CN1114741A - Vernier controller with displacement detector - Google Patents
Vernier controller with displacement detector Download PDFInfo
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- CN1114741A CN1114741A CN 94108338 CN94108338A CN1114741A CN 1114741 A CN1114741 A CN 1114741A CN 94108338 CN94108338 CN 94108338 CN 94108338 A CN94108338 A CN 94108338A CN 1114741 A CN1114741 A CN 1114741A
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- displacement detector
- control device
- cursor control
- displacement
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Abstract
The present invention relates to a cursor controlling device with displacement detector. It includes a shell body; a rolling ball placed in said shell body which can make the cursor on the computer screen move in the specific direction by its roll; a luminous element placed in said shell body for producing a light source and a displacement detector placed in said sheel body which can receive the single-string signals with different voltage values produced by said light source. According to the order of those signals with different voltage values the moved displacement of said rolling ball can be judged.
Description
The present invention is a kind of cursor control device with displacement detector.
Cursor control device (as devices such as slide-mouse, trace balls) mainly is the moving direction and the distance of coming controlling computer screen vernier with the rotation of a spin; In cursor control device to the detection of spin moving displacement, generally except with X, being provided with of Y direction grating wheel detected vernier for computer should be moving in X or y-axis shift, still need detect the left and right directions of spin in X-axis, the mobile status of the above-below direction of Y-axis can correctly be controlled the displacement of screen vernier.
For spin in X, left and right, the upper and lower of Y-axis to displacement detecting two kinds of conventional apparatus are arranged.
First kind of conventional apparatus is to put two light emitting diodes and two phototransistors in X-direction, between these two light emitting diodes and this two phototransistor, be provided with X-ray grid wheel, the perforate that the surperficial circumference of X-ray grid wheel is provided with a plurality of comparable size can produce printing opacity when being subjected to this two light emitting diodes light irradiation, the effect of shading, this two phototransistor receives this printing opacity, light-shading effect, what produce through the processing of an integer circuit that two strings have a phase differential waits width pulse signal (as shown in Figure 1) again, the width pulse signal that waits of this two-phase potential difference will produce periodically (1,1) → (0,1) → (0,0) → (1,0) → (1,1) → ... state, with (1,1) is example, if the NextState (0 of (1,1) state, 1), the displacement that expression is turned right is if the NextState of (1,1) state is (1,0), the then expression displacement of turning left; Certainly, the detection mode of Y direction is identical with directions X.
The shortcoming of first kind of conventional apparatus is as follows:
1. in order to make, produce the pulse signal that two strings have phase differential on the Y-axis in X, then must be in X, Y-axis is respectively established two light emitting diodes and two phototransistors, has not only improved material cost, the man-hour of required cost when also having increased production and assembly.
2. in order accurately to produce best phase differential, light emitting diode, the perforate of grating wheel must be aimed at exactly with the relative position between phototransistor, and to adjust the sensitization angle, empty hyperplasia is produced the puzzlement of work flow.
3. the distance that is subject between each perforate on the grating wheel of two interpulse phase differential influences, and makes that the signal phase differential is not obvious, thus can't clearly distinguish left and right, upper and lower to; Moreover, if be subjected to extraneous interference (for example spread of voltage of light or RS232 port), also will make light emitting diode and phototransistor produce the ripple phenomenon, thereby produce the pulse signal of a succession of invalid pulsewidth.
Second kind of conventional apparatus is identical with the detection mode of first kind of conventional apparatus, all be to be the means of identification direction with the same width pulses that produce two string tool phase differential, unique difference is, first kind of conventional apparatus is with X, two light emitting diodes and two phototransistor branches on the Y-axis are arranged, second kind of conventional apparatus then is in X-direction, with single light emitting diode irradiation two phototransistors packaging together, Y-axis also is like this, this packing can reduce the material cost of two light emitting diodes and the packing cost of two phototransistors, but because its direction recognition means are identical with first kind of conventional apparatus, so also can't exempt the 2nd, 3 above-mentioned shortcoming.
Moreover, because second kind of conventional apparatus is to shine two phototransistors simultaneously with single light emitting diode, so it is not obvious for preventing the signal phase differential that light because of photodiode shines due to this two phototransistor simultaneously, must limit the distance between perforate, then the perforate number that can hold around the grating wheel surface promptly can't be too many, and understand as the personage who is familiar with this skill, the number of aperture of grating wheel institute tool the more, then resolution is higher, so, then the resolution of second kind of conventional apparatus promptly is restricted.
For improve conventional apparatus with two have phase differential to wait width pulse be the detection side to means due to shortcoming, the applicant once in a kind of pulse signal with the different frequency ranges of single string of previous proposition as the device that detects displacement, this device comprises: in X, Y direction each tool one light emitting diode and a phototransistor, between light emitting diode and phototransistor, grating wheel is arranged, the surface of this grating wheel is provided with the perforate of different in width, when light passes grating wheel, because the aperture widths difference on this grating wheel surface produces the printing opacity asynchronism(-nization), after so the signal that phototransistor is induced is handled via a signal processor again, just produce pulse as the different frequency ranges of single string of Fig. 2, the pulse of Fig. 2 be the ratio with perforate be 1: 2: 3 o'clock be example (as shown in Figure 3), the pulse condition of Fig. 2 presents (1,0) → (1,1,0) → (1,1,1,0) → (1,0) → (1,1,0) ... Deng variation, with (1,1,0) is example, if (1, what 1,0) occur behind the state is (1,1,1,0), then represent to turn right (on), if appearance is (1 thereafter, 0), then represents to turn left (descending).
Obviously, previous this patent application case that proposes of applicant and conventional apparatus really can be exempted 1,2,3 aforementioned disappearance in comparison.Yet though this patent case that the applicant applied for can have been improved most of shortcoming of conventional apparatus, so it still has a little flaw unavoidably.Owing to be that state with different pulse widths detects displacement, so must there be devices such as counter, working storage to write down the state of these pulse widths, if the user uses this cursor control device with general normal speed, still being unlikely too big problem produces, if but that the user moves the speed of this cursor control device is too slow, then the width of whole pulse will be drawn very longly, so then make counter, working storage may produce overflow (over flow), influenced the effect that detects; Moreover, though the case that the applicant last time applied for can be saved the cost of photodiode and phototransistor than conventional apparatus, the two cost of the counter of recording impulse width and working storage is more reduced.
In line with constantly bringing forth new ideas is the progressive motive spirit of enterprise, and the applicant again proposes the cursor control device that another kind has displacement detector, makes the cost of whole cursor control device and detects the boundary that effect can both reach a best.
The present invention's fundamental purpose is to provide a kind of cursor control device with displacement detector, to reduce production costs.
Another object of the present invention is to provide a kind of cursor control device with displacement detector, assembles man-hour to reduce.
The present invention's a purpose again is to provide a kind of cursor control device with displacement detector, to avoid the mistake because of the displacement detecting of phase differential due to not obvious.
The present invention is a kind of cursor control device with displacement detector, comprising: a housing; One spin is located in this housing, and the vernier on the computer screen is moved in specific direction because of its rotation; One light-emitting component is located in this housing, to produce a light source, can use light emitting diode; One displacement detector is located in this housing, and it can receive this light source and produce the different magnitude of voltage signals of single string, by the appearance order of this difference magnitude of voltage signal, can judge the moving displacement of this spin.Wherein this displacement detector is provided with at least three signals and produces media.
This displacement detector comprises: a photosensitive device, be located in this housing, which is provided with these signals and produce media: a special IC (ASIC), be located in this housing, in order to detecting the appearance order of this difference voltage signal, and according to the moving displacement of this vernier of appearance sequential control on computer screen of this difference magnitude of voltage signal.This special IC comprises: a sample circuit changes into a string clock pulse with this signal of going here and there different magnitudes of voltage; One comparator circuit transfers this signal of going here and there different magnitudes of voltage to digital signal; One controller is according to the appearance of this digital signal order and be subjected to the triggering of this clock pulse and obtain at least three kinds of digital states, can control the moving direction and the distance of this spin according to this digital state.
Another kind of displacement detector comprises: a photosensitive device which is provided with these signals and produces media; One microprocessor chip (Microprocessor) is located in this housing, in order to detecting the appearance order of this difference voltage signal, and controls moving direction and the distance of this vernier on computer screen in proper order according to the appearance of this difference magnitude of voltage mark.Wherein this microprocessor wafer is controlled moving direction and the distance of this vernier on computer screen with software.
