Image transmission and control system and method based on ZYNQ-7000 and FreeRTOS

Abstract

The invention relates to the field of image transmission and control systems, and in particular relates to an image transmission and control system and an image transmission and control method based on ZYNQ-7000 and FreeRTOS, solving the problems that an existing kilomega network image transmission system based on an FPGA adopts a UDP protocol, image data is easy to loss and no retransmission function is provided. The system comprises a front-end circuit and a rear-end circuit, wherein the front-end circuit comprises a CCD image collection chip, an amplification circuit and an analog / digital (A / D) conversion unit; the rear-end circuit comprises a ZYNQ-7000 chip, a DDR storage chip, an EEPROM chip, a QSPI FLASH chip and a PHY chip; the EEPROM chip, the QSPI FLASH chip, the DDR storage chipand the PHY chip are separately connected with the ZYNQ-7000 chip; and the ZYNQ-7000 chip comprises a data format conversion unit, a data channel unit, a command channel unit, a command format conversion unit, a network communication unit, a command analysis unit and a FreeRTOS real-time operating system running on the ZYNQ-7000 chip, and the FreeRTOS real-time operating system runs a TCP / IP protocol stack. The invention also provides an image transmission and control method based on the abovementioned system.

Description

technical field [0001] The invention relates to the field of image transmission and control systems, in particular to an image transmission and control system and method based on ZYNQ-7000 and FreeRTOS. Background technique [0002] In scientific research, objects are often observed and quantitatively analyzed under low-light conditions. At this time, instruments and equipment with high sensitivity, low noise, high linearity, and large dynamic range are required to collect and process image data, and image data acquisition Whether it can be timely and accurately transmitted to the PC host computer will directly affect the practicability, reliability and image data index of the image acquisition equipment. In addition, some observation conditions may even cause harm to observers. At this time, image acquisition equipment is required to transmit image signals over long distances. [0003] In terms of image transmission, the patent documents with application numbers 2015108904...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing FPGA-based image transmission system adopts UDP protocol, image data is easy to lose and has no retransmission function, etc., and provides an image transmission and control system and method based on ZYNQ-7000 and FreeRTOS. And the method realizes imaging under low-light conditions and high dynamic range imaging, and transmits the image to the PC host computer through the network communication protocol TCP protocol

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