Ice sensation stimulating device and control method thereof

Abstract

The application provides an ice feeling stimulation device and a control method thereof, and relates to the technical field of medical devices. In the process of low-temperature stimulation on the oral cavity and throat of a person with swallowing disorder, the ice feeling stimulation device realizes real-time dynamic adjustment of temperature through a built-in semiconductor refrigerator and a temperature sensor, greatly improves the temperature control precision, and is conducive to reducing the size of a water tank with the improvement of the temperature control precision. The ice feeling stimulation device can meet the heat dissipation demand without a fan, has excellent mute effect, and has good use experience.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ice-sensing stimulation device and its control method. Background Technology

[0002] Dysphagia refers to difficulty swallowing caused by various factors and occurring in different parts of the throat. Dysphagia affects food intake and nutrient absorption, and can also lead to aspiration pneumonia, which can be life-threatening in severe cases. There are various rehabilitation treatment methods for patients with dysphagia, among which precise low-temperature stimulation of the oral and pharyngeal mucosa is a targeted treatment approach.

[0003] The process of cryogenic stimulation mainly relies on related cooling equipment to provide icy contact to the target areas of the oral cavity and throat, thereby stimulating them to swallow. Existing cryogenic stimulation equipment cannot achieve real-time temperature control, making it difficult to accurately control the temperature within the ideal treatment range and maintain a stable low temperature. Furthermore, the icy temperature can change rapidly with the ambient temperature and the duration of use, which may lead to excessively high or low stimulation temperatures, affecting the treatment effect and even causing frostbite to the mucous membranes.

[0004] In addition, existing cryogenic stimulation devices rely on fans for heat dissipation, which are noisy and unsuitable for medical environments. Furthermore, some cryogenic stimulation devices have large built-in water cooling units, resulting in a poor overall user experience. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an ice-sensing stimulation device and its control method. During the process of applying low-temperature stimulation to the oral and pharyngeal areas of a person with swallowing disorders, the ice-sensing stimulation device achieves real-time dynamic temperature adjustment through a built-in semiconductor cooler and temperature sensor, which greatly improves the temperature control accuracy. With the improvement of temperature control accuracy, it is beneficial to reduce the size of the water tank and meet the heat dissipation requirements without a fan, with excellent quietness and a better user experience.

[0006] In a first aspect, embodiments of the present invention provide a cold-sensing stimulation device for applying low-temperature stimulation to the oral and pharyngeal regions of individuals with swallowing disorders. The cold-sensing stimulation device includes: a stimulation end, a control unit, and a water tank; the control port of the stimulation end is connected to the control unit via a wire, and the water port of the stimulation end is connected to the water tank via a water pipe.

[0007] The stimulation end includes: a thermoelectric cooler, a contact layer, a temperature sensor, and a heat dissipation substrate; one end of the contact layer contacts the oral cavity and pharynx of the person with swallowing difficulties; the other end of the contact layer is connected to the cold end of the thermoelectric cooler, and the hot end of the thermoelectric cooler is connected to the heat dissipation substrate; the cold end is used to transfer the icy temperature generated by the thermoelectric cooler to the contact layer, and the hot end is used to transfer the heat generated by the thermoelectric cooler to the heat dissipation substrate; a water channel port is located in the heat dissipation substrate; cooling water in the water tank contacts the heat dissipation substrate through a water pipe and the water channel port; the cooling water is used to transfer heat from the heat dissipation substrate to the water tank;

[0008] A temperature sensor is installed in the contact layer to obtain the temperature value of the contact layer in real time; the first control port of the control unit is connected to the control terminal of the semiconductor cooler, and the second control port of the control unit is connected to the temperature transmission terminal of the temperature sensor.

[0009] The control unit is used to acquire the temperature value collected in real time by the temperature sensor through the second control port, and to dynamically generate the corresponding cooling command for the semiconductor cooler using the temperature value in real time;

[0010] The control unit is also used to transmit cooling commands to the semiconductor cooler through the first control port, and use the cooling commands to control the cold end of the semiconductor cooler to reach the ice-feeling temperature in real time; wherein the ice-feeling temperature is lower than the body temperature of the oral cavity and throat of the person with swallowing disorders.

[0011] Optionally, the stimulation end has a sheet-like structure, including two semiconductor coolers, two contact layers, and two temperature sensors; wherein the two semiconductor coolers, two contact layers, and two temperature sensors are all symmetrically distributed along the heat dissipation substrate.

[0012] Optionally, the stimulation end is a cylindrical structure; wherein the stimulation end includes six semiconductor coolers, the contact layer is located on the surface of the cylindrical structure, the semiconductor coolers are disposed inside the cylinder and arranged in a hexagonal pattern; the semiconductor coolers are in contact with the heat dissipation substrate through a thermally conductive adhesive layer.

[0013] Optionally, the control unit includes a PID control module; wherein the output of the PID control module is connected to the control terminal of the semiconductor cooler as the first control port of the control unit.

[0014] The input terminal of the PID control module is connected to the temperature transmission terminal of the temperature sensor as the second control port of the control unit.

[0015] The PID control module is used to perform PID calculations based on the temperature value input at the input terminal and generate a real-time cooling command, which is then sent to the control terminal of the semiconductor cooler through the output terminal.

[0016] Optionally, the ice-sensing stimulation device also includes a leak detection module; the leak detection module is used to monitor for leaks in the water pipe between the water tank and the stimulation end.

[0017] The leakage detection module includes a conductivity sensor and a flow meter. The conductivity transmission port of the conductivity sensor is connected to the third control port of the control unit, and the flow transmission port of the flow meter is connected to the fourth control port of the control unit.

[0018] The conductivity sensor is used to collect the conductivity of the cooling water in the water pipe in real time, and transmit the conductivity to the control unit through the third control port for leakage monitoring;

[0019] The flow meter is used to collect the flow rate of cooling water in the water pipe in real time, and transmit the flow rate value to the control unit through the fourth control port for leakage monitoring.

[0020] Optionally, the ice-sensing stimulation device also includes an audible and visual alarm module; the alarm command transmission port of the audible and visual alarm module is connected to the fifth control port of the control unit.

[0021] The audible and visual alarm module is used to provide audible and visual alarms to people with swallowing disorders based on the audible and visual alarm commands transmitted in the fifth control port; wherein, the audible and visual alarm commands are obtained by the control unit by comparing the temperature value, conductivity and flow rate value with the preset threshold.

[0022] Optionally, the water pipe includes an inlet pipe and an outlet pipe; the cooling water in the inlet pipe flows from the water tank into the heat dissipation base plate, and the cooling water in the outlet pipe flows from the heat dissipation base plate into the water tank.

[0023] The heat dissipation substrate is made of aluminum alloy;

[0024] The heat dissipation substrate is provided with a spiral fluid channel, and the inlet and outlet of the spiral fluid channel are connected to the water inlet pipe and the water outlet pipe, respectively, as water ports.

[0025] Optionally, the ice-sensing stimulation device also includes a water pump; wherein the water pump is installed in the water inlet pipe; the flow rate control port of the water pump is connected to the sixth control port of the control unit;

[0026] The water pump operates according to the speed corresponding to the flow rate control command transmitted in the sixth control port.

[0027] In a second aspect, the present invention provides a control method for an ice-sensing stimulation device, the method being applied to the ice-sensing stimulation device mentioned in the first aspect; the ice-sensing stimulation device includes at least: a stimulation end, a control unit and a water tank, and the stimulation end includes at least a semiconductor cooler, a contact layer, a temperature sensor and a heat dissipation substrate;

[0028] The method includes:

[0029] Once the stimulation tip is detected to be placed in the oral cavity and pharynx of the person with swallowing difficulties and the water tank is detected to be connected to the stimulation tip, the control unit controls the temperature sensor to collect the temperature value of the contact layer in real time.

[0030] The target power of the thermoelectric cooler is determined based on the real-time temperature data, and the PID cooling command and temperature hysteresis compensation parameters of the thermoelectric cooler at the target power are determined by the control unit. The target power is obtained by calculating u(t) = Kp*e(t) + Ki*∑e(t) + Kd*[e(t) - e(t-1)], where u(t) is the target power, e(t) is the power difference between adjacent times, t is the current time, and t-1 is the previous time; Kp, Ki, and Kd are the proportional coefficient, integral coefficient, and derivative coefficient, respectively.

[0031] The control unit feeds back the PID cooling command and temperature hysteresis compensation parameters to the semiconductor cooler, and controls the semiconductor cooler to cool according to the target power based on the PID cooling command and temperature hysteresis compensation parameters, so that the semiconductor cooler can provide low-temperature stimulation to the oral cavity and throat of the person with swallowing disorders through the contact layer.

[0032] Optionally, the process for setting the proportional coefficient, integral coefficient, and derivative coefficient includes:

[0033] When the integral coefficient and the derivative coefficient are set to 0, the control semiconductor cooler is in pure proportional adjustment mode.

[0034] Obtain the maximum value of the proportional coefficient when the target power is in critical oscillation, and determine the oscillation period Pc corresponding to the critical oscillation;

[0035] The integral coefficient is set based on the oscillation period and the proportional coefficient; the integral coefficient is calculated by the following formula: Ki=Kp / (0.5*Pc);

[0036] The differential coefficient is set based on the oscillation period and the proportional coefficient; the differential coefficient is calculated by the following formula: Kd=Kp*0.15*Pc.

[0037] Thirdly, embodiments of the present invention also provide an electronic device, including a processor and a memory, the memory storing computer-executable instructions executable by the processor, the processor executing the computer-executable instructions to implement the steps of the control method for the ice-sensing stimulation device provided in the second aspect.

[0038] Fourthly, embodiments of the present invention also provide a storage medium storing computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the steps of the control method for the ice-sensing stimulation device provided in the second aspect.

[0039] This invention provides an ice-sensing stimulation device and its control method. The ice-sensing stimulation device is used to provide low-temperature stimulation to the oral and pharyngeal regions of individuals with swallowing disorders. It includes: a stimulation end, a control unit, and a water tank. The control port of the stimulation end is connected to the control unit via a wire, and the water port of the stimulation end is connected to the water tank via a water pipe. The stimulation end includes: a thermoelectric cooler, a contact layer, a temperature sensor, and a heat dissipation substrate. One end of the contact layer contacts the oral and pharyngeal regions of the individual with swallowing disorders; the other end of the contact layer is connected to the cold end of the thermoelectric cooler, and the hot end of the thermoelectric cooler is connected to the heat dissipation substrate. The cold end is used to transfer the ice-sensing temperature generated by the thermoelectric cooler to the contact layer, and the hot end is used to transfer the heat generated by the thermoelectric cooler to the heat dissipation substrate. The water port is located in the heat dissipation substrate. Cooling water in the water tank contacts the heat dissipation substrate through a water pipe and the water port; the cooling water is used to transfer heat from the heat dissipation substrate to the water tank. The temperature sensor is located in the contact layer and is used to acquire the temperature value of the contact layer in real time. The first control port of the control unit is connected to the control end of the thermoelectric cooler, and the second control port of the control unit is connected to the temperature transmission end of the temperature sensor. The control unit acquires real-time temperature values ​​from a temperature sensor via a second control port and dynamically generates corresponding cooling commands for the thermoelectric cooler based on these values. The control unit also transmits the cooling commands to the thermoelectric cooler via a first control port and uses these commands to control the cold end of the cooler to reach an icy temperature; this icy temperature is lower than the perceived temperature of the patient's oral and pharyngeal regions. During the low-temperature stimulation of the oral and pharyngeal regions of patients with swallowing difficulties, this icy stimulation device uses a built-in thermoelectric cooler and temperature sensor to dynamically adjust the temperature in real time, significantly improving temperature control accuracy. This improved temperature control accuracy allows for a smaller water tank size and enables fanless operation, resulting in excellent quiet operation and a superior user experience.

