Pulse detection device and automatic pulse feeling method

Abstract

The invention discloses a pulse detection device and an automatic pulse taking method, and relates to the technical field of medical instruments.The pulse detection device comprises a pulse detection body used for being worn on the hand and further comprises a first fingerstall, a second fingerstall and a third fingerstall which are worn on the index finger, the middle finger and the ring finger of a doctor respectively, and the first fingerstall, the second fingerstall and the third fingerstall are connected; piezoresistive pressure sensors are arranged at finger pulps of the first fingerstall, the second fingerstall and the third fingerstall respectively, the pulse detection body further comprises a signal conditioning circuit arranged at the position of the hand back, the piezoresistive pressure sensors are electrically connected with the signal conditioning circuit, and the signal conditioning circuit is used for detecting a first state when the first state is detected. And the processor is used for converting from the standby mode to the working mode, receiving a signal of the piezoresistive pressure sensor, processing the signal and sending the processed signal to the upper computer, and is also used for converting from the working mode to the standby mode when a second state is detected. The pulse condition data and the floating, middle and sinking pressure can be automatically collected when a doctor takes the pulse, the doctor does not need to control, the complete information such as the pulse diagnosis state, the floating, middle and sinking pressure and the cun-guan-chi pulse condition can be detected, and fusion of manual pulse taking and sensor pulse taking is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to a pulse detection device and an automatic pulse diagnosis method. Background Art

[0002] "Pulse" is an indispensable and extremely important part of the four important methods of TCM diagnosis: observation, smell, questioning, and palpation. Traditional TCM pulse diagnosis relies entirely on the experience of TCM physicians to make subjective judgments. With the need for quantitative and international development of TCM, pulse diagnosis devices that use sensor technology to obtain pulse information have appeared in recent years. However, the existing technical solutions cannot achieve human-machine integration, do not conform to the doctor's pulse diagnosis habits, require doctors to operate the start and stop of the pulse diagnosis device, and have problems such as inaccurate positioning of the Cun, Guan, and Chi, and poor control of the floating, middle, and sinking pressures applied by mechanical or pneumatic means, which may cause abnormalities in the data information collected by the pulse diagnosis device, leading to misdiagnosis. Summary of the invention

[0003] The purpose of the present invention is to provide a pulse detection device and an automatic pulse diagnosis method, which can automatically collect floating, middle and sinking pressure and inch, guan and chi pulse data when the doctor diagnoses the pulse, without the need for the doctor to operate the equipment, thereby realizing the fusion of manual and sensor pulse diagnosis.

[0004] The present invention solves the above problems through the following technical solutions:

[0005] A pulse detection device includes a pulse detection body for being worn on the hand, and also includes a first finger cuff, a second finger cuff and a third finger cuff respectively worn on the doctor's index finger, middle finger and ring finger, wherein the first finger cuff, the second finger cuff and the third finger cuff are respectively provided with piezoresistive pressure sensors at the fingertips, and the pulse detection body also includes a signal conditioning circuit arranged at the back of the hand, the piezoresistive pressure sensor is electrically connected to the signal conditioning circuit, and the signal conditioning circuit is used to switch from a standby mode to an operating mode when a first state is detected, to receive a signal from the piezoresistive pressure sensor and perform signal processing, and to send the processed signal to a host computer, and also to switch from the operating mode to the standby mode when a second state is detected.

[0006] Furthermore, the pulse detection body is integrally connected with the first finger cuff, the second finger cuff and the third finger cuff.

[0007] Furthermore, the piezoresistive pressure sensor is electrically connected to the signal conditioning circuit via a wire along the finger.

[0008] Furthermore, the signal conditioning circuit includes an inch sensing amplification module, a switch sensing amplification module, a ruler sensing amplification module, a state detection module, and a microcontroller module, wherein:

[0009] An inch sensing amplification module, used for detecting the signal of the piezoresistive pressure sensor of the first finger sleeve to obtain an inch sensing signal and amplifying and processing it, and then outputting an inch finger pressure signal and an inch pulse signal to the microcontroller module;

[0010] A closing sensing amplifying module, used for detecting the electrical signal of the piezoresistive pressure sensor of the second finger sleeve to obtain a closing sensing signal and amplifying and processing it, and then outputting a closing finger pressure signal and a closing pulse signal to the microcontroller module;

[0011] A ruler sensing amplification module, used for detecting the electrical signal of the piezoresistive pressure sensor of the third finger sleeve to obtain a ruler sensing signal and amplifying and processing it, and then outputting a ruler finger pressure signal and a ruler pulse signal to the microcontroller module;

[0012] A state detection module, used for obtaining a pulse diagnosis state signal according to the Cun sensing signal, Guan sensing signal and Chi sensing signal, and inputting the pulse diagnosis state signal into the micro-control module;

[0013] The microcontroller module is used to determine whether the current state is the first state or the second state according to the pulse diagnosis state signal, and switch to the working mode or the standby mode. In the working mode, the microcontroller receives signals from the inch sensing amplifier module, the switch sensing amplifier module, and the ruler sensing amplifier module, and sends them to the host computer after processing.

[0014] Furthermore, the first state is detecting that the high level duration of the pulse diagnosis state signal reaches a preset time T1.

[0015] Furthermore, the second state is when it is detected that the pulse diagnosis state signal changes from a high level to a low level for a duration reaching a preset time T2.

[0016] Furthermore, the inch sensing amplification module includes:

[0017] The first sensing circuit includes a resistor R 01 , the resistor R 01 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the first finger sleeve and then grounded;

[0018] The input end of the first pass amplifier and the first low pass amplifier is connected to the resistor R 01 The second end of the first low-pass amplifier is connected to the first input end of the micro-control module;

[0019] A first high-pass amplifier, the input end of which is connected to the resistor R 01 The second end of the first high-pass amplifier is connected to the second input end of the micro-control module;

[0020] The switch sensing amplification module comprises:

[0021] The second sensing circuit includes a resistor R 02 , the resistor R 02 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the second finger sleeve and then grounded;

[0022] The input end of the second pass amplifier and the second low pass amplifier is connected to the resistor R 02 The second end of the second low-pass amplifier is connected to the third input end of the micro-control module;

[0023] A second high-pass amplifier, the input end of which is connected to the resistor R 02 The second end of the second high-pass amplifier is connected to the fourth input end of the micro-control module;

[0024] The ruler sensing amplification module comprises:

[0025] The third induction circuit includes a resistor R 03 , the resistor R 03 The first end is connected to the power supply VCC, the resistor R 03 The second end is connected to the piezoresistive pressure sensor of the third finger sleeve and then grounded;

[0026] The input end of the third pass amplifier and the third low pass amplifier is connected to the resistor R 03 The second end of the third low-pass amplifier is connected to the fifth input end of the micro-control module;

[0027] A third high-pass amplifier, the input end of the third high-pass amplifier is connected to the resistor R 03 The second end of the third high-pass amplifier is connected to the sixth input end of the micro-control module;

[0028] Furthermore, the state detection module includes a diode D1, a diode D2, a diode D3, a resistor R1 and a comparator, wherein the cathode of the diode D1 is connected to the resistor R 01 The second end of the diode D2 is connected to the cathode of the resistor R 02 The second end of the diode D3 is connected to the cathode of the resistor R 03 The second end of the resistor R1 is connected to the power supply VCC, the anodes of the diodes D1, D2 and D3 are connected to the first end of the resistor R1 and the inverting input end of the comparator, the positive input end of the comparator is connected to the reference voltage, the output end of the comparator is connected to the micro-control module, and the second end of the resistor R1 is connected to the power supply VCC.

[0029] The automatic pulse diagnosis method implemented by the pulse detection device comprises:

[0030] Step 1: Before the doctor puts on the pulse detection body, the signal conditioning circuit obtains the pulse diagnosis state signal as a low level from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff, and the microcontroller module in the signal conditioning circuit is in standby mode;

[0031] Step 2: When the doctor wears the pulse detection device and touches the patient's wrist to feel the pulse, the state detection module in the signal conditioning circuit obtains a pulse diagnosis state signal of high level from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff, and the microcontroller module enters the working mode from the standby mode;

[0032] Step 3, when the high level duration reaches the preset time T1, the microcontroller module starts to collect Cun finger pressure signals, Cun pulse signals, Guan finger pressure signals, Guan pulse signals, Chi finger pressure signals and Chi pulse signals, and sends them to the host computer after processing, and starts automatic pulse diagnosis; the Cun finger pressure signals and Cun pulse signals are detected by the Cun sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the first finger cuff, the Guan finger pressure signals and Guan pulse signals are detected by the Guan sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the second finger cuff, and the Chi finger pressure signals and Chi pulse signals are detected by the Chi sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the third finger cuff;

[0033] Step 4: When the doctor's fingers leave the patient's wrist and the pulse diagnosis is finished, when the pulse diagnosis state signal obtained by the state detection module from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff is low, the microcontroller module stops pulse acquisition and automatically ends the pulse diagnosis;

[0034] Step 5: When the duration of the low level signal reaches the preset time T2, the microcontroller module enters the standby mode from the working mode.

