With the development of economic construction and infrastructure, the construction operations of cranes, tower cranes, pump trucks, excavators and other large over-height vehicles are becoming more and more frequent, and the risk of transmission lines being damaged by external forces is increasing. Traditional prevention and control methods, such as manual inspection and video monitoring, have certain limitations due to the influence of weather, low degree and limited monitoring range.
How to accurately warn of the intrusion of super-high objects under the line to prevent external breakthrough accidents? The application of millimeter wave radar technology provides a new solution to this problem. Its advantages are as follows:
1, high precision and high resolution: Due to the short wavelength of millimeter wave (about 4mm) and small antenna size, narrow beam and high gain can be realized, thus providing high precision tracking and guidance.
2, large bandwidth: millimeter-wave radar has a large bandwidth, which can provide rich information and improve the system's anti-jamming ability.
3、High Doppler frequency: good detection and identification ability for slow targets and vibrating targets.
4, good anti-stealth performance: for some stealth targets, millimeter wave radar can form a strong electromagnetic scattering, reducing its stealth effect.
In practical application, millimeter wave radar can be divided into ultra-short-range, short-range, medium-range and long-range radar according to the detection distance, which corresponds to different installation locations and functions. According to these advantageous features, in order to improve the recognition rate of the hidden target of external breakage under the complex environment of the line, our company adopts the fusion of deep learning and millimeter-wave radar, combines the high-precision ranging information of millimeter-wave radar with the image information collected by the monitoring camera, and develops the Transmission line millimeter wave radar anti-external breakage monitoring deviceDX-WPS100-JG3.
The device realizes the time synchronization and spatial fusion of millimeter wave radar and surveillance camera through sensor calibration. Based on the AI algorithm, it analyzes and processes the image collected by the monitoring device, automatically identifies the hidden danger target in the image, and at the same time maps the target point detected by the millimeter wave radar into the image, and through the target fusion algorithm, it identifies and categorizes the hidden danger target and accurately determines the relative position of the external breakage danger to the conductor. The hidden danger information is sent to the monitoring center in real time and graded alarms are carried out according to the preset values.
technical specification
1. Detection distance: 800 meters
2. Detection period: 2 minutes (adjustable)
3、Pixel: 8 million
4. Resolution: 3840*2160
5. Communication mode: 4G/APN
The application of millimeter-wave radar anti-external breakage online monitoring device on transmission lines effectively solves the problem of the weather, light, distance and other factors on the The application of millimeter wave radar effectively solves the influence of weather, light, distance and other factors on the traditional monitoring device, and realizes the identification of hidden targets of external breakage of transmission lines under complex background.
