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External synchronous trigger signal generating method and equipment

A technology of trigger signal and generating equipment, applied in the direction of pulse generation, single output arrangement, electrical components, etc., can solve the problems of unable to adjust the delay of external synchronous trigger signal, poor synchronization effect, etc.

Active Publication Date: 2014-04-02
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for generating an external synchronization trigger signal to solve the problem in the prior art that the delay of the external synchronization trigger signal cannot be adjusted, resulting in poor synchronization effect

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  • External synchronous trigger signal generating method and equipment
  • External synchronous trigger signal generating method and equipment
  • External synchronous trigger signal generating method and equipment

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Experimental program
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Embodiment 1

[0025] Such as figure 1 As shown in , it is a schematic structural diagram of the device for generating the external synchronization trigger signal in Embodiment 1 of the present invention Figure 1 , the generation device of the external synchronization trigger signal includes a trigger signal generation module 11 and a trigger signal adjustment module 12, wherein:

[0026] The trigger signal generation module 11 is used to generate a periodic square wave signal, and uses the periodic square wave signal as an external synchronous trigger signal generated; specifically, the trigger signal generation module 11 is used to use the received AC The power signal is converted into a periodic square wave signal consistent with the timing of the AC power signal, and the periodic square wave signal is used as the generated external synchronization trigger signal; further, the AC power signal can be 24V, 48V or 220V and other AC power signals, which are not limited in the embodiment of ...

Embodiment 2

[0037] Embodiment 2 of the present invention is a detailed description of the device for generating the external synchronization trigger signal described in Embodiment 1 of the present invention. In Embodiment 2 of the present invention, each module of the device for generating the external synchronization trigger signal mainly adopts a hardware circuit However, it should be noted that the device for generating the external synchronous trigger signal in the embodiment of the present invention and the modules contained therein can also be realized by software or a combination of software and hardware. The embodiment of the present invention There is no limitation on this.

[0038] Such as figure 2 As shown, it is a schematic structural diagram of the device for generating the external synchronization trigger signal in Embodiment 2 of the present invention. The device for generating the external synchronization trigger signal includes a trigger signal generation module 11 and a...

Embodiment 3

[0066] Such as Figure 8 As shown, it is a schematic flowchart of a method for generating an external synchronization trigger signal using the device for generating an external synchronization trigger signal described in Embodiment 1 in Embodiment 3 of the present invention. The method for generating an external synchronization trigger signal includes the following steps:

[0067] Step 101: Use the trigger signal generation module to generate a periodic square wave signal, and use the periodic square wave signal as the generated external synchronization trigger signal.

[0068] Specifically, a trigger signal generating module is used to convert the received AC power signal into a periodic square wave signal consistent with the timing of the AC power signal, and the periodic square wave signal is used as the generated external synchronization trigger signal.

[0069] Step 102: Use the trigger signal adjustment module to adjust the start time of the edge of the periodic square w...

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Abstract

The invention discloses an external synchronous trigger signal generating method and equipment. The external synchronous trigger signal generating equipment comprises a trigger signal generating module used for generating a periodic square signal and using the periodic square signal as a generated external synchronous trigger signal, and a trigger signal regulating module used for regulating the starting time of the edge of the periodic square signal generated by the trigger signal generating module, using the regulated periodic square signal as the external synchronous trigger signal and outputting the regulated periodic square signal. By adopting the technical scheme of the invention, the time delay of the extracted initial external synchronous trigger signal is regulated according to the characteristics of the external synchronous trigger signal required by an externally connected circuit, and the problem that because the time delay of the external synchronous trigger signal cannot be regulated, the generated external synchronous trigger signal and the trigger signal required by the externally connected circuit are not consistent, and the problem that the synchronous effect is not good in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of signal control, in particular to a method and a device for generating an external synchronization trigger signal. Background technique [0002] At present, in the field of electronic security, when video cameras and other monitoring equipment are used to shoot video and other images, due to the influence of the mains power, there are often light sources such as lights and displays that periodically change brightly with the mains power in the photographed area. Phenomenon. At the same time, since the interval between each frame of the video captured by the camera and other monitoring equipment is generated by the internal clock, and the cycle of the mains power will also change due to different loads, the interval between each frame of the video captured by the camera and other monitoring equipment The interval of the light source is often not synchronized with the cycle of the light source using alternat...

Claims

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Application Information

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IPC IPC(8): H03K4/02H03K5/13
Inventor 殷俊高松全张兴明傅利泉朱江明吴军吴坚
Owner ZHEJIANG DAHUA TECH CO LTD