Multi-device joint control circuit based on modulated AC waveform

Abstract

The invention discloses a multi-device joint control circuit based on a modulated AC waveform. The multi-device joint control circuit comprises one or more control devices. The control device comprises a single-chip microcomputer module, an AC / DC power supply module, an AC reference detection module, a relay control module, an AC waveform modulation module, a cooperative control output modulationmodule and a cooperative control input detection module. The control device comprises four wiring terminals, wherein two of the four wiring terminals are a zero line input N terminal and a live line input L terminal which are used for being connected with a mains supply AC power supply, one terminal is an IN-OUT terminal connected with the cooperative control input detection module and the cooperative control output modulation module, and one terminal is an Lx terminal used for connecting the output of the AC waveform modulation module and an external controlled electric device. Through the circuit structure including the interface terminals, joint control and joint regulation of one or more controlled electric devices by the multiple control devices are realized only by common power lineconnection, so that the pre-sales and after-sales service cost of dealers and engineering providers is greatly reduced.

Description

technical field [0001] The invention relates to a control circuit of a controlled electrical device, in particular to a multi-device joint control circuit based on a modulated alternating current waveform. Background technique [0002] At present, the simplest known application of multiple control devices to jointly control one or more controlled electrical devices is that two or three double-control wall panel switches are connected in a dual-control manner to the same light or a group of lights. On and off control; With the development of science and technology and the upgrading of people's application needs, the control technology of multiple control devices for the connected controlled electrical devices has gradually been upgraded from simple on and off control to a variety of tasks. Joint debugging, joint control and even intelligent control technology of state control, for example, users can use multiple connected panel switches to jointly perform complex control of m...

AI Technical Summary

Problems solved by technology

[0002] At present, the simplest known application of multiple control devices to jointly control one or more controlled electrical devices is that two or three double-control wall panel switches are connected in a dual-control manner to the same light or a group of lights. On and off control; With the development of science and technology and the upgrading of people's application needs, the control technology of multiple control devices for the connected controlled electrical devices has gradually been upgraded from simple on and off control to a variety of tasks. Joint debugging, joint control and even intelligent control technology of state control, for example, users can use multiple connected panel switches to jointly perform complex control of multi-level brightness adjustment or multi-level color temperature adjustment on connected lamps; currently, multiple control devices Jointly control the complex working status of the connected controlled electrical devices, and generally adopt the technology of weak current cable connection or wireless signal connection. These technologies basically require the installer or user to perform relevant pairing and connection of each device before normal use. , the complexity and construction difficulty of the paired connection increases sharply with the increase in the number of devices. Regardless of the weak current cable connection or wireless signal connection, there are problems such as signal attenuation and signal interference. The stability and reliability of the existing control devices on the market are facing challenges. It is not a small challenge. In practice, these problems have become the direct reason for channel providers to refuse cooperation and customers to return products

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