (date and time data) (S43). This is the end of the year data determination process by the electronic blood pressure monitor 10.

  The reception control unit 65 controls so that the measurement operation and the reception operation are not performed simultaneously. This is because the main function of the electronic sphygmomanometer 10 is blood pressure measurement, and the necessity of simultaneously performing blood pressure measurement and radio wave reception is low, and reception may not be performed reliably if radio waves are received during blood pressure measurement. .

  For example, when the measurement / stop switch 22A is operated during execution of the reception operation, the reception control unit 65 cancels the reception under execution, discards the time information obtained at that time, and Cancel the 35 time settings. In this case, the reception control unit 65 may make reception wait until the next predetermined reception scheduled time, or may reset the time when a predetermined time has elapsed after the reception is canceled to the next reception scheduled time. . Further, the reception control unit 65 similarly performs radio wave reception and time setting even when the user operates the user selection switch 22E to refer to the history of measurement values while the radio wave is being received by the antenna 31. You may cancel it.

  Reception control unit 65 also obtains the time information obtained by the previous reception even when measurement / stop switch 22A is operated between the end of reception and the end of time setting of timekeeping unit 35. It may be discarded and the time setting of the timer unit 35 may be canceled. However, if reception of radio waves by the antenna 31 is completed, even if the measurement / stop switch 22A is operated, the time setting of the timer unit 35 is not canceled but the blood pressure is set until the time setting of the timer unit 35 is completed. The start of the measurement may be delayed.

  When the reception scheduled time of the radio wave by the antenna 31 comes while the measurement operation is being performed, the reception control unit 65 stops the execution of the reception operation at the reception scheduled time and continues the blood pressure measurement. Further, even when the reception scheduled time of the radio wave by the antenna 31 comes while the measurement result is displayed by the display unit 21, the reception control unit 65 stops the execution of the reception operation at the reception scheduled time, and displays the measurement result. To continue. Further, even when the scheduled reception time of the radio wave by the antenna 31 comes while the alarm 40 is ringing, the reception control unit 65 suspends the execution of the reception operation at the scheduled reception time, and continues the ringing of the alarm 40. Also in these cases, the reception control unit 65 may make the execution of the reception operation wait until a predetermined next scheduled reception time, or when a predetermined time has elapsed after the cancellation of the reception operation, the reception control unit 65 The scheduled reception time (scheduled time for the next reception operation) may be reset. By performing such processing, it is possible to prevent the electronic blood pressure monitor 10 from operating against the user's intention in order to automatically start radio wave reception. That is, the measurement is not stopped during blood pressure measurement, the display content is switched to one relating to time setting while the measurement result is displayed, and alarm 40 does not stop sounding even at the ringing time.

  Further, when the electronic blood pressure monitor 10 is operating with the battery 29B, the reception control unit 65 restricts the execution of the above-described reception operation according to the remaining capacity of the battery 29B. For example, the reception control unit 65 gradually reduces the number of executions of the reception operation according to the voltage change of the battery 29B. Further, the reception control unit 65 suspends the execution of the reception operation when the voltage of the battery 29B is less than or equal to a predetermined threshold. For example, assuming that the antenna 31 automatically receives a radio wave three times a day, the reception control unit 65 determines that the voltage drop of the battery 29B is notified from the voltage drop detection unit 29C according to the voltage of the battery 29B. The number of times of reception is decreased in order of 2 times, 1 time, reduced to 1 at a stretch, or 0 times (ie, reception is prohibited). Alternatively, although the number of receptions may be reduced according to the voltage of the battery 29B, the reception may be performed once a day. Note that the number of executions of the reception operation counts continuous reception and time setting operations at one scheduled reception time as one even when the antenna 31 repeats reception without successfully receiving a radio wave.

  Further, the reception control unit 65 may also limit the number of times of reception of radio waves in the case of forced reception. For example, the reception control unit 65 sets the upper limit of the number of forced receptions that can be performed on one day by the operation of the user, and the electronic blood pressure monitor 10 enters the forced reception mode only when it is within the range of the upper limit. It may be permitted to shift and forcibly receive a radio wave to set the time of the timekeeping unit 35.

  Alternatively, the reception control unit 65 may shorten the length of the reception period in which reception is repeated when the antenna 31 does not successfully receive the radio wave in accordance with the voltage change of the battery. For example, when the voltage of the battery 29B is sufficient, if reception of radio waves is continued for a maximum of 15 minutes, when the voltage drop detection unit 29C reports a voltage drop of the battery 29B, the reception control unit 65 Accordingly, the reception period may be gradually shortened to 10 minutes, 5 minutes, or 5 minutes at a stretch. Furthermore, the reception control unit 65 may perform both the restriction on the number of executions of the reception operation and the restriction on the reception period.

  For example, assuming that the measurement time is 45 seconds and the display time of the measurement result is 3 minutes, the battery consumption for one blood pressure measurement is about 1.6 mAh. On the other hand, the battery consumption of one radio wave reception is, for example, about 0.8 mAh, assuming that radio waves are not successfully received and reception is repeated for 16 minutes. Thus, although the battery consumption for one radio wave reception is smaller than the battery consumption for one blood pressure measurement, when radio waves are repeatedly received when the battery 29B is exhausted, the original function as a sphygmomanometer Otherwise, the battery 29B is further exhausted by radio wave reception. However, in the electronic sphygmomanometer 10, the reception control unit 65 performs the above-described process, whereby the further consumption of the battery 29B is suppressed.

  FIG. 9 is a flowchart showing an example of reception start determination processing by the electronic blood pressure monitor 10. The flow of FIG. 9 is always performed during the operation of the electronic blood pressure monitor 10.

  During the operation of the electronic blood pressure monitor 10, the reception control unit 65 constantly determines whether or not the automatic reception time has come, that is, whether or not the current time indicated by the timer unit 35 matches the scheduled reception time of the radio wave S51). When the automatic reception time comes, the reception control unit 65 is currently measuring blood pressure (S52), displaying the measurement result (S53), or the alarm 40 is ringing. It is sequentially determined whether or not (S54). If any of these is being executed (Yes in any of S52 to S54), the reception control unit 65 cancels reception at the current reception scheduled time, and waits for the next reception scheduled after a predetermined time. The time is reset (S55). Thereafter, the process returns to S51, and the reception control unit 65 waits until the next scheduled reception time. On the other hand, when neither the blood pressure measurement nor the display of the measurement result nor the alarm ringing is being executed (S52 to S54: No), the reception control unit 65 causes the antenna 31 to start reception of radio waves, and the clock control unit The radio wave reception process shown in FIG. 7 is executed by S. 64 (S56). Above, the reception start determination process by the electronic blood pressure monitor 10 is complete | finished.

  FIG. 10 is a flow chart showing an example of reception restriction processing by the electronic blood pressure monitor 10. The flow in FIG. 10 is not performed during blood pressure measurement or the like, and is performed when the display unit 21 displays only the current time (date and time). In the example of FIG. 10, the radio wave reception is performed every 2 am, 3 am and 4 am every day when the voltage of the battery 29B is 4.5 V or more, and every day when the voltage of the battery 29 B is 4 to 4.5 V It is assumed that the operation is performed twice at 2 am and 4 am and not at all when the voltage of the battery 29B is less than 4V.

  First, the reception control unit 65 determines whether the current time indicated by the timekeeping unit 35 matches any one of 2 am, 3 am, and 4 am (S61), and only when the times coincide. Perform the following processing. If the current time matches one of 2 am, 3 am and 4 am (Yes in S61), reception control unit 65 further determines whether the voltage of battery 29B is 4 V or more. Is determined (S62). If the voltage of the battery 29B is less than 4 V (No in S62), the display control unit 63 causes the display unit 21 to light up and display a mark indicating that the battery voltage has dropped (no battery capacity) (S63) . Thereafter, the process returns to S61, and in this case, since the voltage of the battery 29B is small, radio wave reception is not performed even at the scheduled reception time.

  On the other hand, when the voltage of the battery 29B is 4 V or more (Yes in S62) and less than 4.5 V (No in S64), the display control unit 63 lowers the battery voltage (small battery capacity) Is displayed on the display unit 21 in a blinking manner (S65). At this time, if the current time is 3 am (Yes in S66), radio wave reception is not performed because the voltage of the battery 29B is small, and the process returns to S61.

  On the other hand, if the voltage of battery 29B is 4.5 V or more (Yes in S64) or if the current time is less than 4.5 V at 2 am or 4 am (No in S66), the reception control unit At 65, the antenna 31 receives the standard radio wave (S67). When the radio wave is successfully received (Yes in S68), the clock control unit 64 corrects the date and time of the timer unit 35 based on time information obtained from the radio wave received by the antenna 31 (S70), The electronic sphygmomanometer 10 is turned off (clock display state). If the reception of the radio wave fails (No in S68), while the reception time is less than 15 minutes (No in S69), the process returns to S67, and the clock control unit 64 causes the antenna 31 to receive the standard radio wave again. On the other hand, when the reception time reaches 15 minutes (Yes in S69), the clock control unit 64 turns the electronic blood pressure monitor 10 off (clock display state) without correcting the date and time of the clock unit 35 (S71). Make it Above, the reception restriction process by the electronic blood pressure monitor 10 is completed.

  The radio controlled watch 30 is not limited to the standard radio wave, and other radio waves including time information may be used. For example, instead of the antenna 31 and the receiving circuit 32, an antenna for receiving radio waves from a GPS (Global Positioning System) satellite and a receiving circuit for extracting time information from GPS signals received by the antenna are disclosed. It may be provided, and the time information extracted by this receiving circuit may be used for the time setting of the timer unit 35.

DESCRIPTION OF SYMBOLS 10 Electronic Sphygmomanometer 20 Body case 21 Display part 22 Operation part 23 Pressure pump 25 Pressure sensor 27 Solenoid control valve 29 Power supply part 30 Radio wave clock 31 Antenna 35 Time measurement part 40 Alarm 50 Memory 60 Control part 70 Air tube 80 Cuff

Claims (4)

Battery,
A blood pressure measurement unit that executes a measurement operation of measuring the blood pressure using the power supplied from the battery;
An antenna for receiving radio waves including time information;
Timekeeping unit which measures time,
An output unit that associates and outputs information of a measurement result by the blood pressure measurement unit and information of a measurement time obtained from the timekeeping unit;
A control unit that constitutes a control circuit;
The control unit includes a clock control unit and a reception control unit.
The clock control unit executes a reception operation of setting the time of the time measuring unit based on time information obtained by causing the antenna to receive a radio wave at a scheduled reception time.
The electronic sphygmomanometer according to claim 1, wherein the reception control unit controls the measurement operation and the reception operation not to be performed simultaneously, and restricts the execution of the reception operation according to the remaining capacity of the battery.   The electronic sphygmomanometer according to claim 1, wherein the reception control unit reduces the number of times of execution of the reception operation stepwise in accordance with a voltage change of the battery.   The electronic sphygmomanometer according to claim 1, wherein the reception control unit suspends the execution of the reception operation when the voltage of the battery is equal to or less than a predetermined threshold. When the reception of the radio wave by the antenna is not successful at the scheduled reception time, the clock control unit causes the antenna to repeatedly receive the radio wave for a reception period of a predetermined length,
The electronic blood pressure monitor according to any one of claims 1 to 3, wherein the reception control unit shortens the reception period in accordance with a voltage change of the battery.

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