基于单片机的电流电压测量系统设计(论文14000字)
摘 要
本设计是以单片机为核心的控制模块,进行电压电流测量的设计。此系统的控制模块为单片机模块,所测量的一般是模拟量,故此系统必定还涉及到A/D模数转换模块。作为电压和电流测量系统,就必须包含量程自动转换模块,为了能够读出测量值就必须具备显示模块和通信模块。本系统采用SST89E58RD芯片作为核心控制芯片。电压电流的计数处理通过软件的编写来实现。本系统采用ADC0809芯片进行系统需求的模数转换。量程自动转换模块的主要功能是实现电压的衰减和8个档位的自动转换。显示模块是用LED数码管进行显示的,考虑到电流电压值的大小,本设计采用四个数码管。通信模块的主要功能是将数据传输到电脑,查阅相关资料得知,MAX232芯片能够满足相关的需求。
关键词:单片机 电流测量 电压测量
MCU-based design of current and voltage measurement system
Abstract
The design is based micro-controller as the core control module, the design of voltage and current measurements. Analog control module is typically the system module for a micro-controller, the measurement system must therefore also relates to the A / D conversion module. As the voltage and current measurement system must include automatic range conversion module, in order to be able to read out the measurements must have a display module and communication module. The system uses SST89E58RD chip as the core control chip Counting voltage and current handling by writing software to achieve. The system uses a digital-analog chip ADC0809 conversion system requirements. Automatic conversion range is the main function modules automatically convert the voltage attenuation and eight stalls. Display module with LED digital display, considering the size of the current and voltage values,the design uses four digital tube. The main function of the communication module is to transfer data to a computer, access to relevant information that, MAX232 chip can meet the relevant requirements.