[0035] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0036] (1) The present invention can automatically collect pulse data and floating, middle and sinking pressure when the doctor feels the pulse, without the need for the doctor to operate, and can detect complete information such as pulse diagnosis status, floating, middle and sinking pressure, inch, guan and chi pulses, thereby realizing the integration of manual and sensor pulse feeling.

[0037] (2) The present invention uses the doctor's three fingers to detect the pulse, which not only maintains the doctor's pulse feeling and traditional pulse feeling habits, realizes non-sensitive pulse data collection, but also avoids the problems of inaccurate positioning of Cun, Guan, and Chi and inaccurate floating, middle, and sinking pressures, which is conducive to collecting real and accurate pulse data.

[0038] (3) The present invention can not only quantify the pressure strength of the floating, middle and sinking pulses of famous old Chinese medicine practitioners, but also guide inexperienced doctors on how much pressure to apply when taking the floating, middle and sinking pulses, and has a strong clinical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the present invention;

[0040] Figure 2 is a circuit schematic diagram of the present invention;

[0041] Figure 3 This is a flow chart of the automatic pulse diagnosis of the present invention;

[0042] Among them, 1-pulse detection body; 2-first finger cuff; 3-second finger cuff; 4-third finger cuff. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0044] Example 1

[0045] Combined with Figure 1 As shown, a pulse detection device includes a pulse detection body 1 for wearing on the hand, and also includes a first finger cuff 2, a second finger cuff 3 and a third finger cuff 4 respectively worn on the doctor's index finger, middle finger and ring finger, and the first finger cuff 2, the second finger cuff 3 and the third finger cuff 4 are connected, and the finger pulps of the first finger cuff 2, the second finger cuff 3 and the third finger cuff 4 are respectively provided with piezoresistive pressure sensors, and the pulse detection is performed with the help of the doctor's three fingers, thereby avoiding the problem of inaccurate positioning of Cun, Guan and Chi and the pressure of floating, middle and sinking. The pulse detection body 1 also includes a signal conditioning circuit arranged at the back of the hand, and the piezoresistive pressure sensor is electrically connected to the signal conditioning circuit. The signal conditioning circuit is used to switch from standby mode to working mode when a first state is detected, and is used to receive the signal of the piezoresistive pressure sensor and perform signal processing, and send the processed signal to the host computer, and is also used to switch from working mode to standby mode when a second state is detected.

[0046] Furthermore, the pulse detection body 1 is integrally connected with the first finger cuff 2 , the second finger cuff 3 and the third finger cuff 4 .

[0047] Furthermore, the piezoresistive pressure sensor is electrically connected to the signal conditioning circuit via a wire along the finger.

[0048] Furthermore, the signal conditioning circuit includes an inch sensing amplification module, a switch sensing amplification module, a ruler sensing amplification module, a state detection module, and a microcontroller module, wherein:

[0049] An inch sensing amplification module, used for detecting the signal of the piezoresistive pressure sensor of the first finger sleeve 2 to obtain an inch sensing signal and amplifying and processing it, and then outputting an inch finger pressure signal and an inch pulse signal to the microcontroller module;

[0050] A closing sensing amplifying module, used for detecting the electrical signal of the piezoresistive pressure sensor of the second finger sleeve 3 to obtain a closing sensing signal and amplifying and processing it, and then outputting a closing finger pressure signal and a closing pulse signal to the microcontroller module;

[0051] A ruler sensing amplification module, used for detecting the electrical signal of the piezoresistive pressure sensor of the third finger sleeve 4 to obtain a ruler sensing signal and amplifying and processing it, and then outputting a ruler finger pressure signal and a ruler pulse signal to the microcontroller module;

[0052] A state detection module, used for obtaining a pulse diagnosis state signal according to the Cun sensing signal, Guan sensing signal and Chi sensing signal, and inputting the pulse diagnosis state signal into the micro-control module;

[0053] The microcontroller module is used to determine whether the current state is the first state or the second state according to the pulse diagnosis state signal, and switch to the working mode or the standby mode. In the working mode, the microcontroller receives signals from the inch sensing amplifier module, the switch sensing amplifier module, and the ruler sensing amplifier module, and sends them to the host computer after processing.

