Double-control electric blanket compatible with sound control and key control

Abstract

The utility model belongs to the technical field of electric blankets, and discloses a double-control electric blanket compatible with sound control and key control. In the double-control electric blanket, a heating part comprises a heating wire, a thermistor layer and a copper wire; the main control module comprises an MCU chip, an operational amplifier and a clamping diode; the copper wire is connected to the MCU chip through the operational amplifier and the clamping diode in sequence; the key control module comprises a plurality of keys which are arranged in parallel, and the keys are in one-to-one correspondence with control functions which can be realized by the electric blanket; the sound control module comprises a voice recognizer and a plurality of microphones, the microphones are independently embedded in the shell, and a sound receiving part of each microphone is located on the outer side of the shell; all the sensors are in communication connection with the voice recognizer; the voice recognizer comprises a plurality of control pins, and the control pins are in one-to-one correspondence with control functions which can be realized by the electric blanket; wherein the keys and the control pins corresponding to the same control function are connected to the same pin of the MCU chip. The control system is convenient to control and operate and does not affect sleep of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of electric blankets, in particular to a dual-control electric blanket compatible with voice control and button control. Background Art

[0002] An electric blanket is a contact-type electric heating device that energizes the heating wire to achieve instant heating. In a cold environment, it can not only be used to dehumidify and remove moisture from bedding, but also increase the temperature of bedding to improve people's sleeping comfort.

[0003] The existing electric blanket works by connecting the power supply and setting the gear position through the key switch to control the switch of the electric blanket and the heating temperature of the heating wire. In the process, a signal light is used to indicate the switch status and the current specific temperature gear of the electric blanket on the one hand, and to help the user find the key switch to perform relevant adjustment operations in the dark at night on the other hand.

[0004] However, in actual application, the method of using signal lights to indicate status and assist in operation adjustment has the following defects: the signal lights need to be always on to achieve the above functions, which is not friendly to the user's sleep, especially the sleep of users who are sensitive to light. Although some types of electric blankets have the signal lights set to timed off, which can avoid affecting the user's sleep quality, it affects the user's operation of the electric blanket at night. It is common for users to not be able to find the button switch when they need to adjust the operation, or knock over objects during the search process. Utility Model Content

[0005] The utility model aims to provide a dual-control electric blanket compatible with voice control and button control, so as to improve the technical problem that convenient control and not affecting the sleep quality of users cannot be satisfied at the same time in the current electric blanket control process.

[0006] In order to achieve the above purpose, the utility model proposes the following technical solutions:

[0007] This technical solution provides a dual-control electric blanket that is compatible with voice control and key control. It includes a heating part and a controller that cooperate with each other; the controller includes a shell, and a main control module, a key control module and a voice control module encapsulated in the shell;

[0008] The heating part includes a heating wire, a thermistor layer and a copper wire in sequence;

[0009] The main control module includes an MCU chip, an operational amplifier and a clamping diode; the copper wire is connected to the MCU chip via the operational amplifier and the clamping diode in sequence;

[0010] The key control module includes a plurality of buttons arranged in parallel, wherein the buttons correspond one to one with the control functions that can be realized by the electric blanket;

[0011] The voice control module includes a voice recognizer and a plurality of microphones, each microphone is independently embedded in the housing, and their sound receiving parts are located outside the housing; and are all connected to the voice recognizer for communication; wherein the voice recognizer includes a plurality of control pins, and the control pins correspond one to one with the control functions that can be realized by the electric blanket;

[0012] Among them, the buttons and control pins corresponding to the same control function are connected to the same pin of the MCU chip.

[0013] Further, it comprises a first AC end, a second AC end, a first fuse and a second fuse; the first AC end and the second AC end are used to supply power to the heating wire;

[0014] The first fuse and the second fuse are connected in series, the free end of the first fuse is electrically connected to the first AC end, and the free end of the second fuse is grounded;

[0015] The common end of the first fuse and the second fuse, and the second AC end are respectively electrically connected to the two ends of the first capacitor, and to the two free ends of the first resistor and the second resistor which are arranged in series.

