Driving device and method for synchronous signal collection for multiple CCD cameras

A synchronous signal, acquisition and drive technology, used in image communication, color TV parts, TV system parts and other directions, can solve the problem of high-resolution CCD sensors and super wide-angle lenses are expensive, large in size and weight, and unfavorable installation. and transportation, to achieve the effect of reducing hardware investment, reducing volume and weight, and reducing costs

Inactive Publication Date: 2015-01-28
JIANGXI NERIN ELECTRIC AUTOMATION
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Problems solved by technology

A single CCD DR detector needs to use an ultra-large wide-angle lens, and the acquisition optical path is long, resulting in a large product volume and weight, which is not conducive to engineering operations such as installation and transportation. At the same time, the high-resolution CCD sensor and ultra-large wide-angle lens are relatively expensive

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  • Driving device and method for synchronous signal collection for multiple CCD cameras
  • Driving device and method for synchronous signal collection for multiple CCD cameras
  • Driving device and method for synchronous signal collection for multiple CCD cameras

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Embodiment

[0051] 1. The hardware composition of the drive device

[0052] figure 1 Shown is a block diagram of the hardware composition of the drive device of the present invention. The principle is that the CPLD (Complex Programmable Logic Device) device generates the relevant drivers of multiple CCD sensors according to the relevant logical relationship, and at the same time controls the AD to convert the video analog image data collected by each CCD sensor into digital image data. Then use CPLD to control GIGE to upload the video digital image data collected by each CCD camera to the host computer for display one by one.

[0053] 2. CPLD driver design method

[0054] This device takes the synchronous signal acquisition of 12 CCD cameras as an example, and describes the design method of the CPLD driver in detail (increasing or reducing the CCD camera at the acquisition front end 3 does not affect the overall structure of the CPLD driver, only the count value of the v_xfer_done p...

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Abstract

The invention discloses a driving device and method for synchronous signal collection for multiple CCD cameras. The driving device is composed of an AD collection module, a CPLD driving hardware module and a GIGE transmission module. The AD collection module is connected with a collection front end in parallel and connected with a PC upper computer through the GIGE transmission module. The AD collection module and the GIGE transmission module are both connected with the CPLD driving hardware module through signals. The CPLD driving hardware module is connected with the collection front end through signals. According to the driving device and method, synchronous collection, AD sampling and GIGE transmission of multiple CCD sensors can be realized through one driving chip at the same time, hardware input of collection through a video surveillance and control system can be effectively reduced, and materials are provided for panorama montage; optical paths of image collection can be reduced, so that the size and weight of a product are reduced, and the cost of the product is lowered.

Description

technical field [0001] The invention relates to a signal data acquisition system in information technology, in particular to a driving device and method for synchronous signal acquisition of multiple CCD (full name Charge Coupled Device, Charge Coupled Device) cameras. Background technique [0002] In some important places (such as bank warehouses, anode mud workshops, security agencies, etc.), the requirements for video security monitoring systems are very strict, and it is necessary to realize 360° synchronous video acquisition in key areas without dead ends, so it is necessary to set up multiple CCDs in the same area camera. In order to achieve synchronous acquisition by multiple CCD cameras, the current common implementation method is to configure an independent acquisition drive system for each camera, and aggregate the images acquired by each camera to a video optical transceiver (the camera is an analog front end) or a switch ( The camera is a digital front-end) and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/353H04N5/232H04N7/18
Inventor 余亮邹丽芳张卫国
Owner JIANGXI NERIN ELECTRIC AUTOMATION
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