A lamp control system
A technology for control systems and lamps, applied in lighting devices, light sources, electrical components, etc., can solve problems such as voltage instability, inaccurate adjustment, and inaccurate adjustment results, and achieve error-free detection, simple circuit design, and high detection effect good effect
Active Publication Date: 2017-08-04
珠海灿源电子科技有限公司
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Problems solved by technology
The current output voltage / current adjustment unit is mostly composed of operational amplifiers and some discrete components. Although it can achieve a relatively good adjustment effect, due to the often unstable voltage in the power supply, the operation of the operational amplifier is easily affected. In turn, the adjustment result is not accurate enough; and the design of the circuit itself is complicated, and it is easy to cause inaccurate adjustment and unstable adjustment.
Method used
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[0031] In order to make the technical means, creative features, goals and functions achieved by the present invention clearer and easier to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments:
[0032] see figure 1 and combine Figure 2-3 , the present invention proposes a lamp control system, comprising: an AC input filter unit for filtering the mains signal; a rectification output filter unit for converting the AC signal output by the AC input filter unit into a DC signal; receiving the rectification output The DC signal output by the filter unit, and the power factor correction boost unit (hereinafter referred to as the PFC boost unit) for boosting operation, the power factor correction boost unit is provided with a PFC chip U1 and a power supply transformer PFC T1. Wherein, as the improvement scheme of the present invention:
[0033] One end of the auxiliary winding of the power supply ...
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The invention provides a lamp control system, comprising: an AC input filter unit for filtering the mains signal; a rectification output filter unit for converting the AC signal output by the AC input filter unit into a DC signal; receiving the rectification output filter unit The DC signal output by the unit, and the power factor correction boost unit for boosting action, the power factor correction boost unit is provided with a PFC chip U1 and a power supply transformer PFC T1, and one end of the auxiliary winding of the power supply transformer PFC T1 passes through The rectifier diode D32 and the first string stabilizer module are connected to the power port of the PFC chip; at the same time, an AC fault detection unit composed of a photocoupler U800 and a switch tube Q801 is arranged between the AC input filter unit and the rectifier output filter unit . The lamp control system proposed by the invention mainly improves the AC fault detection unit, so that the circuit is simplified, the power consumption is low, the detection has no error, and the effect is good.
Description
technical field [0001] The invention relates to the technical field of lamp control, in particular to a lamp control system for controlling a single LED street lamp. Background technique [0002] Street lamps refer to lamps that provide lighting functions for roads, and generally refer to lamps within the range of road lighting in traffic lighting. Among them, compared with other street lights, LED street lights have the characteristics of environmental protection, no pollution, less power consumption, high luminous efficiency, and long life, so LED street lights have become the best choice for energy-saving renovation. With the continuous development and progress of science and technology and the electronics industry, the control system for LED street lights has become more and more complex, and its functions have become more and more diversified. But no matter how complicated it is, for LED street lamps, the constant current drive power required by them is a cornerstone t...
Claims
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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50
Inventor 胡特奇王科李长建张彬朱黎丽
Owner 珠海灿源电子科技有限公司