关键词:煤质监测;LPC2138;光电隔离;ADS1.2;VT100
The I/O Unit Design of Fast Quality Monitor for Coal
Abstract
With the development of economic, as the major energy, the coal consumption becomes more and more, so save the coal and improve the utilization ratio of the coal become an urgent task. The analysis of coal must be go through sampling, testing procedures and so on. This process is very detailed and complicated. The analysis of time is too long and the results lagged behind. Therefore this unable to meet the needs of the fast coal quality monitoring.TN-3000 fast quality monitor for coal which is being developed can implement real-time online monitoring.
This design is the I/O unit design of TN-3000 fast quality for coal which completes input and output of signals in the fast quality monitor for coal process. This design is based on 32 bit ARM7-TDMI processor LPC2138. In order to prevent from disturbance, all of the input and output channels are used photoelectric isolation. The outputs adopt delay. Taken into account, the analog signals are to be tested at the scene, so 6-way analog signals input channels are extended in this design. The software design is based on μC/OS-II, programming language is C, and the development environment is ADS1.2.
This program is downloaded through one way RS232 interface and the VT100 terminal is used to debug through this way too. The remote communication is through one way RS485 interface. The design is completed after debugging and testing and works stably.