CN203758586U - Control equipment for aligning scale mark and liquid level - Google Patents
Control equipment for aligning scale mark and liquid level Download PDFInfo
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- CN203758586U CN203758586U CN201420065855.8U CN201420065855U CN203758586U CN 203758586 U CN203758586 U CN 203758586U CN 201420065855 U CN201420065855 U CN 201420065855U CN 203758586 U CN203758586 U CN 203758586U
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- liquid level
- container
- scale mark
- scale
- controller
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Abstract
The utility model relates to control equipment for aligning a scale mark and a liquid level. By using the control equipment, the scale mark can be quickly and accurately adjusted and is effectively aligned with the liquid level in a verification process of a measuring instrument. By using the technical scheme, a container is filled with liquor, a vertical guide track is arranged on one side of the container and is provided with a vertical lead screw; one end of the lead screw is connected with a rotating shaft of a stepping motor; the lead screw is provided with a sliding block; clamping heads on two sides of the sliding block are placed in sliding grooves of the guide track; the sliding block slides in the up-down direction along the guide track, and is provided with a horizontal hanging platform; a downward scale indicator is hung on the hanging platform and above the container; the stepping motor is connected with the controller; and the controller is respectively connected with a liquid level sensor arranged above the container and a scale alerting signal generating device arranged on a side surface of the container. The control equipment for aligning the scale mark and the liquid level is stable and reliable in using effect and high in control precision; and quick alignment on scale marks of a measuring instrument is effectively guaranteed.
Description
Technical field
The utility model relates to measuring equipment, particularly a kind of for making scale mark aim at the opertaing device of liquid level.
Background technology
In measurement and control procedure, often run into some processes, require scale mark to aim at given level.For example national metrological verification regulations < < JJG42-2011 work is with stipulating in glass overstatement > >, when calibrating fundamental error, answer " by adjustment, overstatement being dipped on the scale that will identify, the whole groove center of aiming at well of meniscus (being near the curved liquid surface that liquid forms solid) lower edge reading ".
Conventionally, the method that scale mark is aimed at liquid level is first to rely on eye recognition meniscus position, and then the artificial scale mark of slowly adjusting, aims at the two gradually.In this process, human eye will remain on the surface level at liquid level place, and this will the person of asking for help operation be skillfully and carefully, be very easy to cause visual fatigue.Once occur that visual fatigue, human body rock, and will bring obvious error.Even skilled operating personnel, also may be because personnel's difference be introduced larger personal error, these have all affected the robotization of verification process and the accuracy of verification result.
In recent years, although some research, by image monitoring, can be carried out artificial cognition to the monitoring picture amplifying, but still cannot realize auto-alignment, control.Also some software, utilizes image recognition technology, can judge the position of scale mark, but can not identify meniscus and scale mark simultaneously, can not in kinetic measurement process, realize aiming at simultaneously and control.
Summary of the invention
For overcoming prior art deficiency, the purpose of this utility model is just to provide a kind of for making scale mark aim at the opertaing device of liquid level, can effectively solve and in calibrating (or calibration, test etc.) process of surveying instrument, how adjust quickly and accurately scale mark and guarantee that scale mark aims at liquid level, thereby reduce the problem of labour intensity, departure and reproducibility error that scale mark and liquid level alignment function bring.
The technical scheme that the utility model solves is, comprise container, guide rail, stepper motor and liquid level sensor, solution is housed in container, one side of container is equipped with vertical guide rail, vertical leading screw is housed on guide rail, one end of leading screw is connected with the rotation axis of stepper motor, slide block is housed on leading screw, the dop of slide block both sides is placed in the sliding tray of guide rail, form slide block along on guide rail, under slide construction, the suspension platform of level is housed on slide block, container top mounts downward division indicator on suspension platform, stepper motor is connected with controller, controller is connected with the scale cue generating means being contained in container side with the liquid level sensor that is contained in container top respectively.
The utility model is simple in structure, novel unique, result of use is reliable and stable, control accuracy is high, effectively guaranteed the rapid alignment of surveying instrument scale mark, prevented, because the visual determination uncertainty that resolving power of the eye is limited, long-term observation easily causes visual fatigue reason to bring is large, be not suitable for mass detection and the lower problem of automaticity, having actual using value and good economic and social profit.
Accompanying drawing explanation
Fig. 1 is the structural representation of equipment of the present utility model.
Fig. 2 be the utility model division indicator bottom article one scale mark by level, identify the schematic diagram of line.
