CN215910900U - USB interface intelligent IC card identifier based on ISO7816 standard - Google Patents
USB interface intelligent IC card identifier based on ISO7816 standard Download PDFInfo
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Abstract
The utility model discloses a USB interface intelligent IC card recognizer based on ISO7816 standard, comprising a shell, wherein the shell is composed of a shell and a sealing cover which are mutually inserted, a USB interface intelligent IC card recognition module is sealed in the shell, the USB interface intelligent IC card recognition module comprises a main control MCU, a serial port type USB interface, an ISO7816 asynchronous serial intelligent card interface and an ISO7816 intelligent IC card, the main control MCU is HC32L130F8UA of a Huada semiconductor, the upstream of the main control MCU is connected with the serial port type USB interface, the downstream of the main control MCU is connected with the ISO7816 asynchronous serial intelligent card interface, and the ISO7816 asynchronous serial intelligent card interface is fixedly connected with the ISO7816 intelligent IC card; the main control MCU is connected with external identity authentication equipment through a serial port type USB interface, converts a serial port signal sent by the identity authentication equipment into a logic level which accords with an ISO 7816-3 time sequence and sends the logic level to an ISO7816 type intelligent IC card, and the conversion of RS232 and 7816 protocols is realized. The utility model has the advantages of simple and stable appearance design, delicateness, delicacy, safety and reliability, and wider application scenes in the field of identity authentication.
Description
Technical Field
The utility model belongs to the technical field of intelligent IC card expansion application, and particularly relates to a USB interface intelligent IC card identifier based on an ISO7816 standard.
Background
Because of the high security of the smart IC card and the many applications supported by one card, the smart card is used more and more widely. In the field of information security, authentication using a smart IC card is an important means for realizing secure communication. The traditional intelligent IC card reader is large in size, inconvenient to carry, easy to monitor data and limited in application scene.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, provides the USB interface intelligent IC card identifier based on the ISO7816 standard, can be widely applied to the identity authentication equipment of a serial port type USB interface, and has the advantages of small volume, convenience in carrying, safety, reliability and plug and play.
The purpose of the utility model is realized by the following technical scheme.
The utility model relates to a USB interface intelligent IC card recognizer based on ISO7816 standard, which comprises a shell, wherein the shell is composed of a shell and a sealing cover which are mutually inserted, a USB interface intelligent IC card recognition module is sealed in the shell, the USB interface intelligent IC card recognition module comprises a main control MCU, a serial port type USB interface, an ISO7816 asynchronous serial intelligent card interface and an ISO7816 intelligent IC card, the model of the main control MCU is HC32L130F8UA of a Huada semiconductor, the upstream of the main control MCU is connected with the serial port type USB interface, the downstream of the main control MCU is connected with the ISO7816 asynchronous serial intelligent card interface, and the ISO7816 asynchronous serial intelligent card interface is fixedly connected with the ISO7816 intelligent IC card; the main control MCU is connected with external identity authentication equipment through a serial port type USB interface, converts a serial port signal sent by the identity authentication equipment into a logic level which accords with an ISO 7816-3 time sequence and sends the logic level to an ISO7816 type intelligent IC card, and the conversion of RS232 and 7816 protocols is realized.
The shell adopts an aluminum alloy shell to realize the passivation of the USB interface intelligent IC card identification module, and the shell is formed by fixedly connecting an upper cover body and a lower cover body through screws.
The serial port type USB interface comprises an RS232 conversion chip and a USB2.0 interface seat, the model of the RS232 conversion chip is MAX3232CPWR, the USB2.0 interface seat is exposed out of the shell, and the shell is positioned in the sealing cover after being spliced with the sealing cover;
The ISO7816 asynchronous serial intelligent card interface includes card base, triode No. one, triode No. two;
the base electrode of the first triode is respectively connected with a VDD3V3 port of the main control MCU and a GPIO pin PB04 of the main control MCU through a fourth resistor and a fifth resistor, the collector electrode is connected with a pin 1 of the card holder, and the emitter electrode is connected with a pin 6 of the card holder; the base electrode of the second triode is connected with the VDD3V3 port of the main control MCU and the GPIO pin PA15 of the main control MCU through an eighth resistor and a tenth resistor respectively, the collector electrode of the second triode is connected with the VDD3V3 port of the main control MCU, and the emitter electrode of the second triode is connected with the GPIO pin PA15 of the main control MCU.
The ISO7816 asynchronous serial intelligent card interface also includes red, green, blue three-color indicator light, the red is normally bright to represent the USB interface intelligent IC card identification module hardware fault, the red flicker represents the data interaction fault, the green flicker represents the data interaction, the blue is normally bright to represent the USB interface intelligent IC card identification module standby;
The ISO7816 type intelligent IC card selects a double-denier microelectronic FMCOS2.0 intelligent IC card.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
the USB interface intelligent IC card identification module is based on ISO7816 series standards, is small in size, convenient to carry, safe and reliable, and is wider in application scene in the field of identity authentication.
The utility model can be widely applied to the field of intelligent IC card identity verification, compared with the scheme of the traditional intelligent IC card reader, the utility model has the advantages of safety, reliability, convenient carrying, plug and play, non-monitoring of data and the like, can replace an intelligent password key Ukey in a specific application scene, and has more advantages than the traditional intelligent IC card reader. Through practical tests, the intelligent IC card identification accuracy and efficiency of the intelligent IC card reader are not different from those of the traditional card reader scheme.
Drawings
Fig. 1 is a schematic block diagram of a USB interface smart IC card identifier based on the 7816 standard.
Fig. 2 is a circuit diagram of a serial USB interface according to the present invention.
FIG. 3 is a circuit diagram of an ISO7816 asynchronous serial smart card interface in the present invention; wherein the content of the first and second substances,
(a) a card seat wiring diagram, (b) a triode wiring diagram, and (c) a three-color indicator light wiring diagram.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model relates to a USB interface intelligent IC card identifier based on ISO7816 standard, which comprises a shell, wherein the shell is composed of a shell and a sealing cover which are mutually inserted, and a USB interface intelligent IC card identification module is sealed in the shell. The shell adopts the aluminum alloy shell, realizes the passivation to USB interface intelligent IC card identification module, the casing passes through screw fixed connection by upper cover body and lower lid and constitutes, can paste the disposable breakable label of disposal and dismantle the deposit mark under specific scene.
As shown in fig. 1, the USB interface smart IC card identification module includes a main control MCU, a serial USB interface, an ISO7816 asynchronous serial smart card interface, and an ISO7816 smart IC card. The model of the main control MCU is HC32L130F8UA of Huada semiconductor, and the ISO7816 type intelligent IC card selects a double-denier microelectronic FMCOS2.0 intelligent IC card. The upper stream of the main control MCU is connected with a serial port type USB interface, the lower stream of the main control MCU is connected with an ISO7816 asynchronous serial intelligent card interface, the ISO7816 asynchronous serial intelligent card interface is fixedly connected with an ISO7816 intelligent IC card in an inserting mode, the ISO7816 asynchronous serial intelligent card interface is used for fixing an ISO7816 intelligent IC card, and the lower stream interface supports an ISO 7816-3T (equal to 0) protocol. The main control MCU is connected with external identity authentication equipment through a serial port type USB interface, converts serial port signal data sent by the identity authentication equipment into a logic level which accords with an ISO 7816-3 time sequence and sends the logic level to an ISO7816 type intelligent IC card, and the conversion of RS232 and 7816 protocols is achieved.
In order to make the application scene of the USB interface intelligent IC card identification module wider, a serial port type USB interface circuit is designed, and a schematic diagram is shown in figure 2. The serial port signal can be selected from RS232 or TTL signals according to actual conditions. The serial port type USB interface comprises an RS232 conversion chip and a USB2.0 interface seat, the model of the RS232 conversion chip is MAX3232CPWR, and a pin function table is shown in table 1. The USB2.0 interface seat is exposed outside the shell, the shell is positioned in the sealing cover after being spliced with the sealing cover, and the USB interface intelligent IC card identification module only has a communication interface and does not have a maintenance access interface. The USB interface intelligent IC card recognition module is integrated on the PCB, the USB2.0 interface seat is positioned on the front surface of the PCB, and when the intelligent IC card recognition module is inserted, a gold finger (contact) of the intelligent IC chip faces downwards and faces towards the direction of the USB interface.
TABLE 1
In order to meet the requirements of time sequence and electrical characteristics in ISO 7816-3 and the optimization of a module structure, a GPIO analog 7816 interface is directly used, the GPIO pin of an I/O port under the control of master control MCU software completes operations such as resetting, reading and writing and the like of an intelligent IC card chip, and a schematic diagram of the ISO7816 asynchronous serial intelligent card interface is shown in FIG. 3.
The ISO7816 asynchronous serial intelligent card interface circuit is a channel for connecting intelligent IC card and main control MCU, and it can supply power to intelligent IC card, and said circuit is independent of other loops, and can provide voltage-stabilizing circuit with perfect overcurrent protection measure. If a normal intelligent IC card is inserted, the interface circuit provides the required voltage for the intelligent IC card; if a bad intelligent IC card or a metal sheet or the like with power and ground breakdown is inserted, the overcurrent protection loop can immediately cut off the interface power supply voltage to avoid causing short circuit of the interface circuit.
The ISO7816 asynchronous serial intelligent card interface mainly includes card seat ICCARD, a triode Q1 and a triode Q2. The main control MCU is used as a main device in the interface circuit, the intelligent IC card is used as a slave device, the interaction of the main control MCU and the intelligent IC card is established on the basis that the main control MCU sends a signal to the intelligent IC card through the card seat ICCARD metal contact, then the intelligent IC card makes a response, an interaction channel is a single thread, once the main control MCU sends a command to the intelligent IC card, the main control MCU is blocked until the response is received. The contact specification of the smart IC card is shown in table 2.
As shown in fig. 3 (a), pin 1(VCC port) of the card socket ICCARD is connected to GPIO pin PA15 of the main control MCU, pin 6(VPP port) is connected to GPIO pin PB04 of the main control MCU, and the VCC port and the VPP port control the power-on timing of the +3.3V power supply voltage through enable signals 3V3_ EN and IC _ VPP _ EN on the main control MCU, respectively. Pin 2 (reset port RST) of the card holder ICCARD is connected with a GPIO pin PB11 of the main control MCU, pin 3 (clock port CLK) is connected with a GPIO pin PA07 of the main control MCU, pin 5 (ground port GND) is grounded GND, and pin 7(I/O port) is connected with a GPIO pin PA02 of the main control MCU, so that reset signal input, clock signal input and serial data input/output are provided for the intelligent IC card.
The base electrode of the first triode Q1 is respectively connected with a VDD3V3 port of the main control MCU and a GPIO pin PB04 of the main control MCU through a fourth resistor R4 and a fifth resistor R5, the collector electrode is connected with a pin 1 of the card socket ICCARD, and the emitter electrode is connected with a pin 6 of the card socket ICCARD; the base electrode of the second triode Q2 is connected with the VDD3V3 port of the main control MCU and the GPIO pin PA15 of the main control MCU through an eighth resistor R8 and a tenth resistor R10, respectively, the collector electrode is connected with the VDD3V3 port of the main control MCU, and the emitter electrode is connected with the GPIO pin PA15 of the main control MCU, as shown in fig. 3 (b). Wherein, R4 ═ 10K, R5 ═ 1K, R8 ═ 10K, R10 ═ 1K, and PNP type is adopted for the first triode Q1 and the second triode Q2.
TABLE 2 Smart IC card contact assignment
| Contact number | Dispensing | Contact number | Dispensing |
| C1 | Supply Voltage (VCC) | C5 | Ground (GND) |
| C2 | Reset (RST) | C6 | Programming Voltage (VPP) |
| C3 | Clocks (CLK) | C7 | Input/output (I/O) |
| C4 | Retention | C8 | Retention |
Because the utility model selects the fixed card type design, the intelligent IC card is fixed on the card seat of the module in advance and can not be pulled out midway, therefore, the intelligent IC card and the main control MCU are electrified simultaneously. After power-on, the main control MCU acquires ATR (answer To reset) by resetting the smart IC card. The clock signal of the intelligent IC card is directly output by the main control MCU to be a system clock signal HCLK, the frequency of the clock signal is 4MHz, the duty ratio is 50% during the stable operation, and the requirement of ISO 7816-3 time sequence is completely met.
For the convenience of users to learn the module state, the ISO7816 asynchronous serial intelligent card interface is also added with a red, green and blue three-color indicator lamp, wherein, red normally-on indicates the hardware fault of the USB interface intelligent IC card identification module, red flashing indicates the data interaction fault, green flashing indicates that the data interaction is being carried out, and blue normally-on indicates that the USB interface intelligent IC card identification module is standby. Specifically, as shown in fig. 3 (c), pin 1 (red light port R) of the tristimulus indicator RGB _ LED is connected to the LED _ R port of the main control MCU through a sixteen-numbered resistor R16, pin 2 (green light port G) is connected to the LED _ G port of the main control MCU through a seventeenth-numbered resistor R17, pin 3 (blue light port B) is connected to the LED _ B port of the main control MCU through an eighteenth-numbered resistor R18, and pin 4, pin 2 is connected to the VDD3V3 port of the main control MCU. Wherein, R16 ═ 1K, R17 ═ 4.7K, and R18 ═ 1K.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the utility model is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the utility model as defined by the appended claims.
Claims (6)
1. An ISO7816 standard-based USB interface intelligent IC card identifier comprises a shell, wherein the shell is composed of a shell body and a sealing cover which are mutually inserted, and the ISO7816 standard-based USB interface intelligent IC card identifier is characterized in that a USB interface intelligent IC card identification module is sealed in the shell body, the USB interface intelligent IC card identification module comprises a main control MCU, a serial port type USB interface, an ISO7816 asynchronous serial intelligent card interface and an ISO7816 intelligent IC card, the main control MCU is HC32L130F8UA of a Huada semiconductor, the upstream of the main control MCU is connected with the serial port type USB interface, the downstream of the main control MCU is connected with the ISO7816 asynchronous serial intelligent card interface, and the ISO7816 asynchronous serial intelligent card interface is fixedly connected with the ISO7816 intelligent IC card; the main control MCU is connected with external identity authentication equipment through a serial port type USB interface, converts a serial port signal sent by the identity authentication equipment into a logic level which accords with an ISO 7816-3 time sequence and sends the logic level to an ISO7816 type intelligent IC card, and the conversion of RS232 and 7816 protocols is realized.
2. The ISO7816 standard based USB interface intelligent IC card identifier as recited in claim 1, wherein the housing is an aluminum alloy housing to passivate the USB interface intelligent IC card identification module, and the housing is composed of an upper cover and a lower cover fixedly connected by screws.
3. The ISO7816 based USB interface smart IC card identifier as recited in claim 1, wherein the serial port type USB interface comprises an RS232 conversion chip and a USB2.0 interface seat, the RS232 conversion chip has a model number MAX3232CPWR, the USB2.0 interface seat is exposed outside the housing, and the housing and the sealing cover are inserted and then located in the sealing cover;
pin 1 of the RS232 conversion chip is grounded through an eleventh capacitor, pin 2 is grounded through a fourteenth capacitor, pin 3 is directly grounded, a twelfth capacitor is connected between pin 4 and pin 5, pin 6 is grounded through a thirteenth capacitor, pin 7 is connected with pin 2 of the USB2.0 interface socket, pin 8 is connected with pin 3 of the USB2.0 interface socket, pin 9 is connected with a U0_ RX port of the main control MCU, pin 10 is connected with a U0_ TX port of the main control MCU, pin 15 is grounded, pin 16 is connected with a VDD3V3 port of the main control MCU, and a fifteenth capacitor is connected between pin 15 and pin 16;
pin 1 of the USB2.0 interface seat is connected to 5V voltage, pin 4, pin 5 and pin 6 are all grounded, pin 2 of the USB2.0 interface seat and a U0_ TX port of the main control MCU are connected to device one, pin 3 and a U0_ RX port of the main control MCU are connected to device two, the device one and the device two both use 0 ohm resistors or NC, when a serial signal provided by the identity authentication device is a TTL signal, the device one and the device two both use 0 ohm resistors, and when a serial signal provided by the identity authentication device is an RS232 signal, the device one and the device two both use NC.
4. The ISO7816 based USB interface smart IC card identifier of claim 1, wherein the ISO7816 asynchronous serial smart card interface comprises a card holder, a first triode, a second triode;
pin 1 of the card holder is connected with a GPIO pin PA15 of the main control MCU, pin 2 is connected with a GPIO pin PB11 of the main control MCU, pin 3 is connected with a GPIO pin PA07 of the main control MCU, pin 5 is grounded, pin 6 is connected with a GPIO pin PB04 of the main control MCU, and pin 7 is connected with a GPIO pin PA02 of the main control MCU;
the base electrode of the first triode is respectively connected with a VDD3V3 port of the main control MCU and a GPIO pin PB04 of the main control MCU through a fourth resistor and a fifth resistor, the collector electrode is connected with a pin 1 of the card holder, and the emitter electrode is connected with a pin 6 of the card holder; the base electrode of the second triode is connected with the VDD3V3 port of the main control MCU and the GPIO pin PA15 of the main control MCU through an eighth resistor and a tenth resistor respectively, the collector electrode of the second triode is connected with the VDD3V3 port of the main control MCU, and the emitter electrode of the second triode is connected with the GPIO pin PA15 of the main control MCU.
5. The ISO7816 standard based USB interface smart IC card identifier of claim 4, wherein the ISO7816 asynchronous serial smart card interface further comprises a red, green and blue three-color indicator light, wherein the red color is normally on to indicate a USB interface smart IC card identification module hardware fault, the red color is flashing to indicate a data interaction fault, the green color is flashing to indicate that data interaction is in progress, and the blue color is normally on to indicate that the USB interface smart IC card identification module is in standby;
pin 1 of tristimulus designation lamp is through sixteen numbers resistance connection master control MCU's LED _ R ports, and pin 2 is through seventeen numbers resistance connection master control MCU's LED _ G ports, and pin 3 is through eighteen numbers resistance connection master control MCU's LED _ B ports, and pin 4 pin 2 is connected master control MCU's VDD3V3 port.
6. The ISO7816 based USB interface smart IC card identifier of claim 1, wherein the ISO7816 type smart IC card is selected as a double denier microelectronic FMCOS2.0 smart IC card.
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| CN202120658037.9U CN215910900U (en) | 2021-03-31 | 2021-03-31 | USB interface intelligent IC card identifier based on ISO7816 standard |
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| CN202120658037.9U CN215910900U (en) | 2021-03-31 | 2021-03-31 | USB interface intelligent IC card identifier based on ISO7816 standard |
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Address after: Room 4, Floor 1, No. 139 Shenzhou Avenue, Binhai High-tech Zone, Binhai New Area, Tianjin, 300392 Patentee after: Tianjin Photoelectric Gathered Energy Communication Co.,Ltd. Address before: 300211 No. 6, Taishan Road, Tianjin, Hexi District Patentee before: JUNENG SPECIAL COMMUNICATION EQUIPMENT CO.,LTD., TOEC GROUP CO.,LTD. |