In order to obtain information from the outside world, people must rely on the sense organs. But relying solely on people's own sense organs, their functions in the study of natural phenomena and laws and production activities are far from enough. To accommodate this situation, sensors are needed. Therefore, it can be said that the sensor is an extension of the human five senses, also known as the electric five senses.
With the advent of the new technology revolution, the world has entered the information age. In the process of using information, the first thing to be solved is to obtain accurate and reliable information, and sensors are the main way and means to obtain information in the natural and production fields.
In modern industrial production, especially in the automated production process, various sensors are used to monitor and control various parameters in the production process, so that the equipment can work in a normal or optimal state, and the products can achieve the best quality. Therefore, it can be said that without many excellent sensors, modern production will lose its foundation.
In the research of basic disciplines, sensors have a more prominent position. The development of modern science and technology has entered many new fields: for example, we need to observe the vast universe thousands of light-years in the macroscopic view, the particle world as small as fm needs to be observed in the microscopic view, and the evolution of celestial bodies over hundreds of thousands of years needs to be observed vertically. , an instantaneous response as short as s. In addition, there have also been various extreme technological researches that play an important role in deepening material understanding, developing new energy sources, and new materials, such as ultra-high temperature, ultra-low temperature, ultra-high pressure, ultra-high vacuum, ultra-strong magnetic field, ultra-weak magnetic field and so on. Obviously, it is impossible to obtain a large amount of information that cannot be directly obtained by human senses without suitable sensors. The first obstacle to many basic scientific research lies in the difficulty of obtaining object information, and the emergence of some new mechanisms and high-sensitivity detection sensors often lead to breakthroughs in this field. The development of some sensors is often a pioneer in the development of some marginal disciplines.
Sensors have already penetrated into extremely broad fields such as industrial production, space development, ocean exploration, environmental protection, resource survey, medical diagnosis, bioengineering, and even cultural relics protection. It is no exaggeration to say that from the vast space, to the vast ocean, to various complex engineering systems, almost every modern project is inseparable from a variety of sensors.
It can be seen that the important role of sensor technology in developing the economy and promoting social progress is very obvious. All countries in the world attach great importance to the development of this field. It is believed that in the near future, there will be a leap in sensor technology, reaching a new level commensurate with its importance.
