CN217305896U - Entrance guard card - Google Patents

Abstract

The utility model provides an entrance guard's card, including security chip and fingerprint acquisition circuit. The security chip includes a processing circuit including a first power output for powering up the fingerprint acquisition circuit. The fingerprint acquisition circuit comprises a fingerprint data receiving and transmitting end and a first power supply input end which is connected with the first power supply output end and acquires a power supply of the first power supply output end. The processing circuit also comprises a fingerprint identification state memory and a processing data transceiving end connected with the fingerprint data transceiving end, a fingerprint collecting instruction is sent to the fingerprint collecting circuit through the processing data transceiving end, the fingerprint collecting circuit collects the fingerprint data of a card holder of the access control card according to the fingerprint collecting instruction through the fingerprint data transceiving end, and the fingerprint data transceiving end outputs the fingerprint data to the processing data transceiving end; the processing circuit carries out fingerprint authentication comparison on the fingerprint data and preset fingerprint template data in the security chip to obtain and store a fingerprint identification state in the fingerprint identification state memory. Thus, the risk of communication failure is reduced.

Description

Entrance guard card

Technical Field

The utility model relates to a security protection technical field especially relates to an entrance guard's card.

Background

The access control system is a system having a prohibition right for an entrance of a passage. The access control system comprises access control equipment and an access control card matched with the access control equipment. The access control equipment authenticates the access control card in the card holder, and the access control card can be released after the access control card is successfully released, otherwise, the access control card is refused to be released.

The general access control equipment comprises a timing counter, wherein the timing counter is used for setting a timing time, and the access control equipment is required to be communicated with an access control card in the timing time.

In the related art, after a fingerprint is introduced into an access control system, fingerprint authentication is used for authentication, and the access control system can be released after the authentication is successful, otherwise, the access control system refuses the release. Due to the complexity of the fingerprint, the on-site cardholder presses the fingerprint with a certain delay, which may cause the time length exceeding the timing length and higher risk of communication failure.

SUMMERY OF THE UTILITY MODEL

The utility model provides an entrance guard's card reduces communication failure's risk.

The utility model provides an entrance guard's card, entrance guard's card includes:

the security chip comprises a processing circuit, the processing circuit comprises a first power output end, and the processing circuit powers on the fingerprint acquisition circuit through the first power output end;

the fingerprint acquisition circuit comprises a first power supply input end and a fingerprint data transceiving end, wherein the first power supply input end is connected with the first power supply output end, and the fingerprint acquisition circuit acquires the power supply of the first power supply output end through the first power supply input end;

the processing circuit further comprises a fingerprint identification state memory and a processing data transceiving end, the processing data transceiving end is connected with the fingerprint data transceiving end, the processing circuit sends a fingerprint acquisition command to the fingerprint acquisition circuit through the processing data transceiving end, the fingerprint acquisition circuit acquires the fingerprint data of a card holder of the access card according to the fingerprint acquisition command through the fingerprint data transceiving end, and the fingerprint data transceiving end outputs the fingerprint data; the processing circuit receives the fingerprint data through the processing data transceiving end, and the processing circuit performs fingerprint authentication comparison on the fingerprint data and preset fingerprint template data in the security chip to obtain a fingerprint identification state of the access control card and stores the fingerprint identification state into the fingerprint identification state memory.

Furthermore, the access control card also comprises a key, a power supply control circuit and an energy storage power supply;

the key is connected with the power supply control circuit; when the key is pressed down, the power supply control circuit is switched on;

the power supply control circuit is respectively connected with the energy storage power supply, the fingerprint acquisition circuit and the safety chip, and the energy storage power supply transmits energy to the safety chip;

the power supply control circuit comprises a locking electric control circuit which is connected with the fingerprint acquisition circuit;

the processing data receiving and transmitting end of the safety chip is connected with the locking electric control circuit, the safety chip receives the energy transmitted by the power supply control circuit, the processing circuit supplies power to the fingerprint acquisition circuit through the first power output end, and the processing circuit sends a locking power supply instruction to the locking electric control circuit through the processing data receiving and transmitting end and the fingerprint acquisition circuit.

Furthermore, the energy storage power supply comprises a third power supply output end, the third power supply output end is connected with the power supply control circuit, and the power supply control circuit is switched on when the key is pressed;

the power supply control circuit comprises a third power supply input end, a second power supply output end and a locking electric control circuit; the locking electric control circuit is connected with the fingerprint acquisition circuit; the third power supply input end is connected with the third power supply output end, the second power supply output end is connected with the safety chip, and the energy storage power supply transmits energy to the safety chip through the third power supply output end;

the security chip comprises a second power supply input end, the second power supply input end is connected with the second power supply output end, and the processing data transceiving end is connected with the fingerprint acquisition circuit; the second power input end of the security chip receives the energy transmitted by the second power output end, the processing circuit supplies power to the fingerprint acquisition circuit through the first power output end, and the processing circuit sends the locking instruction to the fingerprint acquisition circuit through the processing data transceiving end; the fingerprint acquisition circuit comprises a first fingerprint control end, the first fingerprint control end is connected with the locking electric control circuit, and the first fingerprint control end sends the locking power supply instruction to the locking electric control circuit.

The access control card further comprises a unique identification number memory and a non-connection antenna, wherein the unique identification number memory is connected with the fingerprint identification state memory, and the unique identification number memory stores invalid identification numbers in a default mode;

the processing circuit further comprises a first information processing end and the control transceiving end, the control transceiving end is connected with the non-wired antenna, the first information processing end is connected with the unique identification number memory, and when the authentication type of the access control card is the unique identification number authentication type, the processing circuit detects that the fingerprint identification state in the fingerprint identification state memory is the fingerprint authentication failure state or the fingerprint authentication failure state, the first information processing end maintains the fingerprint identification state memory to store the invalid identification number;

when the entrance guard card is communicated with the entrance guard equipment, the processing circuit reads out the serial number in the unique identification number memory, and the control transceiving end sends the invalid identification number to the entrance guard equipment through the non-access antenna.

Furthermore, the access control card further comprises a unique identification number memory, the unique identification number memory is connected with the fingerprint identification state memory, and the unique identification number memory stores invalid identification numbers in a default mode; the processing circuit further comprises a first information processing end, the first information processing end is connected with the unique identification number storage, the authentication type of the access control card is the unique identification number authentication type, the processing circuit detects the fingerprint identification state in the fingerprint identification state storage, and when the fingerprint identification state is the state of successful fingerprint authentication, the first information processing end writes the access control card serial number into the unique identification number storage.

The processing circuit comprises a control receiving and transmitting end, the control receiving and transmitting end is connected with the non-connected antenna, the authentication type of the access control card is a key authentication type, and when the access control card is communicated with the access control equipment, the processing circuit receives to-be-encrypted data sent by the access control equipment through the non-connected antenna by the control receiving and transmitting end; when the processing circuit detects that the fingerprint identification state in the fingerprint identification state storage is a fingerprint authentication success state, the processing circuit encrypts the data to be encrypted by using the secret key of the access control card to obtain ciphertext data, and the ciphertext data are transmitted to the access control equipment through the control transceiving end.

Further, processing circuit detects in the fingerprint identification state memory fingerprint identification state is fingerprint authentication failure state or the state of not carrying out fingerprint authentication, entrance guard's card still includes non-connecing the antenna, processing circuit is including control receiving and dispatching end, control receiving and dispatching end with non-connecing the antenna connection entrance guard's card and entrance guard's equipment communication, for the authentication type of entrance guard's card is the key authentication type, processing circuit receives through non-connecing the antenna by control receiving and dispatching end entrance guard's equipment transmission treats the encryption data, processing circuit generates the message of authentication failure, through control receiving and dispatching end to entrance guard's equipment transmission authentication failure's message.

Further, the access control card comprises a non-connected antenna and a charging circuit connected with the non-connected antenna; the charging circuit is respectively connected with the energy storage power supply and the fingerprint acquisition circuit, and the safety chip outputs a disconnection instruction of the charging circuit to the fingerprint acquisition circuit through the processing data transceiving end;

the fingerprint acquisition circuit comprises a first fingerprint control end and a second fingerprint control end, and the second fingerprint control end is connected with the charging circuit;

the power supply control circuit comprises a signal control end; the first fingerprint control end is connected with the signal control end, the first fingerprint control end sends a power supply disconnection instruction to the signal control end, and the second fingerprint control end sends the power supply disconnection instruction to the charging circuit.

Furthermore, the access control card comprises a state indicating unit, and the state indicating unit is connected with the fingerprint acquisition circuit;

the state indicating unit comprises an indicating input end;

the fingerprint acquisition circuit includes fingerprint state output, fingerprint state output with instruct the input, the fingerprint acquisition circuit passes through the signal of telecommunication of fingerprint state identification state is exported to fingerprint state output, the state indication unit passes through instruct the input the signal of telecommunication, light or close the instruction of state indication unit.

Furthermore, the state indicating unit comprises a first state indicating lamp and a second state indicating lamp, and the fingerprint acquisition circuit comprises a first fingerprint state output end and a second fingerprint state output end; the first fingerprint state output end is connected with the first state indicating lamp, and the second fingerprint state output end is connected with the second state indicating lamp.

In some embodiments, the utility model discloses an entrance guard's card, fingerprint identification state memory among processing circuit, fingerprint acquisition circuit and the processing circuit in the security chip are mutually cooperated, use the fingerprint authentication that entrance guard's card and owner's preset fingerprint template data can be accomplished to the entrance guard card, have reduced the time of card holder fingerprint authentication among entrance guard's card and the entrance guard equipment communication process, have reduced and have exceeded the communication failure's that length and lead to risk regularly.

