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WO2015023029A1 - Appareil de mesure d'ondes électromagnétiques pour dispositif électrique et procédé de mesure faisant appel à celui-ci - Google Patents

Appareil de mesure d'ondes électromagnétiques pour dispositif électrique et procédé de mesure faisant appel à celui-ci Download PDF

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WO2015023029A1
WO2015023029A1 PCT/KR2013/011572 KR2013011572W WO2015023029A1 WO 2015023029 A1 WO2015023029 A1 WO 2015023029A1 KR 2013011572 W KR2013011572 W KR 2013011572W WO 2015023029 A1 WO2015023029 A1 WO 2015023029A1
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value
electromagnetic wave
measured
button
electromagnetic
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Korean (ko)
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김혜선
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics

Definitions

  • the present invention relates to an electromagnetic wave measuring device of an electric device, and in particular, by accurately grasp the electric and magnetic fields of electric devices used in daily life to induce the user's prior not to be exposed to the risk of electromagnetic waves, different measurement methods
  • the present invention relates to an electromagnetic wave measuring apparatus of an electrical apparatus and a measuring method using the same, which have a measurement accuracy with respect to the interference of an external element and the change of the measurement condition by using a mixed measurement.
  • electromagnetic waves which are called electromagnetic waves, and are a kind of electromagnetic energy generated from the flow of electricity and magnetism. It is referred to as electromagnetic waves because the electric and magnetic fields repeatedly spread like waves.
  • electromagnetic waves are transverse waves, like waves in the ocean or strings of string instruments. All electromagnetic waves have an amplitude, wavelength, velocity, and frequency, originally called electric magnetic waves, which are called electromagnetic waves. Electromagnetic waves are waves consisting of two components: electric and magnetic fields. , Propagates space at light speed.
  • electromagnetic waves are so close to us that there is no place not only in the electronic products we use, but also throughout the life such as transportation means such as subways and mobile phones, and also occurs in power lines widely distributed in our living environment. Doing. In addition, almost all environments such as homes, schools, and workplaces are exposed to electromagnetic waves.
  • Table 1 One Microwaves Mobile phone, satellite TV and communication, microwave 2 Microwave (UHF) TV Broadcasting, Digital TV Broadcasting 3 Microwave (VH) FM radio broadcast, Radio controlled models 4 Short wave police radio, aircraft radio 5 Medium wave AM radio broadcasting 6 Long wave AM and Radio for Coastal and Marine
  • Such electromagnetic waves may be expressed as electric and magnetic fields, but when expressed as electric fields, V (volts) and magnetic fields are G (gaussian). For example, 3 mV / m (meters) represents 0.003 volts per meter, and 3 mG / m means 0.001 G (gauss) per meter. Normally, all countries in the world test and regulate with electric fields and measure the law to ensure the reproducibility of the measurement.
  • the device for measuring the electromagnetic wave is configured in such a way that one measuring method is used, the reliability of the measured value for the electromagnetic wave measurement is underestimated, and the measuring range according to the limit range of the measuring range which is characteristic for the measuring methods of different measuring methods. At the same time, the measurement was not possible at the same time the measured value is different, there was a problem that the error rate is not generated, the realistic measurement effectiveness.
  • the present invention has been made in view of the problems of the prior art as described above, and measures the average value of the directionality of electromagnetic waves generated in an electric device through a mixed measurement in one or three directions, one direction and three directions.
  • An object of the present invention is to provide an electromagnetic wave measuring apparatus and a measuring method using the same.
  • another object of the present invention is to measure the measured value in accordance with the measurement range and the measurement characteristics by converting the magnetic induction method and the Hall effect method mixed to the average value.
  • another object of the present invention is to display the electric field and magnetic field constituting the electromagnetic wave in a digital value, so that it is easy to check and display a lamp, warning sound, and action tips for the danger of the electromagnetic wave.
  • Another object of the present invention is to be applicable to all the electric devices that operate with electricity to be applicable to the existing electric devices in everyday life or industrial sites to increase the utilization.
  • the present invention provides a device for measuring electromagnetic waves generated by an electric device operating using electricity in home, medical, and industrial fields, the electricity being supplied through a power supply unit for receiving power of the electric device. It consists of a high frequency oscillator which transmits the analog signal to the frequency counter and the first amplifier and oscillates high frequency, receives the signal of the high frequency oscillator, and is installed in the X-axis, Y-axis, and Z-axis directions on the center line of the electric equipment. And a first sensor part comprising first to third electromagnetic induction sensors measuring electromagnetic waves in three directions, and measuring X, Y, and Z axes on the first and third electromagnetic induction sensors of the first sensor part.
  • the measured modulation value changed by the magnetic field modulator and the electric signal amplified by the first amplifier are transferred to the calculator to calculate the electric field (V) value and the magnetic field (G) value.
  • V electric field
  • G magnetic field
  • the present invention has the effect of improving the accuracy of the measured value by measuring the average value for the directionality of the electromagnetic waves generated in the electrical device through the measurement in one or three directions, mixed in one and three directions.
  • the magnetic induction method and the hall effect method are used in combination to improve the reliability of the measured value by converting the measured value according to the measurement range and the measurement characteristic into an average value.
  • FIG. 1 is a configuration diagram of an electromagnetic wave measuring apparatus 100A of an electric apparatus according to the present invention.
  • FIG. 2 is a front view of an electromagnetic wave measuring apparatus 100A of an electric apparatus according to the present invention.
  • FIG. 3 is a configuration diagram of an electromagnetic wave measuring apparatus 100B of an electric apparatus according to the present invention.
  • FIG. 4 is a front view of an electromagnetic wave measuring apparatus 100B of an electric apparatus according to the present invention.
  • FIG. 5 is a configuration diagram of an electromagnetic wave measuring apparatus 100C of an electric apparatus according to the present invention.
  • FIG. 6 is a front view of the electromagnetic wave measuring apparatus 100C of the electric apparatus according to the present invention.
  • FIG. 7 is a configuration diagram of an electromagnetic wave measuring apparatus 100D of an electric apparatus according to the present invention.
  • FIG. 8 is a front view of an electromagnetic wave measuring apparatus 100D of an electric apparatus according to the present invention.
  • FIG. 9 is a schematic configuration diagram of an electromagnetic induction sensor according to the present invention.
  • FIG. 10 is a front view of the measuring apparatus according to the present invention applied to a microwave oven
  • FIG. 11 is a partial perspective view of the measuring apparatus 100A according to the present invention applied to a microwave oven,
  • FIG. 12 is a partial perspective view of the measuring apparatus 100C according to the present invention applied to a microwave oven
  • FIG. 13 is a partial sectional view in which the measuring apparatus 100A according to the present invention is applied to a microwave oven
  • FIG. 14 is a partial cross-sectional view of a measuring apparatus 100C according to the present invention applied to a microwave oven,
  • 16 is a measurement flowchart of the measuring apparatus 100C according to the present invention.
  • first sensor unit 20a high frequency coil
  • first electromagnetic induction sensor 22 second electromagnetic induction sensor
  • microwave oven 201 operation panel
  • the present invention to accurately grasp the electric and magnetic fields of the electric equipment used in everyday life to induce the user's prior knowledge not to be exposed to the risk of electromagnetic waves, and to measure the interference and measurement conditions of external factors by using a mixture of different measurement methods The accuracy of the measurement is to be corrected for the change of.
  • the electromagnetic wave measuring apparatus of the electric device of the present invention as an oscillation signal through the high frequency oscillator 13 applied through the power supply unit 10 of the electric device
  • the first to third electromagnetic induction sensors 21, 22, and 23 using the electromagnetic induction method measure electromagnetic waves in three directions of the electric device, and display values of the electric field V and the magnetic field G on the display window 30.
  • Measuring device 100A A measuring device (100B) for measuring unidirectional electromagnetic waves using only the first electromagnetic induction sensor (21) in the same configuration as the measuring device (100A);
  • the first electromagnetic induction sensor 21 using the electromagnetic induction method as an oscillation signal through the high frequency oscillator 13 supplied with the power of the electrical device through the power supply unit 10 to measure electromagnetic waves in one direction of the electrical device, and the power supply unit 10
  • the first to third Hall effect sensors (51, 52, 53) using the Hall effect method and measuring the electromagnetic waves in three directions of the electrical device to receive the power of the electric power (V) and magnetic field (G)
  • a measuring device 100C displayed on the display window 30; In the same configuration as the measuring apparatus 100C, the measuring apparatus 100D measures the first electromagnetic induction sensor 21 unidirectional electromagnetic waves using only the first hall effect sensor 51.
  • the measuring device 100A transmits an analog signal of electricity supplied through a power supply unit 10 to which electric power is applied, and includes a frequency counter 11 and a first amplifier 12.
  • the high frequency oscillator 13 which transmits and oscillates a high frequency is comprised.
  • the first to third electromagnetic induction sensor 21 receiving the signal of the high-frequency oscillator 13 and installed in the X-axis, Y-axis, Z-axis direction on the center line of the electric equipment, respectively, to measure the electromagnetic wave in three directions by the electromagnetic induction method
  • a first sensor unit 20 consisting of 22) and 23) is constituted.
  • the magnetic field modulator 31 displays the electromagnetic values on the X-axis, Y-axis, and Z-axis lines measured by the first to third electromagnetic induction sensors 21, 22, and 23 of the first sensor unit 20.
  • the changed measurement modulation value and the electric signal amplified by the first amplifier 12 are transferred to the calculator 32 to be converted into an electric field (V) value and a magnetic field (G) value to convert the analog electromagnetic wave value into a digital value in the display window 30. Configure to display.