[0040] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of the first ice-sensing stimulation device provided in an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of the second ice-sensing stimulation device provided in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of a stimulation end provided in an embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of the third type of ice-sensing stimulation device provided in an embodiment of the present invention;

[0047] Figure 5 This is a partial structural diagram of the water pipe and heat dissipation substrate in an ice-sensing stimulation device provided in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the structure of the fourth ice-sensing stimulation device provided in the embodiments of the present invention;

[0049] Figure 7 A flowchart of a control method for an ice-sensing stimulation device provided in an embodiment of the present invention;

[0050] Figure 8 A flowchart illustrating the setting process of proportional coefficient, integral coefficient, and derivative coefficient in a control method for an ice-sensing stimulation device provided in an embodiment of the present invention.

[0051] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0052] icon:

[0053] 100 - Stimulation end; 101 - Semiconductor cooler; 102 - Contact layer; 103 - Temperature sensor; 104 - Heat dissipation substrate; 105 - Thermally conductive adhesive layer; 200 - Control unit; 210 - PID control module; 300 - Water tank; 310 - Inlet pipe; 320 - Outlet pipe; 330 - Water pump; 400 - Leakage detection module; 410 - Conductivity sensor; 420 - Flow meter; 500 - Audible and visual alarm module;

[0054] 11-Processor; 12-Memory; 13-Bus; 14-Communication interface. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] To facilitate understanding of this embodiment, we will first describe a cold-sensing stimulation device disclosed in this embodiment of the invention. This device is used to provide low-temperature stimulation to the oral and pharyngeal areas of individuals with swallowing disorders, such as... Figure 1 As shown, the ice-sensing stimulation device includes: a stimulation end 100, a control unit 200, and a water tank 300; the control port of the stimulation end 100 is connected to the control unit 200 via a wire, and the water port of the stimulation end 100 is connected to the water tank 300 via a water pipe.

[0057] The stimulation end 100 includes: a semiconductor cooler 101, a contact layer 102, a temperature sensor 103, and a heat dissipation substrate 104; one end of the contact layer 102 contacts the oral cavity and pharynx of the person with swallowing difficulties; the other end of the contact layer 102 is connected to the cold end of the semiconductor cooler 101, and the hot end of the semiconductor cooler 101 is connected to the heat dissipation substrate 104; the cold end is used to transfer the icy temperature generated by the semiconductor cooler 101 to the contact layer 102, and the hot end is used to transfer the heat generated by the semiconductor cooler 101 to the heat dissipation substrate 104; a water channel port is disposed in the heat dissipation substrate 104; cooling water in the water tank 300 contacts the heat dissipation substrate 104 through a water pipe and the water channel port; the cooling water is used to transfer the heat in the heat dissipation substrate 104 to the water tank 300.

[0058] Temperature sensor 103 is disposed in contact layer 102 for real-time acquisition of temperature value of contact layer 102; first control port of control unit 200 is connected to control terminal of semiconductor cooler 101, and second control port of control unit 200 is connected to temperature transmission terminal of temperature sensor 103.

[0059] The control unit 200 is used to acquire the temperature value collected in real time by the temperature sensor 103 through the second control port, and to dynamically generate the corresponding cooling command for the semiconductor cooler 101 using the temperature value in real time.

[0060] The control unit 200 is also used to transmit the cooling command to the semiconductor cooler 101 through the first control port, and use the cooling command to control the cold end of the semiconductor cooler 101 to reach the ice-feeling temperature in real time; wherein the ice-feeling temperature is lower than the body temperature of the oral cavity and throat of the person with swallowing difficulties.

[0061] Specifically, the stimulation end 100 is the core functional module for achieving low-temperature stimulation. The semiconductor cooler 101 can utilize the Peltier effect to achieve "cooling on the cooling side and generating heat on the heating side" after being powered on. It is the core component for generating low temperature, providing a stable cold source for the contact layer 102 and determining the basis of the stimulation temperature.

[0062] The contact layer 102 is directly attached to the oral / pharyngeal mucosa and is responsible for conducting the low temperature of the thermoelectric cooler (TEC) 101. It must be biocompatible and adapted to human anatomy to ensure that the stimulation is accurately applied to the mucosa.

[0063] Temperature sensor 103 monitors the temperature of contact layer 102 in real time and feeds the temperature data back to control unit 200. This is the key to achieving precise temperature control. The cooling power is dynamically adjusted based on the temperature data to maintain the required temperature during the low-temperature stimulation process.

[0064] The heat dissipation substrate 104 is in contact with the heating side of the semiconductor cooler 101, which can quickly dissipate excess heat, avoid heat accumulation affecting cooling efficiency, and ensure that the semiconductor cooler 101 continues to work stably.

[0065] The control unit 200, acting as the "brain" of the ice-sensing stimulation device, coordinates and intelligently manages the system. Connecting the stimulation end 100 (including the temperature sensor 103 and the thermoelectric cooler 101) to the water tank 300, it enables closed-loop temperature control. By receiving feedback from the temperature sensor 103, it automatically adjusts the current / power of the thermoelectric cooler 101, precisely controlling the temperature of the contact layer 102 (e.g., stabilizing it within a low-temperature range suitable for mucosal stimulation), ensuring stimulation accuracy.

[0066] The control unit 200 can also support setting treatment parameters such as stimulation duration, frequency, and target temperature, and automatically execute according to the rehabilitation plan. It can also monitor the equipment status in real time (such as cooling efficiency and sensor data) and provide early warning / protection when abnormalities occur.

[0067] The water tank 300 is an auxiliary heat dissipation device to ensure the thermal balance of the equipment. It is connected to the heat dissipation base plate 104 through water pipes, and the internal water circulation continuously removes heat from the heat dissipation base plate 104 to maintain the thermal balance of the stimulation end 100. If the water tank 300 is short of water or the water circulation fails, it will lead to poor heat dissipation, reduced efficiency of the semiconductor cooler 101, or even overheating and damage. Therefore, it is an important auxiliary module to ensure the stable operation of the equipment.

[0068] The specific parameters of the semiconductor cooler 101 are: 10×10×3 mm, cooling power of 15W, and cold end directly connected to the contact surface (contact area 1cm²). 2 The hot end is connected to the heat dissipation substrate 104. The water tank 300 can be used as a remote water cooling system with ultrapure water (conductivity ≤1μS / cm) as the medium, with a flow rate of 0.3~0.8 L / min; the cross-sectional area of ​​the water pipe is 3 mm². 2 The temperature sensor 103 can be an NTC3950 with an accuracy of ±0.2℃, and is embedded 1 mm below the contact layer 102; the contact surface material of the contact layer 102 is medical-grade titanium alloy (plated with 0.1μm titanium nitride).

[0069] Optional, such as Figure 2 As shown, the stimulation end 100 has a sheet-like structure, comprising two thermoelectric coolers 101, two contact layers 102, and two temperature sensors 103; wherein the two thermoelectric coolers 101, two contact layers 102, and two temperature sensors 103 are symmetrically distributed along the heat dissipation substrate 104. Since the two thermoelectric coolers 101, two contact layers 102, and two temperature sensors 103 are symmetrically distributed on both sides of the heat dissipation substrate 104, the user can directly select one side for low-temperature stimulation, improving ease of use.

[0070] Optional, such as Figure 3 As shown, the stimulation end 100 has a cylindrical structure; wherein, the stimulation end 100 includes six semiconductor coolers 101, the contact layer 102 is located on the surface of the cylindrical structure, the semiconductor coolers 101 are disposed inside the cylinder and arranged in a hexagonal pattern; the semiconductor coolers 101 are in contact with the heat dissipation substrate 104 through the thermally conductive adhesive layer 105. Figure 3 The center of the cylinder is a circulating water pipe. The contact layer 102 is a silicone rubber coating layer that wraps around the semiconductor cooler 101. The semiconductor cooler 101 can provide a cooling effect to the cylinder through a hexagonal arrangement, and the heat generated by the semiconductor cooler 101 is transferred to the circulating water pipe through the thermally conductive adhesive layer 105.

[0071] Optional, such as Figure 4 As shown, the control unit 200 includes a PID control module 210; wherein, the output terminal of the PID control module 210 is connected to the control terminal of the semiconductor cooler 101 as the first control port of the control unit 200.

[0072] The input terminal of the PID control module 210 is connected to the temperature transmission terminal of the temperature sensor 103 as the second control port of the control unit 200.

[0073] The PID control module 210 is used to perform PID calculations based on the temperature value input at the input terminal and generate a real-time cooling command, which is then sent to the control terminal of the semiconductor cooler 101 through the output terminal.

[0074] In precise low-temperature stimulation devices targeting the oral and pharyngeal mucosa, the PID control module is the core "intelligent regulator" of the control unit 200. Relying on proportional, integral, and derivative control logics, it achieves precise closed-loop temperature control. It acts like the device's "temperature brain," continuously comparing the difference between the target temperature and the actual temperature, and dynamically calculating and outputting control commands to allow the thermoelectric cooler 101 (TEC) to precisely adjust the temperature of the contact layer 102, adapting to the stringent temperature requirements for mucosal stimulation in dysphagia rehabilitation treatment.

[0075] Temperature sensor 103 collects real-time temperature data of the contact layer 102 (such as the dynamic value within the common range of 0-10℃, which is required to maintain low mucosal stimulation temperature during treatment), and transmits the electrical signal (or digital signal) to the input terminal (second control port) of PID control module 210 through the temperature transmission terminal. This temperature data serves as the "sensing basis" for PID control, allowing the module to constantly monitor the temperature state of the stimulation end 100 and provide real-time feedback for regulation.

[0076] When the PID control module 210 receives the input signal from the temperature sensor 103, it will perform the following three core calculations:

[0077] The proportional (P) stage calculates the product of the "deviation between the current temperature and the target temperature" and the proportional coefficient (Kp) to quickly respond to temperature deviations. For example, if the target temperature is 5℃ and the actual temperature is 7℃, the proportional stage will immediately output a basic control signal of "cooling trend" based on the deviation (2℃) and Kp, allowing the semiconductor cooler 101 to initially adjust its cooling power.

[0078] Integral (I) stage: The integral operation calculates the cumulative value of the temperature deviation over time (the integral time Ti is involved in the adjustment) to eliminate long-term steady-state error. Assuming that the equipment temperature has a continuous slight deviation due to environmental interference, heat dissipation fluctuations, etc. (e.g., always 0.2℃ higher than the target temperature), the integral stage will gradually accumulate the integral value of the deviation and continuously output a compensation signal until the temperature stabilizes at the target value, thus solving the "steady-state error" problem that may remain in simple proportional control.

[0079] Differential (D) stage: Based on the "rate of change of temperature deviation" (differential time Td participates in the adjustment), differential calculation is performed to predict the temperature change trend. For example, if the temperature sensor 103 detects that the temperature rises rapidly from 5°C to 6°C (large rate of change), the differential stage will output a suppression signal in advance, causing the semiconductor cooler 101 to increase the cooling capacity, prevent the temperature from deviating too much from the target value, and improve the stability and response speed of the system.

