UA111364U - MOBILE MULTIFUNCTIONAL DIAGNOSTIC DEVICE - Google Patents

Abstract

The Mobile Multifunction Diagnostic Device contains a set of standard ECG electrodes, an ECG cable, an electronic recording and signal processing unit. The electronic unit contains a microcontroller with a built-in microprocessor control system and interface, galvanic isolation, power supply, USB cable, laptop computer and computer programs. ECG signals are transmitted via a USB cable from the output of the electronic recording and processing unit to the computer. The computer program is designed to implement algorithms for medical analysis and interpretation of the 4th generation ECG. Computer memory and ECG signal processing are performed in digital format SCP-ECG. The device additionally has modules for recording the pulse, temperature and concentration of blood sugar, the power supply unit consists of two batteries in parallel, the recorder records the values of the received signals in the memory card. The memory card reads information from the special software connected to the display unit. The microcontroller is connected to a personal computer.

Description

which is used to receive and save them to a memory card, followed by data processing using the program.

The following elements are placed on the printed circuit board of the MMDP (Fig. 3): power supply unit 1, which is two parallel connected rechargeable batteries 28 with a capacity of 2500 mAh and a voltage of 3.7 V; battery discharge control unit 3, which, with the help of a prp-type transistor, prevents the batteries from being completely discharged, and stops the supply of voltage to the circuit when the voltage on the batteries drops to the level of ZV; charger 4 for charging batteries when they are discharged; two power supply modules 5 and 6, for obtaining voltages of 5V and 9V necessary for the operation of the schemes for removing and processing the received data; microcontroller type 8 of the Aitee!yi family, which processes the captured parameters and saves them to a memory card; a module for recording data on a memory card 7; heart rate monitor block 11, the basis of which is a microcircuit, which is made in the form of two operational amplifiers, and the heart rate reading is performed by a system made of an infrared LED and a photodiode; thermometric unit 12 works on a temperature sensor with an accuracy of 0.1 "С; glucometer unit 13, takes readings of the presence of sugar in the blood using a system of an infrared LED and a photodiode; a bipolar power supply circuit for the operation of an electrocardiograph circuit; an electrocardiograph unit made on the basis of three operational amplifiers and a bipolar power supply circuit; clock button 10, for starting measurements; BOB LED 9, which is used as an indicator of the performance of measurements, battery discharge, data recording on a memory card; button 2, which is used to turn on the device; galvanic isolation 18, which prevents the patient from being electrocuted during the procedure of taking an electrocardiogram; recorder 14, which is used to process the received data and subsequently record them on the memory card 7, and is presented in the form of a microcircuit register; display unit 21, which is presented in in the form of a four-segment indicator and is used for visual p observing which registration module is selected with the tact button 10.

The scheme works as follows: when button 2 is pressed, power supply unit 1 is turned on, which is made in the form of two batteries 28 connected in parallel, from which voltage is supplied to power supply modules 5 and 6 through the control of discharge Z, from which 5V power supply goes to microcontroller 8, the heart rate monitor unit 11, the thermometer unit 12, and the 9V voltage goes to the electrocardiograph unit 15.

The voltage value from the 3.7 V batteries goes to the work of the glucometer unit 13. After connecting the sensor to the necessary module, the microcontroller receives a command and after pressing the clock button 10, whether readings are taken in automatic mode. After the completion of taking readings, the NEW LED 9 signals the completion of data acquisition and the data is transferred to the recorder 14 and the data is recorded on the memory card 7 with further processing of the results using special software. When power supply 1 falls below ZV, the control module of class C supplies power to the WIPO LED 9. To select the required registration module, the tact button 10 is used, and the selected module is displayed on the display unit 21.

The microcontroller 8 is directly connected to the personal computer 20 using the 5RI interface. To charge the power supply unit 1, it is necessary to connect the charging device 4 to the computer 20 with the help of the micro OV cable, with the help of the BV cable 19.

A galvanic isolation 18 serves to protect the patient, which prevents current from flowing to the patient's body in the event of a short circuit.

An electronic data registration and processing unit 29 is used to process the received data. Viewing of the recorded parameters is performed using a personal computer 20, on which the software 27 is installed.

To determine the pulse, it is necessary to place the index finger in the body of the pulse sensor 30, which contains an infrared light diode and a photodiode. Measurements are carried out on the principle of reception of the reflected signal, which comes from the LED and is received by the photodiode. For this pulse sensor 30, a light diode is used, which emits waves with a length of 940 nm. To view the result, it is decoded by the microcontroller and displayed in the appropriate field using the program.

The measurement is carried out for 10 seconds, and then the received value is converted into the number of beats per minute in the firmware of the microcontroller.

To determine the blood sugar concentration, it is necessary to place the index finger in the body of the blood sugar concentration sensor 32, which contains an infrared LED and a photodiode.

Measurements are made on the principle of receiving a signal that has passed through the object and is received by a photodiode. The LED used emits light with a wavelength of 940 nm.

To view the result, it is decoded by the microcontroller and displayed in the appropriate field using the program. The measurement is carried out for 5 seconds, and the obtained value of the voltage received by the photodiode is transmitted to the microcontroller, where the obtained value of the voltage is compared with the concentration of sugar in the blood, and the result is displayed in mmol/l.

To determine the temperature of the body surface, it is necessary to place the temperature sensor 31 on the appropriate part of the body and fix it with an adhesive tape. The measurement is carried out for 15 seconds, after which the received value is entered into the microcontroller, which processes and converts the received value of the electrical signal into degrees "C. The temperature value is displayed in the corresponding program files. The temperature value is displayed in units: "Si KE.

To record a cardiogram, it is necessary to connect the sensor to the appropriate connector on the body of the device.

The sensor is a system of ECG electrodes 16, which are connected to the connector with the help of the ECG cable 17, which are attached to the body. Measurements are carried out in a standing, sitting or lying position and in a state of rest. The measurement time is 1 minute. After the measurement is completed, the received data is entered into the microcontroller, which in turn processes them and writes them to the corresponding file on the memory card. To view the result, an infographic of the cardiogram will appear in the program, which will be built according to the time spent on taking readings.

The design of the device is shown in fig. 4. It consists of a housing base 33, which has a heart rate monitor unit connector 34, a thermometer unit connector 35, a glucometer unit connector 36, an electrocardiograph unit connector 37, a memory card connector 38, a a container for a charger 39, as well as connectors for a tact button 40 and a button for turning on the device 41. A cover 42 is installed on the base of the case, which is fastened with six screws 43, and in which there is a hole 44 for the LED indicator light 9.

Thus, a useful model makes it possible to make the device more portable, lighter, easier to perform, to place all control circuits on one printed circuit board, and also to expand the functionality of a comprehensive examination of the patient to determine the concentration of sugar in the blood, the value of pulse parameters, as well as body temperature. with the help of additional synchronous modules.

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