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1. Project background
At present, there are many problems in the retail and wholesale markets of liquefied gas. Liquefied gas is flammable, explosive and toxic. The reasonable use and management of liquefied gas cylinders are related to the safety of life and property. Improper handling will cause irreparable lives. The asset and safety issues in the bottled liquefied gas market have attracted the attention of relevant state departments.
How to use high-tech methods to strengthen market safety management, market supply management, and reduce operating costs, so that various measures of the enterprise can be implemented truly and effectively, and strengthening management is an urgent problem that needs to be addressed.
Two, system solutions
1. Overall design ideas
The basic goal of the system is to use advanced RFID technology to realize the full-range management of the filling and circulation process of gas cylinders, and to fix and install a special-shaped identification mark on each cylinder belonging to the filling company through a dedicated method. RFID electronic tags, this system controls the status and behavior of each process in the filling and testing process of gas cylinders, ensuring the safety of gas cylinder circulation, eliminating hidden dangers of accidents, maintaining the personal and property safety of users, and preventing illegal users from making illegal profits.
2. System construction content
A data management center (platform system) is established for safety standards, testing standards, and application standards. The RFID middleware system develops the deployment of various business nodes and terminal systems, and the information collection system integrates the application with the existing monitoring system.
The system uses large-scale database technology, network technology, and distributed computing technology to establish a central database and various business systems.
3. RFID safety mark
The identification and management of the gas cylinder and the electronic label of the gas cylinder uniquely correspond to a set of data information closely related to the gas cylinder. The data in the label is stored through encryption, and relevant enterprise operators can create files, edit and maintain the information through the system software. The filling system can automatically turn on the filling switch through the legal information of the gas cylinder RFID tag, otherwise it will not be filled.
All users in the user identification and management system are issued with readable and writable electronic tag user cards (or supply certificates) as the basis for identification and transaction. All users must first go to the company to go through the relevant procedures, receive the card and recharge. The user card is confirmed and the corresponding amount is deducted through the RFID reading and writing device, and the bottle number is corresponding to it. Operators involved in system operations can be divided into the following categories:
● Gas station management staff
● Cylinder inspector
● Cylinder filling personnel
● Cylinder entry and exit management personnel
● Equipment inspection personnel
● System information management personnel
● Decision-making or corporate management personnel
● System management and maintenance personnel
The system distributes a unique user card for each employee, and the system automatically judges its legitimacy and authority and controls its operation during operation. After each operation is completed, the reading and writing device will report its identification code and operation information to the central management system of the system. So as to achieve real-time tracking and inspection of all personnel operations.
3. Brief introduction of system function
From a functional point of view, the system consists of the following modules:
(1) Intelligent filling system for liquefied petroleum gas
Leading technology
● The system adopts RFID intelligent technology, automatically recognizes the RFID information of the steel cylinder, controls the filling switch, and avoids artificial filling of the black gas tank.
● The system uses the Internet of Things technology to realize automatic printing of inflatable cylinder information, which is directly pasted on the user’s use record book, eliminating the link of manual writing of information and improving the efficiency of filling.
● The system adopts VLSI design, high-speed CPU, and dual real-time data storage, making data retrieval and viewing more convenient and quicker, safer and more reliable, and weighing more accurate.
● The system uses wireless communication and automatic control technology to remotely turn on or turn off system equipment.
Powerful
● It has the functions of checking catty, tare weight, quantitative filling and display, which can realize the accumulation of bottles, the accumulation of shifts, and the total accumulation.
● It has the function of identifying different specifications and models of gas cylinders and automatically setting the filling time interval.
● It can check the annual refilling net weight, the number of refills and the last 10 refilling records.
● Electronic lock function, the user only needs to enter the password through the keyboard of the filling scale to lock part or all of the setting functions.
● High-quality imported electromagnetic control valve, 300,000 times of opening quality assurance.
● The fine filtering function can ensure the purity of the filled LPG even in the case of large flow.
High security level
● Large-size LED and LCD display with backlight, more clear and beautiful.
● Special wide temperature design, it can work normally under the condition of +55℃～-40℃.
(2) Information management system
1. The data management center of this system includes the processing of the supply chain data of the filling company’s import, sales, and storage, and the processing of the safety production and inspection data of the Technical Supervision Bureau, as well as the management of various business systems. It can carry out illegal users and equipment Call the police. Use Portal technology to integrate the RFID system with the original video surveillance system. Achieve unified display.
2. Perform dynamic statistics and management of gas cylinders entering and leaving the filling station. With the support of special software, the intelligent filling equipment communicates with the server of the filling enterprise management system in real time. Information, when there are various problems in the gas cylinder, the smart device will send out an alarm through sound and text, and ask the operator for necessary treatment.
3. The system provides various report output functions according to actual needs, and can quickly output the necessary documents such as gas cylinder outgoing orders, storage orders, quality inspection notices, scrap notices, measurement settlement orders, etc.
4. The system provides a complete combined query function, and the operator can quickly retrieve the data information and historical records of interest from the massive data according to various conditions.
5. The system provides the authority of the Technical Supervision Bureau, which can set the upper limit control of each filling volume of different specifications and models of gas cylinders, as well as the charging interval of the same gas cylinder. It can also remotely turn off the inflator of each gas station. Dynamic analysis and early warning of bottle filling frequency.
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