| With the internationalization of market and the development of grease produce industry in china, grease produce becomes the important part in people's lives.But the traditional hardware device can't meet the demand of the production; the development of the embedded control technology promotes the grease produce to turn to regularization. The ARM processor with the high—speed disposal,the high integration of hardware and more exploitation resources, becomes the first choose in modern MCU. Taking to control the pressure,the temperature,the material lever as a aim , which are from the step of material entering in the industry grease produce, the article researches the following facets:Bases the requirement of the material entering step in the industry grease produce, the article adopts to choose the LPC2220 chip as the hardware control kernel, and theμClinux operator system as the software exploitation plat of the embedded control system. And then found on introducing the character and the system structural of the LPC2220 chip , it designs its power reset circuit,the memory expand circuit,touch_screen control circuit,LCD interface circuit,the serial communication circuit,the adjust circuit of simulation input passage and the enlarge of output passage. At the same time, the hardware circuit exploitation should consider the familiar degree of the software exploitation, which is the most important to reduce the exploitation cycle.During the software design,μCLinux operator system was transplantd in the system based on the requirement of real-time system, adopting the way of interrupt to overcomeμClinux weakness of real-time nature describes theμCLinux of the leader load technology and the kernel structure, base on this, it realizes the transplant and reduces between boards. Thirdly, it analyzes the device drive work mechanism, and designs the drives of data collection device. Lastly, based on analyze total structure of the system, it designs the client computer program and analyzes the function module, at the same time, it discusses principium the precept to deal with the real—time of the control system.Under the embedded real—time operator system, it is easy to design the structural of the internet application, enlarge the function, and reduce the exploitation process and cycle greatly of the system. Firstly according to the complex of local environment in the industry grease produce, it deals with the sensor output signals using the means of the arithmetic average filter, designs the filter treating flow chart and the detail realization codes.The biggest point in the article is put the embedded control technology to the material level control system in the grease produce, and transplant theμClinux into it. The study of the system owns the reference and consult function when high embedded system is applied in the industry control area. |
