A portable low-temperature shock analgesic control circuit and device with distance measurement function

Abstract

This application provides a portable cryogenic shock analgesia control circuit and device with distance measurement function, relating to the field of cryogenic shock therapy technology and applied to cryogenic shock therapy devices. It includes a main control unit module and a temperature acquisition module, a distance measurement module, and a solenoid valve drive module connected to the main control unit module. The temperature acquisition module is used to acquire skin temperature, the distance measurement module is used to measure the distance between the treatment head of the cryogenic shock therapy device and the skin surface, and the main control unit module is used to generate control signals based on the skin temperature and distance data to control the solenoid valve of the solenoid valve drive module to open or close, or adjust the opening and closing time of the solenoid valve. Thus, through the dual feedback from the temperature acquisition module and the distance measurement module, the main control unit module controls the solenoid valve drive module, achieving closed-loop control of distance-temperature-cooling capacity, solving the problems of traditional cryogenic shock therapy devices relying on manual operation, difficult distance control, and uneven temperature leading to frostbite.

Description

Technical Field

[0001] This application relates to the field of cryogenic shock therapy technology, and in particular to a portable cryogenic shock analgesia control circuit and device with ranging function. Background Technology

[0002] Cryo-shock therapy is a medical device that releases low-temperature energy into human tissue to achieve therapeutic purposes such as pain relief and swelling reduction. Its core principle is to use low-temperature shocks applied to the painful area to inhibit nerve conduction and reduce inflammation, thereby alleviating pain symptoms. However, traditional cryo-shock therapy devices have significant drawbacks: the equipment relies too heavily on manual operation, making it difficult to precisely control the distance between the treatment head and the skin during treatment. This results in uneven temperature distribution in the treatment area and may even cause frostbite due to excessively close proximity. In other words, existing devices lack dynamic distance and energy adjustment mechanisms, making it impossible to maintain stable treatment effects during mobile treatment, seriously affecting the safety and effectiveness of the therapy. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this application provides a portable low-temperature shock analgesia control circuit and device with ranging function, which can achieve precise treatment control through dual feedback of ranging and temperature.

[0004] This application provides a portable low-temperature shock analgesia control circuit with distance measurement function, applied to a low-temperature shock therapy device. The control circuit includes a main control unit module and a temperature acquisition module, a distance measurement module, and a solenoid valve drive module connected to the main control unit module. The temperature acquisition module is used to acquire skin temperature and send the acquired skin temperature to the main control unit module. The distance measurement module is used to measure the distance between the treatment head of the low-temperature shock therapy device and the skin surface and send the acquired distance data to the main control unit module. The main control unit module is used to generate a control signal based on the received skin temperature and distance data, and send the generated control signal to the solenoid valve drive module to control the solenoid valve to open or close, or adjust the opening and closing time of the solenoid valve.

[0005] Specifically, when the distance between the treatment head and the skin surface is less than a set distance threshold and the skin temperature reaches a set temperature threshold, the solenoid valve is disconnected; when the distance between the treatment head and the skin surface is greater than or equal to the set distance threshold and the skin temperature does not reach the set temperature threshold, the proportion of the solenoid valve opening time is increased.

[0006] In one possible implementation, the solenoid valve drive module includes a solenoid valve and a P-channel MOSFET connected to the solenoid valve. One end of the solenoid valve is connected to the drain of the MOSFET, and the other end is grounded. The source of the MOSFET is connected to a DC 12V power supply, and its gate is connected to the DC 12V power supply via resistor R56 (path 56) and to the collector of transistor Q5 (path 55). The emitter of transistor Q5 is grounded via resistor R55 (path 55) and connected to its base via resistor R54 (path 55). The base of transistor Q5 is connected to the control pin of the main control unit module via resistor R54 (path 54).

[0007] In one possible implementation, the MOS transistor is turned on when the control pin of the main control unit module outputs a high level, and the MOS transistor is turned off when the control pin of the main control unit module outputs a low level.

[0008] In one possible implementation, the ranging module includes a ranging sensor, which is connected to the MCU of the main control unit module via an IIC interface.

[0009] In one possible implementation, the temperature acquisition module includes a temperature sensor, which is connected to the MCU of the main control unit module via an IIC interface.

