CN202083657U - Revision and addition writing discriminating instrument for black writing - Google Patents
Revision and addition writing discriminating instrument for black writing Download PDFInfo
- Publication number
- CN202083657U CN202083657U CN2011201475940U CN201120147594U CN202083657U CN 202083657 U CN202083657 U CN 202083657U CN 2011201475940 U CN2011201475940 U CN 2011201475940U CN 201120147594 U CN201120147594 U CN 201120147594U CN 202083657 U CN202083657 U CN 202083657U
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- Prior art keywords
- writing
- revision
- identifier
- measuring
- test pencil
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Abstract
The utility model relates to a revision and addition writing discriminating instrument for black writing, which comprises a host and a measuring touch probe. Probes are arranged at the upper end of the measuring touch probe. The revision and addition writing discriminating instrument is characterized in that the two measuring probes are positioned on the same measuring touch probe. Compared with a common resistance measuring instrument, the revision and addition writing discriminating instrument can be operated by a single hand of a user, measuring length can be easily fixed, shorter writing strokes can be measured, the diameter of each probe head is smaller, and measurement sensibility is higher. The revision and addition writing discriminating instrument is particularly suitable for truth or falsity discrimination of black writing in files and vouchers.
Description
Technical field
The utility model relates to a kind of interpolation writing identifier, and in particular, the utility model relates to a kind of interpolation writing identifier of blackness handwriting stroke, is specially adapted to the discriminating of blackness handwriting in the file.
Background technology
Continuous development along with socialist market economy, people's awareness of the legal system constantly strengthens, the situation of use contract, bill is more and more in economic activity, and people for whether the word content in contract, the bill, numeral, writing time etc. add, distort, forge the case that requires to identify also get more and more.Inspection of document evaluation department is for identifying these cases, and the composition of all kinds of person's handwriting colorants of often will analyzing and researching is the black handwriting colorant particularly, for the documentary evidence true and false, exposure are broken laws and commit crime and given a clue and evidence.
More existing methods of differentiating at black handwriting in the prior art, wherein utilizing writing stroke resistance relative method also is one of a kind of efficient ways wherein, it is to compare according to measured fixed length blackness handwriting stroke resistance and other fixed length stroke resistance, differentiates this stroke and whether passes through interpolation.
According to the resistivity formula: (wherein ρ is a resistivity to R=ρ L/S, L is a length, S is a cross-sectional area) as can be known, measure the signature stroke on the paper, when the stroke length L of choosing certain, the cross-sectional area S one of stroke regularly, the prescription of the signature pen ink of different brands different model has nothing in common with each other, thus electricalresistivity's difference, when measuring different handwritten signature, the resistance value that stroke showed will present difference, and the reviewer just can judge the interpolation fact according to this differential file.
Owing to be subjected to paper, write the influence of factors such as pressure, fixed length stroke resistance value has certain fluctuation range, therefore will take multiple measurements when utilizing the utility model to judge the interpolation fact, finds out the various fluctuation ranges of finding out by statistical method.
Yet traditional resistance measuring instrument in the prior art, what adopt all is two test pencils, all need to remeasure spacing when measuring the writing stroke at every turn, because said method is to judge according to the statistics of repeatedly measuring, as seen adopt the resistance measuring instrument measurement of prior art will cause measuring operation too loaded down with trivial details, for the short writing of stroke, adopt traditional resistance measuring instrument may cause and to measure; The test pencil of traditional resistor measuring instrument probe is thicker in addition, and the sensitivity of measurement is also relatively poor.
Summary of the invention
In order to solve the above-mentioned technical matters that prior art exists, the purpose of this utility model is to provide a kind of interpolation writing identifier of blackness handwriting.
To achieve these goals, the utility model provides following technical scheme:
A kind of interpolation writing identifier of blackness handwriting comprises the resistance measurement main frame and measures test pencil, measures the test pencil upper end and has probe, it is characterized in that two measuring probes all are positioned on the measurement test pencil.
Preferably, described measurement test pencil comprises spacing lever; Can regulate the spacing of probe by the distance of spacing adjuster bar.
Preferably, the spacing of described two measuring probes can be regulated between 0.5mm-75mm; The spacing of preferred two measuring probes can be regulated between 0.5mm-25mm; Preferred, the spacing of two probes can be regulated between 5-15mm.
Preferably, the length of described measurement test pencil is 10-25cm; The length of preferred described measurement test pencil is 10-20cm; Preferred, the length of described measurement test pencil is 15cm.
Preferably, the diameter of described probe is 0.02-0.2mm; Preferably, the diameter of described probe is 0.02-0.1mm; Preferred, the diameter of described probe is 0.05mm.
Preferably, described measurement test pencil is connected with the resistance measurement main frame by lead.
Preferably, described resistance measurement main frame has display screen, keypress function district and measurement range selection district.
Interpolation writing identifier of the present utility model is compared with common resistance measuring instrument, has the following advantages:
1. can realize one-handed performance.
2. be easy to fixation measuring length, can measure shorter writing stroke.
3. the probe diameter is littler, and measurement sensitivity is higher.
Description of drawings
Fig. 1 is the synoptic diagram of the measurement test pencil of interpolation writing identifier of the present utility model.
Fig. 2 is the synoptic diagram of the interpolation writing identifier main frame of blackness handwriting of the present utility model.
Wherein, the implication of each Reference numeral representative is as follows among the figure: 1-measures test pencil, the 11-probe, and the 12-spacing lever, 2-resistance measurement main frame, the 21-display screen, the 22-power key, 23-backlight switch, 24-keeps key, 25-range driving switch, 26-connection jaws.
Embodiment
Following the utility model will make further explanation the utility model with specific embodiment in conjunction with the accompanying drawings.The inventor is that following examples only are in order to further specify the technical solution of the utility model, it can not to be interpreted as the restriction to the invention protection domain what this need declare.
As shown in Figures 1 and 2, the long 18cm of resistance measurement main body of the present utility model, wide 9cm, thickness are 3.5cm; The main body operating surface comprises power switch, backlight switch, data maintenance key, range gear gauge tap, connection jaws.The long 15cm of test pencil, the about 0.05cm of nib diameter inserts red-black two connection jaws of main body respectively by red-black two wiring and enters duty.
Operation instructions
Red, black meter pen are inserted " V ", " Ω " jack respectively, the function knob is threaded to corresponding range, nib red, black meter pen has contacted tested person's handwriting, and display screen promptly shows the resistance of measured object, if do not know the size of the resistance of measured object, earlier with big range test, be screwed into corresponding suitable range again, measure value more accurately, if instrument only shows " 1 " when test, illustrate and transship, knob is screwed into bigger range.
For the evaluation of giving interpolation writing identifier provides theoretical foundation and standard of perfection, we have done a large amount of experiments.By collecting common representational 30 signature pens on the market, numeral sample is write in making, adopt the interpolation writing identifier of the application's blackness handwriting, we detect and make interpolation writing sample and carry out simplation examination, measure the electrical resistivity range of the writing that various dissimilar signature pen writes, whether the resistivity of judging suspicious writing stroke by relative method is unusual, thereby judge whether there is the interpolation fact.
Claims (9)
1. the interpolation writing identifier of a blackness handwriting comprises the resistance main frame and measures test pencil, measures the test pencil upper end and has probe, it is characterized in that two measuring probes all are positioned on the measurement test pencil.
2. the described interpolation writing of claim 1 identifier is characterized in that described measurement test pencil comprises spacing lever.
3. the described interpolation writing of claim 2 identifier is characterized in that the spacing of described two measuring probes is regulated between 0.5-75mm.
4. the described interpolation writing of claim 3 identifier is characterized in that the spacing of described two measuring probes is regulated between 5-15mm.
5. the described interpolation writing of claim 1 identifier, the length that it is characterized in that described measurement test pencil is 10-25cm.
6. the described interpolation writing of claim 5 identifier, the length that it is characterized in that described measurement test pencil is 15cm.
7. the described interpolation writing of claim 1 identifier, the diameter that it is characterized in that described probe is 0.02-0.2mm.
8. the described interpolation writing of claim 7 identifier, the diameter that it is characterized in that described probe is 0.05mm.
9. the described interpolation writing of claim 1 identifier is characterized in that described measurement test pencil is connected with main frame by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201475940U CN202083657U (en) | 2011-05-11 | 2011-05-11 | Revision and addition writing discriminating instrument for black writing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201475940U CN202083657U (en) | 2011-05-11 | 2011-05-11 | Revision and addition writing discriminating instrument for black writing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083657U true CN202083657U (en) | 2011-12-21 |
Family
ID=45344283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201475940U Expired - Fee Related CN202083657U (en) | 2011-05-11 | 2011-05-11 | Revision and addition writing discriminating instrument for black writing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083657U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818823A (en) * | 2012-07-26 | 2012-12-12 | 方邡 | Method for detecting writing time of carbon-containing ink handwriting by measuring electrical conductivity of stroke |
| CN102854223A (en) * | 2012-07-30 | 2013-01-02 | 中国人民公安大学 | Black handwriting authentication instrument |
| CN109816847A (en) * | 2018-12-20 | 2019-05-28 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus and terminal device judging that hand-written writing is altered |
-
2011
- 2011-05-11 CN CN2011201475940U patent/CN202083657U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818823A (en) * | 2012-07-26 | 2012-12-12 | 方邡 | Method for detecting writing time of carbon-containing ink handwriting by measuring electrical conductivity of stroke |
| CN102854223A (en) * | 2012-07-30 | 2013-01-02 | 中国人民公安大学 | Black handwriting authentication instrument |
| CN109816847A (en) * | 2018-12-20 | 2019-05-28 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus and terminal device judging that hand-written writing is altered |
| CN109816847B (en) * | 2018-12-20 | 2021-01-01 | 深圳怡化电脑股份有限公司 | Method and device for judging handwritten handwriting correction and terminal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20130511 |