CN210605763U

CN210605763U - Device for reading and writing various cards for vehicle-mounted terminal

Info

Publication number: CN210605763U
Application number: CN201922001967.2U
Authority: CN
Inventors: 薛平川
Original assignee: Shanghai Tongli Information Technology Co ltd
Current assignee: Shanghai Tongli Information Technology Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-05-22
Anticipated expiration: 2029-11-19

Abstract

The utility model provides a device that is used for multiple card of readwrite of vehicle mounted terminal, including single chip module, IC cassette, RFID driver chip and LCD display module, wherein: the single chip microcomputer module is connected with the RFID driving chip through the SPI interface; the LCD display module is connected with the single chip microcomputer module; the IC card seat is connected with the singlechip module through a power pin, a reset pin, a clock pin, a data pin and a plug-in detection pin. The utility model can be compatible with various cards, and realizes one machine with multiple cards; not only can read contact IC cards, but also can read non-contact IC cards; visual reading is realized by arranging an LCD screen; based on the utility model discloses a hardware architecture helps guaranteeing that contact IC-card data can not lose in daily use.

Description

Device for reading and writing various cards for vehicle-mounted terminal

Technical Field

The utility model relates to a IC-card, RFID card specifically, relate to a device of multiple card can be read and written to vehicle mounted terminal.

Background

The contact IC card is used for storing driver information in an operating vehicle, one problem that the vehicle cannot avoid in the driving process is vehicle body vibration caused by road conditions, the vibration phenomenon is very unfavorable for reading and writing of the contact IC card, on one hand, the IC card is easy to misreport and plug, on the other hand, the phenomenon of 'point contact' between a metal sheet and a contact of the contact IC card is easy to cause the phenomenon of missing of the contact IC card data. In operating vehicles, non-contact IC cards (also called RFID cards or inductive IC cards) are used to store passenger information, and the RFID cards are used to record passenger information and consumption behaviors. Therefore, it is also necessary how to distinguish different IC card types according to the characteristics of different IC cards.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a device that is used for on-vehicle terminal can read and write multiple card.

According to the utility model provides a pair of a device that is used for multiple card of readwrite of vehicle-mounted terminal, including single chip module, IC cassette, RFID driver chip and LCD display module, wherein:

the single chip microcomputer module is connected with the RFID driving chip through the SPI interface;

the LCD display module is connected with the single chip microcomputer module;

the IC card seat is connected with the singlechip module through a power pin, a reset pin, a clock pin, a data pin and a plug-in detection pin.

Preferably, the single chip microcomputer module comprises a NUC131SD2AE single chip microcomputer; the RFID driving chip comprises an FM17520 chip; the IC card seat comprises a MUP-C837 chip.

Preferably, the single chip microcomputer module is connected with the vehicle-mounted terminal chip through a serial port.

Preferably, the 2 nd pin of the IC card socket is connected to the 9 th pin of the single chip module;

the No. 3 pin of the IC card seat is connected with the No. 8 pin of the single chip microcomputer module;

the 4 th pin of the IC card seat is connected with the 13 th pin of the singlechip module;

the 9 th pin of the IC card seat is connected with the 7 th pin of the singlechip module;

and the 7 th pin of the IC card seat is connected with the 6 th pin of the singlechip module.

Preferably, the 6 th pin of the RFID driver chip is connected to the 19 th pin of the single chip module;

the 23 st pin of the RFID driving chip is connected with the 1 st pin of the single chip microcomputer module;

the 24 th pin of the RFID driving chip is connected with the 28 th pin of the single chip microcomputer module;

a 29 th pin of the RFID driving chip is connected with a 27 th pin of the singlechip module;

a 30 th pin of the RFID driving chip is connected with a 26 th pin of the single chip microcomputer module;

and the 31 st pin of the RFID driving chip is connected with the 25 th pin of the singlechip module.

Preferably, the LCD display module is connected with pins 33-40 and 44-48 of the singlechip module.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model can be compatible with various cards, and realizes one machine with multiple cards;

2. the utility model can read both contact IC card and non-contact IC card;

3. the utility model is provided with an LCD screen to realize visual reading;

4. based on the utility model discloses a hardware architecture helps guaranteeing that contact IC-card data can not lose in daily use.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a structural view of an apparatus for a vehicle-mounted terminal that can read and write various cards;

fig. 2 is a structure view of an IC card holder of the apparatus for reading and writing various cards for the in-vehicle terminal;

