Automatic measurement method using a pulse diagnosis instrument

Abstract

This invention discloses an automatic measurement method using a pulse diagnostic instrument, which includes a matrix pressure sensor. The method includes: an automatic positioning step, controlling the matrix pressure sensor to press down and dynamically determining whether a valid pulse location has been found; a pulse locating step, after successful positioning, controlling the matrix pressure sensor to continue pressing down and recording pulse wave signals until a condition for ending the pressing is met; and a signal analysis step, including an optimal channel determination procedure and an effective range detection procedure. The optimal channel determination procedure filters channels based on the number of valid waves and the maximum amplitude; the effective range detection procedure defines the range of continuous valid pulse waves after filtering out reverse waves.

Claims

1. An automated measurement method using a pulse diagnostic instrument, the pulse diagnostic instrument comprising a matrix pressure sensor having multiple channels, the automated measurement method using the pulse diagnostic instrument comprising: The system includes an automatic positioning step, which controls the matrix pressure sensor to perform a pressing action and analyzes the pressure signal sensed by the matrix pressure sensor in real time during the pressing process to dynamically determine whether a valid pulse position has been located; a pulse locating step, which, after successful positioning in the automatic positioning step, controls the matrix pressure sensor to continuously press down from a light touch position and records a pulse wave signal received by the multiple channels within a time interval of continuous pressing until a pressing end condition is met; and a signal analysis step, which analyzes the pulse wave signal recorded in the pulse locating step, including an optimal channel determination procedure and an effective range detection procedure; wherein the optimal channel determination procedure filters based on a number of valid waves and a maximum amplitude to select one or more optimal channels with the highest diagnostic value from the multiple channels; wherein the effective range detection procedure filters out a reverse wave from the pulse wave signal of the optimal channel and defines an effective range in which continuous valid pulse waves are located.

2. The automatic measurement method using a pulse diagnostic instrument as described in claim 1, wherein the automatic positioning step includes: The matrix pressure sensor is controlled to press downwards at a first rate until it is determined that it has contacted the skin and reached a light touch state. And when the light touch state is reached, the matrix pressure sensor is adjusted to a second rate, which is less than the first rate, to continue pressing downwards.

3. The automatic measurement method using a pulse diagnostic instrument as described in claim 2, wherein the first rate is a rapid pressure rate with a driving frequency between 30 and 50 kHz; the second rate is a slow pressure rate with a driving frequency between 1 and 5 kHz; and the light touch state refers to a DC pressure signal value between 10 and 20 mmHg.

4. The automatic measurement method using a pulse diagnostic instrument as described in claim 1, wherein the dynamic judgment in the automatic positioning step includes: The DC pressure signal from the matrix pressure sensor is monitored, and the DC pressure signal represents the average pressure signal. If the DC pressure signal is greater than a positioning failure threshold, positioning is determined to be a failure, and the matrix pressure sensor is controlled to move back to its original position.

5. The automatic measurement method using a pulse diagnostic instrument as described in claim 1, wherein the dynamic judgment in the automatic positioning step includes: Monitor an AC pulse signal from the matrix pressure sensor, wherein the AC pulse signal is a pressure pulse signal that oscillates relative to a DC pressure signal; Determine whether the AC pulse signal is greater than a dynamic threshold; and if it is greater than the dynamic threshold, calculate a duration that is continuously greater than the dynamic threshold.

6. The automatic measurement method using a pulse diagnostic instrument as described in claim 5, wherein the automatic positioning step further includes: Determine whether the duration conforms to a reasonable pulse rise time; If the duration matches the reasonable pulse rise time, then increment the pulse count by one; And when the pulse count accumulates to a pre-designed value, it is determined that the matrix pressure sensor has successfully located the effective pulse position, and the movement of the matrix pressure sensor is stopped.

7. The automatic measurement method using a pulse diagnostic instrument as described in claim 6, wherein the reasonable pulse rise time is between 0.1 and 0.5 seconds, and the preset count value is 5.

8. The automated measurement method using a pulse diagnostic instrument as described in claim 1, wherein the termination of compression conditions includes: The DC pressure signal value of the matrix pressure sensor reaches a preset pressure threshold, or the time for the matrix pressure sensor to move downward reaches a preset stop time.

9. The automatic measurement method using a pulse diagnostic instrument as described in claim 8, wherein the preset pressure threshold is between 300 and 400 mmHg, and the preset stop time is between 60 and 100 seconds.

10. The automated measurement method using a pulse diagnostic instrument as described in claim 1, wherein the optimal channel determination procedure includes: Using a fixed window to move over the pulse signal, the effective wave count and the maximum amplitude of each channel are detected and recorded; Filter out channels whose effective wave count is below a certain proportion; filter out channels whose maximum amplitude is greater than a certain pressure value; and among the remaining channels, select the two channels with the largest maximum amplitude as the optimal channels.

11. The automatic measurement method using a pulse oximeter as described in claim 10, wherein the specific proportion is between 10% and 30% of the maximum number of effective waves in all channels, and the specific pressure value is between 300 and 400 mmHg.

12. The automated measurement method using a pulse diagnostic instrument as described in claim 1, wherein the effective range detection procedure includes: Peak and trough detection is performed on the pulse signal of the optimal channel to separate multiple individual waveform signals; For each individual waveform signal, determine the relative positional relationship between a peak and a trough to identify and exclude the reverse wave; and find a signal range with an amplitude continuously greater than a fixed value, defining it as the effective range.

13. The automated measurement method using a pulse diagnostic instrument as described in claim 12, wherein the step of identifying and excluding the reverse wave includes: If the peak point is located within the range of 50% to 100% of the current waveform width, then the individual waveform signal is determined to be the reverse wave.

14. The automatic measurement method using a pulse diagnostic instrument as described in claim 1, wherein the automatic measurement method using a pulse diagnostic instrument is applied to a traditional Chinese medicine remote diagnosis system.

15. The automated measurement method using a pulse diagnostic instrument as described in claim 1 further includes: The pulse waveform within the effective range is input into an artificial intelligence model for analysis, and a traditional Chinese medicine pulse diagnosis result is generated.

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