- introduction -
The train distance detection system is designed to measure the distance between two train vehicles during train merging and grouping, and transmit the distance information to the vehicle information control device. The system includes a train distance detection and control host (TDD) and a distance sensor (SEN).
The main functions of the system are as follows:
• Distance detection function
• Distance display function
• Distance correction function
- Train distance detection and control host(TDD) -
TDD connects the laser sensor through two shielded twisted pairs, supplying power to the sensor and receiving a 4-20mA distance signal from the sensor. The distance is obtained after the A/D conversion according to the internal conversion. The actual distance value is obtained by subtracting the correction value set on the front panel from the distance value. It is sent to the four LED Nixie tube on the interface for display, and the display is XX. XX meters. At the same time, it is transmitted to the train monitoring system through the HDLC Current loop interface and displayed on the man-machine interface of the train monitoring system.
- Distance Sensor(SEN) -
SEN determines the target distance by measuring the time required for the laser to travel to and from the target, and the measured distance is transmitted to the distance detection host through the Current loop. This product optimizes its structure based on the installation environment and can adapt to high intensity vibration environments.