Convenient electric blanket

Abstract

The present invention relates to an easy-to-use electric blanket, comprising an electric blanket body and a remote controller, wherein the electric blanket body comprises a first wireless module, a heating wire, a power input circuit for power supply, and a first main control circuit for wirelessly connecting to a mobile terminal, wherein the first main control circuit is connected to the heating wire; the remote controller comprises a second main control circuit and a first function key circuit connected to the second main control circuit, a display circuit, a second wireless module, and a second power input circuit for power supply, wherein the electric blanket body and the remote controller communicate via the first wireless module and the second wireless module; the electric blanket body can be operated in either the remote controller or the mobile terminal, and the other can synchronously display the operated content, wherein the user can observe the state of the electric blanket at any time, thereby making the user feel comfortable and improving the convenience of use, and also ensuring the accuracy, real-timeness and safety of the operation, reducing the possibility of misoperation, and extending the service life of the electric blanket.

Description

Technical Field

[0001] The invention relates to the technical field of electric blankets, in particular to an easy-to-use electric blanket. Background Art

[0002] With the continuous development of science and technology, people's living standards are getting higher and higher, especially the requirements for living and working environment, such as the requirements for electric blankets, which are warming products. Electric blankets are products that people often use indoors. They can be placed on the ground, on a chair, or on a bed.

[0003] The existing electric blanket control mode is remote control or mobile terminal control. The existing mobile terminal can only send control signals to the electric blanket in one direction. However, when controlled by the remote control, the key operation of the remote control cannot be fed back to the mobile terminal to realize synchronous operation, which is inconvenient for the user; moreover, the operation display is not synchronized, which easily leads to misoperation of the electric blanket and shortens the service life of the electric blanket.

[0004] Therefore, in the patent application of the present invention, the applicant has carefully studied a convenient-to-use electric blanket to solve the above problems. Summary of the invention

[0005] The present invention aims to overcome the deficiencies in the above-mentioned prior art, and its main purpose is to provide an easy-to-use electric blanket, which can be operated by either a remote control or a mobile terminal, and the other can synchronously display the content of the operation. The user can observe the status of the electric blanket at any time, making the user feel comfortable, improving the convenience of use, and ensuring the accuracy, real-time and safety of the operation, reducing the possibility of misoperation, and extending the service life of the electric blanket.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme:

[0007] A convenient electric blanket comprising

[0008] An electric blanket body, the electric blanket body comprising a first wireless module, a heating wire, a power input circuit for power supply, and a first main control circuit for wirelessly connecting to a mobile terminal, the first main control circuit being connected to the heating wire;

[0009] a remote controller for remotely controlling the electric blanket body, the remote controller comprising a second main control circuit and a first function key circuit connected to the second main control circuit, a display circuit, a second wireless module and a second power input circuit for power supply, the electric blanket body and the remote controller communicating through the first wireless module and the second wireless module;

[0010] When the mobile terminal sends a control signal to the electric blanket body, the first main control circuit of the electric blanket body controls the heating wire to work, and at the same time, the first main control circuit sends the state of the electric blanket body to the remote control so that the remote control synchronously displays the state of the electric blanket;

[0011] When the remote controller sends a control signal to the electric blanket body, the first main control circuit of the electric blanket body controls the heating wire to work. At the same time, the first main control circuit sends the status to the mobile terminal so that the mobile terminal synchronously displays the status of the electric blanket.

[0012] As a preferred solution, the circuits of the first wireless module and the second wireless module are both composed of a 2.4 GHz radio frequency transceiver module of model BC5602 as the core and its peripheral circuits.

[0013] As a preferred solution, the first main control circuit is composed of a Bluetooth main control chip U1 of model BCE32F7611 and peripheral circuits.

[0014] As a preferred solution, the heating wire includes at least two heating wires, and an overheating protection circuit for overheating detection and melting is configured for each heating wire. The first main control circuit is connected to the overheating protection circuit. The electric blanket body also includes a fuse F1 for being arranged between the live wire in the AC power and the power input circuit. Each overheating protection circuit is connected to the fuse F1 to control the melting of the fuse F1.

[0015] As a preferred solution, the overheat protection circuit includes a first diode, a second diode, a first unidirectional thyristor, a first resistor, a second resistor, a third resistor, a fourth resistor and a temperature detection unit;

[0016] The first diode has a first anode and a first cathode for connecting to a power input circuit, the second diode has a second anode and a second cathode, the first anode and the second anode are connected to a temperature detection unit through a first resistor, the temperature detection unit is connected to a first main control circuit through a third resistor, and the first main control circuit is also connected to an analog ground through a fourth resistor;

[0017] The second cathode is connected to the analog ground, the T1 pole of the first unidirectional thyristor is connected to the analog ground, the control pole of the first unidirectional thyristor is connected to the first main control circuit through the second resistor, and the T2 pole of the first unidirectional thyristor is connected to the temperature detection unit.

[0018] As a preferred solution, the first resistor is a heating resistor, and the heating resistor is arranged on one side of the fuse F1 so that the heat generated by the heating resistor melts the fuse F1.

[0019] As a preferred solution, a constant temperature circuit is configured for each sub-heating wire, and the first main control circuit is connected to the corresponding sub-heating wire through the corresponding constant temperature circuit to control the working state of each sub-heating wire.

[0020] As a preferred solution, the constant temperature circuit includes a second unidirectional thyristor, a fifth resistor, a sixth resistor and a capacitor;

[0021] The control electrode of the second unidirectional thyristor is connected to the first main control circuit through the sixth resistor and the capacitor, the T1 electrode of the second unidirectional thyristor is grounded, the T1 electrode of the second unidirectional thyristor is also connected to the control electrode of the second unidirectional thyristor through the fifth resistor and the sixth resistor, and the T2 electrode of the second unidirectional thyristor is connected to the heating wire.

[0022] As a preferred solution, the electric blanket body further comprises a detection circuit, and the detection circuit comprises a resistor R2, a resistor R4, a resistor R10, a resistor R11, a resistor R12, a resistor R16, a fuse F2 and a fuse F3;

[0023] The resistor R11 has a first detection end and a second detection end for connecting to a power input circuit, the first detection end is connected to an analog ground via a resistor R12, and the first main control circuit is connected to the first detection end;

[0024] One end of the resistor R2 is connected to the digital ground, the other end of the resistor R2 is connected to the analog ground via the fuse F2, and the first main control circuit is connected to the digital ground via the resistor R10;

[0025] One end of the resistor R4 is connected to the signal ground, the other end of the resistor R4 is connected to the analog ground via the fuse F3, and the first main control circuit is connected to the signal ground via the resistor R16.

[0026] As a preferred solution, the electric blanket body further includes a second function button circuit and an indicator light circuit for displaying a working state and a fault state, and the second function button circuit and the indicator light circuit are both connected to the first main control circuit.

[0027] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, the present invention mainly wirelessly connects the mobile terminal through the first main control circuit of the electric blanket body and cooperates with the first wireless module and the second wireless module between the electric blanket body and the remote controller for wireless communication, so that any operation in the remote controller or the mobile terminal can be realized, and the other can synchronously display the content of the operation, so that the user can observe the state of the electric blanket at any time, making the user feel comfortable, improving the convenience of use, and ensuring the accuracy, real-time and safety of the operation, reducing the possibility of misoperation, and extending the service life of the electric blanket;

[0028] Secondly, the first main control circuit adopts the Bluetooth main control chip U1, which combines the main control chip and the Bluetooth chip to avoid setting up the main control chip and the Bluetooth chip separately, thereby reducing the chip usage cost and simplifying the overall circuit structure;

[0029] Furthermore, by designing the heating wire in sections, heating work at different parts can be selected according to different usage requirements, thereby improving practicality. In particular, an overheating protection circuit and a constant temperature circuit are provided for each matching heating wire, so that local overheating of the electric blanket can be detected. Moreover, the heating resistor is provided on one side of the fuse F1. When the temperature of the electric blanket body exceeds the set maximum temperature, the first main control circuit increases the current passing through the heating resistor, so that the heating resistor generates high heat and then fuses the fuse F1. The fusing method is simple, and the automatic fusing function is achieved, which has good practicality.

[0030] In addition, the overall circuit structure design is ingenious and reasonable, ensuring the stability and reliability of the electric blanket during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a control principle block diagram of an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of a first main control circuit according to an embodiment of the present invention;

[0033] Figure 3 is a schematic diagram of a first wireless module circuit according to an embodiment of the present invention;

[0034] Figure 4 is a schematic diagram of a power input circuit according to an embodiment of the present invention;

[0035] Figure 5 It is a circuit schematic diagram for controlling and detecting the heating wire according to an embodiment of the present invention (mainly showing a first overheat protection circuit, a second overheat protection circuit, a first constant temperature circuit and a second constant temperature circuit);

[0036] Figure 6 is a schematic diagram of a second main control circuit according to an embodiment of the present invention;

[0037] Figure 7 is a schematic diagram of a second wireless module circuit according to an embodiment of the present invention;

[0038] Figure 8 is a schematic diagram of a second power input circuit according to an embodiment of the present invention;

[0039] Fig. 9 is a schematic diagram of a display circuit according to an embodiment of the present invention;

[0040] Fig.10 is a schematic diagram of a first function key circuit according to an embodiment of the present invention;

[0041] Fig.11 It is a schematic diagram of the second function key circuit and indicator light circuit of an embodiment of the present invention.

[0042] Description of Figure Numbers:

[0043] 10. Electric blanket body

[0044] 11. First main control circuit 12. First wireless module

[0045] 13. Detection circuit 14. Second function button circuit

[0046] 15. Indicator light circuit

[0047] 161, first sub-heating wire 162, second sub-heating wire

[0048] 171. First overheat protection circuit 172. Second overheat protection circuit

[0049] 181, first constant temperature circuit 182, second constant temperature circuit

[0050] 191, first thermistor 192, second thermistor

[0051] 20. Remote Control

[0052] 21. Second main control circuit 22. First function key circuit

[0053] 23. Display circuit 24. Second wireless module

[0054] 30. Mobile terminal. DETAILED DESCRIPTION

[0055] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0056] like Figures 1 to 11 As shown, the present invention is an easy-to-use electric blanket, comprising an electric blanket body and a remote controller 20 for remotely controlling the electric blanket body, wherein:

[0057] The electric blanket body 10 includes a first wireless module 12, a heating wire, a detection circuit 13, a power input circuit for power supply, and a first main control circuit 11 for wirelessly connecting to a mobile terminal 30, wherein the first main control circuit 11 is connected to the heating wire; in this embodiment, as shown in FIG2 , the first main control circuit 11 is composed of a Bluetooth main control chip U1 with model number BCE32F7611 and peripheral circuits, and the Bluetooth main control chip U1 has Bluetooth main control pins 1 to 29.

[0058] The heating wire includes at least two sub-heating wires, each of which is provided with an overheating protection circuit for overheating detection and melting, and each of which is provided with a constant temperature circuit. The first main control circuit 11 is connected to the overheating protection circuit. The electric blanket body 10 also includes a fuse F1 for being arranged between the live wire in the mains and the power input circuit. Each overheating protection circuit is connected to the fuse F1 to control the melting of the fuse F1. The first main control circuit 11 is connected to the corresponding sub-heating wire through the corresponding constant temperature circuit to control the working state of each sub-heating wire.

[0059] The overheat protection circuit includes a first diode, a second diode, a first unidirectional thyristor, a first resistor, a second resistor, a third resistor, a fourth resistor and a temperature detection unit;

[0060] The first diode has a first anode and a first cathode for connecting to a power input circuit, the second diode has a second anode and a second cathode, the first anode and the second anode are connected to a temperature detection unit through a first resistor, the temperature detection unit is connected to a first main control circuit 11 through a third resistor, and the first main control circuit 11 is also connected to a simulated ground through a fourth resistor; preferably, the temperature detection unit is a thermistor. The first resistor is a heating resistor, and the heating resistor is arranged on one side of the fuse F1 so that the heat generated by the heating resistor melts the fuse F1. Of course, the heating resistor can also be arranged to be closely connected to the fuse F1, which is not limited here. If the temperature of the electric blanket body 10 exceeds the set maximum temperature or there is uncontrollable continuous heating, the Bluetooth main control pin 15 controls the first unidirectional thyristor to conduct, and at the same time, the Bluetooth main control pin 8 outputs a high current, and the high current flows back to the neutral line through the first resistor and the first diode in turn. Since the first resistor is a heating resistor, the current increases, so that the first resistor generates high heat, and then the fuse F1 is melted, realizing the active fuse function and improving user safety.

[0061] The second cathode is connected to the analog ground, the T1 pole of the first unidirectional thyristor is connected to the analog ground, the control pole of the first unidirectional thyristor is connected to the first main control circuit 11 through the second resistor, and the T2 pole of the first unidirectional thyristor is connected to the temperature detection unit. The temperature detection unit is used to detect whether the electric blanket is partially folded for use. If local overheating is detected, the electric blanket is judged to be partially folded for use. At this time, the first main control circuit 11 controls the constant temperature circuit to suspend heating the electric heating wire through the Bluetooth main control pin 8. When the local overheating reaches the safety limit of the fuse F1, the passive fusing will be activated, that is, the temperature of the local overheating will reach the temperature at which the fuse F1 is blown.

[0062] The constant temperature circuit includes a second unidirectional thyristor, a fifth resistor, a sixth resistor and a capacitor; the control electrode of the second unidirectional thyristor is connected to the first main control circuit 11 through the sixth resistor and the capacitor, the T1 electrode of the second unidirectional thyristor is grounded, the T1 electrode of the second unidirectional thyristor is also connected to the control electrode of the second unidirectional thyristor through the fifth resistor and the sixth resistor, and the T2 electrode of the second unidirectional thyristor is connected to the heating wire.

[0063] In order to improve the functionality of the electric blanket, in the present embodiment, the heating wire is arranged into two sections, and the heating wire of the electric blanket body 10 can be divided into a left and right section or a front and back section, so that the operator can control the heating wire of the corresponding section for heating as needed, thereby improving the convenience and practicality of use.

[0064] Specifically, if Figure 5 As shown, the two sub-heating wires are defined as the first sub-heating wire 161 and the second sub-heating wire 162, respectively. Correspondingly, the overheating protection circuit and the constant temperature circuit corresponding to the first sub-heating wire 161 are respectively the first overheating protection circuit 171 and the first constant temperature circuit 181, and the overheating protection circuit and the constant temperature circuit corresponding to the second sub-heating wire 162 are respectively the second overheating protection circuit 172 and the second constant temperature circuit 182. The first sub-heating wire 161 has a first interface HA1 and a first interface HA3. The first interface HA1 of the first sub-heating wire 161 is connected to the neutral line and the power input circuit. The second sub-heating wire 162 has a second interface HB1 and a second interface HB3. The first interface HA1 of the first sub-heating wire 161 is also connected to the second interface HB1 of the second sub-heating wire 162.

[0065] The first overheat protection circuit 171 includes a diode D4, a diode D3, a first unidirectional thyristor Q2, a resistor R21, a resistor R17, a resistor R39, a resistor R9 and a first thermistor 191;

[0066] The diode D4 has a first anode and a first cathode for connecting to the neutral line of the mains, the diode D3 has a second anode and a second cathode, the first anode and the second anode are connected to the HA2 pin of the first thermistor 191 through a resistor R21, the HA2 pin of the first thermistor 191 is connected to the Bluetooth main control pin 8 through a resistor R39, and the Bluetooth main control pin 8 is also connected to the analog ground through a resistor R9;

[0067] The second cathode is connected to the analog ground, the T1 pole of the first unidirectional thyristor Q2 is connected to the analog ground, the control pole of the first unidirectional thyristor Q2 is connected to the Bluetooth main control pin 15 through the resistor R17, and the T2 pole of the first unidirectional thyristor Q2 is connected to the HA2 pin of the first thermistor 191.

[0068] The first constant temperature circuit 181 includes a second unidirectional thyristor Q1, a resistor R19, a resistor R20 and a capacitor C6; the control electrode of the second unidirectional thyristor Q1 is connected to the Bluetooth main control pin 14 through the resistor R20 and the capacitor C6, the T1 electrode of the second unidirectional thyristor Q1 is connected to the digital ground, the T1 electrode of the second unidirectional thyristor Q1 is also connected to the control electrode of the second unidirectional thyristor Q1 through the resistor R19 and the resistor R20, and the T2 electrode of the second unidirectional thyristor Q1 is connected to the first interface HA3 of the first sub-heating wire 161.

[0069] The second overheat protection circuit 172 includes a diode D6, a diode D5, a first unidirectional thyristor Q4, a resistor R40, a resistor R41, a resistor R42, a resistor R13 and a second thermistor 192;

[0070] The diode D5 has a first anode and a first cathode for connecting to the neutral line of the mains, and the first cathode is also connected to the second interface HB1 of the second branch heating wire 162; the diode D6 has a second anode and a second cathode, and the first anode and the second anode are connected to the HB2 pin of the second thermistor 192 through a resistor R40, and the HB2 pin of the second thermistor 192 is connected to the Bluetooth main control pin 9 through a resistor R41, and the Bluetooth main control pin 9 is also connected to the analog ground through a resistor R13;

[0071] The second cathode is connected to the analog ground, the T1 pole of the first unidirectional thyristor Q4 is connected to the analog ground, the control pole of the first unidirectional thyristor Q4 is connected to the Bluetooth main control pin 17 through the resistor R42, and the T2 pole of the first unidirectional thyristor Q4 is connected to the HB2 pin of the second thermistor 192.

[0072] The second constant temperature circuit 182 includes a second unidirectional thyristor Q3, a resistor R37, a resistor R38 and a capacitor C10; the control electrode of the second unidirectional thyristor Q3 is connected to the Bluetooth main control pin 16 through the resistor R38 and the capacitor C10, the T1 electrode of the second unidirectional thyristor Q3 is connected to the signal ground, the T1 electrode of the second unidirectional thyristor Q3 is also connected to the control electrode of the second unidirectional thyristor Q3 through the resistor R37 and the resistor R38, and the T2 electrode of the second unidirectional thyristor Q3 is connected to the second interface HB3 of the second sub-heating wire 162.

[0073] The detection circuit 13 includes a resistor R2, a resistor R4, a resistor R10, a resistor R11, a resistor R12, a resistor R16, a fuse F2 and a fuse F3;

[0074] The resistor R11 has a first detection end and a second detection end for connecting to a power input circuit, the first detection end is connected to an analog ground via the resistor R12, and the first main control circuit 11 is connected to the first detection end;

[0075] One end of the resistor R2 is connected to the digital ground, the other end of the resistor R2 is connected to the analog ground via the fuse F2, and the first main control circuit 11 is connected to the digital ground via the resistor R10;

[0076] One end of the resistor R4 is connected to the signal ground, and the other end of the resistor R4 is connected to the analog ground via the fuse F3. The first main control circuit 11 is connected to the signal ground via the resistor R16.

[0077] It should be noted that the detection circuit 13 of the present embodiment can also monitor in real time whether an uncontrollable electrical signal occurs when the Bluetooth main control chip U1 is powered on but not used by the user (i.e., in the off state). If an uncontrollable electrical signal occurs, the Bluetooth main control pin 8 will output a high current to the first resistor. Since the first resistor is a heating resistor, the current increases, causing the first resistor to generate high heat, which then blows the fuse F1, thereby realizing an active fusing function and further improving user safety.

[0078] The electric blanket body 10 further includes a second function button circuit 14 and an indicator light circuit 15 for displaying a working state and a fault state. The second function button circuit 14 and the indicator light circuit 15 are both connected to the first main control circuit 11 .

[0079] The remote controller 20 includes a second main control circuit 21, a first function key circuit 22 connected to the second main control circuit 21, a display circuit 23, a second wireless module 24, and a second power input circuit for power supply. Figure 6 As shown, the second main control circuit 21 is composed of a main control chip U6 of model HF66F0195 and peripheral circuits. The second power input circuit can be connected to a battery and

[0080] The electric blanket body 10 and the remote controller 20 communicate via the first wireless module 12 and the second wireless module 24; in this embodiment, Figure 3 and Figure 7 As shown, the circuits of the first wireless module 12 and the second wireless module 24 are both composed of a 2.4 GHz radio frequency transceiver module of model BC5602 as the core and its peripheral circuits.

[0081] The user can press the corresponding button of the remote controller 20, and the corresponding gear adjustment signal is transmitted to the second main control circuit 21 through the first function button circuit 22. The second main control circuit 21 outputs two signals, one of which communicates with the first wireless module 12 through the second wireless module 24, and the other displays the current adjusted temperature value through the display circuit 23. When the remote controller 20 sends a control signal to the electric blanket body 10, the first main control circuit 11 of the electric blanket body 10 controls the operation of the electric heating wire. At the same time, the first main control circuit 11 sends the status to the mobile terminal 30 so that the mobile terminal 30 synchronously displays the status of the electric blanket;

[0082] When the first main control circuit 11 and the mobile terminal 30 are wirelessly connected, after the user presses the corresponding button of the mobile terminal 30 (such as a mobile phone), when the mobile terminal 30 sends a control signal toward the electric blanket body 10, the first main control circuit 11 of the electric blanket body 10 controls the operation of the heating wire. At the same time, the first main control circuit 11 sends the status of the electric blanket body 10 to the remote control 20 so that the remote control 20 synchronously displays the status of the electric blanket.

[0083] Therefore, the present invention can synchronize the remote control 20 and the mobile terminal 30 (such as a mobile phone) to display the consistency of the working status of the electric blanket. That is to say, if the electric blanket body 10 is operated using buttons through the remote control 20, it will be sent to the mobile phone synchronously, which can achieve consistency in display and control content. Conversely, if the electric blanket body 10 is operated using buttons on the mobile phone, it will be sent to the remote control 20 synchronously for display, greatly improving the convenience of use.

[0084] The key points of the design of the present invention are: it is mainly connected to the mobile terminal by wireless connection through the first main control circuit of the electric blanket body, and cooperates with the first wireless module and the second wireless module between the electric blanket body and the remote controller for wireless communication, so that any operation of the remote controller or the mobile terminal can be realized, and the other can synchronously display the content of the operation, so that the user can observe the state of the electric blanket at any time, making the user feel comfortable, improving the convenience of use, and ensuring the accuracy, real-time and safety of the operation, reducing the possibility of misoperation, and extending the service life of the electric blanket;

[0085] Secondly, the first main control circuit adopts the Bluetooth main control chip U1, which combines the main control chip and the Bluetooth chip to avoid setting up the main control chip and the Bluetooth chip separately, thereby reducing the chip usage cost and simplifying the overall circuit structure;

[0086] Furthermore, by designing the heating wire in sections, heating work at different parts can be selected according to different usage requirements, thereby improving practicality. In particular, an overheating protection circuit and a constant temperature circuit are provided for each matching heating wire, so that local overheating of the electric blanket can be detected. Moreover, the heating resistor is provided on one side of the fuse F1. When the temperature of the electric blanket body exceeds the set maximum temperature, the first main control circuit increases the current passing through the heating resistor, so that the heating resistor generates high heat and then fuses the fuse F1. The fusing method is simple, and the automatic fusing function is achieved, which has good practicality.

[0087] In addition, the overall circuit structure design is ingenious and reasonable, ensuring the stability and reliability of the electric blanket during use.

[0088] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A convenient electric blanket, characterized in that: Included An electric blanket body, the electric blanket body comprising a first wireless module, a heating wire, a power input circuit for power supply, and a first main control circuit for wirelessly connecting to a mobile terminal, the first main control circuit being connected to the heating wire; A remote controller for remotely controlling the electric blanket body, the remote controller comprising a second main control circuit and a first function key circuit connected to the second main control circuit, a display circuit, a second wireless module and a second power input circuit for power supply, the first main control circuit is composed of a Bluetooth main control chip U1 of model BCE32F7611 and a peripheral circuit, the electric blanket body and the remote controller communicate through the first wireless module and the second wireless module; When the mobile terminal sends a control signal to the electric blanket body, the first main control circuit of the electric blanket body controls the heating wire to work, and at the same time, the first main control circuit sends the state of the electric blanket body to the remote control so that the remote control synchronously displays the state of the electric blanket; When the remote controller sends a control signal to the electric blanket body, the first main control circuit of the electric blanket body controls the heating wire to work, and at the same time, the first main control circuit sends the status to the mobile terminal so that the mobile terminal synchronously displays the status of the electric blanket; The heating wire includes at least two heating wires, each of which is provided with a constant temperature circuit and an overheat protection circuit for overheat detection and fusing, the first main control circuit is connected to the overheat protection circuit, the electric blanket body also includes a fuse F1 for being arranged between the live wire of the mains and the power input circuit, each overheat protection circuit is connected to the fuse F1 to control the fuse F1 to fuse; The overheat protection circuit includes a first diode, a second diode, a first unidirectional thyristor, a first resistor, a second resistor, a third resistor, a fourth resistor and a temperature detection unit; The first diode has a first anode and a first cathode for connecting to a power input circuit, the second diode has a second anode and a second cathode, the first anode and the second anode are connected to a temperature detection unit through a first resistor, the temperature detection unit is connected to a first main control circuit through a third resistor, and the first main control circuit is also connected to an analog ground through a fourth resistor; The second cathode is connected to the analog ground, the T1 pole of the first unidirectional thyristor is connected to the analog ground, the control pole of the first unidirectional thyristor is connected to the first main control circuit through the second resistor, and the T2 pole of the first unidirectional thyristor is connected to the temperature detection unit; The first resistor is a heating resistor, and the heating resistor is arranged on one side of the fuse F1 so that the heat generated by the heating resistor melts the fuse F1; The first main control circuit is connected to the corresponding sub-heating wires through the corresponding constant temperature circuit to control the working state of each sub-heating wire; The constant temperature circuit includes a second unidirectional thyristor, a fifth resistor, a sixth resistor and a capacitor; The control electrode of the second unidirectional thyristor is connected to the first main control circuit through the sixth resistor and the capacitor, the T1 electrode of the second unidirectional thyristor is grounded, the T1 electrode of the second unidirectional thyristor is also connected to the control electrode of the second unidirectional thyristor through the fifth resistor and the sixth resistor, and the T2 electrode of the second unidirectional thyristor is connected to the heating wire.

2. The convenient electric blanket according to claim 1, characterized in that: The circuits of the first wireless module and the second wireless module are both composed of a 2.4 GHz radio frequency transceiver module of model BC5602 as the core and its peripheral circuits.

3. The convenient electric blanket according to claim 1, characterized in that: The electric blanket body also includes a detection circuit, which includes a resistor R2, a resistor R4, a resistor R10, a resistor R11, a resistor R12, a resistor R16, a fuse F2 and a fuse F3; The resistor R11 has a first detection end and a second detection end for connecting to a power input circuit, the first detection end is connected to an analog ground via a resistor R12, and the first main control circuit is connected to the first detection end; One end of the resistor R2 is connected to the digital ground, the other end of the resistor R2 is connected to the analog ground via the fuse F2, and the first main control circuit is connected to the digital ground via the resistor R10; One end of the resistor R4 is connected to the signal ground, the other end of the resistor R4 is connected to the analog ground via the fuse F3, and the first main control circuit is connected to the signal ground via the resistor R16.

4. The convenient electric blanket according to claim 1, characterized in that: The electric blanket body also includes a second function button circuit and an indicator light circuit for displaying a working state and a fault state. The second function button circuit and the indicator light circuit are both connected to the first main control circuit.

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