Pulse diagnosis transmitter and control system thereof

Abstract

The utility model discloses a pulse diagnosis transmitter and a control system thereof. The pulse diagnosis transmitter comprises a base used for placing a wrist of a human body, a support connected with the base, a sliding block arranged on the support, a pressure sensing unit connected with the sliding block and a driving mechanism used for controlling the sliding block to move. The pressure sensing unit comprises a detection head used for detecting the pulse condition of the human body and a pressure sensor used for detecting the pressure of the detection head. The driving mechanism drives the pressure sensing unit to move through the sliding block, force is applied to the detection head, and pressure detection is conducted through the pressure sensor while the force is applied. The utility model further comprises a pulse diagnosis transmitter control system. The pulse condition detection device has the advantages of high stability, high detection speed, convenience in replacement of the pressure sensing unit, high pulse condition detection accuracy and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse detection, in particular to a pulse diagnosis transmitter and a control system thereof. Background Art

[0002] Pulse diagnosis in traditional Chinese medicine is a method of palpation that involves touching the pulse at different parts of the human body to observe changes in the pulse. When taking the pulse, different finger pressures are applied to sense the patient's pulse rhythm, depth, strength, and other comprehensive impressions by different methods of floating, middle, and sinking, so as to obtain important information needed for diagnosis and prescription. However, pulse diagnosis in traditional Chinese medicine is based on the feeling of the fingers to obtain the pulse. Based on the physician's subjective judgment of the pulse and his own experience, the pulse sensed by the fingers is visualized, which is called "pulse image". Pulse image is an important basis for TCM syndrome differentiation, and it has important clinical significance for distinguishing the cause of the disease, inferring the change of the disease, identifying the true or false of the condition, and judging the prognosis of the disease. However, artificially distinguishing the pulse image, that is, artificially extracting the pulse signal, will cause a high error problem.

[0003] On the one hand, most of the existing pulse detection sensors fix the sensor body to the wrist of the human body by means of a bandage or the like. This method has poor stability due to the difficulty in controlling the tightness of the bandage, thereby reducing the detection accuracy of the sensor, and the bandage is slow to tie, which is time-consuming and labor-intensive. On the other hand, the detection head is usually inflated by an inflation method, such as inflating an air bag by an air pump, which is not only time-consuming and labor-intensive, and the operation is cumbersome, but the air pump is noisy, large in size, and has poor comfort. Furthermore, the signals detected by the existing pulse detection sensors are mainly non-standard signals, and transmitters are not used, so it is impossible to make the floating, middle, and sinking pulses correspond to specific basic physical quantities, resulting in reduced pressure accuracy. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a pulse diagnosis transmitter and a control system thereof which have high stability, high speed, convenient replacement and high detection accuracy.

[0005] The technical solution of the utility model is:

[0006] The utility model discloses a pulse diagnosis transmitter, comprising a base for placing a human wrist, a bracket connected to the base, a slider arranged on the bracket, a pressure sensing unit connected to the slider, and a driving mechanism for controlling the movement of the slider; the pressure sensing unit comprises a detection head for detecting human pulse and a pressure sensor for detecting the pressure of the detection head; the driving mechanism drives the pressure sensing unit to move through the slider, applies force to the detection head, and the pressure sensor performs pressure detection while applying force.

[0007] Furthermore, the head of the detection head is made of flexible material, and during the movement of the detection head, the total mass of the gas in the sealed cavity is ensured to remain unchanged. The detection head is concave during the pressurization process to change the volume of the sealed cavity of the detection head, thereby generating different pressures.

[0008] Furthermore, the pressure sensor is a gauge pressure sensor, a thin film force sensitive sensor or a strain type force sensor.

[0009] Further, when the pressure sensor is a gauge pressure sensor, the pressure sensing unit includes a gauge pressure sensor, a detection head and a sensor seat, the detection head is sealed by the sensor seat to form a sealed cavity, the gauge pressure sensor is arranged on the sensor seat, and a small hole is provided on the gauge pressure sensor to connect the back pressure of the gauge pressure sensor with the external atmospheric pressure; when the pressure sensor is a thin film force sensitive sensor, the pressure sensing unit includes a detection head, a sensor cover and a thin film force sensitive sensor; the thin film force sensitive sensor includes a sensor sensitive area, and the sensor sensitive area is connected to the upper surface of the detection head; when the pressure sensor is a strain type force sensor, the pressure sensing unit includes a detection head, a sensor connecting plate and a strain type force sensor, the upper part of the detection head is threadedly connected to the sensor connecting plate, the strain type force sensor is connected between the connecting part of the slider and the sensor connecting plate, and a strain gauge is provided in the middle of the strain type force sensor.

[0010] Furthermore, the slider includes a sliding portion and a connecting portion, the sliding portion is connected to the driving mechanism; the connecting portion is connected to the pressure sensing unit, and the sliding portion and the connecting portion and / or the connecting portion and the pressure sensing unit are detachably connected.

[0011] Furthermore, the driving mechanism includes a motor and a transmission part connected between the motor and the slider; the number of the motors is the same as the number of the pressure sensing units and the slider, and each pressure sensing unit can be independently controlled. The number of the pressure sensing units is one or more.

[0012] Furthermore, the bottom of the bracket is threadedly connected to the base, and the rear side of the bracket is connected to the circuit board through a support. A gap is provided between the bracket and the circuit board, and the gap is used to place the motor. The bracket is provided with openings corresponding to the number of motors, and the transmission part is provided in the opening, and the motor is connected to the slider via the transmission part. A limit block is also provided in the opening to limit the maximum pressure value applied by the motor.

[0013] Furthermore, a concave surface for placing a human wrist is provided on one side of the table top of the base, and the concave surface is located below the pressure sensing unit; a groove is provided on the other side, and the bracket and the driving mechanism are arranged in the groove; the pulse diagnosis transmitter also includes a shell for covering the bracket, the driving mechanism and the circuit board.

[0014] The utility model discloses a pulse diagnosis transmitter control system, comprising a microprocessor and at least one detection channel connected to the microprocessor, wherein the number of the detection channels corresponds to the number of pressure sensing units; the output end of the microprocessor is connected to the motor via a motor driver, and the microprocessor also performs bidirectional communication with a terminal; each of the detection channels comprises a preamplifier and at least two analog-to-digital conversion modules; the input end of the preamplifier is connected to the pressure sensor of the pressure sensing unit, and the output end separates at least two data paths, one path is pressure data, and the other path is pulse wave data, and both data paths are sent to the microprocessor through their respective analog-to-digital conversion modules; the microprocessor is used to calibrate the amplified pressure data and pulse wave data as standard signals, and is also used to drive the motor driver of the channel according to the pressure data to control the motor to apply corresponding pressure to the detection head; and also communicates with the terminal according to the pulse wave data.

[0015] Furthermore, the pulse diagnosis transmitter also includes a pulse strength indicator light for indicating the strength of the pulse beating, and the pulse strength indicator light is connected to the output end of the preamplifier to control the brightness of the pulse strength indicator light after the pulse wave is amplified.

[0016] Beneficial effects of the utility model:

[0017] (1) By setting a concave surface on the base, it is easy to extend the wrist to this place. Relying on the stability of the base, the position of the wrist can be ensured to remain unchanged, thereby improving the accuracy of detection. Moreover, detection can be carried out as long as the wrist is extended to the concave surface, which greatly improves the detection speed;

[0018] (2) By designing the pressure sensing unit and the slider to be detachably connected, and the connection portion and the sliding portion of the slider to be detachably connected, when the detection head of the pressure sensing unit leaks or is damaged, the pressure sensing unit can be replaced in time, or the pressure sensing unit and the connection portion of the slider can be replaced as a whole;

[0019] (3) By sealing the probe head to form a sealed cavity, the total mass of the gas in the sealed cavity can be guaranteed to remain unchanged. By changing the gas volume in the sealed cavity and applying different pressures to the probe head, the floating pulse, middle pulse, sinking pulse and other pulse conditions that a Chinese medicine doctor experiences during pulse diagnosis can be most realistically simulated, thereby automatically distinguishing between the various pulse conditions.

[0020] (4) By setting up multiple detection channels, and each detection channel is provided with a preamplifier and two analog-to-digital conversion modules, two sets of data can be separated and sent to the microprocessor through their respective analog-to-digital conversion modules. The microprocessor drives the motor to apply the corresponding pressure according to the pressure data, and stops the action when the corresponding pressure value is reached; the pulse wave data is also sent to the terminal for pulse wave display. In addition, the different methods of taking floating, middle and sinking pulses of the control system correspond to specific basic physical quantities, and the pulse waveform change data also corresponds to the basic physical quantity, thereby greatly improving the pressure application accuracy;

[0021] (5) By opening a small hole on the back of the gauge pressure sensor, the back pressure of the pressure sensor can be connected to the external atmospheric pressure, so that the measured pressure is the gauge pressure relative to the atmospheric pressure;

[0022] (6) By setting the pulse strength indicator light to display the pulse strength, the pulse strength from weak pulse to strong pulse can be intuitively displayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0024] Figure 2 It is a schematic diagram of the disassembled structure of the shell and other main bodies of Example 1 of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the base of Example 1 of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the pressure sensing unit of Embodiment 1 of the present utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the detection head of Embodiment 1 of the utility model;

[0028] Figure 6 This is a schematic diagram of the connection structure between the pressure sensor and the sensor seat of Example 1 of the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the sensor seat of Embodiment 1 of the utility model;

[0030] Figure 8 This is a schematic diagram of the connection structure between the connection portion of the slider and the pressure sensing unit in Example 1 of the utility model;

[0031] Fig. 9 It is a structural schematic diagram of the sliding part of the slider in Example 1 of the utility model;

[0032] Fig.10 This is a schematic diagram of the connection structure between the driving mechanism and the slider in Example 1 of the utility model;

[0033] Fig.11 This is a schematic diagram of the split structure of the base and the bracket of Example 1 of the utility model;

[0034] Fig.12 This is a schematic diagram of the connection structure of the bracket of Example 1 of the utility model;

[0035] Fig.13 This is a schematic diagram of the connection structure between the pressure sensing unit and the connecting portion of the slider in Embodiment 2 of the present utility model;

[0036] Fig.14 yes Fig.13 A schematic diagram of the split structure of the pressure sensing unit of Example 2 is shown;

[0037] Fig.15 is a schematic diagram of the specific structure of the pressure sensing unit in Example 2 of the utility model;

[0038] Fig.16 This is a schematic diagram of the connection structure between the thin film force sensitive sensor and the detection head in Example 2 of the utility model;

[0039] Fig.17 is a schematic structural diagram of a pressure sensing unit in Embodiment 3 of the present utility model;

[0040] Fig.18 This is a principle block diagram of a control system according to Embodiment 4 of the present utility model;

[0041] Fig.19 It is a principle block diagram of the control system of embodiment 5 of the present utility model.

[0042] Description of the accompanying drawings:

[0043] 1. Shell; 2. Base; 3. Bracket; 4. Slider; 5 / 5′ / 5”. Pressure sensing unit; 6. Driving mechanism; 7. Circuit board; 8. Pillar;

[0044] 21. concave surface; 22. groove; 31. open surface; 32. stopper; 41. sliding part; 42. connecting part; 51 / 51′ / 51”. detection head;

[0045] 52 / 52′. Sensor sleeve; 53. Pressure sensor; 54. Sensor seat; 53′. Thin film force sensor; 52”. Sensor connecting plate; 53”. Strain type force sensor; 54”. Screw; 61. Speed ​​reducer motor; 62. Screw;

[0046] 511. cylindrical portion; 512. head; 531. small hole; 541. hole; 521′. lead hole; 531′. sensor sensitive area; 532′. lead wire; 531″. strain gauge. DETAILED DESCRIPTION

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] like Figure 1 and Figure 2 As shown: a pulse diagnosis transmitter includes a shell 1, a base 2, a bracket 3, three sliders 4 arranged on the bracket 3, a pressure sensing unit 5 connected to the slider 4, a driving mechanism 6 for controlling the movement of the slider and a circuit board 7.

[0050] like Figure 3 As shown: Specifically, one side of the table of the base 2 is provided with a concave surface 21 for placing the human wrist, and the concave surface 21 is located below the pressure sensing unit 5; the other side is connected to the bracket 3. Among them, the base 2 is provided with a connecting seat at the position connected to the bracket 3, and the position corresponding to the connecting seat and the bracket is designed to be a groove structure, so that the bracket is installed in the groove 22, and the driving mechanism 6 and the circuit board 7 are also installed in the groove 22; the other side of the connecting seat forms the concave surface 21, so that the human body can place the wrist here, thereby improving the stability of the detection. The shape of the concave surface 21 is preferably designed to be a concave surface with a relatively gentle curvature.

[0051] like Figure 4~Figure 7 As shown: In this embodiment, each slider 4 is connected to a pressure sensing unit 5, and the pressure sensing unit 5 includes a detection head 51 for detecting human pulse, a sensor sleeve 52, a pressure sensor 53 and a sensor seat 54. Among them, the detection head 51 includes a cylindrical part 511 and a head 512, and the head 512 of the detection head is a flexible material that can be deformed under a predetermined air pressure, wherein the flexible material is specifically a highly elastic material, such as latex, silicone rubber, nitrile rubber, etc. The inner cavity of the detection head 51 is hollow, and the inner cavity of the detection head is sealed by the sensor seat 54, and the pressure sensor 53 is connected to the middle position of the outer surface of the sensor seat 54. When the sensor seat 54 seals the inner cavity of the detection head, a sealed cavity is formed in the detection head. In the process of applying pressure to the detection head, the total mass of the gas in the sealed cavity can be guaranteed to remain unchanged, and different pressures can be applied to the detection head by changing the gas volume in the sealed cavity.

[0052] The outer sleeve of the detection head 51 is provided with a sensor sleeve 52 , the top end of the sensor sleeve 52 is threadedly connected to the slider 4 , and the height of the sensor sleeve 52 is greater than the height of the columnar portion 511 , so that there is a certain distance between the slider 4 and the pressure sensor 53 .

[0053] The sensor seat 54 can be designed to be stepped, that is, the sensor seat 54 includes an upper cylinder and a lower cylinder, and the outer diameter of the lower cylinder is larger than the outer diameter of the upper cylinder, thereby forming the stepped shape. A through hole 541 is provided in the middle of the sensor seat, wherein the hole 541 of the upper cylinder is used to place the sensing part of the pressure sensor 53. The pressure sensor 53 is provided with a small hole 531 in the middle of the side away from the sensor seat, and the small hole 531 connects the back pressure of the pressure sensor with the external atmospheric pressure, so that the measured pressure is a gauge pressure relative to the atmospheric pressure. The sensor seat 54 can be sealed with the cavity of the detection head 51 by a colloid, and the pressure sensor 53 and the upper cylinder of the sensor seat 54 are preferably connected by a colloid.

[0054] The pressure sensor in this embodiment is a gauge pressure sensor, the small hole 531 on the back is connected to the atmosphere, and the pressure sensing part on the front senses the pressure to be detected. According to the different gas pressures sensed, the mV electrical signal output by the Wheatstone bridge of the pressure sensor is also different, in direct proportion. However, the measurement sensitivity is not fixed within a certain range, thus forming a non-standard signal.

[0055] like Figure 8 and Fig. 9 As shown: In this embodiment, the slider 4 includes a sliding portion 41 and a connecting portion 42, wherein the sliding portion 41 is connected to the driving mechanism 6 to drive the pressure sensing unit 5 to move up and down, and the connecting portion 42 is used to connect the pressure sensing unit 5. Specifically, the connecting portion 42 is designed to be L-shaped, and a threaded hole is provided on the vertical section thereof to be bolted to the sliding portion 41, and the horizontal section is threadedly connected to the pressure sensing unit 5, and the pressure sensing unit 5 is vertically arranged with the horizontal section so that the detection head 51 faces the concave surface of the base. The sensor sleeve 52 and the sensor seat 54 of the pressure sensing unit are both provided with threaded holes in corresponding positions, and the horizontal section of the connecting portion 42 is fixedly connected to the pressure sensing unit 5 by bolts passing through the threaded holes. This connection method can facilitate the detachability of the slider and the pressure sensing unit, thereby facilitating the pressure sensing unit. In particular, when the sealed cavity of the detection head leaks, it can be quickly replaced to ensure the detection accuracy. A wiring groove is provided on the horizontal section of the connecting portion 42 to facilitate the wiring of the pressure sensor, and the wiring groove is also provided with a hole at a position corresponding to the small hole 531 of the pressure sensor to facilitate the connection between the back pressure of the pressure sensor and the external atmospheric pressure.

[0056] like Fig.10 and Fig.11 As shown: In this embodiment, the driving mechanism 6 includes a reduction motor 61 and a screw 62; the number of reduction motors 61 is the same as the number of pressure sensing units 5, which is also set to three. The three reduction motors 61 can independently control the three detection heads, most realistically simulating the floating pulse, middle pulse, sinking pulse and other pulse conditions of Chinese medicine doctors when taking pulses, thereby automatically distinguishing each pulse condition.

[0057] In this embodiment, the bottom of the bracket 3 is fixed to the base 2 by threads, and the four corners of the bracket 3 are connected to the circuit board 7 through the pillars 8, that is, the circuit board 7 is arranged on the rear side of the bracket 3 and arranged in the groove 22 of the base. A gap is provided between the bracket 3 and the circuit board 7, and three reduction motors 61 are placed in the gap, thereby ensuring the compactness of the structure and reducing the volume of the entire pulse diagnosis transmitter.

[0058] like Fig.12 As shown: In this embodiment, the bracket 3 is provided with three square openings 31, and three reduction motors correspond to the openings. A screw 62 is vertically connected in each opening 31. The reduction motor 61 is connected to the screw 62 via a reducer. The reduction motor drives the screw to rotate. When the screw 62 rotates, the slider 4 moves up and down along the thread of the screw 62, thereby realizing linear motion. Among them, the sliding part 41 of the slider 4 is designed as an L-shaped structure, and the horizontal section of the sliding part 41 is sleeved on the screw 62, and can move up and down under the drive of the screw 62, and the vertical section of the sliding part 41 is threadedly fixed to the vertical section of the connecting part 42.

[0059] In this embodiment, limit blocks 32 are provided on both sides of the lower inner wall of the opening 31. When the reduction motor 61 drives the slider 4 to move to the limit blocks 32, the slider 4 is limited and stops moving, thereby limiting the maximum pressure value applied.

[0060] In this embodiment, the housing 1 is installed around the groove 22 of the base to cover the bracket 3 , the driving mechanism 6 , and the circuit board 7 .

[0061] It is understandable that the driving mechanism of this embodiment may also be other structures, such as a motor connected to a screw via a worm gear mechanism; or manually controlled. Of course, it is preferred to use an electric method to improve detection accuracy.

[0062] Example 2

[0063] like Figures 13-16 As shown: The difference from Example 1 is that the gauge pressure sensor is replaced by a thin film force sensitive sensor.

[0064] Specifically, the pressure sensing unit 5' includes a detection head 51' for detecting human pulse, a sensor sleeve 52' and a thin film force sensitive sensor 53'; wherein the detection head 51' includes a cylindrical part and a head, the head is the same as in Example 1, and is a flexible material that can produce deformation under a predetermined air pressure, and the cylindrical part is a closed cavity structure, so as to form a sealed cavity in combination with the head. The thin film force sensitive sensor 53' includes a sensor sensitive area 531' and a lead wire 532', the sensor sensitive area 531' is connected to the upper surface of the cylindrical part of the detection head 51', such as by gluing; the lead wire 532' is led out along the sensor sleeve 52', and is routed through the wiring groove on the horizontal section of the slider connection part to connect with the circuit board 7.

[0065] The sensor sleeve 52 ′ is a cylinder, and a lead-out hole 521 ′ for leading out the lead-out wire 532 ′ is formed on the upper surface. The sensor sleeve 52 ′ is threadedly connected to the slider 4 .

[0066] In this embodiment, the thin film force sensor 53' is based on the principle of thin film force sensor. By applying different forces on the thin film force sensor, the resistance of the thin film force sensor will change. The thin film force sensor and the external resistor form a Wheatstone bridge. When a certain voltage is applied to the bridge, the Wheatstone bridge will output an mV signal. The applied force is different, and the output mV electrical signal is also different, which is proportional. However, the measurement sensitivity is not fixed within a certain range, thus forming a non-standard signal.

[0067] Example 3

[0068] like Fig.17 As shown: The difference from Example 1 is that the surface pressure sensor is replaced by a strain type force sensor.

