CN103543584A - Accurate positioning device used in microfilm reading machine - Google Patents
Accurate positioning device used in microfilm reading machine Download PDFInfo
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- CN103543584A CN103543584A CN201310556117.3A CN201310556117A CN103543584A CN 103543584 A CN103543584 A CN 103543584A CN 201310556117 A CN201310556117 A CN 201310556117A CN 103543584 A CN103543584 A CN 103543584A
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- microfilm
- accurate positioning
- positioning device
- reading machine
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Abstract
The invention discloses an accurate positioning device used in a microfilm reading machine. The accurate positioning device comprises a photoelectric sensor, a control circuit, a film proceeding mechanism, an input device and a display device. The control circuit is respectively connected with the film proceeding mechanism, the photoelectric sensor, the input device and the display device. According to the accurate positioning device, a user can quickly and accurately rotate a microfilm to an appointed picture position. The display device is used for displaying values input by the user and the absolute position of a current picture.
Description
Technical field
The present invention relates to micrographics field, more particularly, relate to a kind of accurate positioning device being used in microfilm reading machine.
Background technology
Now widely used microfilm reading machine does not provide the automatically function of location of picture, can only rely on user and manually controls microfilm clockwise or be rotated counterclockwise, and rotational speed generally has fast and two gears at a slow speed.The picture that has 1200-2500 width left and right in a common dish microfilm, because picture quantity is more, user is difficult to navigate at short notice appointment picture, and microfilm reading machine is located to picture function automatically urgent requirement.
The microfilm reader of existing market is mainly type hand and power type, and type hand exists inconvenient problem with use.During reading, need to use hand moving microfilm roll film handle to retrieve, while reading like this, need to constantly carry out arm-shaking, the larger amount of exercise of needs while needing quick-searching, the complex structure of this handle, and roll film speed is wayward, and stationarity is poor.Power type adopts single motor to drive and mechanical clutch, utilizes the direction of carrying voltage both positive and negative polarity to change the roll film of motor.There is equally the poor problem of roll film speed positioning precision wayward and that cause.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of accurate positioning device being used in microfilm reading machine is provided.
A kind of accurate positioning device being used in microfilm reading machine of the present invention, by following technical proposals, be achieved, comprise photoelectric sensor, control circuit, film walking mechanism, input media and display device, control circuit connects respectively film walking mechanism, photoelectric sensor, input media and display device.
Described control circuit is the single piece plate system consisting of 51CPU.Photoelectric sensor adopts Omron EE-SX674.Input media is external digital keyboard.Display device is 47 segment numeral tube display screens.Film walking mechanism adopts stepper motor.
The invention has the beneficial effects as follows:
User can see the absolute position (being stored in the numerical value in counter) of the current picture of microfilm by display device, prior art is without this function.
This device realized a kind of can be automatically by the picture of user's appointment, the display device by microfilm reading machine is presented at the function in face of user, and prior art can only rely on the location of manually realizing picture completely.
Locating device of the present invention adopts photoelectric sensor, control circuit, film walking mechanism, counter, input media, display device.Can make the forward and reverse operation of microfilm roll film more stable, compact conformation, operation is directly perceived, good reliability, it is convenient to read.
User is when using microfilm reading machine to browse microfilm, by locating device of the present invention, can want to check the picture that needs definitely or relative position by input media (as keyboard) input, control chip drives film walking mechanism makes microfilm rotate to the direction of appointment, gauge point on recycling photoelectric sensor identification microfilm upper channel or lower channel, gauge point of every identification, photoelectric sensor will send a signal to control circuit, control circuit just can determine whether film walking mechanism continues to drive microfilm to rotate according to the signal of photoelectric sensor input like this, and the speed of rotating, until microfilm turns to the picture position of user's appointment, control circuit sends signal and makes the film walking mechanism microfilm that stops operating, make the user can be quick, exactly microfilm is turned to the position of specifying picture.The effect of display device is to show user's input numerical value and the absolute position of current picture.
Accompanying drawing explanation
Fig. 1 a is the upper channel that single file formula or double-row are used;
Fig. 1 b is the lower channel that single file formula or double-row are used;
Fig. 1 c is reciprocating or the binary channels of the reciprocating use of duplicate rows;
Fig. 2 is principle of the invention block diagram;
Fig. 3 is control flow chart of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that concrete exemplifying embodiment described herein, only for explaining the present invention, is not intended to limit the present invention.
As shown in Figure 2, the present invention includes photoelectric sensor, control circuit, film walking mechanism, input media and display device, control circuit connects respectively film walking mechanism, photoelectric sensor, input media and display device.Gauge point on photoelectric sensor identification microfilm upper channel or lower channel; Film moving device can in a clockwise direction or counterclockwise drive microfilm to rotate, and rotating speed is controlled; Display device shows user's input numerical value and the absolute position of current picture in microfilm; Use input media input to want to check absolute position or the relative position of picture.Described control circuit is the single piece plate system consisting of 51CPU.Photoelectric sensor adopts Omron EE-SX674.Input media is external digital keyboard.Display device is 47 segment numeral tube display screens.Film walking mechanism adopts stepper motor.
As shown in Figure 3, user is when using microfilm reading machine to browse microfilm, can want to check the picture that needs definitely or relative position by input media (as keyboard) input, control circuit drives film walking mechanism that microfilm is rotated to the direction of appointment, gauge point on recycling photoelectric sensor identification microfilm upper channel or lower channel is as Fig. 1 a, Fig. 1 b, shown in Fig. 1 c, gauge point of every identification, photoelectric sensor will send a signal to control circuit, control circuit just can determine whether film walking mechanism continues to drive microfilm to rotate according to the signal of photoelectric sensor input like this, and the speed of rotating, until microfilm turns to the picture position of user's appointment, control circuit sends signal and makes the film walking mechanism microfilm that stops operating, make the user can be quick, exactly microfilm is turned to the position of specifying picture.And can show corresponding position digital coding at counter.The effect of display device is the concrete digital code of input that shows user.Its Counter is used for recording picture coding, and the numerical value of its record is presented in display device.If the numerical value of current counter is 100, and the absolute position of user input is 200,200>100, control circuit drives film to rotate to positive dirction, until the numerical value of counter is to stop the rotation, so just picture is navigated to the position of the 200th width at 200 o'clock.If the absolute position of user input is 50,50<100, control circuit drives film to opposite spin, until the numerical value of counter is to stop the rotation at 50 o'clock.Relative position is that to take the current picture of counter be reference point, and as user inputs 50, the picture specific address that user wants to check should be 100+50=150, and as user's input-30, the picture specific address that user wants to check is 100-30=70.
The requirement of image mark (luminous point) the > > using according to standard GB/T-T23284-2009 < < micrographics 16mm and 35mm roll microfilm, in supporting the upper channel of microfilm of search function or lower channel, will create gauge point, this gauge point is used for index picture.On microfilm, gauge point has three kinds of positions: as shown in Figure 1a, and the upper channel that single file formula or double-row are used, as shown in Figure 1 b, the lower channel that single file formula or double-row are used, as shown in Fig. 1 c, the binary channels of the reciprocating or reciprocating use of duplicate rows.
Photoelectric sensor is comprised of transmitting terminal and receiving end two parts, and the variation that the variation of the power of light between transmitting terminal and receiving end can be converted into electric current is to reach the object of detection.The cold light source that it uses has infrared light, red light, green light and blue light etc., can noncontact, with no damage rapid state and action with controlling the materials such as various solids, liquid, the transparent body, black matrix, flexible body and smog.Have advantages of that volume is little, function is many, the life-span is long, precision is high, fast response time, detection distance and anti-optical, electrical, magnetic interference ability is strong.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the accurate positioning device being used in microfilm reading machine, it is characterized in that, comprise photoelectric sensor, control circuit, film walking mechanism, input media and display device, control circuit connects respectively film walking mechanism, photoelectric sensor, input media and display device.
2. the accurate positioning device being used in microfilm reading machine according to claim 1, is characterized in that, described control circuit is the single piece plate system consisting of 51CPU.
3. the accurate positioning device being used in microfilm reading machine according to claim 1, is characterized in that, photoelectric sensor adopts Omron EE-SX674.
4. the accurate positioning device being used in microfilm reading machine according to claim 1, is characterized in that, input media is external digital keyboard.
5. the accurate positioning device being used in microfilm reading machine according to claim 1, is characterized in that, display device is 47 segment numeral tube display screens.
6. the accurate positioning device being used in microfilm reading machine according to claim 1, is characterized in that, film walking mechanism adopts stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556117.3A CN103543584A (en) | 2013-11-11 | 2013-11-11 | Accurate positioning device used in microfilm reading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310556117.3A CN103543584A (en) | 2013-11-11 | 2013-11-11 | Accurate positioning device used in microfilm reading machine |
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| Publication Number | Publication Date |
|---|---|
| CN103543584A true CN103543584A (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310556117.3A Pending CN103543584A (en) | 2013-11-11 | 2013-11-11 | Accurate positioning device used in microfilm reading machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110427934A (en) * | 2019-06-27 | 2019-11-08 | 忆备缩微科技(北京)有限公司 | Film reads system and film image information processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408287A (en) * | 1980-05-23 | 1983-10-04 | Daniel Parisot | Automatic-search microfiche reader involving the use of a microcomputer |
| JPS61219032A (en) * | 1985-03-25 | 1986-09-29 | Minolta Camera Co Ltd | Information retrieving device |
| JPH02277034A (en) * | 1989-04-19 | 1990-11-13 | Fuji Photo Film Co Ltd | Microfilm retrieving device |
| JPH02278371A (en) * | 1989-04-19 | 1990-11-14 | Fuji Photo Film Co Ltd | Microfilm retrieving device |
| CN203616568U (en) * | 2013-11-11 | 2014-05-28 | 天津爱安特科技股份有限公司 | Accurate positioning device used in microfilm reading machine |
-
2013
- 2013-11-11 CN CN201310556117.3A patent/CN103543584A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408287A (en) * | 1980-05-23 | 1983-10-04 | Daniel Parisot | Automatic-search microfiche reader involving the use of a microcomputer |
| JPS61219032A (en) * | 1985-03-25 | 1986-09-29 | Minolta Camera Co Ltd | Information retrieving device |
| JPH02277034A (en) * | 1989-04-19 | 1990-11-13 | Fuji Photo Film Co Ltd | Microfilm retrieving device |
| JPH02278371A (en) * | 1989-04-19 | 1990-11-14 | Fuji Photo Film Co Ltd | Microfilm retrieving device |
| US5086231A (en) * | 1989-04-19 | 1992-02-04 | Fuji Photo Film Co., Ltd. | Microfilm retrieval system for retrieving a designated image frame |
| CN203616568U (en) * | 2013-11-11 | 2014-05-28 | 天津爱安特科技股份有限公司 | Accurate positioning device used in microfilm reading machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110427934A (en) * | 2019-06-27 | 2019-11-08 | 忆备缩微科技(北京)有限公司 | Film reads system and film image information processing method |
| CN110427934B (en) * | 2019-06-27 | 2024-04-16 | 忆备缩微科技(北京)有限公司 | Film reading system and film image information processing method |
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Application publication date: 20140129 |