CN201701577U - Intelligent transfusion alarming system - Google Patents

Abstract

The utility model discloses an intelligent infusion alarm system, which comprises the following modules: a signal detection module, a signal processing module, a main control processing module, a system power supply module and a computer real-time monitoring module. In the utility model, the photoelectric sensor at the dripping pot is used to detect the dripping speed of the liquid drop and the remaining amount of the liquid through the spring part in real time. It is displayed through a display device, and communicates with a computer through a serial port to achieve human-computer interaction. In the transfusion alarm system of the utility model, the signal after processing is obvious, and the observation is obvious, and there is no pollution to the medicinal liquid in the device, which is really convenient and quick.

Description

An Intelligent Infusion Alarm System

technical field

The utility model relates to the field of drip speed detection in small and medium-sized hospitals, especially an intelligent infusion alarm system capable of real-time alarm and remote computer detection.

Background technique

With the improvement of the current medical level, the development of medical devices is also very rapid, but there are still some basic medical devices that have not been fully developed. In the medical field involved in this invention, patients often have some inconvenience when infusion , For example, the infusion is suddenly forced to stop, and the situation often occurs if the droplet is not detected in time, and the doctor may not observe the infusion situation of the patients in time because of taking care of multiple patients, which brings a lot of troubles to the patient's infusion. A lot of inconvenience and trouble. adversely affect the patient's condition.

In response to this problem, various departments of each hospital have also carried out systematic adjustments. At present, the infusion alarm system is also used in various large, medium and small hospitals. At present, the known infusion alarm system detects the number of droplets by changing the gravity of the infusion bottle. The gravity of the liquid bottle changes through the dripping of the droplets, so that the number of droplets can be detected through a small gravity difference, and the number of droplets falling within one minute can be measured, but the stability is not enough and the error is too large. At present, there are also some inventions that can accurately detect the droplet speed of the infusion, and do not take out the needle or change the dressing until the drop stops. This cannot be achieved by notifying the nurse in advance to prepare for the needle removal or changing the dressing. There are many wards and leave it to the nurse. It takes less time to pull out needles or change dressings, which increases the difficulty for nurses to handle needle removal or dressing changes, and it is even more impossible for a nurse to take care of multiple wards.

With the continuous improvement of the medical level, there is an urgent need for infusion devices with sensitive detection technology and early reporting of infusion conditions to be used in major hospitals. Accurate condition analysis of patients can improve the work efficiency of doctors and provide better services for patients.

Contents of the invention

In order to overcome the shortcomings of existing infusion alarms that are not sensitive and cannot report the remaining amount of liquid in advance, and in order to be able to observe the microcomputer system, the utility model uses this infusion alarm system to detect the liquid dripping speed by a photoelectric sensor and measure it by a standard spring device. The weight of the bottle, and the real-time detection of the dropping speed and the amount of liquid left in the infusion bottle by the single-chip computer, and real-time transmission of the dropping speed and the amount of liquid left in the infusion bottle to the computer, which can accurately and quickly detect the drop speed and the amount of liquid in the infusion bottle How much liquid is left in the infusion bottle, and communicate with the computer in real time. If there is too little liquid in the infusion bottle or the liquid in the dripping pot suddenly stops dripping, notify the nurse in time to deal with it, saving the trouble of escorting and greatly saving Hospital manpower.

The technical solution adopted in the utility model is: an intelligent transfusion alarm system, comprising the following modules:

(1) Signal detection module: collect the dripping speed signal through the photoelectric sensor arranged on the drip pot, collect the residual liquid signal of the infusion bottle through the standard dynamometer spring and the photoelectric sensor attached to the standard dynamometer spring;

(2) Signal processing module: the collected signal is processed by signal filtering, amplified by the op amp chip and signal limiting processing, and finally the required signal is output and sent to the single chip microcomputer for identification processing;

(3) Main control processing module: mainly analyze the signal processed by the signal processing module through the single-chip microcomputer, use the buzzer to monitor and alarm in real time, use the display device to display the droplet speed in real time, and use the heating device to heat the dripping liquid that needs to be heated. Carry out heating control, use priority interrupt to monitor in real time whether there is an emergency call request in each ward and give instructions in time through the computer terminal;

(4) System power supply module: It adopts low power supply mode, takes power from the mains, and then steps down the voltage to obtain the required power supply through the voltage regulator chip to supply power for the entire system;

(5) Computer real-time monitoring module: each ward is a slave machine, which uses RS485 communication protocol to transmit data to the host computer in real time. During computer detection, the infusion situation of each ward can be monitored through the upper computer software on the computer side.

The preferred solution of the aforementioned intelligent infusion alarm system is that the signal detection module also monitors the temperature of the dripping liquid in real time through the temperature detection unit fixed at the dripping pot.

In the aforementioned intelligent transfusion alarm system, a preferred solution is that the signal detection module is also provided with a patient emergency call button.

For the aforementioned intelligent infusion alarm system, a preferred solution is that, in the signal detection module, there are 3-5 emitting units of photoelectric sensors fixed on the springs of the standard dynamometer.

The aforementioned intelligent infusion alarm system, the preferred solution is that the emitting unit and receiving unit of the photoelectric sensor arranged on the dripping pot in the signal detection module are symmetrically distributed on both sides of the dripping pot, and are placed on 1/2 of the upper end of the dripping pot. 3 places.

The preferred solution of the aforementioned intelligent infusion alarm system is that the dripping pot in the signal detection module is open on one side.

In the utility model, the photoelectric sensor at the dripping pot is used to detect the dripping speed of the liquid drop and the remaining amount of the liquid through the spring part in real time. When the droplet is falling, the small voltage difference is used to judge the droplet situation, and by properly processing the interference signal, the change of the droplet can be accurately recorded, and the electrical signal generated by the change of the droplet can be accurately recorded. get fast processing. Finally, it is displayed through a display device, and communicates with a computer through a serial port to achieve human-computer interaction. In addition, the utility model also heats the unit at the drip pot to reduce the discomfort caused by the cold weather to the infusion patients. It can quickly and accurately detect the droplet speed and the remaining liquid in the infusion bottle, and can clearly display the droplet speed, and increases the human-computer interaction function. In the transfusion alarm system of the present invention, the signal after processing is obvious, and the observation is obvious. In addition, the device has no pollution to the medicinal liquid, and it is really convenient and quick.

Description of drawings

Fig. 1 is a schematic block diagram of the connection of each module of the infusion alarm system of the present invention.

Fig. 2 is a circuit diagram of the signal detection module of the infusion alarm system of the present invention.

Fig. 3 is a circuit diagram of the signal processing module of the infusion alarm system of the present invention.

Fig. 4 is a circuit diagram of the system power supply module of the infusion alarm system of the present invention.

Fig. 5 is a circuit diagram of the main control processing module of the infusion alarm of the present invention.

Fig. 6 is a schematic diagram of the signal detection module of the infusion alarm system of the present invention.

Fig. 7 is a schematic diagram of the internal structure of Fig. 6A.

FIG. 8 is an enlarged view of FIG. 6B.

Among them, 1. button; 2. standard dynamometer spring; 3. infusion bottle; 4. drip pot; 5. infusion stand; The receiving unit of; 9,10 device wall; C, is the junction of spring and device wall (here is fixed point).

Detailed ways

The structure of the present utility model is described in detail below in conjunction with the embodiments, but the scope of protection is not limited thereto.

Embodiment The intelligent transfusion alarm system consists of the following modules:

(1) Signal detection module: collect the dripping speed signal through the photoelectric sensor arranged on the drip pot, collect the residual liquid signal of the infusion bottle through the standard dynamometer spring and the photoelectric sensor attached to the standard dynamometer spring;

(2) Signal processing module: the collected signal is processed by signal filtering, amplified by the op amp chip and signal limiting processing, and finally the required signal is output and sent to the single chip microcomputer for identification processing;

(3) Main control processing module: mainly analyze the signal processed by the signal processing module through the single-chip microcomputer, use the buzzer to monitor and alarm in real time, use the display device to display the droplet speed in real time, and use the heating device to heat the dripping liquid that needs to be heated. Carry out heating control, use priority interrupt to monitor in real time whether there is an emergency call request in each ward and give instructions in time through the computer terminal;

(4) System power supply module: It adopts low power supply mode, takes power from the mains, and then steps down the voltage to obtain the required power supply through the voltage regulator chip to supply power for the entire system;

(5) Computer real-time monitoring module: each ward is a slave machine, which uses RS485 communication protocol to transmit data to the host computer in real time. During computer detection, the infusion situation of each ward can be monitored through the upper computer software on the computer side.

The signal detection module also monitors the drip temperature in real time through the temperature detection unit fixed at the drip pot. The signal detection module is also provided with a patient emergency call button. In the signal detection module, there are 3-5 emitting units of the photoelectric sensor fixed on the spring of the standard force gauge. The transmitting unit and receiving unit of the photoelectric sensor arranged on the dripping pot in the signal detection module are symmetrically distributed on both sides of the dripping pot, and placed at 1/3 of the upper end of the dripping pot. One side of the drip pot in the signal detection module is open.

Fig. 1 is a schematic block diagram of the connection of each module of the infusion alarm system of the present invention. Wherein, the signal detection module detects the droplet speed signal, the liquid remaining amount detection in the infusion bottle, and the infusion temperature detection. Wherein, the signal processing module processes the signal detected by the signal detection module to obtain a digital signal that is easily recognized by the single chip microcomputer. Among them, the main control processing module calculates the dripping speed by the single-chip computer, circularly detects the remaining amount of liquid and the temperature of the infusion, and displays it in real time. If the drop in the dripping pot suddenly stops or the remaining amount of liquid in the infusion bottle is too low, immediately send a distress signal to the nurse's room , at the same time, an alarm will be issued in the infusion room to remind the patient that the infusion is almost finished or no more. If the doctor does not come to deal with it for a long time, immediately press the emergency button. In addition, this module will also send out a temperature processing signal, which can Fully automatic processing of the temperature of the infusion liquid. The system power supply module can provide the required power for each device. Computer real-time monitoring module, this module is made of VB interface, the doctor can observe the specific infusion drop rate, whether the liquid in the infusion bottle is almost finished, and the temperature of the infusion liquid from the VB interface. In addition, the VB interface in the computer will give a real-time alarm when the droplet stops suddenly, the remaining liquid in the infusion bottle is small, and the patient calls for help. The alarm includes color flashing and sound alarm.

Fig. 2 is a circuit diagram of the signal detection module of the infusion alarm system of the present invention. The fixed position of the photoelectric sensor is shown in Figure 6, Figure 7, and Figure 8, and it is powered by a 5v DC power supply in Figure 4, where the light-emitting diode and phototransistor are signal detection sensors. When the transmitting tube sends out a light signal, the corresponding phototransistor will receive it in real time. If there is an obstacle in the middle, the light signal received by the receiving light is very weak. At this time, the corresponding end of the receiving tube will output a high level. If there is no obstacle in the middle , the level signal is the opposite. In the alternating transformation of the level signal, it is a signal composed of an AC signal and a DC signal. It needs to be processed by DC filtering, and then processed by the signal in Figure 3.

Fig. 3 is a circuit diagram of the signal processing module of the infusion alarm system of the present invention. The three chips are all OP07. The weak signal obtained in Figure 2 is not enough to drive the acquisition unit of the main control module, so this module has processed the signal again. When the signal passes through the first integrated operational amplifier OP07, the signal is Amplify to get a stronger high-low change signal. When the second integrated op amp is working, a narrow pulse signal of 0-5V in a certain range is obtained by comparing the signal. The next step is to perform signal shaping processing. After the third level of signal processing, the PWM wave that is easy to be recognized by the single-chip microcomputer is obtained.

Fig. 4 is a circuit diagram of the system power supply module of the infusion alarm system of the present invention. Among them, D1 and D2 are silicon bridges, which convert the AC signal into a DC signal, and the purpose of the capacitor is to filter or cooperate with the voltage regulator chip to make the voltage regulator chip work better. Among them, LM7805, lm7809, lm7915, and lm7905 are three-terminal regulator chips. Because the signal processing requires high precision, the system power supply requires precision. In order to improve system security, low-power operation mode is adopted, so the signal is step-down and rectified to obtain a DC signal, and then through the voltage regulator chip LM7805, lm7809 , lm7915, lm7905 get +15v, -15v, +5v, -5v power supply for the whole system.

Fig. 5 is a circuit diagram of the main control processing module of the infusion alarm of the present invention. Among them, the main control chip is stc89c52. It can be seen from the figure that the main control chip stc89c52 controls and alarms the whole system. Through the internal processing of the signal to the computer and the display signal, the precise display of the droplet speed is achieved, and through The buzzer circuit in the figure gives an alarm. When the patient is infused with fluid, if the number of drops is too fast or too slow, especially if it stops suddenly, the doctor can observe through the main control computer or alarm through the buzzer, and make an effective response as soon as possible. Condition treatment. There is also a patient emergency SOS button in case the patient has an emergency request. A coding switch is also connected to the pin of the p1 port of the single-chip microcomputer to distinguish each infusion chamber. Among them, the light is a liquid drop indicator light, and when the liquid drop drops every drop, the light will flash once. In addition, use rs485 to communicate with the computer.

Fig. 6 is a schematic diagram of the signal detection module of the infusion alarm system of the present invention. Infusion bottles for medical use are generally divided into three types: 100ml, 250ml, and 500ml. Wherein the button is directly fixed on the device wall of the fixed spring as shown in the figure, and device A is directly fixed on the top of the infusion stand or on the bedside of the ward. The button in the picture is hung up by the doctor after the infusion bottle is pressed and the corresponding button is pressed. The main control part will judge the amount of remaining liquid in the infusion bottle according to the pressed button and the detection result of the spring part.

Fig. 7 is a schematic diagram of the internal structure of Fig. 6A. Among them, the standard dynamometer spring can withstand multiple expansion and contraction without changing the stiffness coefficient. The receiving unit of the photoelectric sensor is fixed in the device wall, and the specific position is adjusted during specific implementation. The photoelectric sensor emitting unit is fixed on the standard dynamometer spring, at least 3-5, so that when the liquid in the infusion bottle decreases, the amount of remaining liquid can be accurately measured, and the specific position of the photoelectric sensor emitting unit is adjusted during specific implementation. Example of specific realization function: when the first button is pressed, it means that the 500ml infusion bottle is suspended. When the liquid is continuously decreasing, when the first photoelectric sensor emitting unit on the top just shines on the photoelectric receiving unit, it means that 1/5 of the liquid in the name is used up. , the remaining 4/5. At this time, the main control processing module will memorize the amount of remaining liquid in the infusion bottle and transmit this information to the computer in real time. When the remaining liquid is not much, it will remind the doctor in advance to change the liquid or pull out the needle, and leave it for the doctor. fluid or needle removal time. The detection method is simple and easy, and saves the troublesome and difficult detection of the weight of the infusion bottle.

FIG. 8 is an enlarged view of FIG. 6B. Among them, the device wall is fixed on the infusion stand, and there are temperature detection unit and heating unit inside. The temperature detection unit and heating unit are controlled by the main control processing module to realize the full self-regulation of temperature. In order to prevent the limited use of electromagnetic heating in the hospital, and light heating will cause adverse reactions to the liquid, the heating unit here uses resistance heating to prevent the infusion from being too cold in winter. Among them, the transmitting unit and receiving unit of the photoelectric sensor must be symmetrically distributed on both sides of the dripping pot, and placed about 2/3 of the dripping pot. When the droplet drops, because the droplet blocks the light emitted by the transmitting tube, the receiving tube cannot receive the optical signal at this time, and generates an electrical signal, which is processed by the signal processing module into a digital signal for the main control processing module to process, calculate and communicate with the computer communication. In addition, one side of the device is open, which is convenient for patients to observe by themselves.

Claims (6)

1. An intelligent infusion alarm system, characterized in that, comprises the following modules: (1) Signal detection module: collect the dripping speed signal through the photoelectric sensor arranged on the drip pot, collect the residual liquid signal of the infusion bottle through the standard dynamometer spring and the photoelectric sensor attached to the standard dynamometer spring; (2) Signal processing module: the collected signal is processed by signal filtering, amplified by the op amp chip and signal limiting processing, and finally the required signal is output and sent to the single chip microcomputer for identification processing; (3) Main control processing module: mainly analyze the signal processed by the signal processing module through the single-chip microcomputer, use the buzzer to monitor and alarm in real time, use the display device to display the droplet speed in real time, and use the heating device to heat the dripping liquid that needs to be heated. Carry out heating control, use priority interrupt to monitor in real time whether there is an emergency call request in each ward and give instructions in time through the computer terminal; (4) System power supply module: It adopts low power supply mode, takes power from the mains, and then steps down the voltage to obtain the required power supply through the voltage regulator chip to supply power for the entire system; (5) Computer real-time monitoring module: each ward is a slave machine, which uses RS485 communication protocol to transmit data to the host computer in real time. During computer detection, the infusion situation of each ward can be monitored through the upper computer software on the computer side. 2. The intelligent transfusion alarm system according to claim 1, characterized in that, the signal detection module also monitors the drip temperature in real time through a temperature detection unit fixed at the drip pot. 3. The intelligent transfusion alarm system according to claim 1, characterized in that the signal detection module is also provided with a patient emergency call button. 4. The intelligent transfusion alarm system according to claim 1, characterized in that 3-5 emitting units of the photoelectric sensors fixed on the standard dynamometer springs are set in the signal detection module. 5. The intelligent transfusion alarm system according to claim 1, characterized in that, the transmitting unit and receiving unit of the photoelectric sensor arranged on the dripping pot in the signal detection module are symmetrically distributed on both sides of the dripping pot, placed in the dripping pot According to the upper 1/3. 6. The intelligent transfusion alarm system according to claim 1, characterized in that one side of the drip pot in the signal detection module is open.

Images