The essence of the Internet of things is data, and the sensor is the big data "excavator", which is a very important device. Sensors transform the signals from the physical world into digital signals, which have a wide range of categories, from traditional air pressure, CIS images, microphones to motion sensors.

The Internet of things has the characteristics of fragmentation, diversification, cross domain, cross platform and timeliness. However, the "fragmentation" feature of Internet of things applications is weakening, and there are some single application products whose market demand exceeds tens of millions of sets per year, such as smart speaker, anti loss device, dash cam, etc., which makes it necessary and possible to define special chips to achieve better integration and cost performance.

At the same time, in the past period of time, the common application of industrial and agricultural equipment and sensor modules in the system increased interoperability, making it a kind of terminal node in the Internet of things.

5g standard supports the application of Internet of things / Internet of vehicles, overcomes the limitations of Bluetooth, ble, ZigBee, Lora / sigfox and other wireless interconnection standards, and provides a platform basis for the popularization of Internet of things terminals.

In terms of the evolution trend of sensor products,

The first stage is mainly in the industrial field, the market consumption is small, the unit price is high, the yield is low, and the performance is the main pursuit.

The second stage is mainly in the consumer category, with a sharp increase in market consumption. The MEMS sensor has entered the stage of large-scale industrialization, and the price has dropped significantly to meet the basic functions.

The third stage is mainly in the quasi industry, which puts forward more requirements on the function and performance of products, and the product line has more updated products based on performance upgrading.

The fourth stage focuses on the Internet of things market. The rapid growth of the Internet of things application market makes the function and use of sensors. Taking data collection and effective use as the consideration point, the connectivity function of sensor nodes is becoming more and more common.