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Dust concentration detection system based on dual-frequency ultrasound, and detection method thereof

A technology of dust concentration detection and dual-frequency ultrasound, which is applied in measuring devices, suspension and porous material analysis, particle suspension analysis, etc., can solve the problems of small dust concentration measurement range and insufficient test accuracy

Active Publication Date: 2018-10-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

When using ultrasonic method for single-frequency detection, the measurable range of dust concentration is small, and the test accuracy is not high enough, so it is not suitable for high-concentration and high-precision dust concentration detection

Method used

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  • Dust concentration detection system based on dual-frequency ultrasound, and detection method thereof
  • Dust concentration detection system based on dual-frequency ultrasound, and detection method thereof
  • Dust concentration detection system based on dual-frequency ultrasound, and detection method thereof

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Embodiment Construction

[0073] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0074] Such as figure 1 As shown, the dust concentration detection system based on dual-frequency ultrasound in this embodiment includes: a dual-frequency ultrasonic sensing unit, a control processor, a computing processor, a drive circuit, a signal processing circuit, a power management circuit, and a temperature sensor; The frequency ultrasonic sensing unit includes one or more sets of first ultrasonic transducers and one or more sets of second ultrasonic transducers, and the ultrasonic frequency of the first ultrasonic transducers is f 1 , the ultrasonic frequency of the second ultrasonic transducer is f 2 , and f 1 ≠f 2 The control processor is connected to the drive circuit, and the drive circuit is connected to the dual-frequency ultrasonic sensing unit. The dual-frequency ultrasonic sensing unit is connected to the signal process...

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Abstract

The invention discloses a dust concentration detection system based on dual-frequency ultrasound, and a detection method thereof. A dual-frequency ultrasonic sensing unit including a first ultrasonicsensor and a second ultrasonic sensor is adopted to respectively acquire a first ultrasonic signal and a second ultrasonic signal, a temperature sensor is adopted to acquire a temperature signal, thefirst ultrasonic signal and the second ultrasonic signal undergo environmental compensation, the volume concentration of dual-frequency ultrasound compounded multi-phase particles is obtained by a feature fusion algorithm in order to realize the complementation of the test performance or test data, make up for the deficiency of single frequency detection and complete the fast, accurate and efficient detection of a complex test object. A controller is controlled to receive the concentration data in an interrupt mode, so no waiting time is required, the parallel implementation of signal acquisition and concentration calculation is realized, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to dust concentration detection technology, in particular to a dust concentration detection system and detection method based on dual-frequency ultrasound. Background technique [0002] In order to comprehensively and accurately detect the dust concentration information in the enclosed area, better grasp the status of the dust concentration, prevent the harm to the body of the operator and the impact on the operation of the machine and equipment when the concentration exceeds the standard, it is necessary to promptly predict and solve the problem of high-concentration dust. It plays an important role in ensuring personal safety and improving environmental quality. [0003] At present, the methods for dust concentration detection and measurement at home and abroad mainly include filter weighing method, ray method, piezoelectric crystal induction method, optical method, capacitance method, charge induction method, and ultrasonic met...

Claims

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Application Information

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IPC IPC(8): G01N15/06
CPCG01N15/06
Inventor 章艳廖茂浩娄文忠
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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