CN204115827U - The automatic calibrating instrument of container capacity - Google Patents

The automatic calibrating instrument of container capacity Download PDF

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Publication number
CN204115827U
CN204115827U CN201420484582.0U CN201420484582U CN204115827U CN 204115827 U CN204115827 U CN 204115827U CN 201420484582 U CN201420484582 U CN 201420484582U CN 204115827 U CN204115827 U CN 204115827U
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China
Prior art keywords
container
control device
liquid
feeding tube
camera head
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CN201420484582.0U
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江湘津
荀其宁
李祖祥
李红丽
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JINSHI PETROCHEMICAL INSTRUMENT CO Ltd
SHENZHEN JINSHI PETROCHEMICAL INSTRUMENT CO Ltd
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JINSHI PETROCHEMICAL INSTRUMENT CO Ltd
SHENZHEN JINSHI PETROCHEMICAL INSTRUMENT CO Ltd
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Abstract

An automatic calibrating instrument for container capacity, the liquid-feeding tube that it adopts comprises two and is positioned at the ullage of container all the time by the control device control liquid-feeding tube I of flow and one end of liquid-feeding tube II, described liquid-feeding tube I and liquid-feeding tube II, and container is positioned on weighing device; Camera head for taking metal line and container graticule picture in container is connected to control device, and weighing device is also connected to control device.Described control device is also connected with the camera head apparatus for adjusting position for regulating camera head position.Described control device also comprises the recognition device for automatically identifying metal line and container graticule position; Described control device also comprises the computing module of the difference for calculating the actual certified value of container and actual certified value and nominal value.The utility model avoids the personal error in metering process, accurate measurement, and verification process simplifies, and alleviates hand labor intensity, is beneficial to and formulates unified variable.

Description

The automatic calibrating instrument of container capacity
Technical field
The utility model relates to automatic gauge field, particularly relates to a kind of automatic calibrating instrument of container capacity.
Background technology
Conventional measuring container is often referred to the volumetric glass of use for laboratory, and its kind is very many, comprises transfer pipet, volumetric flask, buret, graduated cylinder and measuring cup etc.Container due to metering uses comparatively frequent, and the long-term corrosion of reaction liquid in container can widen the actual value of container and the gap of nominal value gradually, this also increases the systematic error of measuring container; When systematic error adds that personal error is enough to have influence on experiment conclusion, just have to change measuring container.
In order to overcome the defect of above-mentioned measuring container, reduce the systematic error affecting experiment conclusion, country has formulated " conventional volumetric glass vertification regulation ", and wherein defining volumetric glass should regularly correct as far as possible.Comparatively conventional is adopt weight method to examine and determine, and the correction of volumetric glass all by weighing measuring device and load or the weight W of outflow water, then according to the density d of water under this specified temp, calculates the volume V of measuring device, V=W/d (ml).The sign volume of V and volumetric glass compares, and its error should be less than the numerical value that standard specifies.
Above-mentioned vertification regulation has formulated complicated artificial calibrating operation steps, and such as, when measuring volumetric flask and measuring into formula weight cylinder, its operation steps is as follows:
1) the tested measuring device cleaning also drying process weighs;
2) inject purified water in graticule place or tested reticule, cover lid immediately, weighs the gross weight of measuring device and water, deducts the weight of sky measuring device, obtain the weight (m) of purified water;
3) thermometer is inserted in tested measuring device, measure the temperature of water, accuracy of reading to 0.1 DEG C;
4) calculate the actual capacity of tested measuring device when standard temperature 20 DEG C according to computing formula, carry out error calculation simultaneously.
And regulation calibrating grade, actual volume should be less than franchise with the difference indicating volume.The franchise of to be the franchise of 0.10ml, 50ml be 0.05ml, the 25ml of the franchise as the volumetric flask 100ml of first-class is ± 0.03ml, is all about the per mille of volume.
Above-mentioned verification step automaticity is very low, needs manually to inject purified water, cannot meet the needs of calibrating in enormous quantities, and the observed reading of above-mentioned verification step also heavy dependence human eye, manually records statistics and calculates, and also can cause the personal error of calibrating.In Application in Chemical Engineering field, the harmful effect that this error causes is very serious often.
Utility model content
The purpose of this utility model is to provide a kind of automatic calibrating instrument of small container capacity, it avoid the personal error in metering process, makes accurate measurement, and verification process simplifies, and alleviates artificial labour intensity, is beneficial to and formulates unified variable.
The utility model is achieved like this, it comprises container and weighing device, it is characterized in that, it also comprises camera head, control device and liquid-feeding tube, described liquid-feeding tube comprises two are controlled flow liquid-feeding tube I and liquid-feeding tube II by control device, one end of described liquid-feeding tube I and liquid-feeding tube II is positioned at the ullage of container all the time, and container is positioned on weighing device; Camera head for taking metal line and container graticule picture in container is connected to control device, and weighing device is also connected to control device; Described control device is computing machine.
Further, described control device is also connected with the camera head apparatus for adjusting position for regulating camera head position.Described control device also comprises the recognition device for automatically identifying metal line and container graticule position; Described control device also comprises the computing module of the difference for calculating the actual certified value of container and actual certified value and nominal value.
When examining and determine, the graticule of container looked squarely by the camera lens of described camera head.
Preferably, described control device is also connected with the printing equipment for printing described container calibrating data statistics result.
The calibration method of the automatic calibrating instrument of said vesse capacity, described calibration method comprises the following steps:
(1) weighing container net weight: first put container to be examined and determine on the skin clean oven dry, is then placed on weighing device by container, and after device determination data to be weighed is stable, control device controls weighing device and resets measurement data;
(2) delimitation container graticule is identified: control device instruction camera head apparatus for adjusting position drives camera head to looking squarely container graticule position, by camera head by container image input to the video card in control device, analyzed by recognition device, automatic or manual delimit graticule position over the display;
(3) to Rapid Freon-feeding in container: control device first controls liquid-feeding tube I and adds purified water fast in container, and at this moment weight data is constantly passed to control device by weighing device; By camera head identification, when metal line and graticule close, or when the volume of purified water flowing through liquid-feeding tube I accounts for more than 95% of container nominal volume, control device stops liquid-feeding tube I to work automatically;
(4) accurate liquid feeding in container: control device controls liquid-feeding tube II again to start accurately to add purified water, along with the carrying out of liquid feeding process, when camera head identification metal line overlaps with container graticule, control device automatically controls liquid-feeding tube II immediately and stops liquid feeding;
(5) calculate and statistics verification result data: the weight m that now weighing device takes added up by control device, according to known purified water density, the purified water volume generated in container is calculated by computing module, namely the actual volume of container is obtained, and do difference with nominal volume, generate the data form of statistics, printed by printing equipment.
The beneficial effects of the utility model are: the utility model is mainly applicable to automatic gauge, greatly can improve the deficiency of China in the instrument calculating correction values of robotization; The utility model changes tradition by people's metering method soon, and it is the Innovation and reform to measurement technology, has very meaning to the accuracy of metering.The utility model camera head substitutes the eye observation of people, calculates and substitutes artificial calculating, carry out full automatic metering to volume of a container with control device.Control device calculates the difference with container nominal value automatically, and generating report forms printout, whole test process without the need to manual intervention, automatic Verification.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In the drawings, 1, container 2, camera head 3, liquid-feeding tube I 4, liquid-feeding tube II 5, weighing device 6, control device 7, metal line 8, graticule 9, camera head apparatus for adjusting position 10, printing equipment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
As shown in Figure 1, the utility model is achieved like this, it comprises container 1 and weighing device 5, it also comprises camera head 2, control device 6 and liquid-feeding tube, described liquid-feeding tube comprises two are controlled flow liquid-feeding tube I3 and liquid-feeding tube II4 by control device, the rotating speed that such as can control by control device 6 pump be connected with liquid-feeding tube realizes, and the valve opening and closing degree that can also be controlled on liquid-feeding tube by control device 6 is realized.One end of described liquid-feeding tube I3 and liquid-feeding tube II4 is positioned at the ullage of container 1 all the time, and container 1 is positioned on weighing device 5; Camera head 2 for taking metal line 7 in container 1 and graticule 8 picture is connected to control device 6, and weighing device 5 is also connected to control device 6; Camera head 2 is video camera, and weighing device 5 is electronic balance.
And, described control device is also connected with the camera head apparatus for adjusting position 9 for regulating camera head position, control device as required, to camera head apparatus for adjusting position signal, the height of camera head and horizontal relative position are changed, until the graticule of container looked squarely by the camera lens of camera head.Described control device also comprises the recognition device for automatically identifying metal line and container graticule position; Described recognition device is software based on image recognition technology or device, and the picture that it can be photographed by camera head identifies metal line 7 and graticule 8 automatically.Described control device 6 also comprises the computing module of the difference for calculating the actual certified value of container and actual certified value and nominal value, computing module is based on the computing formula of weight method, automatically by measuring the weight W of monitoring liquid, again according to the density d of water under this specified temp, calculate the volume V of measuring device, V=W/d (ml).The nominal volume generating V and container compares, and generates the list data with its difference corresponding.Described control device is also connected with the printing equipment 10 for printing described container calibrating data statistics result, and printing equipment 10 can the above-mentioned data of printing speed, such as, print in table form, facilitate calibrating person to determine the error of container 1 in time, demarcate its grade.
Such based on verification step of the present utility model, such as, when examining and determine graduated cylinder,
(1) first put graduated cylinder on the skin clean oven dry, be then placed on weighing device by graduated cylinder, after device determination data to be weighed is stable, control device controls weighing device and resets measurement data;
(2) control device instruction camera head apparatus for adjusting position drives camera head to looking squarely graduated cylinder graticule position, by camera head by graduated cylinder image input to control device video card, analyzed by recognition device, over the display automatically (or manually) delimit graticule position;
(3) control device first controls liquid-feeding tube I and in graduated cylinder, adds purified water fast, and at this moment weight data is constantly passed to control device by weighing device; By camera head identification, when metal line and graticule close, or when the volume of purified water flowing through liquid-feeding tube I accounts for more than 95% of graduated cylinder nominal volume, control device stops liquid-feeding tube I to work automatically;
(4) control device controls liquid-feeding tube II4 again and starts accurately to add purified water, and along with the carrying out of liquid feeding process, when camera head identification metal line overlaps with container graticule, control device automatically controls liquid-feeding tube II4 immediately and stops liquid feeding;
(5) the weight m that now weighing device takes added up by control device, according to known purified water density, calculated the purified water volume generated in graduated cylinder, namely obtain the actual volume of graduated cylinder, and do difference with nominal volume by computing module, generate form;
(6) examine and determine according to above-mentioned steps the data that nominal value is the graduated cylinder of 10ml, 25ml, 50ml and 100ml continuously, its calibrating data genaration form is as shown in the table:
By control device, form is sent to printing equipment, generate papery calibrating form.And control device of the present utility model based on above-mentioned principle, can complete the mensuration of several containers simultaneously, only need the number increasing camera head, weighing device and liquid-feeding tube.

Claims (6)

1. the automatic calibrating instrument of a container capacity, it comprises container and weighing device, it is characterized in that, it also comprises camera head, control device and liquid-feeding tube, described liquid-feeding tube comprises two are controlled flow liquid-feeding tube I and liquid-feeding tube II by control device, one end of described liquid-feeding tube I and liquid-feeding tube II is positioned at the ullage of container all the time, and container is positioned on weighing device; Camera head for taking metal line and container graticule picture in container is connected to control device, and weighing device is also connected to control device.
2. the automatic calibrating instrument of container capacity as claimed in claim 1, it is characterized in that, described control device is also connected with the camera head apparatus for adjusting position for regulating camera head position.
3. the automatic calibrating instrument of container capacity as claimed in claim 1 or 2, it is characterized in that, the graticule of container looked squarely by the camera lens of described camera head.
4. the automatic calibrating instrument of container capacity as claimed in claim 1 or 2, is characterized in that, described control device is also connected with the printing equipment for printing described container calibrating data statistics result.
5. the automatic calibrating instrument of container capacity as claimed in claim 1 or 2, it is characterized in that, described control device also comprises the recognition device for automatically identifying metal line and container graticule position.
6. the automatic calibrating instrument of container capacity as claimed in claim 1 or 2, it is characterized in that, described control device also comprises the computing module of the difference for calculating the actual certified value of container and actual certified value and nominal value.
CN201420484582.0U 2014-08-26 2014-08-26 The automatic calibrating instrument of container capacity Active CN204115827U (en)

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CN201420484582.0U CN204115827U (en) 2014-08-26 2014-08-26 The automatic calibrating instrument of container capacity

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Application Number Priority Date Filing Date Title
CN201420484582.0U CN204115827U (en) 2014-08-26 2014-08-26 The automatic calibrating instrument of container capacity

Publications (1)

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CN204115827U true CN204115827U (en) 2015-01-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180878A (en) * 2014-08-26 2014-12-03 深圳市湘津石仪器有限公司 Container capacity automatic verification device and verification method thereof
CN110715712A (en) * 2019-11-14 2020-01-21 北京市计量检测科学研究院 Full-automatic capacity calibration device for small-capacity container and use method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180878A (en) * 2014-08-26 2014-12-03 深圳市湘津石仪器有限公司 Container capacity automatic verification device and verification method thereof
CN110715712A (en) * 2019-11-14 2020-01-21 北京市计量检测科学研究院 Full-automatic capacity calibration device for small-capacity container and use method thereof

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