Fig. 3 be the utility model division indicator bottom the schematic diagram aimed at original liquid level of article one scale mark.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
By Fig. 1-3, provided, the utility model comprises container, guide rail, stepper motor and liquid level sensor, it is characterized in that, solution 9 is housed in container 1, one side of container 1 is equipped with vertical guide rail 7, vertical screw mandrel 12 is housed on guide rail 7, one end of screw mandrel 12 is connected with the rotation axis of stepper motor 6, slide block 11 is housed on leading screw, the dop of slide block 11 both sides is placed in the sliding tray of guide rail, form slide block along on guide rail, under slide construction, the suspension platform 3 of level is housed on slide block 11, container top mounts downward division indicator 2 on suspension platform 3, stepper motor 6 is connected with controller 8, controller 8 is connected with the scale cue generating means 4 being contained on container 1 side with the liquid level sensor 5 that is contained in container 1 top respectively.
For guaranteeing result of use, described division indicator 2 is vertical shape and is suspended on suspension platform 3, vertical with the liquid level of solution 9;
The horizontal liquid level top that is placed in solution 9 of level identification line 10 of the transmitting terminal of described scale cue generating means 4, level identification line 10 is connected with signal generation apparatus 4 is vertical;
Described division indicator 2 is for the measurement instruments such as densitometer, alcohol meter, B or other are similarly with the measuring equipment of scale;
Described scale cue generating means 4 is that applicant is " the graduation indication line cue generating means " of " 201320695985.5 " at the application number of first to file;
The laser displacement sensor that described liquid level sensor 5 is, JS33-35D laser displacement sensor is sold by metal and stone auspicious Science and Technology Ltd. in Beijing, and its linear measurement error is not more than 0.02mm.
During use of the present utility model, comprise the following steps:
(1) erecting equipment
Equipment comprises container 1, guide rail 7, suspension platform 3, division indicator 2, liquid level sensor 5, scale cue generating means 4 and controller 8, solution 9 is housed in container 1, one side of container 1 is equipped with vertical guide rail 7, vertical screw mandrel 12 is housed on guide rail 7, one end of screw mandrel 12 is connected with the rotation axis of stepper motor 6, slide block 11 is housed on leading screw, the dop of slide block 11 both sides is placed in the sliding tray of guide rail, form slide block along on guide rail, under slide construction, the suspension platform 3 of level is housed on slide block 11, container top mounts downward division indicator 2 on suspension platform 3, stepper motor 6 is connected with controller 8, controller 8 is connected with the scale cue generating means 4 being contained on container 1 side with the liquid level sensor 5 that is contained in container 1 top respectively, controller is for receiving the signal that scale cue generating means 4 is received, read the liquid level that liquid level sensor 5 records, thereby the height and position signal and the control step motor 6 that read slide block 11 rotate the upper of control slide block, lower movement, stepper motor drives leading screw to rotate, the circular motion of leading screw is converted into the slide block that is contained on leading screw along the rectilinear motion up and down of guide rail, suspension platform level is contained on slide block, when the upper and lower traveling priority of slide block, is suspended on the also lifting thereupon of division indicator on suspension platform,
(2) start counting scale line
Manually control step motor 6 rotates, thereby drive division indicator 2 slowly to move down, when article one scale mark of division indicator 2 bottoms is identified line 10 by the level of scale cue generating means 4 settings, scale cue generating means 4 sends cue, and the sequence number of 8 pairs of scale marks of controller increases progressively counting since 1;
(3) measure original liquid level
Continuing manual control step motor 6 rotates, thereby drive division indicator 2 to continue slowly to move down, make article one scale mark of division indicator bottom slowly approach liquid level, in this process, controller 8 can identify the number of the scale mark of line 10 by record by level, by estimating, at article one scale mark and liquid level on time, the stepper motor that stops, records now slide block height and position H of living in
01, record the original liquid level Y that liquid level sensor 5 records simultaneously
01;
(4) measure raw range
Utilize controller 8 control step motor 6 reverse rotations, thereby drive division indicator 2 automatically to move up, controller often receives the scale cue that a scale cue generating means 4 sends, scale counting subtracts 1, when scale counting is reduced to 0, article one scale mark that division indicator bottom is described is aimed at level identification line again, and controller records now slide block height and position H of living in automatically
11, the stepper motor that stops, the raw range D of the level recording identification line and liquid level
1=(H
11-H
01);
Repeat above-mentioned steps 3～5 times, choose the level identification line at every turn recording and as level, identify raw range and the original liquid level of line and liquid level with the mean value D of raw range and the mean value Y of original liquid level of liquid level, and in controller, preserve these data;
(5) secondary is aimed at
Setting need to be aimed at the scale mark sequence number n of liquid level, and n is the positive integer that is less than the scale mark sum of division indicator;
Stepper motor 6 is forward rotation under the control of controller, and division indicator 2 at the uniform velocity moves downward, and when every scale mark is identified line by the level of setting, scale cue generating means sends a prompting pulse, and controller is counted the pulse receiving;
When the umber of pulse of controller accumulative total equals the sequence number n of the scale mark set, represent that this scale mark and level identify line in same level, now, controller reads slide block height and position H of living in
n;
Stepper motor 6 continues forward rotation under the control of controller, and division indicator 2 continues at the uniform velocity to move downward, slide block height and position H of living in while reading in real time each moment t with Time Controller
ntwith liquid level Y
nt, when meeting formula H
nt=H
n-D-(Y
nt-Y) time, think that scale mark aims at liquid level surface level, now can need to carry out other corresponding operatings according to controlling.
