Engineering Development Of Lubricating Fuel Tank Control System

This paper develops a new control system of the lubricating fuel tank based on PIC16F877 single-chip computer.Control system can be called discrete electrical elements control system which is only composed of some discrete electrical elements, or can be called single-chip computer control system which is composed of a single-chip computer and other discrete electrical elements. Because of the disadvantages of its technical means, maintenance costs, large power consumption of self-control devices, discrete semiconductor devices control system can not adjust to the requests of product development, moreover, SCM technology is quite mature now, and has been widely used in our life. Therefore, using SCM to control the lubricating fuel tank will be the inevitable developing trend of control mode, it will greatly enhance manufacturing grade and technical content, also largely increase the degree of automation. So the topic of this paper has obvious significance.Firstly, this paper makes an instruction of the configuration and development of control system of lubricating. Secondly, it is concerned with a discrete electrical elements control system. The process control principle is discussed. Then, it is concerned with a SCM control system which is composed of a PIC16F877 single-chip computer, a temperature sensor and its interface, a heater driver relay interface, a output valve driver relay interface, a press sensor and its interface, a fuse level sensor and its interface, a HG128643 LCD, a keyboard circuit, an alarming circuit and the others auxiliary circuit. Next, it explains control system software which is composed of main program, keyboard scan program, LCD display program, A/D conversion program, and so on. Finally, it draws some conclusions and directions for future works.