CN205388776U - Test fingerprint sensor image quality's device - Google Patents
Test fingerprint sensor image quality's device Download PDFInfo
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- CN205388776U CN205388776U CN201620087851.9U CN201620087851U CN205388776U CN 205388776 U CN205388776 U CN 205388776U CN 201620087851 U CN201620087851 U CN 201620087851U CN 205388776 U CN205388776 U CN 205388776U
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- fingerprint sensor
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- conductive rubber
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Abstract
The utility model provides a test fingerprint sensor image quality's device, fingerprint sensor is including apron and control chip, testing arrangement includes depression bar, pressure head, conductive rubber and image analyzer, conductive rubber's second surface is provided with the bellying, the bellying with there is the difference in height between the second surface. The bellying set to through the depression bar with reciprocating with rotary motion of pressure head is right fingerprint sensor's apron carries out a lot of pressfitting, and it is right to realize the cover of all induction points of fingerprint sensor to the resolution chart that obtains can have the boundary line that the black and white links up in like, so as to more comprehensively, test sensor's image quality more accurately.
Description
Technical field
This utility model relates to image quality test device, particularly relates to the device of a kind of test fingerprint sensor image quality.
Background technology
Fingerprint sensor is widely used in identification field.Prior art exists the various test devices of test fingerprint sensor image quality.The test philosophy of these test devices is roughly the same, cover plate typically via the conductive rubber pressing fingerprint sensor arranged in testing pressure head, thus obtaining corresponding gray scale image on image dissector, and analyze the image to judge the picture quality that fingerprint sensor is obtained.
Existing conductive rubber includes plane conductive rubber and " returning " font conductive rubber, its planar-type conductive rubber can be completely covered all induction points of fingerprint sensor, " return " font conductive rubber to be then equivalent to arrange rectangular recess at the face center contacted with cover plate of plane conductive rubber, thus all induction points of fingerprint sensor can not be completely covered, but owing to the existence of rectangular recess can make obtained image central authorities the white block of rectangle occur, a plurality of demarcation line can be there is between this white block and other gray scale image regions, this demarcation line then can be used to as the standard judging the obtained quality of fingerprint sensor, namely this demarcation line more becomes apparent from, then illustrate that obtained picture quality is more high.
To sum up, existing test device can not be completely covered all induction points of fingerprint sensor and obtain chequered with black and white demarcation line simultaneously.
Utility model content
This utility model provides a kind of image quality test device, it is capable of being completely covered of the induction point to fingerprint sensor, and make that obtained test image can have chequered with black and white demarcation line such that it is able to test the picture quality of sensor more comprehensively, more accurately.
nullThis utility model provides the device of a kind of test fingerprint sensor image quality，Described fingerprint sensor includes cover plate and control chip，Described test device includes depression bar、Pressure head、Conductive rubber and image dissector，One end of described depression bar it is arranged in flat described pressure head，Described pressure head includes the upper and lower surface being oppositely arranged，Described conductive rubber is tabular，Including the first surface being oppositely arranged and second surface，Described first surface is fitted on the lower surface of described pressure head，Described image dissector electrically connects with the described control chip of described fingerprint sensor，It is characterized in that，Described second surface is provided with lobe，Difference in height is there is between described lobe and described second surface，Described lobe is set to described depression bar and the cover plate of described fingerprint sensor is carried out repeatedly pressing with rotary motion by moving up and down of described pressure head，It is capable of the covering of all induction points to described fingerprint sensor.
Wherein, the quantity of described lobe is at least two, and is centrosymmetric distribution relative to the central point of described conductive rubber.
Wherein, the second surface of described conductive rubber is square, described square second surface includes the first limit of being oppositely arranged and the second limit and the 3rd limit being oppositely arranged and the 4th limit, described conductive rubber is by the first central shaft respectively through described first limit and described second limit and is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by second central shaft on described 3rd limit and described 4th limit, and wherein said lobe is arranged in described firstth district and described 3rd district.
Wherein, the second surface of described conductive rubber is square, described square second surface includes the first limit of being oppositely arranged and the second limit and the 3rd limit being oppositely arranged and the 4th limit, described conductive rubber is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by two articles of diagonal, and described lobe is arranged in described firstth district and described 3rd district.
Wherein, the second surface of described conductive rubber is circular, described circular second surface is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by two articles of orthogonal centre lines, and described lobe is arranged in described firstth district and described 3rd district.
Wherein, described device also includes main part, be vertically arranged the first support and horizontally disposed second support, described first support is vertically arranged on described main part, and described second support level is arranged on described first support, and described depression bar is vertically arranged on described second support.
Compared to prior art, this utility model by arranging specific lobe on conductive rubber, on the one hand, the all standing of the pixel of test zone fingerprint sensor can be realized, on the other hand, can so that obtained test image has the demarcation line of black and white linking, such that it is able to test the picture quality of sensor more comprehensively, more accurately.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the floor map during device work according to test fingerprint sensor image quality of the present utility model；
Fig. 2 is the floor map of the conductive rubber in the device according to test fingerprint sensor image quality of the present utility model；
Fig. 3 is the schematic perspective view of the conductive rubber in the device according to test fingerprint sensor image quality of the present utility model；
The first pressing image that Fig. 4 a and Fig. 4 b obtains when being respectively and carried out pressing by the conductive rubber of Fig. 2 and Fig. 3 and the schematic diagram of the second pressing image；
Fig. 5 is the floor map of the another kind of conductive rubber that the device according to test fingerprint sensor image quality of the present utility model adopts；
Fig. 6 is the floor map of another conductive rubber that the device according to test fingerprint sensor image quality of the present utility model adopts；
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Fig. 1 is the floor map during device work according to test fingerprint sensor image quality of the present utility model, test device includes main part 1, support 2, depression bar 3, pressure head 4, conductive rubber 5 and image dissector 6, wherein, main part 1 is used for providing for test device supporting, support 2 includes the first support 201 of being vertically arranged and horizontally disposed second support 202, first support 201 is vertically arranged on main part 1, and the second support 202 is horizontally set on the first support 201, second support 202 provides for the depression bar 3 being vertically arranged and supports, the lower section of depression bar 3 it is arranged in flat pressure head 4, and conductive rubber 5 is also in tabular, including the first surface 51 being oppositely arranged and second surface 52, first surface 51 is combined on the lower surface of pressure head 4 by adhesive plaster.Depression bar 3 and pressure head 4 can be driven by driving device (not shown) and move up and down and 90 degree of rotary motions.It is appreciated that support 2 can also be other structures, and conductive rubber 5 can also be fitted on pressure head 4 by other means.
With reference to Fig. 2, the cross section of conductive rubber 5 is square, the second surface 52 of this conductive rubber 5 includes the first limit 501 of being oppositely arranged and the second limit 502 and the 3rd limit 503 and the 4th limit 504 being oppositely arranged, first central shaft 505, first limit 501 and the second limit 502 by square conductive rubber 5, second central shaft 506 the 3rd limit 503 and the 4th limit 504 by square conductive rubber 5, the second surface 52 of conductive rubber 5 is divided into four regions by central shaft 505 and 506, i.e. the first district A, second district B, 3rd district C and the four district D, first C diagonal angle, district A and the three district is arranged, second D diagonal angle, district B and the four district is arranged.
With reference to Fig. 3, the first district A and the three district C that diagonal angle is arranged is provided with lobe 507, correspondingly, the second district B and the four district D that diagonal angle is arranged is not provided with lobe.This lobe 507 upwardly extends from the first district A and the three district C to the side away from the first district A and the three district C, therefore the cross sectional shape of lobe 507 and the shape of the first district A or the 3rd district C are identical, and the surface away from the first district A or the 3rd district C of lobe 507 is plane, and the distance between this surface with the first district A or the 3rd district C is equal, thus may insure that the lobe 507 on the first district A or the 3rd district C can the cover plate 701 of simultaneously pressing fingerprint sensor 7.It is appreciated that lobe 507 can also be arranged on the second district B and the four district D, and is not disposed on the first district A and the three district C.Preferably, lobe 507 is one-body molded with conductive rubber 5.
Referring again to Fig. 1, fingerprint sensor 7 includes transparent cover plate 701 and control chip 702, and transparent cover plate 701 is placed in the top of control chip 702, and image dissector 6 such as computer electrically connects with the control chip 702 of fingerprint sensor 7.During test, fingerprint sensor 7 can be placed on depression bar 3 and the underface of pressure head 4, depression bar 3 can move down with pressure head 4 and carry out first time pressing so that conductive rubber 5 contacts with the transparent cover plate 701 of fingerprint sensor 7, conductive rubber 5 role here is that apish hands refers to, thus the first pressing image as shown in fig. 4 a can be obtained on image dissector 6, then depression bar 3 and pressure head 4 meeting upwards lifting 90-degree rotation, then the transparent cover plate 701 so that conductive rubber 5 second time pressing fingerprint sensor 7 can again be moved down thus obtaining the second pressing image shown in Fig. 4 b on image dissector 6.
