A large number of passengers come and go between the platform and the subway train, and the passengers are caught between the door and the screen door, which has a great impact on the personal safety of passengers and the efficiency of subway operation.
In order to prevent passengers from being stranded between the platform screen door and the train door, and avoid the train operation and personal safety risks caused by this, a large number of subway operating companies began to detect the gap between the screen door and the train, so as to ensure that there are no obstacles in the gap and ensure the smooth passage of the train.
Lidar can help the safety of urban rail transit.
The gap detection system between the screen door and the train of urban rail transit is operated mainly through the lidar sensor installed on the top of the screen door to conduct the light curtain scanning detection of the gap between the subway train and the screen door.
If a passenger or object is trapped in the gap when the screen door is closed from the train door, the lidar detects it, and the sensor "notifies" the system and triggers an alarm to alert the crew that a passenger is trapped. In this way, the crew can quickly locate and carry out emergency treatment, and take the trapped passengers away, so as to ensure the safety of passengers and vehicles.
The super cost-effective 270° mechanical Lidar C100 series launched by Fului Optics can be applied to the clearance detection of subway shield doors. The scene is shown as (Figure 1).
Traditional detection systems generally use infrared or laser beam, but due to the height of the shooting device, laser beam is limited, there will be a certain blind area, unable to precise positioning; The debugging beam is complicated and time-consuming, susceptible to vibration, wind pressure and displacement, and has a high false positive rate.
The use of lidar for detection can realize accurate positioning without blind areas, and the installation and debugging is relatively simple, high reliability, and can accurately analyze the type and location of obstacles, which is the only choice for intelligent transportation and safe transportation at present.
Special note: (Figure 1) For beautiful display effect, the detection range is only about 120°, which is only for schematic; The actual detection Angle of Furui optical C100 series lidar is 270°, which can realize the detection of screen door without blind area and full coverage.
In the urban smart transportation upgrade, you can choose to carry Furui Optical C100 series Lidar as the sensor scheme. We will help you quickly realize the precise detection of foreign bodies in the shield door with high-quality service, ensure the safety of urban rail transit, and improve the operating efficiency of the intelligent control system.
