The application of Bluetooth AOA technology in prisons is mainly reflected in prisoner monitoring, crowd behavior alarm, security system warning, big data analysis, dynamic roll call, video linkage and other aspects.
Prisoner monitoring: By wearing a tag with a Bluetooth device, real-time monitoring and historical trajectory query can be achieved to help managers understand the activities of prisoners.
Crowd behavior alarm: Set up specific areas in the prison. When the number of people in a certain area exceeds a certain limit, the system will issue an alarm to deal with possible crowd violations.
Security system warning: If prisoners try to escape or police officers encounter emergencies such as attacks, the system will immediately alarm to improve response efficiency.
Big data analysis: Through Bluetooth positioning data, a heat distribution map can be generated to analyze the movement trajectory of prisoners and reasonably distribute police force.
Dynamic roll call: Managers can query the real-time number of people and information about those who have not arrived through the application for easy management.
Video linkage: Bluetooth technology can be linked with the video surveillance system, so that managers can view the video in real time and respond to various situations in a timely manner.
In addition, Bluetooth AOA positioning technology also has the advantage of high-precision positioning, and can provide more accurate positioning information in some specific environments, which is of great significance for improving the efficiency and security of prison management.
AoA technology products have advantages over UWB in terms of accuracy, power consumption, coverage, compatibility, etc.:
1. The most accurate at the same deployment density.
• The accuracy is comparable and can meet the needs of the on-site environment.
2. The lowest power consumption among all positioning technologies.
• The beacon can be used for more than 1 year (powered by button batteries), and the UWB beacon with the same battery capacity usually has a usage time of 1 week to 1 month.
3. The only choice for high-precision single base station to achieve two-dimensional positioning
• A single AoA base station can perform precise positioning, while a single UWB base station cannot complete positioning.
4. The Bluetooth ecosystem is mature and complete, and it is the only choice to support sub-meter positioning of ordinary mobile phones.
• BLE AoA technology is compatible with existing mobile phones, most of which do not support UWB.
• Supports docking with beacon terminals above BT4.0, and the ecosystem is more mature and complete.
Typical composition architecture of AoA positioning system
Ø Positioning business system:
By obtaining the data solved by the positioning engine, the location information of personnel, assets, etc. is displayed in real time, and the location big data statistical analysis application is applied.
Ø Server & positioning engine:
The high-precision adaptive positioning engine algorithm solves the beacon signal to obtain the real-time and accurate location information of personnel.
Ø PoE switch and network equipment:
Installed on site, used for power supply and data communication of the positioning base station.
Ø Positioning base station:
Installed on site, based on the core IoT BLE AoA (angle of arrival) positioning technology, it receives the positioning beacon signal.
Ø Positioning beacon:
Worn on personnel or fixed on assets, it transmits positioning information.
