Smart card

Abstract

The utility model provides an intelligent card which comprises a control module, a radio frequency assembly and a power supply, the output end of the radio frequency assembly is connected with the control module, and the power supply end of the power supply is connected with the power supply input end of the control module; the intelligent card is configured to communicate with the electronic equipment through the radio frequency component; and the control module is configured to send a communication closing signal to the radio frequency component under the condition that the intelligent card moves in a direction far away from the electronic equipment and meets a preset condition, so that the radio frequency component disconnects radio frequency connection with the electronic equipment. When the intelligent card is connected with the electronic equipment, the communication closing signal is sent, so that the radio frequency assembly of the intelligent card is disconnected from the electronic equipment, the electronic equipment stops waiting for feedback signals of the intelligent card and searching the card when the intelligent card is away from the electronic equipment, the probability that the electronic equipment is stuck can be remarkably reduced, and the service life of the electronic equipment is prolonged. Therefore, the communication stability of the smart card is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-powered smart cards, and in particular to a smart card. Background Art

[0002] A smart card is generally referred to as a plastic card embedded with a microchip, which is widely used in fields such as access control, shopping, entertainment, and the Internet of Things. A smart card usually contains a microelectronic chip for data interaction with an external electronic device when the smart card approaches the external electronic device. Currently, in the prior art, a smart card can communicate with an external electronic device through a coil inside the smart card. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a smart card, which can significantly reduce the probability of the electronic device communicating with the smart card getting stuck, thereby improving the communication stability of the smart card.

[0004] An embodiment of the utility model provides a smart card, which includes a control module, a radio frequency component, and a power supply. The output end of the radio frequency component is connected to the control module, and the power supply end of the power supply is connected to the power supply input end of the control module. The smart card is configured to communicate with an electronic device through the radio frequency component. The control module is configured to: when the smart card moves away from the electronic device and meets a preset condition, send a communication shutdown signal to the radio frequency component to disconnect the radio frequency connection between the radio frequency component and the electronic device.

[0005] In one embodiment, the smart card further includes: a monitoring module, the input end of the monitoring module is connected to the output end of the radio frequency component, and the output end of the monitoring module is connected to the control module. The monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send a first monitoring signal to the control module when the parameter meets a preset parameter condition. The control module is configured to send a communication shutdown signal to the radio frequency component according to the first monitoring signal.

[0006] In one embodiment, the control module includes a security element. The security element includes a power supply input terminal, a signal input terminal, and a power control terminal. The output terminal of the RF component and the power supply terminal of the power supply are both electrically connected to the power supply input terminal of the security element. The output terminal of the RF component is electrically connected to the signal input terminal of the security element through a monitoring module. The power control terminal of the security element is electrically connected to the power supply. Alternatively, the control module includes a first control element and a second control element. The first control element includes a power supply input terminal, a signal input terminal, a power supply control terminal, and a first control terminal. The second control element includes a power supply input terminal, a first signal terminal, and a second signal terminal. The output terminal of the RF component and the power supply control terminal of the first control element are respectively electrically connected to the power supply input terminal of the second control element. The output terminal of the RF component is electrically connected to the signal input terminal of the first control element through a monitoring module. The power supply input terminal of the first control element is electrically connected to the power supply. The first control terminal of the first control element is electrically connected to the first signal terminal of the second control element. The second signal terminal of the second control element is electrically connected to the RF component.

[0007] In one embodiment, when the control module includes a security element, the power supply is configured to: supply power to the security element when the field strength between the smart card and the electronic device is less than a preset field strength; stop supplying power to the security element and the RF component supply power to the security element when the field strength between the smart card and the electronic device is not less than the preset field strength. When the control module includes a first control element and a second control element, the power supply is configured to: supply power to the first control element and the second control element when the field strength between the smart card and the electronic device is less than a preset field strength; supply power to the first control element and stop supplying power to the second control element when the field strength between the smart card and the electronic device is not less than the preset field strength, and the RF component supplies power to the second control element.

[0008] In one embodiment, when the control module includes a security element, the monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send a first monitoring signal to the security element when the parameter meets a preset parameter condition. The security element is configured to send a communication shutdown signal to the RF component according to the first monitoring signal. When the control module includes a first control element and a second control element, the monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send a first monitoring signal to the first control element when the parameter meets a preset parameter condition. The first control element is configured to send a first departure signal to the second control element when receiving the first monitoring signal. The second control element is configured to send a communication shutdown signal to the RF component when receiving the first departure signal.

[0009] In one embodiment, when the control module includes a first control element and a second control element, the monitoring module is configured to send a second monitoring signal to the first control element when the smart card approaches the electronic device and meets a preset condition; the first control element is configured to close the data transmission channel with the second control element when receiving the second monitoring signal; the monitoring module is further configured to monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send a first monitoring signal to the first control element when the parameter meets a preset parameter condition; the first control element is configured to open the data transmission channel with the second control element when receiving the first monitoring signal.

[0010] In one embodiment, the smart card further includes a power supply and voltage stabilization circuit, and the input end of the power supply and voltage stabilization circuit is electrically connected to the output end of the radio frequency component; when the control module includes a security element, the output end of the power supply and voltage stabilization circuit is electrically connected to the power supply input end of the security element; when the control module includes a first control element and a second control element, the output end of the power supply and voltage stabilization circuit is electrically connected to the power supply input end of the second control element.

[0011] In one embodiment, when the control module includes a first control element and a second control element, the smart card further includes a first diode, the positive electrode of the first diode is electrically connected to the output end of the power supply and voltage stabilization circuit, and the negative electrode of the first diode is electrically connected to the power supply input end of the second control element.

[0012] In one embodiment, when the control module includes a first control element and a second control element, the smart card further includes a second diode, the positive electrode of the second diode is electrically connected to the power supply control end of the first control element, and the negative electrode of the second diode is electrically connected to the power supply input end of the second control element.

[0013] In one embodiment, when the control module includes a security element, the smart card further includes a power supply voltage stabilization circuit, and the power supply voltage stabilization circuit includes an input end, an output end and an enable end; the input end of the power supply voltage stabilization circuit is electrically connected to the output end of the power supply, the output end of the power supply voltage stabilization circuit is electrically connected to the power supply input end of the security element, and the power supply control end of the security element is electrically connected to the enable end of the power supply voltage stabilization circuit; the security element is configured to: send an enable signal to the power supply voltage stabilization circuit through the enable end of the power supply voltage stabilization circuit when the smart card approaches the electronic device and meets a preset condition; the power supply voltage stabilization circuit is configured to switch to a non-conducting state when receiving the enable signal to stop the power supply from supplying power to the security element; when the control module includes a first control element and a second control element, the power supply input end of the first control element is electrically connected to the power supply through a switch.

[0014] The embodiments of the present utility model bring the following beneficial effects:

[0015] An intelligent card provided by an embodiment of the present utility model includes: a control module, a radio frequency component, and a power supply. The output end of the radio frequency component is connected to the control module, and the power supply end of the power supply is connected to the power supply input end of the control module; the intelligent card is configured to communicate with an electronic device through the radio frequency component; the control module is configured to: when the intelligent card moves away from the electronic device and meets a preset condition, send a communication shutdown signal to the radio frequency component so that the radio frequency component disconnects the radio frequency connection with the electronic device.

[0016] In this way, by sending a communication shutdown signal when the intelligent card is away from the electronic device, the radio frequency component of the intelligent card is disconnected from the radio frequency connection with the electronic device, so that the electronic device stops waiting for the feedback signal of the intelligent card and searching for the card when the intelligent card is away, which can significantly reduce the probability of the electronic device communicating with the intelligent card getting stuck, thereby improving the stability of the intelligent card communication.

[0017] Other features and advantages of the present utility model will be described in the following description, and some of them will be obvious from the description, or understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description, claims, and drawings.

[0018] To make the above objectives, features, and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically given, and detailed descriptions are made in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of an intelligent card provided by an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of another intelligent card provided by an embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of another intelligent card provided by an embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of another intelligent card provided by an embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of another smart card provided by an embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of another smart card provided by an embodiment of the present utility model;

[0026] Figure 7 Schematic diagram of another smart card provided by an embodiment of the present utility model. Specific implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] The inventors of the present application noticed in the research that the smart card can communicate with the electronic device when it is close to the electronic device. However, in this solution, it is possible that when the smart card leaves the electromagnetic field of the electronic device, the electronic device can still recognize the presence of the smart card and send information to the smart card for contactless communication. However, since the distance between the smart card and the electronic device is relatively far and the field strength is not sufficient for contactless communication, the electronic device is still waiting and detecting the feedback information of the smart card and may periodically send inquiry information, etc., resulting in the phenomenon that the electronic device freezes. Based on this, the smart card provided by the embodiment of the present utility model can significantly reduce the probability of the electronic device communicating with the smart card from freezing, thereby improving the stability of smart card communication.