  • the measuring device (100B) is configured to measure the first sensor unit 20 with one first electromagnetic induction sensor (21), the measuring device (100A) to the number of electromagnetic induction sensors to three It is made up.
  • the measuring device 100A, 100B includes a power supply unit 10, a frequency counter 11, a first amplifier 12, a high frequency oscillator 13, a first sensor unit 20, and a magnetic field modulator 31.
  • the calculator 32 and the display window 30 may all be configured by a circuit connection method on a separate PCB board 60.
  • the power supply unit 10 is a configuration for receiving the power for driving the measuring device (100A) (100B) when the power is applied to the electrical equipment, the frequency counter 11 for determining the frequency of the electrical signal
  • the first amplifier 12 is configured to amplify an electrical signal
  • the high frequency oscillator 13 is configured to oscillate an electrical signal at a high frequency
  • the first sensor unit 20 has three electromagnetic induction sensors, respectively.
  • the magnetic field modulator 31 is a configuration for modulating the electromagnetic wave signal measured by the first sensor unit 20
  • the calculator Reference numeral 32 is a configuration for converting the amplified signal of the first amplifier 12 and the analog signal of the modulated electromagnetic wave value of the magnetic field modulator 31 into a digital signal
  • the display window 30 is a digital signal received from the calculator 32 It is the configuration to display by value.
  • the first electromagnetic induction sensor 21 of the first to third electromagnetic induction sensors 21, 22, 23 constituting the first sensor unit 20 of the measuring device 100A is a PCB substrate 60.
  • the second and third electromagnetic induction sensors 22 and 23 are connected to the power line 61 from the PCB 60 and connected to the Y-axis line in the electronic device. It is configured to be installed in the Z-axis linear direction.
  • the first electromagnetic induction sensor 21 constituting the measuring device (100B) is to measure the electromagnetic wave only in one direction is installed by connecting to the PCB substrate (60) would be desirable.
  • the first sensor unit 20 of the measuring device (100A) is configured to cover a portion and the shielding means 40 to expose the remaining portion.
  • the first to third electromagnetic induction sensors 21, 22 and 23 of the first sensor unit 20 constituting the measuring device 100A may be connected to another electrical device near the electrical device to measure electromagnetic waves.
  • the first to third electromagnetic induction sensors 21, 22, and 23 may be affected by electromagnetic waves generated by other electrical devices, so that the shielding means 40 may be minimized.
  • the first to third electromagnetic induction sensors 21, 22, 23 is configured to shield the surface facing the outside of the electrical device to measure the electromagnetic wave and the surface facing the inside.
  • the shielding means 40 forms a semi-cylindrical shielding film 41 in a form that can cover the first to third electromagnetic induction sensors 21, 22, 23, one side of the shielding film 41 As one or more fixed end 42 to be fixed to the electrical device and the PCB board 60 is made of a non-conductive material such as Teflon.
  • the display window 30 is configured to simultaneously or selectively display the electromagnetic wave value by the electric field (V) value and the magnetic field (G) value measured by the electric device.
  • the display window 30 may be configured to display a warning lamp, a warning sound or a safety distance display when an electromagnetic wave value exceeding a reference value is measured.
  • the display window 30 is configured to be installed on one side of the PCB substrate 60 so as to be exposed to the outside of the electric device, the display window 30 may be configured as an LED panel or an LCD panel.
  • the display window 30 has a power button 30a for controlling the power supply and shut-off of the power supply unit 10, a time button 30b for indicating the time for measuring the current electromagnetic wave, and confirming the current measured electromagnetic wave value.
  • the X value button (X), the Y value button (Y), and the Z value button (Z) for displaying each measured value alone are configured to be functionally connected.
  • the power button 30a, time button 30b, hold button 30c, electric field button 30d, magnetic field button 30e, X value button (X), Y value button (Y), Z value button (Z) is installed at each lower portion of the PCB substrate 60, the display window 30 is installed is configured to transmit a control signal to the display window (30).
  • the display window 30 indicates a power remaining amount zone A indicating a charge amount of the auxiliary power supply 10a that appears when the power button 30a is pressed, continuously displaying the current time, or indicating a time that appears when the time button 30b is pressed.
  • a power remaining amount zone A indicating a charge amount of the auxiliary power supply 10a that appears when the power button 30a is pressed, continuously displaying the current time, or indicating a time that appears when the time button 30b is pressed.
  • an electric field display zone (C) showing a measured electric field value at any time and a magnetic field display zone (D) showing a magnetic field measurement value are respectively formed.
  • the X value button (X), Y value button (Y), and Z value button (Z) are pressed, the respective electromagnetic wave measured values measured by the first to third electromagnetic induction sensors 21 (22) and 23 are applied to the electric field.
  • It is configured to be displayed as a separate measured value display zone (E), which is divided into a magnetic field and a magnetic field, a warning lamp zone (F) for emitting a warning light, and a safety distance display zone (G) for a safe distance, which is a harmless range of electromagnetic waves. do.
  • E measured value display zone
  • F warning lamp zone
  • G safety distance display zone
  • the buzzer 30-1 is configured at one side of the PCB substrate 60 to generate a warning sound.
  • the power supply unit 10 constitutes an auxiliary power supply unit 10a for temporarily storing power, and the auxiliary power supply unit 10a does not operate an electric device but measures an electromagnetic wave while only an electric cord is connected to the power button ( Press 30a) to supply power for measurement by receiving power from the auxiliary power supply 10a.
  • the first to third electromagnetic induction sensors 21 and 22 and 23 are paired on both sides of the high frequency coil 20a receiving the oscillation signal of the high frequency oscillator 13.
  • the magnetic field generated between the magnetometer 20b and the electromagnet 20c is based on Faraday's law of electromagnetic induction. It is configured to connect with the magnetic flux meter 20b to measure and deliver the measured value to the magnetic field modulator 31.
  • the measuring device (100C) is a frequency counter 11 and the first amplifier 12 of the analog signal of electricity supplied through the power supply unit 10 receives the power of the electrical equipment
  • the high frequency oscillator 13 which transmits and oscillates a high frequency is comprised.
  • the first sensor unit 20 is configured to be unidirectionally measured by the first electromagnetic induction sensor 21 which receives the signal of the high frequency oscillator 13 and is installed at one side of the electric device to measure the electromagnetic wave by the electromagnetic induction method.
  • the electric signal is received from the power supply unit 10 and is installed in the X-axis, Y-axis, and Z-axis directions based on the first sensor unit 20, respectively, and measures electromagnetic waves in three directions by a Hall effect method.
  • a second sensor unit 50 composed of the first to third Hall effect sensors 51, 52 and 53 is configured.
  • the display window 30 is configured to display the analog electromagnetic wave value as a digital value.
  • the measuring device 100D is configured such that the second sensor unit 50 includes one first hall effect sensor 51 to measure unidirectionally. Is composed of three Hall effect sensors while the measuring device (100D) is composed of one Hall effect sensor.
  • the measuring devices 100C and 100D include a power supply unit 10, a frequency counter 11, a first amplifier 12, a high frequency oscillator 13, a first sensor unit 20, and a magnetic field modulator 31.
  • the second sensor unit 50, the second amplifier 54, the calculator 32, and the display window 30 may all be configured in a circuit connection method on a separate PCB board 60.
  • the power supply unit 10 is a configuration for receiving the power for driving the measuring device (100A) (100B) when the power is applied to the electrical equipment, the frequency counter 11 for determining the frequency of the electrical signal
  • the first amplifier 12 is configured to amplify an electrical signal
  • the high frequency oscillator 13 is configured to oscillate an electrical signal at a high frequency
  • the first sensor unit 20 uses one electromagnetic induction sensor.
  • the magnetic field modulator 31 is configured to modulate the electromagnetic wave signal measured by the first sensor unit 20, and the second sensor unit 50 uses three Hall effect sensors.
  • the unidirectional electromagnetic wave is measured by using the three-way electromagnetic wave measurement and one Hall effect sensor
  • the second amplifier 54 is configured to amplify the electromagnetic wave signal measured by the second sensor unit 50.
  • the display 30 is configured to display a signal transmitted from the computing unit 32 into a digital value.
  • the first to third Hall effect sensors 51, 52 and 53 constituting the second sensor unit 50 of the measuring device 100C are connected to the power line 61 on the PCB 60. It is configured to be installed in any X-axis, Y-axis, Z-axis direction inside the electronic device.
  • the first electromagnetic induction sensor 21 constituting the measuring device (100D) is to measure the electromagnetic wave only in one direction to be fixed to the PCB substrate 60 or installed at any point of the electrical equipment would be desirable.
  • the first to third Hall effect sensor 51 of the first electromagnetic induction sensor 21 and the second sensor unit 50 of the first sensor unit 20 constituting the measuring device (100C) (100D) ( 52) 53 or the first Hall effect sensor 51 may be affected by electromagnetic waves generated by other electric devices when another electric device is installed near the electric device to measure electromagnetic waves.
  • the first electromagnetic induction sensor 21 and the first and third Hall effect sensors 51, 52, and 53 are shielded by using the shielding means 40 so as to minimize the influence of electromagnetic waves of other electric devices.
  • 1 to 3 Hall effect sensors 51, 52, 53 is configured to shield the surface facing the outside of the electrical equipment to measure the electromagnetic waves and to expose the surface facing toward the inside.
  • the first electromagnetic induction sensor 21 generates a pair of magnetic flux meters 20b and electromagnets 20c positioned between both sides of the high frequency coil 20a receiving the oscillation signal of the high frequency oscillator 13.