[0010] In one possible implementation, the control circuit further includes a power supply module connected to the main control unit module, for providing operating power to the main control unit module, the temperature acquisition module, and the ranging module.

[0011] In one possible implementation, the power module includes a first voltage regulator chip and a second voltage regulator chip, wherein the first voltage regulator chip is a TPS5430DDAR chip used to step down DC12V to DC5V; and the second voltage regulator chip is an AMS1117-3.3 chip used to step down DC5V to DC3.3V.

[0012] This application provides a portable cryogenic shock analgesia control device with ranging function, which adopts any of the portable cryogenic shock analgesia control circuits with ranging function described above.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] The portable low-temperature shock analgesia control circuit and device with distance measurement function provided in this embodiment achieves closed-loop control of distance-temperature-cooling capacity through dual feedback from the temperature acquisition module and the distance measurement module, and controls the solenoid valve drive module through the main control unit module. This solves the problems of traditional low-temperature shock therapy devices that rely on manual operation, have difficult distance control, and are prone to frostbite due to uneven temperature. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A circuit diagram of the main control unit module according to an embodiment of this application is shown;

[0017] Figure 2 A circuit diagram of a power module according to an embodiment of this application is shown;

[0018] Figure 3 A circuit diagram of a temperature acquisition module according to an embodiment of this application is shown;

[0019] Figure 4 A circuit diagram of a ranging module according to an embodiment of this application is shown;

[0020] Figure 5 A circuit diagram of a solenoid valve drive module according to an embodiment of this application is shown. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] In view of the technical problems raised in the background art, this application provides a portable low-temperature shock analgesia control circuit and device with ranging function, which can achieve precise treatment control through dual feedback of ranging and temperature.

[0027] This application provides a portable cryogenic shock analgesia control circuit with ranging function, mainly used in cryogenic shock therapy devices. The control circuit includes:

[0028] A temperature acquisition module, connected to the main control unit module, is used to acquire the user's skin temperature during cryotherapy and send the acquired skin temperature data to the main control unit module.

[0029] The ranging module, connected to the main control unit module, is used to collect the distance between the treatment head of the low-temperature shock therapy device and the skin surface during the treatment process, and to send the collected distance data to the main control unit module.

[0030] The solenoid valve drive module is connected to the main control unit module and is used to receive control signals sent by the main control unit module, and to adjust the on / off state of the solenoid valve and the cooling capacity according to the control information; wherein, cooling energy is only output when the solenoid valve is turned on, and the cooling energy output is increased as the opening time of the solenoid valve increases per unit time;

[0031] The main control unit module is used to receive skin temperature data sent by the temperature acquisition module and distance data collected by the ranging module, and generate control signals based on the received skin temperature data and distance data, and send them to the solenoid valve drive module.

[0032] The main control unit module generates a control signal based on the received skin temperature data and distance data, including: pre-setting a distance threshold and a temperature threshold; disconnecting the solenoid valve when the distance between the treatment head and the skin surface is less than the set distance threshold and the skin temperature reaches the set temperature threshold; and increasing the proportion of the solenoid valve opening time when the distance between the treatment head and the skin surface is greater than or equal to the set distance threshold and the skin temperature does not reach the set temperature threshold.

[0033] For example, the set distance threshold is 10mm and the temperature threshold is 10℃. Then, when the ranging module measures a distance of less than 10mm between the treatment head of the low-temperature impact therapy device and the skin surface, and when the temperature acquisition module detects a skin temperature of less than 10℃ during treatment, it indicates that the cold energy is concentrated at close range, and continued cooling could easily cause frostbite. Therefore, a control signal to immediately disconnect the solenoid valve is needed to stop the cooling output.

[0034] When the ranging module measures a distance greater than or equal to 10mm between the treatment head of the low-temperature impact therapy device and the skin surface, and when the temperature acquisition module acquires a skin temperature greater than or equal to 10℃ during the treatment process, it indicates that the cooling capacity is attenuated due to the increased distance during transmission, causing the temperature of the treatment area to fail to reach the effective treatment threshold. At this time, the PWM duty cycle of the main control unit module needs to be increased, i.e., the opening time of the solenoid valve is increased, to improve the cooling capacity output, in order to compensate for the energy loss caused by the distance attenuation and ensure the stability of the treatment effect.