[0016] Further, it includes a third resistor, a second capacitor, a rectifier circuit and a filter circuit; the rectifier circuit includes a first diode and a second diode; the filter circuit includes a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor connected in parallel;

[0017] The third resistor and the second capacitor are connected in series, and the remaining end of the third resistor is electrically connected to the common end of the first fuse and the second fuse; the remaining end of the second capacitor is electrically connected to the positive electrode of the first diode and the negative electrode of the second diode at the same time; the negative electrode of the first diode and the positive electrode of the second diode are electrically connected to the two ends of the third capacitor respectively; the end of the sixth capacitor corresponding to the positive electrode of the second diode is electrically connected to the VCC pin of the MCU chip; the end of the sixth capacitor corresponding to the negative electrode of the first diode is grounded.

[0018] Further, the operational amplifier includes a first operational amplifier and a second operational amplifier;

[0019] The cathode of the third diode is electrically connected to the common end of the first fuse and the second fuse, and the anode of the third diode is electrically connected to the inverting input end of the first op amp and the non-inverting input end of the second op amp via a plurality of fourth resistors and is grounded; the non-inverting input end of the first op amp and the reverse input end of the second op amp are both electrically connected to the copper wire and the heating wire; the output end of the first op amp and the output end of the second op amp are connected to the MCU chip through different pins.

[0020] Further, the clamping diode includes a first clamping diode and a second clamping diode;

[0021] The first clamping diode and the second clamping diode are connected in series, the first remaining end of the first clamping diode is electrically connected to the copper wire and the heating wire at the same time, the first remaining end of the second clamping diode is grounded, and the second remaining end of the first clamping diode and the second remaining end of the second clamping diode are connected to the MCU chip via the same pin.

[0022] Furthermore, the model of the speech recognizer is: CI1302; the microphone includes a first microphone and a second microphone;

[0023] The positive electrode and negative electrode of the first microphone are respectively connected to the M1+ pin and the M1- pin of the speech recognizer; the positive electrode and negative electrode of the second microphone are respectively connected to the B2 pin and the B1 pin of the speech recognizer;

[0024] The fourth diode is connected in series with the seventh capacitor, the spare end of the fourth diode is connected to the power supply, and the common end of the fourth diode and the seventh capacitor is connected to the VCC pin of the speech recognizer; the spare end of the seventh capacitor is grounded and connected to the GND pin of the speech recognizer.

[0025] Furthermore, the model of the MCU chip is: HT50F72.

[0026] Furthermore, it includes a signal light; the signal light is communicatively connected with the MCU chip.

[0027] Furthermore, it includes a speaker; the speaker is electrically connected to the speech recognizer.

[0028] Beneficial effects:

[0029] It can be seen from the above that the present technical solution provides an improved electric blanket to overcome the technical defects of the electric blanket in the prior art in that convenient operation and not affecting the user's sleep quality are incompatible during the control process.

[0030] The electric blanket is composed of a heating part, a main control module, a key control module and a voice control module that cooperate with each other. Specifically, the heating part includes a heating wire, a thermistor layer and a copper wire in sequence. The main control module includes an MCU chip, an op amp and a clamping diode; the copper wire is connected to the MCU chip in sequence through the op amp and the clamping diode. The key control module includes a plurality of buttons arranged in parallel, wherein the buttons correspond to the control functions that can be realized by the electric blanket. The voice control module includes a voice recognizer and a plurality of microphones, each microphone is independently embedded in the shell, and their sound receiving parts are located outside the shell; and they are all connected to the voice recognizer in communication; wherein the voice recognizer includes a plurality of control pins, and the control pins correspond to the control functions that can be realized by the electric blanket in a one-to-one manner. Among them, the buttons and control pins corresponding to the same control function are connected to the same pin of the MCU chip. At this time, before the user goes to sleep, the switch control and the target control temperature setting can be performed through the buttons of the key module. After the temperature is set, since there is no signal indicator light that is always on, it will not affect the normal sleep of the user, especially the light-sensitive user. At night, when switch control or temperature adjustment is required, you only need to speak the command of turning on or off, or the target temperature gear, and the microphone can obtain the voice signal, and send it to the MCU chip after recognition by the voice recognizer, so as to control the heating part of the electric blanket to achieve corresponding regulation. In this process, without setting the signal indicator light, the smooth progress of the corresponding regulation operation is also ensured. At the same time, in the process of setting each module, on the one hand, since the microphones are independent of each other, and their sound receiving parts are located outside the shell, and corresponding op amps are set; therefore, it is ensured that the user's voice control signals can be effectively obtained; and then the subsequent voice control adjustment is smoothly carried out. On the other hand, a clamping diode is set in the main control module for surge voltage protection to avoid circuit abnormality caused by the access of the voice control module. At the same time, the keys and control pins corresponding to the same control function are set in the voice control module and the key control module to access the same pin of the MCU chip, so as to avoid the access of the voice control module to complicate the circuit structure and make the circuit logic clearer.

[0031] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0032] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0034] Figure 1 This is a circuit structure diagram of the dual-control electric blanket compatible with voice control and button control described in this embodiment. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the utility model belongs.

[0036] The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The electric blanket is a commonly used heating appliance. In the specific temperature control process of the electric blanket, it is necessary to use a signal light to indicate the status and assist in the operation and adjustment. However, the inventors have found that in actual application of this method, if the signal light is always on, it will be unfriendly to the user's sleep, especially the sleep of users who are sensitive to light. If the signal light is set to timed off control, it will affect the user's operation of the electric blanket at night. It is often the case that the button switch cannot be found when adjustment operations are required, or objects are knocked over during the search process. Based on this, the present embodiment aims to provide a dual-control electric blanket that is compatible with voice control and button control to improve the above-mentioned technical defects.

[0038] The following is a further detailed introduction to the dual-control electric blanket compatible with voice control and button control disclosed in the utility model in conjunction with the embodiments shown in the accompanying drawings.

[0039] The dual-control electric blanket includes a heating part and a controller that cooperate with each other; the controller includes a shell, and a main control module, a key control module and a voice control module encapsulated in the shell. Figure 1 As shown, the heating part includes a heating wire, a thermistor layer and a copper wire in sequence. The main control module includes an MCU chip, an operational amplifier and a clamping diode; the copper wire is connected to the MCU chip through the operational amplifier and the clamping diode in sequence. The key control module includes a plurality of buttons arranged in parallel, wherein the buttons correspond one-to-one to the control functions that can be realized by the electric blanket. The voice control module includes a voice recognizer and a plurality of microphones, each microphone is independently embedded in the shell, and their sound receiving parts are located outside the shell; and they are all communicatively connected with the voice recognizer; wherein the voice recognizer includes a plurality of control pins, and the control pins correspond one-to-one to the control functions that can be realized by the electric blanket. Among them, the buttons and control pins corresponding to the same control function are connected to the same pin of the MCU chip. In this embodiment, the control functions include switch control, temperature regulation and timing of the electric blanket.

[0040] In specific implementation, before the user goes to sleep, the switch control or target control temperature setting can be performed through the buttons of the button module. After the temperature is set, since there is no signal indicator light that is always on, it will not affect the normal sleep of the user, especially the light-sensitive user. When the temperature needs to be adjusted at night, just speak the switch command or the target control temperature gear, the microphone can obtain the voice signal, and after recognition by the voice recognizer, it will be sent to the MCU chip, and then the heating part of the electric blanket will be controlled to achieve corresponding regulation. In this process, without setting a signal indicator light, the smooth progress of the temperature control operation is also ensured.

[0041] At the same time, in the process of setting up each module, since the microphones are independent of each other, and their sound receiving parts are located on the outside of the shell, and corresponding operational amplifiers are provided, it is ensured that the user's voice control signals can be effectively acquired, thereby achieving the smooth progress of subsequent voice control adjustments. Furthermore, it also avoids the introduction of other technical defects caused by the addition of corresponding modules. Specifically, a clamping diode is provided in the main control module for surge voltage protection to avoid circuit abnormalities caused by the access of the voice control module. At the same time, buttons and control pins corresponding to the same control function are provided in the voice control module and the key control module to connect to the same pin of the MCU chip, so as to avoid the access of the voice control module to complicate the circuit structure and make the circuit logic clearer.

[0042] Specifically, the operational amplifier includes a first operational amplifier OPA2 and a second operational amplifier OPA1.

[0043] The cathode of the third diode D3 is electrically connected to the common end of the first fuse FU1 and the second fuse FU2, and the anode of the third diode D3 is electrically connected to the inverting input end of the first op amp OPA2 and the non-inverting input end of the second op amp OPA1 via a plurality of fourth resistors R4 and is grounded; the non-inverting input end of the first op amp OPA2 and the reverse input end of the second op amp OPA1 are electrically connected to the copper wire and the heating wire; the output end of the first op amp OPA2 and the output end of the second op amp OPA1 are connected to the MCU chip through different pins.

[0044] Specifically, the clamping diode includes a first clamping diode T1 and a second clamping diode T2. The first clamping diode T1 and the second clamping diode T2 are connected in series, the first free end of the first clamping diode T1 is electrically connected to the copper wire and the heating wire at the same time, the first free end of the second clamping diode T2 is grounded, and the second free end of the first clamping diode T1 and the second free end of the second clamping diode T2 are connected to the MCU chip through the same pin.

[0045] Furthermore, in order to improve the application safety of the dual-control electric blanket, a first AC terminal AC1, a second AC terminal AC2, a first fuse FU1 and a second fuse FU2 are provided. The first AC terminal AC1 and the second AC terminal AC2 are used to supply power to the heating wire. The first fuse FU1 and the second fuse FU2 are connected in series, the free end of the first fuse FU1 is electrically connected to the first AC terminal AC1, and the free end of the second fuse FU2 is grounded. The common end of the first fuse FU1 and the second fuse FU2, and the second AC terminal AC2 are electrically connected to the two ends of the first capacitor C1, and to the two free ends of the first resistor R1 and the second resistor R2 arranged in series, respectively. At this time, AC protection can be performed when the electrical signal is abnormal by blowing the corresponding fuse to avoid adverse effects on the electric blanket circuit.

[0046] In order to effectively protect the power signal of the MCU chip to improve signal stability. The dual-control electric blanket is provided to include a third resistor R3, a second capacitor C2, a rectifier circuit and a filter circuit. Among them, the rectifier circuit includes a first diode D1 and a second diode D2. Among them, the first diode D1 is a voltage-stabilizing diode, and the second diode D2 is used for rectification. The filter circuit includes a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6 connected in parallel.

[0047] Specifically, the third resistor R3 and the second capacitor C2 are connected in series, the spare end of the third resistor R3 is electrically connected to the common end of the first fuse FU1 and the second fuse FU2; the spare end of the second capacitor C2 is electrically connected to the positive electrode of the first diode D1 and the negative electrode of the second diode D2 at the same time; the negative electrode of the first diode D1 and the positive electrode of the second diode D2 are electrically connected to the two ends of the third capacitor C3 respectively. The end of the sixth capacitor C6 corresponding to the positive electrode of the second diode D2 is electrically connected to the VCC pin of the MCU chip; the end of the sixth capacitor C6 corresponding to the negative electrode of the first diode D1 is grounded.

[0048] As a specific implementation, in this embodiment, the model of the MCU chip is: HT50F72, and the model of the speech recognizer is: CI1302. And it includes the following structure to rectify and stabilize the power signal connected to the speech recognizer to improve stability: the fourth diode D4 is connected in series with the seventh capacitor C7, the spare end of the fourth diode D4 is connected to the power supply, and the common end of the fourth diode D4 and the seventh capacitor C7 is connected to the VCC pin of the speech recognizer; the spare end of the seventh capacitor C7 is grounded and connected to the GND pin of the speech recognizer.

[0049] The microphone includes a first microphone and a second microphone to improve the effectiveness of obtaining voice control signals. In terms of specific connection, the positive and negative electrodes of the first microphone are respectively connected to the M1+ pin and the M1- pin of the voice recognizer; the positive and negative electrodes of the second microphone are respectively connected to the B2 pin and the B1 pin of the voice recognizer.

[0050] As an optional implementation, the dual-control electric blanket also includes a signal light; the signal light is connected to the MCU chip. At this time, the state of the signal light can be controlled by voice signals. In specific implementation, if the user is not asleep, the signal light can be controlled to light up by voice input, recognition by the voice recognizer, and feedback to the signal light by the MCU chip, so as to assist in key operation control and improve the convenience of key operation. When it is time to fall asleep, the signal light can be turned off by voice control in the same way to avoid affecting sleep.

[0051] As another optional implementation, the dual-control electric blanket also includes a speaker, so that if an abnormality occurs during the voice control process, the abnormality feedback can be provided through the speaker.

[0052] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A dual-control electric blanket compatible with voice control and button control, characterized in that: It includes a heating part and a controller that cooperate with each other; the controller includes a shell, and a main control module, a key control module and a voice control module encapsulated in the shell; The heating part includes a heating wire, a thermistor layer and a copper wire in sequence; The main control module includes an MCU chip, an operational amplifier and a clamping diode; the copper wire is connected to the MCU chip via the operational amplifier and the clamping diode in sequence; The key control module includes a plurality of buttons arranged in parallel, wherein the buttons correspond one to one with the control functions that can be realized by the electric blanket; The voice control module includes a voice recognizer and a plurality of microphones, each microphone is independently embedded in the housing, and their sound receiving parts are located outside the housing; and are all connected to the voice recognizer for communication; wherein the voice recognizer includes a plurality of control pins, and the control pins correspond one to one with the control functions that can be realized by the electric blanket; Among them, the buttons and control pins corresponding to the same control function are connected to the same pin of the MCU chip.

2. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: It includes a first AC end, a second AC end, a first fuse and a second fuse; the first AC end and the second AC end are used to supply power to the heating wire; The first fuse and the second fuse are connected in series, the free end of the first fuse is electrically connected to the first AC end, and the free end of the second fuse is grounded; The common end of the first fuse and the second fuse, and the second AC end are respectively electrically connected to the two ends of the first capacitor, and to the two free ends of the first resistor and the second resistor which are arranged in series.

3. The dual-control electric blanket compatible with voice control and button control according to claim 2, characterized in that: It includes a third resistor, a second capacitor, a rectifier circuit and a filter circuit; the rectifier circuit includes a first diode and a second diode; the filter circuit includes a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor connected in parallel; The third resistor and the second capacitor are connected in series, and the spare end of the third resistor is electrically connected to the common end of the first fuse and the second fuse; the spare end of the second capacitor is electrically connected to the positive electrode of the first diode and the negative electrode of the second diode at the same time; the negative electrode of the first diode and the positive electrode of the second diode are electrically connected to the two ends of the third capacitor respectively; the end of the sixth capacitor corresponding to the positive electrode of the second diode is electrically connected to the VCC pin of the MCU chip; the end of the sixth capacitor corresponding to the negative electrode of the first diode is grounded.

4. The dual-control electric blanket compatible with voice control and button control according to claim 2, characterized in that: The operational amplifier comprises a first operational amplifier and a second operational amplifier; The cathode of the third diode is electrically connected to the common end of the first fuse and the second fuse, and the anode of the third diode is electrically connected to the inverting input end of the first op amp and the non-inverting input end of the second op amp via a plurality of fourth resistors and is grounded; the non-inverting input end of the first op amp and the reverse input end of the second op amp are both electrically connected to the copper wire and the heating wire; the output end of the first op amp and the output end of the second op amp are both connected to the MCU chip.

5. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: The clamping diode comprises a first clamping diode and a second clamping diode; The first clamping diode and the second clamping diode are connected in series, the first remaining end of the first clamping diode is electrically connected to the copper wire and the heating wire at the same time, the first remaining end of the second clamping diode is grounded, and the second remaining end of the first clamping diode and the second remaining end of the second clamping diode are connected to the MCU chip via the same pin.

6. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: The model of the speech recognizer is: CI1302; the microphone includes a first microphone and a second microphone; The positive electrode and negative electrode of the first microphone are respectively connected to the M1+ pin and the M1- pin of the speech recognizer; the positive electrode and negative electrode of the second microphone are respectively connected to the B2 pin and the B1 pin of the speech recognizer; The fourth diode is connected in series with the seventh capacitor, the spare end of the fourth diode is connected to the power supply, and the common end of the fourth diode and the seventh capacitor is connected to the VCC pin of the speech recognizer; the spare end of the seventh capacitor is grounded and connected to the GND pin of the speech recognizer.

7. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: The model of the MCU chip is: HT50F72.

8. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: It includes a signal light; the signal light is communicatively connected with the MCU chip.

9. The dual-control electric blanket compatible with voice control and button control according to claim 1, characterized in that: It includes a speaker; the speaker is electrically connected to the speech recognizer.

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