Hoto

Industrial Automation Instruments In recent years, with the popularization and application of microelectronics technology and computers, industrial automation instruments use a large number of advanced manufacturing processes in the manufacturing process, such as new special chips, chip components, etc., and adopt advanced control technology in technology. Such as dual backup of the main control system, fast communication network and open compatible system, etc., improve the reliability and life of the automatic control system and instrument, expand the function, speed up the update, and update one system almost every two years.

In the future, the development of automatic control systems and meters will undergo major changes in the following three aspects.

(1) Integration of system functions: Closer integration with computers, power electronics and high-power control, continuous control and intermittent control.

(2) The new fieldbus structure appears, the self-diagnosis function of the instrument is expanded, and the maintenance is convenient. The connection of the system is more reliable and simple, so the installation cost is greatly reduced, and the control scale is variable.

(3) Enable the new intelligent module. New sensors such as fiber optic sensors, polymer sensors and biosensors are constantly emerging and will be developed rapidly.

The transmitter adopts high-performance microprocessor and communication technology to realize digitalization, communication and intelligence, improve accuracy and range ratio, and has temperature and pressure compensation, realize self-diagnosis, remote configuration, remote adjustment of zero position, measurement Range and PID control set points, and the application of dot matrix light column display technology, display measured variables and set values.

The instrumentation continues to adopt new sensing technology and microelectronic technology to develop digital, intelligent, high-precision, special media, special environment, measurement of limit parameters and non-contact measurement, and long life. With the development of intermittent process control, online detection of various types of mechanical quantities, state quantities, chemical composition and other new types of detection instruments will have new developments. Actuators, especially regulating valves, will develop to high temperature, high pressure, high differential pressure, rapid cut-off (opening), corrosion resistance, wear resistance, large diameter, high power and high precision to meet the needs of special working conditions.

In order to meet the needs of the development of all-digital control systems, actuators will accelerate the process of digitization and intelligence. The development of application software, new control technology, artificial intelligence technology (mainly including fuzzy control, expert system and neural network), especially the application of expert system in automatic control system, will be further developed. In the future, the commercial profits of automatic control systems and meters will mainly come from software. With the development of factory automation systems, mechatronics, electronic (electronic computer, electronic instrumentation, electrical equipment) integration (CIE), power electronics technology and products will continue to develop and widely used.

Scientific testing instruments With the development of new and high technologies, the testing industry is facing new challenges, especially in many research tasks in the fields of modern aviation, aerospace, underwater research, bioengineering, new energy, new materials and information technology. It is often impossible to complete. Therefore, since the 1970s, measurement work has been carried out with the aid of a computer. With the help of a microprocessor, an instrument can be added to the knowledge processing layer in addition to the physical layer and the data processing layer. Therefore, it can automatically correct the zero point, automatically compensate the temperature drift, improve the measurement accuracy, draw the ideal test results, and promote the technical level of the test instrument to a new level.