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one, system introduction
Police guns are a special tool to deter crime, so the management of police guns is particularly important. The management of police guns refers to the effective monitoring and management of guns in the storage, warehousing, transportation, use, carrying, and return. If the supervision is not in place, it will bring major security risks to the country and society.
This system uses RFID technology to be applied to the management of armed police guns, and uses the RFID gun monitoring cabinet to monitor the number and number of the guns in the cabinet in real time. It does manage all the links before, during, during, and in use, and return of the guns, and report the abnormal movement of the guns to the system monitoring center in real time.
This system is an automatic identification technology, a scientific and technological means that can effectively monitor the expenditure of guns online, and is an effective tool for tracking management and statistical management.
two, Problems that this system can solve
1. Provide a strict and convenient gun acquisition management mechanism
2. The management personnel can grasp the status of the guns in real time, and realize the management method of transparent information
3. Solve the hidden safety hazards caused by human factors
4. Prevent the occurrence of misconduct by technical means
three, This system contains the following parts:
1. Real-time monitoring and management of gun warehouses
2. The guns were taken out of the monitoring and management of the duty post
3. Management of guns being taken out of shooting range
(one) RFID Electronic Tag for Firearms
1. Firearms RFID electronic tags use 2.4G active electronic tags, each tag is assigned a unique ID number, and the gun’s number, model, production date and other information are associated in the system
2. The RFID electronic tag of the gun is bound to the gun using a keychain to prevent the electronic tag from being abnormally separated from the gun or the anti-disassembly electronic tag is pasted on the gun with 3M glue. Once it is not authorized for mandatory removal, an alarm will occur
(two) Approval process for gun acquisition
1. When a police officer (assignment personnel identification card) needs to obtain a gun, apply for the gun model in the system
2. After the police officer reviews the application, the system assigns the corresponding guns, and the guns are marked as available for use in the system
3. Police officers swipe their identification cards to enter the gun storeroom to obtain the corresponding guns, unauthorized officers or guns that do not correspond to the guns cannot get the corresponding guns.
Four, Monitoring and management of guns at duty posts
1. RFIDReceiver communication
The online CMC191 device has a’heartbeat’ mechanism, that is, after the computer is successfully connected to the CMC191 network, the CMC191 will send a heartbeat packet to the computer every two seconds. If the computer does not receive a heartbeat packet for more than 3 seconds, an alarm will be triggered.
2. Each system branch and system center report the system status in real time
Each system branch sends its own system running status to the remote system center in real time, and the system center determines whether the current branch system is normal, otherwise an alarm is triggered.
Five, related hardware introduction
1. RW-R801Type industrial grade omnidirectional reader
Product technical characteristics
Recognition distance: 0～100m radius
Recognition speed: 200 km/h
Recognition ability: Recognize more than 500 labels at the same time
Recognition angle: omnidirectional
Polarization method: vertical polarization
Gain: 5dBi, 32 levels adjustable for receiving, 4 levels adjustable for transmitting
Working frequency band: 2.4 GHz ~ 2.4835 GHz
Power consumption standard: working power is milliwatt
Communication mechanism: Based on HDLC time division multiple access and synchronous communication mechanism
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Security: Encrypted calculation and security authentication to prevent link detection
Interface standard: RS232, RS485, Wiegand26, RJ45, TTL, WiFi, etc. optional
Expansion I/O: 2 channels of switch signal input and output (optional)
Power standard: DC 7.5～12V 500～1000mA
Package characteristics: Aluminum alloy shell package
Reliability: Anti-lightning and anti-impact, meeting the requirements of industrial environment
Size: 110×100×28mm (without antenna)
Weight: 0.22kg
Installation method: bolted or nailed, tied
Operating mode
The working mode of the reader is “passive or active”. In general applications, the reader is in the receiving state, receiving the signal from the “active” active electronic tag in real time, and forwarding the received data to the background management system . In special applications, you can also write data to tags or change parameters.
Recognition distance
The reader is matched with the company’s “active” active electronic tags. In a good visual environment, the maximum recognition distance can reach a radius of 100 meters. Compared with passive tags in specific applications, super-strong signal and super-long recognition distance have great advantages.
When the user has different requirements for the recognition distance or the application environment is more complicated, active electronic tags and readers with different signal strengths can be selected, and the gain of the reader can be adjusted by software to achieve the required recognition distance.
Recognition speed & ability
When the active electronic tag runs at a maximum speed of 200Km/h within the effective identification range of the reader, stable identification can be ensured. This feature can completely guarantee the identification of people and objects in high and low speed motions.
The reader can read more than 500 active electronic tags at the same time, and the recognition accuracy rate is 99.999%; it can ensure that all identifications are not missed in a very short time. This feature is particularly suitable for personnel management of schools, super large enterprises and institutions, as well as a large number of asset monitoring positioning and warehouse management applications.
Communication security
When the reader and the supporting active electronic tag communicate, a special communication protocol is used to verify the legitimacy of the device, and a complete encryption algorithm has been developed to prevent data cracking to ensure data security in the communication process.
Reliable work
The product fully considers the application requirements of industrial environment such as lightning protection, waterproofing, and impact protection; the production process is strictly controlled in accordance with the ISO9001 quality standard for multi-step process control to fully ensure product performance and quality.
Interface standard
The reader can provide standard hardware interfaces such as RS485 weigand26 RJ45 TTL. If you need an interface such as RS232 or WiFi, please specify when ordering.
1. The company provides a standard software interface that complies with the Windos series operating system platform, and provides the underlying communication protocol
2. RW-T811Type keychain electronic tag
Product technical characteristics
Recognition distance: 0 ~ 100 meters adjustable
Recognition speed: 200 km/h
Recognition ability: 200 frames per second anti-collision performance
Recognition method: omnidirectional recognition
Fixed gain: 0～3 levels can be selected on demand
Working frequency band: 2.4 GHz ~ 2.4835GHz
Communication rate: 250K, 1M, 2M b/s three options
Communication mechanism: Based on HDLC time division multiple access and synchronous communication mechanism
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Security: Encrypted calculation and security authentication to prevent link detection
Read and write function: 176B or 1KB storage space (optional)
Power consumption standard: The average working power is microwatts
Battery configuration: button type lithium manganese battery, capacity 246mAh
Service life: about 1~3 years, replaceable battery
Voltage detection: When the voltage is lower than the preset value, it will be prompted by a wireless signal
Packaging characteristics: ABS engineering plastic, resistant to high-strength drops and vibration
Environmental characteristics: Working temperature －40℃ ～85℃
Working humidity <95%
Reliability: Waterproof and shockproof, meeting the requirements of industrial environment
Appearance: Water drop type, OEM customized service can be provided
Size: 40×28×8 mm
Weight: 8g
Installation method: hanging buckle or double-sided adhesive paste
3. RW-T737Type dual frequency anti-theft tag
Product technical characteristics
Recognition distance: adjustable within 120 meters
Recognition speed: 200 km/h
Recognition ability: 200 frames per second anti-collision performance
Recognition method: omnidirectional recognition
Working frequency band: 2.4 GHz, active 125KHz
Communication rate: 250K, 1M, 2M b/s optional
Communication mechanism: Based on HDLC time division multiple access and synchronous communication mechanism
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Security: Encrypted calculation and security authentication to prevent link detection
Read and write function: 176B or 1KB storage space (optional)
Sound and light warning: Built-in buzzer and LED light
Anti-dismantling function: Anti-dismantling alarm function (optional)
Power consumption standard: The average working power is microwatts
Battery configuration: button type lithium manganese battery, capacity 246mAh
Service life: about 1~5 years, replaceable battery
Voltage detection: alarm when the voltage is lower than the preset value
Packaging characteristics: ABS matte material, resistant to high-strength drops and vibration
Environmental characteristics: Working temperature －40℃ ～85℃
Working humidity <95%
Reliability: Anti-shock, meet the requirements of industrial environment
Appearance: Small square type, OEM customized service can be provided
Size: 35×28×9mm
Weight: 12g
Installation method: paste or hang buckle
Operating mode
The dual-frequency electronic tag usually enters sleep mode. When it receives an activation signal from an activator, the low-frequency chip of the tag will analyze the activator number in real time, and at the same time detect the RSSI field strength value of the low-frequency signal, then wake up and transmit Enter the MCU microcontroller, and then turn on the onboard 2.4G radio frequency chip to perform a strong signal transmission (the wireless transmission data packet contains the tag ID, activator number and RSSI value).
The 2.4G reader/writer within the effective recognition range will receive the data packet transmitted by the tag in the 2.4G frequency band, analyze the tag ID number, activator number and RSSI value in the data packet and upload it to the host computer immediately. When in use, it only needs to be installed to the specified location, and it can enter normal operation after power-on, without communication setting and debugging.
Basic application:
Channel and boundary control: It can be judged where the label has passed (the physical location of the activator)
Access control: When an activator is installed inside and outside the access control, accurate access judgment can be made according to the order in which the tags are activated.
Floor judgment: accurate floor judgment can be carried out.
Real-time positioning: within the coverage of one or more activators, accurate position determination can be made according to the field strength value detected and uploaded in real time by the tag, with an accuracy of up to 10 cm.
Recognition speed & ability
The signal emitted by the tag and the activator can be continuous or pulsed, so for different applications, different recognition speeds and recognition capabilities can be achieved by adjusting the working mode and parameters. A good performance balance is achieved between speed and power consumption.
Communication security
The dual-frequency electronic tag uses a special communication protocol and proofreads the head feature code, which can effectively eliminate all kinds of electromagnetic interference and ensure the data security of the communication process.
Reliable work
The product fully considers the application requirements of industrial environment such as lightning protection, waterproofing, and impact protection; the production process is strictly controlled in accordance with the ISO9001 quality standard.
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