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CN-122004799-A - Portable pulse diagnosis auxiliary device based on characteristic acquisition

CN122004799ACN 122004799 ACN122004799 ACN 122004799ACN-122004799-A

Abstract

The invention relates to the technical field of traditional Chinese medical appliances and intelligent diagnosis, and discloses a portable pulse diagnosis auxiliary device based on characteristic acquisition, which comprises a main body shell, wherein a base and a main control board are arranged in the main body shell, a three-channel servo array is arranged on the base, the three-channel servo array comprises three mutually independent servo modules, each servo module comprises a driving motor, a displacement sensor and a homologous co-located sensor head integrated with a piezoresistive sensor and a photoelectric volume pulse wave PPG sensor pair, a pulse diagnosis logic system is constructed on the main control board, and the pulse diagnosis logic system comprises a self-adaptive locating module, a data acquisition module, a diagnosis analysis module and a result output module. According to the pulse diagnosis auxiliary diagnosis method, the depth is automatically locked by utilizing the pulse energy gradient algorithm, and the synchronous acquisition of multi-position and multi-mode signals is realized by utilizing the three-channel servo array combined with the homologous co-located sensing head, so that the objectivity and the accuracy of the pulse diagnosis auxiliary diagnosis are improved.

Inventors

  • WANG XIANGHUA
  • FENG XIAOJIE
  • SUI CUICUI
  • YU JIE
  • GAO XIANMIN

Assignees

  • 商丘医学高等专科学校

Dates

Publication Date
20260512
Application Date
20260128

Claims (10)

  1. 1. The portable pulse diagnosis auxiliary device based on characteristic collection comprises a main body shell (1), and is characterized in that wrist straps (2) are arranged on two sides of the bottom of the main body shell (1), fasteners (3) are arranged on the surfaces of the wrist straps (2), a charging interface (4), an indicator lamp (5) and a switch (6) are arranged on the outer surface of the main body shell (1), and a battery (20) is arranged in the main body shell (1); A base (9) is arranged inside the main body shell (1), a three-channel servo array (8) is arranged on one side of the base (9), the three-channel servo array (8) comprises a driving motor (10), a motion output end of the driving motor (10) is connected with a sensing head (7), and the sensing head (7) is integrated with a piezoresistive sensor (12) and a PPG sensor pair (13); A main control board (14) is arranged in the main body shell (1), a microcontroller (15) and a high-performance processor (16) are integrated on the main control board (14), a communication module (19) is arranged on the main control board (14), and a pulse diagnosis logic system (100) is built on the basis of the computing resources of the microcontroller (15) and the high-performance processor (16); the pulse diagnosis logic system (100) comprises an adaptive searching module (110), a data acquisition module (120), a diagnosis analysis module (130) and a result output module (140).
  2. 2. Portable pulse-taking aid based on feature acquisition according to claim 1, characterized in that the main control board (14) is integrated with a servo drive circuit (17) and a sensing signal processing circuit (18), the microcontroller (15) and the high performance processor (16) are in data communication connection through an internal bus, the output end of the microcontroller (15) is connected to the control end of the drive motor (10) through the servo drive circuit (17), and the signal output ends of the piezoresistive sensor (12) and the PPG sensor pair (13) are connected to the data input end of the high performance processor (16) through the sensing signal processing circuit (18).
  3. 3. Portable pulse-taking aid based on feature acquisition according to claim 1, characterized in that the three-channel servo array (8) comprises three mutually independent servo modules, each comprising the drive motor (10) and a displacement sensor (11); the signal output end of the displacement sensor (11) is connected to the feedback signal input end of the microcontroller (15) and is used for transmitting real-time position data of the driving motor (10) to the microcontroller (15) to form a closed-loop control circuit.
  4. 4. The portable pulse-taking aid based on feature acquisition according to claim 1, characterized in that the drive motor (10) employs a linear voice coil motor, a stator part of the drive motor (10) being fixedly mounted on the base (9), a mover part being configured to move in a direction perpendicular to the plane of the base (9).
  5. 5. A portable pulse-taking aid based on feature collection according to claim 3, wherein the sensing head (7) adopts a multi-mode homologous co-located encapsulation structure, a flexible circuit board is arranged inside the sensing head (7), the piezoresistive sensor (12) and the PPG sensor pair (13) are integrated on the flexible circuit board, a sensing area of the piezoresistive sensor (12) covers or surrounds a central area where the PPG sensor pair (13) is located in a spatial layout, and the PPG sensor pair (13) is located in a geometric central position of an end face of the sensing head (7).
  6. 6. The portable pulse-taking aid based on feature collection according to claim 1, characterized in that the outermost end of the sensing head (7) is covered with a flexible contact layer made of a light-transmitting and elastic medical silicone material, which is liquid silicone rubber, for direct contact with the skin of the user, for linear transmission of the pressure variations caused by pulse pulses to the piezoresistive sensor (12), allowing penetration of the detection beam to reach the skin tissue.
  7. 7. The portable pulse-taking based on feature acquisition auxiliary device according to claim 5, characterized in that the inside of the adaptive finding module (110) is provided with a pulse energy calculation unit (112), the pulse energy calculation unit (112) is configured to calculate an average value as a static pressure component from a pressure signal sequence acquired by the piezoresistive sensor (12), and calculate a sum of squares of differences between each sampling point in the pressure signal sequence and the static pressure component as pulse energy at a current depth; The self-adaptive searching module (110) is internally provided with a three-weather calibrating unit (116), and the three-weather calibrating unit (116) is configured to calculate the floating depth and the sinking depth according to the middle depth by adding and subtracting a preset depth offset.
  8. 8. The portable pulse-taking assist device based on feature acquisition as defined in claim 7, wherein a depth locking unit (114) is further provided inside the adaptive searching module (110), the depth locking unit (114) being configured to continuously receive pulse energy values from the pulse energy calculating unit (112), calculate pulse energy gradients between adjacent depth steps, and determine a depth corresponding to a maximum value of pulse energy as a median depth when detecting that the pulse energy gradients change from a positive value to a non-positive value, the depth locking unit (114) being further configured to check whether the maximum pulse energy exceeds a preset effective threshold.
  9. 9. The feature acquisition-based portable pulse-taking assistance device of claim 1, wherein the data acquisition module (120) is configured to receive nine standard acquisition depth coordinate sets containing all three channels from the adaptive finding module (110); the data acquisition module (120) is further configured to control the three-channel servo array (8) to sequentially move to the nine target depth positions, and instruct the piezoresistive sensor (12) and the PPG sensor pair (13) to synchronously acquire a mechanical pulse signal and an optical pulse signal within a preset time window at each target depth position.
  10. 10. The portable pulse-taking assistance device based on feature acquisition according to claim 1, characterized in that the diagnostic analysis module (130) is internally provided with a data preprocessing unit (132), the data preprocessing unit (132) being configured to perform a normalization process on the signal sequence in the original pulse-condition data set and reconstruct it into a four-dimensional data tensor, the dimensional structure of which comprises a spatial position dimension, an acquisition depth dimension, a signal modality dimension and a time dimension; the diagnosis analysis module (130) is internally provided with a syndrome mapping network (134), the syndrome mapping network (134) is a pre-trained deep neural network model, and is configured to receive the four-dimensional data tensor, extract high-dimensional abstract features related to syndrome classification from the four-dimensional data tensor through an internal feature extraction layer, map the high-dimensional abstract features into original scores corresponding to each preset traditional Chinese medicine syndrome category through a terminal classification layer, and process the original scores by using a normalization exponential function to output probability distribution vectors containing probability values corresponding to all preset syndrome categories.

Description

Portable pulse diagnosis auxiliary device based on characteristic acquisition Technical Field The invention relates to the technical field of traditional Chinese medical appliances and intelligent diagnosis, in particular to a portable pulse diagnosis auxiliary device based on characteristic acquisition. Background The pulse diagnosis of traditional Chinese medicine is the essence in the four diagnosis of the doctor's inquiry, but the traditional pulse diagnosis is highly dependent on the experience of doctors, has the limitation of strong subjectivity and insufficient standardization, limits the popularization and the development of pulse diagnosis technology, simultaneously, along with the rapid development of artificial intelligence, sensor technology and big data, provides technical support for the research and development of pulse diagnosis instruments, makes the problem of traditional pulse diagnosis possible through modern technological means, and in addition, the shortage of traditional Chinese medicine talents in basic medical resources, urgent need of patients on convenient and accurate traditional Chinese medicine diagnosis, and promotes the research and the development of portable pulse diagnosis auxiliary devices. The theory of pulse diagnosis in traditional Chinese medicine emphasizes that three parts and nine times are needed to acquire pulse condition characteristics of different depths of floating, middle and sinking respectively at three parts of cun, guan and chi, because the subcutaneous fat thickness, the vascular anatomical position and the physiological state of different subjects are different, the optimal pulse taking depth is not uniform, most of the existing pulse diagnosis equipment adopts a preset fixed pressurizing mode, or relies on operators to manually adjust the air bag pressure to find the pulse position, the existing equipment lacks a depth self-adaptive locating mechanism based on biological signal feedback, the effective acquisition depth is difficult to accurately lock for specific users, the acquired pulse condition data is easy to deviate from the real vascular state, the difference of the floating, middle and sinking three times cannot be accurately reflected, and the standardization degree and the repeatability of the data are affected. The existing pulse diagnosis equipment is only provided with a piezoresistive or piezoelectric sensor, only can collect mechanical pressure signals generated by vascular pulsation, but the pressure waveforms can reflect the elasticity of the vascular wall and the heart pumping function, but cannot directly represent the local microcirculation blood perfusion condition and the optical characteristics of blood, and the pressure sensors and the photoelectric sensors are arranged separately by combining the equipment of the photoelectric volume pulse wave technology, so that signals of different modes are not derived from the same anatomical point due to a spatially non-co-located collection mode, and spatial phase deviation exists. The multi-dimensional biophysical information contained in the pulse condition is lost by a single-mode or space separation acquisition mode, so that the diagnosis algorithm is difficult to accurately classify the symptoms based on the comprehensive characteristics, and the clinical application effect of the pulse diagnosis objectification technology is limited. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a portable pulse diagnosis auxiliary device based on characteristic acquisition, which solves the problems that the standard degree of acquired data is low due to the lack of a self-adaptive depth calibration mechanism aiming at individual differences in the existing pulse diagnosis equipment, and the auxiliary diagnosis accuracy is insufficient due to the fact that the pulse condition multidimensional characteristics are difficult to comprehensively capture by relying on a single-mode or space non-co-located acquisition mode. The portable pulse diagnosis auxiliary device based on the characteristic acquisition comprises a main body shell, wrist bands are arranged on two sides of the bottom of the main body shell, fastening pieces are arranged on the surfaces of the wrist bands, a charging interface, an indicator light and a switch are arranged on the outer surface of the main body shell, and a battery is arranged in the main body shell. The three-channel servo array is arranged on one side of the base, the physical positions of the three-channel servo array are respectively corresponding to three pulse position areas of a wrist of a human body, the three-channel servo array comprises three mutually independent servo modules, each servo module comprises a driving motor and a displacement sensor, a motion output end of the driving motor is connected with a sensing head, and a signal output end of the displacement sensor is used for outputting real-time position data