A court visitor positioning project in Shanghai

Project requirement decomposition

The main building of a people's court in Shanghai consists of 9 floors above ground and 1 floor underground. The indoor positioning system needs to locate the parties moving in the public area in real time. The system coverage includes the security check building, outdoor area, 1-4 floors of the court building and other areas.

The target of positioning is visitors (parties and attorneys) and the number of people is about 200.

Requirement.:

  • Real-time positioning/tracking records for personnel, with real-time location inquiries available.
  • Positioning history records can be played back and data stored for 1 year
  • The system is capable of conducting statistics on the number of people in the area.
  • Electronic fence can be set in the area.

Program Description

The system architecture consists of three parts: positioning anchor, tag, and positioning engine server, as shown in the figure below.

Workflow: tag emits UWB signal → anchor receives UWB signal → master station gathers UWB data and forwards it → computing server performs data decoding.

Anchor deployment.

  • 1、In the open area, the anchor is deployed in a grid shape with a radius of 30m, such as a larger conference room or office, etc., as long as it is installed around near the wall to form a rectangle to cover the whole office area.
  • 2、In the corridor area, anchors are deployed along the corridor with a radius of 15~30m.
  • 3、In the stairwell and small room area, one anchor can be installed in the center.
  • 4、The anchor should be far away from air conditioning vents, fluorescent lights and other obvious obscurants, so that people can see the anchor from any angle in the coverage area.

Site pictures.