Research Of Water Automatic Meter Reading System

As to know, tap water is one of the most important form of urban water supply. But water management has one problem, that is, how to sulute the record of the water meter in a city efficiently and economicly. At present, most of cities also rely on the traditional labor-based work like the door-to-door house to record the water. This working method is not only in the huge expenditure on manpower and resources, but also inevitably exist the error caused by human factors, and may makes the user inconvenience to the daily life. Therefore, we need a more convenient, more scientific and more accurate way to replace the traditional record method. In recent years, as the rapidly development of the information technology, network technology and the district building, automatic meter reading system(AMR) has been appeared.This paper describes a process of developing a complete set of automatic meter reading system. Firstly,it introduces the basic function, basic structure and performance criterion of AMR. The whole AMR is divided into four modules: Digital water meter, Collector, concentrator and PC. Secondly, it describes the communication of AMR and related communication network protocol. Collector uses RS-485 bus to communicate with concentrator and concentrator uses two means - GPRS and Ethernet to communicate with PC, these two means can supplement each other according to geographical circumstance. Thirdly, this paper focuses on the design of hardware and software for automatic meter reading systerm which uses infrared technology to directly read digital water meter. Collector, which uses STC12C5410AD as a controller, is mainly responsible for collecting meter information and transmitting these information to concentrator by 485 bus. Concentrator, which is the hub of the whole system, can communicate with collector and PC respectively. PC sends control orders--such as sending meter data to concentrator and concentrator follows. This system also designes a set of protocol for meter reading in order to meet their communication needs well,Through transplantationμip to achieve network protocol. At last, this paper describes the design of PC software and system debugging. PC software uses SQL Sever technology and Visual C++ programming language, It has a good man-machine interface and information-processing capacity. The design of the whole system takes into account the anti-jamming technology, so the test results indicate that it has good performance, stability, reliability and high accuracy, great practicality and value.