Active card terminal and automatic power-on method thereof

Abstract

The present invention discloses an active card terminal and an automatic power-on method thereof, and relates to the technical field of card products. The active card terminal includes a smart card chip, an MCU, a power supply module, a power switch module, a rectifier module, and a switch module; the MCU is electrically connected to the smart card chip; the input end of the power switch module is electrically connected to the output end of the power supply module, the output end of the power switch module is electrically connected to the power end of the smart card chip and the power end of the MCU respectively, the enable end of the power switch module is electrically connected to the first control end of the MCU, the output end of the rectifier module, and the output end of the switch module respectively; the controlled end of the switch module is electrically connected to the second control end of the MCU. According to the active card terminal of the present invention, when the system is in a shutdown state, it can realize automatic power-on when swiping a card to conduct a transaction, thereby facilitating the user's operation, without the need for the user to manually power on, and facilitating the user to check the transaction status.

Description

Technical Field

[0001] The present invention relates to the technical field of card products, in particular to an active card terminal and an automatic power-on method thereof. Background Art

[0002] Existing active card terminal equipment needs to be powered on before it can be used when the system is powered off, or after completing a transaction with a card reader, the system needs to be powered on to view the transaction status, which brings inconvenience to users. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an active card terminal and an automatic power-on method thereof, which can automatically power on when conducting a transaction.

[0004] On the one hand, an active card terminal according to an embodiment of the present invention includes:

[0005] A smart card chip is connected to a radio frequency antenna, and the smart card chip can communicate with a card reader through the radio frequency antenna to obtain radio frequency field energy;

[0006] MCU, electrically connected to the smart card chip;

[0007] Power supply module;

[0008] A power switch module, wherein the input end of the power switch module is electrically connected to the output end of the power supply module, the output end of the power switch module is electrically connected to the power end of the smart card chip and the power end of the MCU respectively, and the enable end of the power switch module is electrically connected to the first control end of the MCU;

[0009] A rectifier module, used for rectifying the radio frequency field energy and sending it to the enable end of the power switch module;

[0010] A switch module, wherein a controlled end of the switch module is electrically connected to a second control end of the MCU, and an output end of the switch module is electrically connected to an enable end of the power switch module.

[0011] According to some embodiments of the present invention, the first control end of the MCU is electrically connected to the enable end of the power switch module through a first diode, the output end of the rectifier module is electrically connected to the enable end of the power switch module through a second diode, and the output end of the switch module is electrically connected to the enable end of the power switch module through a third diode.

[0012] According to some embodiments of the present invention, the power supply module includes a battery and a battery management chip, the output end of the battery is electrically connected to the input end of the battery management chip, and the output end of the battery management chip is electrically connected to the input end of the power switch module.

[0013] According to some embodiments of the present invention, the power on / off module includes:

[0014] A transistor, wherein the base of the transistor is electrically connected to the second control terminal of the MCU via a first resistor, and the emitter of the transistor is grounded;

[0015] A switch chip, wherein a control pin of the switch chip is electrically connected to the collector of the transistor, and an output end of the switch chip is electrically connected to an enable end of the power switch module.

[0016] According to some embodiments of the present invention, the power on / off module further includes a control button, a first end of the control button is electrically connected to a control pin of the power on / off chip, and a second end of the control button is grounded.

[0017] According to some embodiments of the present invention, a display module is further included, and the display module is electrically connected to the MCU.

[0018] According to some embodiments of the present invention, a key module is further included, and the key module is electrically connected to the MCU.

[0019] According to some embodiments of the present invention, the smart card chip communicates with the card reader via 14443 protocol.

[0020] On the other hand, the automatic power-on method of the active card terminal according to the embodiment of the present invention comprises the following steps:

[0021] The smart card chip communicates with the card reader through the RF antenna to obtain RF field energy;

[0022] The rectifier module rectifies the radio frequency field energy and sends the rectified energy to the enable terminal of the power switch module to turn on the power switch module;

[0023] The power supply module provides working power to the MCU and the smart card chip through the power switch module;

[0024] The MCU sends a high-level first control signal to the enable terminal of the power switch module to keep the power switch module in a conducting state;

[0025] The MCU sends a high-level second control signal to the controlled end of the power-on / off module, so that the power-on / off module performs a power-on action.

