Research on Self-adaptive Strategy of Video Communication in Power Transmission and Transformation Project

Abstract

According to the existing problems in the construction site of transmission and transformation project, an on-site monitoring and control system of power transmission and transformation project was designed. The on-site video is transmitted back to the project headquarters through the wireless network of the service provider. However, due to the unstable bandwidth of the wireless network and the weak signal strength of the scene, the real-time transmission of the video may cause a long transmission delay and a video jam. In order to ensure the flow degree and integrity of video transmission, a video optimal transmission method based on one-way queuing delay was proposed according to the data stream characteristics of bidirectional transmission of monitoring and control system. At the receiving end, we detect the network congestion according to unidirectional queuing delay and estimate the bandwidth according to the state of the buffer and improve the TFRC algorithm to make it suitable for this system and ensure more stable data transmission by adaptively controlling the bit rate. The experiment shows that the optimize transmission method can efficiently evaluate the state of the network, accurately control the bit rate change, and provide technical support for the on-site monitoring of the power transmission and transformation project.