CN207817714U - A plug-in card reader - Google Patents

Abstract

The utility model provides a plug card reader, including host system, card reading interface, power data interface to and communication module, power module, clock module, storage module, phase inverter, operational amplifier, L ED drive circuit, bee calling organ drive circuit who is connected with the host system electricity, communication module, clock module, storage module, phase inverter, operational amplifier, L ED drive circuit and bee calling organ drive circuit all are connected with the power module electricity, phase inverter and operational amplifier all are connected with the card reading interface electricity, communication module and power module all are connected with the power data interface electricity.

Description

A plug-in card reader

technical field

The utility model relates to the field of card readers, in particular to a plug-in card reader.

Background technique

At present, card readers can be divided into two types according to their uses, one is a card reader for reading memory card information, and the other is a card reader for swiping or punching cards. In the prior art, the latter often lacks the upper layer The management system has a single function, cannot be used online, has low versatility, and its communication distance is short, which greatly limits its scope of application.

Utility model content

In order to solve the above problems, the utility model provides a plug-in card reader, which can be used independently or on-line, can realize long-distance communication, and can effectively record the number of punching cards. It not only has versatility and convenience, but also avoids duplication. The phenomenon of punching cards.

The technical scheme adopted by the utility model is: provide a plug-in card reader, including a main control module, and a communication module electrically connected with the main control module, a power supply module, a clock module, a storage module, an inverter, an operational amplifier, LED drive circuit, buzzer drive circuit, the communication module, clock module, storage module, inverter, operational amplifier, LED drive circuit and buzzer drive circuit are all electrically connected to the power supply module;

The input end of the inverter is electrically connected to the main control module, and the output end of the inverter is electrically connected to a card reading interface;

The input end of the operational amplifier is electrically connected to the card reader interface, and the output end of the operational amplifier is electrically connected to the main control module;

One end of the communication module is electrically connected to the main control module, and the other end of the communication module is electrically connected to a power data interface;

The power data interface is electrically connected to the power module.

Further, a triode circuit is connected in series between the inverter and the card reading interface.

Further, the communication module adopts CAN bus communication mode.

Further, the main control module is also electrically connected with a JTAG interface.

Further, the main control module includes a single-chip microcomputer modeled as STM32F103C8T6.

Further, there are four LED driving circuits, and each LED driving circuit has an LED lamp.

Compared with the prior art, the utility model can be used independently as a station card reader after being powered on, and can also be used as a reading head after establishing a data connection with the electronic device, and both the power on and the connection with the electronic device can be directly passed The power data interface connection does not need to exchange other interfaces, so that it not only has versatility, but also improves its convenience; the utility model can realize two different signal conversions when inserting and removing the card, and can effectively record the number of times of punching the card, avoiding the occurrence of The phenomenon of repeated check-in; this usage phenomenon uses CAN bus for communication, which can realize long-distance communication and enhance its scope of use.

Description of drawings

Fig. 1 is the practical circuit schematic diagram;

Fig. 2 is a schematic circuit diagram of the inverter, the card reader interface and the operational amplifier in Fig. 1 .

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1 of the present utility model, as shown in Figure 1 and Figure 2, a plug-in card reader, including a main control module, and a communication module 2 electrically connected to the main control module 1, a power supply module 3, a clock module 4, Storage module 5, inverter 6, operational amplifier 7, LED driving circuit 8, buzzer driving circuit 9, the communication module 2, clock module 4, storage module 5, inverter 6, operational amplifier 7, LED driving Both the circuit 8 and the buzzer driving circuit 9 are electrically connected to the power module 3 .

The input end of the inverter 6 is electrically connected to the main control module 1, the output end of the inverter 6 is electrically connected to the card reading interface 10, and a triode is connected in series between the inverter 6 and the card reading interface 10 Circuit; the input end of the operational amplifier 7 is electrically connected to the card reading interface 10 , and the output end of the operational amplifier 7 is electrically connected to the main control module 1 .

One end of the communication module 2 is electrically connected to the main control module 1 , and the other end of the communication module 2 is electrically connected to a power data interface; the power data interface is electrically connected to the power module 3 .

Described communication module 2 comprises the chip that model is SN65HVD230DR, and adopts the CAN bus communication mode; Described main control module 1 comprises the single-chip microcomputer that model is STM32F103C8T6, and is electrically connected with JTAG interface; Described inverter 6 is that model is 74HC04 Six-channel inverter; the operational amplifier 7 is a four-input operational amplifier model TL084.

There are 4 LED driving circuits 8, and each LED driving circuit 8 has an LED lamp, and the four LED lamps are respectively power-on prompting lamps, operation prompting lamps, card reading success lamps and card reading failure lamps, which play a prompting role.

The utility model has a built-in storage module 5 and a main control module 1, so that the utility model can store card data when used alone, so as to upload data and analyze and process the data when used online; the inverter 6 and the triode circuit can be The utility model realizes two different signal conversions when inserting and pulling out the card, avoiding repeated card swiping; the operational amplifier 7 can amplify the signal when the card is inserted or pulled out, and reduces the transmission probability of poor contact; the buzzer The driving circuit 9 can make the utility model possess the function of sound prompting.

The above-mentioned embodiments are preferred implementations of the utility model, and are not limitations of the utility model. Any obvious replacements are within the protection scope of the utility model without departing from the concept of the utility model.

Claims (6)

1. A plug-in card reader, characterized in that: comprising a main control module (1), and a communication module (2), a power supply module (3), and a clock module (4) electrically connected to the main control module (1) , storage module (5), inverter (6), operational amplifier (7), LED drive circuit (8), buzzer drive circuit (9), the communication module (2), clock module (4), The storage module (5), the inverter (6), the operational amplifier (7), the LED driving circuit (8) and the buzzer driving circuit (9) are all electrically connected to the power module (3); The input end of the inverter (6) is electrically connected to the main control module (1), and the output end of the inverter (6) is electrically connected to a card reading interface (10); The input end of the operational amplifier (7) is electrically connected to the card reader interface (10), and the output end of the operational amplifier (7) is electrically connected to the main control module (1); One end of the communication module (2) is electrically connected to the main control module (1), and the other end of the communication module (2) is electrically connected to a power data interface; The power data interface is electrically connected to the power module (3). 2. The plug-in card reader according to claim 1, characterized in that: a triode circuit is connected in series between the inverter (6) and the card reading interface (10). 3. The plug-in card reader according to claim 2, characterized in that: the communication module (2) adopts a CAN bus communication mode. 4. The plug-in card reader according to claim 3, characterized in that: the main control module (1) is also electrically connected with a JTAG interface. 5. The plug-in card reader according to claim 4, characterized in that: the main control module (1) includes a single-chip microcomputer modeled as STM32F103C8T6. 6. The plug-in card reader according to any one of claims 1-5, characterized in that there are four LED drive circuits (8), and each LED drive circuit (8) has an LED light.