[0029] Please refer to Figure 1 , Figure 1 Schematic diagram of a smart card provided by an embodiment of the present disclosure. As Figure 1 shown, the present utility model provides a smart card 100. The smart card 100 includes a control module 110, a radio frequency component 120, and a power supply 130. The output end of the radio frequency component 120 is connected to the control module 110, and the power supply end of the power supply 130 is connected to the power supply input end of the control module 110.

[0030] The smart card 100 is configured to communicate with the electronic device through the radio frequency component 120. The control module 110 is configured to: when the smart card 100 moves away from the electronic device and meets a preset condition, send a communication shutdown signal to the radio frequency component 120 to disconnect the radio frequency connection between the radio frequency component 120 and the electronic device.

[0031] Among them, the preset condition may refer to the smart card 100 being in the presence stage, and the presence stage may be a stage where the wireless signal strength between the smart card 100 and the electronic device is greater than or equal to the first preset signal strength. It can be understood that the control module 110 is used to monitor the wireless signal strength between the smart card 100 and the electronic device, the radio frequency component 120 is used to control the disconnection state of the connection between the smart card 100 and the electronic device, and the power supply 130 is used to supply power to the smart card 100. When the user needs to use the smart card, they will take the smart card close to the electronic device. When the smart card is in contact with or non-contact with the electronic device but the signal strength between the smart card and the electronic device is greater than the preset signal strength, the smart card and the electronic device start communication and obtain energy from the electromagnetic field of the electronic device, so as to perform wireless charging and reduce the power consumption of the smart card. That is, when the smart card 100 moves in the direction close to the electronic device and meets the preset condition, a communication start signal is sent to the radio frequency component 120, so that the radio frequency component 120 makes a radio frequency connection with the electronic device, and thus wireless power is taken during the communication with the electronic device, saving the power of the power supply 130.

[0032] The above smart card provided by the embodiment of the present invention can significantly reduce the probability of the electronic device communicating with the smart card getting stuck, thereby improving the stability of smart card communication.

[0033] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of another smart card provided by this embodiment. As Figure 2 shown, the smart card 200 includes a control module 210, a radio frequency component 220, a power supply 230, and a monitoring module 240. The output end of the radio frequency component 220 is connected to the control module 210, the power supply end of the power supply 230 is connected to the power supply input end of the control module 210, the input end of the monitoring module 240 is connected to the output end of the radio frequency component 220, and the output end of the monitoring module 240 is connected to the control module 210.

[0034] The monitoring module 240 is configured to: monitor the parameter indicating the field strength between the smart card 200 and the electronic device during the process of the smart card 200 moving away from the electronic device, and send a first monitoring signal to the control module 210 when the parameter meets the preset parameter condition; the control module 210 is configured to send a communication shutdown signal to the radio frequency component 220 according to the first monitoring signal;

[0035] Among them, the preset condition means that the smart card 200 is in the presence stage. The presence stage is the stage in which the wireless signal strength detected by the monitoring module 240 through the radio frequency component 220 is greater than or equal to the first preset signal strength. It can be understood that the control module 210 is used to monitor the wireless signal strength between the smart card 200 and the electronic device. The radio frequency component 220 is used to control the disconnection state of the connection between the smart card 200 and the electronic device. The power supply 230 is used to supply power to the smart card 200. The monitoring module 240 is used to monitor the parameter of the field strength between the smart card 200 and the electronic device and send a monitoring signal to the control module 210.

[0036] That is to say, if the monitoring module 240 monitors that the wireless signal strength between the smart card 200 and the electronic device is less than the first preset signal strength through the radio frequency component 220 during the process of the smart card 200 moving away from the electronic device, the monitoring module 240 sends a first monitoring signal to the control module 210, so that the control module 210 sends a communication shutdown signal to the radio frequency component 220 to disconnect the radio frequency connection between the radio frequency component 220 and the electronic device. If the monitoring module 240 monitors that the wireless signal strength between the smart card 200 and the electronic device is greater than or equal to the first preset signal strength through the radio frequency component 220 during the process of the smart card 200 moving closer to the electronic device, the monitoring module 240 sends a second monitoring signal to the control module 210, so that the control module 210 sends a communication shutdown signal to the radio frequency component 220 to enable the radio frequency component 220 to establish a radio frequency connection with the electronic device.

[0037] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another smart card provided in this embodiment. As Figure 3 shown, the smart card 300 includes: a radio frequency component 310, a power supply 320, a monitoring module 330 and a control module. The control module includes: a security element 340. The security element 340 includes a power supply input terminal, a signal input terminal and a power control terminal. The output terminal of the radio frequency component 310 and the power supply terminal of the power supply 320 are both electrically connected to the power supply input terminal of the security element 340. The output terminal of the radio frequency component 310 is electrically connected to the signal input terminal of the security element 340 through the monitoring module 330. The power control terminal of the security element 340 is electrically connected to the power supply 320.

[0038] When the control module includes the security element 340, the power supply 320 is configured to: power the security element 340 when the field strength between the smart card 300 and the electronic device is less than a preset field strength; the power supply 320 is further configured to: when the field strength between the smart card 300 and the electronic device is not less than the preset field strength, the power supply 320 stops powering the security element and the RF component 310 powers the security element 340. The monitoring module 330 is configured to: monitor the parameter indicating the field strength between the smart card 300 and the electronic device during the process of the smart card 300 moving away from the electronic device, and send a first monitoring signal to the security element 340 when the parameter meets the preset parameter condition. The security element 340 is configured to send a communication shutdown signal to the RF component 310 according to the first monitoring signal. It can be understood that the security element 340 is used to send a communication shutdown signal or a communication startup signal to the RF component 310 according to the received monitoring signal to control the connection state between the smart card 300 and the electronic device.

[0039] That is to say, if the monitoring module 330 monitors that the wireless signal strength between the smart card 300 and the electronic device is less than the first preset signal strength during the process of the smart card 300 moving away from the electronic device, the monitoring module 330 sends a first monitoring signal to the signal input end of the security element 340, so that the security element 340 sends a communication shutdown signal to the RF component 310 through the power supply input end, so that the RF component 310 disconnects the RF connection with the electronic device, and sends a signal to the power supply 320 through the power control end to make the power supply 320 start to power the security element 340; if the monitoring module 330 monitors that the wireless signal strength between the smart card 300 and the electronic device is greater than or equal to the first preset signal strength during the process of the smart card 300 moving towards the electronic device, the monitoring module 330 sends a second monitoring signal to the signal input end of the security element 340, so that the security element 340 sends a communication shutdown signal to the RF component 310 through the power supply input end, so that the RF component 310 makes an RF connection with the electronic device, and sends a signal to the power supply 320 through the power control end to make the power supply 320 stop powering the security element 340.

[0040] Please refer to Figure 4 , Figure 4 for the structural schematic diagram of another smart card provided in this embodiment, as Figure 4As shown in the figure, the smart card 400 includes: a radio frequency component 410, a power supply 420, a monitoring module 430, and a control module. The control module includes: a first control element 450 and a second control element 440. The first control element 450 includes a power supply input terminal, a signal input terminal, a power supply control terminal, and a first control terminal. The second control element 440 includes a power supply input terminal, a first signal terminal, and a second signal terminal. The output terminal of the radio frequency component 410 and the power supply control terminal of the first control element 450 are respectively electrically connected to the power supply input terminal of the second control element 440. The output terminal of the radio frequency component 410 is electrically connected to the signal input terminal of the first control element 450 through the monitoring module 430. The power supply input terminal of the first control element 450 is electrically connected to the power supply 420. The first control terminal of the first control element 450 is electrically connected to the first signal terminal of the second control element 440. The second signal terminal of the second control element 440 is electrically connected to the radio frequency component 410. Among them, the first control element 450 may include a Microcontroller Unit (MCU), and the second control element 440 may include a Secure Element (SE).

[0041] When the control module includes the first control element 450 and the second control element 440, the power supply 420 is configured to: supply power to the first control element 450 and the second control element 440 when the field strength between the smart card 400 and the electronic device is less than a preset field strength; when the field strength between the smart card 400 and the electronic device is not less than the preset field strength, the power supply 420 supplies power to the first control element 450 and stops supplying power to the second control element 440, and the radio frequency component 410 supplies power to the second control element 440. The monitoring module 430 is configured to: monitor a parameter indicating the field strength between the smart card 400 and the electronic device during the process of the smart card 400 moving away from the electronic device, and send a first monitoring signal to the first control element 450 when the parameter meets the preset parameter condition; the first control element 450 is configured to: send a first departure signal to the second control element 440 when receiving the first monitoring signal; the second control element 440 is configured to: send a communication shutdown signal to the radio frequency component 410 when receiving the first departure signal. Among them, the first control element 450 may be an MCU, and the second control element 440 may be an SE.

[0042] That is to say, if the monitoring module 430 detects that the parameter of the field strength between the smart card 400 and the electronic device is less than the first preset signal strength during the process of the smart card 400 moving away from the electronic device, the monitoring module 430 sends a first monitoring signal to the signal input end of the first control element 450. At this time, the first control element 450 sends a first departure signal to the second control element 440 according to the first monitoring signal, so that the second control element 440 sends a communication shutdown signal to the radio frequency component 410, so that the radio frequency component 410 disconnects the radio frequency connection with the electronic device, and sends a signal to the power supply 420 through the power control terminal, so that the power supply 420 starts to supply power to the second control element 440.

[0043] In addition, in the control module including the first control element 450 and the second control element 440, and the monitoring module 430 is configured to send a second monitoring signal to the first control element 450 when the smart card 400 approaches the electronic device and meets the preset conditions. At this time, the first control element 450 is configured to: close the data transmission channel with the second control element 440 when receiving the second monitoring signal; the monitoring module 430 is further configured to: monitor the parameter indicating the field strength between the smart card 400 and the electronic device during the process of the smart card 400 moving away from the electronic device, and send a first monitoring signal to the first control element 450 when the parameter meets the preset parameter conditions; the first control element 450 is configured to: open the data transmission channel with the second control element 440 when receiving the first monitoring signal.

[0044] That is to say, if the monitoring module 430 detects that the parameter of the field strength between the smart card 400 and the electronic device is greater than or equal to the first preset signal strength during the process of the smart card 400 moving towards the electronic device, the monitoring module 430 sends a second monitoring signal to the signal input end of the first control element 450. At this time, the first control element 450 sends a first approach signal to the second control element 440 according to the second monitoring signal, so that the second control element 440 sends a communication startup signal to the radio frequency component 410, so that the radio frequency component 410 makes a radio frequency connection with the electronic device, and sends a signal to the power supply 420 through the power control terminal, so that the power supply 420 stops supplying power to the second control element 440.

[0045] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of another smart card provided in this embodiment, as Figure 5As shown, the smart card 500 includes: a radio frequency component 510, a power supply 520, a monitoring module 530, a power-taking voltage stabilizing circuit 550, a power supply voltage stabilizing circuit 560, and a control module. The control module includes: a security element 540, and the security element 540 includes a power supply input terminal, a signal input terminal, and a power control terminal.

[0046] When the control module includes the security element 540, the output terminal of the power-taking voltage stabilizing circuit 550 is electrically connected to the power supply input terminal of the security element 540. In addition, the smart card 500 further includes a power supply voltage stabilizing circuit 560. The power supply voltage stabilizing circuit 560 includes an input terminal, an output terminal, and an enable terminal. The input terminal of the power supply voltage stabilizing circuit 560 is electrically connected to the output terminal of the power supply 520. The output terminal of the power supply voltage stabilizing circuit 560 is electrically connected to the power supply input terminal of the security element 540. The power control terminal of the security element 540 is electrically connected to the enable terminal of the power supply voltage stabilizing circuit 560. The output terminal of the radio frequency component 510 is electrically connected to the signal input terminal of the security element 540 through the monitoring module 530. Among them, the power-taking voltage stabilizing circuit 550 can be LDO1, and the power supply voltage stabilizing circuit 560 can be LDO2.

[0047] At this time, the security element 540 is configured to: when the smart card 500 is close to the electronic device and meets the preset conditions, send an enable signal to the power supply voltage stabilizing circuit 560 through the enable terminal of the power supply voltage stabilizing circuit 560; the power supply voltage stabilizing circuit 560 is configured to switch to a non-conducting state when receiving the enable signal to stop the power supply 520 from supplying power to the security element 540.

[0048] That is to say, if the monitoring module 530 detects that the wireless signal strength between the smart card 500 and the electronic device is less than the first preset signal strength during the process of the smart card 500 moving away from the electronic device, the monitoring module 530 sends a first monitoring signal to the signal input end of the security element 540, enabling the security element 540 to send a communication shutdown signal to the radio frequency component 510 through the power supply input end, so that the radio frequency component 510 disconnects the radio frequency connection with the electronic device, and sends a signal to the power supply 520 through the power control end to make the power supply 520 supply power to the security element 540; if the monitoring module 530 detects that the wireless signal strength between the smart card 500 and the electronic device is greater than or equal to the first preset signal strength during the process of the smart card 500 moving closer to the electronic device, the monitoring module 530 sends a second monitoring signal to the signal input end of the security element 540, enabling the security element 540 to send a communication shutdown signal to the radio frequency component 510 through the power supply input end, so that the radio frequency component 510 establishes a radio frequency connection with the electronic device, supplies the electric energy obtained by wireless power extraction to the security element 540 after passing through the power extraction and voltage regulation circuit 550, and sends an enabling signal to the enabling end of the power supply voltage regulation circuit 560 through the power control end to make the power supply voltage regulation circuit 560 switch to a non-conducting state to stop the power supply 520 from supplying power to the security element 540.

[0049] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of another smart card provided in this embodiment, as Figure 6As shown in the figure, the smart card 600 includes: a radio frequency component 610, a power supply 620, a monitoring module 630, a first control element 650, a second control element 640, a power extraction and voltage regulation circuit 660, a switch 670, and a screen 680. The radio frequency component 610 includes: a coil 611 and non-contact power extraction 612. In addition, when the control module includes: the first control element 650 and the second control element 640, the power supply input terminal of the first control element 650 is electrically connected to the power supply 620 through the switch 670. The smart card 600 further includes a first diode and a second diode. The first control element 650 includes a power supply input terminal, a signal input terminal, a power supply control terminal, and a first control terminal. The second control element 640 includes a power supply input terminal, a first signal terminal, and a second signal terminal. The first diode is disposed between the output terminal of the radio frequency component 610 and the power supply input terminal of the second control element 640. The second diode is disposed between the power supply control terminal of the first control element 650 and the power supply input terminal of the second control element 640. The output terminal of the radio frequency component 610 is electrically connected to the signal input terminal of the first control element 650 through the monitoring module 630. The power supply input terminal of the first control element 650 is electrically connected to the power supply 620 through the switch 670. The first control terminal of the first control element 650 is electrically connected to the first signal terminal of the second control element 640. The second signal terminal of the second control element 640 is electrically connected to the radio frequency component 610 through the first diode and the power extraction and voltage regulation circuit 660. The output terminal of the power extraction and voltage regulation circuit 660 is electrically connected to the power supply input terminal of the second control element 640. The positive electrode of the first diode is electrically connected to the output terminal of the power extraction and voltage regulation circuit 660, and the negative electrode of the first diode is electrically connected to the power supply input terminal of the second control element 640. The positive electrode of the second diode is electrically connected to the power supply control terminal of the first control element 650, and the negative electrode of the second diode is electrically connected to the power supply input terminal of the second control element 640. The switch 670 is disposed between the power supply 620 and the first control element 650. The screen 680 is connected to the first control element 650.

[0050] That is to say, if the monitoring module 630 monitors that the parameter of the field strength between the smart card 600 and the electronic device is greater than or equal to the first preset signal strength during the process of the smart card 600 moving towards the direction close to the electronic device, the monitoring module 630 sends a second monitoring signal to the signal input terminal of the first control element 650. At this time, the first control element 650 sends a first approach signal to the second control element 640 according to the second monitoring signal, so that the second control element 640 sends a communication start signal to the radio frequency component 610, so that the radio frequency component 610 makes a radio frequency connection with the electronic device, and supplies power to the second control element 640 through the power extraction and voltage regulation circuit 660 and the first diode after obtaining the electric energy by wireless power extraction, and sends a signal to the power supply 620 through the power supply control terminal to make the power supply 620 stop supplying power to the second control element 640.

