CN203857977U - Automatic calibration system of pointer type instrument - Google Patents
Automatic calibration system of pointer type instrument Download PDFInfo
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- CN203857977U CN203857977U CN201320802848.7U CN201320802848U CN203857977U CN 203857977 U CN203857977 U CN 203857977U CN 201320802848 U CN201320802848 U CN 201320802848U CN 203857977 U CN203857977 U CN 203857977U
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- pointer instrument
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- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 description 5
- 230000004927 fusion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004164 analytical calibration Methods 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000005672 electromagnetic field Effects 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- 238000012795 verification Methods 0.000 description 1
Abstract
The utility model relates to an automatic calibration system of a pointer type instrument. The system consists of a camera, an electric cloud platform, a bus, a memory, a testing power supply, a standard meter and an upper computer. The testing power supply, the standard meter, the bus, the upper computer, and the memory are successively connected; the electric cloud platform, the camera, the bus, the upper computer and the memory are successively connected; the electric cloud platform, the camera, a calibrated pointer type instrument, the bus, the upper computer, and the memory are successively connected; and the electric cloud platform moves the camera to a position above the calibrated pointer type instrument. According to the technical scheme, the electric cloud platform is used for conveying the camera to the position that is above the dial plate and is perpendicular to the pointer; the collected image is sent back to the upper computer by the bus; and the tested indication value is identified by using the image processing technology, thereby realizing calibration. Therefore, the means can be provided for automatic calibration of various pointer type instruments.
Description
Technical field
The utility model belongs to pointer instrument collimation technique, specifically relates to a kind of automated calibration system of pointer instrument.
Background technology
Pointer instrument is to utilize pointer position to represent the device of measurement result.Although digital instrument is used in a large number at present, but that pointer instrument has is simple in structure, easy to maintenance, be not subject to the interference of electromagnetic field, the advantage such as reliability is high, low price, in industry, civilian and military fields such as electric system, pneumatic system, hydraulic systems, is still widely used.
To pointer instrument, adopt traditional manual calibration mode to have many drawbacks.The uncertainty of human factor, as the collimation error and visual fatigue etc., can cause the problems such as number of degrees precision is low, poor repeatability; Operation lack of standardization in calibration process, can cause artificial calibrated meter table to damage as privately adjusted reading etc.; Each adopts the required calibration personnel that arranges of enterprises and institutions and Research Center of pointer instrument, increases handling cost.Therefore, be necessary the calibration steps of pointer instrument to inquire into, a series of relevant issues such as research automatic calibration, guarantee the accuracy that pointer instrument is calibrated.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of automated calibration system of pointer instrument, can be applied on all kinds of pointer instruments, the utility model consists of video camera, electric platform, bus, storer, testing power supply, standard scale and host computer and daemon software.Electric platform, for installing and fixed cameras, video camera can be transported to the position perpendicular to pointer that is observed dial plate top, is realized Vertical Observation, guarantees the accuracy that video data reads.Video camera is responsible for gathering image information, and the image mode by data line or radio communication after rough handling, compression of carrying out is uploaded to host computer.Testing power supply provides unified reference for standard scale and tested pointer instrument, usings the reading of standard scale as conventional true value.The daemon software of host computer can carry out registration and fusion to the image of uploading, identify scale, scale and the pointer position of pointer instrument, determine the number of degrees of tested pointer instrument, thereby obtain the number of degrees of pointer instrument and the error of conventional true value, standard scale also shows actual value, calibration value and the image gathering in human-computer interaction interface, store results, realizes the automatic calibration of pointer instrument.
The purpose of this utility model is to adopt following technical proposals to realize:
An automated calibration system for pointer instrument, its improvements are, described system comprises video camera, electric platform, bus, storer, testing power supply, standard scale and host computer;
Described testing power supply, standard scale, bus, host computer and storer are connected successively; Described electric platform, video camera, bus, host computer and storer are connected successively;
Described electric platform, video camera, be calibrated pointer instrument, bus, host computer and storer and be connected successively;
Described electric platform mobile camera is to being calibrated pointer instrument top.
Preferably, on described electric platform, install and fixed cameras.
Preferably, described video camera is perpendicular to the pointer position that is calibrated pointer instrument top.
Preferably, described testing power supply be calibrated pointer instrument and be connected.
Preferably, described host computer comprises image registration and Fusion Module, picture recognition module, human-computer interaction interface, electric platform control module.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model utilizes electric platform video camera can be transported to dial plate top perpendicular to the position of pointer, sends the image collecting back to host computer, and utilize image processing techniques to identify tested expression value by bus, realizes calibration.
The utility model utilizes electric platform video camera can be transported to dial plate top perpendicular to the position of pointer, has avoided the error being caused by observation angle.
The utility model is kept at calibration result and original image in storer simultaneously, can conveniently inquire about and solve query.
The utility model obtains the reading that is calibrated pointer instrument by image processing techniques, avoided the impact of human factor on calibration result.
The utility model, by total line traffic control, can be calibrated pointer instrument to many simultaneously and calibrate.
The automatic calibration that the utility model can be all kinds of pointer instruments provides means.
Accompanying drawing explanation
The automated calibration system schematic diagram of a kind of pointer instrument that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
The automated calibration system of a kind of pointer instrument that the utility model provides comprises testing power supply 1, standard scale 2, bus 3, host computer 4, electric platform 5, video camera 6 and storer 7.
Described testing power supply, standard scale, bus, host computer and storer are connected successively; Described electric platform, video camera, bus, host computer and storer are connected successively.
On described electric platform, install and fixed cameras.
Described video camera is perpendicular to the pointer position that is calibrated pointer instrument top.
Described testing power supply be calibrated pointer instrument and be connected.
Described host computer comprises image registration and Fusion Module, picture recognition module, human-computer interaction interface, electric platform control module.
The automated calibration system of a kind of pointer instrument that the utility model provides is implemented specific as follows:
1, testing power supply 1 exports the reference value of the amount of being calibrated to standard scale 2 and tested instrument, and the reading of standard testing instrument 2 is transferred in host computer 4 by bus 3 as actual value.
2, electric platform 5 moves to assigned address by video camera 6, and in 6 pairs of observation areas of video camera, image gathers.
3, the data after gathering are uploaded to host computer 4 by bus 3.
4, when host computer, receive uploading after image of each pickup area, each image is spliced and merged, and in the total image forming, carry out the identification of scale, scale and pointer position by picture recognition module.
The reading of the data that 5, identify and standard testing instrument 2 (actual value) relatively, can obtain the error and uncertainty of tested instrument, realizes calibration.
6, the error of the data that identify, actual value, tested table and uncertainty and the image that gathers are shown simultaneously in human-computer interaction interface, and preserve in storer 7.
Wherein, host computer 4, also by electric platform control module, is realized the control to video camera 6 positions, makes video camera 2 can whole instrument sweeping be retouched or certain fixed position is observed.
Wherein, can by electric platform, video camera be transported to the position perpendicular to pointer that is observed dial plate top, realize Vertical Observation, reduce calibration error.
Wherein, the image uploading gathering can be arrived to host computer, by image co-registration, splicing and recognition technology, the reading of automatic acquisition pointer instrument.
Wherein, can be by host computer Program, according to the reading of the number of degrees of standard scale and the tested table that identifies, the calibration value of the tested table of automatic acquisition.
Wherein, can by the control of electric platform is realized video camera to the scanning of whole instrument dial plate with automatic calibration, or the observation of certain fixed position is realized to artificial verification.
Wherein, can to calibration result and the image that gathers, preserve by storer, and recall when check.
Embodiment
1, the program control direct current power source CL6019 in three-phase alternating current-direct current instrument calibration device CL3601B exports current reference value to standard scale CL311V2 and tested table ac and dc current table T30, and the reading of standard scale CL311V2 passes through RS485 bus transfer in host computer as actual value.
2, electric platform moves to assigned address by integrated camera SCZ-2250PD, and SCZ-2250PD gathers image in observation area.
3, the data after gathering are uploaded to host computer by RS485 bus.
4, when host computer is received uploading after image of each pickup area, each image is carried out to the pre-service such as image change, enhancing, filtering, Threshold segmentation, binaryzation, expansion and refinement, carry out again stitching algorithm and the blending algorithms such as registration, location and zone of transition fusion of image, and in the total image forming, carry out the identification of scale, scale and pointer position by stencil matching and pointer recognizer.
5, the read-around ratio of the data that identify and standard scale CL311V2, adopts pairing comparision can obtain the error and uncertainty of ac and dc current table T30, realizes calibration.
6, the error of the data that identify, actual value, tested table and uncertainty and the image that gathers are shown simultaneously in human-computer interaction interface, and preserve in storer.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. an automated calibration system for pointer instrument, is characterized in that, described system comprises video camera, electric platform, bus, storer, testing power supply, standard scale and host computer;
Described testing power supply, standard scale, bus, host computer and storer are connected successively; Described electric platform, video camera, bus, host computer and storer are connected successively;
Described electric platform, video camera, be calibrated pointer instrument, bus, host computer and storer and be connected successively;
Described electric platform mobile camera is to being calibrated pointer instrument top.
2. the automated calibration system of a kind of pointer instrument as claimed in claim 1, is characterized in that, on described electric platform, installs and fixed cameras.
3. the automated calibration system of a kind of pointer instrument as claimed in claim 1, is characterized in that, described video camera is perpendicular to the pointer position that is calibrated pointer instrument top.
4. the automated calibration system of a kind of pointer instrument as claimed in claim 1, is characterized in that, described testing power supply be calibrated pointer instrument and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802848.7U CN203857977U (en) | 2013-12-09 | 2013-12-09 | Automatic calibration system of pointer type instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802848.7U CN203857977U (en) | 2013-12-09 | 2013-12-09 | Automatic calibration system of pointer type instrument |
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| CN203857977U true CN203857977U (en) | 2014-10-01 |
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| CN201320802848.7U Expired - Lifetime CN203857977U (en) | 2013-12-09 | 2013-12-09 | Automatic calibration system of pointer type instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021220A (en) * | 2015-08-03 | 2015-11-04 | 广州供电局有限公司 | Pointer type instrument calibration method, system and device thereof |
| CN106855990A (en) * | 2015-12-09 | 2017-06-16 | 中核核电运行管理有限公司 | Nuclear power generating sets instrument channel measurement error Demonstration Method |
| CN109211268A (en) * | 2018-08-15 | 2019-01-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of gauge pointer calibration method, device and computer readable storage medium |
| CN109490807A (en) * | 2018-11-28 | 2019-03-19 | 江苏方天电力技术有限公司 | Display instrument automatic recognition system and method for calibration based on image processing techniques |
| CN110220545A (en) * | 2019-07-03 | 2019-09-10 | 国家电网有限公司 | Primary equipment instrument signal checking method, device and terminal device |
-
2013
- 2013-12-09 CN CN201320802848.7U patent/CN203857977U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021220A (en) * | 2015-08-03 | 2015-11-04 | 广州供电局有限公司 | Pointer type instrument calibration method, system and device thereof |
| CN106855990A (en) * | 2015-12-09 | 2017-06-16 | 中核核电运行管理有限公司 | Nuclear power generating sets instrument channel measurement error Demonstration Method |
| CN106855990B (en) * | 2015-12-09 | 2020-09-15 | 中核核电运行管理有限公司 | Nuclear power unit instrument channel measurement error demonstration method |
| CN109211268A (en) * | 2018-08-15 | 2019-01-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of gauge pointer calibration method, device and computer readable storage medium |
| CN109490807A (en) * | 2018-11-28 | 2019-03-19 | 江苏方天电力技术有限公司 | Display instrument automatic recognition system and method for calibration based on image processing techniques |
| CN109490807B (en) * | 2018-11-28 | 2023-09-19 | 江苏方天电力技术有限公司 | Automatic identification system and verification method for display instrument based on image processing technology |
| CN110220545A (en) * | 2019-07-03 | 2019-09-10 | 国家电网有限公司 | Primary equipment instrument signal checking method, device and terminal device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |