CN108731600A - A kind of roller type electronic ruler and its measurement method - Google Patents
A kind of roller type electronic ruler and its measurement method Download PDFInfo
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- CN108731600A CN108731600A CN201810806390.XA CN201810806390A CN108731600A CN 108731600 A CN108731600 A CN 108731600A CN 201810806390 A CN201810806390 A CN 201810806390A CN 108731600 A CN108731600 A CN 108731600A
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- Prior art keywords
- gear
- idler wheel
- measurement
- transmission gear
- roller type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention belongs to measure electronic ruler field, a kind of roller type electronic ruler is provided, including：Shell, transmission gear, measures gear, grating disc, photoelectric sensor, clear device, pcb board and power supply at idler wheel.The measurement port that idler wheel is fixed on shell carries out toe joint by transmission gear with gear is measured；Grating disc is fixed on measurement gear with one heart；Photoelectric sensor is used to incude the umber of pulse of grating disc；Pcb board is provided with data processing module, the signal for handling sensor passes；Clear device includes button and the clearing sensor being fixedly connected with the button, resets sensor and is electrically connected with pcb board.The data processing module of the present invention receives the umber of pulse that grating disc generates to obtain the fixed turnning circle for measuring gear with one heart, by the ratio between the perimeter for measuring gear and transmission gear, obtain the turnning circle i.e. turnning circle of idler wheel of transmission gear, the length of idler wheel, therefore high certainty of measurement are obtained in conjunction with the perimeter of idler wheel.
Description
Technical field
The invention belongs to measure electronic ruler field more particularly to a kind of roller type electronic ruler and its measurement method.
Background technology
In daily life, people measure object one end to the distance of the other end by measuring scale, are needed to obtain
The length data asked.But traditional measuring scale such as tape measure is when measuring, not straight enough when tape measure is stretched, reading there are error, from
And often lead to measure it is not accurate enough, in the modern society of demand precision, some do not catch up with society needs.Therefore,
People devise various electronic surveying rulers for the above problem.
In existing electronic surveying ruler, when needing to measure the length of the surface especially inner wall of irregularly shaped object, generally adopt
It is measured with the rolling of idler wheel.And the existing bigger generation of not sensitive enough the data so as to cause measurement of electronic surveying ruler sensor
Measurement error it is also bigger.In conclusion there is the technical problems of precision deficiency for existing roller type electronic measuring scale.
Invention content
The purpose of the present invention is to provide a kind of roller type electronic ruler and its measurement methods, it is intended to solve existing electronic, horological
There is the larger technical problems of precision deficiency error for gage.
To achieve the above object, in embodiment one, one aspect of the present invention provides a kind of roller type electronic ruler, including：Shell
Body, transmission gear, measures gear, grating disc, photoelectric sensor, clear device, pcb board and power supply at idler wheel；
The idler wheel is fixed on the measurement port of the shell by roller shaft, and the transmission gear is fixed on described with one heart
Idler wheel；The measurement gear carries out toe joint with the transmission gear；
The grating disc is fixed on the measurement gear with one heart；
The photoelectric sensor is used to incude the umber of pulse of the grating disc；
The pcb board is fixed in the shell, is electrically connected with the photoelectric sensor and the power supply；Institute
It states pcb board and is provided with data processing module, the signal for handling sensor passes；
The clear device includes button and the clearing sensor being fixedly connected with the button, and the button is connected in institute
It states in the corresponding trepanning of shell, the clearing sensor is electrically connected with the pcb board.
In conjunction with first embodiment, in second embodiment, infrared distance measuring device is fixed in the shell；The infrared distance measurement
Device is electrically connected with the pcb board, and includes infrared transmitter and infrared remote receiver.
In conjunction with first embodiment, in 3rd embodiment, the case top is provided with transparent display window, the display
Window fitting is fixed with the display screen to match, and the display screen is electrically connected with pcb board.
In conjunction with first embodiment, in fourth embodiment, the transmission gear and the measurements gear by switching gear into
Row toe joint.
In conjunction with first embodiment, in the 5th embodiment, the umber of pulse that the circle of the grating disc one generates is 280-300.
In conjunction with first embodiment, in sixth embodiment, the power supply is repeatable charge and discharge of the battery.
In conjunction with first embodiment, in the 7th embodiment, the idler wheel is made of anti-slip material.
In conjunction with first embodiment, in the 8th embodiment, the idler wheel side is provided with slip-resistant texture component.
In conjunction with first embodiment, in the 9th embodiment, the shell relative to being provided with the another of measurement port one end
End is provided with elastic hook, and the elastic hook is connected with weighing sensor.
Another object of the present invention is to provide a kind of measurement method for roller type electronic ruler.
8th embodiment：A kind of measurement method for roller type electronic ruler includes the following steps：
A. idler wheel contact is put in and measures object initiating terminal, roll the idler wheel to measurement object end；
B. the idler wheel, which rolls, drives the transmission gear rotation, and the transmission gear drives the measurement gear rotation,
Then the grating disc being fixedly connected with one heart is driven to rotate；
C. the photoelectric sensor inductively measures the umber of pulse that the grating disc generates, and transmits signal at the data
Module is managed, the turnning circle of the grating disc is obtained by calculation, the as described turnning circle for measuring gear；
D. the data processing module passes through the turnning circle for measuring gear, the measurement gear and the driving cog
The ratio between the perimeter of all side gears of wheel can obtain the turnning circle of the transmission gear week side gear, the institute to be connected with one heart
The turnning circle of idler wheel is stated, it is the length that the idler wheel rolls that the perimeter of the idler wheel, which is multiplied by turnning circle,.
E. the data processing module carries out image or audio output to final measurement data.
F. the button for enabling clear device resets sensor passes signal to the data processing module, at the data
Reason module is zeroed out measurement data, in case measure next time.
The data processing module of the present invention receives the umber of pulse that grating disc generates to obtain concentric fixed measurement gear
Turnning circle obtains the turnning circle i.e. rotation of idler wheel of transmission gear by measuring the ratio between the perimeter of gear and transmission gear
The number of turns obtains the length of idler wheel, therefore high certainty of measurement in conjunction with the perimeter of idler wheel.In addition, roller type electricity provided by the invention
Sub- ruler is extremely convenient for the measurement of irregular inner wall, easy to operate.
Description of the drawings
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the whole positive structure diagram of the preferred embodiment of the present invention；
Fig. 2 is that the preferred embodiment of the present invention faces cross-sectional view；
Fig. 3 is that the another of the preferred embodiment of the present invention faces cross-sectional view.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements, can be wirelessly connected, can also be wired connection.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
The purpose of the present invention is to provide a kind of roller type electronic ruler and its measurement methods, it is intended to solve existing electronic, horological
There is the larger technical problems of precision deficiency error for gage.
To achieve the above object, referring to Fig. 1-3, in embodiment one, one aspect of the present invention provides a kind of roller type electronic
Ruler, including：Shell 1, idler wheel 2, transmission gear 20, measurement gear 4, grating disc 40, photoelectric sensor 41, clear device (50,
51), pcb board 3 and power supply (not shown).
On the one hand, referring to Fig. 2 and Fig. 3, idler wheel 2 is fixed on the measurement port of shell 1 by roller shaft (not shown),
Transmission gear 20 is fixed on idler wheel 2 with one heart；It measures gear 4 and carries out toe joint with transmission gear 20.
It should be noted that being connect with idler wheel 2 by transmission gear 20 because measuring gear 4, therefore, when idler wheel 2 carries out
When rolling, idler wheel 2 drives concentric fixed transmission gear 20 to rotate, and transmission gear 20, which then drives, measures the rotation of gear 4.
Wherein, it is however generally that, 2 side of idler wheel carries anti-slop serrations, and anti-slop serrations are closeer, when carrying out tolling measurement, roll at this time
The rolling distance calculating of wheel 2 is the perimeter of anti-slop serrations.
On the other hand, referring to Fig. 3, grating disc 40 is fixed on one heart measures gear 4；Photoelectric sensor 41 is for incuding grating
The umber of pulse of disk 40.
Wherein, it is however generally that, grating disc 40 is fixed on the lower section for measuring gear 4 with one heart；Meanwhile photoelectric sensor 41 is general
For the character "door" form structure of openings at one side, grating disc 40 is located between character "door" form structure opening, two pieces up and down of photoelectric sensor 41
Emit signal between structure, when grating disc 40 is driven rotation, grating on grating disc 40 it is alternate pass through photoelectric sensor
41 signal generates pulse, to which photoelectric sensor 41 receives pulse and counts, is transferred to data processing module.
Therefore, grating disc 40 1 is measured according to the raster count of grating disc 40 and encloses the unit circle umber of pulse that can be generated, and
Overall pulse number divided by unit circle umber of pulse are the turnning circle of grating disc by the overall pulse number that photoelectric sensor 41 receives,
It is the turnning circle for measuring gear 4 simultaneously.
In conclusion compared to existing electronic ruler, above-mentioned design makes the measurement accuracy higher of the present invention.
On the other hand, referring to Fig. 2, pcb board 3 is fixed in shell 1, with photoelectric sensor 41 and power supply (not shown) into
Row is electrically connected；Pcb board 3 is provided with data processing module, the signal for handling sensor passes.
Wherein, pcb board 3 one of them function as the platform that an each component is electrically connected, meanwhile, receive and control
The signal of each component.
In addition, pcb board 3 is provided with data processing module, it is responsible for receiving the umber of pulse signal of photoelectric sensor 41, and storage
Parameters in data processing module, such as 40 unit circle umber of pulse of grating disc, and grating disc is obtained by calculation processing
40 turnning circle.
Meanwhile data processing module may include input module, function selecting module, computing module, volume computing module, clear
Zero module, output module.
Wherein, input module is used to receive the signal of each sensor；Function selecting module is used for specifically measuring row
To be selected；Computing module is for calculating input module received signal；Dump block is for the behavior to measurement
It is zeroed out processing；Volume computing module is used for when measuring the length, width and height of an object, is calculated by being multiplied by length, width and height
Go out the volume of object；Output module is used to carry out the result that computing module, volume computing module and circumferential measurements module obtain
Output, such as image output, audio output.
It should be noted that each submodule of data processing module is the prior art.
On the other hand, referring to Fig. 1 and Fig. 2, clear device (50,51) includes button 50 and is fixedly connected with button 50 clear
Zero sensor 51, button 50 are connected in the corresponding trepanning of shell 1, are reset sensor 51 and are electrically connected with pcb board 3.
Wherein, it by lower button 50, resets sensor 51 and experiences trigger signal, then transmit the number on signal to pcb board 3
According to processing module, the submodule dump block in data processing module is zeroed out processing to the behavior of measurement, in case next time
It measures.
In conjunction with first embodiment, in second embodiment, be fixed in shell 1 infrared distance measuring device (be not shown in figure, under
Together)；Infrared distance measuring device is electrically connected with pcb board 3, and includes infrared transmitter and infrared remote receiver.
Wherein, wherein shell 1 is equipped with corresponding launch hole (being not shown in figure, similarly hereinafter), while data processing module is corresponding
One infrared distance measurement computing module of increase.Infrared transmitter emits infrared laser to the surface of object being measured to launch hole,
Reflection is received when returning by infrared remote receiver, obtains the time difference of Infrared laser emission and reception, time difference divided by two are multiplied by
The light velocity is distance of the transmitter of the present invention to object being measured surface.
Particularly, infrared transmitter and infrared remote receiver can install a wavelength measuring apparatus (not shown) additional, can be to
Testee in movement emits infrared laser, passes through the infrared laser for measuring transmitting and the wavelength for receiving the infrared laser returned
Variation can calculate the movement velocity of the testee in movement further according to Doppler effect principle.
In conjunction with first embodiment, in 3rd embodiment, 1 top of shell is provided with transparent display window 11, display window
11 fittings are fixed with the display screen 12 to match, and display screen 12 is electrically connected with pcb board 3.
Wherein, 1 top of shell is provided with display window 11, it is however generally that, display window 11 is that one block of transparent material is fixed
Connection, the fitting of display screen 12 is fixed in transparent material, and is protected.Display screen 12 can be to the output mould of data processing module
The image information of block is shown.
In conjunction with first embodiment, in fourth embodiment, transmission gear 20 with measure gear 4 by transferring gear (in figure not
Show) carry out toe joint.
Wherein, in some designs, because transmission gear 20 with measure gear 4 sometimes radius be smaller or distance compared with
It is long, transmission gear 20 is made by gear (not shown) of transferring and measures 4 toe joint of gear.Gear (not shown) of transferring can
Bumper and absorbing shock is carried out to the rotation of entire gear train, while when the gear rotation of all toe joints, the perimeter length of rotation is identical,
The gear related data that finally measurement needs to be stored in advance in data processing module is still transmission gear 20 and measurement gear 4
The ratio between perimeter.
In conjunction with first embodiment, in the 5th embodiment, the umber of pulse that the circle of grating disc 40 1 generates is 280-300.
It should be noted that the umber of pulse generated when the grating rotation of grating disc 40 determines the precision entirely measured, this
The umber of pulse that the grating disc 40 of invention can generate is 280-300, and by test, the error of measurement is about 1%.
In conjunction with first embodiment, in sixth embodiment, power supply (not shown) is repeatable charge and discharge of the battery.
Wherein, shell 1 has the charging hole 6 that rechargeable battery matches accordingly.
In conjunction with first embodiment, in the 7th embodiment, idler wheel 2 is made of anti-slip material.
Wherein, it is however generally that, anti-slip material uses silica gel, and silica gel quality is softer, the ground contacted with object being measured surface
Side's friction is larger, will not lead to idler wheel and generate sliding behavior when object being measured surface scrolls.
In conjunction with first embodiment, in the 8th embodiment, 2 side of idler wheel be provided with slip-resistant texture component (be not shown in figure, under
Together).
Wherein, setting slip-resistant texture component in 2 side of idler wheel further increases rubbing for idler wheel 2 and testee surface
Power is wiped, prevents to slide, keeps measurement more acurrate.
In addition, the radial thickness that slip-resistant texture component is located at 2 weeks side surfaces of idler wheel is all identical, therefore, at measurement data
When reason, the real radius of idler wheel 2 is that the former radius of idler wheel is located at the thickness of 2 radial direction of idler wheel plus slip-resistant texture component.
In conjunction with first embodiment, in the 9th embodiment, shell is set relative to the other end for being provided with measurement port one end
It is equipped with elastic hook (being not shown in figure, similarly hereinafter), elastic hook is connected with weighing sensor (being not shown in figure, similarly hereinafter).
Wherein, data processing module is provided with Weighing module accordingly, the weight change for being transmitted to weighing sensor
Information carries out calculation processing.
It should be noted that when weighing, elastic hook lifts tested article, and weighing sensor experiences weight change,
The information of weight change is transferred to Weighing module, by calculating, obtains the weight information of testee.
Another object of the present invention is to provide a kind of measurement method for roller type electronic ruler.
8th embodiment：A kind of measurement method for roller type electronic ruler includes the following steps：
A. the contact of idler wheel 2 is put in and measures object initiating terminal, scroll wheel 2 to measurement object end.
It should be noted that in general, the rolling of idler wheel 2 need not do special label, when rolling, will contact point
In the starting point of testee, it is rolled to end, the spontaneous stopping of idler wheel 2 rolls.When needing to measure the perimeter of object, select
Testee surface is a bit, when observing contact point and being again positioned at Chosen Point, i.e., complete from point starting around testee surface one week
At the measurement of perimeter.
B. idler wheel 2 rolls band nutating gear 20 and rotates, and transmission gear 20 drives measurement gear 4 to rotate, and then drives same
The grating disc 40 that the heart is fixedly connected rotates.
Wherein, the rotation of grating disc 40 is to generate pulse.
C. the umber of pulse that the measurement of inductance of photoelectric sensor 41 grating disc 40 generates, transmission signal to data processing module,
The turnning circle of grating disc 40 is obtained by calculation, as measures the turnning circle of gear 4.
Wherein, grating disc 40 is concentric fixed with measurement gear 4, and the turnning circle of the two is identical.
D. data processing module is by measuring the turnning circle of gear 4, measuring 20 weeks side gears of gear 4 and transmission gear
The ratio between perimeter can obtain the turnning circle of 20 weeks side gears of transmission gear, the turnning circle of the idler wheel 2 to be connected with one heart,
It is the length that idler wheel 2 rolls that the perimeter of idler wheel 2, which is multiplied by turnning circle,.
Wherein, 20 weeks side gears of transmission gear and measurement 4 toe joint of gear, therefore the circumferential length rotated is identical, according to two
The ratio between perimeter of person can be obtained the ratio between turnning circle；It is that idler wheel 2 rolls that the perimeter of transmission gear 20, which is multiplied by turnning circle,
Length.
E. data processing module carries out image or audio output to final measurement data.
F. the button for enabling clear device (50,51) resets sensor 51 and transmits signal to data processing module, at data
Reason module is zeroed out measurement data, in case measure next time.
The data processing module of the present invention receives the umber of pulse that grating disc generates to obtain concentric fixed measurement gear
Turnning circle obtains the turnning circle i.e. rotation of idler wheel of transmission gear by measuring the ratio between the perimeter of gear and transmission gear
The number of turns obtains the length of idler wheel, therefore high certainty of measurement in conjunction with the perimeter of idler wheel.In addition, roller type electricity provided by the invention
Sub- ruler is extremely convenient for the measurement of irregular inner wall, easy to operate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of roller type electronic ruler, which is characterized in that including：Shell, transmission gear, measures gear, grating disc, light at idler wheel
Electric transducer, clear device, pcb board and power supply；
The idler wheel is fixed on the measurement port of the shell by roller shaft, and the transmission gear is fixed on the rolling with one heart
Wheel；The measurement gear carries out toe joint with the transmission gear；
The grating disc is fixed on the measurement gear with one heart；
The photoelectric sensor is used to incude the umber of pulse of the grating disc；
The pcb board is fixed in the shell, is electrically connected with the photoelectric sensor and the power supply；It is described
Pcb board is provided with data processing module, the signal for handling sensor passes；
The clear device includes button and the clearing sensor being fixedly connected with the button, and the button is connected in the shell
In the corresponding trepanning of body, the clearing sensor is electrically connected with the pcb board.
2. roller type electronic ruler as described in claim 1, which is characterized in that be fixed with infrared distance measuring device in the shell；
The infrared distance measuring device is electrically connected with the pcb board, and includes infrared transmitter and infrared remote receiver.
3. roller type electronic ruler as described in claim 1, which is characterized in that the case top is provided with transparent display window
Mouthful, the display window fitting is fixed with the display screen to match, and the display screen is electrically connected with pcb board.
4. roller type electronic ruler as described in claim 1, which is characterized in that the transmission gear passes through with the measurement gear
Gear of transferring carries out toe joint.
5. roller type electronic ruler as described in claim 1, which is characterized in that the grating disc one encloses the umber of pulse generated and is
280-300.
6. roller type electronic ruler as described in claim 1, which is characterized in that the power supply is repeatable charge and discharge of the battery.
7. roller type electronic ruler as described in claim 1, which is characterized in that the idler wheel is made of anti-slip material.
8. roller type electronic ruler as described in claim 1, which is characterized in that the idler wheel side is provided with slip-resistant texture portion
Part.
9. roller type electronic ruler as described in claim 1, which is characterized in that the shell relative to being provided with measurement port
The other end of one end is provided with elastic hook, and the elastic hook is connected with weighing sensor.
10. a kind of measurement method for roller type electronic ruler, which is characterized in that include the following steps：
A. idler wheel contact is put in and measures object initiating terminal, roll the idler wheel to measurement object end；
B. the idler wheel, which rolls, drives the transmission gear rotation, and the transmission gear drives the measurement gear rotation, then
Drive the grating disc rotation being fixedly connected with one heart；
C. the photoelectric sensor inductively measures the umber of pulse that the grating disc generates, and transmits signal to the data processing mould
The turnning circle of the grating disc is obtained by calculation in block, the as described turnning circle for measuring gear；
D. the data processing module passes through the turnning circle for measuring gear, the measurement gear and transmission gear week
The ratio between perimeter of side gear can obtain the turnning circle of the transmission gear week side gear, the rolling to be connected with one heart
The turnning circle of wheel, it is the length that the idler wheel rolls that the perimeter of the idler wheel, which is multiplied by turnning circle,.
E. the data processing module carries out image or audio output to final measurement data.
F. the button for enabling clear device resets sensor passes signal to the data processing module, the data processing mould
Block is zeroed out measurement data, in case measure next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806390.XA CN108731600A (en) | 2018-07-20 | 2018-07-20 | A kind of roller type electronic ruler and its measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810806390.XA CN108731600A (en) | 2018-07-20 | 2018-07-20 | A kind of roller type electronic ruler and its measurement method |
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| Publication Number | Publication Date |
|---|---|
| CN108731600A true CN108731600A (en) | 2018-11-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810806390.XA Pending CN108731600A (en) | 2018-07-20 | 2018-07-20 | A kind of roller type electronic ruler and its measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906895A (en) * | 2019-12-19 | 2020-03-24 | 江苏建筑职业技术学院 | Measuring device for architectural decoration design |
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| CN88202142U (en) * | 1988-03-17 | 1988-11-23 | 上海市第三建筑工程公司 | Converting device for picture curve length signal |
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| CN101373131A (en) * | 2008-09-28 | 2009-02-25 | 深圳华为通信技术有限公司 | Method for measuring object length and handhold terminal thereof |
| CN203948600U (en) * | 2014-06-23 | 2014-11-19 | 南京福碧源环境技术有限公司 | A kind of grating gear assembly |
| CN206573026U (en) * | 2017-01-22 | 2017-10-20 | 北京博维恒信科技发展有限公司 | The measurement assembly and measuring scale of measuring scale |
| CN206818872U (en) * | 2017-04-19 | 2017-12-29 | 珠海码硕科技有限公司 | Rangefinder with roller function |
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2018
- 2018-07-20 CN CN201810806390.XA patent/CN108731600A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88202142U (en) * | 1988-03-17 | 1988-11-23 | 上海市第三建筑工程公司 | Converting device for picture curve length signal |
| CN2705776Y (en) * | 2004-05-18 | 2005-06-22 | 海欧科技股份有限公司 | Electronic length measurer |
| CN101373131A (en) * | 2008-09-28 | 2009-02-25 | 深圳华为通信技术有限公司 | Method for measuring object length and handhold terminal thereof |
| CN203948600U (en) * | 2014-06-23 | 2014-11-19 | 南京福碧源环境技术有限公司 | A kind of grating gear assembly |
| CN206573026U (en) * | 2017-01-22 | 2017-10-20 | 北京博维恒信科技发展有限公司 | The measurement assembly and measuring scale of measuring scale |
| CN206818872U (en) * | 2017-04-19 | 2017-12-29 | 珠海码硕科技有限公司 | Rangefinder with roller function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110906895A (en) * | 2019-12-19 | 2020-03-24 | 江苏建筑职业技术学院 | Measuring device for architectural decoration design |
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