Transmission conductor on-line monitoring method and system based on target identification and reconstruction
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A technology of target recognition and power transmission wires, applied in the field of emergency handling, can solve the problems of short laser signal propagation distance, long algorithm time-consuming, easy to cause false alarms, etc., to meet real-time requirements, improve recognition speed, and improve accuracy Effect
Active Publication Date: 2021-08-27
JINING POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +2
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Problems solved by technology
[0006](1) Install laser radar detectors on transmission lines or towers to build a safety monitoring system against external force damage, but limited by the short distance of laser signal propagation and large amount of data The monitoring range is relatively small;
[0007](2) Set up a remote video security online monitoring device for transmission lines. This method has strong real-time performance and a wide monitoring range, but manual judgment is still required and the degree of automation is not high;
[0008](3) Based on the video surveillance system, background modeling and li
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Embodiment 1
[0037] like figure 1 As shown, the online monitoring method of transmission lines based on target recognition and reconstruction includes the following steps:
[0038] Obtain the image information of the space above the tower, identify the dangerous area of the wire based on the image information, and generate early warning and forecast information;
[0039] Determine the sampling range and sampling period of laser point cloud data based on early warning and forecast information;
[0040] Use the laser point cloud data to obtain the dangerous distance. When the dangerous distance meets the safety conditions, the work ends; when the dangerous distance does not meet the safety conditions, a safety warning is issued according to the risk factor.
[0041] The specific process is as follows:
[0042] 1. Obtain the image information above the tower, collect the image data and point cloud data in the channel, and calibrate the camera device; monitor the wire and channel status in...
Embodiment 2
[0095] This implementation provides a system for realizing the monitoring method of Embodiment 1, including a camera, a laser radar and a processor;
[0096] The camera device is arranged in the space above the tower, and the image data of the wire is obtained and sent to the processor; the laser point cloud data of the space above the tower is obtained by the UAV equipped with lidar and sent to the processor, and the processor uses the image data and laser point cloud data to calculate the risk. Factor, according to the risk factor to issue safety warning information.
[0097] The system can use real-time monitoring images to improve the recognition speed to meet the real-time requirements of transmission line monitoring, use laser radar scanning data to improve the accuracy of dangerous distance calculation, and integrate the minimum vertical distance, minimum clearance distance, minimum horizontal distance and danger distance, Parameters such as the size of the dangerous ta...
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Abstract
The invention relates to a transmission conductor online monitoring method and system based on target identification and reconstruction, and the method comprises the following steps: obtaining image information of a space above a tower, recognizing a dangerous region of a conductor based on the image information, and generating early warning information; determining a sampling range and a sampling period of the laser point cloud data based on the early warning information; acquiring a dangerous distance by using the laser point cloud data; when the dangerous distance meets the safety condition, ending the work; and when the danger distance does not meet the safety condition, sending out safety early warning according to the danger coefficient. The real-time performance of a monitoring image is utilized to improve the dangerous object identification speed, and the real-time performance requirement of power transmission line monitoring is met; point cloud data scanned by a laser radar is utilized, the accuracy degree of dangerous distance calculation is improved, and online monitoring and safety early warning of a transmission line are achieved by integrating parameters such as the minimum vertical distance, the minimum clearance distance, the minimum horizontal distance, the dangerous distance, the size of a dangerous target, the height of the dangerous target and the safety guarantee level of the transmission line.
Description
technical field [0001] The invention relates to the field of emergency handling, in particular to an on-line monitoring method and system for power transmission conductors based on target identification and reconstruction. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the expansion of the coverage of the power grid, the number of transmission lines has increased year by year. Due to their wide distribution and long transmission distances, they are vulnerable to accidents caused by various harsh external environments during operation. In recent years, with the development of urban construction, the tripping accidents of transmission lines caused by external force damage caused by construction sites or human activities have increased significantly. According to statistics, more than 80% of the causes of external damage failures are c...
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