[0080] Through the coordinated operation of the P, I, and D components, the PID control module 210 generates dynamic cooling commands in real time (such as adjusting the operating current and voltage duty cycle of the semiconductor cooler 101) to precisely control the cooling intensity. In a real-world scenario, the inventors obtained the following PID parameters: Kp = 1.8-2.5, Ki = 0.3-0.7, Kd = 0.8-1.2; where Kp is the proportional coefficient, Ki is the integral coefficient, and Kd is the derivative coefficient.

[0081] The PID control module 210 sends the calculated cooling command to the control terminal of the thermoelectric cooler 101 through its output terminal. The thermoelectric cooler 101, acting as an "actuator," adjusts its own cooling power according to the command. If the command requires "enhanced cooling," the TEC will increase the current input or adjust the operating mode to reduce the temperature of the contact layer 102. If the temperature has reached the target, the command will cause the TEC to maintain a stable output to ensure that the temperature of the stimulation end 100 remains constant.

[0082] The PID control module 210 connects the entire process of "temperature sensing (sensor) - intelligent calculation (control unit 200) - cooling execution (TEC) - heat dissipation guarantee (water tank 300 + heat dissipation plate 104)," upgrading the low-temperature stimulation device from "simple cooling" to "precise, intelligent, and safe treatment tool." It not only meets the precise requirements of mucosal stimulation in swallowing disorder rehabilitation but also reduces the difficulty of medical and nursing operations through automation and closed-loop control, making treatment more efficient and controllable, and promoting the in-depth application of this type of rehabilitation equipment towards "precision medicine."

[0083] In simple terms, the PID control module 210 acts as the device's "temperature manager," using real-time "sensing-calculation-regulation" to ensure accurate and stable low-temperature stimulation, effectively addressing the problem while maintaining safety. In practical scenarios, the PID control module 210 adjusts the power of the semiconductor cooler 101 based on real-time temperature feedback, maintaining the contact surface temperature of the contact layer 102 at 2±0.3℃.

[0084] Optionally, the ice-sensing stimulation device also includes a leak detection module 400; the leak detection module 400 is used to monitor for leaks in the water pipe between the water tank 300 and the stimulation end 100.

[0085] The leakage detection module 400 includes a conductivity sensor 410 and a flow meter 420. The conductivity transmission port of the conductivity sensor 410 is connected to the third control port of the control unit 200, and the flow transmission port of the flow meter 420 is connected to the fourth control port of the control unit 200.

[0086] The conductivity sensor 410 is used to collect the conductivity of the cooling water in the water pipe in real time, and transmit the conductivity to the control unit 200 through the third control port for leakage monitoring.

[0087] The flow meter 420 is used to collect the flow rate of cooling water in the water pipe in real time and transmit the flow rate to the control unit 200 through the fourth control port for leakage monitoring.

[0088] The leak detection module 400, serving as the core of the safety monitoring for the ice-sensing stimulation device, operates in conjunction with the conductivity sensor 410 and the flow meter 420. The conductivity sensor 410 continuously collects the conductivity of the cooling water within the pipe. Due to the stable composition of the cooling water, its conductivity remains relatively constant during normal circulation. However, if a leak occurs, external media may enter or cooling water may be lost, causing abnormal fluctuations in conductivity. The conductivity data is then transmitted in real-time to the control unit 200 via the third control port. The flow meter 420 simultaneously monitors the cooling water flow rate. Under normal operating conditions, the flow rate remains stable. When a leak occurs, the flow rate may become abnormal due to the cooling water leak or changes in pipe pressure. The flow rate value is then transmitted to the control unit 200 via the fourth control port. The combination of these two components provides multi-dimensional data support for leak monitoring.

[0089] Optionally, the ice-sensing stimulation device also includes an audible and visual alarm module 500; the alarm command transmission port of the audible and visual alarm module is connected to the fifth control port of the control unit 200.

[0090] The audible and visual alarm module 500 is used to provide audible and visual alarms to people with swallowing disorders according to the audible and visual alarm commands transmitted in the fifth control port; wherein, the audible and visual alarm commands are obtained by the control unit 200 by comparing the temperature value, conductivity and flow rate value with the preset threshold.

[0091] The audible and visual alarm module 500 is deeply integrated with the control unit 200. After receiving data from the temperature sensor 103, conductivity sensor 410, and flow meter 420, the control unit 200 compares the temperature, conductivity, and flow rates with preset safety thresholds. When the temperature exceeds the precise temperature control range, or when the conductivity or flow rate data indicates abnormalities such as water pipe leakage, the control unit 200 quickly determines the cause and generates an audible and visual alarm command, which is transmitted to the audible and visual alarm module 500 via the fifth control port. The module immediately triggers an audible and visual warning, using visually appealing methods such as flashing lights and buzzer alarms to signal patients with swallowing disorders and medical staff, promptly alerting them to any abnormalities and ensuring the safe operation of the equipment and the stability of the treatment process.

[0092] Optional, such as Figure 5 As shown, the water pipe includes an inlet pipe 310 and an outlet pipe 320; the cooling water in the inlet pipe 310 flows from the water tank 300 into the heat dissipation substrate 104, and the cooling water in the outlet pipe 320 flows from the heat dissipation substrate 104 into the water tank 300.

[0093] The water pipe consists of an inlet pipe 310 and an outlet pipe 320, forming a cooling water circulation path between the water tank 300 and the heat dissipation substrate 104. The inlet pipe 310 is responsible for transporting the cooling water in the water tank 300 to the heat dissipation substrate 104, providing a cold source for the heat dissipation substrate 104 to transfer heat; the outlet pipe 320 sends the cooling water that has completed heat exchange and increased in temperature back to the water tank 300. With the help of the heat dissipation mechanism of the water tank 300 (such as natural heat dissipation, active cooling, etc.), the cooling water is cooled down and re-enters the circulation, ensuring that the heat dissipation substrate 104 continuously and stably dissipates heat.

[0094] The heat dissipation substrate 104 is made of aluminum alloy; a spiral fluid channel is provided in the heat dissipation substrate 104, and the inlet and outlet of the spiral fluid channel are connected to the water inlet pipe 310 and the water outlet pipe 320 respectively as water ports.

[0095] The heat dissipation substrate 104 is made of aluminum alloy, utilizing its high thermal conductivity, light weight, and ease of processing to efficiently conduct heat generated by the semiconductor cooler 101. An internally designed spiral fluid channel serves as the inlet and outlet of the channel, connecting to the inlet pipe 310 and outlet pipe 320, respectively. The spiral micro-fluid channel integrated within the heat dissipation substrate 104 has a diameter of 12 mm and a total length of 100 mm. The spiral structure significantly increases the flow path and residence time of the cooling water within the substrate, allowing for thorough heat exchange between the cooling water and the substrate, improving heat dissipation efficiency, and helping the equipment maintain the thermal equilibrium environment required for low-temperature stimulation.

[0096] Optional, such as Figure 6 As shown, the ice-sensing stimulation device also includes a water pump 330; wherein, the water pump 330 is installed in the water inlet pipe 310; the flow rate control port of the water pump 330 is connected to the sixth control port of the control unit 200; the water pump 330 is used to operate according to the rotational speed corresponding to the flow rate control command transmitted in the sixth control port.

[0097] The water pump 330, integrated into the inlet pipe 310, is the "power engine" for water circulation. The control unit 200 sends flow rate control commands to the water pump 330 via the sixth control port based on overall system requirements (such as changes in heat dissipation load and preset flow parameters). Upon receiving the commands, the water pump 330 precisely adjusts its motor speed, thereby changing the flow rate of the cooling water. For example, when the cooling power of the semiconductor cooler 101 increases and the heat dissipation substrate 104 requires stronger heat dissipation, the control unit 200 instructs the water pump 330 to increase its speed, accelerating the cooling water circulation and enhancing heat exchange efficiency. If the equipment is under low load, the water pump 330 operates at a reduced speed, ensuring heat dissipation while saving energy and reducing noise, allowing the water circulation to dynamically adapt to the temperature control requirements of the ice-sensing stimulation device.

[0098] Optionally, the water inlet and water pipe are sealed using threads and fluororubber sealing rings. The water inlet and water pipe employ a dual sealing scheme of threads and fluororubber sealing rings. The threaded connection first achieves basic fixation and initial sealing through a mechanical structure, utilizing the interlocking pressure of the threads to ensure a tight fit between the pipe surfaces. The fluororubber sealing ring, as the core sealing element, leverages its resistance to high and low temperatures, chemical corrosion, and strong elastic deformation capabilities to tightly fill the microscopic gaps between the water inlet and water pipe under the preload of the threads. Even under long-term exposure to changes in cooling water pressure and temperature, the fluororubber sealing ring maintains its elastic seal, effectively preventing cooling water leakage, ensuring the airtightness and stability of the water system, and avoiding equipment failure or safety hazards caused by leakage.

[0099] As can be seen from the ice-sensing stimulation device mentioned in the above embodiments, during the low-temperature stimulation of the oral and pharyngeal areas of individuals with swallowing disorders, the device achieves real-time dynamic temperature adjustment through the built-in semiconductor cooler 101 and temperature sensor 103, significantly improving temperature control accuracy and achieving precise low-temperature stimulation of the oral mucosa at 0~3℃, reducing the risk of aspiration by 67%. With the improved temperature control accuracy, the size of the water tank 300 can be reduced, and heat dissipation requirements can be met without a fan, resulting in excellent quiet operation and a better user experience.

[0100] This invention provides a control method for an ice-sensing stimulation device. The method is applied to the ice-sensing stimulation device mentioned in the above embodiments. The ice-sensing stimulation device includes at least: a stimulation end, a control unit, and a water tank. The stimulation end includes at least a semiconductor cooler, a contact layer, a temperature sensor, and a heat dissipation substrate.

[0101] like Figure 7 As shown, the method includes:

[0102] Step S701: After detecting that the stimulation end is placed in the oral cavity and throat of the person with swallowing difficulties and that the water tank and the stimulation end are connected, the control unit controls the temperature sensor to collect the temperature value of the contact layer in real time.

[0103] Step S702: Determine the target power of the semiconductor cooler based on the real-time collected temperature value, and use the control unit to determine the PID cooling command and temperature hysteresis compensation parameters of the semiconductor cooler at the target power. The target power is obtained by calculating u(t)=Kp*e(t)+Ki*∑e(t)+Kd*[e(t)-e(t-1)], where u(t) is the target power, e(t) is the power difference between adjacent times, t is the current time, and t-1 is the previous time; Kp, Ki, and Kd are the proportional coefficient, integral coefficient, and derivative coefficient, respectively.

[0104] In step S703, the control unit feeds back the PID cooling command and temperature hysteresis compensation parameters to the semiconductor cooler, and controls the semiconductor cooler to cool according to the target power based on the PID cooling command and temperature hysteresis compensation parameters, so that the semiconductor cooler can provide low-temperature stimulation to the oral cavity and throat of the person with swallowing disorders through the contact layer.

[0105] This method achieves real-time PID dynamic adjustment of temperature through a built-in semiconductor cooler and temperature sensor. Specifically, the temperature sampling process uses an NTC3950 sensor (±0.2℃ accuracy), embedded 1mm below the contact head. The anti-interference design includes signal shielding and single-point grounding, which can suppress electromagnetic interference (sampling fluctuation ≤0.1℃); in addition, the sampling frequency is ≥10Hz (to avoid differential noise amplification).

[0106] In the PID control process, u(t) = Kp*e(t) + Ki*∑e(t) + Kd*[e(t) - e(t-1)] is used. During the setting and updating of dynamic PID parameters, the initial parameters (based on the Ziegler-Nichols method) are Kp = 1.8~2.5, Ki = 0.3~0.7, and Kd = 0.8~1.2. Furthermore, a temperature hysteresis compensation mechanism is added, specifically by incorporating an adaptive ambient temperature term (ΔKp = ±0.3 / 10℃) in conjunction with the PID cooling command.

[0107] Optionally, the setting process for the proportional coefficient, integral coefficient, and derivative coefficient is as follows: Figure 8 As shown, it includes:

[0108] Step S801: When the integral coefficient and the derivative coefficient are set to 0, the semiconductor cooler is controlled to be in pure proportional adjustment mode.

[0109] Step S802: Obtain the maximum value of the proportional coefficient when the target power is in critical oscillation, and determine the oscillation period Pc corresponding to the critical oscillation;

[0110] Step S803: Set the integral coefficient based on the oscillation period and the proportional coefficient; wherein, the integral coefficient is calculated by the following formula: Ki=Kp / (0.5*Pc);

[0111] Step S804: Set the differential coefficient based on the oscillation period and the proportional coefficient; wherein, the differential coefficient is calculated by the following formula: Kd=Kp*0.15*Pc.

[0112] During the debugging process, for the pure proportional mode, Kp can be gradually increased until the system exhibits critical oscillation (record the oscillation period Pc); after adding the integral, assume Ki=Kp / (0.5*Pc) to eliminate steady-state error (e.g., ±0.3℃→±0.1℃); after adding the derivative, assume Kd=Kp*0.15*Pc to suppress overshoot (overshoot ≤0.5℃ in a 40℃ environment).

[0113] During the control of the water-cooled pump, the flow-current relationship involved is 0.3L / min->200mA, 0.8L / min->650mA; the abnormal flow judgment condition is: current fluctuation > ±15% - triggering a leakage alarm.

[0114] In real-world scenarios, the above method effectively stimulates the oral and pharyngeal regions of individuals with swallowing difficulties using low-temperature stimulation, meeting biosafety requirements. Specifically, when using the ice-sensing stimulation device, the MTT (Medium-to-Trench) cytotoxicity test results showed a survival rate of 98.2%, meeting the standard of ≥90% (ISO 109935). Furthermore, the skin irritation test results showed no reaction (0 / 10 samples), meeting the negative requirement (ISO 1099310). Continuous operating stability results showed a fluctuation of ≤0.35℃ over 30 minutes, demonstrating excellent stability.

[0115] As can be seen from the control method for the ice-sensing stimulation device mentioned in the above embodiments, during the process of using the ice-sensing stimulation device to perform low-temperature stimulation on the oral and pharyngeal parts of people with swallowing disorders, the method realizes real-time dynamic adjustment of temperature through the built-in semiconductor cooler and temperature sensor, which greatly improves the temperature control accuracy. With the improvement of temperature control accuracy, it is beneficial to reduce the size of the water tank and meet the heat dissipation requirements without a fan, with excellent quietness and a better user experience.

[0116] The control method for the ice-sensing stimulation device provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned ice-sensing stimulation device embodiment. For the sake of brevity, any parts not mentioned in the system embodiment can be referred to the corresponding content in the aforementioned ice-sensing stimulation device embodiment.

[0117] This embodiment also provides an electronic device, the structural schematic diagram of which is shown below. Figure 9 As shown, the device includes a processor 11 and a memory 12; wherein the memory 12 is used to store one or more computer instructions, which are executed by the processor to implement the steps of the control method for the ice-sensing stimulation device described above.

[0118] Figure 9 The electronic device shown also includes a bus 13 and a communication interface 14, with the processor 11, communication interface 14 and memory 12 connected via the bus 13.

[0119] The memory 12 may include high-speed random access memory (RAM), and may also include non-volatile memory, such as at least one disk storage device. The bus 13 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 9 It is indicated by a single double-headed arrow, but does not mean that there is only one bus or one type of bus.

[0120] The communication interface 14 is used to connect to at least one user terminal and other network units through the network interface, and to send encapsulated IPv4 packets or IPv4 packets to the user terminal through the network interface.

[0121] Processor 11 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 11 or by instructions in software form. Processor 11 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this disclosure. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this disclosure can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 12, and processor 11 reads information from memory 12 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0122] This invention also provides a storage medium storing a computer program, which, when executed by a processor, performs the steps of the control method for the ice-sensing stimulation device described in the foregoing embodiments.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, devices, and methods can be implemented in other ways. The system embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0124] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0125] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0126] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0127] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ice-sensing stimulation device, characterized in that, The ice-sensing stimulation device is used to provide low-temperature stimulation to the oral and pharyngeal areas of individuals with swallowing disorders. The ice-sensing stimulation device includes: a stimulation end, a control unit, and a water tank; the control port of the stimulation end is connected to the control unit via a wire, and the water port of the stimulation end is connected to the water tank via a water pipe. The stimulation end includes a thermoelectric cooler, a contact layer, a temperature sensor, and a heat dissipation substrate. One end of the contact layer contacts the oral cavity and pharynx of the person with swallowing difficulties. The other end of the contact layer is connected to the cold end of the thermoelectric cooler, and the hot end of the thermoelectric cooler is connected to the heat dissipation substrate. The cold end is used to transfer the icy temperature generated by the thermoelectric cooler to the contact layer, and the hot end is used to transfer the heat generated by the thermoelectric cooler to the heat dissipation substrate. A water channel port is disposed in the heat dissipation substrate. Cooling water in the water tank contacts the heat dissipation substrate through the water pipe and the water channel port. The cooling water is used to transfer the heat in the heat dissipation substrate to the water tank. The temperature sensor is disposed in the contact layer for real-time acquisition of the temperature value of the contact layer; the first control port of the control unit is connected to the control terminal of the semiconductor cooler, and the second control port of the control unit is connected to the temperature transmission terminal of the temperature sensor. The control unit is used to acquire the temperature value collected in real time by the temperature sensor through the second control port, and to dynamically generate the corresponding cooling command for the semiconductor cooler in real time using the temperature value. The control unit is also used to transmit the cooling command to the semiconductor cooler through the first control port, and use the cooling command to control the cold end of the semiconductor cooler to reach the ice-feeling temperature in real time; wherein the ice-feeling temperature is lower than the body temperature of the oral cavity and throat of the person with swallowing difficulties. The stimulation end has a sheet-like structure and includes two semiconductor coolers, two contact layers, and two temperature sensors; wherein the two semiconductor coolers, two contact layers, and two temperature sensors are symmetrically distributed along the heat dissipation substrate.

2. The ice-sensing stimulation device according to claim 1, characterized in that, The stimulation end has a cylindrical structure; wherein, the stimulation end includes six semiconductor coolers, the contact layer is located on the surface of the cylindrical structure, the semiconductor coolers are disposed inside the cylinder and arranged in a hexagonal pattern; the semiconductor coolers are in contact with the heat dissipation substrate through a thermally conductive adhesive layer.

3. The ice-sensing stimulation device according to claim 1, characterized in that, The control unit includes a PID control module; wherein the output terminal of the PID control module is connected to the control terminal of the semiconductor cooler as the first control port of the control unit. The input terminal of the PID control module is connected to the temperature transmission terminal of the temperature sensor as the second control port of the control unit. The PID control module is used to perform PID calculations based on the temperature value input at the input terminal and generate the cooling command in real time, which is then sent to the control terminal of the semiconductor cooler through the output terminal.

4. The ice-sensing stimulation device according to claim 1, characterized in that, The ice-sensing stimulation device also includes a leakage detection module; the leakage detection module is used to monitor the water pipe between the water tank and the stimulation end; The leakage detection module includes a conductivity sensor and a flow meter. The conductivity transmission port of the conductivity sensor is connected to the third control port of the control unit, and the flow transmission port of the flow meter is connected to the fourth control port of the control unit. The conductivity sensor is used to collect the conductivity of the cooling water in the water pipe in real time, and transmit the conductivity to the control unit through the third control port for leakage monitoring; The flow meter is used to collect the flow rate of the cooling water in the water pipe in real time, and transmit the flow rate to the control unit through the fourth control port for leakage monitoring.

5. The ice-sensing stimulation device according to claim 4, characterized in that, The ice-sensing stimulation device also includes an audible and visual alarm module; the alarm command transmission port of the audible and visual alarm module is connected to the fifth control port of the control unit. The audible and visual alarm module is used to issue an audible and visual alarm to the person with swallowing difficulties according to the audible and visual alarm command transmitted in the fifth control port; wherein, the audible and visual alarm command is obtained by the control unit by comparing the temperature value, the conductivity, and the flow rate value with a preset threshold.

6. The ice-sensing stimulation device according to claim 1, characterized in that, The water pipe includes an inlet pipe and an outlet pipe; the cooling water in the inlet pipe flows from the water tank into the heat dissipation substrate, and the cooling water in the outlet pipe flows from the heat dissipation substrate into the water tank; The heat dissipation substrate is made of aluminum alloy; The heat dissipation substrate is provided with a spiral fluid channel, and the inlet and outlet of the spiral fluid channel are connected to the water inlet pipe and the water outlet pipe, respectively, as water circuit ports.

7. The ice-sensing stimulation device according to claim 6, characterized in that, The ice-sensing stimulation device also includes a water pump; wherein the water pump is disposed in the water inlet pipe; the flow rate control port of the water pump is connected to the sixth control port of the control unit; The water pump is used to operate at a speed corresponding to the flow rate control command transmitted in the sixth control port.

8. A control method for an ice-sensing stimulation device, characterized in that, The method is applied to the ice-sensing stimulation device according to any one of claims 1 to 7; the ice-sensing stimulation device includes at least: a stimulation end, a control unit and a water tank, and the stimulation end includes at least a semiconductor cooler, a contact layer, a temperature sensor and a heat dissipation substrate; The method includes: Once the connection between the water tank and the stimulation end is detected, the control unit controls the temperature sensor to collect the temperature value of the contact layer in real time. The target power of the thermoelectric cooler is determined based on the real-time collected temperature value, and the PID cooling command and temperature hysteresis compensation parameters of the thermoelectric cooler corresponding to the target power are determined by the control unit. The target power is obtained by calculating u(t)=Kp*e(t)+Ki*∑e(t)+Kd*[e(t)-e(t-1)], where u(t) is the target power, e(t) is the power difference between adjacent times, t is the current time, and t-1 is the previous time; Kp, Ki, and Kd are the proportional coefficient, integral coefficient, and derivative coefficient, respectively. The control unit feeds back the PID cooling command and the temperature hysteresis compensation parameter to the semiconductor cooler, and controls the semiconductor cooler to perform cooling according to the target power based on the PID cooling command and the temperature hysteresis compensation parameter.

9. The control method for the ice-sensing stimulation device according to claim 8, characterized in that, The process of setting the proportional coefficient, the integral coefficient, and the derivative coefficient includes: When the integral coefficient and the derivative coefficient are set to 0, the semiconductor cooler is controlled to be in a pure proportional adjustment mode. Obtain the maximum value of the proportional coefficient when the target power is in a critical oscillation, and determine the oscillation period Pc corresponding to the critical oscillation; The integral coefficient is set based on the oscillation period and the proportional coefficient; wherein the integral coefficient is calculated by the following formula: Ki=Kp / (0.5*Pc); The differential coefficient is set based on the oscillation period and the proportional coefficient; wherein the differential coefficient is calculated by the following formula: Kd=Kp*0.15*Pc.

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