Multi-camera synchronous control device based on GPS and pulse generator and method

A technology of pulse generator and synchronous control, which is applied in the direction of image communication, color TV parts, TV system parts, etc. It can solve the problems of long time synchronization and the immediacy of system work can not be guaranteed, and achieve reliable High performance and high synchronization accuracy

Inactive Publication Date: 2014-12-10
NO 27 RES INST CHINA ELECTRONICS TECH GRP
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Problems solved by technology

This method takes a long time to achieve time synchronization among multiple sets of acquisition equipment, generally 3 to 5 seconds. In the measurement of high-speed dynamic targets, the immediacy of system work cannot be guaranteed.
[0007] Based on the above situation, currently in the multi-camera intersection measurement system for dynamic targets, the existing measurement devices or methods have relatively large defects and cannot meet the existing needs

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  • Multi-camera synchronous control device based on GPS and pulse generator and method
  • Multi-camera synchronous control device based on GPS and pulse generator and method

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[0023] Multi-camera synchronization control device based on GPS and pulse generator, including GPS receiver, pulse generator and multiple camera units, multiple high-speed image collectors, multiple image processing computers; the output terminal of the GPS receiver Connect the input end of the pulse generator, the output end of the pulse generator is respectively connected to the input end of a plurality of high-speed image collectors, and the output ends of the plurality of high-speed image collectors are respectively connected with the input of the corresponding image processing computer The output end of the camera unit is connected to the high-speed image collector

[0024] The pulse generator is connected with three signals to the image collector through a cable, which are respectively a second pulse signal for realizing time synchronization, a synchronous acquisition pulse, and a camera exposure control pulse. The pulse generator connects three signals to the image collect...

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Abstract

The invention discloses a multi-camera synchronous control device base on a GPS and a pulse generator as well as a multi-camera synchronous control method. The multi-camera synchronous control device comprises a GPS receiver, the pulse generator, a plurality of camera units, a plurality of high-speed image collectors and a plurality of image collecting and processing computers. As an external triggering source model of high-speed cameras is adopted by the multi-camera synchronous control device, based on the GPS time service, the device guarantees the time synchronization according to the synchronous pulse per second emitted by a satellite at the initiative moment of each second to realize the synchronous control on multiple cameras. The multi-camera synchronous control device is high in synchronization precision and reliability, simple and practical.

Description

Technical field [0001] The present invention relates to image acquisition control technology, in particular to a multi-camera synchronization control device and method based on GPS and pulse generator. Background technique [0002] At present, in the multi-camera rendezvous measurement system for dynamic targets, the commonly used multi-camera synchronization control methods can be divided into the following types: [0003] 1) Based on the free run mode of the high-speed camera itself, that is, the internal trigger mode. Trigger by the trigger source in the camera. However, the synchronization accuracy of this mode is poor, at the millisecond level. In image measurement systems with high accuracy requirements, the frame rate of the camera is generally 500-1000 frames per second, and the measurement error caused by the synchronization error cannot be accepted. [0004] 2) Realize synchronization between cameras based on multi-channel image data acquisition card. Most of the mul...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
Inventor 王华涛朱喜明王树才梁金辉杨丽丽
Owner NO 27 RES INST CHINA ELECTRONICS TECH GRP
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