CN108717316B - Anti-cheating computer question-making system - Google Patents
Anti-cheating computer question-making system Download PDFInfo
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- CN108717316B CN108717316B CN201810477287.5A CN201810477287A CN108717316B CN 108717316 B CN108717316 B CN 108717316B CN 201810477287 A CN201810477287 A CN 201810477287A CN 108717316 B CN108717316 B CN 108717316B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B7/00—Electrically-operated teaching apparatus or devices working with questions and answers
- G09B7/06—Electrically-operated teaching apparatus or devices working with questions and answers of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers
- G09B7/066—Electrically-operated teaching apparatus or devices working with questions and answers of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers with answer indicating cards, blocks
Abstract
The invention discloses an anti-cheating computer question-making system which comprises an external database, a USB data connector, a fixing frame, an electronic information extractor, a binding post, a transformer, a water cooling box, a data processor, a flicker indicator, a side display screen, a main display screen, an assembly positioning frame, a fixed keyboard, an operating button, a light supplementing lamp, an object stage, a wharf sweeping head, an image information processor, an eight-station coding strip, a partition code, a question answering area, a heat dissipation grid and a work indicating lamp. The invention can reduce the effect of high-tech cheating, ensure that the high-tech cheating can not transmit answers completely, ensure that the cheating of the examinees is invalid, effectively control the cheating phenomenon of the examinees, ensure that the examination is fair and reasonable, and the scores of the examinees reflect the true level of the examinees, thereby providing accurate talents selection basis for human units.
Description
The technical field is as follows:
the invention relates to an anti-cheating computer question making system, and belongs to the field of computer equipment.
Background art:
along with the continuous popularization and promotion of basic education in China, the proportion of educated population in China is higher and higher, and examinations are also along with the coming of the times of students and are called as an essential part in the learning process of the students.
During examination, examination in the middle period of small to primary school and middle school, examination in the middle period of large to high school and examination by researchers, and domestic various large-scale examinations are mostly carried out by coating answer sheets, namely, examinees coat answers of examination questions on the answer sheets, then the answer sheets are processed by the computer according to standard answers, scores of the part of examination questions of the examinees are given, the defect of the computer question setting system is obvious, cheating is easy to progress, the answers are conveniently transmitted among the examinees during the examination period along with the continuous progress of a micro communication system, and especially at the present of high-tech development, one mobile phone short message can transmit all the answers to a plurality of examinees beyond a thousand miles. Therefore, the related technical problems are researched, the cheating phenomenon of the examinees is effectively controlled, the examination is fair and reasonable, the scores of the examinees reflect the real level of the examinees, accurate talents are provided for the personnel units to choose, the cheating behaviors of some people through high technology are difficult to avoid, and the question setting system is difficult to prevent micro communication.
The invention content is as follows:
aiming at the problems, the technical problem to be solved by the invention is to provide an anti-cheating computer question making system.
The device comprises an external database, a USB data connector, a fixing frame, an electronic information extractor, a binding post, a transformer, a water cooling tank, a data processor, a flicker indicator, a side display screen, a main display screen, an assembly positioning frame, a fixed keyboard, an operating button, a light filling lamp, a carrier, a sweeping terminal, an image information processor, an eight-station coding bar, a partition code, a question answering area, a heat dissipation grid and a work indicator lamp, wherein the USB data connector is arranged above the external database, the external database is connected with the data processor through the electronic information extractor, the fixing frame is arranged between the external database and the electronic information extractor, the water cooling tank is arranged above the data processor, the transformer is arranged on the side of the water cooling tank, the binding post is arranged on the transformer, the heat dissipation grid is arranged on the top of the water cooling tank, the work indicator lamp is arranged on the side of the heat dissipation grid, be provided with the main display screen in the middle of the data processor, main display screen top is provided with the scintillation indicator, main display screen side is provided with the side display screen, the data processor below is provided with fixed keyboard, be provided with operating button on the fixed keyboard, the both sides limit of fixed keyboard is provided with the assembly locating rack, the light filling lamp sets up in the objective table top, the objective table below is provided with sweeps the pier, it is connected with image information processor to sweep the pier, image information processor is connected with data processor, the subregion code setting is between eight station coding strip and answer district.