[0069] This embodiment improves the connecting portion of the slider and the pressure sensing unit, specifically: the pressure sensing unit 5" includes a detection head 51" for detecting human pulse, a sensor connecting plate 52" and a strain-type force sensor 53"; wherein the cylindrical portion of the detection head 51" is threadedly connected to the sensor connecting plate 52", for example, the cylindrical portion of the detection head is connected to the sensor connecting plate 52" through a screw rod 54". A strain-type force sensor 53" is provided between the horizontal section of the connecting portion of the slider and the sensor connecting plate 52", and both ends of the strain-type force sensor 53" are respectively threadedly connected to the horizontal section of the connecting portion and the sensor connecting plate 52". A strain gauge 531" is provided in the middle of the strain-type force sensor 53".

[0070] In this embodiment, the working principle of the strain type force sensor 53" is as follows: fix one end of the strain type force sensor and apply a certain force to the other end, so that the Wheatstone bridge of the strain gauge 531" attached to the strain type force sensor can output an mV signal. The applied force is different, and the output mV electrical signal is also different, which is proportional. However, the measurement sensitivity is not fixed within a certain range, thus forming a non-standard signal.

[0071] Example 4

[0072] like Fig.18 As shown: the control system of this embodiment includes various module units arranged on the circuit board 7, specifically including a microprocessor (MCU) and three detection channels connected to the input end of the microprocessor, wherein the output end of the microprocessor is connected to three reduction motors respectively through three motor drivers, and the microprocessor also performs two-way communication with the terminal.

[0073] Specifically, each detection channel includes a preamplifier and two analog-to-digital conversion modules. The input end of the preamplifier is connected to a pressure sensor, and the output end separates two data paths, one of which is the force data detected by the pressure sensor, and the other is the acquired pulse wave data. Both data paths are sent to the microprocessor through their respective analog-to-digital conversion modules. The microprocessor drives the motor driver of the channel according to the acquired force data to control the reduction motor to apply a corresponding force to the detection head; it also sends the acquired pulse wave data to the terminal through the USB interface, and displays the pulse waveform at the terminal. In addition, the terminal can also send a pressurization instruction to the microprocessor, such as sending a pressurization pressure setting value to the microprocessor. After the microprocessor controls the reduction motor to pressurize, it stops pressurizing when the setting value is reached.

[0074] It can be said that this embodiment has three detection channels in total, and a total of six data are separated and sent to the microprocessor through respective analog-to-digital conversion modules to achieve closed-loop pressurization control and display the pulse waveform on the terminal.

[0075] The pressure sensor of this embodiment can be the gauge pressure sensor of embodiment 1, the thin film force sensitive sensor of embodiment 2 or the strain type force sensor of embodiment 3. Among them, the basic physical unit of the gauge pressure sensor is Pa or mmHg, and the basic physical unit of the strain type force sensor and the thin film force sensitive sensor is N or g. The strength of the pulse beat can be expressed in basic physical units by the pressure difference or force difference between the lowest point and the highest point of the output pulse waveform (the physical unit of measurement can be any one of Pa, mmHg, N, g). In this way, the subjective description of the strength of the pulse such as the strong pulse and weak pulse of traditional Chinese medicine can be expressed in objective basic physical quantities. In addition, the time unit of the sensor acquisition is ms, and a stable data acquisition and transmission rhythm must be guaranteed.

[0076] In this embodiment, it is necessary to convert the sensor signal into a transmitter signal, that is, it is necessary to convert the non-standard electrical signal of the sensor into a signal that can be directly used to reflect the accurate physical value. The output signal of the sensor must be amplified and then calibrated into a standard signal. The calibration method of this embodiment is digital calibration. In the suspended state at normal temperature (the sensor is not subjected to any external force), the signal output by the sensor is amplified by a fixed factor of the preamplifier, and then converted by A / D to become a digital signal. The value output in this state is recognized by the system as zero. At normal temperature, a fixed force is applied to the sensor (the pressure sensor applies a pressure value in KPa or mmHg, and the strain-type force sensor and the thin film force-sensitive sensor apply a force value in N or g). The signal output by the sensor is amplified by a fixed factor, and then converted by A / D to become a digital signal. The value output in this state is recognized by the system as the full-scale value.

[0077] This embodiment specifically takes a gauge pressure sensor as an example to illustrate the workflow:

[0078] (1) Reset stage: the reduction motor 61 drives the slider 4 to move to the upper part for reset;

[0079] (2) Entering the floating pulse detection stage: When the human wrist is placed in the concave surface 21 of the base, the three reduction motors 61 drive their respective sliders 4 to move downward respectively. The sliders 4 drive the pressure sensing unit 5 to move downward to align with the pulse position to be detected. The reduction motor 61 drives the slider 4 to move downward. The detection head 51 is attached to the concave part of the artery to produce deformation, which changes the volume of the sealed cavity of the detection head and causes the pressure to change, which is equivalent to the force applied to the artery during Chinese medicine pulse diagnosis. The force applied by the detection head to the artery is subjected to the reaction force when the artery beats. The two forces are superimposed and act on the pressure sensor 53. The three channels amplify the signals output by their respective pressure sensors through the preamplifier circuit, and each channel separates two data channels, one of which is the pressure information applied by the detection head, and the other is the pulse information formed by the pulse beating. The two data channels are sent to the microprocessor through their respective analog-to-digital conversion modules. The microprocessor drives the motor driver of the channel to the pressure corresponding to the floating pulse through the real-time feedback pressure information; and sends the obtained pulse information to the terminal through the USB interface, and the pulse waveform is displayed at the terminal.

[0080] (3) Entering the middle pulse detection stage: When the floating pulse detection is completed, the reduction motor can continue to be controlled to drive the slider to move downward, continue to pressurize the detection head, and the detection head continues to be concave, increasing the detection depth, thereby increasing the pressure applied to the artery, and detecting the pressure information through the pressure sensor 31. The principle is the same as the floating pulse detection stage, and will not be described in detail here. If the middle pulse is not detected, a signal is also output to inform the doctor that the middle pulse signal is not detected.

[0081] (4) Entering the deep pulse detection stage: After the middle pulse detection is completed, continue to control the reduction motor to drive the slider to move downward. At this time, the pressure continues to increase, and the detection head is further concave, thereby increasing the pressure applied to the arterial blood vessel to detect the pressure information through the pressure sensor 31. The principle is the same as the floating pulse detection stage and will not be described in detail here.

[0082] (5) Detection completion stage: After all planned detection items are completed, the reduction motor is controlled to drive the slider to move upward to the reset state, and the initial atmospheric pressure is maintained through the hole connecting the detection head sealing cavity with the sensor seat and the pressure sensor. When the complete data is transmitted to the terminal, it is convenient to analyze the patient's pulse.

[0083] It is understandable that this embodiment can detect only one item or multiple items, such as detecting only the floating pulse, or detecting the floating pulse, middle pulse, and sinking pulse at the same time, so as to perform the detection according to the patient's needs.

[0084] It can be understood that there are no standard corresponding pressure values ​​for floating pulse, middle pulse and deep pulse. In this embodiment, the doctor can define the corresponding specific pressure values ​​according to his own understanding, feeling and experience, and the pressure value is a basic physical quantity. For example, the doctor sets the pressure value corresponding to the floating pulse on the terminal, and the unit is preferably N or kg.

[0085] It can be understood that the control system of this embodiment can standardize the non-standard signal measured by the sensor into a standard signal.

[0086] The signals controlled and output by this pulse diagnosis transmitter all express basic physical quantities, and the units can be any one of Pa, mmHg, N, and g depending on the sensor.

[0087] Example 5

[0088] like Fig.19 As shown: Based on any of the above embodiments, the pulse diagnosis transmitter of this embodiment is also provided with a pulse strength indicator light, which is preferably arranged on the shell 1 and connected to the output end of the preamplifier. The pulse strength indicator light is controlled to light up just after the pulse wave is amplified, and the stronger the pulse beats, the brighter the light becomes as the pulse beats, so that the pulse strength from weak pulse to macro pulse can be intuitively displayed.

[0089] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pulse diagnosis transmitter, characterized in that: It includes a base for placing a human wrist, a bracket connected to the base, a slider arranged on the bracket, a pressure sensing unit connected to the slider, and a driving mechanism for controlling the movement of the slider; the pressure sensing unit includes a detection head for detecting human pulse and a pressure sensor for detecting the pressure of the detection head; the driving mechanism drives the pressure sensing unit to move through the slider, applies force to the detection head, and the pressure sensor performs pressure detection while applying force.

2. The pulse diagnosis transmitter according to claim 1, characterized in that: The head of the detection head is made of flexible material. During the movement of the detection head, the total mass of the gas in the sealed cavity of the detection head is guaranteed to remain unchanged. The detection head is concave during the pressurization process to change the volume of the sealed cavity of the detection head, thereby generating different pressures.

3. The pulse diagnosis transmitter according to claim 1, characterized in that: The pressure sensor is a gauge pressure sensor, a thin film force sensitive sensor or a strain type force sensor.

4. The pulse diagnosis transmitter according to claim 3, characterized in that: When the pressure sensor is a gauge pressure sensor, the pressure sensing unit includes a gauge pressure sensor, a detection head and a sensor seat. The detection head is sealed by the sensor seat to form a sealed cavity. The gauge pressure sensor is arranged on the sensor seat. A small hole is provided on the gauge pressure sensor to connect the back pressure of the gauge pressure sensor with the external atmospheric pressure. When the pressure sensor is a thin film force sensitive sensor, the pressure sensing unit includes a detection head, a sensor cover and a thin film force sensitive sensor. The thin film force sensitive sensor includes a sensor sensitive area, and the sensor sensitive area is connected to the upper surface of the detection head. When the pressure sensor is a strain type force sensor, the pressure sensing unit includes a detection head, a sensor connecting plate and a strain type force sensor. The upper part of the detection head is threadedly connected to the sensor connecting plate, the strain type force sensor is connected between the connecting part of the slider and the sensor connecting plate, and a strain gauge is provided in the middle of the strain type force sensor.

5. The pulse diagnosis transmitter according to claim 1, characterized in that: The slider includes a sliding part and a connecting part, wherein the sliding part is connected to the driving mechanism; the connecting part is connected to the pressure sensing unit, and the sliding part and the connecting part and / or the connecting part and the pressure sensing unit are detachably connected.

6. The pulse diagnosis transmitter according to claim 1, characterized in that: The driving mechanism includes a motor and a transmission part connected between the motor and the slider; the number of the motors is the same as the number of the pressure sensing units and the slider, and each pressure sensing unit can be independently controlled. The number of the pressure sensing units is one or more.

7. The pulse diagnosis transmitter according to claim 6, characterized in that: The bottom of the bracket is threadedly connected to the base, and the rear side of the bracket is connected to the circuit board through a support. A gap is provided between the bracket and the circuit board, and the gap is used to place the motor. The bracket is provided with openings corresponding to the number of motors, and the transmission part is provided in the openings, and the motor is connected to the slider via the transmission part. A limit block is also provided in the opening to limit the maximum pressure value applied by the motor.

8. The pulse diagnosis transmitter according to claim 1, characterized in that: One side of the table top of the base is provided with a concave surface for placing the human wrist, and the concave surface is located below the pressure sensing unit; the other side is provided with a groove, and the bracket and the driving mechanism are arranged in the groove; the pulse diagnosis transmitter also includes a shell for covering the bracket, the driving mechanism and the circuit board.

9. A pulse diagnosis transmitter control system, characterized in that: It includes a microprocessor and at least one detection channel connected to the microprocessor, and the number of the detection channels corresponds to the number of pressure sensing units; the output end of the microprocessor is connected to the motor via a motor driver, and the microprocessor also performs bidirectional communication with a terminal; each of the detection channels includes a preamplifier and at least two analog-to-digital conversion modules; the input end of the preamplifier is connected to the pressure sensor of the pressure sensing unit, and the output end separates at least two data paths, one for pressure data and the other for pulse wave data, and both data paths are sent to the microprocessor through their respective analog-to-digital conversion modules, the microprocessor is used to calibrate the amplified pressure data and pulse wave data as standard signals, and is also used to drive the motor driver of the channel according to the pressure data to control the motor to apply corresponding pressure to the detection head; and it also communicates with the terminal according to the pulse wave data.

10. The pulse diagnosis transmitter control system according to claim 9, characterized in that: The pulse diagnosis transmitter also includes a pulse intensity indicator light for indicating the pulse beating intensity. The pulse intensity indicator light is connected to the output end of the preamplifier and controls the brightness of the pulse intensity indicator light after the pulse wave is amplified.

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