Wireless sensor networks are maturing and have broad application prospects in the industrial field

With the continuous maturity of industrial wireless sensor network technology and the continuous improvement of market demand, the effect of industrial wireless sensor network products on the replacement of traditional industrial sensors has been continuously improved.
　　 In 2015, my country's industrial wireless sensor network products accounted for about 4.9% of the industrial sensor market, with a scale of 780 million yuan. By 2020, my country's industrial wireless sensor network products will account for 11.7% of the industrial sensor market, and the market size is expected to reach 3.6 billion yuan, with a compound annual growth rate of as high as 35.8%. The market prospect is broad.
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  working principle
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The component modules of the wireless sensor are encapsulated in a shell. When it is working, it will be powered by a battery or a vibration generator to form a wireless sensor network node. It consists of randomly distributed micro nodes integrated with sensors, data processing units and communication modules. The way of organization constitutes a network.
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　　 It can collect the digital signal of the device and transmit it to the wireless gateway of the monitoring center through the wireless sensor network, and send it directly to the computer for analysis and processing. If necessary, the wireless sensor can also transmit the entire time history signal collected in real time. The monitoring center can also wirelessly transmit information such as control and parameter settings to the nodes through the gateway. The data conditioning, acquisition and processing module amplifies and filters the weak signal output by the sensor, then sends it to the analog-to-digital converter, converts it into a digital signal, and sends it to the main processor for digital signal processing to calculate the effective value and displacement of the sensor. Value etc.
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　　 three advantages
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　　 With the development and maturity of wireless sensor network technology, wireless sensor network products have begun to gradually replace traditional wired sensor products with their own unique advantages, and have penetrated into all aspects of the industrial field, becoming an emerging hot spot in the market. Compared with traditional wired sensors, wireless sensors exist, and their advantages are mainly reflected in the following aspects:
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　　 Higher flexibility. It is suitable for situations with mobile requirements but inconvenient wiring, such as cranes, mobile bottling equipment, transportation industry, automatic guided vehicle systems and monorail conveyors.
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　　Higher reliability. The wireless sensor can avoid the damage caused by movement, such as the bending of the wire caused by the long drag chain, the twisting and breaking of the cable caused by the rotating movement, and so on. At the same time, the fault factor caused by the connector in the wired network is eliminated.
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　　Higher security. With the development of technology and the continuous emergence of new threats, the ability to upgrade security maintenance is essential. The new encryption strategy and covert data transmission indicate that wireless security levels will exceed wired systems. In addition, in some dangerous extreme environments, such as blasting occasions where wiring is inconvenient, wireless sensors can ensure the safety of personnel.
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　　Application area
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　　 The advantages of wireless sensor network make it have a wide range of market applications, almost involving all areas of social and economic activities.
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　　 One is the field of pipeline and trench monitoring, such as the monitoring of temperature, pressure, and flow parameters of pipelines such as water supply and drainage, heating, gas supply, and oil supply. The second is the field of warehouse monitoring, such as the monitoring of temperature and humidity, temperature, flammable and explosive gases, and toxic and harmful gases in grain warehouses, drug warehouses, food warehouses, and factory hazardous chemical warehouses. The third is the monitoring field of manhole covers and fire hydrants, such as the monitoring of the operation status of urban manhole covers and fire hydrants. The fourth is the field of liquid level and water level monitoring, such as the parameter monitoring of water level and liquid level in rivers, dams, reservoirs, and oil tanks. Fifth is the field of greenhouse monitoring, such as the monitoring of temperature, humidity, light, gas...parameters such as vegetables, flowers, breeding (chicken, duck, pig house, etc.). Sixth is the field of aquaculture monitoring, such as the monitoring of water quality and gas parameters such as fish ponds and cages. Seven is the field of atmospheric environmental monitoring, such as the monitoring of toxic and hazardous gases in public places such as parks, schools, and communities. In addition to the above 7 main application areas, there are other applications, such as military, scientific research and so on.
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　　 One of the key technologies in the Internet of Things is sensor technology. The wireless sensor network plays a pivotal role in the application process of the industrial Internet of Things. It is responsible for connecting independent sensor units through a wireless network, and collecting the data collected by each sensor, so as to realize the physical or environmental conditions in the scattered range of the space. Collaborative monitoring, and then perform corresponding analysis and processing based on this information. Nowadays, modern industrial production is developing in the direction of large-scale, rapid and low-consumption. The wireless sensor network will play a special role in the future intelligent production of enterprises by virtue of its advantages of flexibility, safety, reliability, convenience and low cost.