The application of laser ranging modules on railway system is extensive and important, mainly reflected in the following aspects:
1. Track measurement and positioning
Distance measurement: The Laser Ranging Module can accurately measure the distance between points on the track, including the length of the track, the length of the curve section, etc., to provide data support for the precise laying and maintenance of the track.
Positioning: During the track inspection and maintenance process, the laser ranging module can be used to determine specific locations on the track, such as the location of the problem point, the location of the replacement parts, etc., to improve the inspection efficiency.
Precise parking assistance: The laser ranging module can be installed at a specific location on the train to monitor the distance between the train and the end of the platform or the scheduled parking position in real time. By accurately measuring the distance, the system can assist the train driver to make precise parking and ensure that the train can stop accurately at the scheduled position when entering the station. This not only helps to improve the convenience of passengers getting on and off the train, but also reduces the safety hazards that may be caused by inaccurate parking positions.
2. Safety monitoring
Obstacle detection: By installing a laser ranging module on a train or track inspection vehicle, it is possible to monitor in real time whether there are obstacles on the track, such as falling rocks, fallen trees, etc., to ensure the safety of train operation.
Train spacing monitoring: In the train tracking system, the laser ranging module can be used to monitor the distance between adjacent trains to prevent safety accidents such as rear-end collisions.
Line crossing protection: Before the train enters the station, a yellow safety line is usually set at the edge of the platform to prohibit passengers from crossing. The laser ranging module can be combined with laser beam shooting technology to form an invisible safety line. When a passenger or object crosses this safety line, the laser beam is blocked, and the system immediately triggers the alarm device, issues an audible and visual alarm, and sends an alarm signal to the station control center to remind relevant personnel to pay attention and take measures. This instant alarm function can effectively prevent the occurrence of line crossing incidents and protect the lives of passengers.
3. Vehicle operation monitoring
Speed monitoring: The laser ranging module combined with other sensors can monitor the running speed of the train in real time to ensure that the train runs within the specified speed range.
Track gauge and superelevation measurement: The laser ranging module can also accurately measure the track gauge and superelevation (i.e. the height difference between the inside and outside of the track) to evaluate whether the geometric state of the track meets the requirements.
Although the laser ranging module is mainly used for distance measurement, it can also monitor the speed of the train in combination with other sensors (such as) and technical means. When the train enters the station too fast and there is a safety hazard, the system can trigger an overspeed warning to remind the driver to slow down and ensure that the train enters the station within a safe speed range.
IV. Track deformation monitoring
Track deformation monitoring: The laser ranging module can regularly monitor the deformation of the track, including horizontal displacement, vertical displacement, etc., to detect the deformation of the track in time and provide a basis for the maintenance and repair of the track.
Tunnel deformation monitoring: Used to monitor tunnel deformation to install an arc bracket, install the sensor on the bracket, at least 5 units, measure the deformation above the tunnel to ensure subway safety.
For the above deformation monitoring, LDL-20, LDK-60, LDJ-100 laser ranging sensors are all good choices.
5. Signal Tower Anti-Settling
Laser distance sensors are installed on each high-speed rail signal tower to measure downwards to the foundation stone, detect the settlement displacement of the signal tower, and transmit the monitoring data back to the signal headquarters for monitoring.
6. Automation and intelligence
With the continuous improvement of the automation and intelligence level of the railway system, the pulse laser ranging module, like Meskernel high frequency PTFS-H laser distance series,as one of the important sensors, plays an increasingly important role in automatic driving, intelligent scheduling, remote monitoring, etc.
7. Multi-system linkage and comprehensive safety assessment
As part of the train entry safety warning system, the laser ranging module can be linked with other safety systems (such as video surveillance, personnel positioning, emergency braking, etc.). Through information sharing and collaborative work between multiple systems, various safety factors in the process of train entry can be comprehensively evaluated, thereby more comprehensively ensuring the safety of passengers and trains.
8. Summary
The application of laser ranging modules on railway tracks not only improves the accuracy and efficiency of measurement, but also enhances the safety and reliability of railway operation. With the continuous advancement of technology and the continuous expansion of application scenarios, the application prospects of laser ranging modules on railway tracks will be broader. Chengdu Meskernel Integrated Technology Co., Ltd. is technology-service oriented and can provide customized services to companies from all walks of life that have rail transit ranging needs. Welcome to consult.
