CN109199436A - Ultrasonic height measuring instrument and height correction method - Google Patents
Ultrasonic height measuring instrument and height correction method Download PDFInfo
- Publication number
- CN109199436A CN109199436A CN201710520133.5A CN201710520133A CN109199436A CN 109199436 A CN109199436 A CN 109199436A CN 201710520133 A CN201710520133 A CN 201710520133A CN 109199436 A CN109199436 A CN 109199436A
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- China
- Prior art keywords
- height
- indicia patterns
- ultrasonic
- measuring instrument
- down rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/58—Testing, adjusting or calibrating the diagnostic device
Abstract
A kind of ultrasonic height measuring instrument height correction method of the present invention, ultrasonic height measuring instrument include up-and-down rod, the standing table positioned at the ultrasonic sensor on up-and-down rod top and positioned at up-and-down rod bottom end, and standing table surface is equipped with indicia patterns；Up-and-down rod top is additionally provided with an image procossing and height correction device, before testing, it takes pictures to indicia patterns, and the lines interested in indicia patterns obtained and the length varying value between the two interested in the standard indicia patterns that prestore are calculated, and then be modified according to height of the length varying value to ultrasonic sensor to standing table surface.Visual identification technology is introduced into ultrasonic height measuring instrument by the present invention, there is some linear between the two with the variation of up-and-down rod absolute altitude using standing table surface markers pattern-information variation in image, to be modified to up-and-down rod absolute altitude.Using the technical program, ultrasonic height measurement error can be eliminated.
Description
Technical field
The present invention relates to physical examinations field, in particular to a kind of ultrasonic height measuring instrument and measurement method.
Background technique
With improving to national physique detection demand, height measurement more and more uses the ultrasound based on ultrasonic distance measurement
Wave instrument for measuring height is realized.Ultrasonic height measuring instrument, in order to guarantee the accuracy of measurement, needs to guarantee to surpass when measuring
The physical distance of sonic sensor to measurement standing table remains unchanged, so, ultrasonic height measuring instrument generally has one to consolidate
The up-and-down rod of measured length guarantees that the ultrasonic sensor positioned at ultrasonic height measuring instrument top arrives at a station using this root up-and-down rod
The physical distance of vertical platform is constant.
But due to installation or structural deformation etc., up-and-down rod is absolute in traditional ultrasonic height measuring instrument
Physical height can change in actual use, to will cause height measurement error, indeterminable problem occur.
Summary of the invention
The present invention problem big for existing ultrasonic height measuring instrument test error provides a kind of ultrasonic height measurement
Instrument and height correction method.
A kind of ultrasonic height measuring instrument of the present invention, including up-and-down rod, positioned at up-and-down rod top ultrasonic sensor and
Standing table positioned at up-and-down rod bottom end, standing table surface are equipped with indicia patterns；Up-and-down rod top is additionally provided with an image procossing and height
Corrector is spent, before testing, is taken pictures to the indicia patterns, and calculate the lines of interest in indicia patterns obtained
Length varying value between the two interested in item and the standard indicia patterns prestored, and then according to length varying value to ultrasonic wave
The height on sensor to standing table surface is modified.
Further, indicia patterns are square.
Further, identification point is respectively equipped on four angles of indicia patterns square.
Further, lines interested are that four identification points are connected the square diagonal line constituted in indicia patterns.
The present invention also provides a kind of ultrasonic height measuring instrument height correction methods, if using such as preceding ultrasonic wave body
Height measuring instrument, step include:
Before S1, test, take pictures to the indicia patterns on up-and-down rod bottom end standing table surface；
Lines interested in S2, the obtained indicia patterns of extraction；
S3, lines interested in indicia patterns obtained and the lines interested two in the standard indicia patterns that prestore are calculated
Length varying value between person；
S4, it is modified according to height of the length varying value to ultrasonic sensor to standing table surface.
Further, indicia patterns are square in step S1.
Further, identification point is respectively equipped on four angles of indicia patterns square in step S1.
Further, lines interested are diagonal for the connected square constituted of four identification points in indicia patterns in step S1
Line.
The beneficial effects of the present invention are: the present invention provides ultrasonic height measuring instrument and height correction method, the present invention will
Visual identification technology is introduced into ultrasonic height measuring instrument, using standing table surface markers pattern-information variation in image and directly
There is some linear in the variation of upright bar absolute altitude, to be modified to up-and-down rod absolute altitude between the two.Using this skill
Art scheme can eliminate ultrasonic height measuring instrument and reinstall the measurement error that the reasons such as rear and device structure deformation generate,
To improve device measuring precision.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein
Fig. 1 is ultrasonic height measuring instrument structural schematic diagram of the present invention；
Fig. 2 is standing table surface markers pattern schematic diagram in ultrasonic height measuring instrument of the present invention；
Fig. 3 is ultrasonic height measuring instrument height correction method flow diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of ultrasonic height measuring instrument of the present invention, including up-and-down rod 01, ultrasonic sensor 03, surface are equipped with label figure
The standing table 02 and image procossing and height correction device 04 of case.Wherein, ultrasonic sensor 03, image procossing and height correction device
04 in the top of up-and-down rod 01, standing table 02 is located at 01 bottom end of up-and-down rod for position, and when test, tester station is on 02 surface of standing table.
Before test, image procossing and height correction device 04 positioned at 01 top of up-and-down rod, to the label on 02 surface of standing table
Pattern is taken pictures, calculate lines interested in indicia patterns obtained with it is interested in the standard indicia patterns that prestore
Length varying value between the two, and then carried out according to height of the length varying value to ultrasonic sensor 03 to 02 surface of standing table
Amendment.
Ultrasonic height measuring instrument in factory before use, can be demarcated to equipment, in calibration process, image procossing and height
Degree corrector can take pictures to the indicia patterns on standing table surface, and indicia patterns image obtained is as standard indicia patterns
It is stored in image procossing and height correction device.
Ultrasonic height measuring instrument when in use, if because installation or structural deformation, will lead to the exhausted of up-and-down rod
To height, i.e., the height of the ultrasonic sensor on up-and-down rod top to standing table will change, this change will result in
Height measurement error.And when the absolute physical of up-and-down rod height changes, image procossing and height correction device are clapped again
Standing table on label pattern-information will because of absolute altitude variation and occur accordingly to change.Then before testing, at image
Reason and height correction device take pictures to the indicia patterns on standing table surface.
The shape of indicia patterns, which can be rectangle, square etc. and can be, leads to indicia patterns because height of taking pictures is different
In certain line lengths the shapes of significant changes occurs.In the present embodiment, the shape of indicia patterns is square.
Because of the variation for height of taking pictures, mark pattern-information that can occur accordingly to change on standing table, herein, we define
The pattern-information to change in indicia patterns is lines interested.Therefore, it as long as meeting the variation because of height of taking pictures, stands
The pattern-information accordingly changed can occur on platform in indicia patterns, can be lines interested.In the present embodiment, interested
Lines are square the diagonal line in indicia patterns.
It then needs to calculate cornerwise length below.For convenience of calculating, in the present embodiment, indicia patterns square
Four angles on be respectively equipped with identification point.Fig. 2, image procossing and height correction device is please referred to carry out square indicia pattern A
It takes pictures, extracts the identification point P on tetra- angles indicia patterns A1、P2、P3、P4, then calculate the coordinate of this four identification points
(define four identification points coordinate be Pn={ PXn, PYn }, n=1 ... 4), then two diagonal line Dis1 of indicia patterns A and
The length value of Dis2 is respectively as follows:
Dis1 = SQRT((PX1 – PX3)2 + (PY1 – PY3)2)
Dis2 = SQRT((PX2 – PX4)2 + (PY2 – PY4)2)
Continue average value Dis, Dis=(Dis1+Dis2)/2 of calculating both Dis1 and Dis2 length.Ultrasonic height
For measuring instrument in factory before use, can demarcate to equipment, image procossing and height correction device can be to the labels on standing table surface
Pattern is taken pictures, and a standard indicia patterns image is obtained.By image procossing, to the catercorner length of standard indicia patterns
It is calculated, obtains the average value of the sum of its two catercorner length, be denoted as the reference of MDis(calculating process above, herein no longer
It repeats).