[0054] It is worth noting that the microcontroller module also includes an analog-to-digital conversion unit, a communication unit, and a power management unit, which are all commonly used circuit modules in the art and will not be described in detail here.

[0055] Furthermore, the first state is when the pulse diagnosis state signal is detected to have a high level duration reaching a preset time T1. The present invention does not require a doctor to operate, and when the conditions are met, the pulse detection device automatically collects pulse data.

[0056] Furthermore, the second state is when it is detected that the pulse diagnosis state signal changes from a high level to a low level for a duration reaching a preset time T2.

[0057] Furthermore, if Figure 2 As shown, the inch sensing amplification module includes:

[0058] The first sensing circuit includes a resistor R 01 , the resistor R 01 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the first finger sleeve 2 and then grounded;

[0059] The input end of the first pass amplifier and the first low pass amplifier is connected to the resistor R 01 The second end of the first low-pass amplifier is connected to the first input end of the micro-control module;

[0060] A first high-pass amplifier, the input end of which is connected to the resistor R 01 The second end of the first high-pass amplifier is connected to the second input end of the micro-control module;

[0061] The inch sensing amplifier module includes a sensing circuit, a low-pass amplifier, and a high-pass amplifier, wherein the sensing circuit is composed of a power supply VCC, a resistor R 01 A resistor voltage-dividing network is formed with a piezoresistive sensor Rs arranged in the index finger sleeve. The resistance value of the piezoresistive sensor Rs changes with the changes in the doctor's index finger pressure and the patient's radial artery pulse pressure. The generated inch sensing signals are respectively input into the low-pass amplifier, the high-pass amplifier and the negative end of the diode D1 of the state detection module; the low-pass amplifier is used to perform low-pass filtering on the inch sensing signals to obtain the pressure signals applied by the doctor's index finger when taking the floating, middle and sinking pulses, and further amplify them to obtain the inch finger pressure signals; the high-pass amplifier is used to perform high-pass filtering on the inch sensing signals to obtain the patient's pulse condition signals, and further amplify them to obtain the inch pulse condition signals.

[0062] In order to improve the accuracy of pulse data, the piezoresistive sensor Rs at each fingertip may also adopt a sensor array composed of multiple sensitive units, as long as the signal conditioning circuit submodule is also increased accordingly.

[0063] Preferably, the cutoff frequency of the low-pass amplifier is 0.8Hz, which is used to perform low-pass filtering on the Cun sensing signal to obtain the pressure signal applied by the index finger when the doctor takes the floating, middle and sinking pulse, and further amplify it to obtain the Cun finger pressure signal; the cutoff frequency of the high-pass amplifier is 0.5Hz, which is used to perform high-pass filtering on the Cun sensing signal to obtain the patient's pulse signal and further amplify it to obtain the Cun pulse signal.

[0064] The finger pressure signal reflects the "floating, middle, and sinking" pressure applied by the doctor's fingers when feeling the pulse. The doctor needs to check the patient's pulse under different pressures. The signal is used to digitize the pulse feeling pressure of experienced and famous Chinese medicine practitioners as one of the important data in the Chinese medicine database. At the same time, it guides inexperienced doctors on how much pressure to apply when feeling the pulse. The pulse signal is the patient's pulse wave detected by the sensor, which is used to judge the patient's pulse and then judge the health status. The pulse judgment algorithm and the corresponding relationship between the pulse and the health status are not within the scope of protection of the present invention and will not be repeated here.

