A LED driver with strobe, constant power mode

Abstract

The invention discloses an LED driver with stroboscopic and constant power mode, comprising: a power supply circuit coupled to an external commercial power supply to convert the commercial power supply to output; a power conversion circuit coupled to the power supply circuit to Receive the power output from the power circuit, and convert the power to output power; the PWM modulation circuit is coupled to the power conversion circuit to input PWM signals to the power conversion circuit; the strobe control circuit is coupled to the external camera controller , and is also coupled between the power conversion circuit and the external LED lamp to control the on-off between the LED lamp and the power conversion circuit. The LED driver with stroboscopic and constant power mode of the present invention can effectively convert the mains power supply to the LED lamp through the setting of the power supply circuit, power conversion circuit and PWM modulation circuit, and the stroboscopic control circuit The setting can realize that the LED light only works when the camera is working, which effectively reduces the power consumption of the LED light.

Description

technical field [0001] The invention relates to an LED driver, more specifically to an LED driver with stroboscopic and constant power modes. Background technique [0002] In the management of modern road vehicles, road cameras occupy a very important position. Through the shooting function of road cameras, 24-hour uninterrupted monitoring of vehicle conditions and road conditions on the road can be effectively realized, so that suspect vehicles need to be arrested It also plays a very important role in the regulation of traffic violations. [0003] However, the existing cameras all need to be controlled by the controller during the shooting process, and a supplementary light is set beside it to perform a supplementary light effect on the shooting of the camera. Generally, high-power LED lights with high brightness are used, so after the fill light is turned on, it consumes a lot of energy. However, when the existing fill light is working, it will always be turned on as lon...

AI Technical Summary

Problems solved by technology

[0003] However, the existing cameras all need to be controlled by a controller during the shooting process, and a supplementary light is set beside it to perform a supplementary light effect on the shooting of the camera. Generally, high-power LED lights with high brightness are used, so after the fill light is turned on, it consumes a lot of energy. However, when the existing fill light is working, it will always be turned on as long as it is not damaged, so as to realize real-time monitoring of the camera The effect of supplementary light, so because the LED light needs to be turned on all the time, when the camera is not shooting, the LED light is also turned on, resulting in the problem of wasting power when the camera is not shooting, and the LED light is turned on

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