Calculate the variation of Dis and MDis length value between the two.According to statistics, up-and-down rod top between standing table absolutely
Highly change y, then measures the mean variation x of the sum of two diagonal lines in square indicia pattern, accordingly, can obtain
It to the relationship between y and x, is denoted as: y=kx+c.According to the data that statistics obtains, above-mentioned linear relation is utilized, so that it may according to
The changing value of standing table surface squares two catercorner lengths of identification pattern, to the ultrasonic wave on ultrasonic height measuring instrument top
The absolute altitude value on sensor device to standing table surface is modified, to improve the measuring accuracy of ultrasonic height measuring instrument.
Using ultrasonic height measuring instrument provided by the invention, Visual identification technology is introduced into ultrasonic height measurement
In instrument, there is a constant linear pass between the two using the variation of standing table surface markers pattern-information and the variation of up-and-down rod absolute altitude
System, to be modified to up-and-down rod absolute altitude.Using the technical program, ultrasonic height measuring instrument can be eliminated and pacified again
After dress and measurement error that the reasons such as device structure deformation generate, to improve device measuring precision.
Fig. 3 is please referred to, the present invention also provides a kind of ultrasonic height measuring instrument height correction methods, using above-mentioned ultrasound
Wave instrument for measuring height, step include
Before S1, test, take pictures to the indicia patterns on up-and-down rod bottom end standing table surface；
Before test, image and processing height correction device positioned at up-and-down rod top clap the indicia patterns on standing table surface
According to calculating lines interested in indicia patterns obtained and the length between the two interested in the standard indicia patterns that prestore
Changing value is spent, and then is modified according to height of the length varying value to ultrasonic sensor to standing table surface.
Ultrasonic height measuring instrument in factory before use, can be demarcated to equipment, in calibration process, image procossing and height
Degree corrector can take pictures to the indicia patterns on standing table surface, and indicia patterns image obtained is as standard indicia patterns
It is stored in image procossing and height correction device.
Ultrasonic height measuring instrument when in use, if because installation or structural deformation, will lead to the exhausted of up-and-down rod
To physical height, i.e. the height of the ultrasonic sensor on up-and-down rod top to standing table will change, this change will
Cause height measurement error.And when the absolute physical of up-and-down rod height changes, image procossing and height correction device are again
On the standing table clapped mark pattern-information will because of absolute altitude variation and occur accordingly to change.Then before testing, scheme
As processing and height correction device take pictures to the indicia patterns on standing table surface.
Lines interested in S2, the obtained indicia patterns of extraction；
The shape of indicia patterns, which can be rectangle, square etc. and can be, leads to certain in indicia patterns because height of taking pictures is different
The shape of significant change occurs for a little line lengths.In the present embodiment, the shape of indicia patterns is square.
Because of the variation for height of taking pictures, mark pattern-information that can occur accordingly to change on standing table, herein, we define
The pattern-information to change in indicia patterns is lines interested.Therefore, it as long as meeting the variation because of height of taking pictures, stands
The pattern-information accordingly changed can occur on platform in indicia patterns, can be lines interested.In the present embodiment, interested
Lines are square the diagonal line in indicia patterns.
S3, lines interested in indicia patterns obtained and the lines of interest in the standard indicia patterns that prestore are calculated
The length varying value of item between the two；
Figure is please referred to, to lines interested in indicia patterns, i.e., cornerwise length is calculated.For convenience of calculating, this implementation
In example, identification point is respectively equipped on four angles of indicia patterns square.Please refer to Fig. 2, image procossing and height correction device pair
Square indicia pattern A takes pictures, and extracts the identification point P on tetra- angles indicia patterns A1、P2、P3、P4, then calculate
This four identification points coordinate (coordinate for defining four identification points is Pn={ PXn, PYn }, n=1 ... 4), then indicia patterns
The length value of A two diagonal lines Dis1 and Dis2 are respectively as follows:
Dis1 = SQRT((PX1 – PX3)2 + (PY1 – PY3)2)
Dis2 = SQRT((PX2 – PX4)2 + (PY2 – PY4)2)
Continue average value Dis, Dis=(Dis1+Dis2)/2 of calculating both Dis1 and Dis2 length.Ultrasonic height
For measuring instrument in factory before use, can demarcate to equipment, image procossing and height correction device can be to the labels on standing table surface
Pattern is taken pictures, and a standard indicia patterns image is obtained.By image procossing, to the catercorner length of standard indicia patterns
It is calculated, obtains the average value of the sum of its two catercorner length, be denoted as the reference of MDis(calculating process above, herein no longer
It repeats).
S4, it is modified according to height of the length varying value to ultrasonic sensor to standing table surface.
Calculate the variation of Dis and MDis length value between the two.According to statistics, up-and-down rod top between standing table absolutely
Highly change y, then measures the mean variation x of the sum of two diagonal lines in square indicia pattern, accordingly, can obtain
It to the relationship between y and x, is denoted as: y=kx+c.According to the data that statistics obtains, above-mentioned linear relation is utilized, so that it may according to
The changing value of standing table surface squares two catercorner lengths of identification pattern, to the ultrasonic wave on ultrasonic height measuring instrument top
The absolute altitude value on sensor device to standing table surface is modified, to improve the measuring accuracy of ultrasonic height measuring instrument.
Using ultrasonic height measuring instrument height correction method provided by the invention, Visual identification technology is introduced into super
In sound wave instrument for measuring height, both the variation of standing table surface markers pattern-information and the variation of up-and-down rod absolute altitude in image are utilized
Between there are some linears, to be modified to up-and-down rod absolute altitude.Using the technical program, ultrasonic wave can be eliminated
Height-gauge reinstalls the measurement error that the reasons such as rear and device structure deformation generate, to improve device measuring precision.
The foregoing is merely exemplary embodiment of the present invention, are not intended to limit scope of patent protection of the invention, all
It is to be applied directly or indirectly in it using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content
His relevant technical field, is included within the scope of the present invention.
Claims (8)
1. a kind of ultrasonic height measuring instrument, including up-and-down rod, positioned at the ultrasonic sensor on up-and-down rod top and positioned at upright
The standing table of bar bottom end, it is characterised in that:
The standing table surface is equipped with indicia patterns；
The up-and-down rod top is additionally provided with an image procossing and height correction device, before testing, carries out to the indicia patterns
Take pictures, and calculate the lines interested in indicia patterns obtained in the standard indicia patterns that prestore it is interested between the two
Length varying value, and then be modified according to height of the length varying value to ultrasonic sensor to standing table surface.
2. ultrasonic height measuring instrument according to claim 1, it is characterised in that: the indicia patterns are square.
3. ultrasonic height measuring instrument according to claim 2, it is characterised in that: four of the indicia patterns square
Identification point is respectively equipped on angle.
4. ultrasonic height measuring instrument according to claim 3, it is characterised in that: lines interested in the indicia patterns
For the connected square diagonal line constituted of four identification points.
5. a kind of ultrasonic height measuring instrument height correction method is measured using ultrasonic height as claimed in claims 1-5
Instrument, step include:
Before S1, test, take pictures to the indicia patterns on up-and-down rod bottom end standing table surface；
Lines interested in S2, the obtained indicia patterns of extraction；
S3, lines interested in indicia patterns obtained and the lines interested two in the standard indicia patterns that prestore are calculated
Length varying value between person；
S4, it is modified according to height of the length varying value to ultrasonic sensor to standing table surface.
6. ultrasonic height measuring instrument height correction method according to claim 5, it is characterised in that: in the step S1
Indicia patterns are square.
7. ultrasonic height measuring instrument height correction method according to claim 6, it is characterised in that: in the step S1
Identification point is respectively equipped on four angles of indicia patterns square.
8. ultrasonic height measuring instrument height correction method according to claim 7, it is characterised in that: in the step S1
Lines interested are that four identification points are connected the square diagonal line constituted in indicia patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520133.5A CN109199436A (en) | 2017-06-30 | 2017-06-30 | Ultrasonic height measuring instrument and height correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520133.5A CN109199436A (en) | 2017-06-30 | 2017-06-30 | Ultrasonic height measuring instrument and height correction method |
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| Publication Number | Publication Date |
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| CN109199436A true CN109199436A (en) | 2019-01-15 |
Family
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| CN201710520133.5A Pending CN109199436A (en) | 2017-06-30 | 2017-06-30 | Ultrasonic height measuring instrument and height correction method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155246A1 (en) * | 2004-01-20 | 2005-07-21 | Tanita | Height measuring apparatus and bioinstrumentation apparatus with height measuring device |
| US6982929B2 (en) * | 2001-12-04 | 2006-01-03 | Disney Enterprises, Inc. | Height measurement method and apparatus |
| CN1883396A (en) * | 2006-06-26 | 2006-12-27 | 王秀丽 | Ultrasonic two-dimensional human body measurement apparatus and measurement method thereof |
| CN201977794U (en) * | 2010-12-10 | 2011-09-21 | 上海银晨智能识别科技有限公司 | Automatic height measuring system |
| CN103940339A (en) * | 2014-05-08 | 2014-07-23 | 东莞市天勤仪器有限公司 | Quick correction method of image measurement instrument |
| CN104720814A (en) * | 2013-12-19 | 2015-06-24 | 天津市天大百睿精密仪器技术有限公司 | Non-contact height automatic measuring system and non-contact height automatic measuring method |
| CN105043271A (en) * | 2015-08-06 | 2015-11-11 | 宁波市北仑海伯精密机械制造有限公司 | Method and device for length measurement |
-
2017
- 2017-06-30 CN CN201710520133.5A patent/CN109199436A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6982929B2 (en) * | 2001-12-04 | 2006-01-03 | Disney Enterprises, Inc. | Height measurement method and apparatus |
| US20050155246A1 (en) * | 2004-01-20 | 2005-07-21 | Tanita | Height measuring apparatus and bioinstrumentation apparatus with height measuring device |
| CN1883396A (en) * | 2006-06-26 | 2006-12-27 | 王秀丽 | Ultrasonic two-dimensional human body measurement apparatus and measurement method thereof |
| CN201977794U (en) * | 2010-12-10 | 2011-09-21 | 上海银晨智能识别科技有限公司 | Automatic height measuring system |
| CN104720814A (en) * | 2013-12-19 | 2015-06-24 | 天津市天大百睿精密仪器技术有限公司 | Non-contact height automatic measuring system and non-contact height automatic measuring method |
| CN103940339A (en) * | 2014-05-08 | 2014-07-23 | 东莞市天勤仪器有限公司 | Quick correction method of image measurement instrument |
| CN105043271A (en) * | 2015-08-06 | 2015-11-11 | 宁波市北仑海伯精密机械制造有限公司 | Method and device for length measurement |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518057, room 4, building 02, Fangda building, South twelve Road, Nanshan District science and technology, Shenzhen, Guangdong Applicant after: Shenzhen Taishan Sports Technology Co.,Ltd. Address before: 518057, room 4, building 02, Fangda building, South twelve Road, Nanshan District science and technology, Shenzhen, Guangdong Applicant before: SHENZHEN TAISHAN SPORTS TECHNOLOGY Corp.,Ltd. |
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Application publication date: 20190115 |