CN218938980U

CN218938980U - Coin card terminal

Info

Publication number: CN218938980U
Application number: CN202223528821.1U
Authority: CN
Inventors: 贺竹玉
Original assignee: Eastcompeace Technology Co Ltd
Current assignee: Eastcompeace Technology Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-28
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a coin counting card terminal, and relates to the technical field of card products. The coin card type terminal comprises an intelligent card chip, an MCU and a power management system; the intelligent card chip is connected with a radio frequency antenna; the MCU is electrically connected with the smart card chip through a communication bus, and an isolation element is connected in series on the communication bus; the power management system is respectively and electrically connected with the smart card chip and the MCU; the smart card chip communicates with the card reader through the radio frequency antenna. According to the coin card terminal, the radio frequency antenna is directly led out from the smart card chip, the radio frequency antenna drives the smart card chip to work normally by acquiring energy from the radio frequency field of the card reader, and the system can work normally even though the energy provided by the radio frequency field is limited because the power consumption of the smart card chip is extremely low, so that the system can work normally no matter the system is in a starting-up state or a shutdown state when the product carries out business transaction.

Description

Coin card terminal

Technical Field

The utility model relates to the technical field of card products, in particular to a coin card terminal.

Background

The existing active coin card type terminal products generally need to be started to electrify the whole system, then transaction work can be carried out, the use scene is single, and the terminal products are limited by the energy state of the system.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the coin card terminal which can complete the transaction when the system is in the starting-up and shutdown states.

The coin card type terminal according to the embodiment of the utility model comprises:

the intelligent card chip is connected with a radio frequency antenna;

the MCU is electrically connected with the intelligent card chip through a communication bus, and an isolation element is connected in series on the communication bus;

the power management system is respectively and electrically connected with the smart card chip and the MCU;

the smart card chip communicates with the card reader through the radio frequency antenna.

According to some embodiments of the utility model, the isolation element is a resistor.

According to some embodiments of the utility model, the resistance is 6.8kΩ to 20kΩ.

According to some embodiments of the utility model, the smart card chip communicates with the card reader via a radio frequency 14443 protocol.

The coin card terminal provided by the embodiment of the utility model has at least the following beneficial effects: when the system is in a shutdown state, the MCU and the smart card chip are connected in hardware through an isolation design, namely, the communication bus is connected in series with an isolation element, so that most of energy acquired by the smart card chip from a radio frequency field of the card reader is supplied to the smart card chip, the smart card chip can normally operate, and a shutdown transaction function is realized; if the isolation design is not adopted, the energy acquired by the intelligent card chip from the radio frequency field flows to peripheral circuits such as MCU and the like through a bus, and part of the energy is consumed, so that the system energy supply is insufficient, and the transaction work of the system fails.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a coin card terminal according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of a smart card chip according to an embodiment of the present utility model;

smart card chip 100, radio frequency antenna 110, MCU200, power management system 300, communication bus 400, card reader 500.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

As shown in fig. 1 and 2, the coin card type terminal according to the embodiment of the present utility model includes a smart card chip 100, an MCU200, and a power management system 300; the smart card chip 100 is connected with a radio frequency antenna 110; MCU200 is electrically connected with smart card chip 100 through communication bus 400, and isolation elements are connected in series on communication bus 400; the power management system 300 is electrically connected with the smart card chip 100 and the MCU200 respectively; wherein the smart card chip 100 communicates with the card reader 500 via the radio frequency antenna 110.

For the traditional card terminals, when the card terminal works, the whole system is electrified, so that data can be sent to the intelligent card chip through the MCU to complete the transaction process. For the card terminal, the transaction can not be normally carried out in the shutdown state, and the card terminal is inconvenient to use. For the coin card terminal of the embodiment of the utility model, the radio frequency antenna 110 is directly led out from the smart card chip 100, the radio frequency antenna 110 drives the smart card chip 100 to work normally by acquiring energy from the radio frequency field of the card reader 500, and the system can work normally due to the extremely low power consumption of the smart card chip 100 although the energy provided by the radio frequency field is limited, so that the system can work normally no matter the system is in a power-on or power-off state when the product performs business transaction. When the system is in a shutdown state, since the connection part of the MCU200 and the smart card chip 100 is in an isolation design in hardware, that is, the communication bus 400 is connected with an isolation element in series, most of the energy acquired by the smart card chip 100 from the radio frequency field of the card reader 500 is supplied to the smart card chip 100, and the smart card chip 100 can normally operate, so that a shutdown transaction function is realized; if the isolation mode is not adopted, the energy acquired by the smart card chip 100 from the radio frequency field flows to peripheral circuits such as the MCU200 and the like through a bus, so that part of energy is consumed, the energy supply of the system is insufficient, and the transaction work of the system fails. When the system is in a starting-up state, the power management system 300 supplies power to the smart card chip 100 and the MCU200, and business transaction data can be sent to the smart card chip 100 through the MCU200 for processing, so that the whole process is completed; the smart card chip 100 may also interact with the contactless reader 500 directly by radio frequency, and during this process, the MCU200 may be programmed to ensure that no power and data interaction is performed on the smart card chip 100.

As shown in fig. 1, in some embodiments of the present utility model, the isolation element is a resistor R1, and the isolation of the smart card chip 100 from the MCU200 is accomplished by connecting the resistor R1 in series on the communication bus 400. It should be noted that, the isolation element may also be an isolation chip, but the cost of the isolation chip is relatively high, and the isolation effect is achieved with the lowest cost by adopting the resistor R1.

In some embodiments of the present utility model, the value of the resistor R1 is between 6.8kΩ and 20kΩ, and experiments show that if the resistance of the resistor R1 is too small, the current flowing through other parts of the smart card chip 100 is large, and the isolation effect is poor; if the resistance value of the resistor R1 is too large, signal distortion is caused to the signal of the communication line, resulting in communication failure. The utility model adopts the mode of connecting the resistor R1 with the resistance value of 6.8KΩ to 20KΩ in series in the communication bus 400, greatly reduces the energy sent by the smart card chip 100 to other peripheral circuits such as the MCU200 which is not started, and has little influence on communication signals.

In some embodiments of the utility model, as shown in FIG. 1, the smart card chip 100 communicates with the reader 500 via a radio frequency 14443 protocol. During a transaction, the smart card chip 100 may acquire energy from the rf field of the contactless reader 500 via the 14443 protocol, thereby completing the data interaction.

According to the coin card terminal provided by the embodiment of the utility model, the isolation of the intelligent card chip 100 and the MCU200 is realized by connecting the resistor R1 of 6.8KΩ to 20KΩ in series on the communication bus 400, so that the card terminal can normally conduct transactions when the system is in a starting-up state and a shutdown state, and the product is more convenient to use.

In the description of the present specification, a description referring to the terms "one embodiment," "further embodiment," "some specific embodiments," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A coin card type terminal, comprising:

the intelligent card chip is connected with a radio frequency antenna;

2. The card-like terminal of claim 1, wherein the isolation element is a resistor.

3. The card-like terminal according to claim 2, wherein the resistance value of the resistor is 6.8kΩ to 20kΩ.

4. The card-like terminal of claim 1, wherein the smart card chip communicates with the card reader via a radio frequency 14443 protocol.