High-precision Temperature Monitoring Instrument With Many Ports Based On ARM And μ C/OS-Ⅱ

In the field of industry, the temperature, pressure, flow are three most common physical parameters monitored, among them the most extensive one is still the measurement of the temperature.With the development at full speed of electronic technology and computer technology, the measuring of spot temperature tends to use intelligent thermometer of the digital display instead of the past scale thermometer and indicator thermometer, and the requirement to the precision of measurement is higher and higher. At present, although there are high-precision temperature measuring apparatus on the market, no matter it is domestic or prodμCed abroad, the price is generally high.With the information technology being more and more popular in the society, the traditional 8-bit MCU can't content the request of the application that is becoming more and more complex. The friendly interactive interface, the function of network mutual connections, intelligent software and high efficient data processing nearly has become the common demand for the intelligent system. With the rapid development of the embedded system, this system has replaced the traditional PC-centered one step by step, and it will be the main force in the future intelligent meters. The characteristic of the embedded system is mini-type, special used, portable, high reliable so it is widely applied in all kinds of fields, for example, in industry process control, long-distance monitoring, intelligent instrument meter, Robert controller, digital control system, etc. This requires high quality of the traditional control system based on the micro-controller.In this paper, the main content is the develop process of the embedded temperature monitoring instrument based on the 32-bit ARM microprocessor—LPC2292 and embedded real-time operation system μC/OS-II. And also we expatiate this system's material technology and the technology's corresponding realization methods. We combine the high quality, low power consumption 32-bit RISC strμCtured ARM'S kernel processor with the embedded Multiplan operation system μC/OS-II whose kernel source node is open to build up the hardware plate which consist of microprocessor LPC2292,flash, SARM, A/D, keyboard, and display. Embed real-time operation system μC/OS-II to this hardware plate, and combine the software plate ADS for ARM, so as to finish the design and thedevelopment of the embedded temperature monitoring instrument.