Automatic control circuit and control device

Abstract

The present application relates to an automatic control circuit and a control device, which includes a demodulation circuit for receiving a radio frequency signal sent by a remote control, demodulating the signal, and sending the demodulated radio frequency signal to the control circuit, and a control circuit for parsing the demodulated radio frequency signal and controlling the controlled device according to the parsed signal; the control circuit connects the demodulation circuit and the controlled device. The control device includes a remote control and an automatic control circuit, and the demodulation circuit of the automatic control circuit is wirelessly connected to the remote control. The above-mentioned automatic control circuit can control the electrical device after receiving and processing the radio frequency signal sent by the remote control, and the control device can realize the corresponding control function according to the command of the remote control. The above-mentioned automatic control circuit and control device can increase the convenience of use of the electrical device and improve the reliability.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to an automatic control circuit and a control device. Background Art

[0002] With the development of science and technology, various electrical equipment emerges in an endless stream. The important role played by electrical equipment in our life and production cannot be ignored. It brings us great convenience and becomes an indispensable part of our production and life.

[0003] In order to make electrical equipment work properly, the traditional control method is to design an operating system on the equipment to control the electrical equipment. However, the addition of an operating system will increase the size of the electrical equipment, making it less convenient to use. Summary of the invention

[0004] Based on this, it is necessary to provide an automatic control circuit and a control device to address the problem that electrical equipment is inconvenient to use.

[0005] An automatic control circuit, comprising:

[0006] A demodulation circuit, used for receiving a radio frequency signal sent by a remote controller, demodulating the signal, and sending the demodulated radio frequency signal to a control circuit;

[0007] The control circuit is used to analyze the demodulated radio frequency signal and control the controlled device according to the analyzed signal; the control circuit is connected to the demodulation circuit and is used to connect to the controlled device.

[0008] A control device comprises a remote controller and an automatic control circuit, wherein a demodulation circuit of the automatic control circuit is wirelessly connected to the remote controller.

[0009] The above automatic control circuit and control device receive the radio frequency signal sent by the remote control through the demodulation circuit and automatically demodulate it without intervention. After sending the demodulated radio frequency signal to the control circuit, the control circuit performs parsing and processing. The control circuit controls the electrical equipment according to the parsed signal, making the electrical equipment convenient and reliable to use. The control device includes an automatic control circuit and a remote control, and can realize corresponding control functions according to the instructions of the remote control. The above automatic control circuit and control device can increase the convenience of use of electrical equipment and improve reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of an automatic control circuit in one embodiment;

[0011] Figure 2 This is a diagram of the composition of an automatic control circuit in one embodiment;

[0012] Figure 3 This is a structural diagram of an automatic control circuit in another embodiment;

[0013] Figure 4 1 is a diagram showing the composition of a power supply circuit in one embodiment. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is described more comprehensively below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] In one embodiment, see Figure 1 The automatic control circuit includes a demodulation circuit 10 and a control circuit 20. The demodulation circuit 10 is used to receive the radio frequency signal sent by the remote control for demodulation, and send the demodulated radio frequency signal to the control circuit 20; the control circuit 20 connects the demodulation circuit 10 and the controlled device, and is used to parse the demodulated radio frequency signal and control the controlled device according to the parsed signal. After receiving the radio frequency signal sent by the remote control, the demodulation circuit 10 can automatically demodulate the radio frequency signal without intervention, and send the demodulated radio frequency signal to the control circuit 20. The control circuit 20 controls the electrical equipment according to the parsed radio frequency signal, making the electrical equipment convenient and reliable to use.

[0016] In one embodiment, see Figure 2 The demodulation circuit 10 includes a wireless receiving chip U5, an antenna E1, a filter circuit 101 and a resonator Y1. The wireless receiving chip U5 is connected to the control circuit 20 and is connected to the antenna E1 through the filter circuit 101. The resonator Y1 is connected to the wireless receiving chip U5.

[0017] Among them, after receiving the RF signal, the antenna E1 sends it to the filter circuit 101, and the filter circuit 101 filters the received RF signal and then transmits it to the wireless receiving chip U5. The wireless receiving chip U5 demodulates the received RF signal and outputs it to the control circuit 20, and the control circuit 20 implements the corresponding control function. The wireless receiving chip U5 is also connected to the resonator Y1 to receive the clock signal generated by the resonator Y1 to achieve the purpose of normal operation. The filter circuit 101 can filter out clutter, which is beneficial to improve the working stability of the circuit. The model of the wireless receiving chip U5 is not unique. In this embodiment, a wireless receiving chip of model LR680R can be used. It can be understood that in other embodiments, other models of wireless receiving chips U5 that can realize the RF signal demodulation function are also considered to meet the requirements.

[0018] Specifically, in this embodiment, Figure 2As shown, the ANT pin of the wireless receiving chip U5 is connected to the antenna E1, the DOUT pin of the wireless receiving chip U5 is connected to the control circuit, and the VSSRF pin of the wireless receiving chip U5 is grounded; the VDDRF pin of the wireless receiving chip U5 is connected to one end of the capacitor C12, and the other end of the capacitor C12 is grounded; the CTH pin of the wireless receiving chip U5 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is grounded; the CAGC pin of the wireless receiving chip U5 is connected to one end of the capacitor C10, and the other end of the capacitor C10 is grounded; the SHUT pin of the wireless receiving chip U5 is an enable terminal, which is 0 when working normally and the working voltage of the chip when shut down; the OSC pin of the wireless receiving chip U5 is connected to the resonator Y1, which is used to receive the clock signal generated by the resonator Y1. Among them, the capacitor C12, the capacitor C13 and the capacitor C10 connected to the wireless receiving chip U5 are used to realize the filtering function of the internal signal. After receiving the RF signal, the antenna E1 sends it to the filter circuit 101. The filter circuit 101 filters the received RF signal and then transmits it to the ANT pin of the wireless receiving chip U5. The ANT pin is the antenna input end of the wireless receiving chip U5, which is used to receive external RF signals and then demodulate the received RF signals. After demodulation, the digital signal is output to the control circuit 20 through the DOUT pin, and the control circuit 20 further processes it to realize the corresponding control function.

[0019] The resonator Y1 is used to generate a clock signal. In one embodiment, the resonator Y1 can be a quartz crystal or a ceramic resonator, which can be selected according to specific working requirements. For example, when the wireless receiving chip U5 works in a narrow bandwidth mode, a quartz crystal resonator can better meet the working requirements.

[0020] In one embodiment, the filter circuit 101 includes an inductor L1, an inductor L2, a capacitor C11 and a capacitor C9, one end of the inductor L1 is connected to the antenna E1, and the other end is grounded; one end of the inductor L2 is connected to the antenna E1, and the other end is grounded; one end of the capacitor C11 is connected to the antenna E1, and the other end is grounded, and one end of the capacitor C9 is connected to the antenna E1, and the other end is connected to the wireless receiving chip U5, and is grounded through the inductor L2. In this embodiment, the filter circuit 101 only includes two inductors and two capacitors, which is conducive to reducing the circuit area. The filter circuit 101 composed of two inductors and two capacitors is used for filtering, which can save production costs while ensuring the reliability of signal transmission.

[0021] In addition, according to the different demodulation frequencies of the control circuit 20, the parameter values ​​corresponding to the various components in the demodulation circuit 10 are also different. Taking the demodulation circuit 10 with a demodulation frequency of 315Mhz as an example, the value of the inductor L1 in the circuit is 27nH, the value of the inductor L2 is 39nH or 33nH, the value of the capacitor C11 is 6pF, the value of the capacitor C9 is 2.2pF or 2.4pF, the value of the capacitor C12 is 0.1μF, the value of the capacitor C13 is 0.47μF, the value of the capacitor C10 is 4.7μF, and the frequency generated by the resonator Y1 is 6.7458Mhz. By selecting components with specific parameters to form the demodulation circuit 10, it is possible to receive and demodulate the RF signal with a frequency of 315Mhz, and then send the demodulated signal to the control circuit 20 to achieve the corresponding function. The 315Mhz wireless module is widely used, and can be used in fields such as vehicle monitoring, access control systems, industrial data acquisition systems, wireless tags, identity recognition, security and fire protection systems, wireless remote control systems, biological signal acquisition, robot control or digital image transmission, which can greatly improve the convenience of people's daily life. It can be understood that in other embodiments, the demodulation function of other frequency radio frequency signals can also be realized by changing the parameter values ​​of the components in the demodulation circuit 10.

[0022] In one embodiment, Figure 2 As shown, the control circuit 20 includes a controller U1 and a voltage stabilizing filter circuit 201. The controller U1 is connected to the demodulation circuit 10 and the controlled device, and the voltage stabilizing filter circuit 201 is connected to the controller U1. Specifically, the controller U1 is connected to the demodulation circuit 10, and is used to receive the demodulated RF signal output by the demodulation circuit 10 for analysis, and implement the corresponding control function for the controlled device connected thereto according to the analyzed signal to ensure the normal operation of the controlled device. The voltage stabilizing filter circuit 201 is connected to the controller U1, and is also used to connect to the power access terminal VCC_3V3. The voltage stabilizing filter circuit 201 is connected to the power access terminal VCC_3V3 input voltage for voltage stabilization and filtering to supply power to the controller U1, which can maintain the power supply stability of the controller U1, can protect the controller U1 itself from damage caused by unstable power supply, and can also improve the working reliability of the controller U1.

[0023] In one embodiment, the voltage stabilizing filter circuit 201 includes a capacitor C1 and a capacitor C2, one end of the capacitor C1 is grounded, and the other end is connected to the power access terminal VCC_3V3 and the controller U1; one end of the capacitor C2 is grounded, and the other end is connected to the power access terminal VCC_3V3 and the controller U1. The specific values ​​of the capacitor C1 and the capacitor C2 are not unique. For example, the value of the capacitor C1 can be 4.7μF, and the value of the capacitor C2 can be 0.1μF. Specifically, the capacitor C1 and the capacitor C2 are connected in parallel, one end of the parallel circuit is grounded, and the other end is connected to the power access terminal VCC_3V3 and the controller U1, which not only makes the DC output of the power supply to the controller U1 smooth and stable, and reduces the influence of the alternating pulsating current on the controller U1, but also absorbs the current fluctuations generated during the operation of the electronic circuit and the interference connected through the AC power supply, so that the working performance of the electronic circuit is more stable. The combination of the capacitor C1 and the capacitor C2 in parallel can also improve the working effect of the filter capacitor.

[0024] In one embodiment, the type of controller U1 can be a single-chip microcomputer, CPLD (Complex Programmable Logic Device) or FPGA (Field-Programmable Gate Array). A single-chip microcomputer is an integrated circuit chip that uses ultra-large-scale integrated circuit technology to integrate a central processing unit CPU with data processing capabilities, random access memory RAM, read-only memory ROM, multiple I / O ports and interrupt systems, timers / counters and other functions on a silicon chip to form a small and complete microcomputer system. The single-chip microcomputer integrates various functional components on one chip, and adopts a bus structure internally, which reduces the connection between chips and greatly improves the reliability and anti-interference ability of the single-chip microcomputer. Therefore, it has the advantages of small size, simple structure and high reliability. In addition, although the single-chip microcomputer has a relatively simple structure, it has more I / O ports, can perform arithmetic operations, logical operations and bit operations, etc., and has strong control capabilities. CPLD is a digital integrated circuit that users can construct logic functions according to their needs. It has the advantages of flexible programming, high integration, short design and development cycle, wide application range, low design and manufacturing cost, strong confidentiality, and popular price. In addition, since CPLD is programmed at the logic block level, the interconnection between its logic blocks is lumped, so CPLD is fast and has greater time predictability. FPGA is a semi-custom circuit in the field of application-specific integrated circuits. It is based on logic gates and triggers, and can realize parallel task processing in the true sense. FPGA does not use an operating system, has deterministic hardware for each task, low design cost, and high working stability. It can be understood that in this embodiment, CPLD, FPGA or single-chip microcomputer can realize the function of controller U1, that is, to analyze the signal output by the demodulation circuit 10, and issue corresponding control instructions to the controlled device to control the controlled device to complete the corresponding action.

[0025] The model of the controller U1 is not unique. In this embodiment, a controller of model C8051F330 can be used. It can be understood that in other embodiments, other models of controllers U1 can also meet the requirements as long as they can implement the analysis of radio frequency signals and complete the corresponding control functions. Specifically, in this embodiment, if Figure 2 As shown, the GND pin of the controller U1 is grounded, and the VDD pin of the controller U1 is connected to the power access terminal VCC_3V3 through the voltage stabilizing filter circuit 201, which is used to access the power required for the normal operation of the controller U1; the P1.2 pin of the controller U1 is connected to the DOUT pin of the wireless receiving chip U5, which is used to receive the digital signal output by the wireless receiving chip U5 to control the controlled device.

[0026] In one embodiment, the control circuit 20 is also used to parse the received radio frequency signal to obtain address information, and pair with the remote control according to the address information. The control circuit 20 can learn to pair with different remote control addresses. And address parsing and resetting are implemented according to certain rules, and the learned new address will be saved and will not be lost when the power is off. Specifically, the control circuit 20 also includes an indicator light and a button, and the indicator light and the button are both connected to the controller U1. The indicator light is connected to the P1.7 pin and the P1.6 pin of the controller U1, and the button is connected to the P1.5 pin of the controller U1. The button sends a pairing instruction to the controller U1, and the controller U1 learns and pairs the remote control address for the received pairing instruction, and can complete the judgment and parsing of the boot code, key code and end code. Since the signal parsing is completed inside the controller U1, the complexity of the circuit design is reduced by software decoding, thereby reducing the circuit design area and improving portability. The controller U1 controls the indicator light to feedback prompt information to the customer, and the user can obtain the pairing status of the control circuit 20 and the remote control according to the prompt information, and perform the next operation according to the pairing status, thereby improving the working stability of the automatic control circuit.

[0027] In one embodiment, there are two indicator lights, and the prompt information sent by the controller U1 is reflected by the color change and / or flashing state of the indicator lights. When the color and flashing state of the two indicator lights change, it means that the working state of the controller U1 has changed. The different states of the indicator lights represent the different working states of the controller U1, so that the different working state information of the controller U1 can be accurately fed back to the customer, which is convenient for the customer to operate. Specifically, in the initial state, both indicator lights are in the blue flashing state, indicating that the control circuit 20 has not yet worked normally. At this time, press and hold the button for 3 seconds. When the two indicator lights turn red and blue lights are always on, it means that the boot is complete. After the power-on is completed and the button is released, if the control circuit 20 has a paired remote control at this time, the red light will be in a constant light state. If the control circuit 20 does not have a paired remote control at this time, the blue light will flash, and the remote control needs to be paired: first, when the blue light is in a flashing state, press and hold the switch button for 3 seconds, then the indicator light changes from flashing blue light to red light and blue light is always on, continue to press and hold the switch button for 3 seconds, when the automatic control circuit is already in pairing mode, the blue indicator light starts to flash, and the button can be released at this time; then the automatic control circuit will enter the learning mode, and when any button of the current remote control is pressed, the indicator light changes to a blue light off and a red light always on state, at this time prompting the user that the automatic control circuit has completed the pairing of the remote control address and can be used normally. When the remote control needs to be replaced, the above steps can be repeated to learn the new remote control address. The control circuit 20 can learn and adapt the remote control according to the parsed address information, and save the new address to the memory. After the automatic control circuit is powered on again, the saved remote control address information will not be lost, which can avoid repeated pairing of the same remote control address, simplify the use steps, and improve the convenience of use.

[0028] In addition, when the automatic control circuit is successfully paired with the remote control, the working status of the automatic control circuit can also be fed back to the user through the changing state of the indicator light. Specifically, when the remote control address is not matched correctly, after pressing the button of the remote control, the blue light will flash twice, thereby prompting the user that this remote control is not the remote control paired with the current automatic control circuit. The user can change the remote control or re-pair the automatic control circuit with the current remote control. When the key command is not supported, after pressing the button of the remote control, the blue light will flash three times, thereby prompting the user that the current remote control address is matched correctly, but the command is not supported, and you can try to press other buttons of the remote control. When the instruction is received correctly, after pressing the button of the remote control, the indicator light will light up blue once, and then the red light will be on, thereby prompting the user that the automatic control circuit has received the instruction correctly and can perform normal control functions. The changes in the indicator light can accurately reflect the matching status of the automatic control circuit, thereby guiding the user to perform further operations and ensuring the working accuracy of the automatic control circuit.

[0029] In one embodiment, see Figure 3 The automatic control circuit also includes a power supply circuit 30, which is connected to the control circuit 20. The power supply circuit 30 connects the external power supply VCC_BAT and the control circuit 20, and is used to perform certain processing on the external power supply VCC_BAT before supplying power to the control circuit 20, which is conducive to the stable operation of the control circuit 20.

[0030] Specifically, in one embodiment, Figure 4 As shown, the power supply circuit 30 includes a power control chip U4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8. The model of the power control chip U4 is not unique. In this embodiment, a power control chip of model LP2981-33DBVR can be used. It can be understood that in other embodiments, other models of power control chips that can manage and control electric energy are also considered to meet the requirements. Specifically, in this embodiment, the IN pin of the power control chip U4 is connected to the external power supply VCC_BAT, the capacitor C5 and the capacitor C6, one end of the capacitor C5 is connected to the external power supply VCC_BAT and the IN pin of the power control chip U4, and the other end is grounded, one end of the capacitor C6 is connected to the external power supply VCC_BAT and the IN pin of the power control chip U4, and the other end is grounded; the GND pin of the power control chip U4 is grounded; the EN pin of the power control chip U4 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is grounded; the ADJ pin of the power control chip U4 is connected to one end of the capacitor C7, and the other end of the capacitor C7 is grounded; the OUT pin of the power control chip U4 is connected to the control circuit 20, specifically connected to the voltage stabilizing filter circuit 201 through the power access terminal VCC_3V3, for outputting the processed electric energy. Further, the value of the capacitor C5 is 1μF, the value of the capacitor C6 is 0.1μF, the value of the capacitor C8 is 1μF, and the value of the capacitor C7 is 0.1μF. The power supply circuit 30 can realize the conversion, distribution, detection and other power management functions of electric energy. In addition to achieving the purpose of supplying power to the control circuit 20, it can also enable the control circuit 20 to perform better working performance.

[0031] The above-mentioned automatic control circuit receives the radio frequency signal sent by the remote control through the demodulation circuit and automatically demodulates it without intervention. The demodulated radio frequency signal is sent to the control circuit and then analyzed and processed by the control circuit. The control circuit controls the electrical equipment according to the analyzed signal, making the electrical equipment convenient and reliable to use.

[0032] The automatic control circuit includes a demodulation circuit 10 and a control circuit 20, and has two functions: wireless decoding and logic control. The demodulation circuit 10 can automatically demodulate the radio frequency signal without intervention, and the control circuit 20 has programmable, software decoding and customized logic control functions. The demodulation circuit 10 and the control circuit 20 can be integrated with the peripheral circuit on the same circuit board, with the characteristics of high integration, and can be applied to devices with small space. It can complete the automatic control function of complex logic and meet the design of more products with wireless control requirements. Since wireless communication is used for remote control, the automatic control circuit can also increase the safe operating distance and improve production safety.

[0033] In one embodiment, a control device is provided, which includes an automatic control circuit and a remote controller, wherein a demodulation circuit of the automatic control circuit is wirelessly connected to the remote controller. Specifically, the automatic control circuit includes a demodulation circuit and a control circuit. The demodulation circuit is used to receive a radio frequency signal sent by the remote controller for demodulation, and send the demodulated radio frequency signal to the control circuit; the control circuit connects the demodulation circuit with a controlled device, and is used to analyze the demodulated radio frequency signal, and control the controlled device according to the analyzed signal.

[0034] The control circuit is also used to learn to pair different remote control addresses, and implement address resolution and resetting according to certain rules. After learning a new address, it will be saved, and the saved new address will not be lost after power failure. After receiving the RF signal sent by the remote control, the demodulation circuit can automatically demodulate it without intervention, and send the demodulated RF signal to the control circuit. The control circuit controls the electrical equipment according to the resolved RF signal, making the electrical equipment convenient and reliable to use.

[0035] The control device includes an automatic control circuit and a remote controller, and can realize corresponding control functions according to the instructions of the remote controller. The control device can increase the convenience of use of the electrical equipment and improve the reliability.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic control circuit, characterized in that: The automatic control circuit comprises: A demodulation circuit, used for receiving a radio frequency signal sent by a remote controller, demodulating the signal, and sending the demodulated radio frequency signal to a control circuit; A control circuit, used for analyzing the demodulated radio frequency signal and controlling the controlled device according to the analyzed signal; the control circuit is connected to the demodulation circuit and used for connecting to the controlled device; A power supply circuit is connected to an external power supply and the control circuit, and is used to process the external power supply before supplying power to the control circuit; the power supply circuit includes a power supply control chip U4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8; the IN pin of the power supply control chip U4 is connected to the external power supply, the capacitor C5 and the capacitor C6, one end of the capacitor C5 is connected to the external power supply and the IN pin of the power supply control chip U4, and the other end is grounded, one end of the capacitor C6 is connected to the external power supply and the IN pin of the power supply control chip U4, and the other end is grounded; the power supply control The GND pin of the control chip U4 is grounded; the EN pin of the power control chip U4 is connected to one end of the capacitor C8, and the other end of the capacitor C8 is grounded; the ADJ pin of the power control chip U4 is connected to one end of the capacitor C7, and the other end of the capacitor C7 is grounded; the OUT pin of the power control chip U4 is connected to the control circuit, specifically connected to the voltage stabilizing filter circuit through the power access terminal, the value of the capacitor C5 is 1μF, the value of the capacitor C6 is 0.1μF, the value of the capacitor C8 is 1μF, and the value of the capacitor C7 is 0.1μF; The control circuit includes a controller and a voltage stabilizing filter circuit, wherein the controller is connected to the demodulation circuit and the controlled device, the voltage stabilizing filter circuit is connected to the controller, and the voltage stabilizing filter circuit is also used to connect to the power input terminal; the voltage stabilizing filter circuit is connected to the voltage input from the power input terminal for voltage stabilization and filtering to supply power to the controller; The voltage stabilizing filter circuit comprises a capacitor C1 and a capacitor C2, wherein one end of the capacitor C1 is grounded and the other end is connected to the power input end and the controller; one end of the capacitor C2 is grounded and the other end is connected to the power input end and the controller; The control circuit is also used to parse the received radio frequency signal to obtain address information, and pair with the remote control according to the address information; the control circuit also learns to pair with different remote control addresses, and implements address parsing and resetting according to a certain rule, and the learned new address will be saved and will not be lost when the power is off; The control circuit also includes an indicator light and a button, both of which are connected to the controller; the button sends a pairing instruction to the controller, and the controller learns and pairs the remote control address based on the received pairing instruction, and completes the judgment and analysis of the guide code, key code and end code; The controller feeds back prompt information to the user by controlling the indicator light, so that the user can obtain the pairing status of the control circuit and the remote controller according to the prompt information and perform the next operation according to the pairing status; There are two indicator lights, and the prompt information sent by the controller is reflected by the color change and / or flashing state of the indicator lights; different states of the indicator lights represent different working states of the controller; in the initial state, both indicator lights are in the blue flashing state, indicating that the control circuit has not yet worked normally, at this time, long press the button for 3 seconds, when the two indicator lights turn red and the blue lights are always on, it means that the power-on is complete; after the power-on is completed and the button is released, if the control circuit has a paired remote control, the red light is always on, if the control circuit does not have a paired remote control, the blue light flashes, and the remote control needs to be used for pairing: first First, when the blue light is flashing, long press the button for 3 seconds, then the indicator light changes from flashing blue to red and then always on, continue to long press the button for 3 seconds, when the automatic control circuit is already in pairing mode, the blue indicator light starts to flash, at this time you can release the button; then the automatic control circuit will enter the learning mode, when any button of the current remote control is pressed, the indicator light changes to blue light off and red light always on, at this time prompting the user that the automatic control circuit has completed the pairing of the remote control address and can be used normally; when the automatic control circuit is successfully paired with the remote control, the changing state of the indicator light is also used to characterize the working state of the automatic control circuit.

2. The automatic control circuit according to claim 1, characterized in that: The demodulation circuit includes a wireless receiving chip, an antenna, a filtering circuit and a resonator. The wireless receiving chip is connected to the control circuit and is connected to the antenna through the filtering circuit. The resonator is connected to the wireless receiving chip.

3. The automatic control circuit according to claim 2, characterized in that: The filtering circuit includes an inductor L1, an inductor L2, a capacitor C11 and a capacitor C9, one end of the inductor L1 is connected to the antenna, and the other end is grounded; one end of the inductor L2 is connected to the antenna, and the other end is grounded; one end of the capacitor C11 is connected to the antenna, and the other end is grounded; one end of the capacitor C9 is connected to the antenna, and the other end is connected to the wireless receiving chip, and is grounded through the inductor L2.

4. The automatic control circuit according to claim 1, characterized in that: The controller is a single chip microcomputer, CPLD or FPGA.

5. A control device, characterized in that: It comprises a remote controller and an automatic control circuit as claimed in any one of claims 1 to 4, wherein a demodulation circuit of the automatic control circuit is wirelessly connected to the remote controller.

Images