Electric appliance direct current communication control system

Abstract

The utility model provides an electric appliance DC communication control system. The system comprises a DC 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] This utility model relates to the field of DC circuit communication technology, and in particular to an electrical DC communication control system. Background Technology

[0002] Currently, the communication technologies used in wired control products on the market can be roughly categorized as follows:

[0003] 1) For 4-wire control methods, such as DMX, serial port, 485, SPI, I2C, etc., in addition to the 2 power cables, at least 2 more cables are needed for communication. For example, for DMX control, in addition to the power cable, the customer needs to connect 2 extra cables. In the wiring process, in addition to distinguishing the positive and negative of the power supply, it is also necessary to distinguish the direction of the communication cable. The wiring is too complicated and increases the time cost of wiring.

[0004] 2) Three-wire control, such as single-wire control, requires an additional wire in addition to the positive DC+ and negative DC- of the DC power supply, which also incurs additional costs and is susceptible to interference.

[0005] 3) Power line carrier control, if using additional expensive components, requires adding extra costly components to each product and controller to couple the signal to the power line. The terminal then decodes the signal via the power line to complete communication. This method is susceptible to line interference and differences between brands, which can lead to deviations during decoding. Therefore, designing an electrical DC communication control system is essential. Utility Model Content

[0006] The purpose of this invention is to provide an electrical DC communication control system that uses only two lines to power and communicate with the controlled electrical appliances, thereby shortening the production cycle and reducing production costs.

[0007] To achieve the above objectives, this utility model provides the following solution:

[0008] An electrical appliance DC communication control system includes: 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 regulator circuit, a signal receiver, a first MCU, and a switching module; the voltage regulator 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 switching module respectively; the switching 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 periodic square wave signals.

[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 Wi-Fi 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 switching module is electrically connected to the negative terminal of the DC power supply, the negative terminal of the controlled electrical appliance is connected to the negative output terminal of the switching module, and the positive terminal of the controlled electrical appliance is connected to the positive terminal of the DC power supply.

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

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

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

[0017] According to specific embodiments provided by this utility model, the following technical effects are disclosed: The electrical DC communication control system provided by this utility model includes: 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, RF remote control device, signal generator, and 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 regulator circuit, a signal receiver, a first MCU, and a switching module; the voltage regulator 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 switching module respectively, the switching 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. This system controls the transmission of square wave signals through the switching module, achieving data reception with only two lines and without the need for additional components, reducing production costs, shortening the production cycle, and expanding the application scope. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the electrical DC communication control system of this utility model;

[0020] Figure 2 This is a structural diagram showing the connection between the switch module of this utility model and the negative terminal of the DC power supply;

[0021] Figure 3 This is a structural diagram showing the connection between the switch module of this utility model and the positive terminal of the DC power supply.

[0022] Reference 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 regulator circuit; 42. Signal receiver; 421. Wired signal receiver; 422. Wireless signal receiver; 43. First MCU; 44. Switching module; 5. Controlled electrical appliance. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this utility model provides an electrical DC communication control system, including: 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 Wi-Fi unit and a Bluetooth unit. The RF remote control device 2 is also equipped with several control buttons, each of which is used to send different control command signals.

[0027] like Figure 2 and Figure 3 As shown. The main control board 4 includes: a voltage regulator circuit 41, a signal receiver 42, a first MCU 43, and a switching module 44; the voltage regulator 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 switching module 44 respectively; the switching module 44 is electrically connected to the DC power supply 1 and the controlled electrical appliance 5 respectively; 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. After being transmitted to the first MCU 43, they generate corresponding periodic square wave signals. The periodic square wave signals control the on / off state of the switch module 44, thereby transmitting the control commands to the controlled electrical appliance 5, which then performs the corresponding control actions.

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

[0030] Furthermore, the switching module 44 is a metal-oxide-semiconductor field-effect transistor (MOSFET) or an insulated-gate bipolar transistor (IGBT). The switching module 44 represents different data signals by varying the on / off times. These 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 19ms for the high-level period and 1ms for the low-level period; the on / off time of the data transmission start signal is 4ms for the high-level period and 200μs for the low-level period; the on / off time of the digital "1" signal is 3ms for the high-level period and 200μs for the low-level period; and the on / off time of the digital "0" signal is 2ms for the high-level period and 200μs for the low-level period.

[0031] Furthermore, in this embodiment, the switching module 44 operates as follows: after generating a synchronization signal and transmitting it to the controlled electrical appliance 5, it first sends a data transmission start signal to prepare the controlled electrical appliance 5 to receive data. Then, it controls the on / off state of the switching module 44 based on the digital "1" and digital "0" signals. The switching module 44 uses a half-bridge drive method, which shortens the time for the high-level signal to change to a low-level signal, allowing the entire switching module 44 to complete the level change in a short time. The disconnection time of the switching 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. Each controlled electrical appliance 5 is equipped with a second MCU. The operating voltage of the second MCU is 1.8V to 5V, the operating current of the second MCU is 25mA to 35mA, and a 30μF or 100μF capacitor is provided at the front end of the second MCU to keep the operating time of the second MCU within 300ms.

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

[0034] The beneficial effects of this utility model 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 still be transmitted normally, which greatly improves the transmission efficiency.

[0036] 2) It simplifies the control circuit, eliminates unnecessary control lines, greatly reduces production costs, and shortens the production cycle.

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

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electrical DC communication control system, characterized in that, include: The system includes a DC power supply, an RF remote control device, a signal generator, a main control board, and controlled electrical appliances; the DC power supply, the RF remote control device, the signal generator, and the controlled electrical appliances are all electrically connected to the main control board, and the controlled electrical appliances are connected to the DC power supply. The main control board includes: a voltage regulator circuit, a signal receiver, a first MCU, and a switching module; The voltage regulator circuit is electrically connected to the DC power supply and the first MCU, the first MCU is electrically connected to the signal receiver and the switching module, the switching module is electrically connected to the DC power supply and the controlled electrical appliance, and the signal receiver is electrically connected to the RF remote control device and the signal generator. The first MCU is used to generate periodic square wave signals; The switching module is connected to either the negative or positive terminal of the DC power supply. When the switching module is electrically connected to the negative terminal of the DC power supply, the negative terminal of the controlled electrical appliance is connected to the negative output terminal of the switching module, and the positive terminal of the controlled electrical appliance is connected to the positive terminal of the DC power supply. When the switching module is electrically connected to the positive terminal of the DC power supply, the positive terminal of the controlled electrical appliance is connected to the positive output terminal of the switching module, and the negative terminal of the controlled electrical appliance is connected to the negative terminal of the DC power supply, so that the controlled electrical appliance receives the square wave signal emitted by the switching module.

2. The electrical 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 Wi-Fi unit and a Bluetooth unit.

3. The electrical 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 DC communication control system according to claim 1, characterized in that, There are several controlled electrical appliances, and each controlled electrical appliance is equipped 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.

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

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