CN201639815U - Inductive dimmer switch - Google Patents

Abstract

The utility model discloses an inductive dimmer switch capable of realizing soft starting, dimming and off-site control. The inductive dimmer switch comprises a pyroelectric infrared switch, a soft-touch button switch, a zero crossing detection circuit and a silicon-controlled electronic switch, wherein the pyroelectric infrared switch, the soft-touch button switch and the zero crossing detection circuit are respectively connected to an input end of a microprocessor, and the silicon-controlled electronic switch is connected to an output end of the microprocessor.

Description

Inductive dimmer switch

Technical field The utility model relates to a circuit switch. In particular, it relates to an inductive dimming switch

Background Art Most of the existing intelligent control switches for lighting circuits have single functions, unsatisfactory use effects, or complex circuit structures. For example, inductive automatic switches for indoor lighting can realize automatic control but cannot simultaneously realize brightness adjustment. Moreover, they are all hard starts, and the large-scale mutation of the voltage when it is disconnected and closed is likely to cause impact damage to the load. And the reliability is not high.

The content of the utility model: the purpose of this utility model is to provide an inductive dimming switch, which can realize automatic or manual control, dimming and remote control of the lighting load by means of soft start.

The technical solution of the utility model includes a control circuit, an input detection switch, and the input detection switch includes at least one induction switch and at least one trigger switch respectively connected to the input end of the controller.

The controller is an intelligent controller, and the induction switch and the trigger switch are respectively a human body induction switch and a button switch connected to the input end of the intelligent controller.

The intelligent controller is composed of a microprocessor including an induction signal processing module, a button signal processing module, and a zero-crossing interrupt processing module, and a zero-crossing detection circuit and a driving circuit that are respectively connected to the input and output ends of the microprocessor. The human body induction switch and the button switch are respectively connected to the input ends of the induction signal processing module and the button signal processing module of the intelligent controller.

The human body induction switch and the button switch are respectively connected to the input ends of the pin 7 induction signal processing module and the pin 8 button signal processing module of the microprocessor.

The human body induction switch is a pyro-infrared switch, the button switch is a light-touch button switch, the driving circuit is a thyristor electronic switch, and the model of the microprocessor is 89C2051.

Two or more trigger switches are connected to the input terminal of the controller.

The utility model can carry out stepless adjustment to the brightness while controlling the constant brightness of the lighting load through the trigger switch, and can automatically turn on and turn off the control according to the activities of people in the room. The lighting load is turned on and off through the soft-start circuit in a gradual on and off manner, which avoids the impact damage of the load to the full voltage during frequent switching operations and prolongs the service life of the lighting load. At the same time, remote control of lighting loads is realized by setting multiple trigger switches.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a functional control principle block diagram of the utility model. Fig. 2 is the schematic circuit diagram of the utility model. Fig. 3 is the program flowchart of the utility model.

The specific embodiment Now, the utility model is further described by embodiments in conjunction with the accompanying drawings. As shown in Figure 1, the intelligent controller consists of a sensor signal processing module, a button signal processing module, and a zero-crossing interrupt processing module, a microprocessor (MCU) U1 whose model is 89C2051, and its corresponding peripheral circuits, and zero-crossing detection. The circuit C2 is composed of the silicon controlled rectifier electronic switch C1.

The pin 7, pin 8 and pin 6 of the microprocessor U1 are respectively used as input terminals to connect to the output terminal of the pyro-infrared switch U6, one end of the light-touch button switch TA and the output terminal of the zero-crossing detection circuit C2, and the light-touch button The other end of the switch TA is grounded. The pin 2 of the microprocessor U1 is connected to the input end of the thyristor electronic switch C1 as the output end, and the input end of the zero-crossing detection circuit C2 and the output end of the thyristor electronic switch C1 are respectively connected to the AC 220V power supply and the lighting load.

The working principle is: on the one hand, when people are active indoors, the pyro-infrared switch U6 transmits the detected human activity signal to pin 7 of the microprocessor U1, which is processed by the induction signal processing module of the microprocessor U1 The zero-crossing interrupt processing module outputs a control signal to turn on the load through the thyristor electronic switch C1 to provide an operating voltage for the lighting load from low to high.

When no one is active in the room, the detection signal of the pyro-infrared switch U6 disappears, and the interrupt processing module outputs a control signal after a delay, and the power supply of the load is turned off in a high-to-low control mode through the thyristor electronic switch C1. Voltage. In this way, the automatic control of on and off can be realized in a way of gradually turning on and off according to the situation of people's indoor activities.

On the other hand, when the lighting load is in the working state, press the light-touch button switch TA. At this time, if the lighting load is already in the constant light state, the microprocessor U1 will turn off the constant light state and transfer it to the sensor switch for automatic control. If it is in a very bright state, the lighting load is controlled to a constant bright state by the microprocessor U1.

When the lighting load is in the off state, press the light-touch button switch TA, and the microprocessor U1 starts in the soft start mode to provide and maintain the power supply voltage for the lighting load before it was turned off the last time (that is, to maintain the last Brightness before a shutdown), while the lighting load is always on. If the light-touch button switch TA is pressed again subsequently, the always-on state is canceled and automatically controlled by the pyro-infrared switch U6. Regardless of whether the lighting load is off or on, as long as the light-touch button switch TA is pressed for more than 1-3 seconds, it will enter the dimming state and perform cycle adjustment from low to high - from high to low. In this way, the constant light and brightness control of the lighting load can be realized.

This brightness adjustment has a memory retention function, that is, the brightness before the last shutdown can be maintained when the lighting load is turned on next time.

In another embodiment of the present invention, two or more push button switches installed in different positions are connected in parallel at the input end of the push button signal detection module of the microprocessor. Realize remote control of lighting loads.

Claims (6)

1. an induction type dimmer switch comprises control circuit, and the input sense switch is characterized in that described input sense switch comprises at least one inductive switch and at least one trigger switch that is connected to described controller input.

2. according to the described induction type dimmer switch of claim 1, it is characterized in that described controller is an intelligent controller, described inductive switch and trigger switch are respectively human induction switch and the push-button switch that is connected in the intelligent controller input.

3. according to the described induction type dimmer switch of claim 2, it is characterized in that described intelligent controller is by the microprocessor that comprises induced signal processing module, button signal processing module and zero passage interruption processing module, and the zero cross detection circuit and the drive circuit formation that are connected to microprocessor input and output, described human induction switch and push-button switch are connected to this induced signal processing module of intelligent controller and the input of button signal processing module.

4. according to claim 2 or 3 described induction type dimmer switchs, it is characterized in that described human induction switch and push-button switch are connected to the pin 7 induced signal processing modules of microprocessor and the input of pin 8 button signal processing modules.

5. according to claim 2 or 3 described induction type dimmer switchs, it is characterized in that described human induction switch is that heat is released infrared switch, described push-button switch is the soft-touch type push-button switch, and described drive circuit is the controllable silicon electronic switch, and described microprocessor model is 89C2051.

6. according to the described induction type dimmer switch of claim 1, it is characterized in that described controller input is connected with two or two the above trigger switches.

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