Heating blanket

Abstract

A heating blanket comprises a heating blanket body and an operator, the heating blanket body is provided with a heating piece capable of heating after being powered on, a key assembly and a second MCU, the operator comprises a shell, a main control circuit is arranged in the shell, and the main control circuit comprises a first MCU, a drive control circuit and a power circuit. A heating control instruction generated when a user operates a key in the key assembly is sent to the second MCU, the second MCU sends the received heating control instruction to the first MCU, and the first MCU controls the heating piece to start heating or stop heating according to the heating control instruction and the driving control circuit, so that the heating blanket starts heating or stops heating. According to the heating blanket, the key assembly and the second MCU are arranged on the heating blanket body, when a user does not get up, control can be conducted through the key assembly on the heating blanket body, the heating control instruction is sent to the first MCU through the second MCU to control the heating blanket to conduct heating, and therefore the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating blankets, in particular to a heating blanket. Background Art

[0002] Current heating blankets are typically connected to a controller with buttons that control the heating blanket's heating levels. However, the controller isn't always nearby when the user is using the blanket. Therefore, when the user needs to turn off or adjust the heating blanket's heating level, they need to stand up or walk a short distance to do so, hindering convenient use. Summary of the Invention

[0003] The main technical problem solved by the present invention is that when the heating blanket is controlled to heat at different levels through buttons on the controller, when it is necessary to turn off or adjust the different levels of the heating blanket, the user needs to stand up or walk a short distance to realize the control, which affects the user experience.

[0004] According to a first aspect, an embodiment provides a heating blanket, comprising: a heating blanket body and an operator; the heating blanket body is provided with a heating element capable of generating heat when powered; the operator includes a housing, a main control circuit is disposed within the housing, the main control circuit is electrically connected to a plug via an electric wire extending from one end of the housing and having a first preset length, the plug being configured to receive power, and the main control circuit is electrically connected to the heating element via an electric wire extending from the other end of the housing and having a second preset length;

[0005] The main control circuit includes a first MCU, a drive control circuit, and a power supply circuit; the heating blanket body is further provided with a key assembly and a second MCU; the key assembly includes at least one key, which can generate a heating control instruction when operated by a user;

[0006] The power supply circuit has a first input terminal, a first output terminal, and a second output terminal. The first input terminal of the power supply circuit is electrically connected to the plug, and is used to obtain electrical energy from the plug and output a first operating voltage through the first output terminal after processing, and output a second operating voltage through the second output terminal;

[0007] The first MCU includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the first MCU is used to connect to the first output terminal of the power supply circuit, the second input terminal of the first MCU is electrically connected to the first output terminal of the second MCU via a wire, and the first output terminal of the first MCU is connected to the first input terminal of the drive control circuit; when the heating blanket is in the state of being heated, the first MCU is used to receive the heating control instruction output by the second MCU and send the heating control instruction to the drive control circuit through its first output terminal;

[0008] The drive control circuit includes a first input terminal, a first output terminal, and a second output terminal; the first input terminal of the drive control circuit is connected to the first output terminal of the first MCU, the first output terminal of the drive control circuit is connected to the third input terminal of the first MCU, and the second output terminal of the drive control circuit is connected to the fourth input terminal of the first MCU; upon receiving a heating control instruction from the first MCU, the drive control circuit is used to collect the voltage of the heating element and compare it with a reference voltage, and output a corresponding level signal to the first MCU according to the comparison result;

[0009] The second MCU includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the second MCU is used to be electrically connected to the second output terminal of the power supply circuit through a wire, the second input terminal of the second MCU is connected to the key assembly, and the first output terminal of the second MCU is electrically connected to the second input terminal of the first MCU through a wire; the second MCU is used to receive the heating control instruction output by the key assembly and send the heating control instruction to the first MCU through its first output terminal;

[0010] The heating element includes a first end and a second end; the first end of the heating element is connected to the second output end of the first MCU, and is used to receive a start heating instruction output by the first MCU, so that the heating blanket body starts to heat; the second end of the heating element is connected to the third output end of the first MCU, and is used to receive a stop heating instruction output by the first MCU, so that the heating blanket body stops heating.

