In information-based agriculture, we often need to obtain information on environmental temperature, humidity, light intensity, gas concentration, etc. How to effectively obtain this information is a key issue in achieving smart agriculture, and sensor technology provides technical support to solve this problem. In the field of modern science and technology, all kinds of material information about nature need to be collected through the sensor, and then feedback to the computer system, if the computer is compared to the brain, then the sensor is equivalent to the computer, automation equipment, intelligent robot "sense organs", used to obtain a variety of information from the outside world, for computer for analysis and processing.

Sensors in modern science and technology, industrial automation, the development of modern agriculture to play a fundamental and pillar role in measuring the level of development of science and technology and national economy, one of the signs.

Application of sensor technology in agricultural Internet of Things In recent years, with the rapid development of wireless communication technology and embedded technology, smart agriculture and precision agriculture have become the current research hotspots in agricultural applications.

Broadly speaking, agricultural Internet of Things is a network that closely unites people, crops, environment and production tools to grow, manage and track agricultural products from crop growth, harvesting, transportation, storage and sales; narrowly speaking, agricultural Internet of Things refers to the fine management of crop growth process through the wireless sensor network distributed with the field.

With the development of modern agriculture, agriculture sensors in weather forecasting, disaster prevention and mitigation needs, agricultural mechanization equipment, agricultural processing and storage has been more and more widely used, but still need to develop new low-power, low-cost, high stability of the sensor components. With the development of embedded technology, information technology, the application of new nanomaterials in integrated circuits, sensors tend to be intelligent, integrated, miniaturized direction of development, the future development and application of more new sensors, will bring greater changes in agricultural production.