Measurement of latency during real-time wireless video transmission for remote supervision of autonomous agricultural machines

Along with the rapid expansion of automation, communication, the Internet of things technology, and video image processing technology, the wireless video transmission technology based on the embedded system is becoming increasingly more mature. In this paper, what has been designed and managed to be perfectly applied is a transmission system of high reliability and convenience which based on the technique of pan-tilt control and integrated the technology of wireless LAN, embedded technology, video transmission technology. The paper briefly introduces the research background of the system, current research status at home and abroad, the development trend and the significance of this design project. What is more is that the article goes through the hardware and software design of the pan-tilt control circuit and software of real-time video transmission in a detailed way. The biggest is that this project has made the real-time video transmission in the local area network came true and you can check the real-time dynamic video images by browsing the web through you mobile phone.

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Design of Intelligent Surveillance System Based on Wireless Video Transmission and PID Multiplexed Control Strategy

The Open Electrical & Electronic Engineering Journal ◽

10.2174/1874129001509010467 ◽

2015 ◽

Vol 9 (1) ◽

pp. 467-473

Author(s):

Chuanfeng Li ◽

Yunxing Shu ◽

Mingming Zhao

Keyword(s):

Real Time ◽

Control Strategy ◽

Surveillance System ◽

Video Transmission ◽

Host Computer ◽

Movement Direction ◽

Intelligent Vehicle ◽

Joint Control ◽

Wireless Video ◽

Wireless Video Transmission

A kind of wireless video transmission intelligence surveillance system is developed to perform work normally done by human being in hazardous environment, narrow space, as well as chemical and toxic places. This system consists of two main parts: a host computer with monitoring software and a mobile intelligent vehicle. The host computer software can provide real-time display of video, temperature, humidity, light intensity and other environmental information collected by the intelligent vehicle, and can control the movement direction, movement speed of the intelligent vehicle as well as the camera platform angle with control buttons. The vehicle can collect images and sensor data, and transmit them to the host computer via wireless fidelity (WIFI). The speed of intelligent vehicle is regulated by joint control of position type proportion integration differentiation (PID) and bang-bang control strategy. The video is captured by universal serial bus (USB) interface camera, and transmitted to the host computer by WIFI for real-time display. The testing results show that the system can not only display clear video images, but also accurately display the dynamic data of sensors. At the same time, the host computer can reliably control the multi-directional movement, grabbing obstacles and changing camera platform angle of the intelligent vehicle.

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