Wherein this photosensitive device comprises: a grating wheel, to be located in this housing, and its surface is provided with these signals and produces media; One photo-sensitive cell is located in this housing, and it produces this a string different magnitude of voltage signals according to this media to the quantities received of this light source, can phototransistor for it.
Certainly, these media are located at the perforate on this grating wheel surface, and the effective light transmission area difference of these perforates.
Certainly, the present invention also can comprise a light shield sheet, is located at the surface of this grating wheel, to prevent the scattering of this light source, with the detection effect of De Gengjia.
Certainly, the present invention can comprise that also this cursor control device with the slow pick-up unit in position detects the method for displacement, and it comprises: receive this light source, and produce this according to each different light flux values that receive and go here and there different magnitude of voltage signals; Go here and there the appearance of each magnitude of voltage in the different magnitude of voltage signals according to this and detect the moving displacement of this spin in proper order.
The present invention gets following accompanying drawing of mat and detailed description, is understood in depth.
Fig. 1: be two equifrequency broad pulse synoptic diagram that conventional apparatus produced with phase differential.
Fig. 2: the pulse that is the single different frequency ranges that device produced last time applied for of applicant.
Fig. 3: one of the grating wheel surface perforate embodiment synoptic diagram that is the device last time applied for of applicant.
Fig. 4: be one of apparatus of the present invention preferred embodiment synoptic diagram.
Fig. 5: be one of grating wheel surface perforate of the present invention preferred embodiment synoptic diagram.
Fig. 6: be the preferred embodiment synoptic diagram of ASIC of the present invention.
Fig. 7: be the different magnitude of voltage signal of the single string of the present invention ASIC coherent pulse synoptic diagram.
Fig. 8: the relative number word state table of handling gained for different magnitude of voltage signals of the present invention via ASIC.
See also Fig. 4, it is one of the present invention preferred embodiment synoptic diagram, and it comprises: a housing 20; One spin 21; In X, Y-axis respectively has: a light-emitting component 22 (this sentences light emitting diode for it), one displacement detector 23, this displacement detector 23 comprise photosensitive device 231 and ASIC 232, and photosensitive device 231 comprises grating wheel 2311 and photo-sensitive cell 2312 (this sentences phototransistor for it) again; Wherein, the surface of grating wheel 2311 is provided with the perforate 23111,23112,23113 that produces media as signal, perforate 23111,23112,2,311 3 effective light transmission area (as shown in Figure 5) all inequality; In addition, this case respectively includes the surface that a light shield sheet (mask) 24 is arranged at grating wheel 2311 in the grating wheel of X, Y-axis, preventing the light source scattering, and can reach better effect.
The present invention is as follows in order to the method that detects displacement, when the light source that is produced when light emitting diode 22 is incident upon grating wheel 2311 in the rotation surperficial, because the effective light transmission area difference of perforate 23111,23112,23113, make phototransistor 2312 produce signal according to light quantity size that this perforate received as the different magnitude of voltage A of the single string of Fig. 7, B, C, ASIC232 detects signal A, the B of these different voltages, the appearance order of C, judge left and right, the upper and lower moving displacement of spin 21 according to this, and use the moving displacement of control vernier on computer screen.
Please consult Fig. 6,7 again, it is an embodiment synoptic diagram and the coherent pulse figure of ASIC232 of the present invention, and ASIC232 comprises sample circuit 2321, comparator circuit 2322 and controller 2323 again, reference voltage source Va, Vb, Vc, Va＜A wherein, A＜Vb＜B, B＜Vc＜C; When comparator circuit 2322 receives the voltage signal that phototransistor 2312 is responded to, the crest that sample circuit 2321 is taken a sample this voltage signal with differential mode forms with signal A, B, C is the square-wave signal clock of the distinct pulse widths of leading edge, with clock pulse as controller 2323, because the leading edge of clock triggers in the crest of voltage signal A, B, C, so can make controller 2323 really can obtain the crest value of voltage signal A, B, C, avoid because of failing the detection mistake of the moving direction due to the crest sampling.
