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The composition of the system
This system is a set of wireless remote control system, through the police hand-held control terminal (hereinafter referred to as the hand-held terminal), at the same time in the fixed detention place to install the data acquisition base station, positioning prevention activator, with the help of the WIFI network to the electronic equipment worn by the supervised object The foot buckle or wrist strap implements remote control and tracking. Once the supervised object exceeds the control range, the handheld terminal will send out an alarm signal. So as to realize the functions of searching and alarming the supervised objects. The system is composed of a data acquisition base station reader, a positioning management activator, a handheld controller, an electronic foot buckle or a wireless warning wristband for criminals.
Figure 1 Structure diagram of prison medical monitoring system
The handheld controller and the data acquisition base station carry out data transmission through WIFI network technology, and can obtain the status information of the electronic foot buckle or wristband in real time. Once the distance exceeds the preset position, the handheld controller will give an alarm and support the alarm state release function.
At the same time, a method of remote RFID monitoring, positioning and tracking is adopted for temporary labor areas and internal areas of driving vehicles to realize the mode of requesting police force from science and technology, as shown in the figure below
An omnidirectional receiver and a directional receiver are placed on the police car to monitor the overlapped area in real time by combining them, and at the same time transmit the monitoring information back to the prison information center through the GPRS network in real time.
GPRS network communication diagram
3. Working principle
The system is a portable location tracking system for detainees, mainly used for offenders to work, go out for medical treatment and escort. The system uses short- and medium-distance wireless communication technology, which can track the trajectory of offenders without contacting the offenders and non-line-of-sight conditions. , Understand the current state of the offender, etc. The working principle is: before the offender goes out, wear the electronic foot buckle or the offender wireless alert wristband, and the police officer uses the handheld controller to automatically search for these foot buckles or wristbands and then register. At this time, the foot buckle or wristband and the positioning activator , The connection established between the handheld controllers, the handheld controller can realize the control of the foot buckle or wristband, and the police can set the control range of the foot buckle or wristband on the handheld controller. Once the prisoner leaves the control area, he will hold the terminal to give an alarm and send a text message to the designated mobile phone receiver.
4. Main equipment
(1) Prisoner wireless alert wristband
Prisoner Wireless Vigilance Wristband
The criminal offender wireless alert wristband is mainly designed to track the offender’s outing activities. It is used for the location of offenders and the management of out-of-office activities, which can prevent offenders from escaping. Wristbands can be worn according to the actual situation. The wristbands are mainly designed for outing criminals. X represents different colors. We can distinguish different criminals by color. For example: red represents violent criminals, blue represents well-reformed criminals, etc., convenient Improved the management of police officers.
(2) Handheld terminal
Handheld Terminal
The handheld controller and the wristband or foot buckle appear in pairs. The relationship between them is 1:n. A handheld controller can communicate with multiple wristbands or foot buckles at the same time. The handheld controller can be added or removed at any time. The link between the belt or foot buckle and it can send control information to one or more foot buckles or wristbands at the same time.
5. System features
(1) Flexible and convenient to use
The establishment and withdrawal of the wireless connection between the handheld controller and the wrist strap or foot buckle are very convenient, and can be completed by the relevant instructions on the handheld controller.
(2) Highly humane
The operation of the handheld controller is completed through the visual interface, which is convenient and quick to use, even if the person who does not understand the computer operates the device, there is no obstacle
6. Main functions
(1) Realize automatic search, add and cancel of wristbands or foot buckles;
(2) Manually preset the alarm range pertinently;
(3) Sound alarm can be sent in time;
(4) Display the number of escaped personnel.
(5) The prisoner’s wristband is anti-dismantling, waterproof, and convenient to wear;
(6) The handheld device is linked to the designated mobile phone SMS alarm mode;
(7) Alarm mode: cross-border alarm, escape alarm, wristband removal alarm, call reminder, etc.;
(8) Simultaneous real-time monitoring of multiple prisoners;
(9) Real-time grasp of the location information of detainees and alarm information through electronic maps;
(10) The product is designed with automatic restoration to factory settings and automatic warning functions.
The highlight of this application case: the seamless combination of RFID and GPS, through 3G network information transmission, not only enhances the safety of out-of-office management, but also greatly improves the timeliness and stability of system operation. Through electronic tamper-resistant wristbands The comprehensive management greatly reduces the work pressure of escorting police officers.
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