  • the magnetic field is measured based on Faraday's law of electromagnetic induction, and the magnetic field is measured using the electromotive force induced in the high frequency coil 20a according to the rate of change of the magnetic flux ⁇ to transfer the measured value to the magnetic field modulator 31. It is connected with the magnetometer 20b.
  • the shielding means 40 forms a semi-cylindrical shielding film 41 in a form that can cover the first electromagnetic induction sensor 21 and the first to third Hall effect sensors 51, 52, 53.
  • one side of the shielding film 41 is one or more fixed end 42 to be fixed to the electrical device and the PCB substrate 60 is made of a non-conductive material such as Teflon.
  • the display window 30 is configured to simultaneously or selectively display the electromagnetic wave value by the electric field (V) value and the magnetic field (G) value measured by the electric device.
  • the display window 30 may be configured to display a warning lamp, a warning sound or a safety distance display when an electromagnetic wave value exceeding a reference value is measured.
  • the display window 30 is configured to be installed on one side of the PCB substrate 60 so as to be exposed to the outside of the electric device, the display window 30 may be configured as an LED panel or an LCD panel.
  • the display window 30 has a power button 30a for controlling the power supply and shut-off of the power supply unit 10, a time button 30b for indicating the time for measuring the current electromagnetic wave, and confirming the current measured electromagnetic wave value.
  • the X value button (X), the Y value button (Y), and the Z value button (Z) for displaying each measured value alone are configured to be functionally connected.
  • the power button 30a, time button 30b, hold button 30c, electric field button 30d, magnetic field button 30e, X value button (X), Y value button (Y), Z value button (Z) is installed at each lower portion of the PCB substrate 60, the display window 30 is installed is configured to transmit a control signal to the display window (30).
  • the display window 30 indicates a power remaining amount zone A indicating a charge amount of the auxiliary power supply 10a that appears when the power button 30a is pressed, continuously displaying the current time, or indicating a time that appears when the time button 30b is pressed.
  • a power remaining amount zone A indicating a charge amount of the auxiliary power supply 10a that appears when the power button 30a is pressed, continuously displaying the current time, or indicating a time that appears when the time button 30b is pressed.
  • an electric field display zone (C) showing a measured electric field value at any time and a magnetic field display zone (D) showing a magnetic field measurement value are respectively formed.
  • the X value button (X), Y value button (Y), and Z value button (Z) are pressed, the respective electromagnetic wave measured values measured by the first to third electromagnetic induction sensors 21 (22) and 23 are applied to the electric field.
  • It is configured to be displayed as a separate measured value display zone (E), which is divided into a magnetic field and a magnetic field, a warning lamp zone (F) for emitting a warning light, and a safety distance display zone (G) for a safe distance, which is a harmless range of electromagnetic waves. do.
  • E measured value display zone
  • F warning lamp zone
  • G safety distance display zone
  • the buzzer 30-1 is configured on one side of the PCB substrate 60.
  • the power supply unit 10 constitutes an auxiliary power supply unit 10a for temporarily storing power, and the auxiliary power supply unit 10a does not operate an electric device but measures an electromagnetic wave while only an electric cord is connected to the power button ( Press 30a) to supply power for measurement by receiving power from the auxiliary power supply 10a.
  • the first to third electromagnetic induction sensors 21 and 22 and 23 are paired on both sides of the high frequency coil 20a receiving the oscillation signal of the high frequency oscillator 13.
  • the magnetic field generated between the magnetometer 20b and the electromagnet 20c is based on Faraday's law of electromagnetic induction. It is configured to connect with the magnetic flux meter 20b to measure and deliver the measured value to the magnetic field modulator 31.
  • the electric device will be described as an example of applying and installing measuring devices 100A, 100B, 100C, and 100D to the microwave oven 200 that is most closely used in daily life among various devices.
  • the measurement apparatuses 100A, 100B, 100C, and 100D may be installed inside the microwave oven 200 to the side where the operation panel 201 of the microwave oven 200 is installed, but the display window 30 and Various buttons are installed to be exposed to the outside.
  • the first electromagnetic induction sensor 21 of the first sensor unit 20 constituting the measuring device 100A is connected to the PCB substrate 60.
  • the microwave oven 200 is installed to be positioned on the X-axis line in the microwave oven 200 in the state, and the second and third electromagnetic induction sensors 22 and 23 are positioned on the Y-axis line and the Z-axis line, respectively.
  • Installed on the inner surface of the outer panel 202 of each of the X-axis, Y-axis, and Z-axis are installed to measure the electromagnetic waves in three directions.
  • the measuring device 100B is installed so that the first electromagnetic induction sensor 21 of the first sensor unit 20 is located on the X-axis line inside the microwave oven 200 while being connected to the PCB substrate 60. To measure electromagnetic waves in one direction.
  • the first to third electromagnetic induction sensors 21, 22, 23 are shielded by using the shielding means 40 so as not to be affected by other electromagnetic waves acting on the outside of the microwave oven 200, and accurate measured values. There is a characteristic to ensure the stability of the calculation and measurement of.
  • the electric power is applied to the microwave oven 200 which is an electric device to measure the electromagnetic wave value.
  • the high frequency oscillator 13 oscillates and at the same time the frequency counter 11 counts the frequency of the electric signal, and in the first amplifier 12, Amplify the frequency of the electrical signal.
  • the signal oscillated by the high frequency oscillator 13 is transmitted to the first to third electromagnetic induction sensors 21, 22 and 23, and the first to third electromagnetic induction sensors 21 to receive the oscillation signal ( 22 and 23 measure the electromagnetic waves generated when the magnetron oscillating the microwave to heat the food when the microwave oven 200 is operated.
  • the measuring principle of the first to third electromagnetic induction sensors 21, 22, 23 is that the oscillation signal of the high frequency oscillator 13 is respectively the first to third electromagnetic induction sensors 21, 22, 23.
  • the magnetic field generated between the pair of magnetic flux meters 20b and the electromagnet 20c positioned at both sides of the high frequency coil 20a is transmitted to the high frequency coil 20a positioned inside the magnetic field, the Faraday electromagnetic induction.
  • the magnetic field is measured using electromotive force induced in the high frequency coil 20a according to the rate of change of the magnetic flux ⁇ .
  • Such a method using the first to third electromagnetic induction sensors 21, 22 and 23 does not require calibration because it uses physical inherent phenomena, and is commonly used as a magnetic field standard in combination with an electromagnet system. It is characterized by 1 ⁇ 10 -2 to 15 T and resolution of about 10 -8 T.
  • the first to third electromagnetic induction sensors measures the electromagnetic wave values on the X-axis, Y-axis, Z-axis line inside the microwave oven 200.
  • the magnetic field modulator 31 connected to the magnetic flux meter 20b is used to transfer the electromagnetic values on the X-axis, Y-axis, and Z-axis lines measured by the first to third electromagnetic induction sensors 21, 22, 23. Transfer the measured modulation value and the electric signal amplified by the first amplifier 12 by changing the electromagnetic wave value of the magnetic field measured from the first to third electromagnetic induction sensors 21, 22, 23 in the magnetic field modulator 31 Transfer to operator 32.
  • the measurement modulated value and the amplified electric signal input to the calculator 32 are calculated as the electric field V value and the magnetic field G value, and the analog electromagnetic wave values are displayed on the display window 30 as digital values.
  • the measuring device 100B uses only the first electromagnetic induction sensor 21, only the electromagnetic wave measurement value for the X axis may be measured and displayed on the display window 30.
  • the first electromagnetic induction sensor 21 of the measuring device 100C is installed on the PCB substrate 60, and the first to third Hall effect sensors 51 of the second sensor unit 50 ( 52 and 53 are respectively disposed on the inner surface of the outer panel 202 of the microwave oven 200 so as to be positioned on the X axis line, the Y axis line, and the Z axis line, respectively, out of the line where the first electromagnetic induction sensor 21 is located. It is installed to measure electromagnetic waves in three directions of X, Y, and Z axes.
  • microwave oven 200 which is an electric device to measure the electromagnetic wave value.
  • the high frequency oscillator 13 oscillates and at the same time the frequency counter 11 counts the frequency of the electric signal, and in the first amplifier 12, Amplify the frequency of the electrical signal.
  • the signal oscillated by the high frequency oscillator 13 is transmitted to the first electromagnetic induction sensor 21, and the first electromagnetic induction sensor 21 receiving the oscillation signal is provided with food during operation of the microwave oven 200.
  • the magnetron which oscillates microwaves to heat it, measures the electromagnetic waves generated.
  • the measuring principle of the first electromagnetic induction sensor 21 is that when the oscillation signal of the high frequency oscillator 13 is transmitted to the high frequency coil 20a located in each of the first electromagnetic induction sensor 21, a high frequency coil ( Based on Faraday's law of electromagnetic induction, a magnetic field generated between a pair of magnetometers 20b and an electromagnet 20c positioned on both sides of 20a) has a high frequency coil ( The magnetic field is measured in one direction using electromotive force induced in 20a).
  • the first to third Hall effect sensors 51 and 52 and 53 of the second sensor unit 50 are supplied with the power of the power supply unit 10 together with the operation of the microwave oven 200.
  • the electromagnetic measuring principle of the first to third Hall effect sensors 51, 52, 53, which are supplied with power is a Hall effect method for measuring the potential difference (Hall voltage) across the conductor.
  • the Hall effect means that current flows through both ends of a metal or a semiconductor and a magnetic field is applied perpendicularly thereto, so that electrons or holes receive Lorentz force, and both ends in a direction perpendicular to the current and the magnetic field are charged. It will take on the inside of the battlefield is formed. When the force received by this electric field and Lorentz force are in equilibrium, the voltage generated at both ends is proportional to the magnetic field.
  • the magnetic field which can be generally measured using the Hall effect, is about 1 ⁇ 10 ⁇ 5 to 30 T and the resolution is about 1 ⁇ 10 ⁇ 7 T.
  • the first to third Hall effect sensors 51 and 52 and 53 are easy to mass-produce, and the size of the Hall probe is small, so that the measurement is advantageous in a narrow place.
  • the electronic device 32 transmits the measured modulation value of the electromagnetic wave value measured by the first electromagnetic induction sensor 21 and the electric signal amplified by the first amplifier 12 to the calculator 32. .
  • the first and third Hall effect sensors 51, 52 and 53 amplify each electromagnetic wave value measured in the X-axis, Y-axis, and Z-axis by the second amplifier 54 to calculate the arithmetic operator 32. To pass.
  • the measured modulation value, the amplified electric signal, and the amplified electromagnetic wave value input to the calculator 32 are calculated as the electric field V value and the magnetic field G value, thereby converting the analog electromagnetic wave value into a digital value in the display window 30. To display.
  • the measuring device 100D maintains a state in which the first electromagnetic induction sensor 21 of the first sensor unit 20 is fixed to the PCB substrate 60 and the first hole of the second sensor unit 50.
  • the effect sensor 51 may be installed at an arbitrary position inside the microwave oven 200 to measure electromagnetic waves in both directions together with the first electromagnetic induction sensor 21.
  • the first electromagnetic induction sensor 21 and the first to third Hall effect sensors 51, 52, 53 are shielded means 40 so as not to be affected by other electromagnetic waves acting from the outside of the microwave oven 200. Shielding using) ensures accurate measurement and the stability of the measurement.
  • the measuring devices 100A, 100B, 100C, and 100D display the measured electromagnetic wave values on the display window 30, and operate the power button 30a to select the start and end of the measurement. There is a feature to choose from.
  • the measuring device (100A) (100B) (100C) (100D) is characterized in that the measured electromagnetic wave is divided into an electric field or a magnetic field in the display window 30 can be easily identified by non-professional, if necessary However, only the magnetic field value can be selectively displayed, which increases the convenience of use.
  • the measurement device 100A, 100B, 100C, 100D is a hold button 30c when the measured value is minutely changed according to the amount of current movement when the measured electromagnetic wave value is displayed on the display window 30. You can check the current displayed value by operating.
  • the measuring device (100A) (100B) (100C) (100D) is a display window by the operation of the program in advance if the measured electromagnetic wave value is out of the harmless range to the human body when the measured electromagnetic wave value is displayed on the display window (30) It also has a safety function that acts as a route lamp or generates a warning sound and displays a safety distance to alert the user or prevent exposure to electromagnetic waves.
  • the measurement device (100A) (100B) 100C (100D) is installed on the electric device is additionally attached to the detection sensor for detecting the human operation by the display window (if electromagnetic waves in the dangerous range occurs during operation of the electric device) 30) will be configured to activate the route lamp or generate a warning sound to indicate the safety distance.
  • the measuring apparatus (100A) (100C) is the electromagnetic wave by using the first to third electromagnetic induction sensor (21) (22) (23) and the first to third Hall effect sensor (51) (52) (53), respectively.
  • Is measured in the X, Y, and Z directions, respectively, and the electric and magnetic fields that form electromagnetic waves are vectors having magnitude and direction as a kind of force formed in the air by electric charge and current, respectively.
  • measuring the intensity of the magnetic field is to calculate the vector sum by measuring the respective intensities in the X-axis, Y-axis, Z-axis direction.
  • Fx, Fy, and Fz representing the sum of electromagnetic wave vectors measured by the first to third electromagnetic induction sensors 21, 22 and 23 and the first to third Hall effect sensors 51, 52 and 53, respectively.
  • the vector sum F can be expressed as shown on the graph, and the vector sum is calculated by the operator 32 and displayed on the display window 30. The preciseness and precision of the measurement can be improved by calculating accurate correction values by measuring different electromagnetic wave measurement values inside the target electronic device.
  • the first to third electromagnetic induction sensors 21, 22, 23 and the first to third Hall effect sensors 51, 52, 53 Since it calculates and displays the sum of electromagnetic waves within itself, it is convenient to measure only once at any point, and it is possible to know in which direction a lot of electromagnetic fields are generated depending on the magnitude of the sensor's measured values on the X, Y, and Z axes. There is a characteristic.
  • the magnetic field range of the electromagnetic wave that can be measured using the electromagnetic induction method of the electromagnetic induction method applied to the first to third electromagnetic induction sensors 21, 22, 23 is 10 -10 T or more
  • the magnetic field range of the electromagnetic wave that can be measured using the Hall effect measuring method applied to the 1 to 3 Hall effect sensors 51, 52 and 53 is about 1 x 10 -5 to 30 T, and the resolution is 1 x 10.
  • By about -7 T it is possible to measure the electromagnetic waves generated by the electrical equipment to be measured at the same time using the different measurement ranges, it is characterized by the accurate measurement and the calculation of accurate measurement value and the measurement reliability is improved.
  • the measuring device (100A) (100B) is the first electromagnetic induction sensor (21) or the X value button (X), Y value button (Y), Z value button (Z) is pressed when pressing
  • the measured electromagnetic wave value in the X-axis direction is displayed on the display window 30 by the first hall effect sensor 51, and when the Y value button Y is pressed, the second electromagnetic induction sensor 22 or the second hall effect sensor ( 52), the measured electromagnetic wave value in the Y-axis direction is displayed on the display window 30.
  • the Z value button Z is pressed, the Z-axis is driven by the third electromagnetic induction sensor 31 or the third hall effect sensor 53.
  • the measured electromagnetic wave value for the direction is displayed on the display window 30 so that it is easy to check in which direction the electromagnetic wave is generated even in the measuring electronic device. There are features that can be.
  • the measuring device (100A) (100B) (100C) (100D) is used by changing the size and structure to all electrical devices that operate using electricity in home appliances, medical devices or industrial sites used in general households It can be.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

La présente invention concerne un appareil de mesure d'ondes électromagnétiques pour un dispositif électrique et un procédé de mesure faisant appel à celui-ci, qui détectent avec précision des valeurs numériques du champ électrique et du champ magnétique d'un dispositif électrique utilisé quotidiennement et induisent ainsi une perception préliminaire d'un utilisateur pour empêcher que l'utilisateur ne soit exposé au danger des ondes électromagnétiques, puis utilisent ensemble différents procédés pour la mesure, ce qui permet d'avoir une mesure précise en dépit de l'interférence d'éléments externes et d'une variation des conditions de mesure. La présente invention comprend : un oscillateur haute fréquence permettant de transférer, vers un compteur de fréquence et vers un premier amplificateur, un signal analogique de l'électricité fournie par une unité d'alimentation électrique à laquelle est appliquée l'électricité du dispositif électrique et d'osciller à haute fréquence ; et une première unité de détection qui reçoit un signal provenant de l'oscillateur haute fréquence et qui comprend de un à trois capteurs à induction électromagnétique, qui sont installés dans les directions de l'axe des X, de l'axe des Y et de l'axe des Z depuis une ligne centrale du dispositif électrique, pour mesurer des ondes électromagnétiques dans les trois directions à l'aide d'un procédé d'induction électromagnétique, respectivement, une valeur de modulation mesurée et un signal électrique amplifié dans le premier amplificateur étant transférés vers une unité de calcul, la valeur de modulation mesurée étant obtenue par un modulateur de champ magnétique en changeant les valeurs d'ondes électromagnétiques sur l'axe des X, l'axe des Y et l'axe des Z mesurées par lesdits capteurs à induction électromagnétique de la première unité de détection, et puis calculés en tant que valeur (V) de champ électrique et valeur (G) de champ magnétique, ce qui permet d'afficher une valeur numérique, qui a été convertie à partir d'une valeur électromagnétique analogique, dans une fenêtre d'affichage. Ainsi, la présente invention permet à l'utilisateur de confirmer les ondes électromagnétiques et garantit la sécurité de l'utilisateur.
PCT/KR2013/011572 2013-08-12 2013-12-13 Appareil de mesure d'ondes électromagnétiques pour dispositif électrique et procédé de mesure faisant appel à celui-ci Ceased WO2015023029A1 (fr)

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KR1020130095180A KR101334722B1 (ko) 2013-08-12 2013-08-12 전기기기의 전자파 측정장치 및 이를 이용한 측정방법

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CN115061072A (zh) * 2022-07-13 2022-09-16 罗斌斌 一种能显示磁力线方向标识的高斯计
CN117406159A (zh) * 2023-12-15 2024-01-16 宁波赛宝信息产业技术研究院有限公司 一种用于电波暗室的霍尔传感器检测系统

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CN107831456B (zh) * 2017-11-29 2024-05-03 武汉智能装备工业技术研究院有限公司 一种基于霍尔传感器的无线三轴磁场测量仪

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CN115061072A (zh) * 2022-07-13 2022-09-16 罗斌斌 一种能显示磁力线方向标识的高斯计
CN117406159A (zh) * 2023-12-15 2024-01-16 宁波赛宝信息产业技术研究院有限公司 一种用于电波暗室的霍尔传感器检测系统
CN117406159B (zh) * 2023-12-15 2024-02-20 宁波赛宝信息产业技术研究院有限公司 一种用于电波暗室的霍尔传感器检测系统

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