说明：  基于HART协议的智能变送器设计 从HART协议智能变磅器的功能和协议要求出发，在详细讨论、分析HART协议智能变送器的设计重点、难点和技术关键的基础上，设计完整的HART协议智能压力/差压变送器的实用电路。它可以实现HART协议智能变送器的基本功
(Based on HART Protocol Intelligent Transmitter Variable pounds from the HART protocol smart device capabilities and agreement calls for proceeding discussed in detail, analyzing the design of Intelligent Transmitter HART protocol key, difficult, and key technology, based on the design of a complete HART Protocol of the Smart pressure/differential pressure transmitter of the practical circuit. It can achieve the basic skills of smart transmitter HART protocol)