CN219678714U - Wireless control silicon controlled rectifier light modulator - Google Patents

Abstract

A wireless control silicon controlled dimmer comprises a trigger circuit, a control circuit and a wireless communication module; dimming and switching of the load lamp are achieved by using a bidirectional thyristor (T1) and a relay (K1). The singlechip (U3) controls and outputs PWM pulse signals and high and low levels through detecting zero crossing signals of the optocoupler (PH 1), and controls the switching of the silicon controlled dimming and relay through the silicon controlled optocoupler (U5). The wireless Bluetooth communication module (U4) communicates with the singlechip (U3) through a serial port, and can realize local control and remote control through keys on equipment and application APP.

Description

Wireless control silicon controlled rectifier light modulator

Technical Field

The utility model relates to a dimmer, in particular to a wireless control silicon controlled rectifier dimmer.

Background

In recent years, high-brightness LED illumination is gradually replacing conventional light sources such as incandescent lamps, fluorescent lamps, and the like with advantages of high light efficiency, long lifetime, high reliability, no pollution, and the like. Also, in some applications, there is often a need for a function of adjusting the brightness of the light to further save energy and provide comfortable illumination, whereas conventional silicon controlled dimmers can only simply be manually adjusted to turn a knob.

Disclosure of Invention

In order to solve the above problems, the present utility model aims to provide a scr dimmer which can realize local control and can also perform remote control through wireless communication modes such as wifi and bluetooth.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a wireless control silicon controlled dimmer comprises a trigger circuit, a control circuit and a wireless communication module; the trigger circuit comprises a bidirectional thyristor (T1) and a relay (K1); the control circuit comprises a singlechip (U3), a detection optocoupler (PH 1) and a silicon controlled optocoupler (U5), wherein the singlechip (U3) controls the bidirectional silicon controlled rectifier (T1) and the relay (K1) through the silicon controlled optocoupler (U5); the wireless communication module is a wireless Bluetooth communication module (U4) and is communicated with the singlechip (U3) through a serial port.

Further, the wireless control silicon controlled rectifier dimmer is provided with a piezoresistor (RT 1) and a fuse tube (FR 1).

Furthermore, the wireless control silicon controlled rectifier dimmer adopts MPX/MKP X2 104 safety X capacitor and 1mH type inductor to form an EMI prevention circuit.

Further, the power supply end of the wireless Bluetooth communication module (U4) and the power supply end of the singlechip (U3) are connected with a non-isolated buck circuit (U1), the input end of the wireless Bluetooth communication module is connected with a PI type filter circuit, and the PI type filter circuit consists of a capacitor (C3), an inductor (L1) and an electrolytic capacitor (EC 1).

Further, the wireless Bluetooth communication module (U4) is a wireless WIFI+BLE module designed by adopting a latest WIFI SOC YGW01 chip, the chip integrates BLE5.0, an internal integrated MCU, a main frequency 320MHz and a built-in 384KB SRAM and 128K ROM.

Furthermore, the serial port communication mode between the wireless Bluetooth communication module (U4) and the singlechip (U3) is interactive to be full duplex communication design, and the communication protocol is set to be a private protocol.

The beneficial effects of the utility model are as follows: (1) The controllable silicon dimmer realizes reliable remote control and local control, and can control the light source in real time through wireless communication modes such as wifi, bluetooth and the like and external control equipment such as mobile phone APP or a sound box and the like. (2) The silicon controlled rectifier dimmer is controlled by a digital circuit, has the functions of high efficiency, energy conservation and accurate dimming, and is suitable for multiple fields such as houses, businesses, offices and the like. (3) The silicon controlled rectifier dimmer has various protection mechanisms such as overload protection, overheat protection, overcurrent protection and the like, and improves the safety and stability of the silicon controlled rectifier dimmer.

Drawings

Fig. 1 is a schematic diagram of the system of the present utility model.

Description of the embodiments

Specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

As shown in fig. 1, a wireless controlled thyristor dimmer according to the present utility model uses a triac (T1) and a relay (K1) to implement dimming and switching of a load lamp. The singlechip (U3) controls and outputs PWM pulse signals and high and low levels through detecting zero crossing signals of the optocoupler (PH 1), and controls the switching of the silicon controlled dimming and relay through the silicon controlled optocoupler (U5). The wireless Bluetooth communication module (U4) communicates with the singlechip (U3) through a serial port, and can realize local control and remote control through keys on equipment and application APP. The APP can control the switch and the brightness of the load lamp, the brightness range is 1% -100%, and the load lamp can be an LED lamp, an incandescent lamp or a halogen lamp; a countdown may be set for 24 hours, to minutes; the power-off, power-on and restart state can be set; an unconnected network for more than 3 minutes can automatically return to the router; the reset mode is to press the switch key for 5 seconds for a long time, and the indicator lights flash to prompt.

The wireless control silicon controlled dimmer adopts a piezoresistor (RT 1) to form an anti-surge circuit, and is mainly used for protecting transient voltage in the circuit, such as lightning stroke, surge, ringing wave and other test protection, when the input voltage exceeds a use threshold value, the piezoresistor shows clamping characteristics, and the excessively high voltage is pulled down, so that the later-stage circuit works in a safe voltage range. The device can be repeatedly used for many times, and the economic applicability of the device is improved. The wireless control silicon controlled dimmer adopts a fuse tube (FR 1), is mainly used for protecting the action of a later-stage circuit, and can respond immediately and has high safety when the current passing through the fuse tube is larger than the fusing current of the fuse tube and the fuse is fused when abnormal faults such as overlarge load current and L/N short circuit occur, so that an input circuit is cut off, flame, electric arc or gas cannot be generated when the circuit is fused and disconnected. An EMI prevention circuit is formed by adopting an MPX/MKP X2 104 safety X capacitor and a 1mH I-type inductor, so that the safety certification requirements of European and American regulations can be met.

The wireless Bluetooth communication module (U4) and the singlechip (U3) are powered by a non-isolated buck circuit (U1), and the chip has the advantages of simple peripheral devices, low cost, high dynamic response speed, low idle standby power consumption of 20mW, high switching frequency (45 KHz), and capability of obviously reducing audible noise in system operation during multi-mode PWM control and operation, and integrates a complete protection function with a self-recovery function: VDD under-voltage protection, output over-voltage protection, cycle-by-cycle current limitation, abnormal over-current protection, overheat protection, overload protection, etc. In addition, the PI type filter circuit is adopted as the input, and consists of a capacitor (C3), an inductor (L1) and an electrolytic capacitor (EC 1), so that the work is more stable, and the EMI authentication requirement is easier to pass. The power supply circuit can completely meet the power supply requirements of the module and the singlechip, so that the power supply circuit can work stably.

The wireless control silicon controlled dimmer adopts a bidirectional silicon controlled rectifier (T1) to carry out dimming control on a load lamp, the reverse peak voltage is 800V, the on-state current is 16A, the maintaining current is lower than 25mA, the on-off state is determined by a control electrode G, positive pulse (or negative pulse) is added on the control electrode G to enable the control electrode G to conduct in the forward direction (or the reverse direction), high-power equipment is controlled by mA-level current, the reaction is extremely fast, the control electrode is switched on and off in microsecond level and operates in a contactless mode, and no spark and noise are generated. Under low brightness, LC connected in series with the load lamp can generate oscillation, if the minimum current during oscillation is lower than the maintaining current, the bidirectional thyristor can be abnormally closed, so that the lamp flashes or power jump occurs when dimming, and the problem can be effectively improved by adding a silicon T1/RC (51R and 10nF 1 KV) absorption loop at two ends of the controllable T2. The relay (K1) adopts HF46F, has the contact switching capability of 5A, resists surge voltage of 10KV between a coil and a contact, meets the VDE0631 reinforced insulation requirement, and can effectively control the output of the singlechip.

The wireless control silicon controlled dimmer adopts a singlechip (U3) to detect zero crossing signal input, outputs PWM signals and high and low levels to respectively control the silicon controlled dimmer and a relay switch, and communicates with a wireless Bluetooth communication module (U4) through a serial port, so that the reliable operation of the whole circuit is realized. The zero crossing signal is detected and used for an optocoupler EL817 (PH 1), the LIN/NIN voltage signal is reduced by a resistor and then rectified to an input end of the optocoupler by a bridge rectifier MB10S (BD 2), and the output end transmits the signal to a singlechip (U3) by controlling a switch of SS8050 (Q4). Because LIN/NIN clutter is larger, and a large capacitor exists in a power supply part, if the power supply part only adopts a diode plus resistor to reduce voltage to input and detect the singlechip, the detection signal can not completely pass through zero, and the singlechip (U3) outputs errors, which is the reason for adopting an optocoupler to carry out the zero-crossing detection signal at the position, by adopting the mode, the singlechip (U3) can normally detect the zero-crossing signal and output correct signals. The output of the singlechip (U3) is divided into 2 parts, namely a first part and a PIN4 PIN output high-low level, and the switch of the relay is controlled to realize double protection. And secondly, the PIN3 outputs a PWM signal, and the switching of the field effect transistor (Q2) is controlled by outputting the PWM pulse signal so as to control the input of the silicon controlled optocoupler (U5) and further control the switching of the bidirectional silicon controlled rectifier (T1). The silicon controlled optocoupler (U5) isolates the voltage signals of the input end and the control end, so that the reference point of the control signal is isolated from the input end, and the work is stable and safe.

The singlechip (U3) and the wireless Bluetooth communication module (U4) are communicated in a serial port communication mode, the interaction is designed for full duplex communication, and a communication protocol is set to be a private protocol. The specific communication protocol is as follows: serial communication convention: baud rate: 115200/data bits: 8/parity check: no/stop bit: 1/data flow control: and no. The singlechip (U3) acquires data issued by the module through the serial port and controls the brightness and the switch of the load lamp, thereby realizing local control and remote control.

The wireless control silicon controlled rectifier dimmer adopts a wireless Bluetooth communication module (U4) to realize remote and local control, the module is a wireless WIFI+BLE module designed by adopting a latest WIFI SOC YGW01 chip, the chip integrates BLE5.0, an internal integrated MCU, a main frequency 320MHz and a built-in 384KB SRAM and 128K ROM. The wireless communication system works in the frequency band of 2.4GHz and supports the 802.11/b/g/n wireless standard. The WLAN characteristics mainly include: support H20/H40; two working modes of STA/AP are supported; supporting a WEP\WPA/WPA2 security mode; supporting Over The Air (OTA); and the PCB board or external antenna is supported, so that the compatibility and the performance are high. The Bluetooth characteristics are as follows: bluetooth BLE5.0 is embedded; adopting an AFH mode; support to use with WIFI at the same time; supporting simultaneous accept/broadcast/scan modes of operation; supporting SIG Mesh V1.01 protocol; the GATT and Mesh protocols are supported.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiment, and one skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the utility model, and the equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (6)

1. A wireless control silicon controlled dimmer, characterized in that: the wireless communication device comprises a trigger circuit, a control circuit and a wireless communication module; the trigger circuit comprises a bidirectional thyristor (T1) and a relay (K1); the control circuit comprises a singlechip (U3), a detection optocoupler (PH 1) and a silicon controlled optocoupler (U5), wherein the singlechip (U3) controls the bidirectional silicon controlled rectifier (T1) and the relay (K1) through the silicon controlled optocoupler (U5); the wireless communication module is a wireless Bluetooth communication module (U4) and is communicated with the singlechip (U3) through a serial port.

2. A wirelessly controlled thyristor dimmer according to claim 1, wherein: the wireless control silicon controlled dimmer is provided with a piezoresistor (RT 1) and a fuse tube (FR 1).

3. A wirelessly controlled thyristor dimmer according to claim 1, wherein: the wireless control silicon controlled dimmer adopts MPX/MKP X2 104 safety X capacitor and 1mH I-type inductor to form an EMI prevention circuit.

4. A wirelessly controlled thyristor dimmer according to claim 1, wherein: the wireless Bluetooth communication module (U4) and the power supply end of the singlechip (U3) are connected with a non-isolated buck circuit (U1), the input end of the wireless Bluetooth communication module is connected with a PI type filter circuit, and the PI type filter circuit consists of a capacitor (C3), an inductor (L1) and an electrolytic capacitor (EC 1).

5. A wirelessly controlled thyristor dimmer according to claim 1, wherein: the wireless Bluetooth communication module (U4) is a wireless WIFI+BLE module designed by adopting a latest WIFI SOC YGW01 chip, the chip integrates BLE5.0, an internal integrated MCU, a main frequency 320MHz and a built-in 384KB SRAM and 128K ROM.

6. A wirelessly controlled thyristor dimmer according to claim 1, wherein: the serial port communication mode between the wireless Bluetooth communication module (U4) and the singlechip (U3) is interactive to be full duplex communication design, and the communication protocol is set to be a private protocol.