CN108459741B - Distance detection mechanism and navigation device with distance detection function - Google Patents
Distance detection mechanism and navigation device with distance detection function Download PDFInfo
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- CN108459741B CN108459741B CN201710097995.1A CN201710097995A CN108459741B CN 108459741 B CN108459741 B CN 108459741B CN 201710097995 A CN201710097995 A CN 201710097995A CN 108459741 B CN108459741 B CN 108459741B
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- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03543—Mice or pucks
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Abstract
本发明是公开一种具有距离侦测功能的导航装置，能够利用一距离侦测机构侦测相对于一工作面的距离，该距离侦测机构包含有一基座、一连接件、一特征单元以及一侦测单元。该连接件以部份突出之方式设置于该基座。该连接件选择性接触或分离该工作面，而能相对该基座发生至少一轴向的距离变动。该特征单元设置在该连接件上。该侦测单元连结于该基座。该侦测单元随着该连接件相对于该基座之该距离变动去侦测该特征单元之一参数差异，以利用该参数差异判断该基座之一底面和该工作面的该距离。
The present invention discloses a navigation device with a distance detection function, which can use a distance detection mechanism to detect the distance relative to a working surface. The distance detection mechanism includes a base, a connecting member, a characteristic unit and a detection unit. The connecting member is arranged on the base in a partially protruding manner. The connecting member selectively contacts or separates from the working surface, and can cause at least one axial distance change relative to the base. The characteristic unit is arranged on the connecting member. The detection unit is connected to the base. The detection unit detects a parameter difference of the characteristic unit as the distance of the connecting member relative to the base changes, so as to use the parameter difference to determine the distance between a bottom surface of the base and the working surface.
Description
Technical Field
The present invention provides a distance detection mechanism and a navigation device having the distance detection function, and more particularly, to a distance detection mechanism for detecting an accurate distance relative to a working surface and a navigation device having the distance detection function.
Background
The navigation device (such as an optical mouse) for a computer can judge the coordinate displacement by using the method of detecting the surface characteristics of the working surface, and can also judge whether the optical mouse is lifted relative to the working surface or not or is directly placed on the working surface according to the detection result of the surface characteristics. The conventional lift height detection technology is to determine the distance variation of the optical mouse relative to the working surface according to the parameter variation of the surface characteristics on the working surface, however, the material, surface roughness, dirt or dust of the working surface can affect the parameter value of the surface characteristics, and the uniformity of the lift height determination cannot be achieved for the working surfaces with different surface characteristics, so that the conventional lift height detection technology of the optical mouse cannot accurately detect the distance variation of the mouse relative to the working surface.
Disclosure of Invention
The present invention provides a distance detection mechanism for detecting an accurate distance relative to a working surface and a navigation device having a distance detection function, so as to solve the above-mentioned problems.
The present invention discloses a distance detecting mechanism capable of detecting a distance relative to a working surface, the distance detecting mechanism includes a base, a connecting member, a feature unit and a detecting unit. The connecting member is disposed on the base in a partially protruding manner. The connecting piece selectively contacts or separates the working surface, and can generate at least one axial distance change relative to the base. The characteristic unit is arranged on the connecting piece. The detection unit is connected to the base. The detecting unit detects a parameter difference of the feature unit along with the distance variation of the connecting piece relative to the base so as to determine the distance between a bottom surface of the base and the working surface by using the parameter difference.
The present invention further discloses a navigation device with distance detection function, which can detect the distance relative to a working surface. The navigation device comprises a shell, a coordinate detection module and a distance detection mechanism. The coordinate detection module is arranged in the shell and used for detecting the coordinate movement of the shell relative to the working surface. The distance detection mechanism is disposed in the housing. The distance detection mechanism comprises a base, a connecting piece, a characteristic unit and a detection unit. The connecting member is disposed on the base in a partially protruding manner. The connecting piece selectively contacts or separates the working surface, and can generate at least one axial distance change relative to the base. The characteristic unit is arranged on the connecting piece. The detection unit is connected to the base. The detecting unit detects a parameter difference of the feature unit along with the distance variation of the connecting piece relative to the base so as to determine the distance between a bottom surface of the base and the working surface by using the parameter difference.
The navigation device comprises a distance detection mechanism, wherein the distance detection mechanism detects the known characteristic unit on the connecting piece by using the detection unit, is not influenced by the material, surface roughness, dirt or dust of a working surface, and can accurately calculate the lifting height of the navigation device relative to the working surface through the distance change between the connecting piece and the base. The connecting piece of the distance detection mechanism protrudes out of the base in a movable mode to contact the working surface, and the connecting piece can synchronously generate distance variation along with the lifting or the putting down of the navigation device by matching with the elastic restoring force of the elastic element, so that the distance detection mechanism not only can be used for calculating the lifting height of the navigation device, but also can be used for pressing and leveling the working surface when the working surface is made of light and thin materials (such as paper) so as to improve the detection precision of the coordinate detection module. The navigation device utilizes the setting of threshold value to adjust the sensitivity of the distance detection mechanism, and the navigation device is not considered to be lifted up only when the connecting piece is completely separated from the working surface; as long as the distance between the connecting piece and the base changes and exceeds the threshold value, even if the connecting piece still touches the working surface, the connecting piece can still be interpreted as the navigation device to make the lifting action, and the coordinate value information of the coordinate detection module is stopped being output.
Drawings
Fig. 1 and 2 are structural side views of a navigation device at different stages of operation according to an embodiment of the present invention.
Fig. 3 and fig. 4 are schematic side views of possible variations of the navigation device according to the embodiment of the invention.
FIG. 5 is a side view of another possible variation of the navigation device according to the embodiment of the present invention.
Fig. 6 and 7 are structural side views of a navigation device according to different embodiments of the present invention.
The reference numbers illustrate:
| 10、10’ | |
| 14 | Coordinate detecting |
| 16 | |
| 18 | |
| 181 | |
| 20、20’ | Connecting |
| 22 | |
| 24 | Detecting |
| 26 | Sliding |
| 261 | One end of the sliding |
| 262 | Side surface of the sliding |
| 28 | |
| 281 | |
| 282 | |
| 283 | |
| 30 | |
| 32 | |
| 34 | |
| 36 | |
| 38 | Free end |
| 40 | Extension part |
| 401 | One end of the |
| 402 | One side of the extension part |
| S | Working surface |
| D1 | Axial direction |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Referring to fig. 1 and 2, fig. 1 and 2 are structural side views of a navigation device 10 at different stages of operation according to an embodiment of the present invention. The navigation device 10 may be an optical mouse, and the user operates the navigation device 10 to move on the working surface S, and determines the operation command to be input according to the movement track. The navigation device 10 includes a housing 12, a coordinate detection module 14, and a distance detection mechanism 16. The housing 12 is used for accommodating the coordinate detection module 14 and the distance detection mechanism 16, and provides protection against dust and water. The coordinate detecting module 14 can detect the characteristic pattern on the working surface S by using an optical detecting technique or detect the rotation information of the roller shaft by using a roller detecting technique, so as to determine the coordinate movement of the housing 12 relative to the working surface S. If the user slightly lifts the navigation device 10, i.e. the navigation device 10 is separated and does not contact the working surface S, the distance detection mechanism 16 can be used to detect the precise distance change and determine the lifting height of the navigation device 10 relative to the working surface S, thereby triggering other possible applications.
The distance detection mechanism 16 includes a base 18, a connector 20, a feature unit 22, and a detection unit 24. The base 18 is disposed at the bottom of the housing 12, or may be considered as a portion of the bottom of the housing 12. The connecting member 20 is disposed on the base 18 in a partially protruding manner; in this embodiment, the connecting member 20 includes a sliding portion 26 slidably disposed on the base 18 and a main body portion 28 connected to the sliding portion 26, wherein a first end 281 of the main body portion 28 protrudes from the bottom surface 181 of the base 18. The connector 20 can selectively contact or separate the work surface S and can be moved relative to the base 18 along the axis D1 as the navigation device 10 is raised or lowered. The feature unit 22 is disposed on the connecting member 20, and the detecting unit 24 is disposed on the supporting member 30 of the base 18. When the distance between the connecting member 20 and the base 18 varies, the detecting unit 24 detects the parameter difference of the characteristic unit 22, and determines the distance between the bottom surface 181 and the working surface S.