[0035] In one embodiment, see the appendix to the specification. Figure 1 The MCU of the main control unit module is model GD32F103V8T6. See also the appendix to the instruction manual. Figure 2 The power module connected to the control circuit and the main control unit module is used to provide working power to the main control unit module, the temperature acquisition module, and the ranging module.

[0036] The power module includes a first voltage regulator chip and a second voltage regulator chip. The first voltage regulator chip, model TPS5430DDAR, is used to step down DC12V to DC5V. The DC12V power supply is connected to the seventh pin (VIN) of the first voltage regulator chip after surge protection and filtering by a unidirectional transient suppression diode D6 and capacitors C11, C12, C13, and C14. The first voltage regulator chip controls its internal MOSFET switch via PWM to chop and filter the high voltage (DC12V) and output a low voltage (DC5V). The internal reference voltage of the first voltage regulator chip is 1.23V. Resistors R18 and R19 serve as feedback resistors, satisfying the relationship 5V = 1.23V × (1 + R18 / R19), resulting in R18 / R19 ≈ 3.065V. In this embodiment, the resistance of the eighteenth resistor R18 is set to 10KΩ, and the resistance of the nineteenth resistor R19 is set to 3.3KΩ. The second voltage regulator chip is model AMS1117-3.3, which is used to step down DC5V to DC3.3V. The DC5V is used as the power supply terminal. After filtering, it is input to the third pin VIN of the second voltage regulator chip. The second voltage regulator chip dynamically adjusts the conduction level of the regulating transistor by detecting the difference between the output voltage and the internal 3.3V reference. The second pin VO forces a stable DC3.3V voltage to be output, thereby powering the main control unit module, temperature acquisition module and ranging module.

[0037] See the instruction manual appendix Figure 3 The temperature acquisition module includes an infrared temperature sensor of model MLX90614. The second pin SDA and the first pin SCL of the temperature sensor are connected to pins 42 (I2C1-SCL) and 43 (I2C1-SCL) of the MCU, respectively. The temperature acquisition module then transmits the collected skin temperature of the user during the cryotherapy process to the main control unit module via I2C communication.

[0038] See the instruction manual appendix Figure 4 The ranging module includes a VL53L3CX laser rangefinder. Pin 5 (XSHUT) and pin 7 (GPIO1) of the rangefinder are connected to pin 46 (XSHUT) and pin 45 (INT) of the MCU, respectively. Pin 9 (SDA) and pin 10 (SCL) of the rangefinder are connected to pin 21 (I2C2-SCL) and pin 22 (I2C2-SCL) of the MCU, respectively. The ranging module then transmits the distance data collected between the treatment head and the skin surface to the main control unit module via I2C communication.

[0039] See the instruction manual appendix Figure 5The solenoid valve drive module includes a solenoid valve and a P-channel MOSFET IRF7416 connected to the solenoid valve. One end of the solenoid valve is connected to the drain of the MOSFET, and the other end is grounded. A Zener diode D11 is also placed between the two ends of the solenoid valve to absorb the reverse electromotive force when the solenoid valve is de-energized. The source of the MOSFET is connected to a DC 12V power supply. Its gate is connected to the DC 12V power supply via resistor R56, and the other gate is connected to the collector of transistor Q5. The emitter of transistor Q5 is grounded via resistor R55, and the other emitter is connected to its base via resistor R55. The base of transistor Q5 is connected to the control pin PA2 of the main control unit module via resistor R54.

[0040] Specifically, when the control pin PA2 of the main control unit module outputs a high level, the fifth transistor Q5 conducts, thereby pulling down the gate voltage of the MOSFET, turning on the MOSFET and energizing the solenoid valve. When the control pin PA2 of the main control unit module outputs a low level, the fifth transistor Q5 de-energizes, thereby pulling up the gate voltage of the MOSFET, turning off the MOSFET and de-energizing the solenoid valve. The main control unit module then dynamically adjusts the cooling capacity by controlling the opening / closing time ratio of the solenoid valve based on the skin temperature data fed back by the temperature acquisition module and the distance data fed back by the ranging module, through the high and low level outputs of the control pin PA2.

