CN216748777U - Passive capacitive fingerprint IC card - Google Patents
Passive capacitive fingerprint IC card Download PDFInfo
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- CN216748777U CN216748777U CN202123271739.0U CN202123271739U CN216748777U CN 216748777 U CN216748777 U CN 216748777U CN 202123271739 U CN202123271739 U CN 202123271739U CN 216748777 U CN216748777 U CN 216748777U
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Abstract
The utility model discloses a passive capacitive fingerprint IC card, which comprises a first clamping plate, a second clamping plate, a circuit board, a fingerprint algorithm chip, an NFC communication and energy collection chip, an NFC induction coil and a capacitive fingerprint sensor; the fingerprint algorithm chip is arranged on the upper surface of the circuit board and is used for collecting and identifying fingerprints; the NFC communication and energy collection chip and the capacitive fingerprint sensor are mounted on the upper surface of the circuit board, the NFC induction coil is mounted on the circuit board and surrounds the periphery of the circuit board, and the NFC communication and energy collection chip is electrically connected with the fingerprint algorithm chip, the NFC induction coil and the capacitive fingerprint sensor at the same time; the circuit board is installed between first cardboard and the second cardboard, first cardboard and second cardboard fixed connection, and the capacitive fingerprint sensor of first cardboard on the circuit board corresponds the position department and opens the through-hole that matches with capacitive fingerprint sensor shape. Fingerprint identification is also carried out on the basis of inductive power supply, so that the efficiency is improved, and meanwhile, the safety is higher.
Description
Technical Field
The utility model relates to a IC-card technical field, specifically speaking, the utility model relates to a passive capacitanc fingerprint IC-card.
Background
At present, even if the card itself is encrypted, the conventional IC card is not easy to be copied, but if the card is lost or stolen, the card may be stolen, which is not favorable for card security.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a safer passive capacitive fingerprint IC card.
The utility model provides a technical scheme that its technical problem adopted is: a passive capacitive fingerprint IC card comprises a first clamping plate, a second clamping plate, a circuit board, a fingerprint algorithm chip, an NFC communication and energy collection chip, an NFC induction coil and a capacitive fingerprint sensor;
the fingerprint algorithm chip is arranged on the upper surface of the circuit board and is used for collecting and identifying fingerprints; the NFC communication and energy collection chip and the capacitive fingerprint sensor are mounted on the upper surface of the circuit board, the NFC induction coil is mounted on the circuit board and surrounds the periphery of the circuit board, and the NFC communication and energy collection chip is electrically connected with the fingerprint algorithm chip, the NFC induction coil and the capacitive fingerprint sensor at the same time; the circuit board is installed between first cardboard and the second cardboard, first cardboard and second cardboard fixed connection, and the capacitive fingerprint sensor of first cardboard on the circuit board corresponds the position department and opens the through-hole that matches with capacitive fingerprint sensor shape.
In the technical scheme, the circuit board is an FPC circuit board.
First cardboard is unanimous and the area is greater than the circuit board with second cardboard shape among the above-mentioned technical scheme.
In the above technical solution, the NFC induction coil is rectangular in surrounding shape.
The type of the fingerprint algorithm chip in the technical scheme is ML9443, the type of the NFC communication and energy collection chip is ST25DV04K, one end of the NFC induction coil is connected to an AC0 pin of the NFC communication and energy collection chip ST25DV04K, the other end of the NFC induction coil is connected to an AC1 pin of the NFC communication and energy collection chip ST25DV04K, and an SDA pin of the NFC communication and energy collection chip ST25DV04K is connected with a PB14 pin of the fingerprint algorithm chip ML 9443.
The utility model has the advantages that: the utility model provides a pair of in capacitanc fingerprint IC-card will capacitanc fingerprint identification system add the IC-card, need the possessor to put registered finger in the fingerprint identification region when the IC-card uses, be close to the equipment of punching the card with the IC-card and just can successfully punch the card, will be refused when non-possessor holds the card to punch the card. Capacitanc fingerprint identification system is through the wireless transmission energy of collecting the IC-card when with the equipment communication of punching the card, with energy conversion power supply, need not outside or internal battery power supply, both made things convenient for the cardholder to use, need not to reform transform original equipment of punching the card simultaneously, has the advantage of the high security and the reliability of this safe identification technology of fingerprint identification again concurrently.
Drawings
Fig. 1 is a schematic structural diagram of a passive capacitive fingerprint IC card according to the present invention.
Fig. 2 is a diagram of an embodiment of a passive capacitive fingerprint IC card circuit according to the present invention.
Fig. 3 is a schematic diagram illustrating the working process of the passive capacitive fingerprint IC card of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations related in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other.
Referring to fig. 1, as shown in the figure, the present invention provides a passive capacitive fingerprint IC card, which includes a first card board 106, a second card board 107, a circuit board 104, a fingerprint algorithm chip 101, an NFC communication and energy collection chip 102, an NFC induction coil 103, and a capacitive fingerprint sensor 105; the circuit board 104 is an FPC circuit board, has good toughness and can be bent properly, and the fingerprint algorithm chip 101 is mounted on the upper surface of the circuit board 104 and used for collecting and identifying fingerprints; the NFC communication and energy collection chip 102 and the capacitive fingerprint sensor 105 are mounted on the upper surface of the circuit board 104, the NFC induction coil 103 is mounted on the circuit board 104 and surrounds the circuit board 104, the surrounding shape of the NFC induction coil 103 is rectangular, the NFC communication and energy collection chip 102 is electrically connected with the fingerprint algorithm chip 101, the NFC induction coil 103 and the capacitive fingerprint sensor 105 at the same time, the NFC communication and energy collection chip 102 converts wireless energy generated when the IC card reading equipment communicates with the IC card by using an energy collection technology, and the NFC communication and energy collection chip is used for supplying voltage to the fingerprint algorithm chip 101 and the capacitive fingerprint sensor 105 for power supply; the circuit board 104 is installed between first cardboard 106 and second cardboard 107, first cardboard 106 and second cardboard 107 fixed connection, first cardboard 106 is unanimous with the second cardboard 107 shape and the area is greater than circuit board 104, wrap up circuit board 104 between first cardboard 106 and second cardboard 107, first cardboard 106 can be firm with circuit board 104 parcel in the centre with second cardboard 107, first cardboard 106 is opened with the through-hole that matches with capacitanc fingerprint sensor 105 shape in the position department that corresponds of capacitanc fingerprint sensor 105 on circuit board 104, capacitanc fingerprint sensor 105's induction zone exposes on first cardboard 106 surface by the through-hole, pass through induction zone discernment during discernment fingerprint. The chip and the capacitive fingerprint sensor are adopted, so that the whole device is small in size and thin in thickness.
As shown in fig. 2, the utility model provides a circuit part embodiment, fingerprint algorithm chip 101 model is ML9443, NFC communication and energy collection chip 102 model are ST25DV04K, NFC induction coil 103's one end is connected in NFC communication and energy collection chip ST25DV04K 102's AC0 pin, NFC induction coil 103's the other end is connected in NFC communication and energy collection chip ST25DV04K 102's AC1 pin, NFC communication and energy collection chip ST25DV04K 102's SDA pin and fingerprint algorithm chip ML 9443101's PB14 pin are connected. When the NFC induction coil 103 is close to the bank card reading device, the inductive energy is collected and converted into electric energy by the NFC communication and energy collection chip 102, so as to supply power to the whole device.
Fig. 3 is the utility model relates to a passive capacitanc fingerprint IC card's work flow schematic diagram, at first type the fingerprint through capacitanc fingerprint sensor 105 to not typeeing carrying out of fingerprint, verify that 3 fingerprint unanimously just can successfully type, NFC induction coil 103 is close to bank card reading equipment when using, inductive energy is collected by NFC communication and energy collection chip 102 and is converted into the electric energy and supply power for the device, the user pastes capacitanc fingerprint sensor 105 ware with the fingerprint, verify through can with bank card reading equipment communication.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (6)
1. A passive capacitive fingerprint IC card characterized in that: the fingerprint detection device comprises a first clamping plate, a second clamping plate, a circuit board, a fingerprint algorithm chip, an NFC communication and energy collection chip, an NFC induction coil and a capacitive fingerprint sensor;
the fingerprint algorithm chip is arranged on the upper surface of the circuit board and is used for collecting and identifying fingerprints; the NFC communication and energy collection chip and the capacitive fingerprint sensor are mounted on the upper surface of the circuit board, the NFC induction coil is mounted on the circuit board and surrounds the periphery of the circuit board, and the NFC communication and energy collection chip is electrically connected with the fingerprint algorithm chip, the NFC induction coil and the capacitive fingerprint sensor at the same time; the circuit board is installed between first cardboard and the second cardboard, first cardboard and second cardboard fixed connection, and the capacitive fingerprint sensor of first cardboard on the circuit board corresponds the position department and opens the through-hole that matches with capacitive fingerprint sensor shape.
2. A passive capacitive fingerprint IC card according to claim 1, characterized in that: the circuit board is an FPC circuit board.
3. A passive capacitive fingerprint IC card according to claim 1, characterized by: the first clamping plate and the second clamping plate are consistent in shape and larger than the circuit board in area.
4. A passive capacitive fingerprint I C card according to claim 1, wherein: the shape that NFC induction coil encircles is the rectangle.
5. A passive capacitive fingerprint IC card according to claim 1, characterized in that: the fingerprint algorithm chip model is ML 9443.
6. A passive capacitive fingerprint I C card according to claim 5, wherein: the model of the NFC communication and energy collection chip is ST25DV04K, one end of the NFC induction coil is connected to the AC0 pin of the NFC communication and energy collection chip ST25DV04K, the other end of the NFC induction coil is connected to the AC1 pin of the NFC communication and energy collection chip ST25DV04K, and the SDA pin of the NFC communication and energy collection chip ST25DV04K is connected to the PB14 pin of the fingerprint algorithm chip ML 9443.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123271739.0U CN216748777U (en) | 2021-12-23 | 2021-12-23 | Passive capacitive fingerprint IC card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123271739.0U CN216748777U (en) | 2021-12-23 | 2021-12-23 | Passive capacitive fingerprint IC card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216748777U true CN216748777U (en) | 2022-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123271739.0U Active CN216748777U (en) | 2021-12-23 | 2021-12-23 | Passive capacitive fingerprint IC card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216748777U (en) |
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2021
- 2021-12-23 CN CN202123271739.0U patent/CN216748777U/en active Active
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