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Infrared digital image acquisition and transmission system and method based on optical fiber communication

A technology of digital image and optical fiber communication, applied in TV systems adapted to optical transmission, cable transmission adaptation, closed-circuit TV systems, etc. Reduced size and weight, clear organization, easy programming

Inactive Publication Date: 2015-04-22
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

But it does not support hot plugging, and it is not conducive to making portable devices, and its application popularity is far less than that of USB interface.

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  • Infrared digital image acquisition and transmission system and method based on optical fiber communication
  • Infrared digital image acquisition and transmission system and method based on optical fiber communication

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Embodiment Construction

[0034] The specific embodiments of the present invention will be further described below according to the accompanying drawings.

[0035] figure 1 It is a system block diagram of an infrared digital image acquisition and transmission system and method based on optical fiber communication.

[0036] The hardware platform adopted in the present invention is: a host computer, a USB2.0 control chip, two FPGAs, a SDRAM, an optical fiber receiving module, an optical fiber sending module and peripheral interfaces.

[0037] The host has a USB2.0 interface, and is installed with a driver program for an infrared digital image acquisition and transmission system based on optical fiber communication.

[0038] The USB2.0 control chip is selected from Cypress's CY7C68013. This chip conforms to the USB2.0 standard, and its maximum operating frequency is 48MHz. It has more than two common input and output pins that can simulate the IIC protocol. It can be configured as a slave device FIFO an...

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Abstract

The invention discloses an infrared digital image acquisition and transmission system and method based on optical fiber communication. The system and method are used for performing remote acquisition, transmission and real-time display of digital images generated by an infrared imaging detection device. The method includes the steps that a sending end detects infrared digital images received from an LVDS interface and packs the infrared digital images; after a receiving end unpacks the infrared digital images, image data are cut according to an acquisition window, then, the data enter an FPGA, a high-capacity FIFO cache area composed of an FIFO cache and an outside SDRAM is built in the FPGA, and the data enter an upper computer through a USB interface and are displayed in real time. The system and method have the advantages that due to the fact that the image acquisition window is adopted and the high-capacity FIFO cache area composed of the FIFO cache and the outside SDRAM is built in the FPGA, transmission of useless image data is reduced, data transmission efficiency is improved, meanwhile, only one SDRAM is used as a cache, and a circuit structure is simplified.

Description

Technical field: [0001] The invention relates to the transmission and display of infrared digital images, in particular to a system and method for collecting and transmitting infrared digital images based on optical fiber communication. It is mainly used for remote acquisition, transmission and real-time display of digital images generated by infrared imaging detection equipment. Background technique: [0002] Infrared imaging detectors convert infrared radiation into electrical signals, which are then analog-to-digital converted and preprocessed into infrared digital images. Usually infrared imaging detectors need to have real-time detection capabilities in omnidirectional airspace, so infrared detectors need to rotate 360 ​​degrees, and the data acquisition and receiving devices are fixed bodies, so it is necessary to collect the data generated on the rotating body in real time with high speed and high reliability. transferred to the fixed body. However, the implementati...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04N7/22
Inventor 代具亭汤心溢刘鹏张昊杨转
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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