The speed at the uniform velocity moving downward in described step 5 is less than or equal to 2mm/s;
Described division indicator 2 is for the measurement instruments such as densitometer, alcohol meter, B or other are similarly with the measuring equipment of scale;
Described scale cue generating means 4 is that applicant is " the graduation indication line cue generating means " of " 201320695985.5 " at the application number of first to file;
The laser displacement sensor that described liquid level sensor 5 is, JS33-35D laser displacement sensor is sold by metal and stone auspicious Science and Technology Ltd. in Beijing, and its linear measurement error is not more than 0.02mm;
Described suspension platform 3 can be hanger bar or commercially available suspension platform.
Below in conjunction with embodiment, concrete using method of the present utility model is described in further detail:
(1) erecting equipment
Wherein, division indicator adopts densitometer, and liquid level sensor adopts metal and stone auspicious Science and Technology Ltd. in Beijing to sell JS33-35D laser displacement sensor, and suspension platform adopts hanger bar;
(2) start counting scale line
Manual control step electric machine rotation, thereby drive densitometer slowly to move down, when the level that article one scale mark of densitometer bottom is set by scale cue generating means is identified line, scale cue generating means sends cue, and controller increases progressively counting to the sequence number of scale mark since 1;
(3) measure original liquid level
Continue manual control step electric machine rotation, thereby drive densitometer to continue slowly to move down, make article one scale mark of densitometer bottom slowly approach liquid level, in this process, controller 8 can identify the number of the scale mark of line by record by level, by estimating, at article one scale mark and liquid level on time, the stepper motor that stops, records now slide block height and position H of living in
01, record the original liquid level Y that liquid level sensor records simultaneously
01;
(4) measure raw range
Utilize the reverse rotation of controller control step motor, thereby drive densitometer automatically to move up, controller often receives the scale cue that a scale cue generating means sends, scale counting subtracts 1, when scale counting is reduced to 0, article one scale mark that densitometer bottom is described is aimed at level identification line again, and controller records now slide block height and position H of living in automatically
11, the stepper motor that stops, the raw range D of the level recording identification line and liquid level
1=(H
11-H
01);
Repeat above-mentioned steps 5 times, choose the level identification line at every turn recording and as level, identify raw range and the original liquid level of line and liquid level with the mean value D of raw range and the mean value Y of original liquid level of liquid level, and in controller, preserve these data;
Primary measurement data is H
01=452.744mm, Y
01=48.753mm, H
11=455.642mm, D
1=2.898mm;
Secondary measurement data is H
01=452.730mm, Y
01=48.758mm, H
11=455.647mm, D
1=2.917mm;
Measurement data is for the third time H
01=452.733mm, Y
01=48.762mm, H
11=455.631mm, D
1=2.898mm;
The measurement data of the 4th time is H
01=452.725mm, Y
01=48.764mm, H
11=455.657mm, D
1=2.932mm;
The measurement data of the 5th time is H
01=452.726mm, Y
01=48.767mm, H
11=455.654mm, D
1=2.928mm;
Obtain mean value:
D= (2.989+2.917+2.898+2.932+2.928)/5=2.915mm
Y= (48.753+48.758+48.762+48.764+48.767)/5=48.761mm
(5) secondary is aimed at
The scale mark sequence number that setting need to be aimed at liquid level is respectively 5,25 and 35;
Stepper motor is forward rotation under the control of controller, and densitometer at the uniform velocity moves downward, and when every scale mark is identified line by the level of setting, scale cue generating means sends a prompting pulse, and controller is counted the pulse receiving;
When the umber of pulse of controller accumulative total equals the sequence number 5,25 of the scale mark set and 35 time, represent that this scale mark and level identify line in same level, now, controller reads slide block height and position of living in and is respectively H
5=450.469mm, H
25=423.920mm, H
35=410.417mm;
Stepper motor continues forward rotation under the control of controller, and densitometer continues at the uniform velocity to move downward with 1mm/s, slide block height and position H of living in while reading in real time each moment t with Time Controller
ntwith liquid level Y
nt, when meeting formula H
nt=H
n-D-(Y
nt-Y) time, think that scale mark aims at liquid level surface level, actual the data that record be on time respectively:
Y
5t=48.791mm，H
5t=447.524mm；
Y
25t=48.793mm，H
25t=420.973mm；
Y
35t=48.794mm，H
35t=407.469mm；
(6) check
Measure now densitometric residuals weight, the error of indication of bulk density meter scale mark, through with manual control under measurement result comparison, the groove error of indication result recording differs and is all not more than 1/20 scale interval.
From above-mentioned situation, when being used, aims at by measuring in advance original liquid level, raw range and secondary the utility model, and can control the scale mark that need to aim at liquid level and accurately aim at liquid level, when translational speed is not more than 2mm/s, alignment error is not more than 0.2mm; Effectively solved the alignment issues to scale mark in the process such as calibrating, calibration, test of surveying instrument, practical application through aim at liquid level in bar type densitometer, alcohol meter, B verification process, all obtain close experimental verification, working control error is less than 0.05mm; Result shows that the utility model method is reliable and stable, control accuracy is high, effectively guaranteed the rapid alignment of surveying instrument scale mark, prevented because resolving power of the eye is limited, long-term observation easily causes visual fatigue, exist visual determination uncertainty large, be not suitable for mass detection and the problem such as automaticity is lower, have actual using value and good economic and social profit.
Claims (3)
1. one kind for making scale mark aim at the opertaing device of liquid level, comprise container, guide rail, stepper motor and liquid level sensor, it is characterized in that, solution (9) is housed in container (1), one side of container (1) is equipped with vertical guide rail (7), vertical leading screw (12) is housed on guide rail (7), one end of leading screw (12) is connected with the rotation axis of stepper motor (6), slide block (11) is housed on leading screw, the dop of slide block (11) both sides is placed in the sliding tray of guide rail, form slide block along on guide rail, under slide construction, the suspension platform (3) of level is housed on slide block (11), container top mounts downward division indicator (2) on suspension platform (3), stepper motor (6) is connected with controller (8), controller (8) is connected with the scale cue generating means (4) being contained on container (1) side with the liquid level sensor (5) that is contained in container (1) top respectively.
2. according to claim 1ly for making scale mark aim at the opertaing device of liquid level, it is characterized in that, described division indicator (2) is vertical shape, and to be suspended on suspension platform (3) upper, vertical with the liquid level of solution (9).
3. according to claim 1 for making scale mark aim at the opertaing device of liquid level, it is characterized in that, the horizontal liquid level top that is placed in solution (9) of level identification line (10) of the transmitting terminal of described scale cue generating means (4), level identification line (10) and vertical being connected of signal generation apparatus (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065855.8U CN203758586U (en) | 2014-02-14 | 2014-02-14 | Control equipment for aligning scale mark and liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065855.8U CN203758586U (en) | 2014-02-14 | 2014-02-14 | Control equipment for aligning scale mark and liquid level |
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| Publication Number | Publication Date |
|---|---|
| CN203758586U true CN203758586U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065855.8U Expired - Fee Related CN203758586U (en) | 2014-02-14 | 2014-02-14 | Control equipment for aligning scale mark and liquid level |
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| Country | Link |
|---|---|
| CN (1) | CN203758586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843317A (en) * | 2017-12-12 | 2018-03-27 | 合肥中科离子医学技术装备有限公司 | A kind of reference test bar and its scaling method for the demarcation of superconducting line liquid level gauge |
-
2014
- 2014-02-14 CN CN201420065855.8U patent/CN203758586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843317A (en) * | 2017-12-12 | 2018-03-27 | 合肥中科离子医学技术装备有限公司 | A kind of reference test bar and its scaling method for the demarcation of superconducting line liquid level gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150214 |
|
| EXPY | Termination of patent right or utility model |