[0026] According to some embodiments of the present invention, the following steps are also included:

[0027] After the power-on / off module completes the power-on, the MCU pulls the first control signal and the second control signal low.

[0028] The active card terminal and the automatic power-on method thereof according to the embodiment of the present invention have at least the following beneficial effects: when the system is in the shutdown state and is conducting a transaction with the card reader, the smart card chip can obtain the radio frequency field energy of the card reader through the radio frequency antenna, and the radio frequency field energy is rectified by the rectifier module and sent to the enable end of the power switch module, so that the enable end of the power switch module is in a high level state and the power switch module is turned on; at this time, the power supply module can provide working power to the smart card chip and the MCU through the power switch module, so that the smart card chip and the MCU work normally; the MCU sends a high-level first control signal to the enable end of the power switch module through the first control end, so that the power switch module remains in the on state, realizes power supply self-locking, maintains power supply, and prevents the entire system from losing power when the card is removed from the card reader; at the same time, the MCU sends a high-level second control signal to the controlled end of the power on / off module through the second control end, simulating the operation of pressing the power on button, so that the power on / off module performs the power on action, so that the system can realize automatic power on by swiping the card in the shutdown state, which is convenient for the user to operate and check the transaction status.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 It is a structural schematic diagram of an active card terminal according to an embodiment of the present invention;

[0032] Figure 2 A flowchart of the steps of the automatic power-on method of the active card terminal according to the embodiment of the present invention;

[0033] Reference numerals:

[0034] Smart card chip 100 , radio frequency antenna 110 , card reader 200 , MCU 300 , power supply module 400 , power switch module 500 , rectifier module 600 , switch module 700 , display module 800 , key module 900 . DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0036] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] On the one hand, if Figure 1 As shown, the active card terminal according to the embodiment of the present invention includes a smart card chip 100, an MCU 300, a power supply module 400, a power switch module 500, a rectifier module 600 and a switch module 700; the smart card chip 100 is connected to a radio frequency antenna 110, and the smart card chip 100 can communicate with the card reader 200 through the radio frequency antenna 110, so as to obtain radio frequency field energy; the MCU 300 is electrically connected to the smart card chip 100; the input end of the power switch module 500 is connected to the output end of the power supply module 4 ... The power switch module 500 is electrically connected to the power supply terminal of the smart card chip 100 and the power supply terminal of the MCU 300, respectively; the enable terminal of the power switch module 500 is electrically connected to the first control terminal of the MCU 300, the output terminal of the rectifier module 600 and the output terminal of the switch module 700, respectively; the rectifier module 600 is used to rectify the radio frequency field energy and send it to the enable terminal of the power switch module 500; the controlled terminal of the switch module 700 is electrically connected to the second control terminal of the MCU 300.

[0039] Specifically, the smart card chip 100 communicates with the card reader 200 via the 14443 protocol, so that the active card terminal can obtain energy when interacting with the card reader 200, and send the energy to the enable end of the power switch module 500 through the rectifier module 600, so that the power switch module 500 is in a conducting state. Figure 1As shown, the power switch module 500 includes a chip U4, and the enable terminal EN of the chip U4 is controlled by three signals, which are respectively the output terminal of the rectifier module 600, the first control terminal of the MCU300, and the output terminal of the switch module 700. When one of the signals is at a high level, the power switch module 500 is in a conducting state; when the three signals are all at a low level, the power switch module 500 is in a disconnected state. The input terminal VIN of the chip U4 is electrically connected to the output terminal of the power supply module 400, and the output terminal VOUT of the chip U4 is electrically connected to the power supply terminal of the smart card chip 100 and the power supply terminal of the MCU300 respectively. When the power switch module 500 is in a conducting state, the power supply module 400 can provide working power to the smart card chip 100 and the MCU300 through the power switch module 500, so that the smart card chip 100 and the MCU300 work normally.

