CN2105099U - Automatic cureor reader (cn) - Google Patents
Automatic cureor reader (cn) Download PDFInfo
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- CN2105099U CN2105099U CN 91229515 CN91229515U CN2105099U CN 2105099 U CN2105099 U CN 2105099U CN 91229515 CN91229515 CN 91229515 CN 91229515 U CN91229515 U CN 91229515U CN 2105099 U CN2105099 U CN 2105099U
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Abstract
The utility model relates to an automatic cursor reader (CN), which is mainly composed of a photoelectric sensor, a data preprocessing unit, an operating panel, an electromechanical control unit, a mechanical transmission, and an interface. Circuit The photoelectric sensor comprises two sets of photoelectric tubes of 5 mm (or 5.08 mm and 7 mm, and can read two kinds of standard test papers with ordinary density and high density. The electromechanical control unit comprises two sheet overlapping detection devices and a kneading device, and can effectively avoid the phenomenon of sheet overlapping. The automatic cursor reader (CN) and a microcomputer can compose an integral automatic information reading processing system.
Description
The utility model is the OMR (OMR) of standardized examination paper or questionnaire being goed over examination papers about a kind of, particularly about the OMR of the automatic paper feed of a kind of energy.
Along with development of computer, people wish lot of data statistics, calculation analysis work are all given computing machine and handled, scoring, statistics and analysis for various papers are no exception, but because computing machine typing mode the earliest mainly is keyboard input and punched tape, expense costliness not only, speed is slow and with makeing mistakes easily.Therefore, from the sixties, data aggregation and input system that the increasing mechanisms of state such as English, U.S., day all are complementary at energy of searching and top-grade computer.OMR (OMR) first-to-market of Britain DRS company development becomes a kind of quick, reliable and easy data recording device very soon.This OMR is to utilize photoelectric sense technology to convert electric signal at the optical information that the release (for example standardized examination paper, entry blank, questionnaire etc.) of establishment is in advance gone up with blackings such as pencils, delivers to the microcomputer that is attached thereto again and carries out multi-functional processing processing.OMR adds that the microcomputer and the corresponding software that are attached thereto have just constituted a complete information reading disposal system.
Though the existing abroad suitable development of OMR, shortcoming such as they have complex structure, cost height, cost an arm and a leg is not suitable for applying in China.In order to overcome the problems referred to above, more domestic units are doing unremitting effort.
The purpose of this utility model just will overcome above-mentioned shortcoming, provides that a kind of structure is light, the bit error rate is low, the OMR of the multi-system.
Divide five parts according to OMR of the present utility model from functional structure, photoelectric sensor (1), data pretreatment unit (2), mechanical drive and Electromechanical Control unit (3), guidance panel (4) and special purpose interface (5), as shown in Figure 1:
1, photoelectric sensor
Photoelectric sensor is the critical component of reader, is used for detecting the mark of scribbling on the release, and each sensor is made up of infraluminescence pipe and infrared receiving tube and sensor sensing circuit.Each sensor is corresponding to one on data card row, thereby the data volume of sensor and density have determined the columns and the row distance of data card.The utility model is except that having 25 road 7mm(metric system low-density) the sensor array of spacing, also can be equipped with 35 road 5mm(metric system high density simultaneously) or 35 road 5.08(high density made in Great Britain) sensor array.Switching between two kinds of different densities arrays is by system software controls.
2, data pretreatment unit
The data pretreatment unit is the core of whole reader, and it connects photoelectric sensor and guidance panel, receives and deal with data and keyboard commands.By the Electromechanical Control unit, control the running of whole mechanical part.Computing machine is located the unit transmission by special purpose interface in advance to data and is resetted and working routine, and receives data from the data pretreatment unit.
3, guidance panel
The guidance panel of the utility model OMR is divided into front panel and rear panel.Rear panel comprises supply socket, power switch, fuse holder and 25 line communication interfaces.Front panel comprises state demonstration, data presentation and button, and yellow key definition is a start key, and red key definition is a stop key.Two bit data displays are used to show the number of read data card, and state shows the duty that is used for showing reader.