So, when the signal of magnitude of voltage A, B, C volt enters, can obtain the digital state of Fig. 8 via the comparative result of comparator circuit 2322: A volt signal will produce (1,0,0) state via comparator circuit 2322, B volt signal will produce (1,1,0) state, and C volt signal will produce (1,1,1) state; These states are delivered to controller 2323, just can detect the moving direction and the displacement of spin 21; If controller 2323 is behind the state that receives A volt signal, and then be the state that receives B volt signal, then represent spin to the right (or on) move (a DPI of unit, dot per inch), if behind the A volt state and then be C volt state, then expression has been moved to the left a unit (or down).
In addition, in the behaviour in service of reality, may produce the irradiate light scope (incomplete as yet printing opacity) that perforated area does not pass completely through light emitting diode as yet, the user has promptly changed the moving direction of spin, make the perforate of grating wheel can't sense complete A or B or C voltage signal, so will produce a uncertain bit, make controller 2323 will change the displacement (Jitter) of a mistake of sense of displacement moment generation in the user, for fear of the issuable situation of this kind, controller 2323 can software control mode, when receiving first bit of change direction at every turn, can abandon this bit automatically, prevent because of the displacement detecting mistake of perforate printing opacity due to imperfect.
It should be noted that, because the present invention mainly is as the means that detect moving direction and displacement with the signal that produces the different magnitudes of voltage of single string, so in the shape of grating wheel perforate, the variation that size can have many kinds, for example square, circular, irregular shape ... or the like, as long as can reach the variation of perforated area.
Detect the design of displacement as for how utilizing this to go here and there different magnitude of voltage signals, all personages who is familiar with this skill are after description of the present invention after reading, should understand the various designs of its circuit, for example with microprocessor chip, cooperation software mode for it also can, so only locate for the circuit of Fig. 6 embodiment, and repeat no more the design that all the other may adopt for this displacement detector.Certainly, last time the used counting of this patent case of application and register be in comparison for the circuit that this kind merely differentiated voltage status and application, the required circuit structure of the utility model is comparatively simple, reaction time is shorter, can reduce the required cost of circuit more, and not have the situation generation of overflow.
In sum, the advantage under apparatus of the present invention and conventional apparatus are compared is as follows:
1. using single crosstalk to press signal is to differentiate the direction foundation, and does not need two pulse signals with phase differential, so X-axis, each needs a light emitting diode and phototransistor Y-axis, has saved material cost and assembles man-hour.
2. be not the identification means, so can not produce because of the indefinite shortcoming of identification (the 2nd, 3 of conventional apparatus the shortcoming as described above) of phase differential due to not obvious with two pulse phase differences.
3. so the present invention system,, contracts and knows aperture widths can increase perforate length as the foundation of adjusting magnitude of voltage with perforated area, under the situation of influence area value not, increases the number of grating wheel surface perforate, with the increase resolution.
The present invention must be thought and is to modify as all by the personage Ren Shi craftsman who is familiar with this skill, right neither scope of taking off as the desire protection of attached claims institute.
Claims (13)
1. cursor control device with displacement detector comprises:
One housing;
One spin is located in this housing, and the vernier on the computer screen is moved in specific direction because of its rotation;
One light-emitting component is located in this housing, to produce a light source;
It is characterized in that, also comprise
One displacement detector is located in this housing, and it can receive this light source and produce the different magnitude of voltage signals of single string, by the appearance order of this difference magnitude of voltage signal, can judge the moving displacement of this spin.
2. the cursor control device with displacement detector as claimed in claim 1 is characterized in that, this light-emitting component is a light emitting diode.
3. the cursor control device with displacement detector as claimed in claim 1 is characterized in that, wherein this displacement detector is provided with at least three signal media.
4. the cursor control device with displacement detector as claimed in claim 3 is characterized in that, wherein this displacement detector comprises:
One photosensitive device is located in this housing, which is provided with these signals and produces media; And
One special IC is located in this housing, in order to detecting the appearance order of this difference magnitude of voltage signal, and according to the moving displacement of this vernier of appearance sequential control on computer screen of this difference magnitude of voltage signal.
5. the cursor control device with displacement detector as claimed in claim 4 is characterized in that, this special IC comprises:
One sample circuit changes into a string clock pulse with this signal of going here and there different magnitudes of voltage;
One comparator circuit transfers this signal of going here and there different magnitudes of voltage to digital signal;
One controller according to the appearance of this digital signal order and be subjected to the triggering of this clock pulse and obtain at least three kinds of digital states, can be controlled the moving direction and the distance of this spin according to this digital state.
6. the cursor control device with displacement detector as claimed in claim 3 is characterized in that, wherein this displacement detector comprises:
One photosensitive device which is provided with these signals and produces media; And
One microprocessor chip is located in this housing, in order to detecting the appearance order of this difference voltage signal, and controls moving direction and the distance of this vernier on computer screen in proper order according to the appearance of this difference magnitude of voltage signal.
7. the cursor control device with displacement detector as claimed in claim 6 is characterized in that, wherein this microprocessor chip is controlled moving direction and the distance of this vernier on computer screen with software.
8. as the cursor control device one of as described in the claim 3-7, it is characterized in that wherein this photosensitive device comprises with displacement detector:
One grating wheel is located in this housing, and its surface is provided with these signals and produces media;
One photo-sensitive cell is located in this housing, and it produces this a string different magnitude of voltage signals according to this media to the quantities received of this light source.
9. the cursor control device with displacement detector as claimed in claim 8 is characterized in that wherein these media are located at the perforate on this grating wheel surface.
10. the cursor control device with displacement detector as claimed in claim 9 is characterized in that, wherein the effective light transmission area difference of these perforates.
11. the cursor control device with displacement detector as claimed in claim 10 is characterized in that, this photo-sensitive cell is a phototransistor.
12. the cursor control device with displacement detector as claimed in claim 1 is characterized in that, comprises that also a light shield sheet is located at the surface of this grating wheel, to prevent the scattering of this light source, with the detection effect of De Gengjia.
13. the detecting position shifting method with cursor control device of displacement detecting as claimed in claim 1 is characterized in that it comprises:
Receive this light source, and produce this according to each different light flux values that receive and go here and there different magnitude of voltage signals;
Go here and there the appearance of each magnitude of voltage in the different magnitude of voltage signals according to this and detect the moving displacement of this spin in proper order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94108338 CN1114741A (en) | 1994-07-08 | 1994-07-08 | Vernier controller with displacement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94108338 CN1114741A (en) | 1994-07-08 | 1994-07-08 | Vernier controller with displacement detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114741A true CN1114741A (en) | 1996-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94108338 Pending CN1114741A (en) | 1994-07-08 | 1994-07-08 | Vernier controller with displacement detector |
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| CN (1) | CN1114741A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507970A (en) * | 2011-10-31 | 2012-06-20 | 宁波杜亚机电技术有限公司 | Photoelectric type coder for measuring rotating direction and rotating speed of electric motor |
| CN104634993A (en) * | 2015-02-10 | 2015-05-20 | 广州广电运通金融电子股份有限公司 | Motor rotating direction and rotating speed detection device and method |
| CN109662877A (en) * | 2019-01-08 | 2019-04-23 | 奥佳华智能健康科技集团股份有限公司 | A kind of massager |
| CN113251999A (en) * | 2021-05-19 | 2021-08-13 | 河北建筑工程学院 | Real-time measuring method for monitoring deformation of building on line |
| CN117451084A (en) * | 2023-12-25 | 2024-01-26 | 科沃斯家用机器人有限公司 | Code wheel and optical coding device |
-
1994
- 1994-07-08 CN CN 94108338 patent/CN1114741A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507970A (en) * | 2011-10-31 | 2012-06-20 | 宁波杜亚机电技术有限公司 | Photoelectric type coder for measuring rotating direction and rotating speed of electric motor |
| CN104634993A (en) * | 2015-02-10 | 2015-05-20 | 广州广电运通金融电子股份有限公司 | Motor rotating direction and rotating speed detection device and method |
| CN109662877A (en) * | 2019-01-08 | 2019-04-23 | 奥佳华智能健康科技集团股份有限公司 | A kind of massager |
| CN113251999A (en) * | 2021-05-19 | 2021-08-13 | 河北建筑工程学院 | Real-time measuring method for monitoring deformation of building on line |
| CN113251999B (en) * | 2021-05-19 | 2022-08-02 | 河北建筑工程学院 | Real-time measuring device for monitoring deformation of building on line |
| CN117451084A (en) * | 2023-12-25 | 2024-01-26 | 科沃斯家用机器人有限公司 | Code wheel and optical coding device |
| CN117451084B (en) * | 2023-12-25 | 2024-03-15 | 科沃斯家用机器人有限公司 | Code wheel and optical coding device |
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