Preferably, the type of the data processor is the type of the core processor is UNL2003N, the external database is in bidirectional electrical signal connection with the USB data connector, the external database is screwed with the fixed frame through a bolt, the external database is in bidirectional electrical signal connection with the electronic information extractor, so that the question bank can be input into the external database through the USB data connector, the question judgment result is transmitted out through the USB data connector, and the electronic information extractor can be used as a data relay of the external database and the data processor.
As preferred, electronic information extractor and the two-way electricity of data processor be connected, data processor and water-cooling tank pass through the bolt and twist and connect, water-cooling tank and heat dissipation grid pass through the bolt and twist and connect, water-cooling tank and work pilot lamp electricity be connected, set up like this and to provide water-cooling, air-cooled heat dissipation function for data processor through the water-cooling tank, improve data processor's work efficiency, prolong its working life, the pilot lamp of working simultaneously can be used for showing whether the water-cooling tank is in normal operating condition.
Preferably, the wiring terminal is unidirectionally and electrically connected with the transformer, the transformer is unidirectionally and electrically connected with the water cooling tank, and the transformer is electrically connected with the data processor in a single phase, so that external power can be connected through the wiring terminal to supply power to the water cooling tank and the data processor, the water cooling tank provides heat dissipation for the data processor, and the data processor performs question judgment operation.
Preferably, the data processor is electrically connected with the flashing indicator in a single phase, the data processor is electrically connected with the side display screen in a single direction, the data processor is electrically connected with the main display screen in a single direction, and the flashing indicator is electrically connected with the main display screen in a double direction, so that the problem judging state and the problem judging process of the data processor can be displayed through the side display screen and the main display screen, whether the data processor is in a normal operation state or not can be conveniently checked by a worker, and meanwhile, the flashing indicator can be used for displaying the working parameters of the main display screen in real time.
Preferably, the data processor is in one-way electric connection with the fixed keyboard, the fixed keyboard is in one-way electric connection with the operation buttons, and the fixed keyboard is fixedly screwed with the assembly positioning frame through bolts, so that the arrangement is convenient for workers to input work instructions through the operation buttons, and the input work instructions are processed through the fixed keyboard and then input into the data processor to limit and correct the judgment questions.
Preferably, the object stage is a transparent acrylic plate, the scanning head is in one-way electric connection with the image information processor, the image information processor is in one-way electric connection with the data processor, so that a light supplementing lamp can be used for providing a light supplementing effect for answer paper on the object stage, the scanning head scans a blackened area, and a scanning result is processed by the image information processor and then fed back to the data processor for question judgment.
Preferably, the partition code is arranged between the eight-station coding strip and the answer area, so that personalized marking can be carried out on questions through the eight-station coding strip, different contents of different examinee examinations can be achieved, and the partition code can provide a partition function for the eight-station coding strip and the answer area, and the question judging task is facilitated.
The invention has the beneficial effects that: the invention can reduce the effect of high-tech cheating, ensure that the high-tech cheating can not transmit answers at all, ensure that the cheating of the examinees is invalid, effectively control the cheating phenomenon of the examinees, ensure that the examination is fair and reasonable, and the scores of the examinees reflect the true level of the examinees, thereby providing accurate talents selection basis for human units.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a partial view of a topic determination computer of the present invention;
FIG. 2 is a partial view of an answer sheet according to the present invention;
fig. 3 is a partially enlarged plan view of the water cooling tank of the present invention.
1-external database; 2-USB data connector; 3-a fixing frame; 4-an electronic information extractor; 5-a binding post; 6-a transformer; 7-a water cooling tank; 8-a data processor; 9-a flashing indicator; 10-side display screen; 11-main display screen; 12-assembling a positioning frame; 13-a fixed keyboard; 14-operating buttons; 15-a light supplement lamp; 16-an object stage; 17-sweeping the wharf; 18-an image information processor; 19-eight station coding strip; 20-partition code; 21-answering area; 22-a heat dissipation grid; 23-working indicator light.
The specific implementation mode is as follows:
as shown in fig. 1, 2 and 3, the following technical solutions are adopted in the present embodiment: it comprises an external database 1, a USB data connector 2, a fixing frame 3, an electronic information extractor 4, a binding post 5, a transformer 6, a water cooling box 7, a data processor 8, a flicker indicator 9, a side display screen 10, a main display screen 11, an assembly positioning frame 12, a fixed keyboard 13, an operation button 14, a light supplementing lamp 15, an objective table 16, a sweeping dock 17, an image information processor 18, an eight-station coding strip 19, a partition code 20, a question answering area 21, a heat dissipation grid 22 and a work indicating lamp 23, wherein the USB data connector 2 is arranged above the external database 1, the external database 1 is connected with the data processor 8 through the electronic information extractor 4, the fixing frame 3 is arranged between the external database 1 and the electronic information extractor 4, the water cooling box 7 is arranged above the data processor 8, the transformer 6 is arranged on the side edge of the water cooling box 7, the binding post 5 is arranged on the transformer 6, 7 tops of water-cooling tank are provided with heat dissipation grid 22, heat dissipation grid 22 side is provided with work pilot lamp 23, be provided with main display screen 11 in the middle of the data processor 8, main display screen 11 top is provided with scintillation indicator 9, main display screen 11 side is provided with side display screen 10, 8 below of data processor is provided with fixed keyboard 13, be provided with operating button 14 on the fixed keyboard 13, the both sides limit of fixed keyboard 13 is provided with assembly locating rack 12, light filling lamp 15 sets up in objective table 16 top, 16 below of objective table are provided with sweeps pier 17, it is connected with image information processor 18 to sweep pier 17, image information processor 18 is connected with data processor 8, subregion sign indicating number 20 sets up between eight station code strip 19 and answer district 21.
The model of the data processor 8 is a core processor and is UNL2003N, the external database 1 is in bidirectional electric signal connection with the USB data connector 2, the external database 1 is screwed with the fixed frame 3 through a bolt, the external database 1 is in bidirectional electric signal connection with the electronic information extractor 4, so that the problem library can be input into the external database 1 through the USB data connector 2, the judgment result is transmitted out through the USB data connector 2, and meanwhile, the electronic information extractor 4 can be used as a data transfer device for the external database 1 and the data processor 8; the electronic information extractor 4 is electrically connected with the data processor 8 in a bidirectional mode, the data processor 8 is screwed with the water cooling box 7 through bolts, the water cooling box 7 is screwed with the radiating grid 22 through bolts, and the water cooling box 7 is electrically connected with the work indicator lamp 23, so that the water cooling box 7 can provide water cooling and air cooling radiating functions for the data processor 8, the working efficiency of the data processor 8 is improved, the service life of the data processor is prolonged, and meanwhile the work indicator lamp 23 can be used for displaying whether the water cooling box 7 is in a normal operation state or not; the wiring terminal 5 is in one-way electric connection with the transformer 6, the transformer 6 is in one-way electric connection with the water cooling tank 7, and the transformer 6 is in one-phase electric connection with the data processor 8, so that external electric power can be accessed through the wiring terminal 5 to supply power to the water cooling tank 7 and the data processor 8, the water cooling tank 7 provides heat dissipation for the data processor 8, and the data processor 8 performs question judgment operation; the data processor 8 is electrically connected with the flashing indicator 9 in a single phase, the data processor 8 is electrically connected with the side display screen 10 in a single direction, the data processor 8 is electrically connected with the main display screen 11 in a single direction, and the flashing indicator 9 is electrically connected with the main display screen 11 in a double direction, so that the problem judging state and the problem judging process of the data processor 8 can be displayed through the side display screen 10 and the main display screen 11, whether the invention is in a normal operation state or not can be conveniently checked by a worker, and meanwhile, the flashing indicator 9 can be used for displaying the working parameters of the main display screen 11 in real time; the data processor 8 is unidirectionally and electrically connected with the fixed keyboard 13, the fixed keyboard 13 is unidirectionally and electrically connected with the operating button 14, the fixed keyboard 13 is fixedly screwed with the assembling and positioning frame 12 through bolts, so that the arrangement is convenient for a worker to input a working instruction through the operating button 14, the input working instruction is input into the data processor 8 after being processed through the fixed keyboard 13, and the judgment is limited and corrected; the objective table 16 is a transparent acrylic plate, the scanning head 17 is in one-way electric connection with the image information processor 18, the image information processor 18 is in one-way electric connection with the data processor 8, so that the light supplementing lamp 15 can be used for providing a light supplementing effect for answer paper on the objective table 16, the scanning head 17 scans a blackened area, and a scanning result is processed by the image information processor 18 and then fed back to the data processor 8 for judging the questions; the partition code 20 is arranged between the eight-station coding strip 19 and the answer area 21, so that personalized marking can be carried out on questions through the eight-station coding strip 19, different contents of different examinee examinations can be made, and the partition code 20 can provide a partition function for the eight-station coding strip 19 and the answer area 21, and a question judging task is facilitated.
The working principle of the specific embodiment is as follows: coding the eight-station coding strip 19, compiling different bar codes according to different examination paper contents, and enabling examinees to be blackened, the examinees can answer questions in the answer area 21, when the questions are judged, the answer sheet is placed on the objective table 16, under the light supplement of the light supplement lamp 15, the answer area 21 is judged through the scanning head 17, the scanning result is fed back to the data processor 8 by the image information processor 18 to be processed, the data processor 8 can extract corresponding answer information from the external database 1 according to the codes displayed on the eight-station coding strip 19 and judge the answer sheet, after the judgment, the results are displayed on the side display screen 10 and the main display screen 11 and are simultaneously stored in the external database 1, and a user can conveniently convey the information in the external database 1 through the USB data connector 2.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. An anti-cheating computer question system, comprising: the device comprises an external database (1), a USB data connector (2), a fixing frame (3), an electronic information extractor (4), a binding post (5), a transformer (6), a water cooling box (7), a data processor (8), a flicker indicator (9), a side display screen (10), a main display screen (11), an assembly positioning frame (12), a fixed keyboard (13), an operating button (14), a light filling lamp (15), a carrying platform (16), a sweeping terminal (17), an image information processor (18), eight-station coding strips (19), a partition code (20), a question answering area (21), a heat dissipation grid (22) and a work indicating lamp (23), wherein the USB data connector (2) is arranged above the external database (1), the external database (1) is connected with the data processor (8) through the electronic information extractor (4), the fixing frame (3) is arranged between the external database (1) and the electronic information extractor (4), a water cooling tank (7) is arranged above the data processor (8), a transformer (6) is arranged on the side edge of the water cooling tank (7), a binding post (5) is arranged on the transformer (6), a heat dissipation grid (22) is arranged on the top of the water cooling tank (7), a work indicator lamp (23) is arranged on the side edge of the heat dissipation grid (22), a main display screen (11) is arranged in the middle of the data processor (8), a flicker indicator (9) is arranged above the main display screen (11), a side display screen (10) is arranged on the side edge of the main display screen (11), a fixed keyboard (13) is arranged below the data processor (8), an operating button (14) is arranged on the fixed keyboard (13), assembly positioning frames (12) are arranged on the two side edges of the fixed keyboard (13), a light filling lamp (15) is arranged above the objective table (16), and a sweeping head (17) is arranged below the objective table (16), sweep pier (17) and be connected with image information processor (18), image information processor (18) are connected with data processor (8), objective table (16) are used for placing the answer paper, are equipped with eight station code strip (19), subregion code (20) and answer district (21) on this answer paper, and subregion code (20) set up between eight station code strip (19) and answer district (21).
2. An anti-cheating computer question system according to claim 1, wherein: the data processor (8) is a core processor, the data processor is UNL2003N, the external database (1) is in bidirectional electric signal connection with the USB data connector (2), the external database (1) is screwed with the fixed frame (3) through bolts, and the external database (1) is in bidirectional electric signal connection with the electronic information extractor (4).
3. An anti-cheating computer question system according to claim 1, wherein: the electronic information extractor (4) is electrically connected with the data processor (8) in a bidirectional mode, the data processor (8) is screwed with the water cooling box (7) through bolts, the water cooling box (7) is screwed with the radiating grids (22) through bolts, and the water cooling box (7) is electrically connected with the work indicator lamp (23).
4. An anti-cheating computer question system according to claim 1, wherein: the wiring terminal (5) is in one-way electric connection with the transformer (6), the transformer (6) is in one-way electric connection with the water cooling tank (7), and the transformer (6) is in one-phase electric connection with the data processor (8).
5. An anti-cheating computer question system according to claim 1, wherein: the data processor (8) is electrically connected with the flashing indicator (9) in a single phase, the data processor (8) is electrically connected with the side display screen (10) in a single direction, the data processor (8) is electrically connected with the main display screen (11) in a single direction, and the flashing indicator (9) is electrically connected with the main display screen (11) in a double direction.
6. An anti-cheating computer question system according to claim 1, wherein: the data processor (8) is in one-way electric connection with the fixed keyboard (13), the fixed keyboard (13) is in one-way electric connection with the operating button (14), and the fixed keyboard (13) is fixedly screwed with the assembling positioning frame (12) through bolts.
7. An anti-cheating computer question system according to claim 1, wherein: the object stage (16) is a transparent acrylic plate, the scanning head (17) is in one-way electric connection with the image information processor (18), and the image information processor (18) is in one-way electric connection with the data processor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477287.5A CN108717316B (en) | 2018-05-18 | 2018-05-18 | Anti-cheating computer question-making system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477287.5A CN108717316B (en) | 2018-05-18 | 2018-05-18 | Anti-cheating computer question-making system |
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| CN108717316A CN108717316A (en) | 2018-10-30 |
| CN108717316B true CN108717316B (en) | 2021-07-20 |
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| CN201810477287.5A Active CN108717316B (en) | 2018-05-18 | 2018-05-18 | Anti-cheating computer question-making system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3722111A (en) * | 1970-06-18 | 1973-03-27 | M Georges | Examination paper test score system |
| CN101576963A (en) * | 2008-05-09 | 2009-11-11 | 旭丽电子(广州)有限公司 | Transaction machine with scoring function and method for scoring by using same |
| CN201698446U (en) * | 2010-07-12 | 2011-01-05 | 李庆红 | Portable type answer sheet marking device |
| CN102289578A (en) * | 2011-08-02 | 2011-12-21 | 吉林省高校科研与学位管理学会 | Encrypted-identification-code-based anti-cheating test system and implementation method thereof |
| CN102682307A (en) * | 2012-05-03 | 2012-09-19 | 苏州多捷电子科技有限公司 | Modifiable answer sheet system and implementation method thereof based on image processing |
| CN102855495A (en) * | 2012-08-22 | 2013-01-02 | 苏州多捷电子科技有限公司 | Method for implementing electronic edition standard answer, and application system thereof |
| CN103870911A (en) * | 2013-10-28 | 2014-06-18 | 龙宏元 | Test paper and paper inspection system capable of preventing examinees from cheating |
| CN205177198U (en) * | 2015-11-28 | 2016-04-20 | 华中师范大学 | System of going over examination papers on line infraduction line |
| CN209044651U (en) * | 2018-11-06 | 2019-06-28 | 西安敏学信息科技有限公司 | A kind of two dimensional code paper teaching aid equipment |
-
2018
- 2018-05-18 CN CN201810477287.5A patent/CN108717316B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3722111A (en) * | 1970-06-18 | 1973-03-27 | M Georges | Examination paper test score system |
| CN101576963A (en) * | 2008-05-09 | 2009-11-11 | 旭丽电子(广州)有限公司 | Transaction machine with scoring function and method for scoring by using same |
| CN201698446U (en) * | 2010-07-12 | 2011-01-05 | 李庆红 | Portable type answer sheet marking device |
| CN102289578A (en) * | 2011-08-02 | 2011-12-21 | 吉林省高校科研与学位管理学会 | Encrypted-identification-code-based anti-cheating test system and implementation method thereof |
| CN102682307A (en) * | 2012-05-03 | 2012-09-19 | 苏州多捷电子科技有限公司 | Modifiable answer sheet system and implementation method thereof based on image processing |
| CN102855495A (en) * | 2012-08-22 | 2013-01-02 | 苏州多捷电子科技有限公司 | Method for implementing electronic edition standard answer, and application system thereof |
| CN103870911A (en) * | 2013-10-28 | 2014-06-18 | 龙宏元 | Test paper and paper inspection system capable of preventing examinees from cheating |
| CN205177198U (en) * | 2015-11-28 | 2016-04-20 | 华中师范大学 | System of going over examination papers on line infraduction line |
| CN209044651U (en) * | 2018-11-06 | 2019-06-28 | 西安敏学信息科技有限公司 | A kind of two dimensional code paper teaching aid equipment |
Non-Patent Citations (1)
| Title |
|---|
| 涂卡类考试防止作弊技术的研究;于全通 等;《轻工科技》;20150909;74,86 * |
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