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Pulsed eddy current-based slurry state detection probe, device and method

A state detection device and state detection technology are applied in measurement devices, analysis materials, material magnetic variables, etc., which can solve the problems of complicated operation steps and high evaluation price.

Pending Publication Date: 2022-07-01
XUZHOU NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods can obtain the uniformity information of the ceramic slurry to a certain extent, but there is a problem: the operation steps are complicated and cumbersome, and it is difficult to obtain the value of the uniformity of the slurry as a whole while ensuring accurate measurement accuracy and meeting the timeliness expression, and is expensive to evaluate

Method used

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  • Pulsed eddy current-based slurry state detection probe, device and method
  • Pulsed eddy current-based slurry state detection probe, device and method
  • Pulsed eddy current-based slurry state detection probe, device and method

Examples

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Embodiment 1

[0041] see figure 1 , figure 1 It is a schematic structural diagram of a slurry state detection probe based on pulse eddy current provided by an embodiment of the present invention. The embodiment of the present invention provides a slurry state detection probe based on pulsed eddy current, including a pickup coil 1 , an excitation coil 2 , an insulating layer 3 , a casing 4 and a coil shaft 5 . The pickup coil 1 is wound around the upper end of the shaft body of the coil shaft 5 , and the excitation coil 2 is wound around the lower end of the shaft body of the coil shaft 5 . A predetermined distance is set between the upper and lower ends of the coil shaft 5 to separate the pickup coil 1 and the excitation coil 2 . The pickup coil 1, the excitation coil 2 and the coil shaft 5 are all elliptical in shape.

[0042] The pickup coil 1 is used to apply a pulse excitation signal, and the pulse excitation signal will change with the difference of the slurry density and particle p...

Embodiment 2

[0047] see figure 2 , figure 2 It is a schematic block diagram of a slurry state detection device based on pulse eddy current provided by an embodiment of the present invention. A slurry state detection device based on pulsed eddy current provided by the embodiment of the present invention includes: a control module 101 , a slurry state detection probe 102 , a data processing module 103 and an arithmetic module 104 .

[0048] The control module 101 is used to drive the slurry state detection probe 102 . The module 101 specifically includes: a pulse signal generating unit, a digital-to-analog converting unit, a driving circuit unit and a transmitting circuit unit.

[0049] The pulse signal generating unit is used for outputting a pulse driving signal, and the upper computer controls the pulse signal generator to output a sine wave driving signal. The analog conversion unit is used to convert the sine wave drive signal into an analog signal using a D / A converter and input i...

Embodiment 3

[0069] see image 3 , image 3 This is a schematic flowchart of a method for detecting a slurry state based on a pulsed eddy current provided by an embodiment of the present invention. The method includes steps 101 to 104, and the specific steps are as follows:

[0070] Step 101 : drive the slurry state detection probe according to the embodiment of the present invention; wherein, the slurry detection probe is located at a preset distance directly above the to-be-detected slurry container.

[0071] Step 102 : controlling the interior of the slurry container to be tested to generate an eddy current, so that the slurry state detection probe generates a detection voltage signal according to the eddy current; wherein the slurry container to be tested is used for storing the slurry to be tested.

[0072] Step 103: Perform digital-to-analog conversion on the detection voltage signal, and output the converted data.

[0073] Step 104: Calculate the converted data according to a pres...

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Abstract

The invention discloses a slurry state detection probe, device and method based on pulsed eddy current, the slurry state detection probe comprises a coil shaft, a pick-up coil and a magnet exciting coil, a pulse excitation signal is applied through the magnet exciting coil, vortex is generated in a to-be-detected slurry container, and the to-be-detected slurry is detected through the vortex. The pickup coil generates a corresponding detection voltage signal according to the vortex. The device comprises a control module, a data processing module and an operation module. The slurry state detection probe is used for detecting the slurry state, the pulsed eddy current technology and the slurry state detection are combined, driving of the slurry state detection probe and subsequent data processing and state judgment are achieved through module integration, the detection efficiency is improved, meanwhile, manual data processing work can be reduced, and operation is easy and convenient. And the slurry state detection probe does not need to extend into the detection container and is not influenced by the size of particles in the slurry during detection, so that non-contact measurement can be realized, and the detection precision can be further improved.

Description

technical field [0001] The invention relates to the technical field of pulsed eddy currents, in particular to a slurry state detection probe, method and device based on pulsed eddy currents. Background technique [0002] Multilayer Ceramic Capacitors (MLCC) are one of the most widely used passive electronic components in the modern electronics industry. In the tape casting process, the control of ceramic slurry properties is the top priority, and the key index for slurry performance evaluation is its uniformity. After casting, the slurry with poor uniformity will inevitably cause differences in density at different positions of the green body, which will not only lead to inconsistent shrinkage in all directions during drying, but also cause the green body to deform or even crack. The density distribution of the sintered ceramics is not uniform, which impairs the device performance. [0003] At present, the methods for studying the uniformity of ceramic slurry include sedim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/90G01N27/416
CPCG01N27/90G01N27/416
Inventor 张乐陈俊羽鲍锦任海东曹秀华邵岑康健杨增汪周天元陈浩付振晓
Owner XUZHOU NORMAL UNIVERSITY