Device and method for detecting air volume at high precision

• Main Authors: HU HAIDONG, LIU DONGYANG, CHEN MENGWEI, ZHANG HENGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention relates to the technical field of air volume detection, and discloses a high-precision air volume detection device which comprises an ultrasonic transmitting and receiving device, a signal processing module, a timing module, a temperature sensing module and a processing module. The signal processing module is used for performing amplification, frequency selection, amplitude limiting and shaping processing on the received ultrasonic signals; the timing module is used for recording starting and ending time of ultrasonic waves; the temperature sensing module is used for collecting temperature data of a detection environment; the processing module is used for determining transmission time of the ultrasonic signals and a temperature compensation value and finally obtaining the air volume according to the transmission time and the temperature compensation value. The ultrasonic sensor is used for detecting the air volume, the structure is simple, installation is convenient, damage is not likely to happ