CN206618427U - Hand-held wheeled type distance measuring apparatus - Google Patents
Hand-held wheeled type distance measuring apparatus Download PDFInfo
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- CN206618427U CN206618427U CN201720295325.6U CN201720295325U CN206618427U CN 206618427 U CN206618427 U CN 206618427U CN 201720295325 U CN201720295325 U CN 201720295325U CN 206618427 U CN206618427 U CN 206618427U
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- wheel
- measurement
- measurement wheel
- measuring apparatus
- distance measuring
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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 housing, in the corner of housing, 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 one pair of hall device being engaged with the polarity of magnetic device is mounted with wheel seat, the heat treatment that magnetic device is produced when hall device is by detecting that measurement wheel is rotated, which is exported, gives control circuit, calculates the distance of measurement.
Description
Technical field
The utility model belongs to ranging technology field, is related to a kind of hand-held wheeled type distance measuring apparatus.
Background technology
Hall effect is one kind of galvanomagnetic-effect, and this phenomenon is that American physicist Hall was studying metal in 1879
Conductive mechanism when find.When electric current perpendicular to external magnetic field by conductor when, carrier deflects, perpendicular to electric current and magnetic
The direction of field can produce an additional electric field, so as to produce electrical potential difference at the two ends of conductor, this phenomenon is exactly Hall effect, this
Electrical potential difference is also referred to as Hull voltage.
According to Hall effect, the element that people are made of semi-conducting material is Hall element.It has to magnetic-field-sensitive, knot
Structure is simple, small volume, frequency response are wide, output voltage change greatly with service life it is long the advantages of, therefore, measurement, automate,
The field such as computer and information technology is widely used.
People make 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 in
The upper size on ground is measured, the switch change detection pulse number produced when it is rotated on the ground by wheel, by calculating
Wheel girth and perforate number calculate distance.
Hand-held type miniature wheeled type distance measuring apparatus be mainly used in measurement small article size, such as casing, furniture, still
The problem of the meeting of hand-held type miniature wheeled type distance measuring apparatus produces more, such as after being quickly measured, wheel leaves measuring surface
Afterwards because the inertia of rotation can allow wheel to be rotated further, very big error can be now produced, also is difficult to accomplish anti-inside machine in addition
The effect of dirt and waterproof.
Utility model content
The purpose of this utility model is to provide a kind of hand-held wheeled type distance measuring apparatus, and it includes housing, is set in the corner of housing
It is equipped with wheel seat, wheel seat and rotatable measurement wheel is installed, the circumference side of the measurement wheel, which is fixed with, is alternately arranged and polarity
Opposite magnetic device, is mounted with least one pair of hall device being engaged with the polarity of magnetic device, suddenly on wheel seat
The heat treatment that magnetic device is produced when your device is by detecting that measurement wheel is rotated, which is exported, gives control circuit, calculate measurement away from
From.
In one of the present utility model preferable embodiment, both sides are each provided with notch, the measurement wheel on the wheel seat
The two ends of rotary shaft be placed in the notch of both sides, rotary shaft along notch activity, can make the measurement wheel can be away from or close to Hall
Device.
In one of the present utility model preferable embodiment, bullet is additionally provided between the rotary shaft and wheel seat of the measurement wheel
Spring compression member, measurement wheel is away from hall device under the effect of spring-compressed part, and measurement wheel may move close to suddenly in stress
That device.
In one of the present utility model preferable embodiment, interactive keyboard and display screen are also equipped with housing, respectively
All it is connected with internal control circuit, interactive keyboard is to switch instrument and arrange parameter, and control circuit output result is in display
Screen display.
In one of the present utility model preferable embodiment, a trigger switch, detection measurement are additionally provided with wheel seat
That takes turns is close, to trigger the work of hall device, control circuit and display screen.
Having technical effect that for preferable technical scheme of the present utility model, adopts the measurement wheel for the device that is magnetic and with polarity inspection
The hall device of survey realizes wheeled ranging, wheel leave hall device after measuring surface detection it is also all when interrupt, prevent measurement
The inertia of wheel, which is rotated, can produce very big error, and instrument internal can also accomplish good dust-proof and waterproof effect in addition.
Brief description of the drawings
Fig. 1 is the state that rangefinder in embodiment leaves measuring surface, therein to estimate wheel away from hall device, Hall device
Part can not detect the magnetic in 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.
Embodiment
The technical solution of the utility model is described in detail with specific embodiment below in conjunction with accompanying drawing, so that this area
Technical staff can understand complete understanding the utility model.
Shown in reference picture 1-4, the present embodiment is a kind of hand-held wheeled type distance measuring apparatus, includes housing 1, in the corner of housing
Set and rotatable measurement wheel 3 is installed on wheeled base 2, wheel seat, the circumference side of measurement wheel, which is fixed with, to be alternately arranged and polarity
Opposite magnetic device 31, is mounted with the hall device 4 being engaged with the polarity of magnetic device for a pair, Hall on wheel seat
The heat treatment that magnetic device is produced when device is by detecting that measurement wheel is rotated, which is exported, gives control circuit, calculates the distance of measurement.
Interactive keyboard 5 and display screen 4 are also equipped with housing, is all connected respectively with internal control circuit, interactive keyboard is to open
Instrument and arrange parameter are closed, control circuit output result is shown on a display screen.
