The application scheme of RFID technology in underground personnel positioning and logistics
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(4) Product picture:
(5) 2.45G vehicle management system scheme:
The administrator registers the vehicle identification card and enters the user information into the upper computer database. The smart label can be attached to any position of the vehicle and can be fixed with screws, tape, etc. Combined with solar cells, the life of the label is longer.
When a vehicle with a tag enters or leaves the gate, the card reader reads the information in the card and uploads it to the upper computer. The upper computer judges the legitimacy of the card, decides whether to open the brake lever, and records the information of the vehicle.
The host computer can perform real-time management of all registered vehicles, including: entry time, exit time, payment information, etc. You can also add new tags and delete expired tags at any time. Vehicles that exceed your authority are deemed invalid but recorded. The upper computer can be connected with the relevant property management department and provide the information required by each department. The system software is a Chinese Windows graphic interface, easy to operate, and functions can be modified as needed. All equipments in the entire parking lot are connected to the computer for unified management.
The application of radio frequency technology in personnel positioning
Unexpected alarm and two-way communication occurred in the 2.4G underground personnel positioning system solution
(1) Overview of 2.4G underground personnel positioning system products:
The underground coal mine personnel tracking and positioning management system is an automatic identification information technology product integrating computer software and hardware, information acquisition and processing, wireless data transmission, network data communication, automatic control and other technologies. The non-contact information collection and processing of moving targets can realize automatic identification of people, vehicles, and objects in different states so as to realize automatic management of targets.
This product combines the characteristics of safe production in coal mines on the basis of summarizing radio frequency identification technology, and through its own technical strength, it can fully meet the requirements of automated management for tracking and positioning of underground personnel in coal mines. At the same time, it can make full use of the existing coal mine monitoring system platform resources in the mine to operate online, effectively saving investment.
(2) System functions and features
1. Real-time underground personnel dynamic display function: query personnel names and real-time query the number of personnel in a certain area; record the attendance of relevant personnel, and can supervise and confirm whether important patrol personnel conduct on-site inspections on time and on-site, or conduct various data inspections and inspections. To deal with it, fundamentally try to eliminate accidents caused by human factors.
2. Abundant map functions: with functions such as zoom in, zoom out, move, ruler ranging, field of view control, center movement, soil layer control, map printing, etc.
3. Restricted area alarm function: For the designated restricted area, if a person enters, a real-time sound alarm will be given and the persons entering the restricted area will be displayed.
4. Personnel trajectory query: you can find the path that a person has gone through in a certain period of time, and draw the line trajectory in the diagram.
5. Abundant personnel down-well attendance ability: it can count the personnel entering and exit the well, realize the attendance record of the down-well personnel, and establish various information reports of personnel entry and exit (such as: down-well time report, attendance monthly report, overtime report, absentee report, etc. ).
6. Post-disaster first aid information: Once various accidents occur, the staff under the coal mine press the alarm case to make the system enter the emergency alarm state. After entering the emergency alarm state, the card reader buzzer host computer can immediately display the number of personnel, personnel information, personnel location and other information at the accident site, which greatly improves the rescue efficiency and rescue effect.
7. Two-way communication of the radio frequency tag: Once the coal mine staff is trapped in the mine, the upper computer can communicate with the tag through the card reader, so that the tag can receive the signal, so that the person trapped in the mine can know his location The host computer has been told that the rescue of him is achievable.
8. The system is designed for safety, stability and reliability. The system product adopts the tunnel wall-mounted design, no need to carry out on-site construction in the tunnel, and guarantees the normal operation of the system for 24 hours in a harsh environment.
9. The system adopts frequency hopping point or fixed frequency point frequency to realize reliable full/half duplex communication. Substation equipment and intrinsically safe identification card adopt a new embedded microprocessor, which has the function of explosion-proof and intrinsically safe design system. Long distance, the recognition range of the system can be adjusted arbitrarily, there is no “blind zone” for recognition, strong signal penetration, high security and confidentiality, no electromagnetic pollution to the human body, strong environmental adaptability, can identify many targets at the same time, and facilitate network connection. advantage.
(3) Work flow:
1. The coal mine production unit installs a certain number of card readers in all roadways according to the site conditions. The specific location of the card reader can be determined according to the actual situation. The installation principle is tightness, safety and convenience.
2. Make coal mine production personnel wear matching tags. The location of the card can be hung in any position, or embedded in production personnel’s shoes, hats and other clothing.
3. The label includes the basic information of the production personnel: name, age, gender, team, type of work, position, personal photo, etc., are logged in the system database.
4. The label can be recognized by the card reader after the safety production department authorizes the label. The scope of authorization includes: whether the production personnel are qualified to enter the tunnel of the work surface, the time limit of the label, invalidation, and loss reporting, etc.
5. When the production personnel wearing the radio frequency tag pass the identification monitoring point of the tunnel, they are immediately recognized by the card reader, and the card reader uploads the read information to the upper computer through the information exchange of the system network, and the road section that this person passes through , Time and other information are transmitted to the well safety monitoring center for records. If the inductive wireless identification card number is invalid or enters a restricted channel, the system will automatically alarm, and the security monitoring center staff on duty will receive an alarm signal.
6. In the event of catastrophic accidents such as landslides and gas explosions, the staff under the coal mine can press the alarm button to put the entire system in an alarm state, which can facilitate the well to notify all staff to evacuate the scene at the fastest speed.
7. In catastrophic situations such as a collapse, if someone is trapped in the well, you can manually press the emergency button. At this time, the tag enters the two-way communication state, and the corresponding indicator will report that the host computer has received the signal. The rescue personnel on the well will formulate the best rescue plan based on the relevant information. At the same time, the signal received for the trapped personnel in the well can also increase him. His desire to survive has enabled the rescue activities to be carried out smoothly.
Application of radio frequency technology in logistics management
2.4G wireless identification application scheme in logistics management
(1) System function
(1) The field of logistics is a more common and mature field of modern information technology applications. The collection and processing of information, the establishment of databases, information transmission and storage, etc., run through every aspect of logistics. As a more professional and efficient information collection and data processing technology, radio frequency identification is applied to the logistics industry.
(2) This application is used to supervise and locate items within a certain range, record related information of items in the electronic tags attached to the items, make the items become information carriers, and realize the effectiveness of the items within the defined range Monitoring and real-time management.
(3) The design of the radio frequency tag meets the requirements of waterproof, anti-magnetic, and anti-static. According to actual needs, the radio frequency card and related objects can be used with screws, adhesives, hooks, etc.
(4) The card reader records the read information in real time within the effective range and uploads it to the host computer to monitor the items in real time.
(5) The management software provides users with effective management measures and means, and can manage and maintain all items.
System plan diagram:
System Features:
The logistics management system mainly uses 2.45G microwave long-distance identification technology, and the distance can reach 1 to 60 meters. The distance can be selected according to actual needs. This frequency band has strong anti-interference ability and good defense performance. After all items are connected with the tag, there is a unique and unchangeable serial number ID card, no mechanical contact action when in use, inductive communication, real-time control and management in the setting area.
The main control computer is connected to the workstation by RS485 bus, which is quick to put into use and the system is stable, so that the entire network can work faster and more smoothly. The distance between the data server and workstation transmitted by RS485 can reach 20km.
It adopts computer control and data processing technology, with high degree of automation and accurate control. The software is based on the Windows platform, with a full Chinese interface, man-machine dialogue, and easy to master; the interface has a record display of all tagged items.
It adopts modular design, flexible combination and reliable performance.
Authorization management method to prevent illegal modification or unauthorized access to the input data, and automatically enter the entry and exit of items.
The standard industrial control system structure can organize the configuration of different systems according to the different requirements of users, which is convenient and flexible.
work process:
First, the system registers the item management tag, and writes the item information into the computer database. The installation of the tag can be determined according to the needs and characteristics of the item.
When the article is within the reading range of the card reader, the card reader receives the information from the article label and uploads the label information to the control computer. The computer records the article information for historical record query.
When the item needs to be taken out of the fixed area, it can be set in the host computer software
The main control computer can be set up inside or outside the venue to monitor and manage the entire contents of the venue. It can monitor the location of each item in real time and automatically record it, including the time when the item enters and exits the specified range, what kind of item it is, and other information. Can also count and query historical data and other tasks. You can add new cards at any time, delete obsolete cards, and expired cards will automatically become invalid. The main control computer can be connected to various departments to provide the required information.
Other logistics applications:
Channel management; warehouse management; container terminal management; store and supermarket management; production line management, etc.
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