FIG. 3 is a structural view of an RFID driving chip of the device for a vehicle-mounted terminal to read and write various cards;

fig. 4 is a structure diagram of a single chip microcomputer module of the device for reading and writing various cards for the vehicle-mounted terminal.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 to 4, according to the present invention, a device for multiple cards to be read and written for a vehicle-mounted terminal includes a single chip module (NUC131SD2 AE): the method is mainly used for controlling the time sequence of the read-write pin of the contact type IC card, configuring and driving an RFID chip and the like; IC card seat: providing a hardware interface for operating the IC card, wherein the hardware interface comprises a PWR (power supply pin), a RST (reset pin), a CLK (clock pin), a DAT (data pin) and an IN (plug-IN detection pin); RFID driver chip (FM 17520): mainly responsible for driving contactless IC cards (RFID cards). An LCD display module: the card information display device is mainly responsible for displaying card information. The single chip microcomputer and the RFID driving chip (FM17520) are connected through an SPI interface, the FM17520 is configured through the SPI interface, and the FM17520 is used for identifying and reading the RFID card. The 2 nd pin of the IC card seat is connected with the 9 th pin of the singlechip module; the No. 3 pin of the IC card seat is connected with the No. 8 pin of the singlechip module; the 4 th pin of the IC card seat is connected with the 13 th pin of the singlechip module; the 9 th pin of the IC card seat is connected with the 7 th pin of the singlechip module; the 7 th pin of the IC card seat is connected with the 6 th pin of the singlechip module. The 6 th pin of the RFID driving chip is connected with the 19 th pin of the single chip microcomputer module; the 23 st pin of the RFID driving chip is connected with the 1 st pin of the single chip microcomputer module; the 24 th pin of the RFID driving chip is connected with the 28 th pin of the singlechip module; a 29 th pin of the RFID driving chip is connected with a 27 th pin of the singlechip module; a 30 th pin of the RFID driving chip is connected with a 26 th pin of the single chip microcomputer module; and the 31 st pin of the RFID driving chip is connected with the 25 th pin of the singlechip module. The LCD display module is connected with the 33 th to 40 th pins and the 44 th to 48 th pins of the singlechip module.

The device is realized by the following steps:

the device comprises a contact type IC card seat and an RFID driving chip, wherein the contact type IC card seat and the RFID driving chip are both driven and configured by the MCU; therefore, the device can read and write both the contact type IC card and the non-contact type IC card.

In order to distinguish different contact type IC cards, a singlechip module is used for simulating the time sequence of different IC cards to read the information of the IC, and the type of the contact type IC card is distinguished through the solidified information in the cards. Such as SLE4442 card and AT24C02 card, the one-chip microcomputer simulates the timing sequence of SLE4442 card when the card is inserted to read the solidified information, and distinguishes whether the card is SLE4442 by identifying the solidified information; then the single chip computer simulates the time sequence of the AT24C02 card to read information, and if the card responds, the card is considered to be the AT24C02 card.

In order to ensure that contact IC data cannot be lost in a famous way, the card reading and writing process is optimized: when the single chip microcomputer detects that the card is inserted, each pin on the IC card seat can be enabled and read-write operation can be executed when the insertion state of the card is stable, and each pin is disabled immediately after the read-write operation is finished; the time for electrifying the contact type IC card in the whole process is extremely short, so that the data loss of the contact type IC card can not be caused even if the 'point contact' phenomenon exists in the running process of the vehicle. The device communicates with the main chip of the vehicle-mounted terminal through a serial port, card data are transmitted through the serial port, and an LCD screen is refreshed.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The utility model provides a device that a multiple card of readable and writable for vehicle terminal which characterized in that, includes single chip module, IC cassette, RFID driver chip and LCD display module, wherein:

the LCD display module is connected with the single chip microcomputer module;

2. The device for multiple readable and writable cards of a vehicle-mounted terminal according to claim 1, wherein the single chip microcomputer module comprises a NUC131SD2AE single chip microcomputer; the RFID driving chip comprises an FM17520 chip; the IC card seat comprises a MUP-C837 chip.

3. The device for multiple readable and writable cards of the vehicle-mounted terminal according to claim 1, wherein the single chip microcomputer module is connected with the vehicle-mounted terminal chip through a serial port.

4. The apparatus for a readable and writable variety of cards for a vehicle-mounted terminal according to claim 2,

the 2 nd pin of the IC card seat is connected with the 9 th pin of the singlechip module;

5. The apparatus for a readable and writable variety of cards for a vehicle-mounted terminal according to claim 2,

the 6 th pin of the RFID driving chip is connected with the 19 th pin of the single chip microcomputer module;

6. The device for reading and writing various cards for the vehicle-mounted terminal according to claim 2, wherein the LCD display module is connected with pins 33-40 and 44-48 of the single chip microcomputer module.