CN102008295A - Finger-clamping pulse oximeter with traditional Chinese medical science pulse feeling function - Google Patents

Abstract

The invention discloses a finger clip type pulse oximeter with the function of pulse diagnosis in traditional Chinese medicine. It uses a single-chip microcomputer system as the lower computer and a PC as the upper computer, and converts the detected human pulse signal into an electrical signal through an optical sensor. After boosting and amplifying circuit, the signal is amplified, the signal is purified through the filter circuit, and the analog signal is converted to digital signal through the A/D conversion circuit and transmitted to the single-chip microcomputer. After the single-chip microcomputer performs signal processing and analysis, it can be transmitted to the PC through USB. , observe the pulse shape, pulse frequency, rhythm, depth and other changes through the special host computer software, analyze it in combination with the theory of pulse diagnosis in traditional Chinese medicine, and display the analysis results on the PC; you can also connect the small display screen to the single-chip microcomputer, by embedding in the single-chip microcomputer The relevant TCM pulse diagnosis software in the system analyzes changes in pulse shape, pulse frequency, rhythm, depth, etc., and directly displays the analysis results on a small display screen.

Description

Finger clip-type pulse oximeter with pulse diagnosis function of traditional Chinese medicine

technical field

The invention relates to a finger-clip instrument for blood oxygen monitoring of human body and pulse wave TCM diagnosis, which is suitable for various occasions such as hospitals and families.

Background technique

Diagnosing the pulse is an original diagnostic method of traditional Chinese medicine, because the pulse contains rich physiological and pathological information of the human body. Chinese medicine applies different pressures, and uses three fingers to press the pulse at the radial artery of the wrist, which is called "cun, guan, chi". The patient's pulse frequency, rhythm, shape, The comprehensive image (pulse condition) of changes such as depth and strength, and then to diagnose the patient's condition. In recent years, the objectification and scientization of TCM pulse diagnosis has been a research hotspot in the industry. Using electronic technology to measure pulse is not only an important content of pulse theory research, but also an important application of electronic technology in the medical field.

Contents of the invention

The invention uses photoelectric conversion technology to detect weak signals with high precision, and has the functions of pulse wave diagnosis and display, and can realize the detection of some pathological parameters by combining with the pulse diagnosis theory of traditional Chinese medicine. The system includes light sensor, boost and amplifier circuit, filter circuit, A/D conversion circuit, single chip microcomputer and display screen. The light sensor converts the measured pulse signal into an electrical signal, the booster and amplifier circuit amplifies the electrical signal, the filter circuit purifies the signal, the A/D conversion circuit converts the analog signal into a digital signal, and the single-chip microcomputer performs signal processing and combines traditional Chinese medicine The pulse diagnosis theory is analyzed, and finally the results are displayed.

Description of drawings

Fig. 1 is a hardware circuit system diagram of the present invention.

Fig. 2 is a software flow chart of the present invention.

Detailed ways

The present invention is described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the hardware circuit design adopts the single-chip microcomputer system as the lower computer and the PC as the upper computer. The detected human pulse signal is converted into an electrical signal through an optical sensor, and the signal is amplified by a booster and amplifying circuit. The filter circuit purifies the signal, and converts the analog signal into a digital signal through the A/D conversion circuit and transmits it to the single-chip microcomputer. After the signal processing and analysis by the single-chip microcomputer, it can be transmitted to the PC through the USB, and the pulse waveform and For pulse analysis results, the small display screen can also be connected with the single-chip microcomputer, and the waveform and analysis results can be directly displayed on the lower computer.

As shown in Figure 2, the software functions of the entire system are realized on the MSP430 series single-chip microcomputer (which can be replaced by other types of single-chip microcomputer). The specific implementation process is as follows: firstly, the single-chip microcomputer is restarted by triggering the IO port interrupt by pressing the button, and then the IO of the single-chip microcomputer is initialized. Ports, registers and various variables, and then enter the low-power waiting mode in the main loop. The signal acquisition frequency is 200Hz, and an interrupt will be generated by the timer every 5ms to wake up the microcontroller from the low-power standby mode to run other modules. The display program displays the blood oxygen value, pulse value, pulse waveform, and pulse diagnosis parameters, and judges whether a finger is detected. If so, adjust the unit reference value of the displayed waveform. Otherwise, judge whether the time without a finger has exceeded the threshold, and if so, turn off the display. , Back up the register and enter the standby mode, otherwise enter the previous step to continue to judge, and then calculate the blood oxygen value and pulse rate, and analyze the pulse wave to calculate the relevant parameters of pulse diagnosis.

Although the present invention has been disclosed above with preferred embodiments, the embodiments and accompanying drawings are not intended to limit the present invention, and any person familiar with the art can make various changes without departing from the spirit and scope of the present invention. Or modification, but also within the protection scope of the present invention. Therefore, the protection scope of the present invention should be defined by the protection scope of the claims of the present application.

Claims (4)

1. A finger-clip pulse oximeter with the function of pulse diagnosis in traditional Chinese medicine is characterized in that: it analyzes the pulse parameters of the human body measured by the finger-clip pulse oximeter in conjunction with the theory of pulse diagnosis in traditional Chinese medicine, and analyzes the results. show. 2. The finger-clip pulse oximeter with the function of TCM pulse oximeter according to claim 1, characterized in that: the software of the finger-clip pulse oximeter includes a combination of TCM pulse diagnosis theory, analysis of pulse waves, and calculation of pulse-diagnosis correlations. parameter software. 3. The finger-clip pulse oximeter with the function of TCM pulse diagnosis according to claim 1, characterized in that: the finger-clip pulse oximeter includes an optical sensor, a boost and amplifying circuit, a filter circuit, an A/D conversion circuit, single-chip microcomputer and display screen, the light sensor converts the measured pulse signal into an electrical signal, the boost and amplification circuit amplifies the electrical signal, the filter circuit purifies the signal, and the A/D conversion The circuit converts the analog signal into a digital signal, the single-chip microcomputer processes and analyzes the signal, and the display screen displays the result. 4. a method for diagnosing pulse of the finger-clip pulse oximeter with TCM pulse-diagnosing function as claimed in claim 3, is characterized in that: first trigger the IO port interruption by button to realize single-chip restart, initialize the IO port, register and Each variable, and then enter the low-power waiting mode in the main loop; the signal acquisition frequency is 200Hz, and an interrupt is generated by the timer every fixed time to wake up the microcontroller from the low-power standby mode to run other modules; the display screen The blood oxygen value, pulse value, pulse waveform, and pulse diagnosis parameters are displayed through the display program, and the display program judges whether a finger is detected. If a finger is detected, the unit reference value of the displayed waveform is adjusted. If no finger is detected, it is judged that no finger is placed. If the time exceeds the threshold, if so, turn off the display, backup registers and enter standby mode, otherwise enter the previous step to continue judging; calculate blood oxygen value and pulse rate, analyze pulse wave, and calculate pulse diagnosis related parameters.

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