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With the arrival of the new technology revolution, the world has begun to enter the information age. In the process of using information, the first thing to solve is to obtain accurate and reliable information, and sensors are the main means and means for acquiring information in the natural and production fields. We often hear the word sensor, it seems to exist with us all aspects, then what is a sensor? What is the function of the sensor? China Environmental Protection Online opens the answer for you.
The expert told the China Environmental Protection Online Network reporter that the sensor (English name: transducer/sensor) is a detection device that can sense the measured information and can transform the information it feels into electrical signals or other devices according to certain laws. Formal information output is required to meet the requirements for information transmission, processing, storage, display, recording, and control. It is the first link to achieve automatic detection and automatic control.
The Chinese environmental protection online reporter investigated the national standard GB7665-87 to define the sensor as follows: “A device or device that can sense a specified part to be measured and convert it into a usable signal according to a certain law (mathematical function rule), usually from sensitive components and Conversion element composition."
In order to obtain information from the outside world, people must rely on sensory organs. And relying solely on people’s own sensory organs, their function in the study of natural phenomena and laws and production activities is far from enough. To meet this situation, sensors are needed. Therefore, it can be said that the sensor is an extension of human features, also known as electrical features.
The expert told the China Environmental Protection Online reporter that the sensor has a more prominent position in the research of basic disciplines. The development of modern science and technology has entered many new fields: for example, macroscopic observations of the vast universe of thousands of light years, microcosmic observations of particle worlds as small as fm, and longitudinal observation of the evolution of celestial bodies for hundreds of thousands of years Short response to s. In addition, there have also emerged various kinds of extreme technological researches that have an important role in deepening the understanding of materials, exploiting new energy, and new materials, such as ultra-high temperature, ultra-low temperature, ultra-high pressure, ultra-high vacuum, super magnetic field, and ultra-weak magnetic field. Obviously, to get a lot of information that human senses cannot directly obtain, there is no suitable sensor. Obstacles to many basic scientific researches are the difficulty in obtaining object information. The emergence of some new mechanisms and high-sensitivity detection sensors will often lead to breakthroughs in this field. The development of some sensors is often a pioneer in the development of some marginal disciplines.
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Sensors have already penetrated into an extremely wide range of fields such as industrial production, space development, ocean exploration, environmental protection, resource investigation, medical diagnosis, biological engineering, and even cultural heritage protection. It is no exaggeration to say that from the vastness of space, to the vast oceans, to a variety of complex engineering systems, almost every modern project can not be separated from a variety of sensors. The expert told the China Environmental Protection Online Network reporter 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, sensor technology will take a leap forward and reach a new level commensurate with its important position.
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The main application and function of the sensor
The main application and function of the sensor: