Multifunctional non-contact card
By adding a trigger circuit and a load module to the contactless card, a multi-functional contactless card was realized, solving the problem of limited functionality and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-17
AI Technical Summary
Existing contactless cards have limited functionality, failing to meet personalized and portable needs, resulting in a poor user experience.
By adding trigger circuits and load modules to the contactless card, including LED lights, voice playback components, and socket contact components, these components are triggered by induction coils to achieve multiple functions.
It implements multiple functions such as lighting effects, voice playback, and extended load capacity, improving the product's reusability and user experience.
Smart Images
Figure CN224005503U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of circuit technology, and in particular relates to a multifunctional contactless card. Background Technology
[0002] Contactless cards (Integrated Circuit Cards), also known as radio frequency cards, are now widely used in people's daily lives and work. They are mainly used in automatic fare collection systems for buses, ferries, and subways, or in various fields such as access control, identity verification, and e-wallets.
[0003] However, existing contactless cards can only perform one function, namely, sensing the signal emitted by the card reader and performing operations such as data modification and / or storage based on the signal. This single function can no longer meet people's personalized and portable needs. Utility Model Content
[0004] The purpose of this invention is to at least solve the problem of limited functionality in contactless cards. This purpose is achieved through the following technical solution:
[0005] The first aspect of this utility model proposes a multifunctional contactless card, comprising:
[0006] The system comprises an SE (Secure Element) chip, an induction coil, a trigger circuit, and a load module; wherein the induction coil is connected to the SE chip and the trigger circuit, and the trigger circuit is connected to the load module.
[0007] The load module includes at least: an LED light, a voice playback component, and a socket contact component.
[0008] The multifunctional contactless card provided by this utility model adds a trigger circuit and a load module to the original SE chip and induction coil. When the induction coil senses a signal, the signal is transmitted to the SE chip to realize the original function of the contactless card, and also transmitted to the trigger circuit to trigger the load module to realize the new function. Since the load module can include LED lights, voice playback components, socket contact components, etc., it can realize multiple functions such as lighting effects, voice playback and extended load capacity, fully meeting people's personalized needs and improving product reusability.
[0009] In addition, the multifunctional contactless card provided by this utility model may also have the following additional technical features:
[0010] In some embodiments of this utility model, the trigger circuit includes a diode, a first resistor, and a first capacitor;
[0011] The positive terminal of the diode is connected to one end of the induction coil, the negative terminal of the diode is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the first capacitor and the load module, and the other end of the first capacitor shares a common ground with the load module and the induction coil.
[0012] In some embodiments of this utility model, the trigger circuit includes a rectifier bridge and a second capacitor;
[0013] The input terminal of the rectifier bridge is connected to the induction coil. One end of the second capacitor is connected to the output terminal of the rectifier bridge and the load module, respectively. The other end of the second capacitor is grounded together with the load module, the rectifier bridge, and the induction coil.
[0014] In some embodiments of this utility model, the voice playback component includes a voice chip, a speaker, and a first power supply, wherein the first power supply supplies power to the voice chip, and the speaker is connected to the voice chip.
[0015] In some embodiments of this utility model, the trigger circuit includes a second resistor, a third resistor, a control chip, and a second power supply;
[0016] One end of the second resistor is connected to the induction coil, and the other end of the second resistor is connected to one end of the third resistor and the wake-up pin of the control chip. The IO (Input / Output) pin of the control chip is connected to the load module, and the second power supply pin of the control chip is connected to the second power supply. The induction coil, the other end of the third resistor, the control chip, and the load module share a common ground.
[0017] In some embodiments of this invention, the voice playback component includes a speaker.
[0018] In some embodiments of this utility model, the socket contact assembly may take any of the following forms:
[0019] Circular copper sheet or solder pad contact, stamp hole contact, or strip copper sheet contact;
[0020] Pins or sockets;
[0021] FPC (Flexible Printed Circuit) connector.
[0022] In some embodiments of this utility model, the induction coil includes a set of coils;
[0023] The set of coils is connected to both the SE chip and the trigger circuit.
[0024] In some embodiments of this utility model, the induction coil includes two sets of coils, one set of coils being connected to the SE chip and the other set of coils being connected to the trigger circuit.
[0025] In some embodiments of this utility model, the shape of the contactless card includes at least square and circular. Attached Figure Description
[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0027] Figure 1 A schematic diagram of the circuit structure of a multifunctional contactless card is shown.
[0028] Figure 2 A schematic diagram of a specific structure of a trigger circuit is shown.
[0029] Figure 3 A schematic diagram of another trigger circuit is shown.
[0030] Figure 4 A schematic diagram of the specific structure of yet another trigger circuit is shown.
[0031] The labels in the attached diagram are as follows:
[0032] 10-SE chip, 20-induction coil, 30-trigger circuit, 40-load module;
[0033] D1 - Diode, R1 - First resistor, C1 - First capacitor;
[0034] D2 - Rectifier bridge, C2 - Second capacitor;
[0035] R2 - Second resistor, R3 - Third resistor, U1 - Control chip U1, T - Second power supply. Detailed Implementation
[0036] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0037] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0038] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0039] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.
[0040] The circuit structure of a traditional contactless card includes an SE chip and an induction coil. When the card is swiped, the induction coil senses the signal and transmits it to the SE chip for processing to realize the card swiping operation.
[0041] This shows that traditional contactless cards can only perform a single function and cannot meet people's personalized needs, resulting in a poor user experience.
[0042] To improve user experience, this utility model proposes a multifunctional contactless card. Figure 1 A schematic diagram of a multifunctional contactless card structure according to an embodiment of the present invention is shown, including an SE chip 10, an induction coil 20, a trigger circuit 30, and a load module 40. The induction coil 20 is connected to both the SE chip 10 and the trigger circuit 30, and the trigger circuit 30 is connected to the load module 40. Further, the load module 40 may include an LED light, a voice playback component, a socket contact component, etc.
[0043] Among them, the LED light enables the contactless card to have a lighting function, the voice playback component enables the contactless card to have a voice broadcast function, and the socket contact component enables the contactless card to have an extended load-carrying function.
[0044] The trigger circuit 30 is used to trigger the load module 40 to start working based on the induction signal of the induction coil, such as triggering the LED to start illuminating, triggering the voice playback component to play a specified voice, or triggering the load-carrying function component of the socket contact to start working.
[0045] The SE chip 10 has a certain degree of independence and security, with its own kernel, memory, encryption engine, etc. It is used to securely store and process sensitive data such as personal identity information, bank card data, and access control information, which can prevent data from being tampered with or stolen. In contactless cards, it can realize secure identity verification or payment functions through interaction with the card reader.
[0046] Understandably, in order to realize the function of the SE chip, peripheral circuit devices are also set around the SE chip, such as matching capacitors used to adjust the center frequency.
[0047] The multifunctional contactless card provided by this utility model, based on the original SE chip and induction coil, adds a trigger circuit and a load module. When the induction coil senses a signal, the signal is transmitted to the SE chip to realize the original function of the contactless card, and also transmitted to the trigger circuit to trigger the load module to realize the new function. Since the load module can include LED lights, voice playback components, socket contact components, etc., it can realize multiple functions such as lighting effects, voice playback and extended load capacity, fully meeting people's personalized needs and improving product reusability.
[0048] Optionally, the induction coil 20 may include one set of coils or two sets of coils.
[0049] Furthermore, in the case of a set of coils, this set of coils is simultaneously connected to the SE chip 10 and the trigger circuit 30. That is, the SE chip 10 and the trigger circuit 30 are connected in parallel to the induction coil 20 to ensure that the induction signal of the induction coil 20 is received by both the SE chip 10 and the trigger circuit 30, and that the SE chip 10 and the trigger circuit 30 receive induction signals of the same magnitude.
[0050] With two sets of coils, one set of coils is connected to the SE chip 10, and the other set of coils is connected to the trigger circuit 30. That is, when the contactless card is placed on the card reader, the entire contactless card is in a certain field strength, and both sets of coils will generate induction signals. Thus, the induction signal of one set of coils will be received by the SE chip 10, and the induction signal of the other set of coils will be received by the trigger circuit 30, without interference between them.
[0051] In some embodiments of this utility model, the shape of the contactless card includes, but is not limited to, square, circular, etc., for easy carrying. For example, the contactless card is designed to be square with dimensions of 32mm*25mm or 23mm*15mm, or circular with a diameter of 32mm.
[0052] In some embodiments of this invention, the trigger circuit 30 can trigger the load module 40 to operate via half-wave rectification. Figure 2 A schematic diagram of a trigger circuit is shown, which includes a diode D1, a first resistor R1, and a first capacitor C1. The positive terminal of diode D1 is connected to one end of the induction coil 20, and the negative terminal of diode D1 is connected to one end of the first resistor R1. The other end of the first resistor R1 is connected to one end of the first capacitor C1 and the load module 40, respectively. The other end of the first capacitor C1, the load module 40, and the induction coil 20 are all grounded.
[0053] The induced signal of the induction coil 20 is an AC signal. When the AC voltage of the AC signal is in the positive half-cycle, the diode D1 is in the forward bias state and conducts, and the first capacitor C1 begins to charge. The capacitor voltage of the first capacitor C1 gradually rises until it approaches the peak value. When the AC voltage of the AC signal enters the negative half-cycle, the diode D1 is in the reverse bias state and cuts off. The electrical energy stored in the first capacitor C1 after charging in the positive half-cycle is used to maintain the voltage at the output terminal by discharging itself until the discharge is complete. This cycle repeats according to the periodic changes of the AC signal.
[0054] Therefore, during the positive half-cycle of the AC signal, the output voltage is basically the same as the positive half-cycle waveform of the AC voltage. During the negative half-cycle of the AC signal, the output voltage is zero because the diode is cut off and current cannot pass through. Therefore, the output voltage of the trigger circuit 30 is a unidirectional pulsating DC voltage, which only includes the positive half-cycle portion of the input AC signal.
[0055] Furthermore, when the output voltage of the trigger circuit 30 reaches the operating voltage required by the load module 40, the load module 40 starts to work.
[0056] In this embodiment, the conversion of AC signals to DC signals is achieved by utilizing the unidirectional conductivity of diodes. The circuit structure is simple, easy to implement, and conducive to the miniaturization of contactless cards.
[0057] In other embodiments of this invention, the trigger circuit 30 can also trigger the load module 40 to operate via full-wave rectification. Figure 3 A schematic diagram of another trigger circuit is shown, which includes a rectifier bridge D2 and a second capacitor C2. The input terminal of the rectifier bridge D2 is connected to the induction coil 20. One end of the second capacitor C2 is connected to the output terminal of the rectifier bridge D2 and the load module, respectively. The other end of the second capacitor C2 is grounded together with the load module 40, the rectifier bridge D2, and the induction coil 20.
[0058] The rectifier bridge D2 consists of four diodes forming a bridge structure, which is used to convert the AC signal of the induction coil 20 into a DC signal. The second capacitor C2 is used for filtering and smoothing the output voltage.
[0059] When the AC voltage of the AC signal is in the positive half-cycle, two diodes in rectifier bridge D2 are conducting, while the other two are cut off. When the current voltage of the AC signal is in the negative half-cycle, the conducting and cut-off diodes in rectifier bridge D2 are exactly opposite to those in the positive half-cycle. Throughout the entire AC cycle, current always flows through load module 40 in the same direction. Therefore, load module 40 receives a unidirectional pulsating DC voltage that includes both the positive and negative half-cycles of the AC signal.
[0060] Furthermore, when the output voltage of the trigger circuit 30 reaches the operating voltage required by the load module 40, the load module 40 is triggered to start working.
[0061] In this embodiment, the trigger circuit utilizes a rectifier bridge for full-wave rectification, which can utilize both half cycles of the AC current, resulting in high rectification efficiency. Furthermore, the second capacitor can make the DC signal output more stable.
[0062] It should be noted that, based on the scenario where the trigger circuit 30 triggers the load module 40 to operate via full-wave rectification or half-wave rectification, the voice playback component in the load module 40 may include a voice chip, a speaker, and a first power supply. The first power supply powers the voice chip, and the speaker is connected to the voice chip. The voice chip is in sleep mode with extremely low power consumption when there is no DC signal rectified by the trigger circuit 30. When a DC signal is input, the voice chip is awakened from sleep mode and controls the speaker to operate. In other words, after being awakened by the DC signal rectified by the trigger circuit 30, the voice chip controls the speaker to emit sound.
