A coupler and control system including the same

Abstract

The utility model provides a kind of coupler and the control system including it, coupler includes first connector and second connector.First connector includes first shell, wire harness and multiple terminal blocks.First shell is equipped with first installation cavity, at least part wire harness is arranged in first installation cavity, wire harness includes temperature sensing wire, resistance sensing wire and power line, multiple terminal blocks are connected with temperature sensing wire, resistance sensing wire and power line respectively.Different models of electric blanket, the resistance value of resistance sensing wire detected is different, so in the case where coupler model is same, the model of electric blanket is determined by detecting the resistance value between power line and resistance sensing wire, to avoid the problem that electric blanket and controller are wrongly matched when coupler of same model and controller are matched, to avoid the model of electric blanket cannot be identified by controller, cause the problem that electric blanket is controlled wrongly, and further cause dangerous problem.

Description

Technical Field

[0001] This utility model belongs to the technical field of electronic connectors, and particularly relates to a coupler and a control system including the coupler. Background Technology

[0002] Currently, different models of electric blankets use different types of couplers to match the blanket body with the controller. This results in the need for multiple different couplers to connect the blanket body and the controller, increasing mold costs. Couplers of the same type are not significantly different, and when different models of electric blankets are matched with the same type of coupler to the controller, mismatches are easily made. The controller may fail to recognize the blanket body, leading to incorrect control of the electric blanket and potentially causing danger. Utility Model Content

[0003] The technical objective of this invention is to provide a coupler that solves the problem of incorrect matching between the blanket body and the controller when matching different models of electric blankets with the same type of coupler.

[0004] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a coupler, the coupler including a first connector and a second connector that are detachably connected, the second connector being connected to the electric blanket; The first connector includes: A first housing, wherein the first housing is provided with a first mounting cavity; The wiring harness, at least a portion of which is disposed within the first mounting cavity, includes a temperature sensing wire, a resistance sensing wire, and a power supply wire. The temperature sensing wire, the resistance sensing wire, and the power supply wire are combined into a cable bundle. The temperature sensing wire is used to connect to the temperature sensor of the electric blanket, and the power supply wire is used to supply power to the electric blanket. Multiple terminals are connected to the temperature sensing line, the resistance sensing line, and the power supply line, respectively. The second connector includes: The second housing has a second mounting cavity; A heating wire, at least a portion of which is disposed within the second mounting cavity, and which is connected to the power cord; Multiple pin terminals, wherein the pin terminals are connected to the wiring terminals; Among them, the resistance values ​​detected between the power cord and the resistance sensing line are different for different models of the electric blanket.

[0005] Furthermore, the inner peripheral wall of the terminal block is provided with toothed protrusions or recesses.

[0006] Furthermore, the power cord includes a positive power cord and a negative power cord, and the plurality of terminals include a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal is connected to the positive power cord, the second terminal is connected to the temperature sensing line, the third terminal is connected to the resistance sensing line, and the fourth terminal is connected to the negative power cord. The heating wire includes a positive heating wire and a negative heating wire. The plurality of pin terminals include a first pin terminal, a second pin terminal, a third pin terminal, and a fourth pin terminal. The first pin terminal is connected to the positive heating wire and the first terminal block, the second pin terminal is connected to the second terminal block, the third pin terminal is connected to the third terminal block, and the fourth pin terminal is connected to the negative heating wire and the fourth terminal block.

[0007] Furthermore, the first housing includes a detachably connected upper housing and a lower housing. The lower housing is provided with the first mounting cavity, which is provided with a plurality of first partitions. The plurality of first partitions are arranged sequentially to form a plurality of first sub-slots between the plurality of first partitions. The temperature sensing line, the resistance sensing line, the positive power supply line, and the negative power supply line are respectively disposed in the plurality of first sub-slots.

[0008] Furthermore, the first mounting cavity is provided with a plurality of second partitions, which are arranged sequentially to form a plurality of second sub-slots between the plurality of second partitions. The first wiring terminal, the second wiring terminal, the third wiring terminal, and the fourth wiring terminal are respectively disposed in the plurality of second sub-slots. The heating wire is covered with a protective sleeve.

