基于Blackfin DSP的虚拟数字万用表设计与实现

Realization of virtual digital multimeter based on Blackfin DSP

本文设计了基于Blackfin DSP虚拟数字万用表。并且给出了面向对象的PC控制程序,以及基于ADI公司的ADSPBF531芯片的嵌入式操作系统的硬件及软件实现方案。该万用表可以完成对直流电压,交流电压,直流电流,交流电流,电阻等量的测量,并且可以完成数据的存储和万用表巡检(就是万用表按照设定进行自动采集前端信号),还有高速数据采集功能。该设计能够满足客户目前及未来测试需求的多用途解决方案。实现结果表明该设计方案合理、可靠,并具有十分方便的用户可操作性。

A Virtual Digital Multimeter based on Blackfin DSP is presented, for which object oriented PC controlling programming as well as software ＆ hardware solution of the embedded operating system based on ADI product ADSPBF531 chip is also given. The Virtual Digital Multimeter can measure DCV, ACV, DCI, ACI and resistance value and has the functions of SCAN（Virtual Digital Multimeter can do measurement automatically by the scheme which planed early） and the high speed storage. This Virtual Digital Multimeter be capable of satisfying the need of multi-purpose solution now and future test requirement. Results show that the system is reasonable and reliable and of convenient maneuverability for users.