In fig .4, shadow region A' and C' represents the gray scale image formed on image dissector 6 when lobe 507 contacts with the cover plate 701 of fingerprint sensor 7, B' and D' then represents the white block that the part that the cover plate 701 of fingerprint sensor 7 is not pressed obtains at image dissector 6, and straight line 505' and 506' is then the demarcation line between gray scale image and white block.Wherein gray scale image can reflect the darkest black to the brightest white between brightness hierarchical relationship, obtained gray scale image is more clear, crosses and gets over nature, and demarcation line is more clear, more obvious, then show that the obtained picture quality of fingerprint sensor 7 is more good.Fig. 4 b is the second pressing image obtained when the cover plate 701 of fingerprint sensor 7 presses after depression bar 3 and pressure head 4 90-degree rotation, shadow region A " with C " represent when lobe 507 contacts the gray scale image formed on image dissector 6 with the cover plate 701 of fingerprint sensor 7; B " and D " then represent the white block that the part that the cover plate 701 of fingerprint sensor 7 is not pressed obtains, straight line 505 at image dissector 6 " and 506 " it is then the demarcation line between gray scale image and white block.During detection, the area of the second surface 52 of conductive rubber 5 can be a bit larger tham or equal to the area of induction region of fingerprint sensor 7, with reference to Fig. 4 a and Fig. 4 b, easy to understand, carry out the obtained first time pressing image of secondary pressing after depression bar 3 and pressure head 4 90-degree rotation and all induction points of fingerprint sensor 7 can be completely covered with pressing image for the second time, and also four demarcation line of black and white linking can be obtained.
Preferably, image dissector 6 has analysis software, the greyscale level of the first pressing image and the second pressing image and marginal readability can be analyzed by the algorithm analyzed in software, such that it is able to judge the quality of the obtained picture quality of fingerprint sensor 7.Further, it is also possible to the first pressing image and the second pressing image are analyzed by the mode of manual analysis.
Fig. 5 is the floor map of the another kind of conductive rubber that the device according to test fingerprint sensor image quality of the present utility model adopts, the second surface of this conductive rubber is also square, this square second surface includes the first limit of being oppositely arranged and the second limit and the 3rd limit being oppositely arranged and the 4th limit, and conductive rubber is divided into, by two diagonal, the first district A that diagonal angle is arranged1With the 3rd district C1And the second district B that diagonal angle is arranged1With the 4th district D1, it is arranged on the first district A by the lobe of shadow representation1With the 3rd district C1On.It is appreciated that, conductive rubber shown in Fig. 5 carries out second pressing by pressure head and depression bar 90-degree rotation, the effect identical with conductive rubber as shown in Figure 2 can be reached, namely all induction points of fingerprint sensor 7 can be completely covered, and can obtain becoming a plurality of demarcation line of the image quality standard of reflection fingerprint sensor 7.
Fig. 6 is the floor map of another conductive rubber that the device according to test fingerprint sensor image quality of the present utility model adopts, the second surface of this conductive rubber is circular, and this circular second surface is divided into, by two orthogonal centre lines, the first district A that diagonal angle is arranged2With the 3rd district C2And the second district B that diagonal angle is arranged2With the 4th district D2, the lobe of shadow representation is arranged on the first district A2With the 3rd district C2On.As mentioned above, conductive rubber shown in Fig. 6 carries out second pressing by pressure head and depression bar 90-degree rotation, the effect identical with conductive rubber as shown in Figure 2 can be reached, namely all induction points of fingerprint sensor 7 can be completely covered, and can obtain becoming a plurality of demarcation line of the image quality standard of reflection fingerprint sensor 7.
Certainly, for realizing the same effect that can reach with conductive rubber as shown in Figure 2, Figure 5 and Figure 6, the lobe on the second surface of conductive rubber can be other arrangements, and quantity can also more than two.
Above disclosed it is only this utility model preferred embodiment, certainly the interest field of this utility model can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that this utility model claim is made, still fall within the scope that utility model contains.
Claims (6)
- null1. the device of a test fingerprint sensor image quality，Described fingerprint sensor includes cover plate and control chip，Described test device includes depression bar、Pressure head、Conductive rubber and image dissector，One end of described depression bar it is arranged in flat described pressure head，Described pressure head includes the upper and lower surface being oppositely arranged，Described conductive rubber is tabular，Including the first surface being oppositely arranged and second surface，Described first surface is fitted on the lower surface of described pressure head，Described image dissector electrically connects with the described control chip of described fingerprint sensor，It is characterized in that，Described second surface is provided with lobe，Difference in height is there is between described lobe and described second surface，Described lobe is set to described depression bar and the cover plate of described fingerprint sensor is carried out repeatedly pressing with rotary motion by moving up and down of described pressure head，It is capable of the covering of all induction points to described fingerprint sensor.
- 2. the device of test fingerprint sensor image quality as claimed in claim 1, it is characterised in that the quantity of described lobe is at least two, and be centrosymmetric distribution relative to the central point of described conductive rubber.
- 3. the device of test fingerprint sensor image quality as claimed in claim 2, it is characterized in that, the second surface of described conductive rubber is square, described square second surface includes the first limit of being oppositely arranged and the second limit and the 3rd limit being oppositely arranged and the 4th limit, described conductive rubber is by the first central shaft respectively through described first limit and described second limit and is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by second central shaft on described 3rd limit and described 4th limit, wherein said lobe is arranged in described firstth district and described 3rd district.
- 4. the device of test fingerprint sensor image quality as claimed in claim 2, it is characterized in that, the second surface of described conductive rubber is square, described square second surface includes the first limit of being oppositely arranged and the second limit and the 3rd limit being oppositely arranged and the 4th limit, described conductive rubber is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by two articles of diagonal, and described lobe is arranged in described firstth district and described 3rd district.
- 5. the device of test fingerprint sensor image quality as claimed in claim 2, it is characterized in that, the second surface of described conductive rubber is circular, described second surface is divided into the firstth district of diagonal angle setting and the secondth district of the 3rd district and diagonal angle setting and the 4th district by two articles of orthogonal centre lines, and described lobe is arranged in described firstth district and described 3rd district.
- 6. the device of the test fingerprint sensor image quality as described in any one of claim 3-5, it is characterized in that, the first support also include main part, being vertically arranged and horizontally disposed second support, described first support is vertically arranged on described main part, described second support level is arranged on described first support, and described depression bar is vertically arranged on described second support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087851.9U CN205388776U (en) | 2016-01-28 | 2016-01-28 | Test fingerprint sensor image quality's device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087851.9U CN205388776U (en) | 2016-01-28 | 2016-01-28 | Test fingerprint sensor image quality's device |
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| Publication Number | Publication Date |
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| CN205388776U true CN205388776U (en) | 2016-07-20 |
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| CN201620087851.9U Expired - Fee Related CN205388776U (en) | 2016-01-28 | 2016-01-28 | Test fingerprint sensor image quality's device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106407057A (en) * | 2016-09-23 | 2017-02-15 | 南昌欧菲生物识别技术有限公司 | A detection method and a detection device |
| WO2018070915A1 (en) * | 2016-10-14 | 2018-04-19 | Fingerprint Cards Ab | Test module for a fingerprint sensing device |
| WO2018094850A1 (en) * | 2016-11-26 | 2018-05-31 | 华为技术有限公司 | Test head for testing fingerprint sensor |
-
2016
- 2016-01-28 CN CN201620087851.9U patent/CN205388776U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106407057A (en) * | 2016-09-23 | 2017-02-15 | 南昌欧菲生物识别技术有限公司 | A detection method and a detection device |
| CN106407057B (en) * | 2016-09-23 | 2021-09-17 | 江西欧迈斯微电子有限公司 | Detection method and detection device |
| WO2018070915A1 (en) * | 2016-10-14 | 2018-04-19 | Fingerprint Cards Ab | Test module for a fingerprint sensing device |
| US9971930B2 (en) | 2016-10-14 | 2018-05-15 | Fingerprint Cards Ab | Test module for a fingerprint sensing device |
| TWI743219B (en) * | 2016-10-14 | 2021-10-21 | 瑞典商指紋卡公司 | Test module for a fingerprint sensing device |
| WO2018094850A1 (en) * | 2016-11-26 | 2018-05-31 | 华为技术有限公司 | Test head for testing fingerprint sensor |
| CN108604295A (en) * | 2016-11-26 | 2018-09-28 | 华为技术有限公司 | Measuring head for test fingerprint sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160720 Termination date: 20180128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |