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1. System composition
The positioning system consists of a software system and a hardware system. The software system is used to complete information collection, identification, analysis and transmission. The hardware system consists of a ground monitoring computer, transmission adapter, radio frequency base station, radio frequency locator, radio frequency wristband ID card and antenna And other components, used to complete information collection and identification, so as to realize the functions of personnel identification and positioning. The software system and the hardware system jointly support the operation of the entire system and deduce various functional applications. The functions of each hardware device are as follows:
1. Radio frequency identification card. With a unique ID, a person’s information is stored inside to identify the target object. There are two types of radio frequency identification cards for police officers and prisoners. The wristbands used by police officers and armed police have a button for actively sending data, which has the function of actively sending signals to the card reader to receive data, which is used for duty personnel to report their location regularly. In order to prevent the separation of the human card; the prisoner uses the wristband to install and prevent the insertion and removal of the electronic wristband, and the locator takes the initiative to take the wristband data and does not actively upload it.
2. Radio frequency locator. According to the positioning requirements of the prison, a radio frequency locator is installed at each locating point. The radio frequency locator can actively send a signal to activate the wristband within the positioning range to upload data, and it can also receive actively uploaded police radio frequency identification card data. Then the data is transmitted to the nearby radio base station through the RFID wireless network.
3. Radio frequency base station. According to the prison’s positioning requirements, the prison is divided into several positioning areas, and a radio frequency base station is installed respectively to receive the data uploaded by the wristband, and transmit the data to the personnel positioning system, and then the software system will identify and analyze the data. location information.
2. Functional design
In order to meet the requirements of prison positioning, first divide the prison into several areas, and then build a radio frequency base station in each area; then in the prison perimeter walls, buildings, entrance and exit forbidden places, prison activities and other public places Install radio frequency locators in areas, prison labor sites, prison escort vehicles, patrol points, etc.; finally, all prison staff and prisoners will be issued with a unique radio frequency identification card or electronic wristband radio frequency card, and the staff’s radio frequency card is active The mode can actively upload data, while the prisoner’s passive mode needs to enter the range of the radio frequency card reader and upload data information after being activated. The data read by the radio frequency card reader is transmitted to the base station through the wristband RFID wireless network to identify and analyze the specific location of the relevant personnel.
3. Functional application design of prison personnel positioning system
Prison personnel positioning system based on RFID technology can be well applied to prison systems through wireless transmission, taking advantage of its large network capacity, low power consumption, and short time delay. The prison personnel positioning system plays an important auxiliary role in the position management of prison personnel, and can be linked with the alarm and video systems of the prison security monitoring software, which can effectively assist the prison supervisors in monitoring the daily security situation of the prison.
(1) Map and equipment management
1. Map management
The electronic map function in the prison personnel positioning system can visually display the information of all radio frequency cards, card readers and base stations in the prison, and you can directly click to view the relevant information with the mouse. The map management function can support the operation of electronic map functions and configure some maps, such as the setting of map loading information, which can selectively set the information loaded on the map; map editing can zoom in and out on the map to make the location more precise; Map attribute management can modify the read-only, control, and display of the map to facilitate the management of the map.
2. Equipment management
Supervisors can manage and configure the hardware equipment in the prison personnel positioning, such as base station, card reader, radio frequency card transmission frequency, scanning frequency; wireless transmission network configuration; increase base station or card reader equipment; personnel information corresponding to the radio frequency card .
(2) Personnel monitoring and positioning
1. Access management
Positioning readers can be installed in the entry and exit areas of the prison gate, the second door, the prison gate, the prison gate, the hospital, the interview room, the prison, the factory, the farm, and the coal yard. When the monitored person passes, the system immediately records the information and time of the passing prisoner. The system can designate a designated object for access management during a specified period of time. When a violation is found, the system will immediately alert and display the information of the offender and finally locate the location of the system. For example, install a reader in the gate passage of the prison. When a vehicle enters and exits, if there is a prisoner hiding in the vehicle, there is no longer a need for on-duty police officers to get in the vehicle for inspection. As long as the vehicle enters the passage, the reader will scan the prisoner’s radio frequency card data , An alarm will be issued to inform the personnel on duty and supervisory personnel to strictly verify.
2. All-day itinerary monitoring
The card reader records all the information and time of the radio frequency card, and then analyzes the personnel’s all-day itinerary information through the personnel positioning system, which can realize the function of monitoring the personnel’s all-day itinerary and support the viewing of the personnel’s trajectory.
3. Regional population monitoring
It can assist the supervisor to count the number of people in the relevant area, set the area of the relevant personnel in advance, and the card reader will record the read radio frequency card data and have a personnel positioning system for statistics. Regional population monitoring can effectively monitor the dense population and rapid gathering of people in the area, and it can count the number of people in the area regularly to check whether there are prisoners slipping away.
4. Action area monitoring
Monitor the location of all personnel, monitor the personnel’s action area according to the personnel’s relevant authority, and determine whether the personnel has cross-border behavior, and if there is a cross-border behavior, the system’s cross-border alarm will be triggered.
5. Patrol management function
Supervise and manage prisoners’ patrols, track patrol routes and supervise whether the patrol routes comply with the prescribed routes. Set the prisoner’s patrol route and patrol time. Once the card reader fails to read the patrol personnel radio frequency card data at the specified time or the patrol point card reader reads the patrol personnel radio frequency card data during non-patrol time And so on, the system will send out an alarm and remind the supervisor to deal with it.
6. Prison guard attendance management
Supervise the duty situation of prison guards. The card reader regularly scans the prison guard ID card data, and the prison guard ID card regularly reports its own location information. The personnel positioning system analyzes the scanned data and the received data to determine whether the early warning duty situation is normal or not. There are phenomena such as separation of personnel cards, personnel leaving their posts, and private shifts.
7. Perimeter wall management
A ZigBee card reader is installed at intervals on the perimeter wall of the prison, and the scanning range is set to within 2 meters from the wall, that is, near the physical isolation network inside the prison. When the inmate’s radio frequency card data is scanned within this scanning range, a perimeter wall warning message will be issued to remind supervisors to check. If there is a jailbreak behavior, the emergency response plan for the jailbreak incident can be activated immediately for processing.
8. Out-of-home labor management
Prisoners carry out labor reforms in open areas such as farmland and mines, and can quickly build a wireless monitoring and positioning system to monitor the entire process of outgoing personnel to prevent out-of-work personnel from escaping incidents. The prison monitoring center can also keep track of the situation of the outgoing personnel through the monitoring terminal, and can take immediate measures when abnormal situations occur.
9. Management during escort
In addition to positioning and managing the vehicle when going out for medical treatment, interrogation, transfer, etc., the prison personnel can also monitor the detainees in the vehicle and the prison guards throughout the entire process. The monitoring center can always know the situation of the vehicles and the personnel in the vehicle during the escort. .
Each vehicle is equipped with a vehicle GPS locator to locate the location of the vehicle, and a card reader is installed in the vehicle. The escort guards and detainees wear identity cards, and the system prefabricates the information of authorized personnel (time period information, personnel information) and card readers. The information received by the device will be transmitted to the personnel positioning management system through the wireless network. When the people in the vehicle leave the vehicle on the way, the system sends out an alarm message, and the prison monitoring center can obtain the information in time. When the vehicle drives out of the prison gate, the system is automatically set to the monitoring state, and the system automatically turns to the idle state when it arrives safely.
(3) Abnormal situation alarm function
1. Cross-border alarm, register the wristband information received by the card reader, and find unregistered wristband data, the system determines that the person carrying the wristband has cross-border behavior, and the system will issue a cross-border alarm to remind supervisors to check. If the prisoner’s wristband data appears in the police office area or the prisoner’s data near the perimeter wall, an out-of-bounds alarm will be issued.
2. Intensive personnel alarm. The system limits the number of people in some public areas or prisons. When the wristband data read by the card reader exceeds the specified number of people, the system will issue an early warning message to remind the supervisor that the area is crowded;
3. People quickly gather to alarm. The system counts the wristband data read by the card readers in each area at each time. When a certain period of time, several statistical results show that the number of people is increasing rapidly, and the frequency of increase exceeds a certain setting. After the data is collected, the system will issue an early warning message that personnel quickly gather in a short period of time to remind supervisors to check the area;
4. Attendance alarms for duty personnel. The personnel on duty use ID cards. In order to prevent the separation of the card, the police ID card requires regular reporting and manual upload of data information by pressing the send button. When the card reader in the duty room scans the identity card information of the on-duty staff and receives the information actively uploaded by the identity card, and the identity card information matches the information of the on-duty table at the current location, it is considered that the current on-duty staff is on duty normally, otherwise it will An alarm message is issued to remind supervisors to check on duty.
5. Patrol alarm. If the patrol person does not appear in the patrol point (card reader) to receive the data as specified The belt will issue a patrol alarm to remind the supervisor to proceed
6. Count abnormal alarms. After the data information read by the card reader in the specified time and area is analyzed and counted, the system will send out an alarm message to remind the supervisor to check if there are few people, many people, or inconsistent personnel information.
Alarms during the escort, and the escort vehicle is on the way. When the people in the vehicle leave the vehicle on the way, after the card reader fails to scan the personnel information, the system sends out an alarm message to remind the supervisor to take urgent action.
7. Alarm for damage to the wristband, to prevent the card from being discarded, disassembled, not working, etc., the system will send out the wristband alarm information to remind the supervisor to check whether it is personal damage or wristband failure.
Supervisors can manage prison detainee files, alarm rules, cordon settings, personnel access authorization, historical information query and other information through management functions.
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