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A method and device for detecting an index of an ultrasonic sensor

A detection device and sensor technology, applied in the field of measurement, can solve the problems of product parameter consistency error, detection envelope range without quantitative detection and judgment, etc., achieve the goal of using less materials, simple and easy test method, and reduced test cost Effect

Active Publication Date: 2016-05-11
SHENZHEN HANGSHENG ELECTRONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The test of traditional ultrasonic sensors can only consider whether the distance measuring function of the sensor is normal. This measurement mode is affected by the change of the material and surface finish of the PVC pipe; There is no quantitative detection and judgment of the detection envelope range; and the distance measurement is realized based on the reflection of the PVC pipe, resulting in a large error in the consistency of the product parameters

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  • A method and device for detecting an index of an ultrasonic sensor
  • A method and device for detecting an index of an ultrasonic sensor
  • A method and device for detecting an index of an ultrasonic sensor

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] The numbers in the figure indicate: 1. Upper microphone; 2. Lower microphone; 3. Left microphone; 4. Right microphone; 5. Middle microphone; 6. Transmitting sensor; 7. Sensor under test; 8. NIDSA acquisition module; 9. Shielding box.

[0038] like figure 1 As shown, an ultrasonic sensor index detection method is provided, comprising the following steps,

[0039] S1. Make the sensor under test in the continuous wave sending mode;

[0040] S2, using 5 high-frequency microphones to collect ultrasonic signals;

[0041] S3, using the collection module to collect the ultrasonic signal in step S2; this collection module is a NIDSA collection module;

[0042] S4, judging whether the beam angle and sound pressure level of the sensor under test are up to standard;

[0043] S5. Use the transmitting sensor to send an ultrasonic signal with a c...

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Abstract

The invention relates to the measurement field, in particular to an ultrasonic wave sensor index detection method and device. The ultrasonic wave sensor index detection method includes the following steps: A, enabling a detected sensor to be in a continuous wave generating mode, B, collecting ultrasonic wave signals through five high frequency microphones, C, collecting the ultrasonic wave signals in the step B through a collecting module, D, judging whether wave beam angles and sound pressure levels of the detected sensor reach the standard or not, E, sending the ultrasonic wave signals at the certain sound pressure level through a transmitting sensor to enable the detected sensor to be in a receiving mode, F, collecting the ultrasonic wave signals, received by the detected sensor, in the step D through a collecting card, and G, judging whether the response sensitivity reaches the standard or not. The detection method is simple and easy to implement, and the performance index of the ultrasonic wave sensor can be comprehensively detected. Compared with a traditional testing jig, the device with the method is small in occupied space and few in use materials and reduces the detecting cost.

Description

technical field [0001] The invention relates to the field of measurement, in particular to an ultrasonic sensor index detection method and device. Background technique [0002] Ultrasonic sensor is a piezoelectric ceramic device, which realizes bidirectional conversion of mechanical energy and electrical energy through piezoelectric effect. Its propagation velocity is 344m / s (25 degrees) and its operating frequency is generally 20kHz to 200kHz. The distance and relative velocity of obstacles are determined through reflection and Doppler effect. The detection distance is generally 1 meter to 2 meters. It is widely used in reversing sonar, anti-theft alarm, flow meter, parking meter, automatic door and other product systems. [0003] like Figure 5 As shown, the detailed workflow of the ultrasonic sensor system is as follows: the controller drives the ultrasonic sensor (integrated transceiver) through the piezoelectric conversion through the drive circuit, and sends out a bun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00G01H11/08
Inventor 唐江周明
Owner SHENZHEN HANGSHENG ELECTRONICS