With the improvement of people's living standards, urban pipeline gas is gradually popularized, which brings great convenience to daily life. However, the collection of gas fees is a big problem for gas companies and residents: gas companies send people to read meters door to door, which is labor intensive, wastes manpower, seriously affects residents' lives and is inconvenient for residents to pay fees. Because of this, the gas industry in various countries has been trying to solve this problem.
Overview of the second system
Smart card gas charge management system adopts smart card gas meter, which completely solves the problem of gas charge management by charging first and then using gas.
The hardware part of IC card gas meter includes:
Basic table: original measured value of gas flow
Control valve: control the closing and opening of the valve by signal.
Controller: including CPU, read-write card interface, display, counting and other auxiliary components, is the core equipment of IC card gas meter, with functions of control, display, alarm and so on.
IC card: record the purchase amount and transmit data information.
Basic functions of the product:
By using computer technology, the gas management department can manage the gas consumption and payment information of users scientifically and modernized.
Using computer and IC card technology to realize pre-charge, put an end to the long-term arrears, the most difficult problem in operation.
When the gas flow exceeds the maximum value specified by the gas meter, the valve can automatically close, cut off the gas source in time, and protect the personal and property safety of the meter, gas cooker and users.
Strict anti-attack design can effectively prevent gas theft.
When the pipeline and the surface are subjected to strong external vibration and impact, the solenoid valve actuator can automatically close the valve.
Main features of the product:
Built-in ESAM embedded security module can automatically complete the collection and measurement of gas flow data, which can meet the interface requirements of different users such as gas companies and banks.
Six-digit counting, five groups of Chinese characters display and sound alarm.
Equipped with our patented explosion-proof solenoid valve and electric valve, the action is accurate and reliable.
Large-scale integrated circuit structure, built-in ESAM, supports the key download of the second generation key management system of the Ministry of Construction, and has perfect technical support in anti-copy and anti-decryption.
Built-in ESAM records operation data at any time.
It has anti-magnetic interference, power-off protection and various anti-theft functions.
Low power consumption design, the power supply is alkaline battery or long-life lithium battery, and the service life of alkaline battery is about one year.
Basic product parameters:
Implementation standard: industry standard number of IC card household thin film gas meter: CJ/T 1 12-2000.
Suitable for gas source medium natural gas, liquefied petroleum gas and artificial gas.
Working power supply LR6 alkaline battery four or lithium battery.
Working voltage DC 6V
Battery life >; 300 days
Steady-state working current < 100uA
Maximum open circuit voltage
Maximum short-circuit current
Class b accuracy
Total pressure loss 10 5
Data retention period > 10 year
Ambient temperature-10-40
Relative humidity 45-93%
The working pressure is 0.5kpa-4.2kpa.
As the core of the charging system, smart card gas meter has the following features in function:
1 Smart card controls the use of gas: the card stores the quantity of medium gas purchased by users. When the quantity is used up, the gas meter valve will be automatically closed to prevent users from continuing to use gas before paying.
2. A variety of anti-theft functions: anti-user disassembly detection function, which can detect that users destroy the lead seal by themselves, disassemble the control box of electronic equipment, automatically record users, and cannot be disassembled; Prevent users from using other people's smart cards. When the user inserts the smart card into the electricity meter, the electricity meter first checks whether the card number is correct. If the card number is inconsistent with the number in the instrument memory, the instrument will close the valve and refuse to use it. Explosion-proof detection measures such as preventing users from reversing the meter to ensure that the legitimate rights and interests of the gas supply department are not infringed; It can automatically detect and record other illegal gas stealing methods of users. Users can't clear it, and the amount of stolen gas can be recorded.
Easy to use: The watch has no buttons or keys.
The electronic control device is sealed, smoke-proof, moisture-proof and mildew-proof.
Gas meters are also unique in technology:
The low cost of 1: the sales price of smart card prepaid gas meters with different levels of functions is about RMB from 400 yuan to 600 yuan, which is only 1/4~ 1/6 of similar products abroad.
Advanced process level and high reliability: the internationally advanced SMD (surface mount) process is adopted, and the designed mean time between failures is more than 15 years.
Low power consumption: patented micro-power valve and foreign customized special micro-power large-scale integrated circuit with international advanced level and independent copyright are adopted.