CN201293979Y - Capacitance-type sensor and induction type mouse - Google Patents
Capacitance-type sensor and induction type mouse Download PDFInfo
- Publication number
- CN201293979Y CN201293979Y CNU200820179101XU CN200820179101U CN201293979Y CN 201293979 Y CN201293979 Y CN 201293979Y CN U200820179101X U CNU200820179101X U CN U200820179101XU CN 200820179101 U CN200820179101 U CN 200820179101U CN 201293979 Y CN201293979 Y CN 201293979Y
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- induction
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- mouse
- induction zone
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Abstract
The utility model relates to a capacitance type sensor and an induction mouse, which comprises an induction area and a grounding area, the grounding area surrounds the periphery of the induction area, and a uniform isolating clearance is arranged between the induction area and the grounding area. The utility model utilizes a structure of surrounding the periphery of the induction area by the grounding area and the isolating clearance is arranged between the induction area and the grounding area. Further, the utility model is simple in structure of keys and easy to be manufactured, can avoid influence of a fringe field, and is accurate in induction signals. Additionally, the mouse of the induction sensor is accurate in induction signals, can resolve the problems that a left mechanical key and a right mechanical key of the existing mouse are short in service life and make noise during usage, can largely reduce the thickness of the mouse and brings convenience for users to carry.
Description
Technical field
The utility model relates to a kind of capacitance type sensor and induction type mouse.
Background technology
The core of all capacitance touch sensor-based systems all is one group and the interactional conductor of electric field.Below skin, be full of conductive electrolyte (a kind of dielectric that diminishes) in the tissue.Shou Zhi this conductive characteristic makes the capacitance touch sensing become possibility just.
Existing plane-parallel capacitor has two conductors, therebetween across one deck dielectric.Most of energy in this system directly accumulates between the capacitor plate.A little energy can be leaked to the space beyond the capacitor plate, is called as " fringing field " and reveal the formed electric field of energy by these.A part difficult problem of making practical capacitance type sensor is: need one group of printed conductor of design, above-mentioned fringing field is directed in the accessible actual induction of the user zone.Obviously, for this mode sensor, its " fringing field " scope is very little, it is big that sensor capacitance value when not having finger touch simultaneously becomes relatively, cause the conductive surface area of capacitive sensing system very little, the insufficient sensitivity of induction, therefore existing plane-parallel capacitor is not excellent choosing.
The utility model content
The utility model has overcome above-mentioned shortcoming, and a kind of simple in structure, capacitance type sensor and induction type mouse that reliability is high are provided.
The technical scheme in the invention for solving the technical problem is: a kind of capacitance type sensor, comprise induction zone and access area, and described access area is looped around the periphery of induction zone, is provided with a uniform external series gap between described induction zone and the access area.
Described induction zone can be circle or ellipse.
Described induction zone and access area can be provided with at grade.
Also can be provided with nonmetal overlayer on described induction zone and the access area.
Can be 15-25mm between a plurality of described induction zones at interval.
The diameter of described induction zone can be 8-15mm.
The width of described external series gap can be 0.3-1mm.
Described external series gap width can be 1: 10 with the ratio of cover thickness～and 1: 50.
A kind of induction type mouse adopts above-mentioned capacitance type sensor as button.
The utility model adopts in the periphery of induction zone around the structure of access area, and external series gap is set therebetween at the two, press-key structure is simple, be easy to make, compare and existing flat capacitor sensor, this patent has significantly reduced the volume and the manufacturing process of capacitive transducer again, and can avoid the influence of fringing field, and induction is sensitive more, accurate.And, the mouse of inductosyn in employing the utility model, induced signal is accurate, and can solve the short problem in serviceable life that has mouse left and right sides mechanical key now, the problem of the noise when using, but also can significantly reduce the thickness of mouse, make things convenient for the user to carry.
Description of drawings
Fig. 1 is a press-key structure synoptic diagram of the present utility model;
Fig. 2 is mouse control circuit theory diagrams in the utility model.
Embodiment
As shown in fig. 1, be structural representation of the present utility model, comprise induction zone 1 and access area 2 two parts, described access area 2 is looped around the periphery of induction zone 1, described induction zone 1 is circular, diameter is 10mm, and this is the average-size of adult's finger tip, also can be shape oval or that other suitable finger contacts are pressed.Be provided with a uniform external series gap 3 between described induction zone 1 and the access area 2, described induction zone and access area can be provided with at grade, and the surface is provided with overlayer (not indicating among the figure).The size of described external series gap 3 is important design parameters, and the width of suitable selection external series gap can well guarantee accuracy of sensors, if the gap is provided with too smallly, then too much electric field energy will directly be passed to ground; And if that the gap is provided with is too much, then uncontrollable energy is passed through tectal mode.When described external series gap 3 is selected the size of 0.5mm, can make fringing field see through the thick overlayer of 10mm well.And in that a plurality of buttons are adjacent when being provided with, each induction zone center 20mm of being separated by.Described induction zone and access area can be that printed circuit board (PCB) is realized by pcb board directly, and described overlayer can adopt nonmetallic materials such as glass, organic glass, resin to make, cover on the pcb board, can not influence the sensor sensing electric charge, make simultaneously that product is specious, feel is level and smooth.
About one of capacitance type sensor common misunderstanding be: in order to make system's operate as normal, finger must ground connection.In fact, finger is that by the reason of sensing it has electric charge, and this and its whether unsettled or ground connection is irrelevant fully.
Finger is placed near the conductive surface area that will increase capacitance type sensor of fringe field.The additional charge memory capacity that is produced by finger is exactly known finger capacitor C F.Sensor capacitance during no finger touch is represented with CP.Difference by CF and CP changes to know whether have actuation of keys to take place.
As shown in Figure 2, for with the control circuit schematic diagram of above-mentioned induced key structure applications in mouse, be connected among the touch chip U1 with terminals P AD1, the PAD2 that induction zone links to each other with the access area respectively, the induced charge signal is identified as push button signalling, after microprocessor U2 handles, the signals such as clicking, double-click, drag that analyzes is sent to main frame again.
The design of above-mentioned press-key structure on mouse, can be solved short problem and the problem of the noise when using in serviceable life of mouse left and right sides mechanical key, but also can significantly reduce the thickness of mouse, make things convenient for the user to carry.
More than capacitance type sensor provided by the utility model and induction type mouse are described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. capacitance type sensor, it is characterized in that: comprise induction zone and access area, described access area is looped around the periphery of induction zone, is provided with a uniform external series gap between described induction zone and the access area.
2. capacitance type sensor according to claim 1 is characterized in that: also be provided with nonmetal overlayer on described induction zone and the access area.
3. capacitance type sensor according to claim 1 is characterized in that: described induction zone and access area are provided with at grade.
4. according to claim 1 or 2 or 3 described capacitance type sensors, it is characterized in that: be spaced apart 15-25mm between a plurality of described induction zones.
5. according to claim 1 or 2 or 3 described capacitance type sensors, it is characterized in that: the width of described external series gap is 0.3-1mm.
6. according to claim 1 or 2 or 3 described capacitance type sensors, it is characterized in that: described induction zone is for circular or oval.
7. according to claim 1 or 2 or 3 described capacitance type sensors, it is characterized in that: the diameter of described induction zone is 8-15mm.
8. capacitance type sensor according to claim 2 is characterized in that: described external series gap width is 1: 10～1: 50 with the ratio of cover thickness.
9. an induction type mouse comprises button, it is characterized in that: described button adopts the capacitance type sensor described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820179101XU CN201293979Y (en) | 2008-11-18 | 2008-11-18 | Capacitance-type sensor and induction type mouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820179101XU CN201293979Y (en) | 2008-11-18 | 2008-11-18 | Capacitance-type sensor and induction type mouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293979Y true CN201293979Y (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820179101XU Expired - Fee Related CN201293979Y (en) | 2008-11-18 | 2008-11-18 | Capacitance-type sensor and induction type mouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293979Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729546A (en) * | 2013-12-20 | 2015-06-24 | 爱信精机株式会社 | Capacitive sensor electrode |
-
2008
- 2008-11-18 CN CNU200820179101XU patent/CN201293979Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729546A (en) * | 2013-12-20 | 2015-06-24 | 爱信精机株式会社 | Capacitive sensor electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20101118 |