Nowadays, many things are moving towards intelligent development. Smart meters, smart phones, and some sensors are also smart. Now they have been developed into pressure, vibration, flow, temperature and humidity measurements, and are particularly advanced. Freon Solvent Recovery Machine is a special equipment made for organic solvent recycling. It has a tilting-type air-cooled condensing system, quality build, and is manufactured according to Chinese explosion-proof directive (CNEX) and European directive (ATEX). The organic solvents are recycled through distillation and cooling. Freon Solvent Recovery Machine Freon Solvent Recovery Machine, Freon Solvent Recovery System, Freon Solvent Recovery Unit SHENZHEN KUANBAO ENVIRONMENTAL EQUIPMENT CO., LTD , http://www.calstarkb.com
The research and development of smart pressure sensors in China mainly focused on professional research institutes and universities. It began in the mid-1980s. In the late 1980s, China National Defense University, Beijing University of Aeronautics and Astronautics, Zhejiang University and other universities and colleges successively reported research results. In the early 1990s, several domestic research institutes developed the use of hybrid integration technology to successfully develop a practical and intelligent pressure sensor, marking the research of smart sensors in China has entered the international ranks, but compared with foreign advanced technology, we have more Big gap. Mainly in: 1, advanced calculation, simulation and design methods, 2, advanced micro-machining technology and equipment, 3, advanced packaging technology in equipment, 4, reliability technology research and other aspects. Therefore, strengthening the research of technology and introducing advanced equipment to improve the overall level is our future direction.
At present, the international sensor field has formed a basic consensus on smart pressure sensors. From its function, the intelligent pressure sensor has developed into one or more sensitive functions and can complete signal detection, conversion processing, logic judgment, function calculation, two-way communication, and internal self-test, self-calibration, self-compensation, self- Diagnostics, devices with some or all of the above features.
From the use point of view, the accuracy, stability, and reliability of smart pressure sensors are crucial. For a long time, most of the research work has focused on the development of hardware, although people are constantly using new materials to develop sensitive devices, improving the manufacturing process of pressure sensor chips to improve the quality of the chips and improving the linearity and stability of the sensors through external circuit compensation methods. The output drifts but there is no fundamental breakthrough.
Current smart pressure sensor systems are digital in nature, but their communication regulations still use standard analog signals of 4 to 20 mA. International standardization institutes are developing digital standards for international specifications. The HART protocol was adopted in the current transition phase. This is an intelligent pressure sensor communication protocol that is compatible with existing 4-20mA systems. Analog and digital can communicate simultaneously. This makes the products of different manufacturers universal.
In the coming years, the development of smart pressure sensors will expand to more fields, and it can be predicted that more and more smart pressure sensors will play an important role in our national economy.