下载后可任意编辑基于 I2C 总线的远程数据采集系统摘 要 针对远距离多点数据的采集，节约微处理器的输入输出引脚，满足多器件控制的要求，设计一套基于 I2C 总线的远程数据采集系统。本系统以带有 I2C 接口的 LPC900 系列单片机作为主控 MCU，来实现数据的处理；以 P82B96 驱动器提高 I2C 总线的负载能力，提高传输距离从而实现数据的远程传输；以带有 I2C 接口的 A/D 转换器 PCF8591来采集数据并进行数据类型的转换；以温度传感器 AD590 来测量环境温度；以 LED 驱动器 ZLG7290 驱动数码管显示数据。通过不断的调试和完善实现多点的温度测量，在数码管上显示即时温度。 本系统采纳 LPC922 单片机为主控制器，通过 I2C 总线实现远距离的温度测量。本系统分为以下几个模块：微处理器核心模块、LED 显示模块、键盘模块、温度测量模块、数据远距离传输模块、电源模块。关键词：单片机，I2C 总线，远程数据采集 I2C Bus-based Remote Data Acquisition SystemABSTRACT For long-distance multi-point data collection, to save the input and output pins of the microprocessor, to meet the requirementsthe control of multiple devices, design a set of I2C bus based remote data acquisition system. The system interfaces with LPC900 MCU I2C as a master MCU, to achieve data processing; to P82B96 I2C bus drive to improve load capacity and improve transmission range in order to achieve the remote transmission of data; to I2C interface with A /D PCF8591 converter to capture data and perform data type conversions; to AD590 temperature sensor to measure ambient temperature; to drive ZLG7290 LED digital display driver data. Debug and improve through continuous multi-point temperature measurement, digital display in real-time temperature. This system uses the LPC922 microcontroller-based controller, through the I2C bus for remote temperature measurements. The system is divided into the following modules: microprocessor core module, LED display module, keyboard module, temperat...