4, Electromechanical Control unit and mechanical drive
The function of mechanical driving part is that a folded release is automatically told one at every turn from the paper cabin, steadily, accurately, promptly sends into photoelectric sensor, and neat then is arranged in the splicing bucket.It comprises paper separating device, leads paper driving and splicing bucket dish etc.Whole power is from direct current micromotor and gear thereof.Direct current micromotor is directly controlled by the Electromechanical Control unit.The OMR drive system is by the adjustment of control module realization to reading rate, and it is best that computing machine and reader are cooperated.
5, special purpose interface
In order to improve the reading rate of reader, strengthen reader functionality, the utility model OMR adopts special purpose interface and computing machine to connect.
OMR of the present utility model just can be formed a complete information reading disposal system in conjunction with a microcomputer and corresponding software.In this system, the information that OMR adopts reflective photoelectric sensor spare to come the reading information card.The call format strictness of release need be well-designed, so must unifiedly draw printing.Information then is by examinee, the respondent stain with pencil or pen full-filling.OMR adopts the reflection type infrared horizontal survey of carrying out, and detects having or not and sending into computing machine of mark quickly and accurately.The information that computing machine is sent into OMR by special software is stored and is handled.
The major function of total system comprises edit file form, reading information card, checks and modification information, check and correction and statistics scoring.
1, edit file form
By computing machine display terminal edit file form, this form is identical with the form of release, is used for showing and canned data.
2, reading information card
Use OMR that the information in the release is read in computing machine, and press the file storage of appointment.
3, check and modification information
The information of reading in can show on screen by the form that edits, and for checking, and can revise the information that misreads by keyboard.
4, check and correction
Again with model answer of OMR input, provide every topic mark, computing machine is added up total points automatically.
The cursor reading processing system not only is applied to also can be applicable in poll, system evaluation and the statistical work in the processing of going over examination papers of standardization examination.
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model OMR.
Fig. 1 is the functional block diagram of the utility model OMR.
Fig. 2 is the mechanical transmission structure figure of the utility model OMR.
Fig. 3 is the electrical installation theory diagram of the utility model OMR.
Fig. 4 is computing machine (microcomputer) software flow pattern that cooperates the work of the utility model OMR.
Fig. 5 is the detailed circuit diagram of Electromechanical Control part.
Fig. 6 is the detailed circuit diagram of photoelectric sensing part.
Fig. 7 is the detailed circuit diagram of data preprocessing part.
Fig. 8 is the detailed circuit diagram of special purpose interface part.
Fig. 9 is the detailed circuit diagram of power unit.
Fig. 1 is the functional structure chart that embodies the present utility model thought, and the front has been described in detail it, so just seldom stated here.
Fig. 2 has shown a specific embodiment of the mechanical driving part of the utility model OMR.
In Fig. 2, what each label was represented thes contents are as follows:
6-holds in the palm carton, 7-paper platform axle, the 8-paper platform, 9-note detection photometer head, the 10-paper-sheets rolling wheel, the reverse presser feet of 11-, the reverse presser feet of 12-is adjusted nut, 13-infrared receiving tube I, 14-infrared transmitting tube I, 15-feed roller I, 16-feed roller II, the 17-cardboard of threading, the 18-paper feeding wheel, 19-Photoelectric Detection upper cover plate, 20-5mm is from reflection light barrier, 21-7mm is from reflection light barrier, the 22-paper output wheel, 23-infrared transmitting tube II, 24-infrared receiving tube II, 25-throws the paper wheel, 26-splicing box, 27-cone pulley I, the 28-reversing wheel, 29-rubs the paper motor with the hands, the anti-motor of rubbing with the hands of 30-, 31-walks paper plane, 32-cone pulley II, the 33-driving belt, 34-transmits motor.
Referring to Fig. 2, the utility model mechanically adopts the straight cutting paper feeding mode of most convenient, and is simple in structure, injects convenient to removely, and thin and thick is not limit.50 left and right sides papers are put into above the paper platform 8 of holder carton 6 at every turn, paper platform 8 can flexiblely rotate around paper platform axle 7, make paper can be close to paper-sheets rolling wheel 10, there is one from trans note detection photometer head 9 in the paper-sheets rolling wheel front, whether it detects paper (paper), as do not have paper, and being in waiting status by having or not paper test circuit (referring to Fig. 3) control entire machine, promptly several driving motors all can not rotate; If any paper, then machine can enter read state.After this, as long as click the starting switch (not shown), paper-sheets rolling wheel just transmits more than on paper to the right, certain clearance T(is arranged for example 0.5 second between every paper).Rotating counterclockwise by rubbing paper motor 29 with the hands of paper-sheets rolling wheel drives by deceleration cone pulley I, and behind paper-sheets rolling wheel 10, paper is just gone to away on the paper plane 31 from paper platform 8.After paper-sheets rolling wheel, being positioned at has a reverse presser feet and a reverse presser feet to adjust nut on the paper plane, and be positioned at a reversing wheel 28 is arranged under the paper plane, reversing wheel 28 directly cooperates with reverse presser feet 11 by the opening of walking on the paper plane 31, paper just passes through from the gap between presser feet 11 and reversing wheel 28, and oppositely presser feet adjustment nut 12 is used to adjust above-mentioned gap length.And then above-mentioned gap, the pick-up unit I of re-opening is arranged, it is made up of infrared transmitting tube I 14 and infrared receiving tube I 13, when re-opening, the transmitted light that infrared receiving tube I 13 receives dies down, and this signal starts the anti-motor 30 of rubbing with the hands by the test circuit I (referring to Fig. 3) of re-opening, and drives reversing wheel 28 by belt again, rub with the hands paper is counter, the paper of re-opening must not be walked to the right.After reverse presser feet 11, feed roller I 15, feed roller II 16 and paper feeding wheel 18 are arranged, their effect is stretching paper, entirely deliver to 5mm from reflection light barrier 20 and 7mm on reflection light barrier 21.5mm(also can adopt 5.08mm), 7mm is meant the spacing between every row cursor (being each photoelectric tube).5mm has 35 photoelectric tubes from reflection light barrier 20, and it is used for highdensity paper reads, and 7mm has 25 photoelectric tubes from reflection light barrier 21 1, and it is used for the reading of common density paper.It is the synchronous head information Control that is subjected on the paper that the optical information of above-mentioned photoelectric tube reads.A Photoelectric Detection upper cover plate 19 is arranged on above-mentioned photoelectric tube, the cardboard 17 of threading for paper smoothly by photoelectric tube, avoid paper to run away or block being provided with.After photoelectric tube 20,21, a paper output wheel 22 and a throwing paper wheel 25 are arranged.Paper feeding wheel 18 and paper output wheel 22 all pass through 32 transmissions of cone pulley II by driving motor 34, and 16 of feed roller I 15 and feed roller II are to pass through bel-drivenn by paper feeding wheel 18, and throwing 25 on paper wheel is to pass through bel-drivenn by paper output wheel.Among Fig. 2, all doublets are all represented belt (shown in 33).Also be provided with the pick-up unit II of re-opening between paper output wheel 22 and throwing paper wheel 25, it is made up of infrared transmitting tube II 23 and infrared receiving tube II 24, and this device detects re-opening again.If re-open, infrared receiving tube 24 detected transmitted lights die down, and do to shut down by test circuit II (referring to Fig. 3) the order machine of re-opening and handle, and promptly stop after dishing out such as re-opening reading, wait handle this well and re-open after, press starting switch, begin reading again.Receive by the splicing box from throwing paper wheel 25 papers of dishing out.In Fig. 2, M represents main circuit board.
Elaborate below in conjunction with the circuit diagram of Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9 electrical installation principle to the utility model OMR shown in Figure 3.
Referring to Fig. 3, the utility model comprises on electric: special interface circuit 5, Electric Machine Control interface 35, passage decoding and 5mm/7mm select circuit 36, high-speed a/d data acquisition 37, control signal photoelectricity coupled circuit 38, speed control circuit 39, D/A change-over circuit 40, amplification driving circuit 41, channel selection circuit 42, buffer amplifier circuit 43, power supply 44, self-checking circuit 45, have or not paper test circuit 46, the test circuit I 47 of re-opening, the test circuit II 48 of re-opening, and photometer head circuit 49, also comprise in addition and rub paper motor 29 with the hands, anti-motor 30 and the driving motor 34 rubbed with the hands.Three motors were mentioned in the description to Fig. 2 in the above, and they also calculate a mechanically operated part.Special interface circuit 5(is referring to Fig. 8) directly be inserted on the bus expansion slot of the computing machine (microcomputer) that links to each other with this machine.This special interface circuit has following characteristics: 1) port address modification able to programme, easy, applied widely, avoid clashing with other user I/O equipment of computing machine; 2) the GAL device is adopted in decoding, and circuit is succinct, improved job stability, also reduced some unnecessary debugging work; 3) increase the decoded signal buffering, more reduced the fault chance.
In Fig. 3, except that 3 motors and special interface circuit, remaining circuit all is installed on the mainboard M shown in Figure 2.
Computing machine is by special interface circuit 5 and bus and Electric Machine Control interface circuit 35, passage are deciphered and 5mm/7mm selects circuit 36, high-speed AD data acquisition circuit 37 to carry out two-way information transmission, and these information comprise control command signal, address signal and data-signal.The control signal that control signal photoelectricity coupled circuit 35 receives from Electric Machine Control interface 35, it comprises whether above-mentioned three motors of control are connected and the control signal of rotating speed.Referring to Fig. 5, M
1, M
2And M
3Be respectively to rub paper motor 29, anti-motor 30 and driving motor 34, the IS of rubbing with the hands with the hands
04And IS
05Be respectively above-mentioned three photoelectric coupled devices whether motor is connected of control.IS
01And IS
02Then be used to transmit the motor speed control signal and give speed control circuit 39, speed control circuit 39 is by reverser U
1AAnd U
1BForm.40 of D/A change-over circuits are by counter U
2AAnd U
2BForm.By the signal of D/A change-over circuit 40 via amplifier U
3With complex pipe Q
4Behind the amplification driving circuit of forming 41, above-mentioned three motors are carried out speed control.
Now referring to Fig. 2, Fig. 3 and Fig. 6.Have or not paper test circuit 46 to comprise photocoupler D
5(being the note detection photometer head among Fig. 2), amplifier U
11ADeng.The test circuit I 47 of re-opening comprises infrared transmitting tube D
2(being 14 among Fig. 2), infrared receiving tube D
1(being 13 among Fig. 2) and comparison amplifier U
11CDeng.The test circuit II 48 of re-opening comprises infrared transmitting tube D
4(being 23 among Fig. 2), infrared receiving tube D
3(being 24 among Fig. 2) and comparison amplifier U
11BDeng.Photometer head circuit 49 comprises first group from reflection light barrier DS
1-DS
25(be among Fig. 2 7mm from reflecting photoelectric tube 21) and second group are from reflection light barrier HS
1-HS
35(be among Fig. 2 5mm from reflection light barrier 20).Above-mentionedly have or not paper test circuit 46, the signal of two groups of photoelectric tubes outputs of the test circuit I 47 of re-opening, the test circuit II 48 of re-opening and photometer head circuit 49 all delivers to channel selection circuit 42.By selecting circuit 42 by on-off circuit U
1-U
5Form.Channel selection circuit 42 according to the control signal of selecting circuit 36 from passage decoding and 5mm/7mm respectively each road input signal of gating deliver to buffer amplifier circuit 43.
