CN209197662U - High-precision holds wheeled type distance measuring apparatus - Google Patents
High-precision holds wheeled type distance measuring apparatus Download PDFInfo
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- CN209197662U CN209197662U CN201720418189.5U CN201720418189U CN209197662U CN 209197662 U CN209197662 U CN 209197662U CN 201720418189 U CN201720418189 U CN 201720418189U CN 209197662 U CN209197662 U CN 209197662U
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Abstract
The utility model belongs to ranging technology field, it is related to a kind of hand-held wheeled type distance measuring apparatus, it includes shell, in the corner of shell, wheeled base is set, rotatable measurement wheel is installed on wheel seat, the circumference side of the measurement wheel, which is fixed with, to be alternately arranged and opposite polarity magnetic device, at least a pair of hall device matched with the polarity of magnetic device is mounted on wheel seat, the heat treatment that magnetic device generates when hall device measures wheel rotation by detection exports the distance that measurement is calculated to control circuit.Angle Measurement Module is internally provided in shell, angle to detect shell and measuring surface is exported to control circuit, calculate the distance of measurement wheel contact point to the parallel determination face of adjacent corners, measure two sides or it is unilateral have blocking surface when measuring surface distance, it can be with opening angle measurement module, Angle Measurement Module is not needing, and the function can be closed by key.
Description
Technical field
The invention belongs to ranging technology fields, are related to a kind of hand-held wheeled type distance measuring apparatus of high-precision.
Background technique
Hall effect is one kind of galvanomagnetic-effect, this phenomenon be American physicist Hall in 1879 in research metal
Conductive mechanism when find.When electric current passes through conductor perpendicular to external magnetic field, carrier deflects, perpendicular to electric current and magnetic
The direction of field can generate an additional electric field, to generate potential difference at the both ends of conductor, this phenomenon is exactly Hall effect, this
Potential difference is also referred to as Hull voltage.
According to Hall effect, element made of people's semiconductor material is Hall element.It has to magnetic-field-sensitive, knot
Structure is simple, small in size, frequency response is wide, output voltage variation greatly with long service life the advantages that, therefore, measurement, automation,
The fields such as computer and information technology are widely used.
People are made into wheeled type distance measuring apparatus using the principle of Hall effect in the prior art, and this wheeled type distance measuring apparatus is mainly used for
The upper size on ground is measured, the switch change that it is generated when rotating on the ground by wheel detects pulse number, passes through calculating
Wheel perimeter and aperture number calculate distance.
Hand-held type miniature wheeled type distance measuring apparatus is mainly used in the size of measurement small article, such as cabinet, furniture, still
Led to the problem of in the meeting of hand-held type miniature wheeled type distance measuring apparatus more, for example after the completion of rapid survey, wheel leaves measuring surface
Afterwards because the inertia of rotation can allow wheel to continue to rotate, very big error can be generated at this time, be furthermore also difficult to accomplish anti-inside machine
The effect of dirt and waterproof.In addition, the distance of front and back is because of blocking surface and because instrument when such as there is the length of blocking surface on two sides of measurement
The length and width of device sheet certainly, can not accurately be measured in corner.
Summary of the invention
The object of the present invention is to provide a kind of high-precisions to hold wheeled type distance measuring apparatus comprising has shell, in the corner of shell
Wheeled base is set, rotatable measurement wheel is installed on wheel seat, the circumference side of the measurement wheel, which is fixed with, to be alternately arranged and pole
Property opposite magnetic device, at least a pair of hall device matched with the polarity of magnetic device is mounted on wheel seat,
The heat treatment that magnetic device generates when hall device measures wheel rotation by detection is exported to control circuit, is calculated measurement wheel and is walked
The distance crossed；
It is internally provided with Angle Measurement Module in shell, the angle to detect shell and measuring surface, which exports, gives control electricity
Road, calculate measurement wheel contact point to adjacent corners parallel determination face distance, measure two sides or it is unilateral have blocking surface when
Measuring surface distance, can not needed with opening angle measurement module, Angle Measurement Module, the function can be closed by key
Energy.
In of the invention one preferable embodiment, the Angle Measurement Module is connected with control circuit, and angle is surveyed
Measuring module includes angular transducer.
In of the invention one preferable embodiment, two sides are each provided with notch on the wheel seat, and the measurement wheel turns
The both ends of moving axis are placed in the notch of two sides, and rotation axis can make measurement wheel can be away from or approaching hall device along notch activity.
In of the invention one preferable embodiment, spring pressure is additionally provided between the rotation axis and wheel seat of the measurement wheel
Contracting component, measurement is taken turns far from hall device under the effect of spring-compressed component, and measurement wheel is moved in stress close to Hall device
Part.
In of the invention one preferable embodiment, be also equipped with interactive keyboard and display screen on shell, respectively all with
Internal control circuit connection, interactive keyboard export result on a display screen to switch instrument and setting parameter, control circuit
Display.
In of the invention one preferable embodiment, a trigger switch is additionally provided on wheel seat, detection measurement wheel
It is close, to trigger hall device, control circuit and the work of display screen.
Preferable technical solution of the invention has technical effect that, adopts the measurement wheel for the device that is magnetic and with Check up polarity
Hall device realizes wheeled ranging, wheel leave hall device after measuring surface detection it is also all when interruption, prevent the measurement from taking turns
Inertia rotation can generate very big error, and furthermore instrument internal can also accomplish good dust-proof and waterproof effect；It can also survey
Measure two sides or unilateral distance when having a blocking surface.
Detailed description of the invention
Fig. 1 is the state that rangefinder in embodiment leaves measuring surface, therein to estimate wheel far from hall device, Hall device
Part can not detect the magnetism on measurement wheel.
Fig. 2 is state of the rangefinder in measuring surface in embodiment.
Fig. 3 is the partial structurtes diagram one of the rangefinder in embodiment.
Fig. 4 is the partial structurtes diagram two of the rangefinder in embodiment.
Fig. 5 is the band size view of the rangefinder in embodiment.
Fig. 6 is the measuring principle figure of the rangefinder in embodiment.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with attached drawing and specific embodiment, so that the skill of this field
The clear and complete understanding present invention of art personnel's energy.
Referring to Fig.1 shown in -4, it includes shell 1, in shell that the present embodiment, which is that a kind of high-precision holds wheeled type distance measuring apparatus,
Corner wheeled base 2 is set, rotatable measurement wheel 3 is installed, the circumference side for measuring wheel, which is fixed with, to be alternately arranged on wheel seat
And opposite polarity magnetic device 31, a pair of hall device matched with the polarity of magnetic device is mounted on wheel seat
4, the heat treatment that magnetic device generates when hall device measures wheel rotation by detection is exported to control circuit, calculates measurement
Distance.It is also equipped with interactive keyboard 5 and display screen 4 on shell, is all connect respectively with internal control circuit, interactive keyboard is used
To switch instrument and setting parameter, control circuit output result is shown on a display screen.
It is internally provided with Angle Measurement Module in shell, the angle to detect shell and measuring surface, which exports, gives control electricity
Road, calculate measurement wheel contact point to adjacent corners parallel determination face distance, measure two sides or it is unilateral have blocking surface when
Measuring surface distance, can not needed with opening angle measurement module, Angle Measurement Module, the function can be closed by key
Energy.Degree measurement module in the present embodiment is connected with control circuit, and Angle Measurement Module uses angular transducer, angle sensor
Device is not shown in the accompanying drawings.
Magnetic device 31 in the present embodiment is magnet, and magnet is evenly distributed on measurement wheel circumference side, the pole N and the pole S
Magnet is alternately arranged, and magnet is shaped on measurement wheel when production, and hall device 4 is two, can detect the pole N and the pole S respectively
Heat treatment.
Two sides are each provided with notch 21 on wheel seat 2, and the both ends for measuring the rotation axis 32 of wheel are placed in the notch 21 of two sides, turn
Moving axis 32 can make measurement wheel can be away from or approaching hall device along notch activity.It measures and is also set between the rotation axis and wheel seat of wheel
It is equipped with spring-compressed component 22, measurement is taken turns far from hall device under the effect of spring-compressed component 22, and measurement wheel can in stress
Move closer to hall device.
A trigger switch is additionally provided on wheel seat, trigger switch is not shown in the figure, and is used to detect connecing for measurement wheel
Closely, to trigger hall device, control circuit and the work of display screen.
It measures the process realized, when resting, allows measurement wheel to flick outward by spring-compressed component, Hall device
The illegal magnetic signal detected on measurement wheel of part, so the state that measurement wheel leaves in clutch, can not detect magnetism
Variable signal, even if measurement wheel nor affects on the result of measurement because of inertia rotation or the rotation of other external force.
When starting measurement, measurement wheel stress is moved inward, while can add a trigger switch, allows control circuit work
Make, triggering processor starts to detect signal.Hall device can detecte the magnetic N and S signal on measurement wheel, before a little also
The S polar region for allowing measurement to take turns should be debugged in advance and N polar region is corresponded to each other with hall device respectively, be in N, S always
Or S, N-state, the mode that can cross counting at this time detects N, the polar variable quantity of S, while can be become by the NS polarity of measurement wheel
Changing judgement measurement wheel is to advance or retreat.
Such as when the polarity of the first two hall device detection is is respectively the pole N and the pole S, this goes ahead, and is detected as S to N
Variation, this walk backward then be N to S variation, phase change just on the contrary, so by identification phase change can be obtained
Direction.It can cross to calculate and can obtain the distance that measurement wheel is walked.Distance calculation formula=wheel magnetic spacing * magnetic number of alternations.
Because wheel can be placed in outside completely, there was only magnetic field connection with enclosure interior, magnetic field is because that can penetrate non magnetic material
Material.So good waterproof, dust-proof effect can be carried out in this way.
Referring to shown in Fig. 5-6, holds wheeled type distance measuring apparatus for the high-precision of the present embodiment and measuring two sides or unilateral having resistance
The distance of block face mainly measures the distance of L2 and L4 in Fig. 6.
The value of current angular a1 or a2 is first measured by angular transducer, and there are a1+a2=90 degree between a1 and a2
Relationship, it is known that the width L5 and length L6 of instrument are being controlled by formula L2=L5*SIN (a1), L4=L6*SIN (a2)
The distance of L2 and L4 can be calculated in circuit, L3 value is gone out by not measuring wheel measurement.
Above embodiments are merely preferred embodiments of the present invention, but protection scope of the present invention is not limited to
This, anyone skilled in the art in the technical scope disclosed by the present invention, the variation that can readily occur in or replaces
It changes, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claims
Subject to range.
Claims (5)
1. a kind of high-precision holds wheeled type distance measuring apparatus comprising have shell, on a corner of shell setting wheeled base, wheel seat
Rotatable measurement wheel is installed, the circumference side of the measurement wheel, which is fixed with, to be alternately arranged and opposite polarity magnetic device,
At least a pair of hall device matched with the polarity of magnetic device is mounted on wheel seat, hall device is surveyed by detection
The heat treatment that magnetic device generates when amount wheel rotation exports and calculates the distance that measurement wheel is passed by control circuit；
It is internally provided with Angle Measurement Module in shell, the angle to detect shell and measuring surface is exported to control circuit,
Calculate the distance of measurement wheel contact point to the parallel determination face of adjacent corners；The Angle Measurement Module is connected with control circuit
It connects, Angle Measurement Module includes angular transducer.
2. high-precision according to claim 1 holds wheeled type distance measuring apparatus, which is characterized in that two sides are respectively arranged on the wheel seat
There is notch, the both ends of the rotation axis of the measurement wheel are placed in the notch of two sides, and rotation axis can be such that measurement takes turns along notch activity
It can be away from or approaching hall device.
3. high-precision according to claim 2 holds wheeled type distance measuring apparatus, which is characterized in that it is described measurement wheel rotation axis with
Spring-compressed component is additionally provided between wheel seat, measurement is taken turns far from hall device under the effect of spring-compressed component, and measurement wheel exists
It moves when stress close to hall device.
4. high-precision according to claim 1 holds wheeled type distance measuring apparatus, which is characterized in that be also equipped with interaction on shell
Keyboard and display screen are all connect with internal control circuit respectively, and interactive keyboard is to switch instrument and setting parameter, control electricity
Road output result is shown on a display screen.
5. high-precision according to claim 1 holds wheeled type distance measuring apparatus, which is characterized in that be additionally provided with one on wheel seat
Trigger switch, detection measurement wheel approaches, to trigger hall device, control circuit and the work of display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418189.5U CN209197662U (en) | 2017-04-20 | 2017-04-20 | High-precision holds wheeled type distance measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418189.5U CN209197662U (en) | 2017-04-20 | 2017-04-20 | High-precision holds wheeled type distance measuring apparatus |
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| Publication Number | Publication Date |
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| CN209197662U true CN209197662U (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720418189.5U Active CN209197662U (en) | 2017-04-20 | 2017-04-20 | High-precision holds wheeled type distance measuring apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949823A (en) * | 2017-04-20 | 2017-07-14 | 王振兴 | The hand-held wheeled type distance measuring apparatus of high accuracy |
| CN111641742A (en) * | 2020-05-27 | 2020-09-08 | 捷开通讯(深圳)有限公司 | Mobile terminal and size measuring method |
-
2017
- 2017-04-20 CN CN201720418189.5U patent/CN209197662U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949823A (en) * | 2017-04-20 | 2017-07-14 | 王振兴 | The hand-held wheeled type distance measuring apparatus of high accuracy |
| CN111641742A (en) * | 2020-05-27 | 2020-09-08 | 捷开通讯(深圳)有限公司 | Mobile terminal and size measuring method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221104 Address after: 518000 4th floor, building e, Tangtou first industrial zone, Tangtou community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Dolby Laser Co.,Ltd. Address before: 518000 Shenzhen, Guangdong Guangming New District Gongming office, Tian Liao community guangguangxin Park West seven, Qiao de science and Technology Park building, six B building. Patentee before: SHENZHEN DOBIY ELECTRONIC Co.,Ltd. |
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| TR01 | Transfer of patent right |