Surveillance target positioning method

Abstract

A surveillance target positioning method requires arrangement of a laser ranger, a thermal imaging camera, an optical imaging camera and a control unit on a head in an area under surveillance; the optical imaging camera, the thermal imaging camera and the laser ranger are mounted on a suspension arm of the head, and optical axes of lenses of the three components are kept coaxial in order to perform positioning and surveilling. The surveillance target positioning method comprises the steps of setting coordinates of the head; setting a reference azimuth; driving, by a surveillance system, the thermal imaging camera and the optical imaging camera to scan a target area, performing laser ranging in case of emergency, and reading the azimuth and pitching angle from the control unit on the head;uploading to a GIS (geographic information system) for displaying. The surveillance target positioning method according to the technical scheme has the advantages that after discovering emergencies, surveillance personnel can position coordinates quickly and accurately, an emergency site is subjected to correspondence with the displayed position in the GIS, and conveniences and quick response areprovided for case analysis and disposal options.

Description

【Technical Field】 [0001] The invention relates to a method for monitoring and positioning a specific target in a large area of ​​a wilderness, in particular to a monitoring and positioning method for dangerous situations and forest fires. 【Background technique】 [0002] Our country has a vast territory. In the vast unmanned areas or vast forest areas, in order to prevent forest fires and other dangerous situations, it takes a lot of manpower, material resources and financial resources. Early wilderness or forest disaster prevention and fire prevention are mainly based on manpower. The main reason is that the rangers and rangers use manual inspections to complete the inspections. The results are low, time-consuming, and not very effective. With the advancement of science and technology, a technical monitoring system is used for prevention and monitoring. At present, the technical monitoring system can only estimate the azimuth and high and low angles of the monitored target by th...

AI Technical Summary

Problems solved by technology

[0002] Our country has a vast territory. In the vast uninhabited areas or vast forest areas, in order to prevent forest fires and other dangerous situations, it takes a lot of manpower, material resources and financial resources. Early wilderness or forest disaster prevention and fire prevention were mainly based on manpower. Lord, forest rangers and rangers are done by manual inspection, which is not effective and takes a long time, and it does not play a very effective role in prevention and control

With the advancement of science and technology, the technical monitoring system is used for prevention and monitoring. At present, the technical monitoring system can only estimate the azimuth and elevation angle of the monitoring target by the number of rotations of the pan-tilt motor, but cannot measure the distance, so it is difficult to confirm the target coordinates

In this way, there will be many virtual targets on the GIS geographic information system, which cannot be corresponded on the map. When an alarm situation is discovered, only those who are very familiar with the map and the scene can spend a lot of time to match it.

In addition, the motor has the phenomenon of out of step and gear backlash, and the estimated azimuth and elevation angle often have large errors, coupled with other cumulative errors in operation, etc., which cannot meet the requirements of use.

[0003] Moreover, the position angle of the existing pan / tilt is driven by the rotation of the motor, and the angle calculated by the number of gear teeth. When the motor is used for a long time, there will be a situation of out-of-step and gear backlash. The azimuth angle obtained in this way and pitch angle will have error

It caused a great delay to the follow-up handling of the disaster and the arrangement of rescue work, and ultimately the timeliness could not be guaranteed, delaying emergency rescue