Magnetic device 31 in the present embodiment is magnet, and magnet is evenly distributed on measurement wheel circumference side, N poles and S poles
Magnet is alternately arranged, and magnet is shaped in measurement wheel during making, and hall device 4 is two, and N poles and S poles are can detect respectively
Heat treatment.
Both sides are each provided with notch 21 on wheel seat 2, and the two ends of the rotary shaft 32 of measurement wheel are placed in the notch 21 of both sides, turn
Moving axis 32 can along notch activity, make measurement wheel can away from or close to hall device.Also set between the rotary shaft and wheel seat of measurement wheel
Spring-compressed part 22 is equipped with, measurement wheel is away from hall device under the effect of spring-compressed part 22, and measurement wheel can in stress
Move closer to hall device.
It is additionally provided with a trigger switch on wheel seat, not shown in trigger switch figure, it is used to detect connecing for measurement wheel
Closely, the work to trigger hall device, control circuit and display screen.
It is when resting, outwards to be flicked by measurement wheel by spring-compressed part, Hall device that it, which measures the process realized,
The illegal magnetic signal detected in measurement wheel of part, so measurement wheel is in the state that clutch leaves, it is impossible to detect magnetic
Variable signal, even if measurement wheel is rotated or the rotation of other external force because of inertia, nor affects on the result of measurement.
When starting measurement, measurement wheel stress is moved inward, while can add a trigger switch, is allowed and is controlled circuit work
Make, triggering processor starts to detect signal.Hall device can detect N and the S signal of the magnetic in measurement wheel, before a little also
The S polar regions allowed in measurement wheel should be debugged in advance and N polar regions are mutually corresponding with hall device respectively, all the time in N, S
Or S, N-state, the mode that can now cross counting detects N, the variable quantity of S polarity, while can be become by the NS polarity of measurement wheel
Change judges that measurement wheel is advance or retrogressing.
For example when the polarity that the first two hall device is detected is respectively N poles and S poles, this goes ahead, and is detected as S to N
Change, this walk backward then be N to S change, phase place change is just on the contrary, so by recognizing that phase place change can obtain
Direction.Calculating, which can be crossed, just can obtain the distance that measurement wheel is walked.Apart from the magnetic spacing * magnetic numbers of alternations of calculation formula=wheel.
Because wheel can be placed in outside completely, only have magnetic field to be connected with enclosure interior, magnetic field is because that can penetrate non magnetic material
Material.So can so carry out good waterproof, dust-proof effect.
Above example, only the utility model preferably embodiment, but protection domain of the present utility model is simultaneously
This is not limited to, any one skilled in the art can think easily in the technical scope that the utility model is disclosed
The change or replacement arrived, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
This is defined by the protection domain of claims.
Claims (5)
1. a kind of hand-held wheeled type distance measuring apparatus, it includes housing, is set in the corner of housing on wheeled base, wheel seat and is provided with and can turn
Dynamic measurement wheel, the circumference side of the measurement wheel, which is fixed with, to be alternately arranged and opposite polarity magnetic device, is pacified on wheel seat
Dress is fixed with least one pair of hall device being engaged with the polarity of magnetic device, when hall device is by detecting that measurement wheel is rotated
The heat treatment that magnetic device is produced, which is exported, gives control circuit, calculates the distance of measurement.
2. hand-held wheeled type distance measuring apparatus according to claim 1, it is characterised in that both sides are each provided with groove on the wheel seat
Mouthful, the two ends of the rotary shaft of the measurement wheel are placed in the notch of both sides, and rotary shaft can make measurement wheel remote along notch activity
From or close to hall device.
3. hand-held wheeled type distance measuring apparatus according to claim 2, it is characterised in that the rotary shaft of the measurement wheel and wheel seat it
Between be additionally provided with spring-compressed part, spring-compressed part effect under measurement wheel away from hall device, measurement wheel is in stress
It may move close to hall device.
4. hand-held wheeled type distance measuring apparatus according to claim 1, it is characterised in that be also equipped with housing interactive keyboard and
Display screen, is all connected, interactive keyboard is to switch instrument and arrange parameter, control circuit output with internal control circuit respectively
As a result show on a display screen.
5. hand-held wheeled type distance measuring apparatus according to claim 1 a, it is characterised in that triggering is additionally provided with wheel seat and is opened
Close, detect the close of measurement wheel, to trigger the work of hall device, control circuit and display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295325.6U CN206618427U (en) | 2017-03-24 | 2017-03-24 | Hand-held wheeled type distance measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295325.6U CN206618427U (en) | 2017-03-24 | 2017-03-24 | Hand-held wheeled type distance measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206618427U true CN206618427U (en) | 2017-11-07 |
Family
ID=60233939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720295325.6U Active CN206618427U (en) | 2017-03-24 | 2017-03-24 | Hand-held wheeled type distance measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206618427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949911A (en) * | 2017-03-24 | 2017-07-14 | 王振兴 | Hand-held wheeled type distance measuring apparatus |
-
2017
- 2017-03-24 CN CN201720295325.6U patent/CN206618427U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949911A (en) * | 2017-03-24 | 2017-07-14 | 王振兴 | Hand-held wheeled type distance measuring apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180525 Address after: 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 after: SHENZHEN DOBIY ELECTRONIC 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: Wang Zhenxing |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221109 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. |