[0051] Please refer to Figure 7 , Figure 7 which is a schematic structural diagram of an intelligent card 700 provided in this embodiment. As Figure 7 shown, the intelligent card 700 includes: a radio frequency component 710, a power supply 720, a monitoring module 730, a first control element 750, a second control element 740, a power-taking voltage stabilization circuit 760, a power supply voltage stabilization circuit 770, and a screen 780. The radio frequency component 710 includes: a coil 711 and a non-contact power-taking component 712. The first control element 750 includes a power supply input terminal, a signal input terminal, a power supply control terminal, and a first control terminal. The second control element 740 includes a power supply input terminal, a first signal terminal, and a second signal terminal.

[0052] The non-contact power-taking component 712 is electrically connected to the signal input terminal of the first control element 750 through the monitoring module 730. The power supply input terminal of the first control element 750 is electrically connected to the power supply 720 through the power supply voltage stabilization circuit 770. The first control terminal of the first control element 750 is electrically connected to the first signal terminal of the second control element 740. The second signal terminal of the second control element 740 is connected to the non-contact power-taking component 712 through the coil 711. When the control module includes the first control element 750 and the second control element 740, the first control element 750 further includes an enable control terminal. The input terminal of the power supply voltage stabilization circuit 770 is electrically connected to the output terminal of the power supply 720. The output terminal of the power supply voltage stabilization circuit 770 is electrically connected to the power supply input terminal of the first control element 750 and the power supply input terminal of the second control element 740 respectively. The enable control terminal of the second control element 740 is electrically connected to the enable terminal of the power supply voltage stabilization circuit 770. The first control element 750 is configured to: when the intelligent card 700 approaches the electronic device and meets the preset conditions, send an enable signal to the power supply voltage stabilization circuit 770 through the enable terminal of the power supply voltage stabilization circuit 770. The power supply voltage stabilization circuit 770 is configured to, when receiving the enable signal, switch the power supply path between the power supply 720 and the second control element 740 to a non-conductive state to stop the power supply 720 from supplying power to the security element.

[0053] In summary, the present utility model can help reduce the jamming of the electronic device communicating with the intelligent card when the intelligent card fails to complete the screen refresh but the non-contact communication with the electronic device is disconnected. While saving the power of the power supply, it improves the stability and reliability of the intelligent card communication. In addition, the automatic switching based on the non-contact communication state also significantly improves the intelligence level of the intelligent card.

[0054] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the intelligent card described above can refer to the corresponding process in the foregoing embodiments and will not be elaborated herein.

[0055] In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0056] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An intelligent card, characterized in that, The smart card includes a control module, a radio frequency component, and a power supply. The output end of the radio frequency component is connected to the control module, and the power supply end of the power supply is connected to the power supply input end of the control module; The smart card is configured to communicate with an electronic device through the radio frequency component; The control module is configured to: when the smart card moves away from the electronic device and meets a preset condition, send a communication shutdown signal to the radio frequency component, so that the radio frequency component disconnects the radio frequency connection with the electronic device.

2. The smart card according to claim 1, wherein The smart card further includes: a monitoring module, the input end of the monitoring module is connected to the output end of the radio frequency component, and the output end of the monitoring module is connected to the control module; The monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send a first monitoring signal to the control module when the parameter meets a preset parameter condition; The control module is configured to send the communication shutdown signal to the radio frequency component according to the first monitoring signal.

3. The smart card according to claim 2, wherein the control module includes a security element, the security element includes a power supply input end, a signal input end, and a power control end. The output end of the radio frequency component and the power supply end of the power supply are both electrically connected to the power supply input end of the security element. The output end of the radio frequency component is electrically connected to the signal input end of the security element through the monitoring module, and the power control end of the security element is electrically connected to the power supply; or, the control module includes a first control element and a second control element. The first control element includes a power supply input end, a signal input end, a power supply control end, and a first control end. The second control element includes a power supply input end, a first signal end, and a second signal end. The output end of the radio frequency component and the power supply control end of the first control element are respectively electrically connected to the power supply input end of the second control element. The output end of the radio frequency component is electrically connected to the signal input end of the first control element through the monitoring module. The power supply input end of the first control element is electrically connected to the power supply. The first control end of the first control element is electrically connected to the first signal end of the second control element, and the second signal end of the second control element is electrically connected to the radio frequency component.

4. The smart card according to claim 3, wherein when the control module includes the security element, the power supply is configured to: supply power to the security element when the field strength between the smart card and the electronic device is less than a preset field strength; when the field strength between the smart card and the electronic device is not less than the preset field strength, the power supply stops supplying power to the security element and the radio frequency component supplies power to the security element; When the control module includes the first control element and the second control element, the power supply is configured to: supply power to the first control element and the second control element when the field strength between the smart card and the electronic device is less than a preset field strength; When the field strength between the smart card and the electronic device is not less than the preset field strength, the power supply supplies power to the first control element and stops supplying power to the second control element, and the radio frequency component supplies power to the second control element.

5. The smart card according to claim 3, wherein When the control module includes a security element, the monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send the first monitoring signal to the security element when the parameter meets a preset parameter condition, and the security element is configured to send the communication shutdown signal to the radio frequency component according to the first monitoring signal; When the control module includes a first control element and a second control element, the monitoring module is configured to: monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send the first monitoring signal to the first control element when the parameter meets a preset parameter condition; The first control element is configured to send a first departure signal to the second control element when receiving the first monitoring signal; The second control element is configured to send the communication shutdown signal to the radio frequency component when receiving the first departure signal.

6. The smart card according to claim 3, wherein When the control module includes a first control element and a second control element, the monitoring module is configured to send a second monitoring signal to the first control element when the smart card approaches the electronic device and meets a preset condition; The first control element is configured to close the data transmission channel with the second control element when receiving the second monitoring signal; The monitoring module is further configured to monitor a parameter indicating the field strength between the smart card and the electronic device during the process of the smart card moving away from the electronic device, and send the first monitoring signal to the first control element when the parameter meets a preset parameter condition; The first control element is configured to open the data transmission channel with the second control element when receiving the first monitoring signal.

7. The smart card according to any one of claims 3 to 6, characterized in that, The smart card further includes: a power-taking voltage stabilizing circuit, and the input end of the power-taking voltage stabilizing circuit is electrically connected to the output end of the radio frequency component; When the control module includes a security element, the output end of the power-taking voltage stabilizing circuit is electrically connected to the power supply input end of the security element; When the control module includes a first control element and a second control element, an output terminal of the power-taking and voltage-stabilizing circuit is electrically connected to a power supply input terminal of the second control element.

8. The smart card according to claim 7, wherein When the control module includes a first control element and a second control element, the smart card further includes a first diode. A positive electrode of the first diode is electrically connected to an output terminal of the power-taking and voltage-stabilizing circuit, and a negative electrode of the first diode is electrically connected to the power supply input terminal of the second control element.

9. The smart card according to any one of claims 3 to 6, wherein When the control module includes a first control element and a second control element, the smart card further includes a second diode, a positive electrode of the second diode is electrically connected to a power supply control terminal of the first control element, and a negative electrode of the second diode is electrically connected to the power supply input terminal of the second control element.

10. The smart card according to any one of claims 3 to 6, wherein When the control module includes a security element, the smart card further includes a power supply voltage-stabilizing circuit, and the power supply voltage-stabilizing circuit includes an input terminal, an output terminal, and an enable terminal; The input terminal of the power supply voltage-stabilizing circuit is electrically connected to an output terminal of the power supply, the output terminal of the power supply voltage-stabilizing circuit is electrically connected to a power supply input terminal of the security element, and a power supply control terminal of the security element is electrically connected to the enable terminal of the power supply voltage-stabilizing circuit; The security element is configured to: when the smart card is close to the electronic device and meets a preset condition, send an enable signal to the power supply voltage-stabilizing circuit through the enable terminal of the power supply voltage-stabilizing circuit; The power supply voltage-stabilizing circuit is configured to switch to a non-conducting state when receiving the enable signal to stop the power supply from supplying power to the security element; When the control module includes the first control element and the second control element, a power supply input terminal of the first control element is electrically connected to the power supply through a switch.

Images