Electric appliance direct current communication control system

Abstract

The invention provides an electric appliance direct current communication control system. The system comprises a direct current power supply, an RF remote control device, a signal generator, a main control board and a controlled electric appliance. The direct-current power supply, the RF remote control device, the signal generator and the controlled electric appliance are all electrically connected with the main control board, and the controlled electric appliance is connected with the direct-current power supply; the main control board comprises a voltage stabilizing circuit, a signal receiver, a first MCU and a switch module. The voltage stabilizing circuit is electrically connected with the direct-current power supply and the first MCU, the first MCU is electrically connected with the signal receiver and the switch module, the switch module is electrically connected with the direct-current power supply and the controlled electric appliance, and the signal receiver is electrically connected with the RF remote control device and the signal generator. According to the system, transmission of square wave signals is controlled through the switch module, data receiving is achieved on the premise that only two lines are needed and extra redundant devices do not need to be added, the production cost is reduced, the production period is shortened, and the application range is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of direct current circuit communication, and in particular to an electrical appliance direct current communication control system. Background Art

[0002] Currently, there are roughly the following types of wired control product communication technologies on the market:

[0003] 1) 4-wire mode, such as DMX, serial port, 485, SPI, I2C and other control, in addition to the two power lines, at least two lines are required for communication. For example, for DMX control, in addition to the power line, the customer also needs two additional lines. During the wiring process, in addition to distinguishing the positive and negative power lines, it is also necessary to distinguish the direction of the communication line. The wiring is too cumbersome, which increases the time cost of wiring;

[0004] 2) 3-wire control, such as single-wire control, requires an additional wire in addition to the positive wire DC+ and negative wire DC- of the DC power supply, which also requires additional cost and is easily interfered;

[0005] 3) Power carrier control, such as through additional expensive components, each product and controller needs to add additional expensive components, through these components, the signal is coupled to the power line, and the terminal completes the communication through power line decoding. This method is easily affected by the line and the differences between different brands, which may cause deviations in the decoding process. Therefore, it is very necessary to design an electrical DC communication control system. Summary of the invention

[0006] The purpose of the present invention is to provide an electrical appliance DC communication control system, which realizes power supply and communication of the controlled electrical appliance through only two lines, so as to shorten the production cycle and reduce the production cost.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] An electrical appliance DC communication control system comprises: a DC power supply, an RF remote control device, a signal generator, a main control board and a controlled electrical appliance; the DC power supply, the RF remote control device, the signal generator and the controlled electrical appliance are all electrically connected to the main control board, and the controlled electrical appliance is connected to the DC power supply;

[0009] The main control board includes: a voltage stabilizing circuit, a signal receiver, a first MCU and a switch module; the voltage stabilizing circuit is electrically connected to the DC power supply and the first MCU respectively, the first MCU is electrically connected to the signal receiver and the switch module respectively, the switch module is electrically connected to the DC power supply and the controlled electrical appliance respectively, and the signal receiver is electrically connected to the RF remote control device and the signal generator respectively;

[0010] The first MCU is used to generate a periodic square wave signal.

[0011] Optionally, the signal generator includes: a wired signal generator and a wireless signal generator; the wired signal generator includes: a DMX512 controller and a DALI controller; the wireless signal generator includes: a wifi unit and a Bluetooth unit.

[0012] Optionally, the signal receiver includes: a wired signal receiver, a wireless signal receiver and an RF receiver.

[0013] Optionally, when the switch module is electrically connected to the negative pole of the DC power supply, the negative pole of the controlled electrical appliance is connected to the output negative pole of the switch module, and the positive pole of the controlled electrical appliance is connected to the positive pole of the DC power supply.

[0014] Optionally, when the switch module is electrically connected to the positive electrode of the DC power supply, the positive electrode of the controlled electrical appliance is connected to the output positive electrode of the switch module, and the negative electrode of the controlled electrical appliance is connected to the negative electrode of the DC power supply.

[0015] Optionally, there are several controlled electrical appliances, each of which is provided with a second MCU; the operating voltage of the second MCU is 1.8v-5v, and the operating current of the second MCU is 25mA-35mA.

[0016] Optionally, the switch module is a metal oxide semiconductor field effect transistor or an insulated gate bipolar transistor.

[0017] According to the specific embodiment provided by the present invention, the present invention discloses the following technical effects: the electrical appliance DC communication control system provided by the present invention comprises: a DC power supply, an RF remote control device, a signal generator, a main control board and a controlled electrical appliance; the DC power supply, the RF remote control device, the signal generator and the controlled electrical appliance are all electrically connected to the main control board, and the controlled electrical appliance is connected to the DC power supply; the main control board comprises: a voltage stabilizing circuit, a signal receiver, a first MCU and a switch module; the voltage stabilizing circuit is electrically connected to the DC power supply and the first MCU respectively, the first MCU is electrically connected to the signal receiver and the switch module respectively, the switch module is electrically connected to the DC power supply and the controlled electrical appliance respectively, and the signal receiver is electrically connected to the RF remote control device and the signal generator respectively. The system controls the transmission of square wave signals through the switch module, realizes data reception under the premise of only needing 2 lines and without adding extra redundant devices, reduces production costs, shortens production cycles, and expands the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a structural diagram of an electrical appliance DC communication control system of the present invention;

[0020] Figure 2 This is a structural diagram of the connection between the switch module of the present invention and the negative electrode of the DC power supply;

[0021] Figure 3 This is a structural diagram of the connection between the switch module of the present invention and the positive electrode of the DC power supply.

[0022] Figure numerals: 1. DC power supply; 2. RF remote control device; 3. Signal generator; 31. Wired signal generator; 32. Wireless signal generator; 4. Main control board; 41. Voltage stabilizing circuit; 42. Signal receiver; 421. Wired signal receiver; 422. Wireless signal receiver; 43. First MCU; 44. Switch module; 5. Controlled electrical appliance. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, the present invention provides an electrical appliance DC communication control system, comprising: a DC power supply 1, an RF remote control device 2, a signal generator 3, a main control board 4 and a controlled electrical appliance 5; the DC power supply 1, the RF remote control device 2, the signal generator 3 and the controlled electrical appliance 5 are all electrically connected to the main control board 4, and the controlled electrical appliance 5 is connected to the DC power supply 1.

[0026] Specifically, the signal generator 3 includes: a wired signal generator 31 and a wireless signal generator 32; the wired signal generator 31 includes: a DMX512 controller and a DALI controller; the wireless signal generator 32 includes: a wifi unit and a Bluetooth unit. The RF remote control device 2 is also provided with a plurality of control buttons, each of which is used to send a different control command signal.

[0027] like Figure 2 and Figure 3As shown. The main control board 4 includes: a voltage stabilizing circuit 41, a signal receiver 42, a first MCU 43 and a switch module 44; the voltage stabilizing circuit 41 is electrically connected to the DC power supply 1 and the first MCU 43 respectively, the first MCU 43 is electrically connected to the signal receiver 42 and the switch module 44 respectively, the switch module 44 is electrically connected to the DC power supply 1 and the controlled electrical appliance 5 respectively, and the signal receiver 42 is electrically connected to the RF remote control device 2 and the signal generator 3 respectively. The signal receiver 42 includes: a wired signal receiver 421, a wireless signal receiver 422 and an RF receiver.

[0028] It should be noted that the wired signal receiver 421, the wireless signal receiver 422 and the RF receiver respectively receive the control command signals sent by the wired signal generator 31, the wireless signal generator 32 and the RF remote control device 2, and then transmit them to the first MCU43 to generate corresponding periodic square wave signals, and control the on and off state of the switch module 44 through the periodic square wave signals, so that the control command is transmitted to the controlled electrical appliance 5, and the controlled electrical appliance 5 makes corresponding control actions.

[0029] Specifically, the switch module 44 can be connected to the negative pole (DC-) or the positive pole (DC+) of the DC power supply 1. When the switch module 44 is electrically connected to the negative pole of the DC power supply 1, the negative pole of the controlled electrical appliance 5 is connected to the output negative pole of the switch module 44, and the positive pole of the controlled electrical appliance 5 is connected to the positive pole of the DC power supply 1; when the switch module 44 is electrically connected to the positive pole of the DC power supply 1, the positive pole of the controlled electrical appliance 5 is connected to the output positive pole of the switch module 44, and the negative pole of the controlled electrical appliance 5 is connected to the negative pole of the DC power supply 1, so that the controlled electrical appliance 5 can receive the square wave signal emitted by the switch module 44.

[0030] Furthermore, the switch module 44 is a metal oxide semiconductor field effect transistor (MOS) or an insulated gate bipolar transistor (IGBT). The switch module 44 represents different data signals by the length of the on-off time, and the data signals include: a synchronization signal, a data transmission start signal, a digital "1" signal, and a digital "0" signal. The on-off time of the synchronization signal is closed (high level time) 19ms, and disconnected (low level time) 1ms; the on-off time of the data transmission start signal is closed 4ms, disconnected 200μs; the on-off time of the digital "1" signal is closed 3ms, disconnected 200μs; the on-off time of the digital "0" signal is closed 2ms, disconnected 200μs.

[0031] Furthermore, the working process of the switch module 44 in this embodiment is: after generating a synchronization signal and transmitting it to the controlled electrical appliance 5, first send a data transmission start signal to make the controlled electrical appliance 5 ready to receive data, and then control the on and off state of the switch module 44 according to the digital "1" signal and the digital "0" signal. The switch module 44 uses a half-bridge drive mode, which can shorten the time for a high level to become a low level, so that the entire switch module 44 can complete the level change in a short time. The disconnection time of the switch module 44 is extremely short, so it does not affect the normal operation of the controlled electrical appliance 5.

[0032] Specifically, there are several controlled electrical appliances 5, all of which are DC electrical products, and each controlled electrical appliance 5 is equipped with a second MCU; the operating voltage of the second MCU is 1.8v~5v, the operating current of the second MCU is 25mA~35mA, and a 30μF or 100μF capacitor is provided at the front end of the second MCU to maintain the operating time of the second MCU within 300ms.

[0033] The working principle of the present invention is: when the signal receiver receives a control command sent by a signal generator or an RF remote control device, the first MCU generates a periodic square wave signal corresponding to the control command and transmits it to the switch module. Different data signals are generated through different on-off times of the switch module, and are transmitted to the controlled electrical appliance through the positive or negative pole of the DC power supply. After receiving the signal, the controlled electrical appliance executes the corresponding control action.

[0034] The beneficial effects of the present invention are as follows:

[0035] 1) There are no special requirements for transmission distance and power during signal transmission. Even if the power supply voltage is severely distorted, the signal can be transmitted normally, which greatly improves the transmission efficiency;

[0036] 2) The control circuit is simplified and unnecessary control lines are removed, which greatly reduces production costs and shortens the production cycle.

[0037] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0038] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electrical appliance DC communication control system, characterized in that: include: A DC power supply, an RF remote control device, a signal generator, a main control board and a controlled electrical appliance; the DC power supply, the RF remote control device, the signal generator and the controlled electrical appliance are all electrically connected to the main control board, and the controlled electrical appliance is connected to the DC power supply; The main control board includes: a voltage stabilizing circuit, a signal receiver, a first MCU and a switch module; The voltage stabilizing circuit is electrically connected to the DC power supply and the first MCU respectively, the first MCU is electrically connected to the signal receiver and the switch module respectively, the switch module is electrically connected to the DC power supply and the controlled electrical appliance respectively, and the signal receiver is electrically connected to the RF remote control device and the signal generator respectively; The first MCU is used to generate a periodic square wave signal.

2. The electrical appliance DC communication control system according to claim 1, characterized in that: The signal generator includes: a wired signal generator and a wireless signal generator; the wired signal generator includes: a DMX512 controller and a DALI controller; the wireless signal generator includes: a wifi unit and a bluetooth unit.

3. The electrical appliance DC communication control system according to claim 1, characterized in that: The signal receiver includes: a wired signal receiver, a wireless signal receiver and an RF receiver.

4. The electrical appliance DC communication control system according to claim 1, characterized in that: When the switch module is electrically connected to the negative pole of the DC power supply, the negative pole of the controlled electrical appliance is connected to the output negative pole of the switch module, and the positive pole of the controlled electrical appliance is connected to the positive pole of the DC power supply.

5. The electrical appliance DC communication control system according to claim 1, characterized in that: When the switch module is electrically connected to the positive electrode of the DC power supply, the positive electrode of the controlled electrical appliance is connected to the output positive electrode of the switch module, and the negative electrode of the controlled electrical appliance is connected to the negative electrode of the DC power supply.

6. The electrical appliance DC communication control system according to claim 1, characterized in that: There are several controlled electrical appliances, each of which is provided with a second MCU; the operating voltage of the second MCU is 1.8v-5v, and the operating current of the second MCU is 25mA-35mA.

7. The electrical appliance DC communication control system according to claim 1, characterized in that: The switch module is a metal oxide semiconductor field effect transistor or an insulated gate bipolar transistor.

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