[0040] According to the active card terminal of the embodiment of the present invention, when the smart card chip 100 is in the shutdown state and the smart card chip 100 is conducting a transaction with the card reader 200, the smart card chip 100 can obtain the radio frequency field energy of the card reader 200 through the radio frequency antenna 110, and the radio frequency field energy is rectified by the rectifier module 600 and sent to the enable end of the power switch module 500, so that the enable end of the power switch module 500 is in a high level state, and the power switch module 500 is turned on. At this time, the power supply module 400 can provide working power to the smart card chip 100 and the MCU300 through the power switch module 500, so that the smart card chip 100 and the MCU300 work normally. After powering on, the MCU300 sends a high-level first control signal POWER_CTRL1 to the enable end of the power switch module 500 through the first control end, so that the power switch module 500 remains in the on state, realizes power supply self-locking, maintains power supply, and prevents the entire system from losing power when the card moves away from the card reader 200. At the same time, MCU300 sends a high-level second control signal POWER_CTRL2 to the controlled end of the power-on / off module 700 through the second control end, simulating the operation of pressing the power-on button, so that the power-on / off module 700 performs the power-on action, and the power-on is completed after a delay of about 5 seconds. After the power-on is completed, MCU300 pulls down the POWER_CTRL1 signal to release the self-locking state, and pulls down the POWER_CTRL2 signal to release the state of simulating pressing the power-on button, so that the system can automatically start up by swiping a card in the power-off state.

[0041] The active card terminal according to the embodiment of the present invention can automatically start up when a card is swiped for a transaction when the system is in a shutdown state, thereby facilitating user operation without the need for the user to manually start up the terminal and making it easier for the user to check the transaction status.

[0042] like Figure 1As shown, in some embodiments of the present invention, the first control terminal of the MCU 300 is electrically connected to the enable terminal of the power switch module 500 through the first diode D1, the output terminal of the rectifier module 600 is electrically connected to the enable terminal of the power switch module 500 through the second diode D2, and the output terminal of the switch module 700 is electrically connected to the enable terminal of the power switch module 500 through the third diode D3. The three-way signal is isolated by the first diode D1, the second diode D2 and the third diode D3 to avoid mutual interference.

[0043] like Figure 1 As shown, in some embodiments of the present invention, the power supply module includes a battery and a battery management chip, the output end of the battery is electrically connected to the input end of the battery management chip, and the output end of the battery management chip is electrically connected to the input end of the power switch module 500. The battery is used to provide power for the entire system, and the battery management chip is used to convert, distribute, detect and otherwise manage electrical energy.

[0044] like Figure 1 As shown, in some embodiments of the present invention, the switch module 700 includes a transistor Q4 and a switch chip U5, the base of the transistor Q4 is electrically connected to the second control terminal of the MCU300 through the first resistor R18, the emitter of the transistor Q4 is grounded, a resistor R19 is provided between the base and the emitter of the transistor Q4, the collector of the transistor Q4 is electrically connected to the control pin KEY of the switch chip U5, and the output terminal OUT of the switch chip U5 is electrically connected to the enable terminal of the power switch module 500. When the system is in the shutdown state, if the second control terminal of the MCU300 outputs a high-level POWER_CTRL2 signal, the transistor Q4 is turned on, simulating the action of pressing the switch button, so that the switch chip U5 performs the power-on action; when the system is in the power-on state, if the second control terminal of the MCU300 outputs a high-level POWER_CTRL2 signal, simulating the action of pressing the switch button, the switch chip U5 performs the power-off action.

[0045] like Figure 1 As shown, in some embodiments of the present invention, the power on / off module 700 further includes a control button SW1, a first end of the control button SW1 is electrically connected to the control pin KEY of the power on / off chip U5, and a second end of the control button SW1 is grounded. When the system is in the power on state, long pressing the control button SW1 can turn off the system; when the system is in the power off state, long pressing the control button SW1 can turn on the system. Among them, controlling the power on / off of the system through the control button SW1 is a manual operation, while controlling the power on / off of the system through the POWER_CTRL2 signal of the MCU300 is an automatic operation of the system.

[0046] like Figure 1As shown, in some embodiments of the present invention, the active card terminal further includes a display module 800, which is electrically connected to the MCU 300. The display module 800 may include a display screen arranged on a card, for displaying the transaction status, transaction records, etc. of the active card terminal.

[0047] like Figure 1 As shown, in some embodiments of the present invention, the active card terminal further includes a key module 900, which is electrically connected to the MCU 300. The key module 900 may include a plurality of function keys arranged on the card, for controlling the working state of the active card terminal.

[0048] According to the active card terminal of the embodiment of the present invention, in the system shutdown state, the smart card chip 100 conducts business transactions with the card reader 200 through 14443 to obtain energy. After the energy is rectified by the rectifier module 600, it is sent to the enable terminal EN of the chip U4 of the power switch module 500, so that EN changes from low to high, and the chip U4 will be in the on state. At this time, the power supply module 400 powers on the smart card chip 100 and the MCU300 through the power switch module 500. After powering on, the MCU300 sets POWER_CTRL1 to a high level, so that the enable terminal EN of the chip U4 maintains a high level state, realizes power supply self-locking (to prevent the entire system from losing power when the card moves away from the card reader 200), and maintains the power supply of the system. At the same time, the MCU300 sets POWER_CTRL2 to a high level to simulate the state of pressing the control button SW1 to start up. After a delay of about 5 seconds, U5 is successfully turned on. At this time, MCU300 sets POWER_CTRL1 to low to release the self-locking state, and sets POWER_CTRL2 to low to simulate the state of releasing the control button SW1, so that the system can automatically start up when the card is swiped in the off state.

[0049] On the other hand, based on the above-mentioned active card terminal, the embodiment of the present invention also proposes an automatic power-on method for the active card terminal, such as Figure 2 As shown, the method comprises the following steps:

[0050] Step S100: the smart card chip 100 communicates with the card reader 200 via the radio frequency antenna 110 to obtain radio frequency field energy;

[0051] Step S200: the rectifier module 600 rectifies the radio frequency field energy and sends it to the enable terminal of the power switch module 500 to turn on the power switch module 500;

[0052] Step S300: the power supply module 400 provides working power to the MCU 300 and the smart card chip 100 through the power switch module 500;

[0053] Step S400: the MCU 300 sends a high-level first control signal POWER_CTRL1 to the enable terminal of the power switch module 500 to keep the power switch module 500 in the on state;

[0054] Step S500: the MCU 300 sends a high-level second control signal POWER_CTRL2 to the controlled end of the power on / off module 700, so that the power on / off module 700 performs a power on action.

[0055] Specifically, when the system is in the shutdown state, the smart card chip 100 conducts business transactions with the card reader 200 through the 14443 protocol, thereby obtaining radio frequency field energy; after the radio frequency field energy is rectified by the rectifier module 600, it is sent to the enable terminal EN of the chip U4 of the power switch module 500, so that EN changes from low to high, and the chip U4 will be in the on state. At this time, the power supply module 400 powers on the smart card chip 100 and the MCU300 through the power switch module 500. After powering on, the MCU300 sets POWER_CTRL1 to a high level, so that the enable terminal EN of the chip U4 maintains a high level state, realizes power supply self-locking (prevents the entire system from powering off when the card is removed from the card reader 200), and maintains system power supply. At the same time, the MCU300 sets POWER_CTRL2 to a high level, simulating the state of pressing the control button SW1 to start up; after a delay of about 5 seconds, the switch chip U5 is successfully turned on.

[0056] In some embodiments of the present invention, the automatic power-on method of an active card terminal further includes the following steps:

[0057] After the power-on / off module 700 completes the power-on process, the MCU 300 pulls the first control signal POWER_CTRL1 and the second control signal POWER_CTRL2 low.