Referring to Fig. 7, buffer amplifier 43 is by amplifier U
7Etc. formation, passage decoding and 5mm/7mm select circuit by U
6, U
12And U
13Form.Deliver to high-speed a/d data acquisition circuit 37 from the data-signal of buffering amplifying circuit 43, deliver to computing machine by special interface circuit again and store, work such as statistics and calculating.High-speed a/d data acquisition circuit 37 comprises mu balanced circuit U
8, A/D transducer U
9And U
10Deng.
Referring to power unit shown in Figure 9, for fear of the interference between motor and other circuit, independent power supply is adopted in the power supply of motor, and it comprises rectifier bridge D
5, mu balanced circuit U
4With mu balanced circuit U
5Deng.The power supply of other parts comprises rectifier bridge D
4, mu balanced circuit U
6With mu balanced circuit U
7Deng.
In Fig. 3, have or not paper test circuit 46, the output signal elder generation process channel selecting 42 of re-open the test I 47 and the test circuit II 48 of re-opening etc. sent steering order again to the connection of Electric Machine Control interface 35 with the control motor after delivering to calculating, also can directly above-mentioned output signal be delivered to control signal optically coupled circuit 38, with the connection of control motor.
Software flow pattern to Fig. 4 describes below, the workflow of the information reading disposal system that this flow process is made up of the utility model OMR and microcomputer.After microcomputer was started working, the first step judged whether OMR connects machine, if do not have, showed on the display " OMR does not connect ", if connected machine, then entered next step; Second step was provided with the number of OMR (OMR) speed, information paperboard form and continuous read message card; The 3rd step starter motor makes reader enter read state; The 4th step judged whether then to enter next step if any paper by paper, then stopped motor as no paper, then got back to for the 3rd step after pressing manual actuation of button; The 5th step judged whether it is synchronous head, then entered next step in this way, as not being then to proceed for the 5th step; The 6th step was read data line (i.e. row's photoelectric tube value); The 7th step judged whether it is last column, then entered next step in this way, as not being then to get back to for the 5th step; The 8th step was detected each data that read above; Whether the 9th step judged the data that detected greater than threshold value, and greater than threshold value, this point that is then detected is scribbled to be to be scribbled a little as these data, otherwise for not scribbling a little; The tenth step was sent buffer zone with the result; The 11 step judged whether it is last, then entered next step in this way, otherwise got back to for the 4th step; The 12 step stopped motor, deposits the result in floppy disk and carries out various data processing (as to every paper scoring, calculating average achievement or the like) and printout, last power cut-off.As by embodiment shown in Figure 3, after the 6th step, then carry out first judgement of re-opening, then start the anti-motor of rubbing with the hands if any re-opening, re-opening as nothing then enters second judgement of re-opening, and if any then entering the shutdown processing, re-opening as nothing then enters above-mentioned the 7th step.
Above various aspects of the present utility model have been carried out comprehensive explanation, have had following characteristics according to above-mentioned the utility model OMR:
1, isolates on motor and the remaining circuit electrical property
Motor has the power supply of oneself, and its control signal is coupled from mainboard by photoelectricity.Reduce the interference of noise of motor like this, make the data of collection more accurate, reduced the bit error rate mimic channel; On the other hand, avoid interference, prevent maloperation (as incorrect shutdown, the deadlock phenomenon) digital circuit.
2, the speed of motor is divided into 256 grades, makes the user can select the chart drive speed of going over examination papers of the best according to the machine (computing machine) of oneself.
3, have two test circuits of re-opening, make the calculating function more effectively handle the phenomenon of re-opening.
When re-opening appears in stranding paper, start the anti-motor of rubbing with the hands to avoid the photometer head (first test) of re-opening.When re-opening photometer head (second test), computer control stops to rub with the hands paper, runs through following examination paper, and two examination papers are all sent, and shut down, and the prompting user handles accordingly.
4, the A/D pulsatile once promptly adopt currency, improve processing speed.
5, has self-checking circuit
6, the channel number of photometer head need not be tabled look-up when making the selective light dateline according to its physical location series arrangement, has improved processing speed.
7, adopt the CD4051 analog switch to substitute CD4067, reduce the wiring difficulty, make the possible series arrangement of channel number of photometer head, and reduced the plate area.
8, the reference source of A/D adopts independent voltage stabilizing, to its interference, makes collection result more accurate when avoiding remaining circuit work, reduces the bit error rate.
9, the output of photoelectricity light directly links to each other with analog switch, removes LM347 buffering unnecessary.Reduce cost, also reduce failure rate.
Claims (3)
1, a kind of automatic OMR, it is characterized in that it is by photoelectric sensor (1), data pretreatment unit (2), guidance panel (3), Electromechanical Control unit and mechanical drive (4) and special interface circuit compositions such as (5), data pretreatment unit (2) will be from photoelectric sensor (1), after the various signals of guidance panel (3) and Electromechanical Control unit and mechanical drive (4) or data are carried out pre-service, by in the computing machine that special interface circuit (5) is delivered to this reader is connected, data pretreatment unit (2) is also delivered to guidance panel (3) and Electromechanical Control unit and mechanical drive (4) with the steering order that computing machine comes again.
2,, it is characterized in that said Electromechanical Control unit and mechanical drive (4) comprise holder paper apparatus (6,7,8), paper twisting device (10,27,29), reverse twist device (11,12,28,30), paper feeder (15,16,17,18,32,33,34), sheet delivery (22,25,26), note detection photometer head (9), the pick-up unit I of re-opening (13,14) and the pick-up unit II of re-opening (23,24) according to the described automatic OMR of claim 1.
3, according to the described automatic OMR of claim 1, it is characterized in that said photoelectric sensor comprise 5mm from reflection light barrier (20) and 7mm from reflection light barrier (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91229515 CN2105099U (en) | 1991-12-02 | 1991-12-02 | Automatic cureor reader (cn) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91229515 CN2105099U (en) | 1991-12-02 | 1991-12-02 | Automatic cureor reader (cn) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2105099U true CN2105099U (en) | 1992-05-20 |
Family
ID=4934999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91229515 Granted CN2105099U (en) | 1991-12-02 | 1991-12-02 | Automatic cureor reader (cn) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2105099U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156852A (en) * | 2011-05-05 | 2011-08-17 | 南昊（北京）科技有限公司 | Classroom teaching quality assessment instrument |
| CN103279728A (en) * | 2013-05-13 | 2013-09-04 | 南昊（北京）科技有限公司 | Cursor reader |
| CN105022847A (en) * | 2015-08-19 | 2015-11-04 | 河北南昊高新技术开发有限公司 | Data collecting method based on multi-terminal single data collector |
| CN108830119A (en) * | 2018-04-18 | 2018-11-16 | 南京怀宇科技有限公司 | The detection method and device of optical character reader (OCR) |
-
1991
- 1991-12-02 CN CN 91229515 patent/CN2105099U/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156852A (en) * | 2011-05-05 | 2011-08-17 | 南昊（北京）科技有限公司 | Classroom teaching quality assessment instrument |
| CN103279728A (en) * | 2013-05-13 | 2013-09-04 | 南昊（北京）科技有限公司 | Cursor reader |
| CN105022847A (en) * | 2015-08-19 | 2015-11-04 | 河北南昊高新技术开发有限公司 | Data collecting method based on multi-terminal single data collector |
| CN108830119A (en) * | 2018-04-18 | 2018-11-16 | 南京怀宇科技有限公司 | The detection method and device of optical character reader (OCR) |
| CN108830119B (en) * | 2018-04-18 | 2021-11-16 | 南京怀宇科技有限公司 | Detection method and device of cursor reader |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |