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1. System overview
The prison personnel positioning system developed by Shanghai Aolin Information Technology Co., Ltd. adopts the most advanced Zigbee wireless identification technology at present. It is a set of software and hardware combined application system specially designed and developed for the needs of prison personnel situation management and monitoring. An intelligent prison administration management system that safely and reliably distinguishes and recognizes detainees will realize the informatization of prison management in a real sense and enter the path of “requiring police power from science and technology”.
The system enables managers to grasp the detailed information and number of detainees in each controlled area of the prison in real time, effectively preventing the escape of detainees, reducing the chance of criminals forming parties and making troubles, secretly monitoring high-risk detainees, tracking down and following up on the occurrence of violent incidents , To maximize the protection of the personal safety of management personnel and detainees. In addition, the system can also automatically count the number of people in the designated area and the information of police officers on duty in the surrounding area, and dynamically monitor outgoing personnel throughout the entire process, which greatly reduces the work intensity of prison management staff. It can quickly locate the location of police officers on duty. The police can be mobilized efficiently in the event of an incident.
2. System design plan
2.1 Principles of System Application
The system mainly tracks and locates prisoners’ activities or area control, and at the same time grasps the distribution of prison guards. This requires placing a wireless sensor positioning card (tag) representing their identity on the person, and the card (tag) continuously automatically transmits wireless signals. , And arrange locators that can identify these cards (tags) in each area.
Locators can communicate with each other and transmit wireless signals to form a wireless monitoring network. Wherever a person goes, the nearby locator can receive the wireless signal sent by the tag. The system transmits the information sent by the personnel positioning card (tag) to the computer in the control center, and displays the current location of the personnel on the computer screen.
According to the actual situation of the prison, the system pre-sets the activity area and activity time of the personnel. Once out of the specified range, the system can immediately determine the abnormality and trigger an alarm. The staff on duty can instantly see the abnormal personnel and locations on the screen and take corresponding measures. measure.
2.2 Monitoring network design
The system uses ZigBee wireless technology to deploy the monitoring network. Set up verification monitoring points at important passage locations and regional entrances and exits to ensure that “marks are left everywhere and border crossing alarms”. The positioning accuracy can be controlled at multiple levels such as buildings, floors, areas, or rooms, that is, according to the actual needs of the prison, define the range of activities of the personnel in a certain building, a certain floor, a certain area or a certain room.
2.3 Positioning card (label) design
a. Long-distance sensing capability, sending a signal to the monitoring point without being aware of the carrier.
b. Waterproof design.
c. High-speed displacement: supports the reading of high-speed moving objects or personnel data.
d. According to different objects of use, the positioning card (label) has been designed differently:
-Prisoner tag: It is worn on the wrist by means of a wrist strap, and the card (tag) adopts an anti-disassembly design.
-Prison guard label: It is easy to wear by using a hanging buckle card method.
—Other tags: use hanging buckle or wrist strap method for temporary outsiders or other staff to wear.
3. Main functions of the system
3.1 Real-time monitoring of personnel
The location of all detainees and police officers is displayed on the electronic map in real time, and the monitoring personnel can dynamically grasp the number of personnel and real-time distribution. Move the mouse to the personnel icon to view the detailed information of the personnel.
3.2 Personnel search and location
Enter the name or number of the personnel to quickly locate the location of the prisoner or police officer you are looking for.
3.3 Illegal assembly alarm
In the designated area, the system can set the maximum allowable number of personnel. Once the number of people exceeds the preset number, an alarm message will be sent out immediately.
3.4 Forbidden zone intrusion alarm
Some areas are restricted areas. Unauthorized entry of location tags will cause an alarm. When entering and exiting certain gates, you can set up which location tags can pass in advance. When the location tags that do not meet the requirements enter and exit the gate, an alarm message will be issued ; Or some areas can only be entered at a certain time, if entering at other times, it will be regarded as illegal intrusion, and an alarm will also be issued.
3.5 Unauthorized departure alarm
It is stipulated that certain prisoners cannot leave a certain area, or cannot leave a designated place within a certain period of time, and an alarm will be issued once they leave.
3.6 Activity track playback
The system records the location and time of all personnel passing through all the time, can track and replay the personnel’s movement route, and master its detailed activity route and time.
3.7 Automatic ward rounds and roll call
The staff can be counted automatically in each prison at a fixed time, showing the number of people who should have arrived, the number of people who have arrived, and the number of people who have not arrived. If the personnel have not arrived, an alarm will be issued in time to remind the prison guards to find and locate the unreached personnel in time to prevent accidents. The prisoner has set the room number in the system. Once the prisoner enters the wrong room or leaves the room during an irregular time, an alarm message will also be sent.
3.8 Out of care alarm
Bind the prisoner location card (tag) and the police location tag, which can be bound one-to-one or many-to-many. When the walking track of the prisoner and the police are inconsistent for more than the allowed time, the system will send an alarm message. Or limit the distance between the prisoner and the police. When the distance between the two is more than the specified distance, the system will send an alarm message.
3.9 Emergency call
Prison guards and prisoners location cards (tags) have alarm buttons. Once an emergency occurs, you can press the alarm button. The monitoring center can receive the alarm information in time, know the location of the alarm, and provide support quickly.
3.10 Remote monitoring and inspection
The system can be operated through the Internet to realize remote management and monitoring, and managers can check the prison situation at any time even if they are not in the prison.
4. System hardware
The system includes location tags (prisoner wristbands, prison guard cards), locators, and location base stations. Location tags and locators are made of highly integrated micro-power single-chip wireless transceivers and single-chip microcomputers. They are very small in size. Single-chip transceivers can also have a unique manufacturer number in the world (burned in the chip) ). The positioning tags and locators of the system use the 2.4G ISM free frequency band that does not need to be applied for, and they all meet the relevant national regulations for 2.4G channel wireless products.
Product and solution consultation:
Shanghai Aolin Information Technology Co., Ltd.
Tel: +86 21 55126077, 55126078
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