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1. System significance
1) Long-distance sensing enables vehicles to enter and exit the fire brigade park quickly without stopping
2) Real-time monitoring of vehicle entry and exit status, and provide real-time warning information notifications to ensure the safe entry and exit of fire-fighting vehicles and fire-fighting vehicle statistics
3) Automatic identification and automatic release of fire-fighting vehicles, eliminating manual intervention and avoiding human operation loopholes
4) Set a safe time zone, and start an alarm when the fire-fighting vehicle goes out in the non-specified time zone to ensure the safety of the fire-fighting vehicle
2. System architecture and program description
The fire brigade vehicle access management system is a set of management system developed by Shanghai Renwei Electronic Technology Co., Ltd. according to the actual situation and demand characteristics of the fire brigade management. It adopts dual-frequency semi-active RFID technology, from dispatching vehicles to vehicle entry and exit monitoring and The vehicle maintenance system is completed, which has the characteristics of advanced, reliable, safe, convenient and fast, which makes the various tasks of vehicle management more organized, and fundamentally effectively solves the problem of fire vehicle management, thereby improving the level of fire vehicle management. .
Schematic diagram of fire-fighting vehicle access management system
2.1 Program description
The activator is installed in the guard room or the surrounding area, and two 125K coils are led out; they are the activation antenna No. 1 and the activation antenna No. 2. When the vehicle with dual-frequency electronic tags enters the unit gate, the distance from the activation antenna No. 1 is 1-3.5 meters The low-frequency activator will emit electromagnetic waves and be received by the dual-frequency electronic tag. The low-frequency electronic tag receives the energy carried by the electromagnetic wave and activates the 2.4G active electronic tag. After the active electronic tag is activated, the electronic The ID information of the tag itself and the ID of the activator are sent to the reader at a certain rate. The reader receives the radio frequency signal from the dual-frequency electronic tag and the IP of the activator and transmits it to the background through the 485 or TCP/IP interface; with the vehicle When gradually entering the inside of the gate, the electromagnetic wave energy carried by the activator gradually weakens until it can no longer activate the personnel dual-frequency electronic tag, and the B activator starts to activate the vehicle electronic tag. After the electronic tag is activated, the ID information of the electronic tag itself and the activator The IP is sent to the reader at a certain rate. The reader receives the radio frequency signal from the dual-frequency electronic tag and the activator’s IP and transmits it to the background through the 485 or TCP/IP interface. Different activator antenna ID numbers make judgments;
Three, case introduction
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