CN101183031A - Glass-bulb thermometers automatic detection device and detection method - Google Patents
Glass-bulb thermometers automatic detection device and detection method Download PDFInfo
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- CN101183031A CN101183031A CNA2007101785042A CN200710178504A CN101183031A CN 101183031 A CN101183031 A CN 101183031A CN A2007101785042 A CNA2007101785042 A CN A2007101785042A CN 200710178504 A CN200710178504 A CN 200710178504A CN 101183031 A CN101183031 A CN 101183031A
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Abstract
The invention provides an automatic detection device for a glass thermometer and consists of a camera, a data collecting and control equipment, a stepper motor and a bracket. The camera faces the glass thermometer on the bracket for picture shooting and an image signal is outputted to an image collecting and control equipment; the image collecting and control equipment conducts image processing and data analysis about the image signal and then outputs a control signal to control the action of the stepping motor as well as the temperature increasing of a thermostatic tank; the stepper motor drives the bracket to rotate horizontally and lift to complete the automatic detection of the glass thermometer. The invention adopts the stepper motor to control the horizontal rotating and lifting of the bracket and can conduct automatic detection in batch size; the structure of the invention is simple and practical; the invention adopts the camera with the focusing control function in short distance and improves the accuracy and the reliability of detection, meanwhile, the invention avoids that the harmful volatile substance in site to harm human body; the invention adopts an image collecting and processing equipment to determine the indicating value of the glass thermometer and controls the action of the stepper motor and the thermostatic tank according to the determined result; the detection cost is reduced and the working efficiency is improved.
Description
Technical field
The present invention relates to a kind of automatic detection device and detection method, relate in particular to a kind of glass-bulb thermometers automatic detection device and detection method, can be widely used in the glass-stem thermometer of industry measurement, field tests, the automatic detection of pointer instrument.
Background technology
The accuracy of glass-stem thermometer is got representational 4 points usually and is detected, and promptly its lower limit, the upper limit, centre is evenly got two points again and detects, thereby judge its overall performance, and other most pointer instrument also is in this way usually.There are the following problems in the detection of glass-stem thermometer at present: the long time of stable needs of 1, the intensification of calibration cell, temperature, and need the staff to spend the stability of Real Time Observation temperature field ceaselessly of a large amount of time, testing process is consuming time, consumption power, efficient are low; 2, the glass-stem thermometer usage quantity of China is big, and the testing amount of metrological service and instrument industry is quite big; 3, the glass-stem thermometer price is low, and testing cost is also low, and inefficient detection has increased financial cost; 4, the glass-stem thermometer scale is little, is difficult for reading, go wrong easily, to testing staff's visual demand than higher; 5, pollute greatly, the carcinogenic substance that volatilizees when high temperature of the medium oil in the oil groove causes employment injuries easily to the testing staff.How tame metering mechanism is all carrying out the automatic acquisition testing Study on Technology of glass-stem thermometer both at home and abroad at present, but because glass-stem thermometer is different from electrical quantity, the collection of its signal, handle all difficult, especially image recognition, intelligent decision, automatically screens, aspects such as automatic focusing.Domestic what early do this work is China metering institute, and they use camera and display, then by seeing that manually display writes down reading, other also all need manually operate, work efficiency is lower.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of glass-bulb thermometers automatic detection device and detection method are provided, simple in structure, method convenience, possesses the ability that many thermometers detect simultaneously automatically, improved work efficiency, reduce the detection cost, helped the healthy of testing staff.
Technical solution of the present invention is: a kind of glass-bulb thermometers automatic detection device comprises video camera, data acquisition and opertaing device, stepper motor and carriage are formed, video camera is taken over against the glass-stem thermometer that is arranged in calibration cell top carriage, output image signal is to image acquisition and opertaing device, image acquisition and opertaing device carry out exporting the action of control signal control step motor and the intensification of control calibration cell after Flame Image Process and the data analysis to picture signal, and carriage horizontally rotates or lifting drive glass-stem thermometer horizontally rotates or lifting thereby stepper motor drives.
Described video camera is adjustable focus ccd video camera closely.
Described stepper motor is hybrid five phase step motor.
A kind of glass-stem thermometer automatic testing method may further comprise the steps:
(1) quantity and the detected temperature spot of detected glass-stem thermometer are set;
(2) calibration cell is warming up to one of them detected temperature spot and be stabilized to official hour, by video camera first glass-stem thermometer in the carriage taken and output image signal, data acquisition and opertaing device carry out the detection that first glass-stem thermometer finished in Flame Image Process and data analysis to picture signal, after rotating to the angle that configures, second thermometer on data acquisition and an instruction control stepper motor drive of the opertaing device output carriage stop, second glass-stem thermometer taken, repeated said process and finish until all glass-stem thermometer detections;
(3) after a last detected temperature spot detects and finishes, data acquisition and opertaing device control calibration cell are warming up to next dut temperature point and are stabilized to official hour, drive glass-stem thermometer by the step motor control carriage simultaneously and drop to next dut temperature point, begin glass-stem thermometer is carried out the detection of next dut temperature point, detection method is identical with step (2) with order;
(4) repeating step (3) detects until all dut temperature points and finishes.
The present invention compared with prior art has the following advantages:
(1) the present invention adopts horizontally rotating of step motor control carriage and lifting, can carry out automatic batch detection, and is simple and practical.
(2) the present invention adopts and has the closely video camera of adjustable focus function, and the testing staff just can be focused in observation ward, has improved the accuracy and the reliability that detect, has avoided the infringement of on-the-spot unwanted volatile to health simultaneously.
(3) the present invention adopts image acquisition and treatment facility that the glass-stem thermometer indicating value is judged, according to the action of judged result control step motor and calibration cell, has reduced operating personnel's quantity, has reduced the detection cost, has improved work efficiency.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the synoptic diagram of an embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in further detail:
As shown in Figure 1, the present invention is made up of ccd video camera 1, image acquisition and treatment facility 2, stepper motor 3, carriage 4, places 1-10 on the carriage 4 and props up glass-stem thermometer 6, and carriage 4 is installed in the top of calibration cell 5 and is controlled by stepper motor 2.During work, ccd video camera 1 is taken over against the glass-stem thermometer 6 in the calibration cell 5 top carriages 4, ccd video camera 1 output image signal is sent to image acquisition and opertaing device 2 by the RS232 data line with the picture signal that collects, carry out Flame Image Process and data analysis by image acquisition and 2 pairs of picture signals of opertaing device, image acquisition and opertaing device 2 output control signals to stepper motor 3 according to Flame Image Process and analysis result, carriage 4 horizontally rotates or the rotation or the lifting of lifting drive glass-stem thermometer thereby stepper motor 3 drives according to control signal, image acquisition and opertaing device 2 output control signals are carried out temperature control to calibration cell 5 simultaneously, and wherein stepper motor 3 adopts hybrid five phase step motor.
As shown in Figure 2, detect 8 glass-stem thermometers, range ability is 50-200 ℃, and the quantity that at first sets thermometer in the acquisition software of image acquisition and treatment facility is 8, and the detected temperatures point is 4, is respectively 50 ℃, 100 ℃, 150 ℃ and 200 ℃; 8 thermometers insert successively in carriage 4, the reading groove of every thermometer must be outwards so that ccd video camera 1 reading, according to " JJG130-2004 work glass-stem thermometer vertification regulation ", every thermometer exposes fluid column must not be greater than 15mm.Mix up the focal length of video camera 1 and first thermometer, acquisition software is started working, sending for earlier calibration cell 5 heats to 50 ℃ instruction, calibration cell 5 is warming up to 50 ℃, in the temperature-rise period, standard platinum resistance thermometer in the calibration cell 5 sends the temperature signal of calibration cell 5 in real time to computing machine, Deng being heated to 50 ℃, acquisition software is judged stable (per minute temperature fluctuation＜0.05 ℃ of temperature, this value can require setting in the software according to detecting) after, the data of first thermometer of opening entry, after the detected point of first of first thermometer detects and finishes, acquisition software is given an order to stepper motor, control carriage 4 drives thermometer and horizontally rotates counterclockwise, is moved to screens line 21 as second thermometer and needs 10 seconds (horizontal shift speed and time can be set) in software, and (but acquisition time software set) Control Software automatic recording chart is as data in the time of 15 seconds, the gatherer process of all the other six thermometers is identical, and the rest may be inferred.
After first temperature set-point detects and finishes, the acquisition software of image acquisition and treatment facility sends the order that is warming up to 100 ℃ to calibration cell 5, send the order that descends to stepper motor simultaneously, the thermometer that stepper motor drives on the carriage 4 drops to second temperature spot that configures in advance.Because the length difference of each thermometer that detects, check point are not together yet, the stroke that need descend is also just different; Need the testing staff before detection, travel parameters to be set in acquisition software, when thermometer drops to predetermined stroke, and after the temperature field is stable, acquisition software begins to gather and write down second dut temperature point of first thermometer, later detection method is identical with first temperature spot, and the like.
Thermowell on the carriage is by uniform angular distribution, can design different carriages as required: as 4,8,16 holes, if 8 thermometers are inserted in 8 holes, the software control stepper motor horizontally rotates by 45 ° each time and gets final product, if 6 thermometers are inserted in 8 holes, thermometer must sequence successively at preceding 6 jacks, stepper motor horizontally rotates by 45 ° each time, the 6th detected after, software is made judgement according to the thermometer quantity of setting in advance, and first hole of control step driven by motor directly rotates to the screens line.
Glass-bulb thermometers automatic detection device of the present invention can be used for the requirement that instrument and meter such as the glass-stem thermometer, pointer instrument of no electrical parameter output in the metrology and measurement field is gathered automatically, tested, those skilled in the art can carry out variously augmenting, improving and change under the situation of the structure that does not depart from claim and defined according to different designing requirements and design parameter, therefore, the present invention is widely.
Claims (4)
1. glass-bulb thermometers automatic detection device, it is characterized in that: comprise video camera (1), data acquisition and opertaing device (2), stepper motor (3) and carriage (4) are formed, video camera (1) is taken over against many glass-stem thermometers (6) that are arranged in calibration cell (5) top carriage (4), output image signal is to image acquisition and opertaing device (2), image acquisition and opertaing device (2) carry out the action of output control signal control step motor (3) after Flame Image Process and the data analysis and the intensification of control calibration cell (5) to picture signal, and stepper motor (3) drives carriage (4) thereby horizontally rotates or lifting drives glass-stem thermometer (6) and horizontally rotates or lifting.
2. a kind of glass-bulb thermometers automatic detection device according to claim 1 is characterized in that: described video camera (1) is adjustable focus ccd video camera closely.
3. a kind of glass-bulb thermometers automatic detection device according to claim 1 is characterized in that: described stepper motor is hybrid five phase step motor.
4. glass-stem thermometer automatic testing method is characterized in that may further comprise the steps:
(1) quantity and the detected temperature spot of detected glass-stem thermometer are set;
(2) calibration cell is warming up to one of them detected temperature spot and be stabilized to official hour, by video camera first glass-stem thermometer in the carriage taken and output image signal, data acquisition and opertaing device carry out the detection that first glass-stem thermometer finished in Flame Image Process and data analysis to picture signal, after rotating to the angle that configures, second thermometer on data acquisition and an instruction control stepper motor drive of the opertaing device output carriage stop, second glass-stem thermometer taken, repeated said process and finish until all glass-stem thermometer detections;
(3) after a last detected temperature spot detects and finishes, data acquisition and opertaing device control calibration cell are warming up to next dut temperature point and are stabilized to official hour, drive glass-stem thermometer by the step motor control carriage simultaneously and drop to next dut temperature point, begin glass-stem thermometer is carried out the detection of next dut temperature point, detection method is identical with step (2) with order;
(4) repeating step (3) detects until all dut temperature points and finishes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101785042A CN101183031B (en) | 2007-11-30 | 2007-11-30 | Glass thermometers automatic detection method |
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| CN2007101785042A CN101183031B (en) | 2007-11-30 | 2007-11-30 | Glass thermometers automatic detection method |
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| CN101183031B CN101183031B (en) | 2010-06-30 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949746A (en) * | 2010-08-30 | 2011-01-19 | 中国人民解放军后勤工程学院 | Automatic calibration method of visual thermometer and automatic thermometer calibrator |
| CN102288327A (en) * | 2011-04-26 | 2011-12-21 | 泸州品创科技有限公司 | Method for measuring fermented grain temperature during fermentation |
| CN102401704A (en) * | 2010-09-07 | 2012-04-04 | 杭州科宏仪器仪表有限公司 | Full-automatic calibration system for dial thermometer |
| CN104034447A (en) * | 2014-05-27 | 2014-09-10 | 安徽省计量科学研究院 | Standard device for calibrating dry-type temperature calibrator |
| CN104316220A (en) * | 2014-10-15 | 2015-01-28 | 聊城大学 | Automatic mercury thermometer calibration method based on machine vision |
| CN106017705A (en) * | 2016-05-11 | 2016-10-12 | 红旗仪表（长兴）有限公司 | Marking device of pointer type thermometer dial plate and generating method for dial plate |
| CN106382996A (en) * | 2016-11-29 | 2017-02-08 | 东北石油大学 | Temperature automatic detection device based on LabVIEW and automatic testing method adopting the same |
| CN109708780A (en) * | 2018-12-24 | 2019-05-03 | 长沙丰灼通讯科技有限公司 | A kind of high-precision fiducial temperature acquisition device and its method |
| CN112113677A (en) * | 2020-08-21 | 2020-12-22 | 浙江英洛华磁业有限公司 | Neodymium iron boron smelting temperature measuring device and method |
| CN113916935A (en) * | 2021-11-23 | 2022-01-11 | 南京市计量监督检测院 | Constant-temperature oil groove for door and window thermal insulation performance detection device and calibration method |
| CN114460074A (en) * | 2020-12-28 | 2022-05-10 | 湖南博隆矿业开发有限公司 | Ore image acquisition device |
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| CN109357695A (en) * | 2018-09-07 | 2019-02-19 | 中国计量科学研究院 | A kind of thermohygrometer automated detection system |
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2007
- 2007-11-30 CN CN2007101785042A patent/CN101183031B/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949746A (en) * | 2010-08-30 | 2011-01-19 | 中国人民解放军后勤工程学院 | Automatic calibration method of visual thermometer and automatic thermometer calibrator |
| CN101949746B (en) * | 2010-08-30 | 2011-12-28 | 中国人民解放军后勤工程学院 | Automatic calibration method of visual thermometer and automatic thermometer calibrator |
| CN102401704A (en) * | 2010-09-07 | 2012-04-04 | 杭州科宏仪器仪表有限公司 | Full-automatic calibration system for dial thermometer |
| CN102401704B (en) * | 2010-09-07 | 2013-09-18 | 杭州科宏仪器仪表有限公司 | Full-automatic calibration system for dial thermometer |
| CN102288327A (en) * | 2011-04-26 | 2011-12-21 | 泸州品创科技有限公司 | Method for measuring fermented grain temperature during fermentation |
| CN104034447A (en) * | 2014-05-27 | 2014-09-10 | 安徽省计量科学研究院 | Standard device for calibrating dry-type temperature calibrator |
| CN104316220B (en) * | 2014-10-15 | 2017-01-18 | 聊城大学 | Automatic mercury thermometer calibration method based on machine vision |
| CN104316220A (en) * | 2014-10-15 | 2015-01-28 | 聊城大学 | Automatic mercury thermometer calibration method based on machine vision |
| CN106017705A (en) * | 2016-05-11 | 2016-10-12 | 红旗仪表（长兴）有限公司 | Marking device of pointer type thermometer dial plate and generating method for dial plate |
| CN106382996A (en) * | 2016-11-29 | 2017-02-08 | 东北石油大学 | Temperature automatic detection device based on LabVIEW and automatic testing method adopting the same |
| CN109708780A (en) * | 2018-12-24 | 2019-05-03 | 长沙丰灼通讯科技有限公司 | A kind of high-precision fiducial temperature acquisition device and its method |
| CN109708780B (en) * | 2018-12-24 | 2020-09-29 | 长沙丰灼通讯科技有限公司 | High-precision reference temperature acquisition device and method thereof |
| CN112113677A (en) * | 2020-08-21 | 2020-12-22 | 浙江英洛华磁业有限公司 | Neodymium iron boron smelting temperature measuring device and method |
| CN114460074A (en) * | 2020-12-28 | 2022-05-10 | 湖南博隆矿业开发有限公司 | Ore image acquisition device |
| CN114460074B (en) * | 2020-12-28 | 2024-04-26 | 湖南博隆矿业开发有限公司 | Ore image acquisition device |
| CN113916935A (en) * | 2021-11-23 | 2022-01-11 | 南京市计量监督检测院 | Constant-temperature oil groove for door and window thermal insulation performance detection device and calibration method |
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|---|---|
| CN101183031B (en) | 2010-06-30 |
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