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In today's society with the rapid development of economy, people more and more high to the requirement of life level, under this big trend of the automatic door is becoming more and more widely applied, it can be seen in many modern buildings, such as Banks, hotels, supermarkets, etc. Automatic door at home and abroad, now development is very uneven, foreign products performance is good, but less of the price is more expensive, and domestic product even though the price is cheaper but with poor performance, easy to out of order. So in this article designed a high cost performance of the automatic door control system, and its powerful functions, moderate price, there will be strong competitiveness in the market. This paper gives the hardware and software of the automatic door control system complete solution. In hardware aspect, the MOTOROLA's high-performance 8-bit microcontroller MC68HC11K1 as system CPU, the microcontroller is cheap, but powerful, widely used in industrial control field. In addition, using complex programmable logic device (CPLD) to the temporal distribution of stepping motor control signal, reduces the cost, reduce the volume of the system, increased the development flexibility. In terms of the security of the system, design the perfect self-protection and fault detection circuit, ensure the system safe and reliable operation.
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