Design For Control System Of Dot-Matrix Printer

With the development of computer, the operating processing speed of office equipment is faster than before. As widely used in private industry, the performance of stylus printer can not meet the needs of the users. Over the past stylus printer print slow, has noisy and power efficiency is not high. The printer manufacturers have to re-design and development it in order to meet today's market demand for stylus printer performance, which has high printing speed, low printing noise and high power efficiency. By analyzing information of the social needs, this paper carried out a system design for the stylus printer.The development of stylus printer at home and abroad are analyzed. This paper proposes design and solution way to meet specific customer requirements. The system is divided into software modules and hardware circuit module. This paper develops a new software upgrade system based on IAR software platform, which helps improving product performance and expanding the hardware capabilities. Hardware module includes detection circuit module, driver module and power supply module AT91SAM7SE32 producing by ATMEL and ALTERA programmable logic chip MAXII (EPM3128A) are composed of the development platform for detection circuit module and the driver module. The detection module completed a print head temperature, the word car location, out of paper, paper feed tilt and detection. Drive and control modules completed a print head driver circuit design and stepper motor drive design, which uses current segmentation-driven stepping motor program. Power Modules are available in small, lightweight, high reliability, low power, low noise and anti-jamming, and many other advantages of switching power supply. The switching power supply using FA5304AP as switch controller, which complete switching power supply control circuit, detection circuit and filter circuit designAll parts involved in this paper have been used in the actual products, and satisfied the market requirements through testing and debugging. This product has been accepted by customers since it entered the market in July.