Infrared speed dome capable of automatically regulating brightness of infrared lamp and realization method

Abstract

The invention discloses an infrared speed dome capable of automatically regulating the brightness of an infrared lamp and a realization method. The infrared speed dome capable of automatically regulating the brightness of the infrared lamp comprises a shooting module, a light-emitting diode (LED) lamp bank, an LED driving module and an image processor, wherein the shooting module, the image processor, the LED driving module and the LED lamp bank are sequentially connected; and the image processor is used for reading an amplification factor of the shooting module and outputting a correspondingpulse width modulation (PWM) signal according to the amplification factor of the shooting module to make the LED driving module output corresponding driving current. In the infrared speed dome and the realization method, the image processor reads the amplification factor of the shooting module, outputs the corresponding PWM signal according to the amplification factor of the shooting module and regulates the current of the LED driving module, thereby regulating the brightness of LED lamps; moreover, the brightness of the LED lamps is increased along with the increasing of the amplification factor of a lens of the shooting module to reduce the over-exposure of the shooting module, thereby enabling the infrared speed dome to shoot clear pictures.

Description

technical field [0001] The invention relates to the technical field of security monitoring, in particular to an infrared high-speed ball for automatically adjusting the brightness of an infrared lamp and a method for realizing the same. Background technique [0002] With the development of science and technology, infrared monitoring technology has been widely used in various fields. At present, infrared high-speed balls generally need day and night monitoring. When infrared high-speed balls are monitored at night, it is generally necessary to turn on the infrared light, and emit infrared light through the infrared light to assist the camera exposure. to capture an image. [0003] At present, infrared high-speed balls generally use cannonball-type LEDs (light emitting diodes, light emitting diodes) as infrared lights, please refer to figure 1 , the light emitted by the luminous core of the traditional cannonball LED directly passes through the front resin lens to control a p...

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Problems solved by technology

[0004] In this way, when the infrared high-speed ball is monitoring a nearby object, if the brightness of the infrared light is too high, it is easy to cause the camera to overexposure, making the image taken by the camera whitish and unable to obtain a clear image, and the brightness of the infrared light cannot be adjusted by the current to fulfill

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