(3)传感器的发展动向
1)提高微传感器的性能。改善和提高微传感器的性能是今后的主要努力方向之一。
2)微传感器的集成。硅微传感器和微电子系统以及微执行器很可能全部制造在一个芯片上形成单片集成，构成一个闭环系统。
3)阵列化。利用同类传感器阵列，可使原本用单一传感器测量的不可靠的功能装置成为可靠的功能装置。不同类型的微传感器组成阵列，可获得一个功能优良的控制单元，如在发动机中，可把气体压力、温度和湿度传感器制成一个阵列单元，用以控制并得到理想的空气流和空气/燃油比，以实现最佳的燃烧过程。
4)分布式单元和智能结构具有预期的、自我监测功能的构件称为智能结构(或材料)。如把MEMS(微机械电子系统)阵列单元(微传感器+微执行器+专业集成电路)嵌入飞机机翼中，便可连续地对机翼振动、应力和结构完好性等多种状态实施监测和处理。
现场总线在控制领域崭露头角不过是最近几年，然而其来势凶涌，且有愈演愈烈之趋势。那么，究竟什么是现场总线？什么是现场总线控制系统？现场总线控制系统较之目前在工控界仍占主导地位的集散控制系统（DCS）有何特点和优点？在现场总线标准尚未统一之前，能采用吗？若欲采用，40多种现场总线，应选用哪一种？
can be connected to both conventional I/0 and various field bus devices such as Profibus, FF, CAN, and Modbus. system tool
It has a high degree of flexibility and excellent scalability, whether it is the control of small production units, or the control of ultra-large-scale whole plants – integrated control, even
The Industrial” system can handle the application of field equipment maintenance management and cross-plant production management control with ease.
An important member of the Industrial” family, the AC800F system fully embodies the Industrial” (Industrial Information) system pioneered and led by ABB in technology.
information technology) new trends.
The system is divided into two levels: operation management level and process control level. At the operation management level, not only the traditional control system monitoring operation function is realized
function (operation and display, printing, trend display and alarm), and also complete system hardware diagnosis and
