海南世电UWB测距在高铁站的应用-海南世电科技

I: Requirements background and pain points

High-speed railway station is an intensive place with a very large flow of people. In order to prevent passengers from illegally invading the end of the platform to cross the railroad line, the Railway Bureau requires the installation of an anti-passage system, which can detect and capture the illegal invasion in time and stop the violation to avoid major losses.

In order to pursue the high accuracy and stability of the system, the "millimeter wave radar + camera + voice alarm" program is usually used. It can accurately recognize whether there is someone intruding within a set short distance, and if there is someone intruding, it will link up with the alarm to broadcast voice and the camera to capture the picture.

Although the system can accurately identify whether there are people who mistakenly enter the dangerous area, but can not distinguish the attributes of the people crossing the system, the legitimate railroad station maintenance staff to carry out normal safety checks will also trigger the alarm, which greatly affects the passenger experience, and at the same time a waste of human resources station management.

II: Programmatic overview

Installation of "millimeter wave radar + camera + voice alarm" anti-intruder monitoring and alarm systemUWBRanging base station tags andWE-TG230and card tagsWE-T241-CRanging Base Station TagsWE-TG230Provide two relays, i.e., active relay 1 and passive relay 2, and connect the two relays to the anti-trespassing central control system respectively. According to the status of the relays, it can be determined whether there are staff members (usually wearing white list tags) in the alarm area, so as to decide whether to release the anti-passage alarm. The application deployment diagram is shown below:

Hainan ShidianUWB mutual measurement system to the international advanced UWB positioning technology as the core. Adopt unilateral ranging algorithm to realize the base station and tag adaptive accurate ranging, the average accuracy of up to 10cm, the base station to develop two-way relay, through the relay disconnect/closure to realize the base station preset range is the presence of the tag detection. The principle of the program is described in the following figure:

Ranging base station tag WE-TG230 RS485 interface and RS485 to network DTU docking, the WE-TG230 RS485 communication reporting converted to RJ45 network reporting, through the base station tags we provide the reporting interaction protocol, monitoring center platform software can quickly read up the tag ID; base station ID; ranging distance; tag power and other information, while the platform can add or delete the legally authorized white list tag ID. The platform can add or delete legally authorized whitelist tags through the platform, the platform application software interaction interface is shown in the figure below: