【作者】 彭俊；

【导师】 许维胜；

【作者基本信息】 同济大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 温度是生活中最基本的环境参数。温度的监测与控制，对于生物生存生长，工业生产发展都有着非同一般的意义。温度传感器的应用涉及机械制造、工业过程控制、汽车电子产品、消费电子产品和专用设备等各个领域。传统的常用温度传感器有热电偶、电阻温度计RTD和NTC热敏电阻等。但信号调理，模数转换及恒温器等功能全都会增加成本。现代集成温度传感器通常包含这些功能，并以其低廉的价格迅速地占据了市场。Dallas Semiconductor公司推出的数字式温度传感器DS1820采用数字化一线总线技术具有许多优异特性。其一，它将控制线、地址线、数据线合为一根导线，允许在同一根导线上挂接多个控制对象，形成多点一线总线测控系统。布线施工方便，成本低廉。其二，线路上传送的是数字信号，所受干扰和损耗小，性能好。本课题旨在分析和设计基于数字化一线总线技术的温度测控系统。本系统采用FPGA实现一个温度采集控制器，用于传感器和上位机的连接，并采用Microsoft公司的Visum C++作为开发平台，运用MSComm控件进行串口通信，进行命令的发送和接收。更多还原

【Abstract】 Temperature is one of the most essential parameters in our life. The monitorand control of the temperature have phenomenal importance to the growth ofcreatures and Industries. The temperature sensors apply to all kinds of field likemechanic manufacture, process control, automobile electrics, electronic consumergoods and other special facilities. Traditional temperature sensors includethermocouples, resistance temperature detectors, negative temperature coefficientThermistors, etc. However, peripheries such as signal modulation, A/D conversion,thermostat adds to the cost. Modern integrated temperature sensors including all thesefunctions occupy the market quickly. Digital temperature sensors DS1820 promotedby Dallas Semiconductor Company has its distinguishing characteristics due to its thedigitalized one-wire technology. First of all, it merges the control line, address lineand data line into one wire, allowing muli-drop on one same wire to form amultipoint temperature control system. Secondly, digital signals transmit on the businstead of analog ones to insure small derogation and less distribution. This projectaims at the design and analysis of a temperature acquisiton and control system basedon the digitalized one-wire technology.更多还原