CN210955145U

CN210955145U - Computer card swiping logout system for electronic reading room

Info

Publication number: CN210955145U
Application number: CN202020143586.8U
Authority: CN
Inventors: 崔丹丹
Original assignee: Kaifeng University
Current assignee: Kaifeng University
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-07-07
Anticipated expiration: 2030-01-22

Abstract

The utility model provides an electronic reading room computer system of logging off of punching card, is including being used for borrowing a plurality of computers of registered host computer and passing through the LAN with the host computer and being connected, the computer is connected with the device of punching the card, the device of punching the card includes main control unit, execution unit and radio frequency module, radio frequency module is used for reading the IC-card, and radio frequency module is connected with main control unit, main control unit is used for according to the work of IC-card information control execution unit, and main control unit is connected with execution unit, execution unit is used for sending the shutdown instruction to the computer, is connected with serial units between execution unit and the computer, the device of punching the card communicates through serial units with the computer. The utility model discloses be provided with the device of punching the card, when the student gets off the machine, punch the card through the device of punching the card and close the login information that the computer cancelled the host computer of registration department simultaneously.

Description

Computer card swiping logout system for electronic reading room

Technical Field

The utility model relates to a computer management field, concretely relates to electron reading room computer system of logging out of punching card.

Background

In order to facilitate students to use computers to study and work at colleges, an electronic reading room is arranged in a campus of colleges and universities. Under normal conditions, a student can enter the electronic reading room to use the computer by holding the campus card to register outside the electronic reading room, and can leave the electronic reading room after leaving the computer by logging out the campus card in the electronic reading room.

The problems exist in the use of the electronic reading room, and some students forget to turn off the computer when leaving, so that the computer is always in a power-on state, the power resources are wasted, and the service life of the computer is shortened.

Disclosure of Invention

The utility model discloses a solve the unreasonable problem of computer usage in the electron reading room, provide an electron reading room computer system of logging out of punching the card, be provided with the device of punching the card, when the student makes the computer, close the login information that the computer was simultaneously logged out the host computer of registration department through the device of punching the card.

The technical scheme of the utility model is that:

the utility model provides an electronic reading room computer system of logging off of punching card, is including being used for borrowing a plurality of computers of registered host computer and passing through the LAN with the host computer and being connected, the computer is connected with the device of punching the card, the device of punching the card includes main control unit, execution unit and radio frequency module, radio frequency module is used for reading the IC-card, and radio frequency module is connected with main control unit, main control unit is used for according to the work of IC-card information control execution unit, and main control unit is connected with execution unit, execution unit is used for sending the shutdown instruction to the computer, is connected with serial units between execution unit and the computer, the device of punching the card communicates through serial units with the computer.

Further, the main control unit comprises a single chip microcomputer.

Further, the execution unit includes the encoder, the encoder is connected with the IO mouth of singlechip, the encoder is used for converting the level signal that the singlechip sent into binary digital signal, the encoder adopts HT82K629A keyboard coding chip, be connected with the opto-coupler between HT82K629A keyboard coding chip and the singlechip.

Further, the serial port unit comprises a USB interface and an RS232 serial port, the USB interface is connected with the HT82K629A keyboard coding chip, the RS232 serial port is connected with the single chip microcomputer, and the RS232 serial port is used for the communication between the single chip microcomputer and the computer.

Further, the radio frequency module comprises an RC522 chip and an antenna, the antenna is used for sensing an IC card, pins RX, VMID, TX1 and TX2 of the RC522 chip are connected with the antenna, and pins SDA, D5, D6 and D7 of the RC522 chip are connected with an IO port of the single chip microcomputer.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses be provided with the device of punching the card, the device of punching the card includes main control unit, execution unit and radio frequency module, radio frequency module is used for reading the IC-card, and radio frequency module and main control unit are connected, main control unit is used for controlling the execution unit work according to IC-card information, and main control unit and execution unit are connected, execution unit is used for sending the shutdown instruction to the computer, is connected with serial units between execution unit and the computer, the device of punching the card communicates through serial units with the computer. When the borrowing registration host computer works, a student swipes a card at the borrowing registration host computer, the host computer records login information, the student selects a computer to operate the computer, when the student operates off the computer, the student swipes the card through a card swiping device, the radio frequency module identifies IC card information, the main control unit receives IC card signals and sends the signals to the computer through the serial port unit, the computer enables the borrowing registration host computer login information to be cancelled through a local area network, meanwhile, the main control unit controls the execution unit to work, and the execution unit enables the computer to be shut down through the serial port unit. If the student leaves the electronic reading room without swiping a card in the using process, the computer cannot be closed, and the login information of the borrowing and registering host computer is kept all the time. The electronic reading room manager finds out students to perform criticizing education through the IC card login information. In order to timely log off and log on, if students use other modes to close the computer, the students need to restart the computer to carry out card swiping and log off. Thereby improving the responsibility of students and solving the problem that the students forget to shut down when leaving the electronic reading room.

Drawings

Fig. 1 is an electrical schematic diagram of the computer card-swiping logout system of the electronic reading room of the present invention.

Fig. 2 is an electrical schematic diagram of the execution unit and the serial port unit of the computer card swiping logout system of the electronic reading room.

The reference numbers in the figures are: the system comprises a computer 1, a main control unit 2, an execution unit 3, a radio frequency module 4 and a serial port unit 5.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as shown in fig. 1-2, a computer card swiping logout system for an electronic reading room comprises a host for borrowing and registering and a plurality of computers 1 connected with the host through a local area network, the computer 1 is connected with a card swiping device, the card swiping device comprises a main control unit 2, an execution unit 3 and a radio frequency module 4, the radio frequency module 4 is used for reading an IC card, the radio frequency module 4 is connected with the main control unit 2, the main control unit 2 is used for controlling the execution unit 3 to work according to IC card information, the main control unit 2 is connected with the execution unit 3, the execution unit 3 is used for sending a shutdown instruction to the computer 1, a serial port unit 5 is connected between the execution unit 3 and the computer 1, and the card swiping device is communicated with the computer 1 through the serial port unit 5.

In order to optimize the product structure, the main control unit 2 comprises a single chip microcomputer, and the single chip microcomputer adopts an STC89C51 chip.

For optimizing product structure, execution unit 3 includes the encoder, the IO mouth of encoder and singlechip is connected, the encoder is used for converting the level signal that the singlechip sent into binary digital signal, the encoder adopts HT82K629A keyboard coding chip, be connected with the opto-coupler between HT82K629A keyboard coding chip and the singlechip. As shown in fig. 1, specifically, a P2.1 pin of the single chip is connected to a pin 1 of the optical coupler, pins 3 and 4 of the optical coupler are respectively connected to R7 and C8 pins of the HT82K629A keyboard encoding chip, and according to the encoding table of the HT82K629A keyboard encoding chip, when the R7 and C8 pins of the HT82K629A keyboard encoding chip act, the HT82K629A keyboard encoding chip simulates a computer keyboard to shut down the computer 1.

In order to optimize the product structure, the serial port unit 5 comprises a USB interface and an RS232 serial port, the USB interface is connected with an HT82K629A keyboard coding chip, the RS232 serial port is connected with the single chip microcomputer, and the RS232 serial port is used for the communication between the single chip microcomputer and the computer 1. Specifically, as shown in fig. 2, a USB output pin of the HT82K629A keyboard encoding chip is connected to a USB interface pin, and TXIN and RXOUT pins of the RS232 serial port are connected to P3.1 and P3.0 pins of the single chip.

The radio frequency module 4 comprises an RC522 chip and an antenna, the antenna is used for sensing an IC card, pins RX, VMID, TX1 and TX2 of the RC522 chip are connected with the antenna, and pins SDA, D5, D6 and D7 of the RC522 chip are connected with pins P1.3-P1.6 of the single chip microcomputer.

The student swipes the card through campus IC card outside the electronic reading room, inputs information at the borrowing registration host computer, and the reading room administrator allows the student to enter the electronic reading room to independently select computer study or work after the student logs in.

When the student is off, the student swipes the card through the card swiping device, place the IC-card near the antenna, RC522 chip reads IC-card information, and with information transmission to singlechip, the singlechip passes through the RS232 serial ports with information transmission to computer 1, through computer 1 internal program and LAN with IC-card information transmission to borrow the registration host computer department and log in and logout, the P2.1 pin of singlechip sends high level signal and makes the opto-coupler switch on, the pin R7 and the C8 of HT82K629A keyboard coding chip move simultaneously after the opto-coupler switches on, simulation computer 1 keyboard carries out the software shutdown to computer 1. The computer 1 is turned off and the students leave the electronic reading room.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes and modifications made by the structure, features and principles of the invention should be included in the claims of the present invention.

Claims

1. A computer card-swiping logout system for an electronic reading room comprises a host for borrowing registration and a plurality of computers (1) connected with the host through a local area network, it is characterized in that the computer (1) is connected with a card swiping device, the card swiping device comprises a main control unit (2), an execution unit (3) and a radio frequency module (4), the radio frequency module (4) is used for reading an IC card, the radio frequency module (4) is connected with the main control unit (2), the main control unit (2) is used for controlling the execution unit (3) to work according to the IC card information, the main control unit (2) is connected with the execution unit (3), the execution unit (3) is used for sending a shutdown instruction to the computer (1), a serial port unit (5) is connected between the execution unit (3) and the computer (1), the card swiping device is communicated with the computer (1) through the serial port unit (5).

2. The computer card-swiping logout system for an electronic reading room according to claim 1, wherein said main control unit (2) comprises a single chip microcomputer.

3. The computer card swiping and logout system for an electronic reading room according to claim 2, wherein the execution unit (3) comprises an encoder, the encoder is connected with the IO port of the single chip microcomputer, the encoder is used for converting the level signal sent by the single chip microcomputer into a binary digital signal, the encoder adopts an HT82K629A keyboard encoding chip, and an optical coupler is connected between the HT82K629A keyboard encoding chip and the single chip microcomputer.

4. The computer card swiping and logout system for the electronic reading room as claimed in claim 3, wherein said serial port unit (5) comprises a USB interface and an RS232 serial port, said USB interface is connected with a HT82K629A keyboard coding chip, said RS232 serial port is connected with a single chip, and the RS232 serial port is used for the single chip to communicate with the computer (1).

5. The computer card swiping logout system for an electronic reading room as claimed in claim 2, wherein said radio frequency module (4) comprises an RC522 chip and an antenna, said antenna is used for sensing an IC card, pins RX, VMID, TX1 and TX2 of said RC522 chip are connected with the antenna, and pins SDA, D5, D6 and D7 of RC522 are connected with the IO port of the single chip microcomputer.