On November 1, the 2021 World Sensor Conference opened in Zhengzhou. With the theme of "Sensing the World and Creating the Future", this conference invited representatives of global sensor organizations, experts and scholars and well-known enterprises to talk about the development trend of sensor technology and exchange the latest achievements. Photographed by Wang Zheng, a reporter of this newspaper
□ Chen Hui, a reporter from Henan Daily
The air purifier has a built-in PM2.5 dust sensor, the temperature gun is inseparable from the infrared sensor, and the kitchen gas leak alarm is installed with a gas sensor... In the information age, sensors are everywhere. It is the eye of the Internet of Everything, the window of information input, the Internet of Things, big data, cloud computing, artificial intelligence and even various technological realizations in smart cities, all of which are inseparable from sensors.
On the afternoon of November 1, the 2021 World Sensor Conference New Product Release and Production and Marketing Docking Meeting, the backbone enterprises of intelligent sensors in the province, Hanwei Technology, China Electronics Information, Hitachi, Xintian Technology, Xinrui Technology, etc. carried out new product releases and advantageous product promotions, and various sensors were like a magic key, opening up a new digital space.
Since the beginning of this year, there have been a number of kitchen gas leakage and explosion incidents across the country, so that consumers pay special attention to the safety of gas use, and the "Safety Production Law" implemented on September 1 also imposes mandatory provisions on the installation of combustible gas alarms in catering and other industries.
"Combustible gas detectors are Hanwei's dominant products, we produce industrial and commercial combustible gas detectors, household combustible gas detectors, portable combustible gas detectors and other types." Hanwei technology technicians introduced, taking the household type as an example, a small detector is installed in the kitchen, once the natural gas leakage concentration reaches the set value, it will automatically cut off the gas and trigger the sound and light alarm.
At the turn of autumn and winter, air pollution is more likely to occur. At present, the air automatic monitoring micro-station used in the air pollution grid supervision system uses multi-sensor information fusion technology. By installing PM2.5, PM10, SO2, NO2, CO, O3 and other gas environment monitoring sensors in the meteorological monitoring station, comprehensive and real-time monitoring of the atmospheric microenvironment is realized. The highway traffic meteorological observation station developed by Kaimai (Luoyang) Ring Measurement Co., Ltd. can automatically observe meteorological elements such as visibility, road surface conditions, atmospheric temperature, relative humidity, wind speed, wind direction, rainfall, road surface temperature, roadbed temperature, and wet slip coefficient along the highway.
Soil water is an important part of water resources. For a long time, how to accurately measure soil moisture content has always been the focus of research in related disciplines, and there are dozens of soil moisture determination methods proposed by researchers at home and abroad. China Electronics Information Industry Co., Ltd. introduced a kind of "black technology" at the docking meeting - the automatic soil moisture observer in the cosmic ray area, using a detector erected above the surface to measure the intensity of cosmic rays fast neutrons, reverse the performance of soil moisture content, can achieve the monitoring of surface soil moisture in the surrounding 100-meter area, fill the scale gap between traditional point measurement and remote sensing large-scale monitoring, satellite remote sensing ground verification, drought prevention and mitigation, flash flood geological disaster prevention, moisture change, Drought impact assessment has important application value.
During the prevention and control of the new crown pneumonia epidemic, the application of sensors is more common. The core devices of temperature guns, air purifiers, electronic seals and other products are sensors, and the demand for products is explosive growth. For example, the "electronic seal" contains motion sensors, once touched, the built-in communication module will send alarm information to the server and broadcast, which can realize 24-hour supervision and service for people in home isolation, and effectively guard the "last kilometer" of epidemic prevention and control.
With the popularity of smart home networks, sensing devices such as air quality, security sensing, smoke alarm, and water immersion monitoring have become the "eyes, noses, and ears" in the home, bringing a new digital dividend to people's lives.