Automatic sound calibration device

Abstract

The invention discloses an automatic sound calibrating device, and relates to the technical field of automatic noise continuous monitoring equipment calibrating. The device comprises a main control panel, a standard signal generating panel, an acoustic generator, a microphone, a wind cover, a regulation controller and a sound level meter, wherein the main control panel is connected with the standard signal generating panel, the standard signal generating panel is connected with the acoustic generator, the lower portion of the acoustic generator is the calibrated microphone, the microphone is connected with the regulation controller which is connected with the sound level meter, and the regulation controller and the sound level meter are both connected with the main control panel. According to the automatic sound calibration device, time and labor are saved, cost is saved, the automation degree is high, equipment can be calibrated at any time, calibration time can be set in an user-defined mode, a calibrating result can be transmitted to equipment maintenance staff in real time in a wireless mode, the maintenance-free degree is high, the mechanical structure is compact and practical, the size is small, the weight is low, performance is stable, precision is high and power consumption is low.

Description

technical field [0001] The invention relates to an automatic sound calibration device, which belongs to the technical field of calibration of continuous automatic noise monitoring equipment. Background technique [0002] Sound calibration is a calibration method for the precision and accuracy of sound level meters or other sound measuring instruments. Compared with other calibration methods, this method is easy to operate, accurate and effective, and has been widely recognized and applied in the market. Among them, the tool sound calibrator used in the calibration is a calibration instrument that generates absolute sound pressure standards. Its operating frequency is 1000 Hz and provides two standard sound pressure levels of 94dB and 114dB. 94dB is the reference sound pressure level recommended by the standard. The 114dB sound pressure level is suitable for on-site calibration with high background noise, but now the calibration process of the sound calibrator needs to manual...

AI Technical Summary

Problems solved by technology

[0002] Sound calibration is a calibration method for the precision and accuracy of sound level meters or other sound measuring instruments. Compared with other calibration methods, this method is easy to operate, accurate and effective, and has been widely recognized and applied in the market. Among them, the tool sound calibrator used in the calibration is a calibration instrument that generates absolute sound pressure standards. Its operating frequency is 1000 Hz and provides two standard sound pressure levels of 94dB and 114dB. 94dB is the reference sound pressure level recommended by the standard. The 114dB sound pressure level is suitable for on-site calibration with high background noise, but now the calibration process of the sound calibrator needs to manually send the sound level meter or other sound measuring instruments to the laboratory for sound calibration, or the calibrator carries the calibrator to the monitoring On-site calibration is very time-consuming, laborious, costly, and human-influenced; for continuous automatic monitoring sound level meters and other continuous monitoring sound equipment, data continuity is required, and the original calibration process interrupts monitoring data for a long time

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