[0041] It should be noted that the ranging sensor, its working principle, and the control logic of the MCU are technical means well known to those skilled in the art, and are not key points of this application, so they will not be elaborated here.

[0042] The portable low-temperature shock analgesia control circuit with distance measurement function provided in this application achieves closed-loop control of distance-temperature-cooling capacity through dual feedback from the temperature acquisition module and the distance measurement module, and controls the solenoid valve drive module through the main control unit module. This solves the problems of traditional low-temperature shock therapy devices that rely on manual operation, are difficult to control distance, and are prone to frostbite due to uneven temperature.

[0043] This utility model also provides a portable cryogenic shock analgesia control device with ranging function. It employs the aforementioned portable cryogenic shock analgesia control circuit with ranging function, which has a simple structure and adjustable current output direction and magnitude. Since the principle of the control device in this application embodiment is similar to the control circuit described above in this application embodiment, the implementation of the control device can refer to the implementation of the control circuit; repeated details will not be elaborated further.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A portable low temperature shock analgesic control circuit with distance measurement function, characterized in that, The control circuit, applied to a cryogenic shock therapy device, includes a main control unit module and a temperature acquisition module, a distance measuring module, and a solenoid valve drive module connected to the main control unit module. The temperature acquisition module acquires skin temperature and sends the acquired skin temperature to the main control unit module. The distance measuring module measures the distance between the treatment head of the cryogenic shock therapy device and the skin surface and sends the acquired distance data to the main control unit module. The main control unit module generates a control signal based on the received skin temperature and distance data and sends the generated control signal to the solenoid valve drive module to control the solenoid valve's on / off state or adjust its switching time. Specifically, when the distance between the treatment head and the skin surface is less than a set distance threshold and the skin temperature reaches a set temperature threshold, the solenoid valve is disconnected; when the distance between the treatment head and the skin surface is greater than or equal to the set distance threshold and the skin temperature does not reach the set temperature threshold, the proportion of the solenoid valve opening time is increased.

2. The portable low temperature impingement analgesic control circuit with range finding capability of claim 1, wherein, The solenoid valve drive module includes a solenoid valve and a P-channel MOSFET connected to the solenoid valve. One end of the solenoid valve is connected to the drain of the MOSFET, and the other end is grounded. The source of the MOSFET is connected to a DC 12V power supply. Its gate is connected to the DC 12V power supply via resistor R56, and the other gate is connected to the collector of transistor Q5. The emitter of transistor Q5 is grounded, and the other emitter is connected to its base via resistor R55. The base of transistor Q5 is connected to the control pin of the main control unit module via resistor R54.

3. The portable low temperature impingement analgesic control circuit with range finding capability of claim 2, wherein, in, When the control pin of the main control unit module outputs a high level, the MOS transistor is turned on; when the control pin of the main control unit module outputs a low level, the MOS transistor is turned off.

4. The portable low temperature impingement analgesic control circuit with range finding capability of claim 1, wherein, The ranging module includes a ranging sensor, which is connected to the MCU of the main control unit module via an IIC interface.

5. The portable low-temperature shock analgesia control circuit with ranging function according to claim 1, characterized in that, The temperature acquisition module includes a temperature sensor, which is connected to the MCU of the main control unit module via an IIC interface.

6. The portable low temperature impingement analgesic control circuit with ranging capability of claim 1, wherein, The control circuit also includes a power supply module connected to the main control unit module, which provides operating power to the main control unit module, the temperature acquisition module, and the ranging module.

7. The portable low-temperature shock analgesia control circuit with ranging function according to claim 6, characterized in that, The power module includes a first voltage regulator chip and a second voltage regulator chip. The first voltage regulator chip is a TPS5430DDAR chip, which is used to step down DC12V to DC5V. The second voltage regulator chip is an AMS1117-3.3 chip, which is used to step down DC5V to DC3.3V.

8. A portable low temperature impact analgesic control device with distance measurement function, characterized in that, Includes the portable low-temperature shock analgesia control circuit with ranging function as described in any one of claims 1-7.

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