[0009] Furthermore, the first housing is provided with a perforation, through which the wire harness extends from the first mounting cavity to the outside of the first housing.

[0010] Furthermore, the wire harness is provided with an anti-slip sleeve, which is located inside the perforation.

[0011] Secondly, this utility model provides a control system applied to an electric blanket. The control system includes a coupler as described in any of the above claims and a controller, wherein the coupler is connected to the controller.

[0012] Furthermore, the controller includes a control unit, which is connected to the temperature sensing line, the resistance sensing line, and the power line respectively. The control unit acquires the temperature data from the temperature sensor of the electric blanket, controls the power of the electric blanket based on the temperature data, and determines the model of the electric blanket based on the detected resistance value between the power line and the resistance sensing line.

[0013] Furthermore, the controller includes a digital display unit, a key control unit, a voltage conversion unit, and a thyristor control unit connected to the control unit. The voltage conversion unit is connected to the mains power, and the thyristor control unit is used to regulate and control the working power of the electric blanket.

[0014] This invention discloses a coupler comprising a detachably connected first connector and a second connector, the second connector being connected to an electric blanket. The first connector includes a first housing, a wire harness, and multiple terminals. The first housing has a first mounting cavity, within which at least a portion of the wire harness is disposed. The wire harness includes a temperature sensing wire, a resistance sensing wire, and a power supply wire, all bundled together. The temperature sensing wire connects to the temperature sensor of the electric blanket, and the power supply wire supplies power to the electric blanket. The multiple terminals are respectively connected to the temperature sensing wire, the resistance sensing wire, and the power supply wire. Different models of electric blankets detect different resistance values ​​between the power supply wire and the resistance sensing wire. Therefore, even with the same coupler model, the electric blanket model is determined by detecting the resistance value between the power supply wire and the resistance sensing wire. This avoids the problem of incorrect matching between electric blankets and controllers when using couplers of the same model, preventing the controller from failing to recognize the electric blanket model and causing erroneous control of the electric blanket, which could lead to dangerous situations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the coupler in an embodiment of this utility model; Figure 2 This is a schematic diagram of the overall structure of the first connector in an embodiment of this utility model; Figure 3 This is a schematic diagram of the overall structure of the first connector from another perspective in an embodiment of this utility model; Figure 4 This is a schematic diagram of the internal structure of the first connector in an embodiment of this utility model; Figure 5 This is a schematic diagram of the overall structure of the second connector in an embodiment of this utility model; Figure 6 This is a schematic diagram of the overall structure of the second connector from another perspective in an embodiment of this utility model; Figure 7 This is a schematic diagram of the internal structure of the second connector in an embodiment of this utility model; Figure 8 This is a schematic diagram of the internal structure of the coupler in an embodiment of this utility model; Figure 9 This is a simplified structural diagram of the control system in an embodiment of this utility model.

[0016] In the accompanying drawings, the reference numerals denote: 001, first connector; 002, second connector; 1, first housing; 11, upper housing; 12, lower housing; 121, first mounting cavity; 122, first partition; 123, first sub-slot; 124, second partition; 125, second sub-slot; 13, perforation; 2, wire harness; 21, sensing wire; 211, temperature sensing wire; 212, resistance sensing wire; 22, power supply wire; 221, positive power supply wire; 222, negative power supply wire; 23, anti-slip sleeve; 31, first wiring. Terminal; 32, Second terminal; 33, Third terminal; 34, Fourth terminal; 4, Second housing; 41, Second mounting cavity; 5, Heating wire; 51, Heating positive wire; 52, Heating negative wire; 53, Protective sleeve; 61, First pin terminal; 62, Second pin terminal; 63, Third pin terminal; 64, Fourth pin terminal; 100, Controller; 101, Control unit; 102, Digital display unit; 103, Key control unit; 104, Voltage conversion unit; 105, Thyristor control unit. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Currently, different models of electric blankets use different types of couplers to match the blanket body with the controller. This results in the need for multiple different couplers to connect the blanket body and the controller, increasing mold costs. Couplers of the same type are not significantly different, and when different models of electric blankets are matched with the same type of coupler to the controller, mismatches are easily made. The controller may not be able to recognize the electric blanket model, leading to incorrect control of the electric blanket and potentially causing danger.