[0058] By setting POWER_CTRL1 low, the self-locking state is released; and by setting POWER_CTRL2 low, the state of releasing the control button SW1 is simulated, so that the system can automatically start up when the card is swiped in the off state.

[0059] According to the automatic power-on method of the active card terminal according to the embodiment of the present invention, when the system is in the shutdown state, it can be automatically powered on when a card is swiped for transaction, thereby facilitating user operation without the need for the user to manually power on the terminal, making it easier for the user to check the transaction status.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "further embodiments", "some specific embodiments" or "some examples" etc. means that the specific features, structures or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An active card terminal, characterized in that: include: A smart card chip is connected to a radio frequency antenna, and the smart card chip can communicate with a card reader through the radio frequency antenna to obtain radio frequency field energy; MCU, electrically connected to the smart card chip; Power supply module; A power switch module, wherein the input end of the power switch module is electrically connected to the output end of the power supply module, the output end of the power switch module is electrically connected to the power end of the smart card chip and the power end of the MCU respectively, and the enable end of the power switch module is electrically connected to the first control end of the MCU; A rectifier module, used for rectifying the radio frequency field energy and sending it to the enable end of the power switch module; A switch module, wherein a controlled end of the switch module is electrically connected to a second control end of the MCU, and an output end of the switch module is electrically connected to an enable end of the power switch module; Among them, when the power switch module is turned on, the power supply module provides working power to the MCU and the smart card chip through the power switch module; the MCU sends a high-level first control signal to the enable end of the power switch module to keep the power switch module in a turned-on state; the MCU sends a high-level second control signal to the controlled end of the power switch module to enable the power switch module to perform a power-on action.

2. The active card terminal according to claim 1, characterized in that: The first control end of the MCU is electrically connected to the enable end of the power switch module through a first diode, the output end of the rectifier module is electrically connected to the enable end of the power switch module through a second diode, and the output end of the switch module is electrically connected to the enable end of the power switch module through a third diode.

3. The active card terminal according to claim 1, characterized in that: The power supply module includes a battery and a battery management chip. The output end of the battery is electrically connected to the input end of the battery management chip. The output end of the battery management chip is electrically connected to the input end of the power switch module.

4. The active card terminal according to claim 1, characterized in that: The switch module comprises: A transistor, wherein the base of the transistor is electrically connected to the second control terminal of the MCU via a first resistor, and the emitter of the transistor is grounded; A switch chip, wherein a control pin of the switch chip is electrically connected to the collector of the transistor, and an output end of the switch chip is electrically connected to an enable end of the power switch module.

5. The active card terminal according to claim 4, characterized in that: The power on / off module further includes a control button, a first end of the control button is electrically connected to a control pin of the power on / off chip, and a second end of the control button is grounded.

6. The active card terminal according to claim 1, characterized in that: It also includes a display module, which is electrically connected to the MCU.

7. The active card terminal according to claim 1, characterized in that: It also includes a key module, which is electrically connected to the MCU.

8. The active card terminal according to claim 1, characterized in that: The smart card chip communicates with the card reader via the 14443 protocol.

9. A method for automatically starting an active card terminal, characterized in that: The following steps are involved: The smart card chip communicates with the card reader through the RF antenna to obtain RF field energy; The rectifier module rectifies the radio frequency field energy and sends the rectified energy to the enable terminal of the power switch module to turn on the power switch module; The power supply module provides working power to the MCU and the smart card chip through the power switch module; The MCU sends a high-level first control signal to the enable terminal of the power switch module to keep the power switch module in a conducting state; The MCU sends a high-level second control signal to the controlled end of the power-on / off module, so that the power-on / off module performs a power-on action.

10. The automatic power-on method of an active card terminal according to claim 9, characterized in that: The following steps are also included: After the power-on / off module completes the power-on, the MCU pulls the first control signal and the second control signal low.

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