Spiral cable, video transmission line and video transmission system

Abstract

The invention provides a spiral cable, a video transmission line and a video transmission system. The video transmission system comprises the video transmission line, wherein the video transmission line comprises a connecting terminal, a plug, a cable sheath, a folding box and the spiral cable; the spiral cable comprises a cable body, a spiral structure is arranged in the middle of the cable body, the cable body comprises a transmission cable and a sheath structure, the transmission cable comprises a central conductor, an insulating layer wrapping the central conductor, a shielding layer wrapping the insulating layer and a middle coating layer wrapping the shielding layer, the sheath structure wraps the middle coating layer, the central conductor comprises N strands of filamentous conductors, N is an integer greater than or equal to 7, the sheath structure comprises an outer sheath, and thickness of the outer sheath is greater than or equal to 1.4 mm; the connecting terminal is connected to one end of the spiral cable, the connecting terminal is fixed in the plug, and the plug and the connecting terminal are fixed through the folding box. The video transmission system is advantaged in that the video transmission line has characteristics of high mechanical performance and long bending life, and can realize high-speed and stable video signal transmission.

Description

technical field [0001] The invention belongs to the technical field of signal transmission, and in particular relates to a spiral cable, a video transmission line and a video transmission system. Background technique [0002] A trailer is a commonly used large truck, which includes a tractor head and a trailer towed by the tractor head. Due to the large size of the trailer and the large angle formed between the tractor head and the trailer when turning, the driver passes through the rear view. When viewing the surrounding environment through the mirror, there is a large range of visual blind angles, which affects driving safety. [0003] In related technologies, video cameras are usually installed around the trailer to collect images, and then the collected images are transmitted to the tractor head for display, so that the driver can understand the surrounding conditions of the vehicle. The image signal collected by the video camera needs to be transmitted by a video trans...

AI Technical Summary

Problems solved by technology

The image signal collected by the video camera needs to be transmitted by a video transmission line. The video transmission line is connected between the tractor head and the trailer. During the driving process of the trailer, it will experience various road conditions such as bumps and turns. Correspondingly, the video transmission line will often be subject to vibration, Bending, etc. However, analog standard definition or ordinary video transmission lines are often used as video transmission lines for trailers in the market. Such video transmission lines have low bending life, poor mechanical properties, and unstable video information, and are not suitable for the exterior of trailers. The use in harsh environments will easily affect the quality and stability of video transmission, and it is difficult to ensure that the driver can accurately and reliably obtain the surrounding conditions of the vehicle, which will affect driving safety

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