A Brief Analysis of the Application of RFID Positioning System in the Management of Prisons
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1. Background analysis
With the prosperity and development of economic life, the tasks of public security and judicial organs in maintaining social order and combating criminal crimes are becoming more and more serious. Technological innovations to improve the management mode of prisons to meet the needs of real struggles are becoming an urgent need of the judicial department. At present, the information systems of the public security or judicial departments are only limited to information processing, and information collection is still purely relying on hand input, and it is impossible to truly associate the information system with the detainees. In a special environment such as a supervision site Use a safe and reliable automatic identification system to distinguish, identify, track and locate detainees, and link the information of everyone in the information system with the dynamics of everyone in reality, so that the information system of the supervision site can be fully utilized. effect.
This system can identify and track the location of prison police officers and prisoners in real time, whether it is inside or outside the prison. By requiring each person to wear a small wireless tag, the tag information is stored in the system’s positioning device, so that the prisoners can be identified, managed, tracked, and located separately. The accuracy of the positioning can be reflected by the detention room number. Through the RFID prisoner real-time tracking and positioning system, it can greatly reduce the difficulty of prison guards’ work, reduce misleading work, improve the modern management level of the prison, improve the security and self-protection ability of the prison, and realize the real sense of prison management. The informatization and intelligent mechanism of “requiring efficiency and security” will implement the policy of “strengthening the police through science and technology” in a true sense, and profoundly reform the traditional methods of prison management.
2. System function
The criminal/suspect identification wireless wristband is based on the latest active RFID automatic identification technology. The active wristband and the reader work in the 433M frequency band, and exchange data through the electric field. The system design mode is the wristband unidirectional transmission, reading The receiver is responsible for receiving, making signal transmission the easiest and most efficient way to identify, classify, manage, track and locate criminals, eliminate human errors and unnecessary confusion, greatly reduce the workload of guards, and improve work efficiency. Legal enforcement agencies in developed countries in Europe and the United States have also begun to use this technology soon.
1. Basic recognition
Basic identification is the basic function of the prisoner’s wireless wristband. Cooperating with information management software, it is extremely important for places with a large number of management objects and greater mobility. Different from traditional prisoner registration cards or registration cards, professional prisoner wireless wristbands are worn by prisoners personally, and photos and other related information can be attached to the built-in chip of the wireless wristband. Therefore, it is very convenient to check and verify the information of prisoners at any place and in any processing process in the prison, and can correspond to more detailed information in the information management software to ensure that each prisoner is accurately identified and processed.
2. Fine recognition
Fine recognition is a deepening and supplement to basic recognition. The wireless wristbands for criminals and criminal suspects provide a variety of color options, and different types of criminals can be classified by different colors of wireless wristbands.
Distinguish according to the nature of the crime, for example, use different colors to distinguish death row prisoners, severely sentenced prisoners, and other prisoners.
The criminal suspects are classified according to their status during the entire litigation process, such as the distinction between criminal detention, arrest, and sentenced prisoners.
According to their own characteristics, such as high-risk prisoners and other prisoners, or prisoners with infectious diseases and ordinary prisoners.
According to the prisoner’s activity area, such as which places can be involved and which places cannot be involved.
According to the prisoner’s abnormal behavior status, such as fighting, gathering, climbing and other actions.
Three, application scenarios
Wristband wireless positioning systems need to be deployed in appropriate locations and key locations, and are generally used in these occasions.
As large as dormitories, open playgrounds, labor places, lawyers or family reception rooms, interrogation or removal from prisons, places for trial, as small as doorways, windows, corners, pillars, railings, etc., wireless wristbands can be used to accurately identify prisoners. Identify and locate to prevent errors or replacement. The number of placement identification and positioning devices is mainly determined by factors such as site environment, design technology, antenna gain, and design procedures.
Equipped with a handheld device, the guards can retrieve the detailed information of the prisoner based on the wireless wristband information without flipping through the files, and conveniently automatically register the time of entering and leaving the prison for a certain prisoner and transfer it to the computer.
Four, functional characteristics
The system is mainly composed of a wristband for automatic identification of personnel, a locator, a base station reader, and system management software.
1. Two-level positioning recognition, large-scale fuzzy position recognition, small-scale key area recognition. Special 1/4 wavelength antenna design, the communication distance is stable and reliable, the automatic identification range of each wireless wristband can reach 0-100 meters under different environmental conditions, and the identification range can be adjusted at any time through the locator according to different needs.
2. Information is uploaded one-way and timed and monitored actively. All prisoners’ wristband tags will actively send tag information to the base station locator every 1 second (time adjustable) to ensure that each prisoner is in the corresponding monitoring area, and provide the greatest degree of modern and efficient means for prisoner supervision. The wireless wristband adopts a unique patented technology with completely independent intellectual property rights, and its service life can reach more than 5 years. When a tag’s power is too low, the system can actively alert and prompt to replace it, without regular inspections one by one.
3. Real-time positioning of key areas. By installing locators in the various rooms, passages and other positioning points of the prison, the activities of prisoners can be automatically tracked in real time, and real-time control of the whereabouts of prisoners can be easily achieved. Whether in the room or in the outdoor activity area, the positioning of each wireless wristband can be realized through the locator, and the positioning accuracy can reach 1-2 meters in the room or open area.
4. Wristband anti-vandalism alarm function. Self-locking wristband buckle design, prisoners cannot remove it by themselves, and the wristband built-in conductive material forms a loop for self-checking. Once the wristband is damaged, the system immediately sends an alarm signal.
5. Active alarm for abnormal information. Real-time monitoring of irregular behaviors, the wristband tag has built-in sensors, which can detect conflicts, fights or other irregular behaviors between prisoners in real time, and send specific wireless signals to notify supervisors.
6. High system integration. The wireless wristband positioning system module can be seamlessly connected to the existing prison access control system, and can realize the linkage operation with the video surveillance system.
7. Consumer storage function. The wristband integrates a 13.56 low-frequency chip card to realize the all-in-one card management of various consumption information of prison personnel.
8. Multi-label anti-collision design. Each wireless wristband has a globally unique code, which is associated with the information of the corresponding prisoner. A single locator can identify hundreds of wireless wristbands in the positioning range at the same time. There will be no conflicts between the wristbands and omissions. Will not repeat recognition and cause confusion.
9. The wristband is designed according to ergonomics and made of special engineering materials, which is lightning-proof, waterproof, and impact-proof. It is suitable for long-term direct contact with the skin, and at the same time meets the needs of communication.
Five, wristband parameters
Working frequency band: 433MHz
Modulation method: GFSK
Recognition distance: 2-100m adjustable
Recognition speed:> 120km/h
Service life: 1-5 years
RF power: <1mw
Working temperature: -35℃ — 85℃
Six, function overview
1. Real-time monitoring of the signals of detainees within the signal coverage area to determine the location of detainees.
2. Real-time positioning and alarm tracking of detainees entering certain sensitive and key areas.
3. Quickly identify the identity of persons close to the cordon and trigger the perimeter alarm.
4. Active, effective and convenient warning of emergencies in the prison.
5. Real-time and accurate system intelligent roll call greatly reduces the intensity of prison guards’ work and reduces manual errors.
6. Convenient and flexible hand-held system for roll call, inquire the information of detainees at any time, to ensure that the unique identification does not make mistakes.
7. Convenient and scientific consumption methods, flexible mobile consumption methods, and accurate report statistics make consumption worry-free.
8. Small-scale real-time monitoring and real-time data return of handheld devices improve management convenience and real-time feedback.
9. Real-time and effective positioning of temporary staff members, and full monitoring and tracking of their basic paths.
10. Integrate security resources to achieve full linkage between the system and access control, video surveillance, and perimeter power grids.
11. Special anti-duress codes to increase prison guards’ active anti-duress ability.
12. Real-time monitoring and protection of weapons and important equipment.
13. Automatically count the number of people in the designated area and the information of the surrounding police officers on duty
Seven, system advantages
1. The traditional passive defense system is upgraded to active system defense.
2. Accurate and real-time unique identification.
3. Reliable identification, comprehensive monitoring, real-time alarm, without manual intervention.
4. Easily grasp who appears when and in which key area.
5. Real-time monitoring, tracking and alarming of abnormal conditions.
6. Timely and effective system response, accurate and fast information feedback.
7. Effective combination of multiple frequency bands, active defense + flexible consumption.
8. Combination of air defense, technical defense and physical defense.
9. Dedicated to customers and realize the refined management of prison business safety.
10. The security system is fully linked in real time.
11. In most occasions, it directly replaces barcodes.
12. Guarantee the personal safety of management personnel and detainees to the maximum extent.
13. In the true sense, we need police force from science and technology to realize the information management of prisons.
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