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Methods and apparatus to verify operation of acoustic emission sensors

A technology of acoustic emission sensor and loudspeaker, which is applied in the direction of material analysis, measurement device, sequence/logic controller program control and other directions using acoustic emission technology, which can solve the problem of wrong acoustic emission sensor function and cannot satisfy the repeatability of acoustic emission sensor Issues such as practical implementation requirements

Pending Publication Date: 2018-06-29
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these known tests do not meet the repeatability and / or practical implementation requirements needed to properly evaluate AE sensors, and may also lead operators or technicians to incorrectly evaluate the functionality of AE sensors

Method used

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  • Methods and apparatus to verify operation of acoustic emission sensors
  • Methods and apparatus to verify operation of acoustic emission sensors
  • Methods and apparatus to verify operation of acoustic emission sensors

Examples

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Embodiment Construction

[0012] Methods and apparatus for verifying the operation of an acoustic emission sensor are disclosed. Acoustic emission sensors are commonly used to verify the operation and / or operational status of equipment (eg, process control equipment). As a result, the functionality of the acoustic emission sensor is verified to ensure that the data collected from the acoustic emission sensor is precise and / or accurate. Accordingly, some known test / monitoring systems utilize a cartridge break test. Other known test / monitoring systems utilize multiple acoustic emission sensors and / or piezoelectric devices to verify the operation of the acoustic emission sensors.

[0013] Examples disclosed herein provide an accurate and cost-effective way of characterizing the operational state or condition of an acoustic emission sensor and / or data link associated with the acoustic emission sensor. Specifically, the examples disclosed herein utilize an acoustic source (e.g., DC motor, asymmetric motor...

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Abstract

Methods and apparatus verify operation of acoustic emission sensors are disclosed. A disclosed example apparatus includes an acoustic source acoustically coupled to a device, wherein the acoustic source is to generate an acoustic signal, and a processor to determine an operational condition of an acoustic emission sensor associated with the device based on measuring the generated acoustic signal at the acoustic emission sensor.

Description

technical field [0001] In general, the present disclosure relates to acoustic emission sensors, and more particularly, to methods and apparatus for verifying the operation of acoustic emission sensors. Background technique [0002] Acoustic emission sensors are commonly used in known monitoring systems to monitor the operating state of equipment to which the acoustic emission sensor is coupled, such as a valve or other process control equipment. In some known examples, the acoustic emission sensor is monitored to determine whether the acoustic emission sensor is functioning properly, and thus determines whether measurements from the acoustic emission sensor are accurate. One known method of verifying this functionality is the lead break test, which involves a person (eg, an operator or technician) breaking the lead of a mechanical pencil adjacent to the acoustic emission sensor. Another known test involves the use of piezoelectric sensors in reciprocity mode. However, thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
CPCG05B19/058G05B2219/14006G01N29/045G01N29/14G01N29/2437G01N29/30G01N29/4436
Inventor R·A·努德斯特伦B·A·达梅S·E·杰尔肯
Owner FISHER CONTROLS INT LLC