The aforementioned axial direction D1 is approximately parallel to the normal vector of the plane of the bottom surface 181. In addition, the connecting member 20 can be movably disposed on the base 18 in an inclined manner, so that the moving direction of the connecting member 20 relative to the base 18 intersects with the normal vector of the bottom surface 181. Alternatively, the moving direction of the connecting member 20 relative to the base 18 may be designed to be changed into an arc direction, a spiral direction, or the like; the connecting member 20 along other moving directions may be designed to partially protrude the side of the base 18 (or the housing 12) and extend to be curved to point to the bottom 181, in addition to partially protruding the bottom 181. It is within the scope of the present invention to design the distance detection mechanism 16 so long as the distance of the connecting member 20 varies when the navigation device 10 is lifted up or down relative to the working surface S.
The navigation device 10 further includes a controller 32 electrically connected to the coordinate detection module 14 and the distance detection mechanism 16. As shown in fig. 1, when the navigation device 10 is lifted up and gradually moves away from the working surface S, the elastic element 34 mounted on the main body 28 releases its elastic restoring force to move the connecting element 20 toward the outside of the base 18, and the detecting unit 24 detects the parameter difference of the characteristic unit 22 along with the movement of the connecting element 20, and knows the distance between the bottom surface 181 and the working surface S; when the distance is higher than the predetermined threshold value, the navigation device 10 is determined to be separated from the working surface S, and the controller 32 stops outputting the coordinate values generated by the coordinate detection module 14. As shown in fig. 2, when the navigation device 10 contacts and approaches the working surface S, the elastic element 34 is compressed to store elastic restoring force, the connecting element 20 moves into the base 18, and the detecting unit 24 detects the parameter difference of the feature unit 22 to obtain the distance between the bottom surface 181 and the working surface S; until the distance is lower than the threshold value, it is determined that the navigation device 10 is located on the working surface S, and the controller 32 can accordingly output the coordinate values generated by the coordinate detection module 14.
Fig. 3 and fig. 4 are schematic side views of possible variations of the navigation device 10 according to the embodiment of the invention. The elastic element 34 shown in fig. 1 and 2 is disposed on the main body 28, however, the elastic element 34 may be alternatively disposed on the sliding portion 26, that is, two ends of the elastic element 34 respectively abut against the sliding portion 26 and the base 18, as shown in fig. 3, and the practical application is not limited thereto. The feature cells 22 shown in fig. 1 and 2 are disposed at the second end 282 of the body portion 28; as the connecting member 20 moves, the detecting unit 24 detects the difference in size and/or brightness of the feature unit 22, for example, the feature unit 22 has a larger size and stronger brightness when approaching the detecting unit 24, and has a smaller size and weaker brightness when departing from the detecting unit 24, and the parameter difference is used to determine the distance variation between the bottom surface 181 and the working surface S. In addition, the feature unit 22 can be selectively disposed on the side surface 283 of the main body 28, as shown in fig. 4, the detecting unit 24 detects the displacement difference of the feature unit 22, for example, the navigation device 10 moves upward when approaching the working surface S and moves downward when separating the working surface S, so as to determine the distance variation between the bottom surface 181 and the working surface S.
Since the sliding portion 26 and the main body portion 28 belong to the interlocking objects fixed to each other, the feature unit 22 can be further selectively disposed on one end 261 or the side surface 262 of the sliding portion 26, as shown in fig. 5, fig. 5 is a structural side view of another possible modification of the navigation device 10 according to the embodiment of the present invention. The detecting unit 24 detects the size and/or brightness difference of the feature cells 22 (in a solid line pattern) on the end 261 or the displacement difference of the feature cells 22 (in a dotted line pattern) on the side surface 262, thereby determining the distance variation of the connector 20 in the axial direction D1 relative to the base 18.
Referring to fig. 6 and 7, fig. 6 and 7 are structural side views of a navigation device 10' according to various embodiments of the present invention. In each embodiment, elements having the same numbers as those in the other embodiments have the same structures and functions, and thus, the description thereof will not be repeated. As shown in fig. 6, the connecting member 20' may be a semi-spherical elastomer made of rubber, and the material and shape thereof are not limited thereto. The elastomer has an opposite fixed end 36 and a free end 38. The fixed end 36 is disposed on the base 18, and the free end 38 protrudes from the base 18 from the bottom surface 181. The feature unit 22 is mounted on the free end 38 at a position facing the detection unit 24. When the navigation device 10' contacts the work surface S, the elastomer is squeezed causing the free end 38 to retract into the base 18; when the navigation device 10' separates from the working surface S, the elastic body rebounds to move the free end 38 out of the base 18, so that the detecting unit 24 can determine the distance variation of the bottom surface 181 relative to the working surface S according to the size and/or brightness difference of the feature unit 22 on the free end 38.
As shown in FIG. 7, the connector 20' may further include an extension 40 disposed within the free end 38, the extension 40 extending from the free end 38 toward the fixed end 36, and the feature unit 22 may be selectively mounted at one end 401 or one side 402 of the extension 40. The feature unit 22 is disposed at the end 401, and as shown by the solid line pattern, the detecting unit 24 detects the size and/or brightness difference thereof to determine the distance variation of the connector 20' relative to the base 18; the feature unit 22 is disposed on the side 402, and as shown in the dotted line pattern, the detection unit 24 detects the displacement difference to obtain the information related to the distance variation.
In summary, the navigation device of the present invention includes a distance detecting mechanism, which uses a detecting unit to detect a known feature unit on a connecting element, and is not affected by the material, surface roughness, dirt or dust of the working surface, and can accurately calculate the lifting height of the navigation device relative to the working surface through the distance variation between the connecting element and the base. The connecting piece of the distance detection mechanism protrudes out of the base in a movable mode to contact the working surface, and the connecting piece can synchronously generate distance variation along with the lifting or the putting down of the navigation device by matching with the elastic restoring force of the elastic element, so that the distance detection mechanism not only can be used for calculating the lifting height of the navigation device, but also can be used for pressing and leveling the working surface when the working surface is made of light and thin materials (such as paper) so as to improve the detection precision of the coordinate detection module. The navigation device utilizes the setting of threshold value to adjust the sensitivity of the distance detection mechanism, and the navigation device is not considered to be lifted up only when the connecting piece is completely separated from the working surface; as long as the distance between the connecting piece and the base changes and exceeds the threshold value, even if the connecting piece still touches the working surface, the connecting piece can still be interpreted as the navigation device to make the lifting action, and the coordinate value information of the coordinate detection module is stopped being output.
Compared with the prior art, the distance detection mechanism of the invention designs the distance detection mechanism of the characteristic unit of which the detection unit can detect the position at the known position by utilizing the movable combination of the connecting piece and the base, not only can achieve accurate distance and control adjustment, but also has the advantage of pressing and finishing the working surface to improve the detection precision of the coordinate detection module.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (18)
1. A distance detecting mechanism capable of detecting a distance with respect to a working surface, the distance detecting mechanism comprising:
a base;
a connecting piece, which is arranged on the base in a partially protruding way and selectively contacts or separates the working surface so as to generate at least one axial distance change relative to the base;
a characteristic unit arranged on the connecting piece; and
a detecting unit connected to the base, the detecting unit detecting a parameter difference of the feature unit along with the distance variation of the connecting member relative to the base so as to determine the distance between a bottom surface of the base and the working surface by using the parameter difference, wherein the detecting unit detects a size difference, a brightness difference and/or a displacement difference of the feature unit.
2. The distance detecting mechanism of claim 1, wherein the distance detecting mechanism is disposed in a navigation device for detecting a relative distance between the navigation device and the working surface, and the connecting member partially protrudes from the bottom surface of the base facing the working surface.
3. The distance detection mechanism as claimed in claim 1, wherein said connecting member comprises:
a sliding part which is arranged on the base in a sliding way; and
a main body portion connected to the sliding portion, wherein a first end of the main body portion protrudes from the bottom surface of the base.
4. The distance detection mechanism as claimed in claim 3, wherein said connecting member further comprises:
and the elastic element is arranged on the sliding part or the main body part and provides elastic restoring force to drive the sliding part and the main body part to move relative to the base.
5. The distance detection mechanism as claimed in claim 3, wherein the feature unit is disposed at a second end of the main body portion different from the first end or disposed at a side surface of the main body portion.
6. The distance detection mechanism as claimed in claim 3, wherein the feature unit is disposed at one end of the sliding portion or disposed on a side surface of the sliding portion.
7. The distance detecting mechanism as claimed in claim 1, wherein the connecting member is an elastic body having a fixed end and a free end opposite to each other, the fixed end is disposed on the base, the free end protrudes from the base, and the feature unit is disposed on the free end.
8. The distance detection mechanism of claim 7 wherein said free end has an extension portion extending toward said fixed end, said feature being disposed at one end or side of said extension portion.
9. The distance detecting mechanism as claimed in claim 1, wherein the detecting unit determines the distance variation of the connecting member relative to the base in the at least one axial direction according to the parameter difference.
10. A navigation device with distance detection function, capable of detecting distance relative to a working surface, the navigation device comprising:
a housing;
the coordinate detection module is arranged in the shell and used for detecting the coordinate movement of the shell relative to the working surface; and
a distance detection mechanism disposed in the housing, the distance detection mechanism comprising:
a base located at the bottom of the shell;
a connecting piece, which is arranged on the base in a partially protruding way and selectively contacts or separates the working surface so as to generate at least one axial distance change relative to the base;
a characteristic unit arranged on the connecting piece; and
a detecting unit connected to the base, the detecting unit detecting a parameter difference of the feature unit along with the distance variation of the connecting member relative to the base so as to determine the distance between a bottom surface of the base and the working surface by using the parameter difference, wherein the detecting unit detects a size difference, a brightness difference and/or a displacement difference of the feature unit.
11. The navigation device of claim 10, further comprising:
a controller electrically connected to the coordinate detection module and the distance detection mechanism, wherein the controller outputs a coordinate value generated by the coordinate detection module when the distance is lower than a threshold value, and stops outputting the coordinate value when the distance is higher than the threshold value.
12. The navigation device of claim 10, wherein the connector comprises:
a sliding part which is arranged on the base in a sliding way; and
a main body portion connected to the sliding portion, wherein a first end of the main body portion protrudes from the bottom surface of the base.
13. The navigation device of claim 12, wherein the connector further comprises:
and the elastic element is arranged on the sliding part or the main body part and provides elastic restoring force to drive the sliding part and the main body part to move relative to the base.
14. The navigation device as set forth in claim 12, wherein the feature unit is disposed at a second end of the main body portion different from the first end or at a side surface of the main body portion.
15. The navigation device as set forth in claim 12, wherein the feature unit is disposed at one end of the sliding portion or at a side surface of the sliding portion.
16. The navigation device as recited in claim 10, wherein the connecting element is an elastic body having a fixed end and a free end opposite to each other, the fixed end is disposed on the base, the free end protrudes from the base, and the feature unit is disposed on the free end.
17. The navigation device of claim 16, wherein the free end has an extension portion extending toward the fixed end, the feature unit being disposed at one end or side of the extension portion.
18. The navigation device as set forth in claim 10, wherein the detecting unit determines the distance variation of the connecting member relative to the base in the at least one axial direction according to the parameter difference.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710097995.1A CN108459741B (en) | 2017-02-22 | 2017-02-22 | Distance detection mechanism and navigation device with distance detection function |
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| CN201710097995.1A CN108459741B (en) | 2017-02-22 | 2017-02-22 | Distance detection mechanism and navigation device with distance detection function |
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| CN108459741A CN108459741A (en) | 2018-08-28 |
| CN108459741B true CN108459741B (en) | 2021-01-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900894A (en) * | 2005-07-22 | 2007-01-24 | 世洋科技股份有限公司 | Computer mouse with automatic interruption of laser light |
| CN1936803A (en) * | 2005-09-23 | 2007-03-28 | 联想(北京)有限公司 | Screan cursor movement control method and cursor movement controller |
| CN106033263A (en) * | 2015-03-17 | 2016-10-19 | 原相科技股份有限公司 | Image processing method for detecting noise and navigation device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587093B1 (en) * | 1999-11-04 | 2003-07-01 | Synaptics Incorporated | Capacitive mouse |
-
2017
- 2017-02-22 CN CN201710097995.1A patent/CN108459741B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900894A (en) * | 2005-07-22 | 2007-01-24 | 世洋科技股份有限公司 | Computer mouse with automatic interruption of laser light |
| CN1936803A (en) * | 2005-09-23 | 2007-03-28 | 联想(北京)有限公司 | Screan cursor movement control method and cursor movement controller |
| CN106033263A (en) * | 2015-03-17 | 2016-10-19 | 原相科技股份有限公司 | Image processing method for detecting noise and navigation device thereof |
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