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ARM9-Based Environmental Monitoring System Data Acquisition Module Design and Implementation

Author: MaNanNan
Tutor: ZhaoYu
School: Tianjin University
Course: Communication and Information System
Keywords: ARM9 Temperaturemeasurement DataAcquisition PT100 Thermocouple
CLC: TP274.2
Type: Master's thesis
Year: 2008
Downloads: 452
Quote: 4
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Abstract


Temperature is a general and important parameter in production process and scientific experiment. In the course of industrial and agricultural production, in order to improve production efficiency, the main parameters,such as temperature, humidity, flow,speed,etc,must be monitored and controlled. Especially ,temperature monitoring occupies a fairly largeproportion.Accurately,measure and effectively control temperature is the important condition of high quality, high yield, low consumption and production safety. With the advancement of technology and social development, the methods of temperature measurement are improved and the measurement accuracy is also advanced, there are still many inadequacies in current temperature monitoring system. It increasingly difficult to meet the need of industrial production and scientific research.We analysed the status quo of the current domestic and external temperature monitoring study, with the most popular embedded system, ARM processor, commonly used temperature sensor, Zigbee wireless network technology, We developed ARM9-based environmental parameters Monitoring System. The 16/32-bit ARM processor S3C2410 of Samsung company as micro-control unit, wireless collection select CC2430 chip wireless data transmission module of TI company, 8 Cable acquisition Channel, various types of temperature sensors can be configurated. The system realizes the temperature (or humidity) acquisition, and the temperature(or humidity)data will be transmitted to monitor console through wired or wireless channel, Monitor console has storage, processing and display equipments,these equipments will display the received data in the mode that the user required. The system is small in size, flexibility, real-time, can be worked in harsh industrial environment to finish important temperature data acquisition. In addition,the research of this system can provide some reference for other environmental parameter monitoring system.Data acquisition module as the acquisition and transmission source of the whole system, occupies an extremely important position. This paper begin with the demonstration of system, focused on data acquisition module design and implementation of hardware and software. Data acquisition module can support 8-channel analog signal input, sensor type includ thermal resistance, thermocouple, the PN junction, the voltage sensor, current sensor. The module can finish data acquisition, signal processing, A/D converter, linear processing, data transmission, and other tasks. With a view to achieve the desired results,use the look-up table and linear interpolation method to process data in software design.In addition, digital filtering and self-correction are also used.Finnally,by debugging data acquisition module with other modeue,the function of the system are basically completed.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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