[0065] The switch sensing amplification module comprises:

[0066] The second sensing circuit includes a resistor R 02 , the resistor R 02 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the second finger sleeve 3 and then grounded;

[0067] The input end of the second pass amplifier and the second low pass amplifier is connected to the resistor R 02 The second end of the second low-pass amplifier is connected to the third input end of the micro-control module;

[0068] A second high-pass amplifier, the input end of which is connected to the resistor R 02 The second end of the second high-pass amplifier is connected to the fourth input end of the micro-control module;

[0069] The ruler sensing amplification module comprises:

[0070] The third induction circuit includes a resistor R 03 , the resistor R 03 The first end is connected to the power supply VCC, the resistor R 03 The second end is connected to the piezoresistive pressure sensor of the third finger sleeve 4 and then grounded;

[0071] The input end of the third pass amplifier and the third low pass amplifier is connected to the resistor R 03 The second end of the third low-pass amplifier is connected to the fifth input end of the micro-control module;

[0072] A third high-pass amplifier, the input end of the third high-pass amplifier is connected to the resistor R 03 The second end of the third high-pass amplifier is connected to the sixth input end of the micro-control module;

[0073] The switch sensing amplifier module and the scale sensing amplifier module use the same function and structure as the inch sensing amplifier module. Figure 2 The specific circuits of the switch sensing amplifier module and the scale sensing amplifier module are omitted.

[0074] Furthermore, the state detection module includes a diode D1, a diode D2, a diode D3, a resistor R1 and a comparator, wherein the cathode of the diode D1 is connected to the resistor R 01 The second end of the diode D2 is connected to the cathode of the resistor R 02 The second end of the diode D3 is connected to the cathode of the resistor R 03 The second end of the resistor R1 is connected to the power supply VCC, the anodes of the diodes D1, D2 and D3 are connected to the first end of the resistor R1 and the inverting input end of the comparator, the positive input end of the comparator is connected to the reference voltage, the output end of the comparator is connected to the micro-control module, and the second end of the resistor R1 is connected to the power supply VCC.

[0075] When the doctor feels the patient's pulse, any finger presses the Cun or / and Guan or / and Chi of the patient's radial artery, the diode is turned on, the voltage at the inverting input terminal of the voltage comparator is lower than the reference voltage Vref, and the voltage comparator outputs a high level, indicating that the doctor is currently in the state of feeling the patient's pulse. Preferably, in this embodiment, the reference voltage Vref is 0.3V.

[0076] Embodiment 2:

[0077] An automatic pulse diagnosis method is implemented by using a pulse detection device, comprising:

[0078] Step 1: Before the doctor puts on the pulse detection body 1, the signal conditioning circuit obtains the pulse diagnosis state signal as a low level from the signal detected by the piezoresistive pressure sensor in the first finger cuff 2, the second finger cuff 3, and the third finger cuff 4, and the microcontroller module in the signal conditioning circuit is in standby mode;

[0079] Step 2: When the doctor wears the pulse detection device and touches the patient's wrist to feel the pulse, the state detection module in the signal conditioning circuit obtains the pulse diagnosis state signal as a high level from the signal detected by the piezoresistive pressure sensors in the first finger cuff 2, the second finger cuff 3, and the third finger cuff 4, and the microcontroller module enters the working mode from the standby mode;

[0080] Step 3, when the high level duration reaches the preset time T1, the microcontroller module starts to collect Cun finger pressure signals, Cun pulse signals, Guan finger pressure signals, Guan pulse signals, Chi finger pressure signals and Chi pulse signals, and sends them to the host computer after processing, and starts automatic pulse diagnosis; the Cun finger pressure signals and Cun pulse signals are detected by the Cun sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the first finger cuff 2, the Guan finger pressure signals and Guan pulse signals are detected by the Guan sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the second finger cuff 3, and the Chi finger pressure signals and Chi pulse signals are detected by the Chi sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the third finger cuff 4;

[0081] Step 4: When the doctor's fingers leave the patient's wrist and the pulse diagnosis is finished, the state detection module obtains a pulse diagnosis state signal of low level from the signal detected by the piezoresistive pressure sensor in the first finger cuff 2, the second finger cuff 3, and the third finger cuff 4, and the microcontroller module stops the pulse acquisition and automatically ends the pulse diagnosis;

[0082] Step 5: When the duration of the low level signal reaches the preset time T2, the microcontroller module enters the standby mode from the working mode.

[0083] Specifically, combined Figure 3 As shown:

[0084] Before time t0, the pulse diagnosis state signal is at a low level, and the pulse detection device is in a low power consumption standby mode.

[0085] At time t0, when the doctor puts on the finger sleeve and touches the patient's wrist to prepare for taking the pulse, the pulse diagnosis state signal jumps to a high level, waking up the microcontroller unit MCU, and putting the pulse detection device into working state.

[0086] At time t1, the microcontroller unit MCU detects that the high level duration of the pulse diagnosis status signal reaches the preset time T1, indicating that the doctor starts to take the pulse stably. The microcontroller unit MCU immediately starts to collect the Cun, Guan, and Chi finger pressure signals and pulse signals, performs pulse analysis on the data, and sends them to the host computer to start automatic pulse diagnosis.

[0087] At time t2, the doctor's fingers leave the patient's wrist and the pulse diagnosis is finished. The microcontroller unit MCU detects that the pulse diagnosis status signal has changed to a low level, stops pulse acquisition, and automatically ends the pulse diagnosis.

[0088] At time t3, the microcontroller unit MCU detects that the duration of the pulse diagnosis state signal changing from a high level to a low level reaches a preset time T2, and controls the pulse detection device to return to the initial low-power standby mode.

[0089] In this embodiment, T1 is set to 1 second, and T2 is set to 300 seconds.

[0090] The present invention realizes automatic collection of pulse data without the need for doctor's manipulation, thereby complying with the traditional pulse-feeding habits of doctors. In addition, the present invention can detect complete information such as pulse diagnosis status, floating, middle and sinking pressures, and inch, guan and chi pulses. Among them, the pulse diagnosis status information is used to realize the aforementioned automatic collection of pulse data, and the floating, middle and sinking pressures are used to quantify the pressure when famous old Chinese medicine doctors take the pulse (digitizing the experience and providing a data source for the Chinese medicine database), and provide guidance on the floating, middle and sinking pressure when taking the pulse for inexperienced doctors, which has clinical significance.

[0091] In addition, the present invention realizes low power consumption by detecting the pulse diagnosis state signal and switching the standby mode and the working mode of the microcontroller module.

[0092] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are only preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A pulse detection device, characterized in that: The invention comprises a pulse detection body for being worn on the hand, and also comprises a first finger cuff, a second finger cuff and a third finger cuff which are respectively worn on the doctor's index finger, middle finger and ring finger, wherein the first finger cuff, the second finger cuff and the third finger cuff are respectively provided with piezoresistive pressure sensors at the fingertips, and the pulse detection body also comprises a signal conditioning circuit arranged at the back of the hand, wherein the piezoresistive pressure sensor is electrically connected to the signal conditioning circuit, and the signal conditioning circuit is used to switch from the standby mode to the working mode when a first state is detected, to receive the signal of the piezoresistive pressure sensor and perform signal processing, and to send the processed signal to the host computer, and also to switch from the working mode to the standby mode when a second state is detected.

2. A pulse detection device according to claim 1, characterized in that: The pulse detection body is integrally connected with the first finger cuff, the second finger cuff and the third finger cuff.

3. A pulse detection device according to claim 2, characterized in that: The piezoresistive pressure sensor is electrically connected to the signal conditioning circuit via a wire along the finger.

4. A pulse detection device according to claim 1, characterized in that: The signal conditioning circuit includes an inch sensing amplifier module, a switch sensing amplifier module, a ruler sensing amplifier module, a state detection module, and a microcontroller module, wherein: An inch sensing amplification module, used for detecting the signal of the piezoresistive pressure sensor of the first finger sleeve to obtain an inch sensing signal and amplifying and processing it, and then outputting an inch finger pressure signal and an inch pulse signal to the microcontroller module; A closing sensing amplifying module, used for detecting the electrical signal of the piezoresistive pressure sensor of the second finger sleeve to obtain a closing sensing signal and amplifying and processing it, and then outputting a closing finger pressure signal and a closing pulse signal to the microcontroller module; A ruler sensing amplification module, used for detecting the electrical signal of the piezoresistive pressure sensor of the third finger sleeve to obtain a ruler sensing signal and amplifying and processing it, and then outputting a ruler finger pressure signal and a ruler pulse signal to the microcontroller module; A state detection module, used for obtaining a pulse diagnosis state signal according to the Cun sensing signal, Guan sensing signal and Chi sensing signal, and inputting the pulse diagnosis state signal into the micro-control module; The microcontroller module is used to determine whether the current state is the first state or the second state according to the pulse diagnosis state signal, and switch to the working mode or the standby mode. In the working mode, the microcontroller receives signals from the inch sensing amplifier module, the switch sensing amplifier module, and the ruler sensing amplifier module, and sends them to the host computer after processing.

5. A pulse detection device according to claim 4, characterized in that: The first state is when it is detected that the high level duration of the pulse diagnosis state signal reaches a preset time T1.

6. A pulse detection device according to claim 4, characterized in that: The second state is when it is detected that the pulse diagnosis state signal changes from a high level to a low level for a duration reaching a preset time T2.

7. A pulse detection device according to claim 4, characterized in that: The inch sensing amplification module comprises: The first sensing circuit includes a resistor R 01 , the resistor R 01 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the first finger sleeve and then grounded; The input end of the first pass amplifier and the first low pass amplifier is connected to the resistor R 01 The second end of the first low-pass amplifier is connected to the first input end of the micro-control module; A first high-pass amplifier, the input end of which is connected to the resistor R 01 The second end of the first high-pass amplifier is connected to the second input end of the micro-control module; The switch sensing amplification module comprises: The second sensing circuit includes a resistor R 02 , the resistor R 02 The first end is connected to the power supply VCC, the resistor R 01 The second end is connected to the piezoresistive pressure sensor of the second finger sleeve and then grounded; The input end of the second pass amplifier and the second low pass amplifier is connected to the resistor R 02 The second end of the second low-pass amplifier is connected to the third input end of the micro-control module; A second high-pass amplifier, the input end of which is connected to the resistor R 02 The second end of the second high-pass amplifier is connected to the fourth input end of the micro-control module; The ruler sensing amplification module comprises: The third induction circuit includes a resistor R 03 , the resistor R 03 The first end is connected to the power supply VCC, the resistor R 03 The second end is connected to the piezoresistive pressure sensor of the third finger sleeve and then grounded; The input end of the third pass amplifier and the third low pass amplifier is connected to the resistor R 03 The second end of the third low-pass amplifier is connected to the fifth input end of the micro-control module; A third high-pass amplifier, the input end of the third high-pass amplifier is connected to the resistor R 03 The second end of the third high-pass amplifier is connected to the sixth input end of the micro-control module.

8. A pulse detection device according to claim 7, characterized in that: The state detection module includes a diode D1, a diode D2, a diode D3, a resistor R1 and a comparator. The cathode of the diode D1 is connected to the resistor R 01 The second end of the diode D2 is connected to the cathode of the resistor R 02 The second end of the diode D3 is connected to the cathode of the resistor R 03 The second end of the resistor R1 is connected to the power supply VCC, the anodes of the diodes D1, D2 and D3 are connected to the first end of the resistor R1 and the inverting input end of the comparator, the positive input end of the comparator is connected to the reference voltage, the output end of the comparator is connected to the micro-control module, and the second end of the resistor R1 is connected to the power supply VCC.

9. An automatic pulse diagnosis method implemented by a pulse detection device as claimed in any one of claims 1 to 8, characterized in that: include: Step 1: Before the doctor puts on the pulse detection body, the signal conditioning circuit obtains the pulse diagnosis state signal as a low level from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff, and the microcontroller module in the signal conditioning circuit is in standby mode; Step 2: When the doctor wears the pulse detection device and touches the patient's wrist to feel the pulse, the state detection module in the signal conditioning circuit obtains a pulse diagnosis state signal of high level from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff, and the microcontroller module enters the working mode from the standby mode; Step 3, when the high level duration reaches the preset time T1, the microcontroller module starts to collect Cun finger pressure signals, Cun pulse signals, Guan finger pressure signals, Guan pulse signals, Chi finger pressure signals and Chi pulse signals, and sends them to the host computer after processing, and starts automatic pulse diagnosis; the Cun finger pressure signals and Cun pulse signals are detected by the Cun sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the first finger cuff, the Guan finger pressure signals and Guan pulse signals are detected by the Guan sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the second finger cuff, and the Chi finger pressure signals and Chi pulse signals are detected by the Chi sensing amplifier module in the signal conditioning circuit from the piezoresistive pressure sensor in the third finger cuff; Step 4: When the doctor's fingers leave the patient's wrist and the pulse diagnosis is finished, when the pulse diagnosis state signal obtained by the state detection module from the signals detected by the piezoresistive pressure sensors in the first finger cuff, the second finger cuff, and the third finger cuff is low, the microcontroller module stops pulse acquisition and automatically ends the pulse diagnosis; Step 5: When the duration of the low level signal reaches the preset time T2, the microcontroller module enters the standby mode from the working mode.

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