中英文翻譯--智能化煤氣表的設(shè)計(jì)

1、The Design Of Intelligent Gas MeterGas meter is a gas flow meter; they are included in the national directory of strong compulsory seizure test measuring instruments. Gas metering system has been developing constantly. F

2、rom unenlightened mechanical to intelligent nowadays, made people's lives has been facilitated. In the past for a long period of time, we use most of all mechanical in the international, with the continuous advanceme

3、nt of electron technology, electron-type gas meter have also emerged in other country, but there is still a lot of non-convenience. Currently mechanical gas meter give a great deal of inconvenience to management and user

4、s, that is, issue of meter reading. We take original backward artificial way to look-up table charges generally. This charging method has several major disadvantages: occupy a great deal of manpower; Many drawbacks of ar

5、tificially; inefficient and created a great waste of human, material, time to manage department. Therefore, research and development a new type of gas meter charging system is necessary. Abroad, intelligent gas metering

6、system is also developing, and they have automatic billing, as well as alarm function, to protect the benefits of the Gas Company and the users. In China, Gas Meter remains at a fairly low level, most of the products jus

7、t to play a role of switching, and the development of intelligent table also stagnated at a very low level, although there are a lot of manufacturers to product the intelligent gas meter. However, very few sophisticated

8、products; they improve the products on the basis of foreign technology according to the actual situation, mostly the use of IC card technology. and manufacturers can not be simultaneously large quantities of products.In

9、the view the actual situation, we reference to already exist product, according to the idea of it, and to design the intelligent gas meter. the system of the intelligent have application of advanced IC card billing funct

10、ions, use of the remote communications, to connect the computer with all user terminals under control by Single chip, and have the best anti-cheating function, prevent users from stealing gas. To make the gas as a commod

11、ity after first use, the Gas Company can be to accelerate cash flow, eliminate the arrears of the phenomenon of gas charges happened. It completely overcomes the mechanical disadvantage of the gas meter, reduce the artif

12、icial factors; improve work efficiency; saving the managers’ time. At the same time, the metering system also takes a number of ways to enhance its practicality in using, such as transparency of user data, users can view

13、 intuitive their own usage amount, as well as the balance of the card. In order to improve the reliability of the using 11.0592MHz crystal oscillator ,so that more accurate clock, the chip can be used to enter power-savi

14、ng program state on the circuit, that is, when users turn off the gas valve after the gas meter does not apply, the procedure that would allow the circuit to enter power-saving mode, save power consumption.Second, billin

15、g: The gas meter billing system is through non-contactless smart card reader implementation, and using MCS-RC500 contactless smart card reader ---- single-chip communication, program design is flexible, easy to develop,

16、and communicate with the computer, manage the user's data through the computer software. The user must be go to the gas companies to purchase gas before users gas, then, purchase the volume of gas into the user card,

17、 then cards will be purchased the gas into the gas meter inside the house through the card, the electromagnetic valve to be open by control with single-chip microcomputer, the user can be normal use it. Through the flow

18、sensor, the system measured the gas volume has been used and auto to minus the purchase gas, when deposit gas little or deposit gas run out, the electromagnetic valve will be closed and the alarm circuit will be to remin

19、d the user to renew at the same time. Users will once again purchased gas into the card. The circuit through the serial port with the MCS-RC500 communication, therefore the design of hardware circuits adds a MAX232 circu

20、it, implement data exchange of the single-chip with the smart cards. Third, display module: The system shows the use of LCD Module 1602, LCD 1602 is a common 16 × 2 lines, 6 × 8 character dot matrix LCD module.

21、 It is widely used in smart intelligent instrumentation, communications, office automation equipment, and its character generator ROM have some their medium own figures and letters of the alphabet, some special symbols l

22、ibrary of characters, we can use 1602 to set up eight 6 × 8 dot matrix font characteristics of custom ,it be able to meet the requirements for user, and LCD module 1602 suitable size, easy to install, In order to sa

23、ve energy ,the LCD module 1602 ‘power is controlled by single-chip in design, when the system need to display, the power will be supply, otherwise, no power supply. RT1602C use the standard 16-pin interface, which left t

24、his port from 1 foot to 16 foot.No.1 pin:VSS to power ground;No.2 pin:supply voltage for logic; No.3pin:Input for adjusting the LCD contrast,and when the power is the weakest contrast,the highest contrast ratio of ground