Method for driving infrared lamp of infrared lamp driving circuit
A technology of drive circuit and drive control circuit, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc. It can solve the problems of no lighting, "too many lamps, and influence on luminous power", achieve less heat generation, prolong service life, and improve luminous power The effect of power
Active Publication Date: 2014-12-03
TIANJIN TIANDY DIGITAL TECH
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Problems solved by technology
[0004] In order to prolong the life of the infrared lamp, we can only increase the current limiting resistance to reduce the working current of the infrared lamp, but this will affect the luminous power, resulting in the disadvantage of "too many lamps but not bright".
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[0014] The present invention will be described in detail below with reference to the drawings and examples.
[0015] figure 1 It is a structural schematic diagram of the infrared lamp drive circuit of the present invention; figure 2 It is a structural schematic diagram of the infrared lamp driving circuit board of the present invention.
[0016] Such as figure 1 As shown, the infrared lamp drive circuit of the present invention is connected with the infrared array lamp group and controls the working state of the infrared array lamp group. The above-mentioned infrared lamp drive circuit includes: a power-on delay circuit, a switch type constant current drive control circuit, The current sensing amplifier circuit, power inductor and decoupling circuit; the power-on delay circuit is connected between the power supply line of the infrared lamp drive circuit and the switch-type constant current drive control circuit, and the current introduced into the infrared lamp drive circui...
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Provided are an infrared lamp driving circuit, method and circuit board. The infrared lamp driving circuit comprises a switch-type constant current driving control circuit, a current sensing amplification circuit, a power inductor and a decoupling circuit and can stably output power sources with current to be 800mA. When the input voltage fluctuates between 9V and 18V, the change amount of current of an infrared lamp is only 0-5mA, and therefore illumination of the infrared lamp of an infrared night vision camera keeps unchanged when the voltage changes in a wide range, luminous power of the infrared lamp is improved, and service life of the infrared lamp is greatly prolonged and can be prolonged to be 2-4 years at most. The infrared lamp driving circuit board comprises the infrared lamp driving circuit, a power circuit, an automatic aperture control circuit, an optical filter switching circuit, a single chip microcomputer control circuit and an external interface circuit. The infrared lamp driving circuit board has the advantages of being high in efficiency and little in heating and ensures reliability of a product complete machine.
Description
technical field [0001] The invention relates to the technical field of security monitoring, in particular to an infrared lamp driving circuit with high stability and high intelligence, a driving method and an infrared lamp driving circuit board. Background technique [0002] With the continuous development of the security industry and the continuous updating of technology, users' demand for 24-hour monitoring is becoming more and more intense. Therefore, front-end video acquisition equipment equipped with infrared light sources plays a more prominent role in the field of video surveillance. For security products used for night monitoring or dark environment monitoring, high-definition picture quality, high integration, low illumination, intelligence and low cost have always been a difficult problem to be solved urgently, and solving these problems depends on infrared The quality and lifespan of the light source depend on breakthroughs in technologies such as infrared lamp dr...
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IPC IPC(8): H05B37/02
CPCY02B20/42Y02B20/40
Inventor 戴林孙婷婷丁伟利
Owner TIANJIN TIANDY DIGITAL TECH