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1. Program overview
1.1. Main goals
The fire rescue equipment management and dispatch system plans to use RFID (radio frequency) technology for existing fire fighting vehicles, equipment, fire extinguishing agents and other materials, and combine network communication technology, data transmission technology, data storage and other technologies to build a set of intelligent fire protection Equipped with an electronic management platform, the entry and exit of fire-fighting materials can be effectively managed and supervised, and real-time data support can be provided for leadership decision-making.
2. Design criteria
Advanced
The overall architecture design of the system must grasp the development direction of computer technology, communication technology, network technology, and sensor technology, adopt advanced system structure, and reasonably select software and hardware technology and equipment to build the system and operating environment to ensure that the system has a certain degree of technology. Ahead of time.
reliability
Reliability refers to the reliable and stable operation of the system, with strong fault tolerance and the ability to deal with emergencies. The stable working ability of computer equipment and related software, the fault-tolerant operation ability of the system after a certain software hardware failure, the time and comprehensive cost of interrupting system operation during the recovery of the environment or itself after a disaster, etc.
Openness
The fundamental purpose of system construction is to apply and share information. Therefore, the various software and hardware technologies and products used in the system construction must be open and follow the existing relevant international standards and national standards or industrial standards in order to fully select suitable and compatible products according to the needs.
Scalability
Scalability is a very important technical requirement for system integration. With the expansion of the project, it will gradually cover other fire squadrons in the city, the coverage area will continue to expand, and the information flow will continue to increase. This requires that the software system must have good scalability and upgrade capabilities. With the development of technology and information Expansion to ensure that the system can be upgraded smoothly.
Easy maintenance
The planning and design of the system should fully consider the ease of maintenance of the system, facilitate the management and adjustment of the system, and facilitate the management of all equipment in the system, especially the management of readers, for centralized configuration, monitoring, session control, function setting, Authority setting and access control.
3. Overall design
System principle
1. First, configure labels for fire-fighting equipment, so that each equipment is bound with a label (tentatively 3M adhesive paste method);
2. Secondly, place 2.4G readers in the warehouse area, and achieve full coverage of 2.4G signals with consideration of occlusion;
3. The tag sends ID codes periodically, and the reader receives the binding tag information, indicating that the equipment is in the library. If the tag ID of a certain binding device is not received within a certain period of time, the system will prompt to leave the library, and manual confirmation is required. Whether it is out of the library normally, or the label is invalid.
4. Fixed readers are installed on both sides of the gate of the squadron, which are placed on the fire truck after the equipment is out of the warehouse. The information of the equipment tags on the vehicle can be read when entering and leaving the gate. The software monitoring page prompts the current equipment information of the vehicle out of the warehouse. Manually determine whether to leave the warehouse with the car or enter the warehouse with the car.
5. The mobile terminal also has the functions of scanning out of the warehouse, scanning in the warehouse, and asset inventory. After scanning, the data is automatically updated to the software system through the wireless network.
Automatic supervision of warehouse items
system structure
Basic functions of warehouse automatic supervision
1. The reader can use directional or omnidirectional antennas as needed to achieve 2.4G signal coverage, and the range can be set;
2. After the 2.4G reader receives the tag ID, it uploads to the system through RS485/RJ45, the system compares the information, and automatically displays the inbound and outbound information on the interface in time, and automatically realizes the warehouse outbound and inbound;
3. The reader has two working modes: active upload and receiving command upload;
4. The system processing speed is fast, and the read response is no more than 3 seconds.
Equipped with vehicle entry and exit supervision system
system structure
Equipped with the basic functions of the vehicle entry and exit supervision system
1. Install a reader on each side of the gate to realize the full coverage of the gate range by 2.4G signal, the size of the range can be set;
2. After the reader receives the tag ID, it uploads the system through RS485/RJ45, the system compares the information, and automatically displays the equipment information collected on the vehicle at the gate on the monitoring screen. The operator confirms whether it is taken out with the vehicle, and then judges if it is confirmed. Out of the warehouse with the car;
3. At the same time, the system can call out the automatic outbound information of the current warehouse, and compare it with the outbound information on the vehicle. If there is any discrepancy, an alarm can be issued;
4. The system processing speed is fast, and the read response is no more than 3 seconds.
Specifically:
1. The system construction mainly includes the following parts: 2 sets of handheld mobile terminals; 10 sets of fixed readers for 2 squadrons, 200 electronic tags for each squadron, and customized development of electronic management application software for related fire-fighting equipment.
2. The commonly used key equipment uses active RFID cards as tags, and the tags must meet the requirements of general protection. The tag recognition distance can reach 50 meters, the communication rate can reach 1Mbps, the conflict prevention strategy of no less than 500 cards, and the one-time service life of the battery is no less than 3 years.
3. The hand-held mobile terminal is used to check on-board equipment and inventory equipment. The fixed reader/writer is installed at the guard’s booth. When installed at the entrance of the squadron, the RFID tags on these items are read by the base station’s read-write equipment, and their information is transmitted to a network server dedicated to managing fire-fighting materials through the network, and is recorded in the database. If you need to accurately determine the in-out of warehouse materials, you can install a fixed reader in the warehouse to read the label information in real time. Once the label information cannot be read within a period of time, it is judged to be out of the warehouse. The identification distance of the fixed identification base station is not less than 50 meters, and the number of identification cards at the same time is not less than 200.
4. The database of the equipment management server needs to be docked with the equipment and asset management system database system in the integrated fire fighting business information system, and the application software needs to be docked with the command system to automatically obtain the required data in the integrated fire fighting business information system.
5. The current stage of the system adopts the localization mode, all data is only downloaded from the fire service information system, and no information is actively uploaded.After the system runs for a period of time, the interconnection of information will be negotiated later
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