Is the pressure sensor suitable for atmospheric pressure monitoring system?
Atmospheric pressure refers to the pressure generated by the air at a certain location on the earth. The air on the earth's surface is affected by gravity, which creates atmospheric pressure. The density of the air layer above the earth is not equal. Because atmospheric pressure is produced by the gravity of the air, the height of the air column above it is very small, and the density is also very small. Therefore, the higher the distance from the ground, the lower the atmospheric pressure. The denser the air nearby. Under normal conditions, every time it is lower than 2 kilometers and every 12 meters in height, the atmospheric pressure will drop by 1 mm Hg.
Humans are not sensitive to changes in atmospheric pressure. Unless the ears suddenly appear abnormal when climbing a mountain, the influence of atmospheric pressure is not obvious. However, it is understood that the impact of atmospheric pressure changes will appear in many other areas, especially in sensitive industrial applications or experimental research.
Many research laboratories use barometers to measure atmospheric pressure in one facility, and then use this data to replicate the same environmental conditions in another laboratory. For example, the atmospheric pressure measured in Beijing is significantly different from that measured in Shenzhen, so it will affect the results of experiments or tests unless it is measured in a complete vacuum. Another obvious example is cooking. Because the boiling point of liquid is different under different atmospheric pressure conditions, the cooking time should be adjusted accordingly in high altitude areas.
Therefore, in order to meet the requirements for air pressure in different scenarios, a pressure sensor is needed. The gas pressure sensor is a pressure measuring device that can convert the measured pressure information into visual signal output according to relevant standards. For example, pressure sensors are used in atmospheric pressure monitoring systems.
With the gradual deepening of the prevention and control of air pollution, China's air environment monitoring network with urban air quality monitoring stations and regional air quality monitoring stations as the main body has been continuously improved. Many provinces (cities, districts) have begun to build environmental air quality monitoring stations.
The main function of the air quality monitoring station is to conduct 24-hour continuous online monitoring of conventional pollution factors and meteorological parameters in the air, provide analytical data to the Environmental Protection Agency, as a reference for air quality, and assist in environmental protection decision-making. However, in order to accurately and comprehensively monitor air quality, the development and application of gas pressure sensors are naturally inseparable.
For the selection of the pressure sensor, the technical engineer of Gongcai.com recommends choosing the pressure sensor for the ultra-small digital barometer-MS5540C. The pressure sensor also integrates a temperature sensor and a microcontroller with ADC interface to provide 16-bit pressure and temperature. The digital output of the parameters also provides 6 readable parameters for software calibration of pressure and temperature to achieve high-precision measurement.
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