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Program overview
Use modern high-tech technical means to monitor mental patients, protect the safety of medical staff, call for help in emergency situations and control the development of the scene, and give full play to the role of the supervisory system. The intelligent real-time monitoring system solution can realize the positioning, tracking and moving route playback of mental patients and medical staff. Not only can it respond quickly to incidents such as fights and assaults in the first time, but also provide timely information such as the accurate location at the time of the incident, the attacked medical services and the personnel present, and the movement of the personnel on the scene after the attack, which greatly improves Handling efficiency and management level in unexpected situations. Provide more efficient supervision methods for the management of mental hospitals.
The traditional manual input method is a relatively tedious task to collect the information of the mentally ill, and it is also impossible to truly associate the information system with the mentally ill. In a special environment such as a mental hospital, a safe and reliable information collection system is needed to distinguish and identify patients with mental illness. Only when the information of each person in the information system is truly associated with the activity information of each mental patient in reality can the information system of the psychiatric hospital be fully utilized, so as to realize the informatization and intelligence of the management of the psychiatric hospital in the true sense.
More importantly, the advantages of the system’s proactive prompts and alarms are beyond the current video surveillance system and other passive surveillance systems. It fundamentally transforms passive prevention into active management, which is also used in the application of technological digital management. Minimize the physical and mental burden for medical staff in mental hospitals.
1 System principle
1.1 Working principle
The program mainly uses RFID technology, uses RFID wireless communication technology to transmit information to the collection server through low-frequency locators, identification cards and readers and other terminal devices, and realizes various applications at the upper level, thereby realizing the treatment of mental patients in the hospital Functions such as identity recognition, location tracking and trajectory query. The system terminals mainly include low-frequency locators, RFID base stations, RFID identification cards, and acquisition systems.
Low-frequency locator: Active transmitter. When the identification card enters the low-frequency signal range, it can receive 125KHZ low-frequency signals continuously sent by the locator. The signal includes its own number, which can be used to distinguish and identify different locators. It is 2-8m.
RFID wristband type identification card: It is worn by the personnel who need to be monitored in the hospital. It has a unique number. It can actively receive 125KHz low-frequency signals and upload relevant information through 2.4G. It can realize the functions of identity authentication, location tracking and monitoring.
RFID base station: It is mainly used as an information transmission device to achieve full coverage of the signal in the hospital monitoring area, and can receive the information sent by the card and upload the information to the collection server.
Acquisition system: Process the data uploaded by the base station to realize various upper-level applications.
Use RFID smart wristbands for mental patients in hospitals, using non-dismountable wristbands. The working frequency band is 125K and 2.4G. It can monitor the location of personnel in real time, so that the number of personnel can be grasped in real time. When a patient leaves or enters an illegal When in the area, the system will give an alarm to facilitate timely processing. At the same time, the system will record the historical action trajectory of each psychiatric person, which is convenient for query and statistics.
1.2 Introduction to RFID technology
RFID (Radio Frequency Identification Technology) is a non-contact latest automatic identification technology that matured at the end of the 20th century and the beginning of the 21st century. It is currently being promoted and applied in various industries all over the world.
It uses radio frequency signals to automatically identify target objects and obtain relevant data.
RFID is a flexible application technology that is easy to control, simple and practical, and especially suitable for automatic control. Its unique advantages are beyond the reach of other identification technologies.
The identification work does not require manual intervention;
It can support both read-only working mode and read-write working mode without contact or precise aiming;
Can work freely in various harsh environments;
Can carry out a high degree of data integration;
Because this technology is difficult to be counterfeited or invaded, RFID has a very high security protection capability.
A basic RFID system generally includes the following parts:
Tag: consists of coupling components and chips, each tag has a unique electronic code, attached to the object to identify the target object;
Reader (Reader): a device that reads (and sometimes writes) tag information, which can be designed as a handheld or fixed type;
Antenna: Transmit radio frequency signals between the tag and the reader.
An electronic tag generally stores electronic data in an agreed format. In practical applications, the electronic tag is attached to the surface of the object to be identified. The reader can read and identify the electronic data stored in the electronic tag without contact, so as to achieve the purpose of automatic identification. Usually the reader is connected to the computer, and the read label information is transmitted to the computer for further processing. (In addition to the above basic hardware configuration, corresponding application software should also be included).
2 System function
2.1 System overview
The system puts electronic tags on the mentally ill to manage the location and information of the mentally ill. When the mentally ill moves in an unauthorized area in the hospital ward, it tracks its location and triggers an alarm bell to ensure the safety of the mentally ill. The location information is mainly sensed by the identification card to fix the locator at the channel (such as door, corridor entrance), and the data is transmitted back to the base station, and then transmitted to the internal LAN network in a wireless or wired manner to the server, and finally realize real-time management information.
2.1.1 Software system structure
Software system structure diagram
2.1.2 System main interface
System main interface diagram
2.1.3 Brief description of functions
Personnel monitoring and management: Use active RFID radio frequency identification technology to realize the functions of personnel positioning, tracking monitoring, and alarm management.
Area management: Real-time display of the number of people and personnel information in a certain area, and realize area alarm management.
Alarm management: display cross-border alarm, call for help alarm, remove wristband alarm, equipment failure alarm, etc.
Track query: query and print historical tracks, historical data reports, etc.
Vehicle management: daily staff vehicle management, and patient vehicle route management, including vehicle entry and exit statistics, vehicle driving route, trajectory tracking, and GPS linkage management of out-of-hospital vehicles.
Video surveillance: Integrate the existing video equipment in the mental hospital, provide video viewing function, and provide video linkage function when alarming.
2.2 Application function
2.2.1 Real-time personnel positioning
Personnel tracking and positioning uses RFID technology to meet the needs of regional management and monitoring of the flow of hospital personnel. The system can display the location and status information of the personnel in real time according to the information of the radio frequency card worn by the patient, and can be marked on the map as needed.
The personnel positioning effect diagram is as follows:
Personnel positioning effect map
Personnel information query icon:
Personnel information query icon
2.2.2 Area Management
It can display the distribution of personnel in the monitoring area in real time, and display the location and status of personnel in real time. Display area information and update information in real time. Including regional historical information record query.
To track and manage the location of the designated patient with a card, display the movement track of the designated patient, and grasp the scope of their daily actions. For some key patients, the possibility of escape can be judged and necessary precautions can be made in advance.
2.2.3 Track record and playback
The system can record the movement trajectory of each patient and guardian in real time, and provide query historical location record data. At the same time, it can play back the track data of any mental patient or guardian, and play it back on the map according to the time period (with or without track, setting the playback speed, etc.).
2.2.4 Alarm management
The system can perform real-time positioning and abnormal alarm for patients. General alarms have the following categories:
Overtime alarm
For the designated label setting, stay in a designated area for no longer than the designated time, if it exceeds the designated time, it will alarm. The patient’s stay time in the designated area can be limited to prevent dangerous situations from occurring.
Overcrowded Alarm
Set the number of overcrews for certain specific areas. If the number of people in the designated area exceeds the alert, an alarm will be immediately sent. This function can determine the number of people gathered in time, remind medical staff to pay attention, and avoid accidents.
Cross-border alarm
For different personnel, different permissions for prohibiting entry and exit are set for certain key areas. If an unauthorized person enters or leaves the designated area illegally, the police will immediately report to the police to remind the relevant personnel to take action.
Call for help
Medical staff or patients wear a wristband with a help button. Once an emergency occurs, they can press the alarm button. The monitoring center positioning system will receive the alarm information and alarm location in time, and quickly find the scene of the incident.
Wristband snipped alarm
The wristband card worn on the patient’s hand requires special equipment to remove it. If the wristband is forcibly disassembled or cut illegally, the wristband label will continuously send the same illegal disassembly or cut alarm information.
Equipment failure alarm
It is mainly used to give alarms to the failure of wristbands, base stations and other equipment, such as signal disappearance, signal interruption, equipment battery power shortage, equipment damage, etc.
Schematic diagram of alarm information query:
Schematic diagram of alarm information query
2.2.5 Time Attendance Patrol Management
The personnel positioning management system can provide functions such as patrol management, personnel attendance daily reports and detailed reports.
Patrol management
Through the patrol task settings, you can manage the patrol tasks, including query, add, modify, and delete functions. The patrol management interface is shown in the following figure:
Patrol management operation interface diagram
Staff attendance
Through the attendance monthly list in the system, you can query the attendance status of the nursing staff/patients for a month according to the conditions. The operation diagram of the attendance monthly list is as follows:
2.2.6 Video linkage management
The video linkage function is to bind the base station with the video surveillance equipment. When an alarm occurs, the system will promptly call the video surveillance equipment to the place where the incident occurred and record the video information of the alarm location, and vice versa, that is, when the surveillance equipment finds that there is When a suspicious situation occurs, the system will promptly call the intelligent management system to locate, analyze and record the personnel in the monitoring area.
The system can directly use the existing video equipment in the mental hospital without the need to purchase additional video equipment to realize the video linkage function and reduce the construction cost.
2.2.7 Vehicle monitoring management
Intelligent vehicle management includes daily staff vehicle management, and route management of vehicles for picking up and receiving patients.
Vehicle Information
By issuing a card for entering and exiting vehicles, the vehicle information can be combined with the card, enabling vehicles to enter and leave the hospital without stopping, determine the location of the vehicle in the hospital, and control the vehicle location information, personnel information, and movement information of the vehicle in the hospital in real time.
Route management
Combined with the GPS system, it monitors the walking route of the outgoing vehicle, whether it is driving according to the prescribed route, and controls the position and status information of the outgoing vehicle in real time.
2.3 Extended functions
2.3.1 Hospital asset management
Install active/passive electronic tags on the assets that need to be managed to realize the intelligent management of assets:
Real-time monitoring of important assets
For important assets in the hospital, active electronic tags are installed. Electronic tags can integrate multiple sensors. When the goods are abnormal, such as vibration, tilt, or torn tags, the system will actively alarm.
Track tracking and playback
Where a signal receiver is installed and there is signal coverage, the location of the designated goods can be tracked and managed, and the movement track of the goods can be displayed. And you can select a certain time period to replay the movement track of the goods in that time period.
property assessment
For important assets installed with active electronic tags, the system can perform real-time automatic inventory and locate the storage location of each asset.
For general assets in the hospital, UHF passive tags can be installed for each asset. During inventory, the system automatically generates an inventory list and synchronizes it to the handheld PDA. The staff can take inventory with the PDA and upload the inventory results to the management system. Finally Automatically generate inventory report.
2.3.2 Access Control Management
The management of psychiatric hospitals is stricter than that of ordinary hospitals. It has certain specificity and compulsion. It has stricter and more accurate requirements for identification of personnel and permissions. The system can integrate fingerprint recognition, face recognition and other technologies. The passage is strictly controlled, and only personnel who meet the authority can pass.
Access control
3 Overall scheme design
3.1 The overall layout design of the system
The system arranges locators in the indoor and outdoor rooms, floors, squares, walls, passages and other places in the hospital to realize personnel positioning and base stations to achieve signal coverage, and distribute corresponding electronic tags to the mentally ill persons who need to be monitored. , So as to realize the monitoring and management of patients.
Description of distribution situation:
Locator: Active transmitter. When the identification card enters the low-frequency signal range, it can receive the 125KHZ low-frequency signal continuously sent by the locator. It is divided into four antennas and two antennas. Each antenna signal includes its own number. It can be used to distinguish and identify different locator numbers. It can be combined with the existing building environment of the hospital to locate corridors, rooms, or to judge the entrance and exit of personnel, etc. The signal range in the actual environment is 0-5m.
Outdoor base station: used to cover all open environment signal reception in non-buildings in the hospital.
Indoor base station: used to completely cover the reception of signals inside all buildings.
3.2 Overall system architecture
Schematic diagram of the overall system architecture
The overall structure of the system mainly includes four parts: front-end data acquisition system, data transmission system, data processing service system and Web upper application system.
The front-end data acquisition system is an RFID wireless transmission system, which is mainly composed of a wireless radio frequency wristband identification card, a low-frequency locator, an RFID base station, and a field bus/local area network. Its main function is to wirelessly collect target location data and other data sent by the identification card.
The data transmission system is mainly composed of a data collection computer, a data server and a dedicated upload line. The main function is to upload the collected data to the data center for storage and processing.
The data processing service system mainly includes GIS system, application server, system management workstation, etc. The system is located in the monitoring center, and its main function is to analyze and process data and provide various data services for the upper application system.
The upper-level Web application system mainly uses the data collected by the collection system to display various business functions through the software platform, display intuitive effects to the hospital management, and realize statistical management of various data reports.
4 Product configuration
4.1 RFID base station
Product Image
Outdoor base station Indoor base station
product description
The TZBS type base station is a long-distance active RFID reading and writing device, which has the characteristics of long recognition distance, high sensitivity, fast recognition speed, and strong anti-interference ability. It is directly fixed by screws and is firmly installed. It can be used indoors and outdoors. It is widely used in areas such as the location and tracking of personnel and assets in the area, and access control management.
The TZBS base station carries out two-way data communication with the monitoring center through Ethernet or RS485, uploads all the information of the identification card to the monitoring center in real time, and provides the system with high-precision and real-time data.
Main Specifications
Indoor base station:
Displacement speed: 180km/h
Concurrent identification number: more than 500
Missing reading rate: 10-4
Recognition angle: support omnidirectional and directional (horizontal 45°, vertical 45°)
Polarization method: vertical polarization
Gain: omnidirectional antenna 3dBi directional antenna 14dBi
16 levels adjustable for receiving, 16 levels adjustable for transmitting
Working frequency: 2.4～2.483GHz
Power consumption standard: RF working power consumption is milliwatt level
Security: Encryption algorithm and matching mechanism to prevent link detection and cracking
Shell material: aluminum profile
Environmental adaptability: Waterproof and shockproof design, meeting the requirements of industrial environment, protection grade IP31.
Interface standard: RJ45, RS485
Power standard: DC12V～48V
Dimensions: 156.5×104×28.5(mm)
Weight: about 0.3kg
Working temperature: -20℃～60℃;
Storage temperature: -40℃～60℃;
Installation method: top-mounted or side-mounted, fixed with screws
Outdoor base station:
Displacement speed: 180km/h
Concurrent identification number: more than 500
Missing reading rate: 10-4
Recognition angle: support omnidirectional and directional (horizontal 45°, vertical 45°)
Polarization method: vertical polarization
Gain: omnidirectional antenna 3dBi, directional antenna 14dBi
16 levels adjustable for receiving, 16 levels adjustable for transmitting
Working frequency: 2.4～2.483GHz
Power consumption standard: RF working power consumption is milliwatt level
Security: Encryption algorithm and matching mechanism to prevent link detection and cracking
Shell material: ABS engineering plastic
Environmental adaptability: Water-proof and shock-proof design, meeting the requirements of industrial environment, protection level up to IP65.
Interface standard: RJ45, RS485, CDMA
Power standard: DC12V～48V
Dimensions: 185×132×75(mm)
Weight: 1.7kg
Working temperature: -20℃～60℃
Storage temperature: -40℃～60℃
Installation method: side installation, supporting special installation back plate, hose clamp binding or screw fixing
Detailed description
Operating mode
TZBS type base station is a long-distance active RFID reading and writing device, which can receive TZTF series identification card information in real time. Carry out two-way data communication with the monitoring center through Ethernet or RS485, upload all the information of the identification card to the monitoring center in real time, and provide the system with high-precision and real-time data.
Frequency band selection
The 2.4G frequency band is selected, which belongs to the open ISM microwave frequency band in the world, and there is no need to apply and pay.
Recognition distance
The design adopts high-performance radio frequency solutions to realize long-distance radio frequency identification. The recognition distance is as follows:
Omnidirectional antenna 120 meters (with TZTF series identification card, no obstruction in the air),
Directional antenna 300 meters (with TZTF series identification card, no obstruction in the air);
When users have different requirements for identification distance or the application environment is more complicated, identification cards and base station receiving antennas with different signal strengths can be selected, and the receiving sensitivity of the base station can be adjusted by software to achieve the required identification distance.
Displacement speed
Using high-speed radio frequency identification technology, the identification speed is fast. When the maximum displacement speed of the identification card is 180km/h, it can still be reliably identified.
Concurrent identification number
Using a high-speed processor, combined with a variety of radio frequency anti-collision mechanisms, it can identify more than 500 identification cards at the same time, and the number of concurrent identifications is large. The miss rate is less than 10-4.
Communication security
Using a special communication protocol and address matching mechanism, coupled with a complete encryption algorithm, can ensure the security of data communication between the base station and the identification card, and prevent link detection and data cracking.
quality assurance
The production process is strictly controlled in accordance with ISO9000 quality standards to ensure product performance and quality.
Interface standard
The base station provides RJ45 and RS485 standard interfaces.
Flexible power supply
Support DC12V～48V, POE power supply, solar energy and other power supply methods.
typical application
The base station has a wide range of applications, including: the location and tracking of personnel and assets in the area, and access control management.
4.2 RFID electronic wristband
Product Image
product description
The TZTF type wristband identification card is an active active identification card, which works at 2.4GHz, transmits its own identification information regularly, and is powered by a built-in rechargeable battery. The identification card has the characteristics of long identification distance, low power consumption, maintenance-free, etc., and contains an excellent anti-collision mechanism inside, which is suitable for applications with multiple identification cards.
The TZTF type identification card has the function of wristband status detection. When the wristband is disconnected, an alarm message will be sent out, real-time monitoring of whether the wristband has been illegally disassembled and the function of calling for help and alarm.
Structure
The identification card is stylish and beautiful, compact in structure, sturdy and durable, light in weight, easy to carry, install and use. The dustproof and waterproof grade reaches IP67.
shell material
Shell: PC engineering plastic;
Strap: Silicone.
Case size
Case size: length × width × height (mm) = 58 × 46 × 23 (mm).
technical parameter
Radio Frequency (2.4GHz)
1) Working frequency: 2.4GHz, 125KHz;
2) Transmission rate: 250kbps;
3) Transmitting power: ≤3dBm, adjustable;
4) Receiving sensitivity: -101dBm, adjustable;
Recognition distance:
1) The identification distance with TZBS series base station is as follows:
2) 120 meters of omnidirectional antenna (no obstruction in the air),
3) Directional antenna 300 meters (no obstruction in the air);
The recognition distances with TZPR series handheld readers are as follows:
1) Built-in antenna 50 meters (no obstruction in the air),
2) 120 meters of omnidirectional antenna (no obstruction in the air),
3) Directional antenna 300 meters (no obstruction in the air);
4) Recognition distance with TZLF series locator: 5～8 meters;
Electrical characteristics
1) Rated working voltage: DC 4.2V;
2) Battery: It can be charged wirelessly, and it takes 5 hours to fully charge at one time;
3) The service life of a charge: not less than 3 months.
Working conditions
1) The identification card can work normally under the following conditions:
2) Working temperature: -20℃～60℃;
3) Average relative humidity: ≤95% (+25℃);
4) Atmospheric pressure: 80kPa～106 kPa;
4.3 Locator
Product Image
product description
The TZLF type locator (hereinafter referred to as the low-frequency locator) is an active transmitter that continuously sends 125KHZ low-frequency signals at a certain frequency. The signal includes its own number for distinguishing and identifying different locators.
If the identification card with low-frequency receiving function is not within the signal range of the low-frequency locator, the identification card is in the standby state. When the identification card enters the signal range of the low-frequency locator, it can automatically receive the low-frequency signal and analyze it.
Main Specifications
Working temperature: -20℃～60℃.
Storage temperature: -40℃～60℃
Working frequency: 125KHz.
Working voltage: AC220V.
Shell material: ABS engineering plastic
Environmental adaptability: Water-proof and shock-proof design, protection level reaches IP31.
Installation method: buried installation, top-mounted or side-mounted, fixed with screws, avoiding close to large areas of metal.
Detailed description
Operating mode
Low-frequency locator, the low-frequency signal range is approximately spherical, with the low-frequency locator transmitting antenna as the center of the circle, and the theoretical signal radius is 2-8m.
The low-frequency locator has a multi-channel transmission function, which transmits radio frequency data every set time. The radio frequency data includes the number information of the low-frequency locator.
Recognition distance
In all kinds of barriers except metal barriers, and in the case of no barriers, it is 2m—8m; the identification card used to receive low-frequency signals is different, and the recognition distance is also different.
Installation requirements
The low-frequency positioner can be installed on the wall or on the ceiling. The low-frequency transmitting antenna can be led out and installed at the location where signal coverage is required (currently, the antenna extension line can be extended to 20m, and basically does not affect the signal radius of the antenna). The antenna can be fixed by screws or pasting.
Precautions for use
The locator antenna cannot be attached to metal, at least 2cm away from metal.
If the identification card is within 25cm of the locator’s transmitting antenna, self-protection will occur due to too strong low-frequency signals, which will affect signal reception.
When in use, install the low-frequency locator on the wall or ceiling, and the low-frequency transmitting antenna is led out from the low-frequency locator housing through an extension cable and fixed in the range that needs low-frequency signal coverage. If you want to monitor the door, fix the antenna at the center of the side of the door. When a person wears an identification card that can receive low-frequency signals and passes through the door, the identification card can receive the locator number and upload the number via 2.4G. Therefore, it can be accurately determined that the wearer of the identification card appears near the doorway.
By analogy, two locator transmitting antennas can also be used to cover two doors, or inside and outside the door, to judge the entry and exit of the identity card wearer.
4.4 Product features
Wristband advantages:
It supports three-frequency working mode, which can be used for personnel identification, location tracking and micropayment functions, and the protection level is high.
The wrist strap is anti-disassembly and has triple protection measures. Use a special unlocking tool to unlock, and the inner shell is provided with an alarm button.
There are custom buttons on both sides of the wristband shell, and its functions can be set according to actual needs. At the same time, it has an LED indicator.
The length of the wristband is adjustable, suitable for people with different wrist thicknesses, and the wristband has a disconnection monitoring alarm function.
Provides charging function and adopts wireless charging method to extend the service life of the wristband.
System advantages:
Can reliably identify fast-moving targets
Use AES encryption technology to encrypt the transmitted data to ensure the reliability and safety of data transmission
The positioning radio frequency card is small in size, easy to carry, install and hide
The transmitter power of the positioning radio frequency card is extremely low, which is safe for the human body
The base station is small in size, easy to install and maintain
Strong signal penetration and diffraction ability, high integration, good compatibility, simple and fast communication
The radio frequency card can adapt to various environments of -35℃～+60℃, and can be repeatedly disassembled and used
5 Software operating environment configuration requirements
5.1 Software environment
5.1.1 Server
Supported operating system: equivalent to Windows Server 2003 Standard Edition.
Supported database: MySQL 5.5 or above.
5.1.2 Client
Supported operating system: Windows XP Professional SP3 and above.
32-bit operating system, 64-bit is not supported.
5.2 Hardware support environment
5.2.1 Server
Basic requirements for server performance configuration
CPU: Dual-core processor.
Memory: ≥4GB ECC DDR3 1066MHz (2G*2 configuration), maximum support ≥8 memory slots.
Hard disk: ≥100G.
Network card: The motherboard integrates dual gigabit adaptive network cards, supporting network features such as wake-on-LAN, network redundancy, and load balancing.
According to the basic requirements of the above server configuration, it is recommended to equip at least 4 servers.
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