CN1855989A - Scanner for regulating optimum speed - Google Patents
Scanner for regulating optimum speed Download PDFInfo
- Publication number
- CN1855989A CN1855989A CN 200510066497 CN200510066497A CN1855989A CN 1855989 A CN1855989 A CN 1855989A CN 200510066497 CN200510066497 CN 200510066497 CN 200510066497 A CN200510066497 A CN 200510066497A CN 1855989 A CN1855989 A CN 1855989A
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- scanner
- speed
- frequency
- sweep speed
- detecting
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Abstract
The invention is concerned with the scanner that can debug the best scanning speed, including: a temporary storage device that stores a parameter of the scanning speed; a frequency high-speed line that outputs a driving signal with the changeable frequency, the driving signal corresponds the different parameter of the scanning speed and outputs the driving signal with the corresponding frequency according to a prearrange mode; a step-motor that controls the scanning speed of the scanner, symplectic-joints to the driving signal and the working rotate speed correspond the frequency of the driving signal. The scanner need not be limit and set the scanner speed to be the lowest specification speed, it should be adjusted at the best working speed according to the equipment and the environment of the user. Moreover, the user can get the best scanning quality and adjust the scanning speed any time.
Description
Technical field
The present invention is relevant a kind of scanner, the particularly a kind of scanner that can debug optimum scanning speed.
Background technology
General now commercially available scanner, its scanning optical head drives by stepper motor.The sweep speed specification of the scanner of each model is certain.Step-out (Carriage Jam) is the incident problem of scanner, means to send drive signal to stepper motor, and stepper motor is not good because of its torsion cooperates with environment, and motor there is no thereupon and rotates, scanner thereby the phenomenon that is not driven.For preventing step-out, following considering arranged during scanner design: the design service life of (1) scanner is about 8 years 100000 times, for guaranteeing that scanner can both reach this requirement by the gross, needs usually the best operating speed of stepper motor is kept at least 30%.(2) error of the supply of electric energy (AC/DC changeover switch) is ± 5%, and the angle of rake error of motor and motor is ± 5%, and the error of the weight of load is ± 5%, if will stipulate a unified sweep speed, needs the poorest situation of comprehensive above-mentioned specification.(3) for being 5～45 ℃ in response to environment for use, need the stepper motor specification is kept again ± 5%.(4) for to put the Plane Angle difference in response to the user, need the stepper motor specification is kept again ± 5%.In sum, can make the scanner of same specification working properly for guaranteeing same sweep speed, the optimum speed that almost will keep stepper motor when design reaches more than 50%.
In addition, the image quality of scanning ratio is proportional to illumination * time for exposure, and sweep speed can be saved time soon, and sweep speed then can reach better image quality slowly.If the speed of scanning is unified, then can't adjust according to user's demand.
Fig. 1 is the calcspar of the stepper motor speed control circuit of a conventional scanners 10.The oscillator signal F of certain frequency that one frequency eliminator, 12 receptions, one crystal oscillator 11 is sent
c, through exporting a stepper motor drive signal D after the frequency elimination
mGive stepper motor 13.
Because the ratio of the frequency elimination of frequency eliminator 12 is for fixing, so selected when the specification of crystal oscillator 11, the running speed of its stepper motor 13 determines that thereupon therefore the sweep speed of scanner 10 also is fixed up.An easy mode can not adjusted the sweep speed of scanner according to behaviour in service, so working properly for all scanners, has only sweep speed is ordered selection into safest low speed.
Summary of the invention
For solving the above problems, the invention provides one and can debug the scanner of sweep speed, it comprises: a buffer, it stores the one scan speed parameter; One frequency is adjusted circuit, and its output one can change the drive signal of frequency, and this drive signal is according to a mode that is predetermined, corresponding this different sweep speed parameter and export the drive signal of corresponding frequency; And the stepper motor of this scanner scans speed of control, it is coupled to this drive signal and its working speed to frequency that should drive signal.
The scanner of debugging sweep speed of the present invention, this frequency is adjusted circuit and is comprised: a work period adjusting device, it is couple to the output of this buffer, and export the pressure regulation signal of a fixed frequency and fixed amplitude, the work period ratio of this pressure regulation signal is corresponding to the value of this buffer; One filter, it couples and filters this pressure regulation signal and exports a speed governing voltage, and this speed governing magnitude of voltage is corresponding with the work period ratio value of this pressure regulation signal; One voltage-controlled variable frequency oscillator, it is couple to this speed governing voltage and exports an oscillator signal, and the frequency of this oscillator signal is corresponding to this speed governing voltage; And a frequency eliminator, it is coupled to this oscillator signal and this oscillator signal is made frequency elimination handle this drive signal of back output.
The scanner of debugging sweep speed of the present invention further comprises a step-out arrangement for detecting, and this step-out arrangement for detecting can be turned down the value of this buffer to produce lower sweep speed when detecting this scanner generation step-out.
The scanner of debugging sweep speed of the present invention, this step-out arrangement for detecting comprises one scan time arrangement for detecting, it detects an optical scanning head of this scanner, move to a very first time length of one second scanning anchor point by one first scanning anchor point, this step-out arrangement for detecting relatively should very first time length whether greater than a reference time of the sweep speed of correspondence this moment, differentiate whether step-out of this scanner.
The scanner of debugging sweep speed of the present invention, this reference time is when same sweep speed, this optical scanning head of this scanner moved to for one second time of scanning anchor point by one first scanning anchor point under no desynchronizing state.
The scanner of debugging sweep speed of the present invention, this step-out arrangement for detecting comprises a waveform comparator, whether this waveform comparator is first waveform of an induction output output of this stepper motor relatively, identical with a reference waveform; This step-out arrangement for detecting is according to the comparative result of this waveform comparator, differentiates whether step-out of this scanner.
The scanner of debugging sweep speed of the present invention, this reference waveform are the waveform that this induction output of this stepper motor is exported in no desynchronizing state.
The step-out arrangement for detecting that the scanner that this can debug sweep speed provided by the invention comprises, it can detect whether step-out of this scanner; And when detecting this scanner generation step-out, the value of this buffer can be turned down, turn down the characteristic that rotating speed will increase torsion, improve the phenomenon of step-out by stepper motor to produce lower sweep speed.
Disclosed scanner and method according to the present invention, scanner needn't be defined when dispatching from the factory and sweep speed is made as minimum specification speed, but can debug out best effort speed according to user's equipment and environment.The user also can downgrade sweep speed at any time when seeking out preferable scanning quality.So each scanner all can be done best utilization according to its environment for use and demand.
Description of drawings
Fig. 1 is the calcspar of the stepper motor speed control circuit of a conventional scanners;
Fig. 2 is for debugging the calcspar of stepper motor speed control circuit of the scanner of sweep speed according to one of one embodiment of the invention one;
Fig. 3 is for debugging the calcspar of stepper motor speed control circuit of the scanner of sweep speed according to one of one embodiment of the invention two;
Fig. 4 is for debugging the calcspar of stepper motor speed control circuit of the scanner of sweep speed according to one of one embodiment of the invention three.
Embodiment
Fig. 2 is for debugging the calcspar of stepper motor speed control circuit of the scanner 20 of sweep speed according to one of one embodiment of the invention one.This scanner 20 comprises a buffer 22, and it stores the one scan speed parameter; One frequency is adjusted circuit 21, and its output one can change the drive signal D of frequency
m, this drive signal D
mAccording to a mode that is predetermined, corresponding this different sweep speed parameter and export the drive signal D of corresponding frequency
mAnd the stepper motor 23 of this scanner scans speed of control, it is coupled to this drive signal D
mAnd its working speed is to frequency that should drive signal, and the corresponding sweep speed that changes scanner 20.
Fig. 2 represents in addition among the present invention that this frequency wherein adjusts an embodiment of circuit 21, and its inside comprises a work period adjusting device 211, a filter 212, voltage controlled oscillator (Voltage Controlled Oscillator) 213 and one frequency eliminator 214.
One work period adjusting device, 211 outputs, one pressure regulation signal F
rThis pressure regulation signal F
rBe the square wave of a fixed amplitude and frequency, the ratio of its work period (Duty Cycle) is adjustable, and the ratio of this work period is relevant to the value of buffer 22.
This pressure regulation signal F
rExport a filter 212 to.Filter 212 filters this pressure regulation signal F
rMild for rising and falling, almost near the waveform of direct current.Filter 212 can be made of or more accurate filter circuit simple T type resistance-capacitance (R-C) circuit.Filter 212 outputs one speed governing voltage signal V
1This speed governing voltage signal V
1Value can be because pressure regulation signal F
rThe ratio of work period uprises when big, and at the ratio hour step-down in this high state time and cycle.The function of work period adjusting device 211 and filter 212 combinations reaches and is the switch type direct-current power supply converting circuit of common DC-DC (switching power regulator).This work period adjusting device 211 and this filter 212 synthetic regulators, the voltage output of this regulator is relevant to the value of this buffer 22.
The speed governing voltage signal V that voltage controlled oscillator 213 receives from filter 212
1, and export an oscillator signal F
cThis voltage controlled oscillator 213 is according to its specification difference, according to the speed governing voltage signal V of input
1Different magnitudes of voltage, the oscillator signal F of the frequency that output is corresponding
c
One frequency eliminator 214 receives the voltage controlled oscillator 213 oscillator signal F that sends
c, through exporting this stepper motor drive signal D after the frequency elimination
mGive stepper motor 23.
See through this embodiment of the invention,, just can adjust the sweep speed of scanner as long as see through the value that changes these scanner 20 inner buffers.
Fig. 3 is for debugging the calcspar of stepper motor speed control circuit of the scanner 30 of sweep speed according to one of one embodiment of the invention two.This scanner 30 comprises a buffer 32, and it stores the one scan speed parameter; One frequency is adjusted circuit 31, and its output one can change the drive signal D of frequency
m, this drive signal D
mAccording to a mode that is predetermined, corresponding this different sweep speed parameter and export the drive signal D of corresponding frequency
mAnd the stepper motor 33 of this scanner scans speed of control, it is coupled to this drive signal D
mAnd its working speed is to frequency that should drive signal, and the corresponding sweep speed that changes scanner 30.
This scanner 30 comprises a step-out arrangement for detecting 35 in addition, and this step-out arrangement for detecting 35 can be turned down the value of this buffer 32 to produce lower sweep speed when detecting these scanner 30 generation step-outs.
Step-out arrangement for detecting 35 is received the first scanning anchor point arrangement for detecting 351 and the second scanning anchor point arrangement for detecting 352.The first scanning anchor point arrangement for detecting 351 is sent a signal L
2Notice step-out arrangement for detecting 35 optical scanning heads 34 arrive or leave the first scanning anchor point.The second scanning anchor point arrangement for detecting 352 is sent a signal L
1Notice step-out arrangement for detecting 35 optical scanning heads 34 arrive or leave the second scanning anchor point.Step-out arrangement for detecting 35 can be learnt sweep speed from leaving the first scanning anchor point 351 to the time that arrives the second scanning anchor point 352 by calculating optical probe 34.Step-out arrangement for detecting 35 also can be learnt sweep speed from leaving the second scanning anchor point 352 to the time that arrives the first scanning anchor point 351 by calculating optical probe 34.Step-out arrangement for detecting 35 compares a time and the reference time that records.This reference time is under no desynchronizing state, and optical scanning head 34 leaves the second scanning anchor point 352 to the time that arrives the first scanning anchor point 351 certainly from leaving the first scanning anchor point 351 to the time that arrives the second scanning anchor point 352 or optical scanning head 34.This reference time can be respectively at a modular system when buffer 32 be inserted the individual scanning time parameter, measuring its optical scanning head 34 learns in the traveling time of the first scanning anchor point 351 and the second scanning anchor point 352, and be stored in the system for step-out arrangement for detecting 35 according to the value of detecting parameter sweep time in the buffer 32 at that time, read the corresponding reference time and compare.
Fig. 4 is for debugging the calcspar of stepper motor speed control circuit of the scanner 40 of sweep speed according to one of one embodiment of the invention three.This scanner 40 comprises a buffer 42, and it stores the one scan speed parameter; One frequency is adjusted circuit 41, and its output one can change the drive signal D of frequency
m, this drive signal D
mAccording to a mode that is predetermined, corresponding this different sweep speed parameter and export the drive signal D of corresponding frequency
mAnd the stepper motor 43 of this scanner scans speed of control, it is coupled to this drive signal D
mAnd its working speed is to frequency that should drive signal, and the corresponding sweep speed that changes scanner 40.
This scanner 40 comprises a step-out arrangement for detecting 45 in addition, and this step-out arrangement for detecting 45 can be turned down the value of this buffer 42 to produce lower sweep speed when detecting these scanner 40 generation step-outs.
This step-out arrangement for detecting 45 is couple to an induction output of stepper motor, receives an induced electromotive force signal F
BInduced electromotive force signal F
BFor driving input, stepper motor receives indivedual drive signal D
mAfterwards, because moving of axle center magnet changes magnetic flux and produces the waveform of electromotive force output in the coil of responding to output.Since when producing step-out, drive signal D at that time
mAfter the input, axle center magnet there is no and turns to next correspondence position, therefore responds to the induced electromotive force signal F of output output
BIt is an incomplete inductive waveform.As long as store under the no desynchronizing state, a reference waveform of output induced electromotive force.As induced electromotive force signal F
BShape and this reference waveform shape have big difference, can judge that this system produces step-out and reduces the value of sweep speed parameter in the buffer 42.
Disclosed scanner and method according to the present invention, scanner needn't be defined when dispatching from the factory and sweep speed is made as minimum specification speed, but can debug out best effort speed according to user's equipment and environment.The user also can downgrade sweep speed at any time when seeking out preferable scanning quality.So each scanner all can be done best utilization according to its environment for use and demand.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
D
m～drive signal
F
c～oscillator signal
F
r～pressure regulation signal
V
1～speed governing voltage signal
L
1, L
2～location detection signal
F
B～induced electromotive force signal
14,24,34,44～optical scanning head
Claims (7)
1, one can debug the scanner of sweep speed, it is characterized in that the described scanner of debugging sweep speed comprises:
One buffer, it stores the one scan speed parameter;
One frequency is adjusted circuit, and its output one can change the drive signal of frequency, and this drive signal is according to a mode that is predetermined, corresponding this different sweep speed parameter and export the drive signal of corresponding frequency; And
The stepper motor of one this scanner scans speed of control, it is coupled to this drive signal and its working speed to frequency that should drive signal, and the corresponding sweep speed that changes this scanner.
2, the scanner of debugging sweep speed according to claim 1 is characterized in that this frequency adjustment circuit comprises:
One work period adjusting device, it is couple to the output of this buffer, and exports the pressure regulation signal of a fixed frequency and fixed amplitude, and the work period ratio of this pressure regulation signal is corresponding to the value of this buffer;
One filter, it couples and filters this pressure regulation signal and exports a speed governing voltage, and this speed governing magnitude of voltage is corresponding with the work period ratio value of this pressure regulation signal;
One voltage-controlled variable frequency oscillator, it is couple to this speed governing voltage and exports an oscillator signal, and the frequency of this oscillator signal is corresponding to this speed governing voltage; And
One frequency eliminator, it is coupled to this oscillator signal and this oscillator signal is made frequency elimination handle this drive signal of back output.
3, the scanner of debugging sweep speed according to claim 1 is characterized in that:
Further comprise a step-out arrangement for detecting, this step-out arrangement for detecting can be turned down the value of this buffer to produce lower sweep speed when detecting this scanner generation step-out.
4, the scanner of debugging sweep speed according to claim 3 is characterized in that:
This step-out arrangement for detecting comprises one scan time arrangement for detecting, it detects an optical scanning head of this scanner, move to a very first time length of one second scanning anchor point by one first scanning anchor point, this step-out arrangement for detecting relatively should very first time length whether greater than a reference time of the sweep speed of correspondence this moment, differentiate whether step-out of this scanner.
5, the scanner of debugging sweep speed according to claim 4 is characterized in that:
This reference time is when same sweep speed, and this optical scanning head of this scanner moved to for one second time of scanning anchor point by one first scanning anchor point under no desynchronizing state.
6, the scanner of debugging sweep speed according to claim 3 is characterized in that:
This step-out arrangement for detecting comprises a waveform comparator, and whether this waveform comparator is first waveform of an induction output output of this stepper motor relatively, identical with a reference waveform; This step-out arrangement for detecting is according to the comparative result of this waveform comparator, differentiates whether step-out of this scanner.
7, the scanner of debugging sweep speed according to claim 6 is characterized in that:
This reference waveform is the waveform that this induction output of this stepper motor is exported in no desynchronizing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510066497A CN100588222C (en) | 2005-04-26 | 2005-04-26 | Scanner for regulating optimum speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510066497A CN100588222C (en) | 2005-04-26 | 2005-04-26 | Scanner for regulating optimum speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1855989A true CN1855989A (en) | 2006-11-01 |
| CN100588222C CN100588222C (en) | 2010-02-03 |
Family
ID=37195796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510066497A Expired - Fee Related CN100588222C (en) | 2005-04-26 | 2005-04-26 | Scanner for regulating optimum speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100588222C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780830A (en) * | 2011-05-12 | 2012-11-14 | 鸿富锦精密工业（深圳）有限公司 | Control method and system for flat-type scanner |
| CN105812608A (en) * | 2015-01-20 | 2016-07-27 | 精工爱普生株式会社 | Image reading apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11225499A (en) * | 1998-02-04 | 1999-08-17 | Fujitsu Takamisawa Component Ltd | Controller of stepping motor |
| JP2002131683A (en) * | 2000-10-27 | 2002-05-09 | Fuji Xerox Co Ltd | Optical scanner |
| JP2002232651A (en) * | 2001-02-06 | 2002-08-16 | Ricoh Co Ltd | Motor drive unit |
-
2005
- 2005-04-26 CN CN200510066497A patent/CN100588222C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780830A (en) * | 2011-05-12 | 2012-11-14 | 鸿富锦精密工业（深圳）有限公司 | Control method and system for flat-type scanner |
| CN105812608A (en) * | 2015-01-20 | 2016-07-27 | 精工爱普生株式会社 | Image reading apparatus |
| CN105812608B (en) * | 2015-01-20 | 2019-06-07 | 精工爱普生株式会社 | Image read-out |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100588222C (en) | 2010-02-03 |
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Owner name: LITE-ON TECHNOLOGY (CHANGZHOU) CO., LTD. Free format text: FORMER OWNER: GUANGBAO SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20131107 Owner name: GUANGBAO SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20131107 |
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Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: 213166 CHANGZHOU, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131107 Address after: 213166 Wujin high tech Industrial Development Zone, Jiangsu Province, Yang Lake Road, No. 88 Patentee after: LITE-ON TECHNOLOGY (CHANGZHOU) CO., LTD. Patentee after: Lite-On Technology Corporation Address before: Ruiguang road Taiwan Taipei City Neihu district China No. 392 22 floor Patentee before: Lite-On Technology Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20160426 |