CN103792041A - Apparatus for detecting vacuum degree in sealed glass container with top cover - Google Patents
Apparatus for detecting vacuum degree in sealed glass container with top cover Download PDFInfo
- Publication number
- CN103792041A CN103792041A CN201210432901.9A CN201210432901A CN103792041A CN 103792041 A CN103792041 A CN 103792041A CN 201210432901 A CN201210432901 A CN 201210432901A CN 103792041 A CN103792041 A CN 103792041A
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- current vortex
- vortex sensor
- chip microcomputer
- sensor
- container closure
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Abstract
Provided is an apparatus for detecting vacuum degree in a sealed glass container with a top cover. The apparatus comprises a first current vortex sensor acting on the center position of a container closure and a second current vortex sensor acting on the edge position of the container closure. The probe of the first current vortex sensor employs a shape consistent with the outer contour of the container closure, the first current vortex sensor is connected with one input end of a difference amplifier through a first sensor circuit; the second current vortex sensor is connected with the other input end of the difference amplifier through a second sensor circuit; the output end of the difference amplifier is connected with a single-chip microcomputer; the single-chip microcomputer is connected with a display screen on the single-chip microcomputer; and the single-chip microcomputer communicates with a host computer through a wired mode. According to the invention, the two current vortex sensors are utilized for detection, the measuring precision is high, and the vibration influence can be eliminated.
Description
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Technical field
The present invention relates to vacuum tightness detection technique field, particularly vacuum-ness detecting device in a kind of sealed glass container with top cover.
Background technology
In engineering, usually hold some products with the glass container of sealing, as food, special industry raw material etc., need to carry out vacuum tightness detection to the closed container packing into after product, see and whether can reach requirement.Detection is in the past by manual type, judges according to the acoustic situations after beaing, and use afterwards vacuum meter, but vacuum meter need to be inserted into probe in container, must destroy like this sealing, therefore can only do sampling observation and use.Obtain vacuum tightness information with machinery range finding and current vortex Non-Destructive Testing at present, machinery range finding is, at seal location, machinery range finding element is installed, detect according to the sealing deformation quantity before and after vacuumizing, efficiency is lower, and current vortex method is to measure with single current vortex sensor, due to sealing influence of crust deformation, exceed hundred times than current vortex sensor precision, therefore make measurement result not accurate enough, and spot measurement need to be carried out in the situation that multiple containers are all static, otherwise can be because vibration effect result.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide vacuum-ness detecting device in a kind of sealed glass container with top cover.
To achieve these goals, the technical solution used in the present invention is:
Vacuum-ness detecting device in a kind of sealed glass container with top cover, comprise the first current vortex sensor that acts on container closure center and the second current vortex sensor that acts on container closure marginal position, wherein the probe of the first current vortex sensor adopts the shape consistent with container closure outline, the first current vortex sensor is by an input end of first sensor circuit access differential amplifier, the second current vortex sensor is by another input end of the second sensor circuit access differential amplifier, the output terminal of differential amplifier connects single-chip microcomputer, on single-chip microcomputer, be connected to display screen, between single-chip microcomputer and host computer, communicate by letter by wired mode.
Compared with prior art, the present invention detects with two current vortex sensors, and measuring accuracy is high, and can eliminate vibration effect.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is carried out to more detailed explanation.
As shown in the figure, the present invention is vacuum-ness detecting device in a kind of sealed glass container with top cover, comprise the first current vortex sensor that acts on container closure center and the second current vortex sensor that acts on container closure marginal position, wherein the probe of the first current vortex sensor adopts the shape consistent with container closure outline, the first current vortex sensor is by an input end of first sensor circuit access differential amplifier, the second current vortex sensor is by another input end of the second sensor circuit access differential amplifier, the output terminal of differential amplifier connects single-chip microcomputer, on single-chip microcomputer, be connected to display screen, between single-chip microcomputer and host computer, communicate by letter by wired mode.
Principle of the present invention is:
After energising work, the first current vortex sensor detects the average height of a certain circumference range, and the second current vortex sensor detects sealing centre-height, these two output voltages complete analog to digital conversion after differential amplifier amplifies in single-chip microcomputer, that is to say that the sealing height that two sensors are detected converts the output of DC voltage amount to, the difference of two voltages is proportional with sealing elastic deformation amount.Through comparing analysis with standard volume, can show that whether vacuum tightness is qualified, and result is shown by display screen, be uploaded to host computer simultaneously and be further analyzed use.
Claims (1)
1. vacuum-ness detecting device in the sealed glass container with top cover, it is characterized in that, comprise the first current vortex sensor that acts on container closure center and the second current vortex sensor that acts on container closure marginal position, wherein the probe of the first current vortex sensor adopts the shape consistent with container closure outline, the first current vortex sensor is by an input end of first sensor circuit access differential amplifier, the second current vortex sensor is by another input end of the second sensor circuit access differential amplifier, the output terminal of differential amplifier connects single-chip microcomputer, on single-chip microcomputer, be connected to display screen, between single-chip microcomputer and host computer, communicate by letter by wired mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432901.9A CN103792041A (en) | 2012-11-03 | 2012-11-03 | Apparatus for detecting vacuum degree in sealed glass container with top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432901.9A CN103792041A (en) | 2012-11-03 | 2012-11-03 | Apparatus for detecting vacuum degree in sealed glass container with top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103792041A true CN103792041A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210432901.9A Pending CN103792041A (en) | 2012-11-03 | 2012-11-03 | Apparatus for detecting vacuum degree in sealed glass container with top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103792041A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403355A (en) * | 2015-12-10 | 2016-03-16 | 东文高压电源（天津）股份有限公司 | High-precision vacuum tube vacuum degree tester and test method |
| CN114279625A (en) * | 2021-12-03 | 2022-04-05 | 北京晨晶精仪电子有限公司 | Vacuum degree detection circuit, vacuum degree detection method and vacuum gauge |
-
2012
- 2012-11-03 CN CN201210432901.9A patent/CN103792041A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403355A (en) * | 2015-12-10 | 2016-03-16 | 东文高压电源（天津）股份有限公司 | High-precision vacuum tube vacuum degree tester and test method |
| CN105403355B (en) * | 2015-12-10 | 2017-12-22 | 东文高压电源（天津）股份有限公司 | A kind of high-precision vacuum tube vacuum-degree tester and method of testing |
| CN114279625A (en) * | 2021-12-03 | 2022-04-05 | 北京晨晶精仪电子有限公司 | Vacuum degree detection circuit, vacuum degree detection method and vacuum gauge |
| CN114279625B (en) * | 2021-12-03 | 2024-05-10 | 北京晨晶电子有限公司 | Vacuum degree detection circuit, vacuum degree detection method and vacuum gauge |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |