Based On At89c55 Hotel Room Control System Machine Design

This article mainly introduces a design method of the lower computer of a hotel guest room control management system based on AT89C55, which is cheap and reliable and have more complete functions. This article expatiate on the design of the system from both hardware and software. In relation to hardware, the principle and realization of the sub-systems are particularly introduced; In relation to software, the design method which is based on embedded operating system UCOS-II is particularly introduced, and the method of moving UCOS-II to KEIL C is described in detail.This design realizes an intelligent hotel guest room management system. The upper computer of the system can take real-time monitor on the guest rooms of the hotel. The lower computer can transmit the information of the guest room(including the type of the door card,the guest room temperature,the requests of the customers) in time, thus the upper computer can use the information as control strategies. And, the upper computer can control the corresponding function equipments remotely with data packages. The design of different types of door cards can make the system choose different functions for different customers. The introduction of the embedded real-time operating system UCOS-II in the design make the lower computer respond more quickly to the upper computer. This article only involves the lower computer parts of the design. The main content includes:1. A communication system based on the RS485 bus is designed and the communication protocol between the upper computer and the lower computer is studied and formulated. The communication protocol has standard format and the quantity of data transmission will not put much influence on the running of the lower computer.2. A reliable,convenient and cheap door-card-reading and electricity-supplying system based on reflecting infrared light sensor is designed. Some types of corresponding door cards are also designed. Such design can not only guarantee the safety of the hotel guest room, but also reduce the design cost greatly compared to other designs.