Drawings

Fig. 1 is a schematic structural diagram of an access card provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the access card shown in fig. 1;

fig. 3 is a schematic structural diagram of an access card including a unique identification number memory according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and "the" and similar referents in the description and the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

For solving the higher this technical problem of risk of communication failure, the embodiment of the utility model provides an entrance guard's card, processing circuit in the safety chip, fingerprint identification state memory among fingerprint acquisition circuit and the processing circuit coordinates each other, the fingerprint authentication of entrance guard's card and owner's preset fingerprint template data can be accomplished to the use entrance guard's card, the time of card holder fingerprint authentication among entrance guard's card and the entrance guard equipment communication process has been reduced, the communication failure's that leads to when having reduced to exceed regularly risk, also the convenience is used the entrance guard card by owner.

The utility model discloses an entrance guard's card can be the entrance guard's card that has in the mobile terminal. Illustratively, the mobile terminal may include a smart phone, a smart watch, and the like. This is not exemplified. The utility model discloses an entrance guard's card can also be solitary entrance guard's card, so, conveniently carries, exclusive use entrance guard's card. Wherein the access card may comprise an active access card.

Fig. 1 shows the schematic structural diagram of the access card provided by the embodiment of the utility model.

As shown in fig. 1, the access control card 20 of the embodiment of the present invention includes a security chip 21 and a fingerprint collection circuit 23, and the security chip 21 is connected to the fingerprint collection circuit 23. The security chip 21 can encrypt hardware security, encrypt data, and realize secure communication. The fingerprint acquisition circuit 23 is mainly used for fingerprint acquisition and processing.

Continuing with fig. 1, the secure chip 21 comprises a processing circuit 22, the processing circuit 22 comprises a first power output 221, and the processing circuit 22 powers on the fingerprint acquisition circuit 23 through the first power output 221. The fingerprint acquisition instruction is used for acquiring fingerprint data of a card holder of the access control card.

The fingerprint collecting circuit 23 includes a first power input end 231 and a fingerprint data transceiving end 232, the first power input end 231 is connected to the first power output end 221, and the fingerprint collecting circuit 23 obtains the power of the first power output end 221 through the first power input end 231.

The cardholder refers to a person who needs to use the access control card to communicate with the access control device. The cardholder may be the owner of the access card to whom the pre-set fingerprint template data corresponds. The cardholder may also be a person other than the owner. In actual use, the owner of the access card loses the access card, and other people use the access card by impersonation, so that the fingerprint data of the card holder needs to be acquired, fingerprint authentication is carried out on the fingerprint data in the access card, whether the card holder is the owner of the access card is checked, and therefore the access card is ensured to belong to the owner, and then subsequent communication of access equipment is carried out.

The processing circuit 22 further includes a fingerprint identifier state memory 25 and a processing data transceiving end 222, the processing data transceiving end 222 is connected to the fingerprint data transceiving end 232, the processing circuit 22 sends a fingerprint collecting instruction to the fingerprint collecting circuit 23 through the processing data transceiving end 222, the fingerprint collecting circuit 23 collects the fingerprint data of the cardholder of the access control card 20 according to the fingerprint collecting instruction through the fingerprint data transceiving end 232, and the fingerprint data transceiving end 232 outputs the fingerprint data; the processing circuit 22 receives the fingerprint data through the processing data transceiving end 222, and the processing circuit 22 performs fingerprint authentication comparison on the fingerprint data and preset fingerprint template data in the security chip 21 to obtain a fingerprint identification state of the access card 20, and stores the fingerprint identification state into the fingerprint identification state memory 25.

The preset fingerprint template data refers to fingerprint data which is pre-recorded in the access card, and the fingerprint data is fingerprint data of an owner of the access card. In practical application, the preset fingerprint template data is collected as follows: when the processing circuit 22 in the secure chip 21 issues a fingerprint acquisition command through the first power output 221. And (4) lighting a red LED lamp to prompt the cardholder to press the fingerprint. After the first power input 231 of the fingerprint acquisition circuit 23 obtains the fingerprint data of the card holder, the red LED lamp is turned off to prompt the card holder to remove the finger. When the fingerprint data of the card holder is collected again, the red LED lamp is lightened to prompt the card holder to press the fingerprint. This is repeated until a predetermined number of required fingerprint data acquisitions is completed.

The fingerprint identification state is used for indicating whether the fingerprint data of the card holder and the preset fingerprint template data are subjected to fingerprint authentication. The fingerprint identification state can be realized by identification data or identification indicator lamps. The fingerprint identification state comprises a fingerprint authentication success state, a fingerprint authentication failure state or a state without fingerprint authentication. For example, the fingerprint authentication success status is set to 1, the fingerprint authentication failure status is set to 0, and the status without fingerprint authentication is set to null, that is, null. The data here are merely illustrative. For example, the fingerprint authentication success state is set as the lighting signal of the first status indicator lamp, the fingerprint authentication failure state is set as the lighting signal of the second status indicator lamp, and the state without fingerprint authentication is set as the non-lighting signal. This is merely an example. For example, the first status indicator light may be a green LED light and the second status indicator light may be a red LED light. Therefore, the successful state or the failed state of the fingerprint authentication can be conveniently distinguished, and the user can be reminded conveniently according to different colors of light.

In the embodiment of the application, the processing circuit 22, the fingerprint acquisition circuit 23 and the fingerprint identification state memory 25 in the processing circuit 22 in the security chip 21 cooperate with each other, so that the access control card 20 can complete fingerprint authentication of preset fingerprint template data of the access control card 20 and an owner, the time of the fingerprint authentication of a cardholder in the communication process of the access control card 20 and access control equipment is reduced, the risk of communication failure caused by exceeding the timing time is reduced, and the access control card can be conveniently used by the owner. Therefore, before the access control card 20 communicates with the access control device, the processing circuit 22, the fingerprint acquisition circuit 23 and the processing circuit 22 in the security chip 21 complete the comparison of the fingerprint template, and generate the fingerprint authentication status identifier.

Fig. 2 is a schematic structural diagram of the access card shown in fig. 1.

As shown in fig. 2, the access card 20 further includes a key, a power supply control circuit 24 and an energy storage power supply 29. The energy storage power supply 29 can store electric energy and provide electric energy for the access control card 20. Illustratively, the energy storage power source 29 may be a battery. The energy storage power supply 29 is respectively connected with the fingerprint acquisition module 12 and the security chip 20. In this way, the energy storage power supply 29 can respectively supply power to the fingerprint acquisition module 12 and the security chip 20 through the power supply control circuit 24. When the key is powered on, the energy storage power supply 29 supplies power to the security chip 20 through the power supply control circuit 24, so that the security chip 20 sends out a fingerprint acquisition instruction, and the fingerprint acquisition and comparison functions can be started.

The keys are not shown to be connected to the power supply control circuit 24; the key not shown is not intended to be pressed, and the power supply control circuit 24 is turned on.

The power supply control circuit 24 is respectively connected with the energy storage power supply 29, the fingerprint acquisition circuit 23 and the security chip 21, and the energy storage power supply 29 supplies energy to the security chip 21.

The power control circuit 24 includes a lock-out control circuit 244 that is coupled to the fingerprint acquisition circuit 23.

The processing data transceiver end 222 of the secure chip 21 is connected to the locking electric control circuit 244, the secure chip 21 receives the energy transmitted by the power supply control circuit 24, the processing circuit 22 supplies power to the fingerprint acquisition circuit 23 through the first power output end 221, and the processing circuit 22 sends a locking power supply instruction to the locking electric control circuit 244 through the processing data transceiver end 222 and the fingerprint acquisition circuit 23. In this way, the electric control circuit 24 can be ensured to be in the on state after the key-press is not released, and the normal communication between the security chip 21 and the fingerprint acquisition circuit 23, the locking electric control circuit 244 and the like is ensured.

Continuing with fig. 2, the energy storage power supply 29 includes a third power output 291, the third power output 291 is connected to the power supply control circuit 24, and the power supply control circuit 24 is turned on when the key is not pressed. Therefore, the fingerprint acquisition instruction triggered by the key not needing real-time acquisition saves energy.

The power control circuit 24 includes a third power input 241, a second power output 242, and a locking control circuit 244. The lock control circuit 244 is connected to the fingerprint acquisition circuit 23. The third power input end 241 is connected to the third power output end 291, the second power output end 242 is connected to the security chip 21, and the energy storage power supply 29 supplies energy to the security chip 21 through the third power output end 291.

The secure chip 21 includes a second power input terminal 223, the second power input terminal 223 is connected to the second power output terminal 242, and the processing data transceiver terminal 222 is connected to the fingerprint acquisition circuit 23. The second power input terminal 223 of the security chip 21 receives the energy transmitted by the second power output terminal 242, the processing circuit 22 supplies power to the fingerprint acquisition circuit 23 through the first power output terminal 221, and the processing circuit 22 transmits a locking instruction to the fingerprint acquisition circuit 23 through the processing data transceiving terminal 222. The fingerprint collecting circuit 23 includes a first fingerprint control terminal 233, the first fingerprint control terminal 233 is connected to the locking electric control circuit 244, and the first fingerprint control terminal 233 sends a locking power supply instruction to the locking electric control circuit 244. In this way, the electric control circuit 24 can be ensured to be in the on state after the key-press is not released, and the normal communication between the security chip 21 and the fingerprint acquisition circuit 23, the locking electric control circuit 244 and the like is ensured.

As shown in fig. 2, in some embodiments, the access card includes a charging circuit 28, the security chip 21 sends a locking command to the fingerprint collecting circuit 23 through the processing data transceiver 222, the fingerprint collecting circuit 23 includes a first fingerprint control terminal 233 and a second fingerprint control terminal 236, the first fingerprint control terminal 233 is connected to the locking control circuit 244, and the second fingerprint control terminal 236 is connected to the charging circuit 28. The first fingerprint control terminal 233 issues a lock power supply instruction to the lock electric control circuit 244, and the security chip 21, through processing the data transceiving terminal 222, also generates a switch-off instruction of the charging circuit 28, which is received by the fingerprint collection circuit 23, and issued to the electric control circuit 24 through the first fingerprint control terminal 233, and issued to the charging circuit 28 through the second fingerprint control terminal 236. Ensuring that the electrical control circuit 24 is still on after key release and that the stored energy power supply 29 is not charged. Furthermore, after the access card 20 completes the relevant operations, the security chip 21 sends an instruction to turn off the electric control circuit 24 through the processing data transceiver 222, and after the instruction is received by the fingerprint acquisition circuit 23, the instruction is sent to the electric control circuit 24 through the first fingerprint control terminal 233, so as to ensure that the power of the access card 20 is turned off.

The access control card has multiple authentication types, for example, one or more of a unique identification number authentication type and a key authentication type. Of course, other authentication types of the access card are also possible, and no one example is given here. The following description will be made in detail by taking two authentication types, i.e., a unique identification number authentication type and a key authentication type, as examples.

Fig. 3 is a schematic structural diagram of an access card including a unique identification number memory according to an embodiment of the present invention.

As shown in fig. 3, the authentication type of the access card 20 is a unique identification number authentication type. The access control card 20 further comprises a unique identification number memory 30 and a non-connection antenna 26, wherein the unique identification number memory 30 is connected with the fingerprint identification state memory 25, and the unique identification number memory 30 stores invalid identification numbers by default. The non-patch antenna 26 may comprise a non-patch antenna, among others. The invalid identification number refers to data which cannot pass the access control authentication. Illustratively, the invalid identification number is an invalid serial number, which may or may not have the same number of bits as the correct fingerprint card serial number. In this way, the default state in which fingerprint authentication is not performed can be effectively identified so as to be reflected quickly.

The processing circuit 22 further includes a first information processing terminal 224 and a control transceiving terminal 225, the control transceiving terminal 225 is connected to the non-wired antenna 26, the first information processing terminal 224 is connected to the unique identifier storage 30, and when the processing circuit 22 detects that the fingerprint identification state in the fingerprint identification state storage 25 is a state in which fingerprint authentication fails or a state in which fingerprint authentication is not performed, the first information processing terminal 224 maintains the fingerprint identification state storage 25 to store an invalid identifier.

The state where fingerprint authentication is not performed means that fingerprint template data is not recorded. The fingerprint template data is fingerprint data of the owner who enters the access card 20 for the first time. The security chip 21 extracts the fingerprint feature of the fingerprint template data as preset fingerprint template data. This facilitates comparison of the fingerprint characteristics of the cardholder of the access card 20 with the fingerprint characteristics of the fingerprint template data.

When the access card 20 communicates with the access device, the processing circuit 22 reads the serial number in the unique identification number memory 30, and the control transceiver 225 transmits an invalid identification number to the access device through the non-access antenna 26. Therefore, a fingerprint authentication mode of comparing the access control serial numbers can be adopted, and the user authentication is facilitated.

Continuing with FIG. 3; the processing circuit 22 further includes a first information processing terminal 224, the first information processing terminal 224 is connected to the unique identification number memory 30, and when the processing circuit 22 detects that the fingerprint identification state in the fingerprint identification state memory 25 is a state in which fingerprint authentication is successful, the access control card serial number is written into the unique identification number memory 30 through the first information processing terminal 224.

The entrance guard card serial number is used for uniquely identifying the serial number of the entrance guard card. The entrance guard card serial number can be the only entrance guard card serial number of preset, and this entrance guard card serial number can set up according to user's demand, also can be the firm setting.

When the processing circuit 22 receives the fingerprint data and successfully performs fingerprint authentication with the preset fingerprint template data, the fingerprint identification state of the access control card is the state that the fingerprint authentication is successful, the processing circuit 22 writes the valid serial number into the unique identification number memory 30 through the first information processing terminal 224, and when the access control card 20 communicates with the access control device, the processing circuit 22 reads the access control card serial number in the unique identification number memory 30, and the access control card serial number is sent to the access control device through the antenna 26 by the control transceiving terminal 225.

Referring to fig. 2, for the case that the authentication type of the access control card 20 is a key authentication type, the access control card further includes a non-connected antenna 26, the processing circuit 22 includes a control transceiving terminal 225, the control transceiving terminal 225 is connected to the non-connected antenna 26, and when the access control card 20 communicates with the access control device, the processing circuit 22 receives data to be encrypted, which is sent by the access control device, through the non-connected antenna 26 by the control transceiving terminal 225; when the processing circuit 22 detects that the fingerprint identification state in the fingerprint identification state memory 25 is a successful fingerprint authentication state, the processing circuit 22 encrypts data to be encrypted by using the secret key of the access control card 20 to obtain ciphertext data, and transmits the ciphertext data to the access control device by controlling the transceiving terminal 225, so that the access control device determines whether the secret key of the access control card is consistent with the secret key of the access control device according to the ciphertext data, and controls to open the door or refuse to open the door. Therefore, when the authentication type of the access control card is the key authentication type, the security of the access control card authentication is improved.

As shown in fig. 2, when the processing circuit 22 detects that the fingerprint identifier state in the fingerprint identifier state memory 25 is a fingerprint authentication failure state or a state without fingerprint authentication, and when the access card 20 communicates with the access device, the authentication type of the access card 20 is a key authentication type, the processing circuit 22 receives data to be encrypted, which is sent by the access device, through the non-access antenna 26 by the control transceiving terminal 225, and the processing circuit 22 generates a message that authentication fails and transmits the message that authentication fails to the access device through the control transceiving terminal 225. So that the access control equipment refuses to open the door according to the authentication failure message.

The utility model discloses entrance guard's authentication method divide into two communication stages, and the first stage is before entrance guard's card and entrance guard's equipment communication, carries out the communication stage of fingerprint authentication to cardholder's fingerprint data and preset fingerprint template data to and the second stage is entrance guard's card and entrance guard's equipment communication stage. The detailed description is as follows.

For the access control equipment, the access control equipment receives an access control card ciphertext transmitted by an access control card, and the access control card ciphertext is encrypted and transmitted by the access control card aiming at data to be encrypted; the access control equipment encrypts data to be encrypted to obtain an access control equipment ciphertext; if the cipher text of the access control card is consistent with the cipher text of the access control equipment, the fact that the key of the access control card is consistent with the key of the access control equipment is indicated, a signal that the access control authentication is successful is generated, the signal that the access control authentication is successful is used for controlling the access control authentication of the door to pass, and therefore the fact that the access control authentication is successful is indicated. If the cipher text of the access control card is inconsistent with the cipher text of the access control equipment, the key of the access control card is inconsistent with the key of the access control equipment, and a signal of access control authentication failure is generated and used for refusing to open the door, so that the access control authentication fails. Thus, the access authentication fails.

As shown in fig. 1 to fig. 3, the charging circuit 28 is initially in an on state, the key is in a state of cutting off the power supply of the energy storage power supply 29, the security chip 21 and the fingerprint acquisition circuit 23 are respectively in an off state, and when the non-connected antenna 26 is in a non-connected energy field, the charging circuit 28 receives the charging energy, the charging circuit 28 charges the energy storage power supply 29, and the energy storage power supply 29 receives the current signal.

The access control card 20 comprises a non-connected antenna and a charging circuit 28 connected with the non-connected antenna; the charging circuit 28 is respectively connected with the energy storage power supply 29 and the fingerprint acquisition circuit 23, and the security chip 21 outputs a disconnection instruction of the charging circuit 28 to the fingerprint acquisition circuit 23 through the processing data transceiving terminal 222;

the fingerprint acquisition circuit 23 comprises a first fingerprint control terminal 233 and a second fingerprint control terminal 236, and the second fingerprint control terminal 236 is connected with the charging circuit 28;

the power supply control circuit 24 includes a signal control terminal 243; the first fingerprint control terminal 233 is connected to the signal control terminal 243, the first fingerprint control terminal 233 sends a power supply disconnection instruction to the signal control terminal 243, and the second fingerprint control terminal 236 sends a power supply disconnection instruction to the charging circuit 28. Thus, when the security chip 20 is located in the contactless charger, the contactless antenna 26 receives the energy of the contactless charger and charges the energy storage power supply 29 under the control of the charging circuit 28. And in the charging process, the security chip 20 will sense the non-connection energy of the non-contact charger, but since there is no related command to control the security chip 20 to act, the security chip 20 will not perform further communication. At this time, because the key is not pressed, the power supply control circuit 24 disconnects the energy storage power supply 29 from charging the security chip 20, so that the energy storage power supply 29 is ensured not to discharge to other circuits in the charging process, and the security of the circuit can be improved.

As shown in fig. 2 to 3, the access card 20 includes a status indication unit 27, and the status indication unit 27 is connected to the fingerprint acquisition circuit 23;

the status indication unit 27 comprises an indication input 271;

the fingerprint acquisition circuit 23 comprises a fingerprint state output end 237, a fingerprint state output end and an indication input end 271, the fingerprint acquisition circuit 23 outputs an electric signal of a fingerprint identification state through the fingerprint state output end 237, and the state indication unit 27 lights or closes the indication of the state indication unit 27 through the electric signal input by the indication input end 271.

The status indication unit 27 is used to indicate the status of whether authentication is currently performed. The status indicating unit 27 comprises a first status indicator 272 and a second status indicator 273, and the fingerprint acquisition circuit 23 comprises a first fingerprint status output 234 and a second fingerprint status output 235; the first fingerprint status output 234 is connected to a first status indicator light 272 and the second fingerprint status output 235 is connected to a second status indicator light 273. The first status indicator light may be a red LED light and the second status indicator light may be a green LED light. In practical application, when a fingerprint acquisition instruction is acquired, the red LED lamp is lightened to prompt a card holder to press a fingerprint. And when the fingerprint authentication by using the fingerprint data of the card holder and the preset fingerprint template data in the access control card is successful, the green LED lamp is lightened. When the fingerprint authentication by using the fingerprint data of the card holder and the preset fingerprint template data in the access card fails, the green LED lamp and the red LED lamp are not lighted.

In another embodiment, the access card includes a timeout timer not shown. When the key is powered on and a locking signal of key on is generated, a starting signal is generated; and starting an overtime timer according to the starting signal, wherein the locking signal is used for locking the energy storage power supply in a power supply state within the timing duration of the overtime timer, the timing duration of the overtime timer is equal to the power-on duration, and the timing duration is longer than the communication time of the security chip and the fingerprint acquisition module. Therefore, even if the key is released, normal power supply of the security chip can be guaranteed, normal communication between the security chip and the fingerprint acquisition module is completed, and communication between the fingerprint access control card and the access control system is supported. The method further comprises disconnecting the power supply of the energy storage power supply when the timeout timer reaches the time duration. Therefore, the communication completion of the security chip and the fingerprint acquisition module can be ensured. And when the safety chip is not communicated with the fingerprint acquisition module, the fingerprint acquisition module can be powered off after the power-on time reaches the timing time. Meanwhile, after the power-on time reaches the timing time, the fingerprint acquisition module is closed, and the power consumption of the access control equipment can be reduced.

The timing duration may be set according to a user requirement, for example, the timing duration may be 200ms to 500 ms. The timing duration may also be an average value of communication durations of the fingerprint acquisition module and the security chip. And are not limited in detail herein. The timing duration of the communication between the fingerprint acquisition module and the security chip can be as long as the timing duration can be completed.

The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Claims (10)

1. An access card, characterized in that the access card (20) comprises:

the fingerprint identification device comprises a secure chip (21) and a fingerprint acquisition circuit (23), wherein the secure chip (21) comprises a processing circuit (22), the processing circuit (22) comprises a first power output end (221), and the processing circuit (22) powers on the fingerprint acquisition circuit (23) through the first power output end (221);

the fingerprint acquisition circuit (23) comprises a first power input end (231) and a fingerprint data transceiving end (232), the first power input end (231) is connected with the first power output end (221), and the fingerprint acquisition circuit (23) acquires the power of the first power output end (221) through the first power input end (231);

the processing circuit (22) further comprises a fingerprint identification state memory (25) and a processing data transceiving end (222), the processing data transceiving end (222) is connected with the fingerprint data transceiving end (232), the processing circuit (22) sends a fingerprint acquisition instruction to the fingerprint acquisition circuit (23) through the processing data transceiving end (222), the fingerprint acquisition circuit (23) acquires the fingerprint data of a cardholder of the access control card (20) according to the fingerprint acquisition instruction through the fingerprint data transceiving end (232), and the fingerprint data transceiving end (232) outputs the fingerprint data; the processing circuit (22) receives the fingerprint data through the processing data transceiving end (222), the processing circuit (22) performs fingerprint authentication comparison on the fingerprint data and preset fingerprint template data in the security chip (21) to obtain a fingerprint identification state of the access control card (20), and the fingerprint identification state is stored in the fingerprint identification state memory (25).

2. The access card of claim 1, wherein the access card (20) further comprises a key, a power supply control circuit (24) and an energy storage power supply (29);

the key is connected with the power supply control circuit (24); when the key is pressed, the power supply control circuit (24) is switched on;

the power supply control circuit (24) is respectively connected with the energy storage power supply (29), the fingerprint acquisition circuit (23) and the safety chip (21), and the energy storage power supply (29) transmits energy to the safety chip (21);

the power supply control circuit (24) comprises a locking electric control circuit (244) connected with the fingerprint acquisition circuit (23);

the processing data transceiving end (222) of the security chip (21) is connected with the locking electric control circuit (244), the security chip (21) receives the energy transmitted by the power supply control circuit (24), the processing circuit (22) supplies power to the fingerprint acquisition circuit (23) through the first power output end (221), and the processing circuit (22) sends a locking power supply instruction to the locking electric control circuit (244) through the processing data transceiving end (222) by the fingerprint acquisition circuit (23).

3. Entrance guard card according to claim 2, characterized in that the energy storage power supply (29) comprises a third power supply output (291), the third power supply output (291) being connected to the power supply control circuit (24), the power supply control circuit (24) being switched on when the key is pressed;

the power supply control circuit (24) comprises a third power supply input end (241), a second power supply output end (242) and a locking electric control circuit (244); the lock-out control circuit (244) is connected with the fingerprint acquisition circuit (23); the third power input (241) is connected with the third power output (291), the second power output (242) is connected with the security chip (21), and the energy storage power supply (29) supplies energy to the security chip (21) through the third power output (291);

the security chip (21) comprises a second power input end (223), the second power input end (223) is connected with the second power output end (242), and the processing data transceiving end (222) is connected with the fingerprint acquisition circuit (23); the second power input end (223) of the security chip (21) receives the energy transmitted by the second power output end (242), the processing circuit (22) supplies power to the fingerprint acquisition circuit (23) through the first power output end (221), and the processing circuit (22) sends the locking instruction to the fingerprint acquisition circuit (23) through the processing data transceiving end (222); the fingerprint acquisition circuit (23) comprises a first fingerprint control end (233), the first fingerprint control end (233) is connected with the locking electric control circuit (244), and the first fingerprint control end (233) sends the locking power supply instruction to the locking electric control circuit (244).

4. Entrance guard card according to claim 2, characterized in that the entrance guard card (20) further comprises a unique identification number memory (30) and a non-antenna (26), the unique identification number memory (30) is connected with the fingerprint identification state memory (25), the unique identification number memory (30) stores an invalid identification number by default;

the processing circuit (22) further comprises a first information processing terminal (224) and a control transceiving terminal (225), the control transceiving terminal (225) is connected with the non-contact antenna (26), the first information processing terminal (224) is connected with the unique identification number memory (30), and when the authentication type of the access control card (20) is a unique identification number authentication type, the processing circuit (22) detects that the fingerprint identification state in the fingerprint identification state memory (25) is a state in which fingerprint authentication fails or a state in which fingerprint authentication is not performed, the fingerprint identification state memory (25) is maintained to store the invalid identification number through the first information processing terminal (224);

when entrance guard card (20) and entrance guard's equipment communication, processing circuit (22) read out the serial number in unique identification number memory (30), control transceiver end (225) are through not connecing antenna (26) to send invalid identification number for entrance guard's equipment.

5. Entrance card according to claim 2, characterized in that the entrance card (20) further comprises a unique identification number memory (30), the unique identification number memory (30) being connected to the fingerprint identification state memory (25), the unique identification number memory (30) storing an invalid identification number by default; processing circuit (22) still includes first information processing end (224), first information processing end (224) with only identify number memory (30) are connected, and is right the authentication type of entrance guard's card (20) is only identify number authentication type, processing circuit (22) detect in fingerprint identification state memory (25) when the fingerprint identification state is the successful state of fingerprint authentication, through first information processing end (224) to only identify number memory (30) write in entrance guard's card serial number.

6. The access card of claim 2, further comprising a non-access antenna (26), wherein the processing circuit (22) comprises a control transceiver (225), the control transceiver (225) is connected to the non-access antenna (26), the authentication type of the access card (20) is a key authentication type, and when the access card (20) communicates with an access device, the processing circuit (22) receives data to be encrypted, which is sent by the access device, through the non-access antenna (26) by the control transceiver (225); when the processing circuit (22) detects that the fingerprint identification state in the fingerprint identification state memory (25) is a fingerprint authentication success state, the processing circuit (22) encrypts the data to be encrypted by using a secret key of the access control card (20) to obtain ciphertext data, and the ciphertext data is transmitted to the access control equipment through the control transceiving terminal (225).

7. Entrance guard card according to claim 2, characterized in that the processing circuit (22) detects that the fingerprint identification status in the fingerprint identification status memory (25) is a fingerprint authentication failure status or a status without fingerprint authentication, the access control card (20) also comprises a non-connection antenna (26), the processing circuit (22) comprises a control transceiving end (225), the control receiving and transmitting terminal (225) is connected with the non-receiving antenna (26), when the access control card (20) is communicated with the access control equipment, for the condition that the authentication type of the access control card (20) is a key authentication type, the processing circuit (22) receives data to be encrypted sent by the access control equipment through a non-access antenna (26) by a control transceiving terminal (225), and the processing circuit (22) generates a message of authentication failure, and transmitting a message of authentication failure to the access control equipment through the control transceiving terminal (225).

8. Entrance guard card according to claim 2, characterized in that the entrance guard card (20) comprises a non-contact antenna (26), a charging circuit (28) connected to the non-contact antenna (26); the charging circuit (28) is respectively connected with the energy storage power supply (29) and the fingerprint acquisition circuit (23), and the safety chip (21) outputs a disconnection instruction of the charging circuit (28) to the fingerprint acquisition circuit (23) through the processing data transceiving terminal (222);

the fingerprint acquisition circuit (23) comprises a first fingerprint control end (233) and a second fingerprint control end (236), and the second fingerprint control end (236) is connected with the charging circuit (28);

the power supply control circuit (24) comprises a signal control terminal (243); the first fingerprint control terminal (233) is connected with the signal control terminal (243), the first fingerprint control terminal (233) sends a power supply disconnection instruction to the signal control terminal (243), and the second fingerprint control terminal (236) sends the power supply disconnection instruction to the charging circuit (28).

9. Entrance card according to claim 2, characterized in that the entrance card (20) comprises a status indication unit (27), the status indication unit (27) being connected to the fingerprint acquisition circuit (23);

the status indication unit (27) comprises an indication input (271);

the fingerprint acquisition circuit (23) comprises a fingerprint state output end (237), the fingerprint state output end and the indication input end (271), the fingerprint acquisition circuit (23) outputs an electric signal of a fingerprint identification state through the fingerprint state output end (237), and the state indication unit (27) lights or closes the indication of the state indication unit (27) through the electric signal input by the indication input end (271).

10. The access card of claim 9, wherein the status indication unit (27) comprises a first status indicator light (272) and a second status indicator light (273), and the fingerprint acquisition circuit (23) comprises a first fingerprint status output (234) and a second fingerprint status output (235); the first fingerprint status output (234) is connected to the first status indicator light (272), and the second fingerprint status output (235) is connected to the second status indicator light (273).

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