High-precision self-adaptive human body physiological signal tester and testing method

A signal tester, human physiological technology, applied in the direction of instruments, applications, electrical digital data processing, etc., can solve the problems of expensive instruments, cumbersome detection methods, low detection accuracy, etc., and achieve the effect of improving accuracy and signal processing accuracy

Inactive Publication Date: 2019-04-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at solving technical problems such as low detection accuracy, cumbersome detection methods, and expensive instruments in current weak signal detection methods, the present invention provides a self-adaptive sensor with high precision, good stability, strong anti-interference, low noise, simple operation, and low price. The human physiological signal tester and test method can measure human physiological signals with high precision, low noise and stability, and realize the recording and data processing of such signals, thereby improving the accuracy of signal detection and processing

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  • High-precision self-adaptive human body physiological signal tester and testing method
  • High-precision self-adaptive human body physiological signal tester and testing method
  • High-precision self-adaptive human body physiological signal tester and testing method

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Embodiment 1

[0041] In order to overcome the problems existing in the prior art of human physiological signal testing, an embodiment of the present invention proposes a high-precision self-adapting human physiological signal tester and testing method.

[0042] Such as Figure 1 to Figure 4 As shown, the high-precision self-adaptive human physiological signal tester described in this embodiment includes a shielding shell 7 and a PCB circuit board 15, and the PCB circuit board 15 is provided with a circuit wiring area 10, a BNC connector 11, a signal gating switch 12 and a signal The magnification adjustment knob 13, the circuit wiring area 10 includes an adaptive matching adjustment circuit module 101, a high-impedance signal receiving circuit module 102, a first-stage amplification circuit module 103, a voltage following circuit module 104, a second-stage amplification and low-pass filter circuit Module 105, signal inverting amplification circuit module 106, protection circuit module 107, ...

Embodiment 2

[0057] According to the technical scheme described in embodiment 1, and in combination Figures 1 to 4 , carry out the tester debugging experiment:

[0058] The signal source inputs standard sinusoidal signals with a frequency of 10-400Hz and an amplitude of 0.55-1.18mV to the detector respectively. In order to measure the stability and accuracy of the detector, the average value of 5 signals for each signal type is taken as the measurement result analysis, and the debugging experimental data processing results are shown in Table 1:

[0059]

[0060] Table 1

[0061] From the data processing results of the tester debugging experiment shown in Table 1, it can be concluded that the amplitude error and frequency response error of the tester are within 0.5%, and the results of multiple measurements are consistent. It can be concluded that the high-precision adaptive human physiological signal tester can measure low-frequency weak signals stably and accurately, which meets the...

Embodiment 3

[0063] According to the technical scheme described in embodiment 1, and in combination Figures 1 to 4 , for human pulse signal detection:

[0064] First, connect the detector, connect the signal gating switch to signal path 2, and test that the detector can work normally; secondly, fix the pulse sensor at the radial artery of the tester's arm and connect the sensor signal output to the detector input Then, observe the pulse signal waveform on the oscilloscope to collect waveform data after the waveform is stable (the tester is in a resting and stable state at this time); finally, analyze and process the sampled data to obtain a pulse signal without noise interference. Experimental testers are 23-year-old and 26-year-old female and male without medical history. The time domain and frequency spectrum signals of the experimental results are as follows: Figure 5 to Figure 10 shown.

[0065] Figure 5 to Figure 10 The pulse experiment test results are shown: Figure 5 , Ima...

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Abstract

The invention relates to a high-precision self-adaptive human body physiological signal tester and a testing method thereof. A PCB circuit board (15) is provided with a circuit wiring area (10), a BNCconnector (11), a signal gating switch (12) and a signal amplification factor adjusting knob (13), a shielding shell (7) is provided with a sensor circuit signal input end hole (1), a signal test output end hole (2), a positive power supply end hole (3) and the like; the PCB circuit board (15) is arranged in the shielding shell (7), the circuit wiring, signal I/O port, BNC connector (11), signalgating switch (12) and signal amplification factor adjusting knob (13) of the PCB circuit board (15) are led out and connected with external equipment throughthe sensor circuit signal input end hole (1), signal test output end hole (2), positive power supply end hole (3) and the like in the shielding shell (7). The tester not only can achieve recording and data processing of human physiological signals, but also has high signal detection and processing precision.

Description

technical field [0001] The invention relates to the technical field of signal detection and processing, in particular to a high-precision self-adapting human physiological signal tester and a test method. Background technique [0002] Human physiological signals are inherent biological signals in the human body, including ECG, EEG, EMG, pulse, heart sounds, bowel sounds and other signals. Clinically, human physiological signals are often used as an important method for the diagnosis and treatment of patients' diseases. Measuring human physiological signals plays a vital role in the diagnosis and treatment of patient diseases. Human physiological signal is a kind of ultra-low frequency and extremely weak signal. Its frequency is generally below 30Hz and its amplitude is below level 10-3. It is often submerged in the background of strong noise. Clinically, it is necessary to accurately detect, analyze and identify human physiological signals submerged in strong noise. In a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00G06F17/50
CPCA61B5/00A61B5/7203A61B5/7225A61B5/725G06F30/392
Inventor 韩磊郎平姚璐宋钦昊
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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