Control system of electric heating mattress

Abstract

The invention discloses a control system of an electric heating mattress. The control system comprises the electric heating mattress and a client. A wireless communication link is established between the client and the main controller of the electric heating mattress, and the client is used for providing a man-machine interaction access interface. The electric heating mattress is provided with a main controller and a temperature PID (Proportion Integration Differentiation) controller, and the main controller is connected with the temperature PID controller; the main controller of the electric heating mattress is configured to execute the following remote control steps: acquiring a remote authentication request sent by a client; when the remote authentication request passes authentication, receiving a switching instruction and / or a temperature control instruction of the client; opening and closing the electric heating mattress according to the switching instruction; and according to the temperature control instruction, the temperature PID controller is instructed to perform heating work. According to the invention, the client is introduced to construct a remote communication link with the electric heating mattress, so that the problem of potential safety hazards of a traditional electric blanket is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric heating pads, and particularly to a control system for an electric heating mattress. Background Art

[0002] With the increasing demand for winter heating, electric blankets, as a convenient and economical heating device, are widely used in households. However, traditional electric blankets have many potential safety hazards and functional limitations, and the safety of electric blankets has always been a key concern for the public. Since long-term power-on may lead to overheating, short circuits, and even fires, there have been many fire accidents caused by improper use of electric blankets in recent years.

[0003] Since the heating principle of an electric blanket is to generate heat through the energization of resistance wires, once used improperly, such as long-term power-on, it is easy to cause excessive temperature and extremely prone to fires; or due to the negligence of users, it is often easy to forget to turn it off and cause accidents. In summary, optimizing the functional technology of electric heating mattresses is not only driven by market demand but also an inevitable trend of technological development. Summary of the Invention

[0004] To solve the above-mentioned technical problems existing in the prior art, the purpose of the present invention is to provide a control system for an electric heating mattress.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The present invention also provides a control system for an electric heating mattress, and the control system includes an electric heating mattress and a client;

[0007] The client establishes a wireless communication link with the main controller of the electric heating mattress, and the client is used to provide a human-computer interaction access interface;

[0008] The electric heating mattress has a main controller and a temperature PID controller, and the main controller is connected to the temperature PID controller; wherein, the main controller of the electric heating mattress is configured to execute the following remote control steps:

[0009] Obtain a remote authentication request sent by the client;

[0010] When the remote authentication request is authenticated successfully, receive the switch instruction and / or temperature control instruction from the client;

[0011] Open or close the electric heating mattress according to the switch instruction;

[0012] According to the temperature control instruction, instruct the temperature PID controller to perform heating work.

[0013] In a preferred embodiment, the electric heating mattress further has a temperature sensor, and the temperature sensor is connected to the main controller; wherein, the main controller of the electric heating mattress is configured to perform the following temperature control steps:

[0014] Obtain the set temperature r(k) in the temperature control instruction and the actual temperature y(k) collected by the temperature sensor;

[0015] Calculate the temperature deviation e(k) according to the set temperature r(k) and the actual temperature y(k);

[0016] Perform differential processing on the set temperature r(k) to obtain the temperature change rate dr(k) / dt;

[0017] Input the temperature deviation e(k) and the temperature change rate dr(k) / dt into the fuzzy controller for fuzzy processing to obtain the adjustment value ΔK of the PID parameters p ,ΔK i ,ΔK d ;

[0018] Input the adjusted PID parameters ΔK p ,ΔK i ,ΔK d into the temperature PID controller, and the temperature PID controller outputs a control quantity.

[0019] In a preferred embodiment, the electric heating mattress further has a fuzzy controller, and the fuzzy controller is used to perform fuzzy processing on the temperature deviation e(k) and the temperature change rate dr(k) / dt, specifically including the following steps:

[0020] Convert the temperature deviation e(k) and the temperature change rate dr(k) / dt into fuzzy sets;

[0021] Perform fuzzy inference on the fuzzy sets according to the preset fuzzy rule base to obtain fuzzy inference data;

[0022] Use the defuzzification algorithm to defuzzify the fuzzy inference data to obtain the PID parameter ΔK p ,ΔK i ,ΔK d .

[0023] In a preferred embodiment, the electric heating mattress further has a current PID controller and a drive circuit. The current PID controller is respectively connected to the temperature PID controller and the drive circuit, and the drive circuit is connected to the heating component of the electric heating mattress;

[0024] Wherein, the current PID controller outputs a drive signal according to the control quantity output by the temperature PID controller, drives the drive circuit based on the drive signal, and further controls the heating component.

[0025] In a preferred implementation, the authentication of the remote authentication request between the client and the main controller specifically includes:

[0026] When the client queries the target electric heating mattress, the client generates a security token;

[0027] The client sends a remote authentication request to the main controller of the electric heating mattress, and the remote authentication request includes the security token;

[0028] The main controller receives the remote authentication request from the client, generates a local security token, and compares it with the received security token;

[0029] When the received security token matches the generated local security token, the authentication is successful.

[0030] In a preferred implementation, the input value in the security token generation function includes a set of input parameters, and the set of input parameters includes at least an encrypted hash value based on a timestamp and a device identifier.

[0031] In a preferred implementation, the main controller includes a housing and a control circuit built in the housing, and the temperature PID controller, the current PID controller, and the drive circuit are all arranged in the housing.

[0032] In a preferred implementation, the electric heating mattress further includes a mattress body, and the mattress body includes a leather layer, an aluminum foil flame retardant cloth layer, a heating component, a carbon fiber cloth layer, a chemical fiber cotton layer, and a waterproof bottom cloth layer which are sequentially laminated from top to bottom.

[0033] In a preferred implementation, a sponge layer is further arranged between the carbon fiber cloth layer and the chemical fiber cotton layer.

[0034] In a preferred implementation, the mattress body further has a binding band, and the binding band is arranged around the outer peripheral wall of the mattress body.

[0035] Compared with the prior art, the present invention has at least the following beneficial effects:

[0036] The present invention also provides a control system for an electric heating mattress pad. The control system includes an electric heating mattress pad and a client. The client establishes a wireless communication link with the main controller of the electric heating mattress pad, and the client is used to provide a human-computer interaction access interface. The electric heating mattress pad has a main controller and a temperature PID controller, and the main controller is connected to the temperature PID controller; wherein, the main controller of the electric heating mattress pad is configured to perform the following remote control steps: obtain a remote authentication request sent by the client; when the remote authentication request is authenticated, receive the switch instruction and / or temperature control instruction of the client; turn on or off the electric heating mattress pad according to the switch instruction; and instruct the temperature PID controller to perform heating work according to the temperature control instruction.

[0037] By introducing a client to establish a remote communication link with the electric heating mattress pad, the present invention effectively solves the safety hazard problem of traditional electric blankets. The remote control function allows users to turn off the device through the client when they leave home, reducing the safety risks caused by forgetting to turn off the device. This design significantly improves the safety of the electric heating mattress pad, making it more in line with the safety requirements of modern families for heating equipment.

[0038] Furthermore, due to reasons such as long-term power-on, traditional electric blankets are prone to overheating and even fires. The temperature PID controller of the present invention can precisely control the temperature of the electric heating mattress pad, avoiding safety accidents caused by excessive temperature. Description of the Drawings

[0039] Figure 1 is a three-dimensional structure schematic diagram of a control system for an electric heating mattress pad of the present invention;

[0040] Figure 2 is a layer structure schematic diagram of a control system for an electric heating mattress pad of the present invention;

[0041] Figure 3 is a principle block diagram of the temperature PID controller and the current PID controller of the present invention.

[0042] In the figure:

[0043] 10 - leather layer, 20 - aluminum foil flame retardant cloth layer, 30 - heating component, 40 - carbon fiber cloth layer, 50 - sponge layer, 60 - chemical fiber cotton layer, 70 - waterproof bottom cloth layer, 80 - edge band. Detailed Embodiments

[0044] To facilitate the understanding of the present invention, the technical solutions and advantages of the invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. For the mechanisms or methods not elaborated in the present invention, reference can be made to the prior art. The specific structure and characteristics of the present invention will be described by way of example below, which should not constitute any limitation to the present invention. At the same time, for any one of the technical features mentioned below (including those implied or disclosed), as well as any one of the technical features directly shown or implied in the drawings, any combination or deletion can be continued among these technical features, so as to form more other embodiments that may not be directly or indirectly mentioned in the present invention. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0045] With the increasing demand for winter heating, electric blankets, as a convenient and economical heating device, are widely used in households. However, traditional electric blankets have many potential safety hazards and functional limitations, and the safety of electric blankets has always been a key concern for the public. Since their long-term power-on may lead to overheating, short circuits, and even fires, there have been many fire accidents caused by improper use of electric blankets in recent years.

