Multi-path illumination controlling apparatus using two alternating-current power lines for realizing power supplying and controlling
A power line power supply and lighting control technology, which is applied in lighting devices, lamp circuit layout, energy-saving control technology, etc., can solve the problems of high manufacturing cost, long installation hours, and poor flexibility, so as to save power lines and wires, easy maintenance, and realize The effect of intelligent control
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Embodiment approach 1
[0056] Signal generation:
[0057] The multi-channel lighting control device transmits information by changing the time interval of alternating current zero crossing through the switch controller. The switch controller changes the zero-crossing time interval of the alternating current according to the control data to be sent, and forms an information flow to send out. Realize the transmission of data.
[0058] By artificially changing the zero-crossing time interval, there is a large difference between the changed time interval value and the original interval value to represent the existence of information. The switch controller in the present invention can control the on-off of the alternating current, when sending information, cut off the alternating current, produce a voltage and be the state of 0 volts, artificially produce a zero-crossing point t2, and the duration is fifteen times of the usual zero-crossing time interval one-third. In the present invention, the moment...
Embodiment approach 2
[0064] Signal generation:
[0065] The zero-crossing point of the alternating current is detected by the zero-crossing circuit, and the duration of the zero-crossing point is usually very short. The present lighting control device characterizes the presence of information by varying the duration of the zero crossing. The switch controller changes the zero-crossing duration of the alternating current according to the control data to be sent, and forms an information flow to send out. Realize the transmission of data.
[0066] Normally, the alternating current generates a zero-crossing point every half cycle, and the zero-crossing time detected by the zero-crossing circuit lasts very short, which is set to t1. When the information is to be transmitted, the zero-crossing duration is extended, and the duration is one-third of the half cycle One, set it to t0.
[0067] In the agreed communication protocol in the lighting control device, t0 is defined as data 0 and t1 is defined ...
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