纠检错算法的研究以及通讯软件的开发.doc
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纠检错算法的研究以及通讯软件的开发,全文29页约15500字论述翔实摘要空调系统的远程控制是一门新兴技术，分布式空调自动控制系统已被广泛应用于联通和移动等通信行业的机房。本设计可以实现对分布式空调系统投入机组的数量及各台空调机的温度的远程控制。本设计采用at89c55单片机作为空调自动控制系统温度检测和控制核心，实现外部...
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纠检错算法的研究以及通讯软件的开发
全文29页 约15500字 论述翔实
摘 要
空调系统的远程控制是一门新兴技术，分布式空调自动控制系统已被广泛应用于联通和移动等通信行业的机房。本设计可以实现对分布式空调系统投入机组 的数量及各台空调机的温度的远程控制。
本设计采用AT89C55单片机作为空调自动控制系统温度检测和控制核心，实现外部温度的采集、显示、温度的设定以及对执行部件的控制。温度传感器采用稳定性较好，灵敏度较高的铂电阻；采集到的模拟信号经运算放大器AD620放大后，由ADC0809完成模数转换，将转换后的数据送入单片机；同时通过通用键盘显示接口芯片8279完成显示和参数的设定；上、下位机通信部分由SN75176B芯片完成，采用差分、RS-485半双工传输方式，其中，RS-485通信协议规范可以使传输距离最远可达1200米，实现了远程控制的要求；采用看门狗电路防止程序“跑飞”或进入“死循环”，实现系统稳定运行；采用继电器完成对各空调机的选通。
关键词：AT89C55，差分传输，RS-485，半双工传输方式，看门狗电路
ABSTRACT
The remote-control air-conditioning system is a new technology, the distributed air-conditioning automatic control system has been widely used in the machine room of the communication industry,such as China mobile and China Unicom. The design will achieve the remote-control of the number of the air conditioners that put into use and the temperature of every air conditioner.
This design use microcontrollers AT89C55 as the core of the control and the temperature examination of the air condition auto control system,It will carry out the collection,the show,the enactment of the temperature and the control of the carrying out aparts of the exterior temperature. Platinum resistance which has better stability,and higher sensitivity will be used as an temperature sensor ; The analog signal is enlarged by processing amplifier AD620 ,and then the ADC0809 end of the Analog-to-Digital conversion, so the data was send into the microcontrollers;The general keyboard interface chip 8279 complete the display and the setting of parameter in the meantime. The chip SN75176 complete the correspondence of the above and underneath machine using Differential Transmission and rs-485 Half-Duplex Transmission. The RS-485 protocol specification make the transmission distance up to 1200 metres which achieve the requirements of the remote-control; The Watchdog keep the program off the die circulation,so the system will run correctly.The relays are used to complete the choice of the air conditioners.
Key words：AT89C55; Differential Transmission; RS-485;Half-Duplex Transmission;
watchdog
AT89C55，差分传输，RS-485，半双工传输方式，看门狗电路
部分参考文献
[10] 郁有文，常健，程继红. 传感器原理及应用. 第2版. 西安：西安电子科技大学出，2003
[11] 曹茂永，王霞，孙农亮.《仪用放大器AD620及其应用》，《电测与仪表》[J].2000年第10期，49－52页
[12] 8-bit Microcontroller with 20K Bytes Flash AT89C55WD .Atmel Corporation 2002. Atmel公司数据手册，2002
[13] Low-Cost, μP Supervisory Circuits . Maxim Integrated Products Printed USA. Maxim 公司数据手册，1995
[14] SN65176B, SN75176B DIFFERENTIAL BUS TRANSCEIVERS. Texas Instruments公司数据手册，2003
全文29页 约15500字 论述翔实
摘 要
空调系统的远程控制是一门新兴技术，分布式空调自动控制系统已被广泛应用于联通和移动等通信行业的机房。本设计可以实现对分布式空调系统投入机组 的数量及各台空调机的温度的远程控制。
本设计采用AT89C55单片机作为空调自动控制系统温度检测和控制核心，实现外部温度的采集、显示、温度的设定以及对执行部件的控制。温度传感器采用稳定性较好，灵敏度较高的铂电阻；采集到的模拟信号经运算放大器AD620放大后，由ADC0809完成模数转换，将转换后的数据送入单片机；同时通过通用键盘显示接口芯片8279完成显示和参数的设定；上、下位机通信部分由SN75176B芯片完成，采用差分、RS-485半双工传输方式，其中，RS-485通信协议规范可以使传输距离最远可达1200米，实现了远程控制的要求；采用看门狗电路防止程序“跑飞”或进入“死循环”，实现系统稳定运行；采用继电器完成对各空调机的选通。
关键词：AT89C55，差分传输，RS-485，半双工传输方式，看门狗电路
ABSTRACT
The remote-control air-conditioning system is a new technology, the distributed air-conditioning automatic control system has been widely used in the machine room of the communication industry,such as China mobile and China Unicom. The design will achieve the remote-control of the number of the air conditioners that put into use and the temperature of every air conditioner.
This design use microcontrollers AT89C55 as the core of the control and the temperature examination of the air condition auto control system,It will carry out the collection,the show,the enactment of the temperature and the control of the carrying out aparts of the exterior temperature. Platinum resistance which has better stability,and higher sensitivity will be used as an temperature sensor ; The analog signal is enlarged by processing amplifier AD620 ,and then the ADC0809 end of the Analog-to-Digital conversion, so the data was send into the microcontrollers;The general keyboard interface chip 8279 complete the display and the setting of parameter in the meantime. The chip SN75176 complete the correspondence of the above and underneath machine using Differential Transmission and rs-485 Half-Duplex Transmission. The RS-485 protocol specification make the transmission distance up to 1200 metres which achieve the requirements of the remote-control; The Watchdog keep the program off the die circulation,so the system will run correctly.The relays are used to complete the choice of the air conditioners.
Key words：AT89C55; Differential Transmission; RS-485;Half-Duplex Transmission;
watchdog
AT89C55，差分传输，RS-485，半双工传输方式，看门狗电路
部分参考文献
[10] 郁有文，常健，程继红. 传感器原理及应用. 第2版. 西安：西安电子科技大学出，2003
[11] 曹茂永，王霞，孙农亮.《仪用放大器AD620及其应用》，《电测与仪表》[J].2000年第10期，49－52页
[12] 8-bit Microcontroller with 20K Bytes Flash AT89C55WD .Atmel Corporation 2002. Atmel公司数据手册，2002
[13] Low-Cost, μP Supervisory Circuits . Maxim Integrated Products Printed USA. Maxim 公司数据手册，1995
[14] SN65176B, SN75176B DIFFERENTIAL BUS TRANSCEIVERS. Texas Instruments公司数据手册，2003