[0011] In some embodiments, the main control circuit also includes a step-down circuit; the step-down circuit includes a first end and a second end; the first end of the step-down circuit is used to connect to the second output end of the power supply circuit, and the second end of the step-down circuit is electrically connected to the first input end of the second MCU through a wire; the step-down circuit is used to step down the second working voltage obtained from the power supply circuit, and output the stepped-down second working voltage to the second MCU.

[0012] In some embodiments, the first output terminal of the power supply circuit and the second output terminal of the power supply circuit are the same output terminal.

[0013] In some embodiments, the main control circuit also includes a surge protection circuit; the surge protection circuit includes a first end and a second end; the first end of the surge protection circuit is used to connect to the first input end of the power supply circuit, and the second end of the surge protection circuit is connected to the second input end of the drive control circuit; the surge protection circuit is used to protect the power supply circuit and generate a reference voltage, and send the reference voltage to the drive control circuit through its second end.

[0014] In some embodiments, the drive control circuit includes an optocoupler, a thyristor, a first comparator, and a second comparator;

[0015] The optical coupler includes a first end and a second end; the first end of the optical coupler serves as a first input end of the drive control circuit; the optical coupler is configured to send a turn-on signal to the thyristor through its second end upon receiving a start heating instruction in the heating control instruction from the first MCU, and to send a turn-off signal to the thyristor through its second end upon receiving a stop heating instruction in the heating control instruction from the first MCU;

[0016] The thyristor includes a first end and a second end; the first end of the thyristor is connected to the second end of the optical coupler, and the second end of the thyristor is connected to the heating element; the thyristor is configured to drive the thyristor to conduct when receiving the on signal, so that the circuit of the heating element is conducted, and to drive the thyristor to cut off when receiving the off signal, so that the circuit of the heating element is disconnected;

[0017] The first comparator includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the first comparator is connected to the surge protection circuit for receiving a reference voltage output by the surge protection circuit, the second input terminal of the first comparator is connected to the heating element, and when the circuit of the heating element is turned on, the second input terminal of the first comparator is used to receive the voltage of the heating element, and the first output terminal of the first comparator serves as the first output terminal of the drive control circuit; the first comparator is used to compare the reference voltage with the voltage of the heating element, and when the voltage of the heating element is higher than the reference voltage, output a first level signal to the first MCU, and when the voltage of the heating element is lower than the reference voltage, output a second level signal to the first MCU;

[0018] The second comparator includes a first input terminal, a second input terminal and a first output terminal; the first input terminal of the second comparator is connected to the surge protection circuit, and is used to receive the reference voltage output by the surge protection circuit. The second input terminal of the second comparator is connected to the heating element. When the circuit of the heating element is turned on, the second input terminal of the second comparator is used to receive the voltage of the heating element. The first output terminal of the second comparator serves as the second output terminal of the drive control circuit. The second comparator is used to compare the reference voltage with the voltage of the heating element. When the voltage of the heating element is higher than the reference voltage, the first level signal is output to the first MCU. When the voltage of the heating element is lower than the reference voltage, the second level signal is output to the first MCU.

[0019] In some embodiments, the heating element includes a first heating wire and a second heating wire, wherein the first heating wire is an NTC heating wire or a PTC heating wire, and the second heating wire is an NTC heating wire or a PTC heating wire.

[0020] In some embodiments, the heating blanket body also includes a gear indication module; the gear indication module includes a first end, and the first end of the gear indication module is connected to the second output end of the second MCU; the gear indication module is used to receive the heating control instruction output by the second MCU, and light up the indicator light in different gears according to the heating control instruction.

[0021] In some embodiments, the gear indication module includes a light-emitting diode D1, a light-emitting diode D2, a light-emitting diode D3, a light-emitting diode D4 and a light-emitting diode D5; one end of the light-emitting diode D1 is connected to the resistor R49, one end of the light-emitting diode D2 is connected to the resistor R50, one end of the light-emitting diode D3 is connected to the resistor R51, one end of the light-emitting diode D4 is connected to the resistor R52, and one end of the light-emitting diode D5 is connected to the resistor R53, and serves as the first end of the gear indication module.

[0022] In some embodiments, a button assembly is provided on the operator, and the button assembly includes at least one button, and the button can generate a heating control instruction when operated by a user.

[0023] In some embodiments, the first MCU and the second MCU are AIP8M101G.

[0024] According to the heating blanket of the above embodiment, since a key assembly and a second MCU are provided on the heating blanket body, when a user desires to control the heating blanket to heat up, they can, without getting up, operate the keys in the key assembly to generate a heating control instruction, which is then sent to the second MCU. The second MCU then sends the received heating control instruction to the first MCU. Therefore, the first MCU controls the heating element to start or stop heating based on the heating control instruction and the drive control circuit, thereby causing the heating blanket to start or stop heating. The user controls the heating blanket to heat at different levels through the key assembly on the heating blanket body, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a heating blanket;

[0026] Figure 2 A schematic structural diagram of a heating blanket according to another embodiment;

[0027] Figure 3 A schematic structural diagram of a heating blanket according to another embodiment;

[0028] Figure 4 A schematic structural diagram of a heating blanket according to another embodiment;

[0029] Figure 5 A schematic structural diagram of a heating blanket according to another embodiment;

[0030] Figure 6 A schematic structural diagram of a heating blanket according to another embodiment;

[0031] Figure 7 Schematic diagram of the structure of a heating blanket according to another embodiment. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0033] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0034] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0035] In an embodiment of the present application, a heating blanket is provided, comprising a heating blanket body and an operator. The heating blanket body is provided with a heating element capable of generating heat when powered, a button assembly, and a second microcontroller (MCU). The operator includes a housing, within which a main control circuit is disposed. The main control circuit is electrically connected to a plug via a wire extending from one end of the housing and having a first preset length. The plug is configured to receive power, and the main control circuit is electrically connected to the heating element via a wire extending from the other end of the housing and having a second preset length. The main control circuit includes a first microcontroller (MCU), a drive control circuit, and a power supply circuit. The button assembly includes at least one button that, when operated by a user, generates a heating control command. When the heating blanket is in a standby state, the user operates the button according to their needs. This generates a heating control command, which is then transmitted to the second MCU. The second MCU transmits the received heating control command to the first MCU. The first MCU receives the heating control command output by the second MCU and transmits the heating control command to the drive control circuit. Upon receiving the heating control command from the first MCU, the drive control circuit collects the voltage of the heating element and compares it with a reference voltage. Based on the comparison result, the corresponding level signal is output to the first MCU. The heating element receives a start heating command from the first MCU to start heating the heating blanket, and receives a stop heating command from the first MCU to stop heating the heating blanket. By providing a button assembly and a second MCU on the heating blanket, the user can operate the heating blanket using the button assembly on the blanket without getting up. The second MCU then sends heating control commands to the first MCU to control the heating blanket to start or stop heating, thereby improving the user experience.

[0036] Please refer to Figure 1In some embodiments, a heating blanket includes a heating blanket body 10 and an operator 20. The heating blanket body 10 is provided with a heating element 11 that generates heat when powered. The operator 20 includes a housing, within which a main control circuit 21 is disposed. The main control circuit 21 is electrically connected to a plug 30 via an electrical wire extending from one end of the housing and having a first preset length. The plug 30 is used to receive power. The main control circuit 21 is electrically connected to the heating element 11 via an electrical wire extending from the other end of the housing and having a second preset length. The heating blanket body 10 is also provided with a button assembly 12 and a second MCU 13. The button assembly 12 includes at least one button that, when operated by a user, can generate a heating control command.

[0037] Please refer to Figure 2 In some embodiments, the main control circuit 21 includes a first MCU 211 , a drive control circuit 212 , and a power supply circuit 213 , which are described below respectively.

[0038] In some embodiments, the first MCU 211 includes a first input terminal, a second input terminal, and a first output terminal. The first input terminal of the first MCU 211 is connected to the first output terminal of the power supply circuit 213. The second input terminal of the first MCU 211 is electrically connected to the first output terminal of the second MCU 13 via a wire. The first output terminal of the first MCU 211 is connected to the first input terminal of the drive control circuit 212. When the heating blanket is in the heating state, the first MCU 211 is configured to receive a heating control command output by the second MCU 13 and transmit the heating control command to the drive control circuit 212 via its first output terminal.

[0039] In some embodiments, the drive control circuit 212 includes a first input terminal, a first output terminal, and a second output terminal. The first input terminal of the drive control circuit 212 is connected to the first output terminal of the first MCU 211, the first output terminal of the drive control circuit 212 is connected to the third input terminal of the first MCU 211, and the second output terminal of the drive control circuit 212 is connected to the fourth input terminal of the first MCU 211. Upon receiving a heating control instruction from the first MCU 211, the drive control circuit 212 is configured to collect the voltage of the heating element 11 and compare it with a reference voltage, and output a corresponding level signal to the first MCU 211 based on the comparison result.

[0040] Please refer to Figure 3In some embodiments, the drive control circuit 212 includes an optocoupler 212a, a thyristor 212b, a first comparator 212c, and a second comparator 212d. The optocoupler 212a includes a first terminal and a second terminal. The first terminal of the optocoupler 212a serves as a first input terminal of the drive control circuit 212. The optocoupler 212a is configured to send a turn-on signal to the thyristor 212b via its second terminal upon receiving a start heating instruction from the first MCU 211, and to send a turn-off signal to the thyristor 212b via its second terminal upon receiving a stop heating instruction from the first MCU 211. The thyristor 212b includes a first end and a second end. The first end of the thyristor 212b is connected to the second end of the optocoupler 212a, and the second end of the thyristor 212b is connected to the heating element 11. The thyristor 212b is used to drive the thyristor 212b to turn on when receiving a turn-on signal, so that the circuit of the heating element 11 is turned on, and to drive the thyristor 212b to turn off when receiving a turn-off signal, so that the circuit of the heating element 11 is disconnected. The first comparator 212c includes a first input terminal, a second input terminal and a first output terminal. The first input terminal of the first comparator 212c is connected to the surge protection circuit 214 and is used to receive the reference voltage output by the surge protection circuit 214. The second input terminal of the first comparator 212c is connected to the heating element 11. When the circuit of the heating element 11 is turned on, the second input terminal of the first comparator 212c is used to receive the voltage of the heating element 11. The first output terminal of the first comparator 212c serves as the first output terminal of the drive control circuit 212. The first comparator 212c is used to compare the reference voltage with the voltage of the heating element 11. When the voltage of the heating element 11 is higher than the reference voltage, the first level signal is output to the first MCU211. When the voltage of the heating element 11 is lower than the reference voltage, the second level signal is output to the first MCU211. The second comparator 212d includes a first input terminal, a second input terminal and a first output terminal. The first input terminal of the second comparator 212d is connected to the surge protection circuit 214 and is used to receive the reference voltage output by the surge protection circuit 214. The second input terminal of the second comparator 212d is connected to the heating element 11. When the circuit of the heating element 11 is turned on, the second input terminal of the second comparator 212d is used to receive the voltage of the heating element 11. The first output terminal of the second comparator 212d serves as the second output terminal of the drive control circuit 212. The second comparator 212d is used to compare the reference voltage with the voltage of the heating element 11. When the voltage of the heating element 11 is higher than the reference voltage, the first level signal is output to the first MCU211. When the voltage of the heating element 11 is lower than the reference voltage, the second level signal is output to the first MCU211.

[0041] In some embodiments, when the first level signal is a high level signal, the second level signal is a low level signal, and when the first level signal is a low level signal, the second level signal is a high level signal.

[0042] In some embodiments, when the first comparator 212c outputs a high-level signal to the first MCU211 and the second comparator 212d also outputs a high-level signal to the first MCU211, the first MCU211 outputs a start heating instruction to the heating element 11, and when the first comparator 212c outputs a low-level signal to the first MCU211, or the second comparator 212d outputs a low-level signal to the first MCU211, or the first comparator 212c and the second comparator 212d both output low-level signals to the first MCU211, the first MCU211 outputs a stop heating instruction to the heating element 11.

[0043] In some embodiments, the thyristor 212 b includes a first thyristor and a second thyristor, wherein the first thyristor and the second thyristor are BT134.

[0044] In some embodiments, the power supply circuit 213 has a first input terminal, a first output terminal, and a second output terminal. The first input terminal of the power supply circuit 213 is connected to the plug 30, and is used to obtain electrical energy from the plug 30 and output a first operating voltage through the first output terminal after processing, and output a second operating voltage through the second output terminal.

[0045] In some embodiments, the first output terminal of the power circuit 213 and the second output terminal of the power circuit 213 are the same output terminal.

[0046] Please refer to Figure 4 The main control circuit 21 also includes a surge protection circuit 214. The surge protection circuit 214 includes a first end and a second end. The first end of the surge protection circuit 214 is used to connect to the first input end of the power supply circuit 213, and the second end of the surge protection circuit 214 is connected to the second input end of the drive control circuit 212. The surge protection circuit 214 is used to protect the power supply circuit 213 and generate a reference voltage, and send the reference voltage to the drive control circuit 212 through its second end.

[0047] Please refer to Figure 5 The main control circuit 21 also includes a step-down circuit 215. The step-down circuit 215 includes a first end and a second end. The first end of the step-down circuit 215 is used to connect to the second output end of the power supply circuit 213. The second end of the step-down circuit 215 is electrically connected to the first input end of the second MCU13 through a wire. The step-down circuit 215 is used to step down the second working voltage obtained from the power supply circuit 213 and output the stepped-down second working voltage to the second MCU13.

[0048] In some embodiments, the second MCU13 includes a first input end, a second input end and a first output end. The first input end of the second MCU13 is used to be electrically connected to the second output end of the power supply circuit 213 through a wire. The second input end of the second MCU13 is connected to the key assembly 12. The first output end of the second MCU13 is electrically connected to the second input end of the first MCU211 through a wire. The second MCU13 is used to receive the heating control instruction output by the key assembly 12 and send the heating control instruction to the first MCU211 through its first output end.

[0049] In some embodiments, the first MCU 211 and the second MCU 13 are AIP8M101G.

[0050] In some embodiments, the heating element 11 includes a first end and a second end. The first end of the heating element 11 is connected to the second output end of the first MCU211, and is used to receive a start heating instruction output by the first MCU211 so that the heating blanket body 10 starts to heat up. The second end of the heating element 11 is connected to the third output end of the first MCU211, and is used to receive a stop heating instruction output by the first MCU211 so that the heating blanket body 10 stops heating.

[0051] In some embodiments, the heating element 11 includes a first heating wire and a second heating wire, wherein the first heating wire is an NTC heating wire or a PTC heating wire, and the second heating wire is an NTC heating wire or a PTC heating wire.

[0052] Please refer to Figure 6 In some embodiments, the heating blanket body 10 further includes a gear indication module 14, which includes a first end connected to the second output end of the second MCU 13. The gear indication module 14 is used to receive a heating control instruction output by the second MCU 13 and to light up the indicator lights at different gears according to the heating control instruction.

[0053] In some embodiments, the gear indication module 14 includes an LED D1, an LED D2, an LED D3, an LED D4, and an LED D5, one end of the LED D1 is connected to the resistor R49, one end of the LED D2 is connected to the resistor R50, one end of the LED D3 is connected to the resistor R51, one end of the LED D4 is connected to the resistor R52, and one end of the LED D5 is connected to the resistor R53, and serves as the first end of the gear indication module 14.

[0054] Please refer to Figure 7In some embodiments, the operator 20 is provided with a button assembly 22, which includes at least one button that generates a heating control command when operated by the user. The user can select the button assembly 22 on the operator 20 or the button assembly 12 provided on the heating blanket body 10 to operate according to their needs. For example, when the user is near the operator 20 or has not yet laid down on the heating blanket, they can operate the button assembly 22 on the operator 20 to start heating the heating blanket. When the user is using the heating blanket, they can control the heating blanket to different levels of heating by operating the button assembly 12 provided on the heating blanket body 10, thereby improving the user experience.

[0055] According to the heating blanket of the above embodiment, since a key assembly and a second MCU are provided on the heating blanket body, when a user desires to control the heating blanket to heat up, they can, without getting up, operate the keys in the key assembly to generate a heating control instruction, which is then sent to the second MCU. The second MCU then sends the received heating control instruction to the first MCU. Therefore, the first MCU controls the heating element to start or stop heating based on the heating control instruction and the drive control circuit, thereby causing the heating blanket to start or stop heating. The user controls the heating blanket to heat at different levels through the key assembly on the heating blanket body, thereby improving the user experience.

[0056] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A heating blanket, characterized in that: include: A heating blanket body and an operator; the heating blanket body is provided with a heating element that can generate heat when powered; The operator includes a housing, a main control circuit is disposed in the housing, the main control circuit is electrically connected to a plug via a wire extending from one end of the housing and having a first preset length, the plug being used to receive power, and the main control circuit is electrically connected to the heating element via a wire extending from the other end of the housing and having a second preset length; The main control circuit includes a first MCU, a drive control circuit, and a power supply circuit; the heating blanket body is further provided with a key assembly and a second MCU; the key assembly includes at least one key, which can generate a heating control instruction when operated by a user; The power supply circuit has a first input terminal, a first output terminal, and a second output terminal. The first input terminal of the power supply circuit is electrically connected to the plug, and is used to obtain electrical energy from the plug and output a first operating voltage through the first output terminal after processing, and output a second operating voltage through the second output terminal; The first MCU includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the first MCU is used to connect to the first output terminal of the power supply circuit, the second input terminal of the first MCU is electrically connected to the first output terminal of the second MCU via a wire, and the first output terminal of the first MCU is connected to the first input terminal of the drive control circuit; when the heating blanket is in the state of being heated, the first MCU is used to receive the heating control instruction output by the second MCU and send the heating control instruction to the drive control circuit through its first output terminal; The drive control circuit includes a first input terminal, a first output terminal, and a second output terminal; the first input terminal of the drive control circuit is connected to the first output terminal of the first MCU, the first output terminal of the drive control circuit is connected to the third input terminal of the first MCU, and the second output terminal of the drive control circuit is connected to the fourth input terminal of the first MCU; upon receiving a heating control instruction from the first MCU, the drive control circuit is used to collect the voltage of the heating element and compare it with a reference voltage, and output a corresponding level signal to the first MCU according to the comparison result; The second MCU includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the second MCU is used to be electrically connected to the second output terminal of the power supply circuit through a wire, the second input terminal of the second MCU is connected to the key assembly, and the first output terminal of the second MCU is electrically connected to the second input terminal of the first MCU through a wire; the second MCU is used to receive the heating control instruction output by the key assembly and send the heating control instruction to the first MCU through its first output terminal; The heating element includes a first end and a second end; the first end of the heating element is connected to the second output end of the first MCU, and is used to receive a start heating instruction output by the first MCU, so that the heating blanket body starts to heat; the second end of the heating element is connected to the third output end of the first MCU, and is used to receive a stop heating instruction output by the first MCU, so that the heating blanket body stops heating.

2. The heating blanket according to claim 1, wherein: The main control circuit also includes a step-down circuit; the step-down circuit includes a first end and a second end; the first end of the step-down circuit is used to connect to the second output end of the power supply circuit, and the second end of the step-down circuit is electrically connected to the first input end of the second MCU through a wire; the step-down circuit is used to step down the second working voltage obtained from the power supply circuit, and output the stepped-down second working voltage to the second MCU.

3. The heating blanket according to claim 1, wherein: The first output end of the power supply circuit and the second output end of the power supply circuit are the same output end.

4. The heating blanket according to claim 1, wherein: The main control circuit also includes a surge protection circuit; the surge protection circuit includes a first end and a second end; the first end of the surge protection circuit is used to connect to the first input end of the power supply circuit, and the second end of the surge protection circuit is connected to the second input end of the drive control circuit; the surge protection circuit is used to protect the power supply circuit and generate a reference voltage, and send the reference voltage to the drive control circuit through its second end.

5. The heating blanket according to claim 4, wherein: The drive control circuit includes an optical coupler, a thyristor, a first comparator and a second comparator; The optical coupler includes a first end and a second end; the first end of the optical coupler serves as a first input end of the drive control circuit; the optical coupler is configured to send a turn-on signal to the thyristor through its second end upon receiving a start heating instruction in the heating control instruction from the first MCU, and to send a turn-off signal to the thyristor through its second end upon receiving a stop heating instruction in the heating control instruction from the first MCU; The thyristor includes a first end and a second end; the first end of the thyristor is connected to the second end of the optical coupler, and the second end of the thyristor is connected to the heating element; the thyristor is configured to drive the thyristor to conduct when receiving the on signal, so that the circuit of the heating element is conducted, and to drive the thyristor to cut off when receiving the off signal, so that the circuit of the heating element is disconnected; The first comparator includes a first input terminal, a second input terminal, and a first output terminal; the first input terminal of the first comparator is connected to the surge protection circuit and is used to receive the reference voltage output by the surge protection circuit; the second input terminal of the first comparator is connected to the heating element; when the circuit of the heating element is turned on, the second input terminal of the first comparator is used to receive the voltage of the heating element; the first output terminal of the first comparator serves as the first output terminal of the drive control circuit; The first comparator is used to compare the reference voltage with the voltage of the heating element, and output a first level signal to the first MCU when the voltage of the heating element is higher than the reference voltage; and output a second level signal to the first MCU when the voltage of the heating element is lower than the reference voltage; The second comparator includes a first input terminal, a second input terminal and a first output terminal; the first input terminal of the second comparator is connected to the surge protection circuit, and is used to receive the reference voltage output by the surge protection circuit. The second input terminal of the second comparator is connected to the heating element. When the circuit of the heating element is turned on, the second input terminal of the second comparator is used to receive the voltage of the heating element. The first output terminal of the second comparator serves as the second output terminal of the drive control circuit. The second comparator is used to compare the reference voltage with the voltage of the heating element. When the voltage of the heating element is higher than the reference voltage, the first level signal is output to the first MCU. When the voltage of the heating element is lower than the reference voltage, the second level signal is output to the first MCU.

6. The heating blanket according to claim 1, wherein: The heating element includes a first heating wire and a second heating wire, wherein the first heating wire is an NTC heating wire or a PTC heating wire, and the second heating wire is an NTC heating wire or a PTC heating wire.

7. The heating blanket according to claim 1, wherein: The heating blanket body also includes a gear indication module; the gear indication module includes a first end, and the first end of the gear indication module is connected to the second output end of the second MCU; the gear indication module is used to receive the heating control instruction output by the second MCU, and to light up the indicator light under different gears according to the heating control instruction.

8. The heating blanket according to claim 7, wherein: The gear position indication module includes a light-emitting diode D1, a light-emitting diode D2, a light-emitting diode D3, a light-emitting diode D4 and a light-emitting diode D5; one end of the light-emitting diode D1 is connected to the resistor R49, one end of the light-emitting diode D2 is connected to the resistor R50, one end of the light-emitting diode D3 is connected to the resistor R51, one end of the light-emitting diode D4 is connected to the resistor R52, and one end of the light-emitting diode D5 is connected to the resistor R53, and serves as the first end of the gear position indication module.

9. The heating blanket according to claim 1, wherein: The operator is provided with a button assembly.

10. The heating blanket according to claim 1, wherein: The first MCU and the second MCU are AIP8M101G.

Images