[0046] Because the heating principle of an electric blanket is to generate heat through the energization of a resistance wire, once used improperly, such as long-term power-on, it is easy to cause excessive temperature and extremely likely to trigger a fire; or due to the negligence of the user, it is often easy to forget to turn it off and cause an accident. To sum up, optimizing the functional technology of electric heating pads is not only driven by market demand but also an inevitable trend of technological development.

[0047] Therefore, due to the limitations of the heating principle, traditional electric blankets are prone to problems such as overheating and short circuits. The present invention introduces a temperature PID controller, which can monitor and precisely adjust the temperature of the electric heating pad in real time. When the temperature reaches the set value, the PID controller will automatically adjust the heating power to maintain the stability of the temperature, thus avoiding the overheating problem caused by long-term power-on. On the other hand, by establishing a wireless communication link between the client and the main controller of the electric heating pad, the remote control function is realized. Users can send a remote authentication request through the client. After authentication, the main controller can receive and execute the on / off instruction and temperature control instruction of the client. This design not only facilitates users to control the electric heating pad anytime and anywhere but also enables the device to be turned off in time when the user leaves home, reducing safety accidents caused by forgetting to turn it off.

[0048] Embodiment 1

[0049] Such as Figure 1 And Figure 2As shown, it is the electric heating mattress applied by the control system of the present invention. Among them, the electric heating mattress includes a main controller and a mattress body. The main controller is connected to the heating component in the mattress body, and the main controller is powered by connecting to the mains through a connector.

[0050] In a specific implementation, the main controller includes an insulating housing and a control circuit built in the insulating housing. The temperature PID controller, the current PID controller, and the drive circuit are all arranged in the housing. The current PID controller is respectively connected to the temperature PID controller and the drive circuit, and the drive circuit is connected to the heating component of the electric heating mattress. Among them, the current PID controller outputs a drive signal according to the control quantity output by the temperature PID controller, drives the drive current based on the drive signal, and further controls the heating component.

[0051] The main controller of the electric heating mattress realizes the intelligent control of the heating component through the integrated temperature PID controller, current PID controller, and drive circuit. The temperature PID controller monitors the temperature of the mattress surface in real time through a temperature sensor, compares the actual temperature with the preset target temperature, and calculates the deviation value. According to the deviation value, the temperature PID controller outputs a control quantity signal, and this signal is transmitted to the current PID controller. The current PID controller further adjusts and outputs a drive signal according to the received control quantity signal, and the drive signal controls the magnitude of the current flowing through the heating component through the drive circuit. By precisely adjusting the current, the heating component can be heated according to the preset temperature curve, thereby realizing efficient, safe, and precise temperature control. This control method not only ensures the stability of the temperature, but also improves the safety and reliability of the system through the precise control of the current.

[0052] The present invention adopts an electric heating mattress in which the current PID controller and the temperature PID controller work together. The current PID controller can precisely adjust the current according to the output signal of the temperature PID controller to ensure that the power output of the heating component matches the temperature demand. Secondly, through the precise control of the current, the system can effectively avoid potential safety hazards caused by current overload or short circuit, improving the safety of the product. In addition, this design also optimizes the utilization efficiency of electric energy, reduces energy consumption, and prolongs the service life of the heating component.

[0053] Regarding the mattress body of this embodiment, the mattress body includes a leather layer, an aluminum foil flame retardant cloth layer, a heating component, a carbon fiber cloth layer, a chemical fiber cotton layer, and a waterproof bottom cloth layer which are stacked in sequence from top to bottom.

[0054] The main body of the electric heating mattress in this embodiment is composed of multiple layers, which are, from top to bottom, a leather layer 10, an aluminum foil flame-retardant cloth layer 20, a heating component 30, a carbon fiber cloth layer 40, a chemical fiber cotton layer 60, and a waterproof bottom cloth layer 70. The leather layer uses a soft and skin-friendly leather material to provide a comfortable contact feeling; the aluminum foil flame-retardant cloth layer is used to reflect heat and retard fire, improving safety; the heating component is composed of carbon fiber heating wires, which are evenly laid in the main body of the mattress, and the heating function is realized through the current adjustment of the main controller; the carbon fiber cloth layer serves as a heat insulation layer to further evenly conduct heat and prevent heat dissipation; the chemical fiber cotton layer provides soft support and enhances the comfort of the mattress; the waterproof bottom cloth layer prevents liquid penetration and protects the mattress from moisture. Each layer is fixed through stitching or bonding processes to form an integrated structure. The main controller is connected to the heating component through a wire, and the user can adjust the temperature setting to meet personalized heating needs.

[0055] In a preferred implementation, a sponge layer 50 is further provided between the carbon fiber cloth layer and the chemical fiber cotton layer. The sponge layer is located between the carbon fiber cloth layer and the chemical fiber cotton layer, providing additional softness and buffering effect, and enhancing the comfort of the user.

[0056] In a preferred implementation manner, the main body of the mattress further has a binding strip 80, which is arranged around the outer peripheral wall of the main body of the mattress. The binding strip surrounds the entire main body of the mattress, playing the role of fixing each layer structure, enhancing the edge strength and aesthetics.

[0057] Embodiment Two

[0058] Embodiment Two provides a preferred implementation manner of the control system of an electric heating mattress. The specific structure of the electric heating mattress in Embodiment Two is exactly the same as that in Embodiment One. The control system described in Embodiment Two includes an electric heating mattress and a client. The client establishes a wireless communication link with the main controller of the electric heating mattress, and the client is used to provide a man-machine interaction access interface. The electric heating mattress has a main controller and a temperature PID controller, and the main controller is connected to the temperature PID controller.

[0059] In Embodiment Two, the client can be an application program deployed on the user's mobile terminal, such as an APP on a smart phone or a tablet computer. This application program establishes a wireless communication link with the main controller of the electric heating mattress through wireless communication technologies (such as 4G, 5G and other mobile communication technologies) to realize remote control and man-machine interaction functions.

[0060] In a specific implementation, the main functions of the client include:

[0061] Temperature adjustment: The user can set the target temperature through the input box, and the application program sends the instruction to the main controller, and the main controller adjusts the power of the heating component through the temperature PID controller.

[0062] Power on / off and scheduled power on / off: Users can set the time to turn on or off, or schedule the turning on or off of the electric heating mattress. The application program realizes the timing function through the main controller.

[0063] Real-time temperature display: The client receives the real-time temperature data sent by the main controller and displays the current mattress temperature on the interface.

[0064] Safety and alarm function: When the electric heating mattress detects an abnormal situation (such as overheating or malfunction), the main controller sends an alarm signal to the client, and the application program reminds the user through a pop-up window or notification.

[0065] Figure 3 This is the principle block diagram of the temperature PID controller and current PID controller of the present invention. This method can be executed by the main controller of the electric heating mattress. Among them, the main controller of the electric heating mattress is configured to execute the following remote control steps:

[0066] S100: Obtain the remote authentication request sent by the client.

[0067] S200: When the remote authentication request is authenticated, receive the switch instruction and / or temperature control instruction from the client;

[0068] S300: Open or close the electric heating mattress according to the switch instruction;

[0069] S400: According to the temperature control instruction, instruct the temperature PID controller to perform heating work.

[0070] Specifically, the following detailed description is given to the remote control steps in the second embodiment:

[0071] S100: Obtain the remote authentication request sent by the client.

[0072] In a specific implementation, the user sends a remote authentication request to the client through the application program of the client.

[0073] S200: When the remote authentication request is authenticated, receive the switch instruction and / or temperature control instruction from the client.

[0074] In a specific implementation, after the main controller verifies the user identity information, it determines whether the authentication is passed. If the authentication fails, the main controller sends a feedback message of authentication failure to the client. If the authentication is passed, the main controller enters the instruction receiving mode, listens for the switch instruction (such as "turn on" or "turn off") and temperature control instruction (such as "set the temperature to 35°C") sent by the client. Subsequently, the main controller performs instruction parsing, receives and parses the instructions sent by the client, and converts them into internal executable control signals.

[0075] In a specific implementation, the authentication of the remote authentication request between the client and the main controller specifically includes:

[0076] S210: When the client queries the target electric heating blanket, the client generates a security token.

[0077] It can be understood that when the client detects the target electric heating blanket, a unique security token (Token) is generated. The security token can be a randomly generated string or an encrypted hash value based on a timestamp and a device identifier.

[0078] In a specific implementation, the client uses a security algorithm (such as SHA-256 or HMAC) in combination with the device identifier and the timestamp to generate the security token, ensuring the uniqueness and security of the token.

[0079] It can be understood that the input values in the security token generation function include an input parameter set, and the input parameter set at least includes an encrypted hash value based on a timestamp and a device identifier. The client obtains the timestamp of the current time (accurate to milliseconds) to ensure the uniqueness of each generated token. The client obtains the device identifier of the electric heating blanket (such as the MAC address or unique ID of the device). The timestamp and the device identifier are combined into an input parameter set. An encrypted hash algorithm (such as SHA-256 or HMAC-SHA-256) is used to calculate the input parameter set to generate a security token with a fixed length.

[0080] S220: The client sends a remote authentication request to the main controller of the electric heating blanket, and the remote authentication request includes the security token.

[0081] In a specific implementation, the client encapsulates the generated security token into the authentication request, and the request format is usually JSON, including the device identifier, the timestamp, and the security token.

[0082] S230: The main controller receives the remote authentication request from the client, generates a local security token, and compares it with the received security token.

[0083] In a specific implementation, the controller receives the authentication request sent by the client through its wireless communication module and decrypts the request content. The main controller extracts the timestamp, the device identifier, and the security token from the authentication request. Then local token generation: The main controller uses the same encrypted hash algorithm and input parameter set (timestamp and device identifier), in combination with a preset shared key, to generate a local security token. The main controller compares the received security token with the locally generated security token to verify the matching of the two.

[0084] S240: When the received security token matches the generated local security token, the authentication is successful.

[0085] S300: Open or close the electric heating mattress according to the switch instruction.

[0086] In a specific implementation, the switch control logic is as follows: If the "turn on" instruction is received, the main controller activates the power circuit of the heating component to start the heating process. If the "turn off" instruction is received, the main controller cuts off the power of the heating component to stop the heating.

[0087] Status feedback: The main controller feeds back the current switch state ("turned on" or "turned off") to the client through the wireless communication link, and the client displays the current state on the interface.

[0088] S400: According to the temperature control instruction, instruct the temperature PID controller to perform heating work.

[0089] In this technology, the main controller receives the temperature control instruction (such as the target temperature value) sent by the client. The main controller transfers the target temperature value to the temperature PID controller. The temperature PID controller calculates the deviation value based on the target temperature value and the current temperature fed back by the real-time temperature sensor, and outputs the corresponding control quantity to the current PID controller to finally adjust the power of the heating component.

[0090] In a specific implementation, the electric heating mattress further has a temperature sensor, and the temperature sensor is connected to the main controller; wherein, the main controller of the electric heating mattress is configured to perform the following temperature control steps:

[0091] S410: Obtain the set temperature r(k) in the temperature control instruction and the actual temperature y(k) collected by the temperature sensor.

[0092] It can be understood that the set temperature r(k): This is the desired temperature value input by the user through the client. The actual temperature y(k): This is the actual temperature value of the electric heating mattress measured by the temperature sensor.

[0093] S420: According to the set temperature r(k) and the actual temperature y(k), calculate the temperature deviation e(k)=r(k)-y(k).

[0094] S430: Perform differential processing on the set temperature r(k) to obtain the temperature change rate dr(k) / dt.

[0095] S440: Input the temperature deviation e(k) and the temperature change rate dr(k) / dt into the fuzzy controller for fuzzy processing to obtain the adjustment value ΔK of the PID parameters p , ΔK i , ΔK d .

[0096] In a specific implementation, the electric heating mattress further has a fuzzy controller, and the fuzzy controller is used to perform fuzzy processing on the temperature deviation e(k) and the temperature change rate dr(k) / dt, specifically including the following steps:

[0097] S441: Convert the temperature deviation e(k) and the temperature change rate dr(k) / dt into fuzzy sets.

[0098] S442: Perform fuzzy inference on the fuzzy sets according to a preset fuzzy rule base to obtain fuzzy inference data.

[0099] S443: Use a defuzzification algorithm to defuzzify the fuzzy inference data to obtain PID parameters ΔK p , ΔK i , ΔK d .

[0100] In a specific implementation manner, the processing steps of the fuzzy controller include:

[0101] (1) Fuzzification:

[0102] Input variables: Convert the temperature deviation e(k) and the temperature change rate dr(k) / dt into fuzzy sets.

[0103] Fuzzy sets: Define fuzzy sets. In one example, for example, "Negative Big" (NB), "Negative Small" (NS), "Zero" (Z), "Positive Small" (PS), "Positive Big" (PB), etc.

[0104] Membership function: Define a membership function for each fuzzy set, usually using triangular, trapezoidal or Gaussian functions.

[0105] (2) Fuzzy Inference:

[0106] Rule Base: Define fuzzy control rules. For example: If e(k) is NB and dr(k) / dt is NB, then ΔKp is PB, ΔKi is PB, and ΔKd is PB.

[0107] Inference method: Use a forward inference method (such as Mamdani or Sugeno method) to perform fuzzy inference. According to the input fuzzy sets and the rule base, calculate the output fuzzy set of each rule.

[0108] (3) Defuzzification:

[0109] Defuzzification method: Convert the fuzzy output obtained by inference into an accurate numerical output. In a specific implementation, use the center of gravity method (COG) to calculate the accurate output, including

[0110] Center of Gravity (COG) method: Calculate the geometric center of the fuzzy set. Assume that the membership function of PB is μPB(x) = (x - 10) / 20 (where x ranges from 10 to 30). Calculate the exact output of ΔKp:

[0111] In the formula, ΔKp represents the adjustment amount of the proportional gain. xi represents the value of the output variable, that is, in the fuzzy set output by the fuzzy controller, each possible output value. μi represents the corresponding membership degree, that is, the membership degree of each output value in the fuzzy set, reflecting the credibility or importance of this output value. ∑ixi·μi represents the sum of the products of all possible output values and their membership degrees, used to calculate the center of gravity of the fuzzy set. ∑i μi represents the sum of all membership degrees, used to normalize the center of gravity calculation result to ensure that the output is a definite value.

[0112] Similarly, calculate ΔKi and ΔKd.

[0113] S450: Input the adjusted PID parameters ΔK p , ΔK i , ΔK d into the temperature PID controller, and the temperature PID controller outputs a control quantity.

[0114] Subsequently, use the output of the temperature PID controller as the input of the current PID controller. The current PID controller adjusts its parameters according to the input and outputs a drive signal. The output of the current PID controller drives the drive circuit, thereby controlling the heating component of the main body of the quilt pad.

[0115] In this field, the implementation of the current PID controller generally includes the following steps:

[0116] First, it is necessary to calculate the error of the current loop, that is, the difference between the desired current and the actual current. This is usually obtained by subtracting the actual current value from the desired current value. According to the proportional parameter (Kp), multiply the error by a proportional gain to obtain the output of the proportional term. The proportional term directly reflects the magnitude of the error, and the control output is proportional to the error. According to the integral parameter (Ki), accumulate the error and multiply it by an integral gain to obtain the output of the integral term. The integral term can eliminate the static error and gradually reduce the steady-state error of the system. According to the differential parameter (Kd), calculate the change rate of the error and multiply it by a differential gain to obtain the output of the differential term. The differential term can predict the future change trend of the error and is used to suppress the overshoot and oscillation of the system.

[0117] Finally, add the outputs of the proportional term, integral term, and differential term to obtain the final control output. This control output can be used as the control signal of the current loop to adjust the current to the desired value.

[0118] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control system for an electric heating mattress, characterized in that, The control system includes an electric heating blanket and a client; The client establishes a wireless communication link with the main controller of the electric heating blanket, and the client is used to provide a human-computer interaction access interface; The electric heating blanket has a main controller and a temperature PID controller, and the main controller is connected to the temperature PID controller; wherein, the main controller of the electric heating blanket is configured to execute the following remote control steps: Obtain a remote authentication request sent by the client; When the remote authentication request is authenticated, receive the switch instruction and / or temperature control instruction of the client; Open or close the electric heating blanket according to the switch instruction; According to the temperature control instruction, instruct the temperature PID controller to perform heating work.

2. The control system of an electric heating mattress according to claim 1, characterized in that, The electric heating blanket also has a temperature sensor, and the temperature sensor is connected to the main controller; wherein, the main controller of the electric heating blanket is configured to execute the following temperature control steps: Obtain the set temperature r(k) in the temperature control instruction and the actual temperature y(k) collected by the temperature sensor; Calculate the temperature deviation e(k) according to the set temperature r(k) and the actual temperature y(k); Perform differential processing on the set temperature r(k) to obtain the temperature change rate dr(k) / dt; The temperature deviation e(k) and the temperature change rate dr(k) / dt are input into a fuzzy controller for fuzzy processing to obtain the adjustment values ΔK p , ΔK i , ΔK d ; The adjusted PID parameters ΔK p , ΔK i , ΔK d are input into the temperature PID controller, and the temperature PID controller outputs a control quantity.

3. The control system of an electric heating mattress according to claim 2, characterized in that, The electric heating blanket also has a fuzzy controller, and the fuzzy controller is used to perform fuzzy processing on the temperature deviation e(k) and the temperature change rate dr(k) / dt, specifically including the following steps: Convert the temperature deviation e(k) and the temperature change rate dr(k) / dt into fuzzy sets; Perform fuzzy inference on the fuzzy sets according to a preset fuzzy rule base to obtain fuzzy inference data; Defuzzify the fuzzy inference data using a defuzzification algorithm to obtain the PID parameters ΔK p , ΔK i , ΔK d .

4. The control system of an electric heating blanket according to claim 3, characterized in that: The electric heating blanket also has a current PID controller and a drive circuit. The current PID controller is respectively connected to the temperature PID controller and the drive circuit, and the drive circuit is connected to the heating component of the electric heating blanket; Wherein, the current PID controller outputs a drive signal according to the control quantity output by the temperature PID controller, drives the drive circuit based on the drive signal, and further controls the heating component.

5. The control system of an electric heating mattress pad according to claim 1, characterized in that, The remote authentication request authentication between the client and the main controller specifically includes: When the client queries the target electric heating blanket, the client generates a security token; The client sends a remote authentication request to the main controller of the electric heating blanket, and the remote authentication request includes the security token; The main controller receives the remote authentication request from the client, generates a local security token, and compares it with the received security token; When the received security token matches the generated local security token, the authentication is successful.

6. The control system of an electric heating blanket according to claim 5, characterized in that: The input values in the security token generation function include an input parameter set, and the input parameter set at least includes an encrypted hash value based on a timestamp and a device identifier.

7. The control system of an electric heating blanket according to claim 3, characterized in that: The main controller includes a housing and a control circuit built into the housing, and the temperature PID controller, the current PID controller, and the drive circuit are all arranged in the housing.

8. A control system for an electric heating mattress pad according to any one of claims 1 to 7, characterized in that The electric heating mattress further includes a mattress body, and the mattress body includes a leather layer, an aluminum foil flame retardant cloth layer, a heating component, a carbon fiber cloth layer, a chemical fiber cotton layer, and a waterproof bottom cloth layer which are stacked in sequence from top to bottom.

9. The control system of an electric heating mattress according to claim 8, wherein: A sponge layer is further arranged between the carbon fiber cloth layer and the chemical fiber cotton layer.

10. The control system of an electric heating mattress according to claim 8, wherein: The mattress body further has a binding strip, and the binding strip is arranged around the outer peripheral wall of the mattress body.

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