[0021] To address the aforementioned technical problems, this utility model proposes a coupler.

[0022] As attached Figure 1 The diagram shown is a schematic representation of the overall structure of the coupler in an embodiment of this utility model; as shown in the attached diagram. Figure 2 The diagram shown is a schematic representation of the overall structure of the first connector 001 in an embodiment of this utility model; as shown in the attached diagram. Figure 3 The image shown is a schematic diagram of the overall structure of the first connector 001 from another perspective in an embodiment of this utility model; as shown in the attached diagram. Figure 4 The diagram shown is a schematic representation of the internal structure of the first connector 001 in an embodiment of this utility model; as shown in the attached diagram. Figure 5 The diagram shown is a schematic representation of the overall structure of the second connector 002 in an embodiment of this utility model; as shown in the attached diagram. Figure 6 The image shown is a schematic diagram of the overall structure of the second connector 002 from another perspective in an embodiment of this utility model; as shown in the attached diagram. Figure 7 The diagram shown is a schematic representation of the internal structure of the second connector 002 in an embodiment of this utility model. (See attached diagram.) Figure 1-7 It is known that the coupler includes a detachably connected first connector 001 and a second connector 002, with the second connector 002 connected to the electric blanket. The first connector 001 includes a first housing 1, a wire harness 2, and multiple terminals. The second connector 002 includes a second housing 4, a heating wire 5, and multiple pin terminals.

[0023] As attached Figure 2-4As shown, the first housing 1 has a first mounting cavity 121, and at least a portion of the wiring harness 2 is disposed within the first mounting cavity 121. The wiring harness 2 includes a sensing wire 21 and a power wire 22. The sensing wire 21 includes a temperature sensing wire 211 and a resistance sensing wire 212. The temperature sensing wire 211, the resistance sensing wire 212, and the power wire 22 are bundled into a cable. The temperature sensing wire 211 is used to connect to the temperature sensor of the electric blanket, and the power wire 22 is used to supply power to the electric blanket. The sensing wire 211 is used for communication, and the temperature sensing wire 211 is used to transmit the temperature information of the electric blanket detected by the temperature sensor to the controller 100 connected to the coupler, so that the controller 100 can control the operating power of the electric blanket. Exemplarily, the controller 100 controls the current of the power wire 22 to achieve the purpose of controlling the operating power of the electric blanket. The coupler has a resistor, and the resistance sensing wire is used to connect to the resistor.

[0024] Multiple terminals are connected to the temperature sensing wire 211, the resistance sensing wire 212, and the power supply wire 22, respectively. The end of the terminal opposite to the sensing wire 21 is connected to the pin terminal, so that the sensing wire 21 is connected to the controller 100. The end of the terminal opposite to the power supply wire 22 is connected to the pin terminal, so that the power supply wire 22 is connected to the controller 100. The controller 100 is connected to the mains power, thereby connecting the power supply wire 22 to the mains power to supply power to the electric blanket.

[0025] As attached Figure 5-7 As shown, the second housing 4 is provided with a second mounting cavity 41, at least part of the heating wire 5 is disposed in the second mounting cavity 41, and the heating wire 5 is connected to the power cord 22, and the pin terminal is connected to the wiring terminal, that is, the first connector 001 and the second connector 002 are connected to realize the connection of the electric blanket to the external power source and realize the power supply of the electric blanket.

[0026] Different models of electric blankets have different resistance values ​​detected between the power cord 22 and the resistance sensing line 212. This means that the resistance of the heater inside different models of electric blankets is different, or the resistance of the power cord 22 of the same model coupler used in different models of electric blankets is different. The detected resistance of the power cord 22 can indicate the model of the electric blanket, thus allowing the controller 100 connected to the coupler to control the operating power of the electric blanket according to the model. In this way, the controller 100 can be matched with the electric blanket, enabling the electric blanket to operate within the correct operating power range and avoiding dangers caused by incorrect control of the electric blanket. Couplers of the same model can have the same shape and size, but the material of the power cord 22 and the heating wire 5 can be the same or different.

[0027] As can be seen from the above embodiments, on the one hand, the coupler of this utility model can be applied to different models of electric blankets, and the model of the electric blanket can be determined according to the resistance of the power line 22 of the coupler, so that the controller 100 controls the working power of the electric blanket according to the model of the electric blanket, so as to prevent the danger caused by incorrect control of the electric blanket; on the other hand, different models of electric blankets can use the same model of the coupler of this utility model, and the coupler can be determined by the resistance of the power line 22 of the coupler, thereby reducing the molds used to produce different models of couplers and saving mold costs.

[0028] In some embodiments, the inner peripheral wall of the terminal block is provided with toothed protrusions (not shown) or recessed grooves (not shown). With this design, after the terminal block is connected to the pin terminal, the toothed protrusions or recessed grooves can increase the friction between the terminal block and the pin terminal, preventing the terminal block from slipping off the pin terminal.

[0029] As attached Figure 4 As shown, in some embodiments, the power line 22 includes a positive power line 221 and a negative power line 222, and multiple terminals include a first terminal 31, a second terminal 32, a third terminal 33, and a fourth terminal 34. The first terminal 31 is connected to the positive power line 221, the second terminal 32 is connected to the temperature sensing line 211, the third terminal 33 is connected to the resistance sensing line 212, and the fourth terminal 34 is connected to the negative power line 222. For example, detecting the resistance of the power line 22 can be achieved by detecting the resistance of the loop between the first terminal 31 and the fourth terminal 34.

[0030] As attached Figure 7-8 As shown, the heating wire 5 includes a positive heating wire 51 and a negative heating wire 52. The positive heating wire 51 is connected to one end of the heating wire of the electric blanket, and the negative heating wire 52 is connected to the other end of the heating wire of the electric blanket. Multiple pin terminals include a first pin terminal 61, a second pin terminal 62, a third pin terminal 63, and a fourth pin terminal 64. The first pin terminal 61 is connected to both the positive heating wire 51 and the first terminal 31. The second pin terminal 62 is connected to the second terminal 32. The third pin terminal 63 is connected to the third terminal 33. The fourth pin terminal 64 is connected to both the negative heating wire 52 and the fourth terminal 34. The end of the second pin terminal 62 facing away from the second terminal 32 is connected to the temperature sensor of the electric blanket, and the end of the third pin terminal 63 facing away from the third terminal 33 is also connected to the temperature sensor of the electric blanket.

[0031] As attached Figure 3-4As shown, in some embodiments, the first housing 1 includes a detachably connected upper housing 11 and a lower housing 12. The lower housing 12 has a first mounting cavity 121, which has a plurality of first partitions 122 arranged sequentially to form a plurality of first sub-slots 123. A temperature sensing wire 211, a resistance sensing wire 212, a positive power supply wire 221, and a negative power supply wire 222 are respectively disposed in the plurality of first sub-slots 123. The first partitions 122 can separate two adjacent wires, preventing short circuits caused by contact between the wire ends. The first sub-slots 123 can also position or fix the wires within them, preventing displacement. The wires can be a temperature sensing wire 211, a resistance sensing wire 212, a positive power supply wire 221, or a negative power supply wire 222.

[0032] In some embodiments, the first mounting cavity 121 is provided with a plurality of second partitions 124, which are arranged sequentially to form a plurality of second sub-slots 125. A first terminal 31, a second terminal 32, a third terminal 33, and a fourth terminal 34 are respectively disposed in the plurality of second sub-slots 125. The second partitions 124 can separate two adjacent terminals to prevent short circuits caused by contact between the two terminals, and the second sub-slots 125 can position or fix the terminals within them to prevent displacement. The heating wire 5 is covered with a protective sleeve 53 to protect the heating wire 5 and prevent leakage caused by exposure of the heating wire 5. The protective sleeve 53 is made of PVC.

[0033] For example, the first housing 1 and the second housing 4 are made of PC. A nylon frame is provided inside the second cavity, which can be used to fix the pin terminal and the heating wire 5. Hot melt adhesive is provided inside the second cavity to fix the pin terminal and the connection between the pin terminal and the heating wire 5. The second housing 4 is provided with connecting ears, which can be fixed to secure the second housing 4.

[0034] In some embodiments, the first housing 1 is provided with a through hole 13, through which the wire harness 2 extends from the first mounting cavity 121 to the outside of the first housing 1. The through hole 13 can fix the wire harness 2 and facilitate the connection of the wire harness 2 to the wiring terminals inside the first housing 1 and the power source outside the first housing 1.

[0035] In some embodiments, the wire harness 2 is fitted with an anti-slip sleeve 23, which is located inside the perforation 13. The anti-slip sleeve 23 can prevent the wire harness 2 from moving inside the perforation 13, thereby preventing the wire harness 2 from being damaged due to friction between the wire harness 2 and the inner wall of the perforation 13.

[0036] As attached Figure 9The diagram illustrates a control system according to an embodiment of this invention. The control system is applied to an electric blanket and includes a coupler as described in any of the above embodiments, and a controller 100. The coupler is connected to the controller 100. The controller 100 acquires the resistance value between the power supply line 22 and the resistance sensing line 212, and determines the model of the electric blanket based on this resistance value. The controller 100 controls the operating power of the electric blanket according to its model to ensure it operates within its normal power range, preventing excessive power consumption that could cause electrical fires or other hazards.

[0037] For example, after the coupler and controller 100 are connected, the overall circuit consists of an electric blanket, a coupler power line 22 resistor, a controller 100 resistor, and a grounding loop. The controller 100 can determine the resistance value of the power line 22 via ADC sampling, thereby determining the specific dimensions of the electric blanket and performing effective control. In the overall circuit, the voltage of the electric blanket is constant, the internal resistance of the controller 100 is constant, and the entire system shares a common ground. The measured resistance value of the coupler power line 22 can be calculated from the voltage difference across the resistor. Multiple control modes are preset within the controller 100 program, and the program switches based on the measured resistance value between the power line 22 and the resistance sensing line 212, thereby effectively controlling the operating power of the electric blanket.

[0038] In some embodiments, the controller 100 includes a control unit 101, which is connected to a temperature sensing line 211, a resistance sensing line 212, and a power supply line 22. The control unit 101 acquires temperature data from the temperature sensor of the electric blanket, controls the power output of the electric blanket based on the temperature data, and determines the model of the electric blanket based on the detected resistance value between the power supply line 22 and the resistance sensing line 212. Understandably, different electric blankets have different operating power. For example, when the electric blanket needs to reach a first preset temperature, the operating power of a first-model electric blanket is the first preset power, the operating power of a second-model electric blanket is the second preset power, and the operating power of a third-model electric blanket is the third preset power. The first, second, and third preset powers are not the same. Understandably, the model of the electric blanket is required to control the power supply to the electric blanket, and the operating power of the electric blanket can be changed by altering the voltage or current supplied to the electric blanket. The control module may include any suitable processing device with data processing and / or instruction execution capabilities. For example, the control unit 101 can be implemented using one or a combination of several of the following: programmable logic controller 100 (PLC), digital signal processor (DSP), field-programmable gate array (FPGA), programmable logic array (PLA), central processing unit (CPU), application-specific integrated circuit (ASIC), microcontroller unit 101 (MCU), and other types of processing units. For example, the control unit 101 can be the main control chip in the control system, i.e., the main control MCU.

[0039] In some embodiments, the controller 100 includes a digital display unit 102, a button control unit 103, a voltage conversion unit 104, and a SCR control unit 105 connected to the control unit 101. The voltage conversion unit 104 is connected to the mains power, and the SCR control unit 105 is used to regulate the operating power of the electric blanket. The digital display unit 102 is used to display the operating data of the electric blanket, such as temperature and heating time. The voltage conversion unit 104 is used to convert the mains power into an appropriate voltage for the electric blanket. The SCR unit is used to control the current of the power cord 22, thereby changing the operating power of the electric blanket. The button control unit 103 facilitates user control of the electric blanket; for example, the user can control the temperature and operating time of the electric blanket through the button control unit 103.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coupler, characterized in that, The coupler is used in an electric blanket, and the coupler includes a detachably connected first connector and a second connector, the second connector being connected to the electric blanket; The first connector includes: A first housing, wherein the first housing is provided with a first mounting cavity; The wiring harness, at least a portion of which is disposed within the first mounting cavity, includes a temperature sensing wire, a resistance sensing wire, and a power supply wire. The temperature sensing wire, the resistance sensing wire, and the power supply wire are combined into a cable bundle. The temperature sensing wire is used to connect to the temperature sensor of the electric blanket, and the power supply wire is used to supply power to the electric blanket. Multiple terminals are connected to the temperature sensing line, the resistance sensing line, and the power supply line, respectively. The second connector includes: The second housing has a second mounting cavity; A heating wire, at least a portion of which is disposed within the second mounting cavity, and which is connected to the power cord; Multiple pin terminals, wherein the pin terminals are connected to the wiring terminals; Among them, the resistance values ​​detected between the power cord and the resistance sensing line are different for different models of the electric blanket.

2. The coupler according to claim 1, characterized in that, The inner peripheral wall of the terminal block is provided with tooth-shaped protrusions or recesses.

3. The coupler according to claim 1, characterized in that, The power cord includes a positive power cord and a negative power cord. The plurality of terminals include a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal is connected to the positive power cord, the second terminal is connected to the temperature sensing line, the third terminal is connected to the resistance sensing line, and the fourth terminal is connected to the negative power cord. The heating wire includes a positive heating wire and a negative heating wire. The plurality of pin terminals include a first pin terminal, a second pin terminal, a third pin terminal, and a fourth pin terminal. The first pin terminal is connected to the positive heating wire and the first terminal block, the second pin terminal is connected to the second terminal block, the third pin terminal is connected to the third terminal block, and the fourth pin terminal is connected to the negative heating wire and the fourth terminal block.

4. The coupler according to claim 3, characterized in that, The first housing includes a detachably connected upper housing and a lower housing. The lower housing is provided with a first mounting cavity. The first mounting cavity is provided with a plurality of first partitions. The plurality of first partitions are arranged in sequence to form a plurality of first sub-slots between the plurality of first partitions. The temperature sensing line, the resistance sensing line, the positive power supply line, and the negative power supply line are respectively disposed in the plurality of first sub-slots.

5. The coupler according to claim 4, characterized in that, The first mounting cavity is provided with a plurality of second partitions, which are arranged in sequence to form a plurality of second sub-slots between the plurality of second partitions. The first terminal, the second terminal, the third terminal, and the fourth terminal are respectively disposed in the plurality of second sub-slots. The heating wire is covered with a protective sleeve.

6. The coupler according to claim 1, characterized in that, The first housing has a perforation, through which the wire harness extends from the first mounting cavity to the outside of the first housing.

7. The coupler according to claim 6, characterized in that, The wire harness is provided with an anti-slip sleeve, which is located inside the perforation.

8. A control system, characterized in that, The control system is applied to an electric blanket, and the control system includes a coupler as described in any one of claims 1-7 and a controller, wherein the coupler is connected to the controller.

9. The control system according to claim 8, characterized in that, The controller includes a control unit, which is connected to the temperature sensing line, the resistance sensing line, and the power line respectively. The control unit acquires the temperature data from the temperature sensor of the electric blanket, controls the power of the electric blanket based on the temperature data, and determines the model of the electric blanket based on the detected resistance value between the power line and the resistance sensing line.

10. The control system according to claim 9, characterized in that, The controller includes a digital display unit, a key control unit, a voltage conversion unit, and a thyristor control unit connected to the control unit. The voltage conversion unit is connected to the mains power, and the thyristor control unit is used to regulate the working power of the electric blanket.

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