Design And Implementation Of The Concentrator Remote Meter Reading System Based On ARM

There are lots of meters in people'daily life, like intelligent ammeters, intelligent water meters, intelligent gas meters, intelligent heat meters etc. Meanwhile keeping the daily copying of these meters become increasingly arduous. Besides, the manual copying, the mistaken copying and missed copying are inevitable. With the rapid development of electronic communication and computer technology, the automatic meter reading replace the traditional meter reading.Concentrator is the data concentrate processor, and the highway of data communication in the multi-object automatic meter reading. Collecting, saving and managing of the meters'data would be the main task of the concentrator. Transmiting data to upcomputer in time and executing the orders come from upcomputer would also be the main of the concentrator. Enhancing the multi-object concentrator's data processing ability and realizing the communication between up and down computers effectively have become the key problems for automation meter reading system to solve.Such a complex communication and control system as the multi-object concentrator was focused. Universal 32 bit high performance built-in microprocessor has been used in the thesis. 32 bit ARM9 microprocessor will be the automatic meter reading'processor in the thesis. The ARM9 processor has high performance in many aspects, for instance, its process speed is high, the power consumption is low, and low price to purchase, while, its high anti-jamming performance, and running well in awful working place make it the industry rank chip. 8/16 bit microcontroller has poor performance in computation, as highly depend on the hardware, it's no so good in soft-ware development, update and transplant. Without the presentation of multitask control mechanism, not only the realization of applications is a big challenge, but also no assurance to the applications'reliability.First, the multi-object remote reading meter system entire structure was researched in the thesis. The software and hardware realization of the concentrator in the system were researched in the thesis. Accomplished peripheric hardware resource's expansion, S3C2410 microprocessor has demanding minimum hardware resource such as external storage, LCD, clock, reset, power supply, RS-485 communication module, CAN communication module. The real-time clock provide standard time to the timing auto-apparatus which equipped multi-object concentrator. While the stabilized power supply of the concentrator comes from the circuit power supply. To ensure the stabilized working of the concentrator as while as avoid system halted, the watchdog module was designed. The main task of the data storage here is storaging parameters, variants, the parameters of concentrator, and managing the data of the intelligence apparatus. We defined the up-link as the communication line between the concentrator and the upcomputer, of which, the communication mode here adopted the CAN field bus; while, the down-link as the definition is the communication line between the concentrator and the apparatus, it adopted the RS-485 communication mode. After the introduce of hardwares, the software part was described. Focus on the data storage function of the multi-object concentrator and its serial communication function, the programme specially were written. The multi-object remote apparatus concentrator based on the ARM technology has much advantage, such as high performance of data processing, making the up and down communication work, and high stable, high cost performance, etc.