Precautions for road traffic noise detection
With the rapid development of urban road traffic, the problem of traffic noise pollution has become increasingly prominent.
Among the various noises that affect the living environment, road traffic noise is the main noise source, both in terms of noise pollution and noise intensity.
The impact of road traffic noise on the living environment is characterized by long interference time, wide pollution areas, and high noise levels.
Road traffic noise measurement can not only grasp the pollution situation of urban road traffic noise, but also guide urban road planning.
The measurement of road traffic noise can be carried out with reference to the relevant requirements in GB/T3222-1994 "Acoustic Environmental Noise Measurement Method" and GB3096-93 "Urban Area Environmental Noise Standard".
The measuring instrument is an integral sound level meter with an accuracy of type 2 or above, and its performance meets the requirements of GB3785.
Things to note when detecting road traffic noise are as follows:
1. The measurement should be carried out under weather conditions with no rain or snow, and the measurement should be stopped when the wind speed reaches more than 5m/s. The microphone is equipped with a windshield during measurement.
2. Select a certain traffic trunk line as the measurement section, and select the measurement point on the sidewalk between the two intersections, 20cm away from the curb of the roadway;
The distance between here and the intersection should be greater than 50m. Arrange 5 measuring points on the measuring road section and draw the measuring point layout diagram.
3. Use a sound level calibrator to calibrate the measuring instrument, and the deviation should not be greater than 0.5dB.
4. Conduct traffic noise measurements continuously for 20 minutes, and use two counters to record the number of large vehicles and small vehicles respectively.
5. Repeat the above measurements at 5 different measuring points on the same road section.
What about road traffic noise detection precautions? Is road traffic noise detection relatively simple?
As long as you choose a suitable sound level meter and according to the testing standards, you can get the noise value that meets the standards.
