CN201421615Y - Integrated start-up device based on capacitance induction fingerprint identification - Google Patents

Integrated start-up device based on capacitance induction fingerprint identification Download PDF

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Publication number
CN201421615Y
CN201421615Y CN2009201192732U CN200920119273U CN201421615Y CN 201421615 Y CN201421615 Y CN 201421615Y CN 2009201192732 U CN2009201192732 U CN 2009201192732U CN 200920119273 U CN200920119273 U CN 200920119273U CN 201421615 Y CN201421615 Y CN 201421615Y
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China
Prior art keywords
integrated
prism
electrode material
capacitance
wiring board
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009201192732U
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Chinese (zh)
Inventor
艾永明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dessmann China Machinery and Electronic Co Ltd
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Individual
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Priority to CN2009201192732U priority Critical patent/CN201421615Y/en
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Publication of CN201421615Y publication Critical patent/CN201421615Y/en
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Abstract

An integrated start-up device based on the capacitance induction fingerprint identification belongs to the technical field of fingerprint identification devices, and comprises a plastic housing, a prism, a light source, a lens, an electrode material and a PCB (printed circuit board). The integrated start-up device is characterized in that the light source, the prism and the lens are fixed in the plastic housing; the capacitance change detection circuit is connected with the PCB; an electrode material used for the capacitance induction is integrated on the PCB and in contact with the prism; theintegrated electrode material is connected with the capacitance change detection circuit; and the capacitance change detection circuit is connected with a start-up trigger circuit. The integrated start-up device has the advantages that the waterproof performance is good; the limitation of commercial power installation position is avoided; the start-up is convenient; the power consumption is remarkably less than that of the infrared induction; the service life of the product can be prolonged; and the integrated degree is high.

Description

A kind of integrated form electric capacity induction fingerprint recognition starter gear
Technical field
The utility model belongs to the fingerprint identification device technical field, is specifically related to respond to automatically the device that fingerprint starts fingerprint recognition, discerns after the induction automatically when during use finger being put into fingerprint identification device, and does not need to start by other mechanical hook-up.
Background technology
In the prior art, the startup of fingerprint recognition system is following several: 1, by mechanical hook-ups such as buttons; The action of button must be arranged earlier when starting fingerprint identification device, not convenient, and increase mechanical hook-up such as button, potential faults increases.2 by the long term power source supply, allow fingerprint identification device be in starting state for a long time such as being connected to general distribution system, there is not the place of fixing power supply just can't realize to some such as door lock, and all be in starting state always, increase the loss of fingerprint identification device and the loss of the energy undoubtedly; Whether 3 be placed on certain position by the infrared induction finger starts fingerprint identification device, owing to use the less power supply supplies of capacity such as battery, power consumption is bigger, and total system is shorter service time, and is simultaneously invalid there being use under the environment of high light can receive the interference of high light; 4 by being fixed on the sheet metal above the fingerprint head, when being placed on the fingerprint head, finger connects circuit to start fingerprint identification device by finger contacting metal contact, sheet metal is exposed to the outside, being subjected to rain erosion for a long time can be invalid, also may cause recognition device to be in startup for a long time and cause power consumption excessive.
Summary of the invention
In order to overcome deficiency of the prior art, the purpose of this utility model is to provide a kind of integrated form electric capacity induction fingerprint recognition starter gear by auto-induction apparatus induction fingerprint, convenient and safe, low-power consumption, working stability.
For achieving the above object, the utility model adopts following technical scheme:
A kind of integrated form electric capacity induction fingerprint recognition starter gear, plastic casing, prism, light source, lens and PCB wiring board, it is characterized in that light source, prism and lens are fixed in the plastic casing, the capacitance variations testing circuit is integrated in the PCB wiring board, be integrated with the electrode material that is used for capacitive sensing on the described PCB wiring board, and contact with prism, described capacitance variations testing circuit can be gathered the variation of this contact capacitance value, and described capacitance variations testing circuit is connected with start triggering circuit.
Further again, described sensing electrode material is a sheet metal.Can be selected from this areas such as chromium zirconium copper sheet, beryllium copper sheet, aluminium oxide copper sheet electrode material commonly used.
Prism and PCB wiring board contact position are that multiple spot or line or face contact.Can gather multi-point signal like this, the meaning of every road signal is judged.
Fingerprint recognition starter gear compared to existing technology, its beneficial effect is:
Can start automatically when (1) user directly is placed on finger on the fingerprint identification device, very convenient.
(2) water resistance height is not limited to the fixed power source environment and uses.
(3) power consumption is starkly lower than infrared induction, can prolong whole recognition device service time, and the utility model device can avoid infrared induction to use the defective that lost efficacy under the high light environment.
(4) the utility model is gathered the electric appearance value of contact point (line, face) by integrated circuit, and electrode material and capacitance variations testing circuit all are integrated in the PCB wiring board, integrated height, the potential faults of avoiding the prior art lead to connect.
Figure of description
Fig. 1 is the utility model one example structure synoptic diagram.
Embodiment
Come the utility model is further specified below in conjunction with specific embodiment, but the utility model is not limited to these embodiments.One skilled in the art would recognize that the utility model contained in claims scope all alternativess, improvement project and the equivalents that may comprise.
Embodiment 1
Integrated form electric capacity induction fingerprint recognition starter gear is the fingerprint head as shown in Figure 1, comprises power supply 6, prism 3, lens 5, plastic casing 1 and PCB wiring board 4.Prism 3 is provided with the electrode material that is integrated in the PCB wiring board with PCB wiring board 4 contact positions 2, and electrode material is connected with the capacitance variations testing circuit, and described capacitance variations testing circuit connects start triggering circuit.
The capacitance variations testing circuit all is printed in PCB wiring board 4 with the electrode material that is used for capacitive sensing.
Light source 6, prism 3 and lens 5 are fixed in plastic casing inner light source 6 and are positioned at prism and advance light face one side, and the optical axis of lens is vertical with the prism exiting surface.
Contact point can be established sensing electrode material 2, and the capacitance variations testing circuit direct and on the PCB wiring board of electrode material links to each other.This sensing electrode can be sheet metal, also can with other electrode material be printed in pcb board or place prism and pcb board between.
The utility model is the induction of integrated form electric capacity, the user is placed on finger and carries out fingerprint on the prism when reading, finger forms a low-voltage AC field with contacting of prism, cause PCB wiring board and prism contact point (line, face) capacitance of upper electrode material changes, capacitance variations testing circuit on the wiring board can detect the information that electrode material electric capacity changes, and the PCB wiring board sends instruction and starts fingerprint head harvester, thereby the automatic induction that has realized the fingerprint head starts.All the other contents are prior art, can be in detail referring to the design of optical fingerprint acquisition instrument technology.

Claims (4)

1, a kind of integrated form electric capacity induction fingerprint recognition starter gear, comprise plastic casing, prism, light source, lens and PCB wiring board, it is characterized in that light source, prism and lens are fixed in the plastic casing, the capacitance variations testing circuit is integrated in the PCB wiring board, be integrated with the electrode material that is used for capacitive sensing on the described PCB wiring board, and contact with prism, described capacitance variations testing circuit can be gathered the variation of this contact capacitance value, and described capacitance variations testing circuit is connected with start triggering circuit.
2, integrated form electric capacity induction fingerprint recognition starter gear as claimed in claim 1 is characterized in that described contact point is provided with sensing electrode, and electrode is electrically connected with the capacitance variations testing circuit.
3, integrated form electric capacity induction fingerprint recognition starter gear as claimed in claim 2 is characterized in that described sensing electrode material is a sheet metal.
4,, it is characterized in that prism and surface-mounted integrated circuit contact position are that multiple spot or line or face contact as the described integrated form electric capacity of one of claim 1-3 induction fingerprint recognition starter gear.
CN2009201192732U 2009-05-06 2009-05-06 Integrated start-up device based on capacitance induction fingerprint identification Expired - Lifetime CN201421615Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201192732U CN201421615Y (en) 2009-05-06 2009-05-06 Integrated start-up device based on capacitance induction fingerprint identification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201192732U CN201421615Y (en) 2009-05-06 2009-05-06 Integrated start-up device based on capacitance induction fingerprint identification

Publications (1)

Publication Number Publication Date
CN201421615Y true CN201421615Y (en) 2010-03-10

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CN2009201192732U Expired - Lifetime CN201421615Y (en) 2009-05-06 2009-05-06 Integrated start-up device based on capacitance induction fingerprint identification

Country Status (1)

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CN (1) CN201421615Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750520A (en) * 2012-06-05 2012-10-24 东莞市中控电子技术有限公司 Capacitive fingerprint detection device
WO2013170666A1 (en) * 2012-05-17 2013-11-21 Min Yu Structure of a fingerprint collecting device
WO2014059762A1 (en) * 2012-10-15 2014-04-24 Min Yu Fingerprint triangular prism structure having attached metal sheet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013170666A1 (en) * 2012-05-17 2013-11-21 Min Yu Structure of a fingerprint collecting device
CN102750520A (en) * 2012-06-05 2012-10-24 东莞市中控电子技术有限公司 Capacitive fingerprint detection device
WO2014059762A1 (en) * 2012-10-15 2014-04-24 Min Yu Fingerprint triangular prism structure having attached metal sheet

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: DESSMANN electric (China) Co., Ltd.

Assignor: Ai Yongming

Contract record no.: 2010330002287

Denomination of utility model: Integrated start-up device based on capacitance induction fingerprint identification

Granted publication date: 20100310

License type: Exclusive License

Record date: 20101228

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Integrated start-up device based on capacitance induction fingerprint identification

Effective date of registration: 20110907

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2011990000344

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20120413

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2011990000344

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Integrated start-up device based on capacitance induction fingerprint identification

Effective date of registration: 20120413

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2012990000148

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20130619

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2012990000148

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Integrated start-up device based on capacitance induction fingerprint identification

Effective date of registration: 20130702

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2013990000422

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20170122

Address after: Hangzhou City, Zhejiang province 310000 Binjiang District Jiang Hui Road No. 7 Building 1 layer 1-3

Patentee after: DESSMANN electric (China) Co., Ltd.

Address before: Hangzhou City, Zhejiang province 310007 Stadium Road Hongdu business building room A-202

Patentee before: Ai Yongming

CX01 Expiry of patent term

Granted publication date: 20100310

CX01 Expiry of patent term
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200108

Granted publication date: 20100310

Pledgee: CITIC Bank, Limited by Share Ltd, Hangzhou branch

Pledgor: Ai Yongming

Registration number: 2013990000422

PC01 Cancellation of the registration of the contract for pledge of patent right