Remote pulse condition reproduction method and device based on voice coil motor

Abstract

The invention belongs to the technical field of pulse condition reproduction, and discloses a remote pulse condition reproduction method and device based on a voice coil motor, the remote pulse condition reproduction device comprises a power supply module, a communication module, a single chip microcomputer module, a driving module and the voice coil motor, and the remote pulse condition reproduction method comprises the specific steps that 1, power supply and conversion are conducted through a power supply; step 2, equipment self-inspection and registration communication; 3, pulse condition data transmission; 4, verifying the pulse condition data; and 5, analyzing and reproducing the pulse condition data. According to the device, the digital-to-analog conversion technology and the voice coil motor driving technology are applied, the TLV5614 12-digit digital-to-analog converter conducts high-precision conversion on pulse condition data, multi-channel synchronous output is further achieved through an LDACN pin of the TLV5614 12-digit digital-to-analog converter, and compared with a traditional pulse condition reproduction device, the device can reproduce three sets of pulse condition data of Cun, Guan and Chi at the same time, and the device is high in practicability. It is ensured that the reproduction effect is consistent with the physician on-site pulse feeling, and the accuracy and real-time performance of remote pulse feeling are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pulse reproduction, and specifically relates to a remote pulse reproduction method and device based on a voice coil motor. Background Art

[0002] Traditional Chinese medicine is a unique medical system that has evolved over thousands of years. It emphasizes philosophical concepts such as the balance of yin and yang and the generation and restriction of the five elements. Diseases are diagnosed through the combined methods of observation, auscultation and olfaction, interrogation, and palpation of the pulse. Various treatment means such as traditional Chinese medicine, acupuncture, massage, and cupping are used to regulate the body's functions, promote the self-healing ability, and restore health.

[0003] Pulse diagnosis in traditional Chinese medicine is an important part of traditional Chinese medical diagnosis. The doctor judges the health status of the human body by palpating the pulse. However, due to the dependence of pulse diagnosis on the doctor's subjective experience and the perception of subtle pulsations, there have always been technical difficulties in remote pulse diagnosis. With the development of modern information technology and sensor technology, how to accurately and real-time transmit and reproduce the collected pulse data has become an urgent problem to be solved.

[0004] At present, some have used sensors to collect pulse data and then achieved remote pulse taking through network transmission. However, in the link of pulse reproduction, it is difficult to accurately restore the strength, rhythm, and subtle changes of the pulse, resulting in a large difference between the remote pulse diagnosis effect and the on-site pulse diagnosis. This is because the conversion accuracy between digital signals and analog pulsations is insufficient, and the existing devices are easily interfered by noise during the data transmission process, unable to achieve high-precision pulse reproduction. Therefore, it needs to be improved and optimized. Summary of the Invention

[0005] The purpose of the present invention is to provide a remote pulse reproduction method and device based on a voice coil motor to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A remote pulse reproduction method and device based on a voice coil motor. The remote pulse reproduction device includes a power supply module, a communication module, a single-chip microcomputer module, a driving module, and a voice coil motor. The specific steps of its remote pulse reproduction method are as follows:

[0007] Step 1, power supply and conversion. The input of the power supply module is the commercial power, which is converted into the DC voltage required for the operation of the pulse reproduction device through a power adapter and a DC-DC module.

[0008] Step 2, device self-check and registration communication. After the device is powered on, the single-chip microcomputer module performs a system self-check. After the self-check is completed, the communication module is used to send the device serial number to the upper computer to complete device registration.

[0009] Step 3: Pulse data transmission. The host computer sends the pulse data to be reproduced to the registered device, and the single-chip microcomputer module exchanges data with the host computer through the communication module.

[0010] Step 4: Pulse data verification. The single-chip microcomputer module uses the DMA method to receive data, verifies the received pulse data according to the protocol, and compares it with the checksum field in the sent data frame. If the verified data is consistent, the single-chip microcomputer sends a correct reception response message to the host computer; otherwise, it sends a data feedback error message to the host computer.

[0011] Step 5: Pulse data parsing and reproduction. The single-chip microcomputer module parses the correctly received pulse data, uses the indicator light to indicate the intensity type of the pulse data, sends the pulse data to the digital-to-analog converter to convert it into an analog signal, and inputs it to the constant current source circuit to control the vibration of the voice coil motor, realizing the reproduction of the pulse data at Cun, Guan, and Chi positions.

[0012] Preferably, in Step 1, the 220V mains power input by the power module is converted into 24V by a power adapter, and finally the voltage is adjusted to 5V by a DC-DC module.

[0013] Preferably, the specific process of Step 2 is as follows:

[0014] A1. After the device is powered on, the single-chip microcomputer module first performs a self-check to determine whether the communication module is connected to the network.

[0015] A2. Under the network connection condition, the 16-bit serial number of the pulse reproduction device is sent to the host computer according to the communication protocol using the Bluetooth communication module and the WI FI communication module.

[0016] A3. After receiving the data, the host computer performs CRC-8 verification. After the verification is correct, the host computer responds with a device registration success message and the single-chip microcomputer sets the device registration success flag.

[0017] A4. If the registration is not successful, the host computer feeds back an error message, indicating that the registration fails.

[0018] Preferably, the specific process of Step 4 is as follows:

[0019] B1. The single-chip microcomputer module uses the DMA method to receive the data sent by the host computer and caches it in the single-chip microcomputer memory.

[0020] B2. The single-chip microcomputer performs CRC-8 verification on the received data according to the data communication protocol.

[0021] B3. By comparing with the CRC checksum in the sent data, when the checksum is consistent, it indicates that the sent data is received correctly, and the single-chip microcomputer sends a correct reception response message to the host computer.

[0022] B4. If the checksum is inconsistent, an error message is fed back.

[0023] Preferably, in the fifth step, the pulse condition data includes three groups of data of cun, guan, and chi, and its specific process is as follows:

[0024] C1. After the single-chip microcomputer receives the correct pulse condition data, it first analyzes the intensity type of the pulse condition data according to the communication protocol and uses the LED indicator to indicate the intensity type of the pulse condition data;

[0025] C2. Then the single-chip microcomputer sequentially sends the three groups of pulse condition data to be reproduced to the digital-to-analog converter TLV5614 through the SPI interface;

[0026] C3. Secondly, the single-chip microcomputer controls the LDAC_N pin of the TLV5614 to perform digital-to-analog conversion on the pulse condition data and outputs analog signals through 3 channels simultaneously;

[0027] C4. Finally, the analog signals are respectively transmitted to the constant current source circuit composed of 3 operational amplifiers and triodes, and further control the vibration of 3 voice coil motors to realize the simultaneous reproduction of the pulse condition data of cun, guan, and chi.

[0028] Preferably, the TLV5614 is a 12-bit digital-to-analog converter, with a total of 4 analog signal output channels. The digital quantity to be converted can be sent to the TLV5614 through the SPI interface, and the LDAC_N pin of the TLV5614 can be used to realize the simultaneous output of analog quantities.

[0029] Preferably, in C4, the currents of the three groups of constant current source circuits are respectively: And in order to prevent the back electromotive force generated when the voice coil motor stops vibrating from impacting the drive circuit, a freewheeling diode is set at both ends of the voice coil motor for protection.

[0030] Preferably, one end of the digital-to-analog converter TLV5614 is connected with a low-pass filter with a cut-off frequency of 500 Hz, and the low-pass filter is composed of C1 and R1, where C1 is 100 nF and R1 is 3 kΩ. The cut-off frequency of the low-pass filter is

[0031] Preferably, the top of the remote pulse condition reproduction device is provided with a handrest, a charging port, and a through hole. The front side of the remote pulse condition reproduction device is provided with a pulse conduction column and an indicator light. The bottom of the remote pulse condition reproduction device is provided with a self-adhesive anti-slip pad.

[0032] The beneficial effects of the present invention are as follows:

[0033] 1. The present invention utilizes digital-to-analog conversion technology and voice coil motor drive technology to enable the TLV5614 12-bit digital-to-analog converter to perform high-precision conversion on pulse condition data. Further, by using its LDAC_N pin, multi-channel synchronous output is achieved. Compared with traditional pulse condition reproduction devices, this device can reproduce the pulse condition data of the cun, guan, and chi groups simultaneously, ensuring that the reproduction effect is consistent with the doctor's on-site pulse diagnosis, and greatly improving the accuracy and real-time performance of remote pulse diagnosis.

[0034] 2. The present invention receives data through the DMA method and combines it with the CRC-8 verification mechanism, effectively ensuring the integrity and correctness of the pulse condition data sent by the host computer. By setting multiple groups of verification processes, it ensures that each data exchange is carried out under strict verification, greatly reducing the error risk during data transmission and providing stable and reliable data support for remote diagnosis.

[0035] 3. The present invention adopts a constant current source circuit composed of an LM358 operational amplifier and a 2SD1047 power triode, effectively improving the driving effect of the voice coil motor. At the same time, a low-pass filter and a freewheeling diode are added to the circuit, which not only reduces the influence of signal noise on pulse condition reproduction but also protects the drive circuit from voltage impacts such as back electromotive force, ensuring the long-term stable and safe operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the module of the remote pulse condition reproduction device of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the communication module of the present invention;

[0038] Figure 3 It is a flow chart of device self-check and registration communication of the present invention;

[0039] Figure 4 It is a flow chart of pulse condition data transmission and verification of the present invention;

[0040] Figure 5 It is a flow chart of pulse condition data parsing and reproduction of the present invention;

[0041] Figure 6 It is a circuit diagram of the constant current source of the present invention;

[0042] Figure 7 It is a top view of the remote pulse condition reproduction device of the present invention;

[0043] Figure 8 It is a front view of the remote pulse condition reproduction device of the present invention;

[0044] Figure 9 It is a bottom view of the remote pulse condition reproduction device of the present invention.

[0045] In the figure: 1. Hand support; 2. Charging port; 3. Transparent hole; 4. Pulse conduction column; 5. Indicator light; 6. Self-adhesive anti-slip pad. Detailed implementation manner

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figures 1 to 9 shown, the embodiment of the present invention provides a remote pulse reproduction method and device based on a voice coil motor. The remote pulse reproduction device includes a power supply module, a communication module, a single-chip microcomputer module, a driving module, and a voice coil motor. And the specific steps of its remote pulse reproduction method are as follows:

[0048] Step 1, power supply and conversion. The input of the power supply module is commercial power, which is converted into the DC voltage required for the operation of the pulse reproduction device through a power adapter and a DC-DC module.

[0049] Step 2, device self-check and registration communication. After the device is powered on, the single-chip microcomputer module performs a system self-check. After the self-check is completed, the communication module is used to send the device serial number to the upper computer to complete device registration.

[0050] Step 3, pulse data transmission. The upper computer sends the pulse data to be reproduced to the registered device, and the single-chip microcomputer module exchanges data with the upper computer through the communication module.

[0051] Step 4, pulse data verification. The single-chip microcomputer module uses the DMA method to receive data, verifies the received pulse data according to the protocol, and compares it with the checksum field in the sent data frame. If the verified data is consistent, the single-chip microcomputer sends a correct reception response message to the upper computer, otherwise it responds with an error message for the data feedback to the upper computer.

[0052] Step 5, pulse data parsing and reproduction. The single-chip microcomputer module parses the correctly received pulse data, uses the indicator light to indicate the intensity type of the pulse data, sends the pulse data to the digital-to-analog converter to convert it into an analog signal, and inputs it to the constant current source circuit to control the vibration of the voice coil motor to realize the reproduction of the pulse data at the cun, guan, and chi positions.

[0053] The power supply module provides DC voltage for the entire device. The single-chip microcomputer module exchanges data with the host computer through the communication module. After the device is powered on, the single-chip microcomputer module completes self-checking and then uses the communication module to send the device serial number to the host computer to complete device registration. The host computer sends the pulse data to be reproduced to the registered device. Then the single-chip microcomputer module analyzes the pulse data, indicates the intensity type of the pulse data through the indicator light, and finally uses the digital-to-analog converter to convert the pulse data sent by the host computer into an analog signal. The analog signal is input into the constant current source drive circuit to control the vibration of the voice coil motor, realizing the reproduction of the pulse data of Cun, Guan, and Chi.

[0054] Using digital-to-analog conversion technology and voice coil motor drive technology, the 12-bit digital-to-analog converter TLV5614 performs high-precision conversion on the pulse data. Further, its LDAC_N pin is used to achieve multi-channel synchronous output. Compared with traditional pulse reproduction devices, this device can reproduce the pulse data of Cun, Guan, and Chi groups simultaneously, ensuring that the reproduction effect is consistent with the doctor's on-site pulse diagnosis, and greatly improving the accuracy and real-time performance of remote pulse diagnosis.

[0055] Among them, in step one, the 220V mains input by the power supply module is converted into 24V by the power adapter, and finally the voltage is adjusted to 5V through the DC-DC module.

[0056] 5V DC is the standard operating voltage for many embedded systems and low-power electronic devices. Through this conversion step, it can better match the working requirements of each module and ensure that they operate in the best state.

[0057] Among them, the specific process of step two is as follows:

[0058] A1, After the device is powered on, the single-chip microcomputer module first performs self-checking to determine whether the communication module is connected to the network;

[0059] A2, Under the network connection condition, the 16-bit serial number of the pulse reproduction device is sent to the host computer according to the communication protocol using the Bluetooth communication module and the WI-FI communication module;

[0060] A3, After the host computer receives the data, it performs CRC-8 check. After the check is correct, the host computer responds with a device registration success message and the single-chip microcomputer sets the device registration success flag;

[0061] A4, If the registration is not successful, the host computer feeds back an error message, indicating that the registration fails.

[0062] First, power-on self-test is performed to ensure that the device has stable communication conditions before starting data interaction, thereby reducing subsequent data loss caused by network problems. Secondly, CRC-8 is used to verify data integrity to ensure the security of data transmission in the entire system. At the same time, through the registration process, the host computer can accurately identify the unique identity (16-bit serial number) of each device, which is conducive to the smooth progress of subsequent data processing and pulse condition reproduction work.

[0063] Among them, the specific process of step four is as follows:

[0064] B1, the single-chip microcomputer module uses the DMA method to receive the data sent by the host computer and cache it in the single-chip microcomputer memory;

[0065] B2, the single-chip microcomputer performs CRC-8 verification on the received data according to the data communication protocol;

[0066] B3, by comparing with the CRC checksum in the sent data, when the checksum is consistent, it means that the sent data is received correctly, and then the single-chip microcomputer sends a correct response message to the host computer;

[0067] B4, if the checksum is inconsistent, an error message is feedback.

[0068] CRC check and Cyclic Redundancy Check are the most commonly used error-checking codes in the field of data communication. Its characteristic is that the lengths of the information field and the check field can be arbitrarily selected. When the host computer sends data, the CRC checksum is calculated according to the established communication protocol. After the single-chip microcomputer receives the data, it first performs CRC verification. Both the host computer and the lower computer use the CRC-8 verification method, and the polynomial formula is x 8 +x 2 +x + 1;

[0069] Using the CRC-8 verification mechanism can effectively detect and prevent errors or damages in the data during transmission.

[0070] Receiving data through the DMA method and combining with the CRC-8 verification mechanism effectively ensures the integrity and correctness of the pulse condition data sent by the host computer. By setting multiple groups of verification processes, it ensures that each group of data exchanges is carried out under strict verification, greatly reducing the error risk during data transmission and providing stable and reliable data support for remote diagnosis.

[0071] Among them, in step five, the pulse condition data includes three groups of data: cun, guan, and chi. The specific process is as follows:

[0072] C1, after the single-chip microcomputer receives the correct pulse condition data, it first analyzes the intensity type of the pulse condition data according to the communication protocol and uses the LED indicator to indicate the intensity type of the pulse condition data;

[0073] C2. Then, the single-chip microcomputer uses the SPI interface to sequentially send three groups of pulse condition data to be reproduced to the digital-to-analog converter TLV5614;

[0074] C3. Secondly, the single-chip microcomputer controls the LDAC_N pin of the TLV5614 to perform digital-to-analog conversion on the pulse condition data and simultaneously outputs analog signals through three channels (OutA, OutB, OutC);

[0075] C4. Finally, the analog signals are respectively transmitted to a constant current source circuit composed of three operational amplifiers LM358 and transistors 2SD1047, and further control the vibration of three voice coil motors to simultaneously reproduce the pulse condition data of cun, guan, and chi.

[0076] This step mainly converts digital pulse condition data into analog pulsating signals that can be perceived during remote pulse diagnosis by traditional Chinese medicine, improving the practicality of remote pulse diagnosis technology.

[0077] Among them, the TLV5614 is a 12-bit digital-to-analog converter with a total of four analog signal output channels. The digital quantity to be converted can be sent to the TLV5614 through the SPI interface, and the use of the LDAC_N pin of the TLV5614 can achieve simultaneous output of analog quantities.

[0078] Among them, in C4, the currents of the three groups of constant current source circuits are respectively: And to prevent the back electromotive force generated when the voice coil motor stops vibrating from impacting the drive circuit, a freewheeling diode (1N4005) is set at both ends of the voice coil motor for protection.

[0079] Among them, one end of the digital-to-analog converter TLV5614 is connected to a low-pass filter with a cut-off frequency of 500 Hz, and this low-pass filter is composed of C1 and R1, where C1 is 100 nF and R1 is 3 kΩ, and the cut-off frequency of the low-pass filter is

[0080] Adopting a constant current source circuit composed of an LM358 operational amplifier and a 2SD1047 power transistor effectively improves the driving effect of the voice coil motor. At the same time, a low-pass filter and a freewheeling diode are added to the circuit, which not only reduces the influence of signal noise on pulse reproduction but also protects the drive circuit from voltage impacts such as back electromotive force, ensuring the long-term stable and safe operation of the device.

[0081] Among them, a handrest 1, a charging port 2, and a through hole 3 are provided at the top of the remote pulse reproduction device, a pulse conduction column 4 and an indicator light 5 are provided on the front side of the remote pulse reproduction device, and a self-adhesive non-slip pad 6 is provided at the bottom of the remote pulse reproduction device.

[0082] The handrest 1 is used to provide hand or wrist support, improving operation stability and comfort. The through-hole 3 is used for heat dissipation and signal transmission. The pulse conduction column 4 is used to reproduce the rhythm of the pulse beat. The indicator light 5 is used to display the battery level and the progress of pulse reproduction. The self-adhesive anti-slip pad 6 is used to enhance the device stability, protect the surface, reduce vibration noise and improve the use safety.

[0083] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0084] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote pulse reproduction method and device based on a voice coil motor, characterized in that: The remote pulse reproduction device comprises a power module, a communication module, a single chip microcomputer module, a drive module and a voice coil motor, and the specific steps of the remote pulse reproduction method are as follows: Step 1: power supply and conversion. The input of the power module is the mains electricity, which is converted into the DC voltage required for the pulse reproduction device to work through the power adapter and the DC-DC module; Step 2: Device self-check and registration communication. After the device is powered on, the MCU module performs a system self-check. After the self-check is completed, the communication module is used to send the device serial number to the host computer to complete the device registration. Step 3: Pulse data transmission: the host computer sends the pulse data to be reproduced to the registration device, and the single-chip microcomputer module exchanges data with the host computer through the communication module; Step 4, pulse data verification, the single-chip microcomputer module uses DMA mode to receive data, verifies the pulse data received according to the protocol, by comparing with the checksum field in the data frame sent down, the verification data is consistent, then the single-chip microcomputer sends the correct response information received to the host computer, otherwise it feeds back error information to the host computer response data; Step five, pulse data analysis and reproduction, the single-chip microcomputer module analyzes the received correct pulse data, uses the indicator light to indicate the strength type of the pulse data, sends the pulse data to the digital-to-analog converter to convert it into an analog signal, and inputs it into the constant current source circuit to control the vibration of the voice coil motor to achieve the reproduction of the Cun, Guan, and Chi pulse data.

2. A remote pulse reproduction method and device based on a voice coil motor according to claim 1, characterized in that: In the step 1, the 220V mains power input by the power module is converted into 24V through the power adapter, and finally the voltage is adjusted to 5V through the DC-DC module.

3. A remote pulse reproduction method and device based on a voice coil motor according to claim 1, characterized in that: The specific process of step 2 is as follows: A1, after the device is powered on, the MCU module first performs a self-check to determine whether the communication module is connected to the network; A2, under networking conditions, sends the 16-bit serial number of the pulse reproduction device to the host computer using the Bluetooth communication module and the WIFI communication module according to the communication protocol; A3, after receiving the data, the host computer performs CRC-8 check. If the check is correct, the host computer responds with a successful device registration message and the single-chip computer sets a successful device registration flag; A4, if the registration is not successful, the host computer will feedback an error message, indicating that the registration failed.

4. A remote pulse reproduction method and device based on a voice coil motor according to claim 1, characterized in that: The specific process of step 4 is as follows: B1, the MCU module uses DMA to receive data sent by the host computer and caches it in the MCU memory; B2, the single chip microcomputer performs CRC-8 check on the received data according to the data communication protocol; B3, by comparing with the CRC checksum in the sent data, if the checksum is consistent, it means that the sent data is received correctly, then the MCU sends a response message that the data is received correctly to the upper computer; B4, if the checksum is inconsistent, an error message will be fed back.

5. A remote pulse reproduction method and device based on a voice coil motor according to claim 1, characterized in that: In the step 5, the pulse data includes three groups of data of Cun, Guan and Chi, and the specific process is as follows: C1, after the single chip microcomputer receives the correct pulse data, it first parses the strength type of the pulse data according to the communication protocol and uses the LED indicator to indicate the strength type of the pulse data; C2, then the single chip uses the SPI interface to send the three sets of pulse data that need to be reproduced to the digital-to-analog converter TLV5614 in turn; C3, Secondly, the single chip microcomputer controls the LDAC_N pin of TLV5614 to convert the pulse data into digital-to-analog form, and outputs analog signals through three channels simultaneously; C4, and finally the analog signals are transmitted to the constant current source circuit composed of 3 operational amplifiers and triodes, which further control the vibration of 3 voice coil motors to achieve the simultaneous reproduction of Cun, Guan and Chi pulse data.

6. A remote pulse reproduction method and device based on a voice coil motor according to claim 5, characterized in that: The TLV5614 is a 12-bit digital-to-analog converter with a total of 4 analog signal output channels. The digital quantity to be converted can be sent to the TLV5614 through the SPI interface, and the LDAC_N pin of the TLV5614 can be used to achieve simultaneous output of analog quantities.

7. A remote pulse reproduction method and device based on a voice coil motor according to claim 5, characterized in that: In C4, the currents of the three groups of constant current source circuits are respectively: In order to prevent the back electromotive force generated when the voice coil motor stops vibrating from impacting the drive circuit, freewheeling diodes are set at both ends of the voice coil motor for protection.

8. A remote pulse reproduction method and device based on a voice coil motor according to claim 6, characterized in that: One end of the digital-to-analog converter TLV5614 is connected to a low-pass filter with a cutoff of 500Hz, and the low-pass filter is composed of C1 and R1, where C1 is 100nF and R1 is 3K ohms. The cutoff frequency of the low-pass filter is 9. A remote pulse reproduction method and device based on a voice coil motor according to claim 1, characterized in that: The top of the remote pulse reproduction device is provided with a hand rest (1), a charging port (2) and a through hole (3); the front side of the remote pulse reproduction device is provided with a pulse conduction column (4) and an indicator light (5); and the bottom of the remote pulse reproduction device is provided with a self-adhesive anti-skid pad (6).

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