[0063] In some other embodiments of this invention, the trigger circuit 30 can also trigger the load module 40 to work by waking up the control chip. Figure 4 A schematic diagram of another trigger circuit is shown, which includes a second resistor R2, a third resistor R3, a control chip U1, and a second power supply T. One end of the second resistor R2 is connected to the induction coil 20, and the other end of the second resistor R2 is connected to one end of the third resistor R3 and the wake-up pin of the control chip U1. The IO pin of the control chip U1 is connected to the load module 40, and the second power supply pin VCC of the control chip U1 is connected to the second power supply T. The induction coil 20, the other end of the third resistor R3, the control chip U1, and the load module 40 share a common ground.
[0064] The control chip U1 is powered by the second power supply T. When there is no AC signal input, it is in sleep mode with extremely low power consumption. When there is an AC signal input, the control chip U1 is woken up from sleep mode. The control chip U1 can control the load module 40 to work through the IO pin.
[0065] Since the voltage of the induced signal of the induction coil 20 is generally large, it is divided by the second resistor R2 and the third resistor R3 so that when there is an AC signal input, it is divided into a small voltage signal by the resistors and then wakes up the control chip U1 to work.
[0066] Optionally, the control chip U1 can be a single-chip microcomputer CPU (Central Processing Unit).
[0067] It is understandable that the LED lights, voice playback components, and socket contacts in the load module 40 can be connected to one IO pin of the control chip U1, thereby enabling individual control of each functional component.
[0068] It should be noted that, based on the scenario where the trigger circuit 30 triggers the load module 40 to operate by waking up the control chip, the voice playback component in the load module 40 may only include the speaker. In this way, after the control chip is woken up from sleep mode, it can directly control the speaker to operate and emit sound.
[0069] In some embodiments of this utility model, the socket contact assembly may take any of the following forms:
[0070] Circular copper sheet or solder pad contact, stamp hole contact, or strip copper sheet contact;
[0071] Pins or sockets;
[0072] Flexible printed circuit board (FPC) connector.
[0073] Among them, the form of circular copper sheet or solder pad contact, or stamp hole contact, requires at least two contacts.
[0074] The form of a pin or socket also requires at least two pins or holes.
[0075] In this embodiment, the socket contacts in the load module are implemented in various forms to adapt to different usage scenarios.
[0076] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A multifunctional non-contact card characterized by, The application relates to a non-contact card, which comprises the following components: a security element (SE) chip, an induction coil, a trigger circuit and a load module; the induction coil is connected with the SE chip and the trigger circuit respectively, and the trigger circuit is connected with the load module; the load module comprises at least an LED lamp, a voice playing component and a socket contact component.
2. The multifunctional non-contact card according to claim 1, wherein the trigger circuit comprises a diode, a first resistor and a first capacitor; the anode of the diode is connected with one end of the induction coil, the cathode of the diode is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the first capacitor and the load module respectively, and the other end of the first capacitor is connected with the load module and the induction coil in common.
3. The multifunctional non-contact card according to claim 1, wherein the trigger circuit comprises a rectifier bridge and a second capacitor; the input end of the rectifier bridge is connected with the induction coil, one end of the second capacitor is connected with the output end of the rectifier bridge and the load module respectively, and the other end of the second capacitor is connected with the load module, the rectifier bridge and the induction coil in common.
4. The multi-functional non-contact card according to claim 2 or 3, characterized by, the voice playing component comprises a voice chip, a loudspeaker and a first power supply, the first power supply supplies power to the voice chip, and the loudspeaker is connected with the voice chip.
5. The multifunctional non-contact card according to claim 1, wherein the trigger circuit comprises a second resistor, a third resistor, a control chip and a second power supply; one end of the second resistor is connected with the induction coil, the other end of the second resistor is connected with one end of the third resistor and the wake-up pin of the control chip respectively, the input-output (IO) pin of the control chip is connected with the load module, the second power supply pin of the control chip is connected with the second power supply, and the induction coil, the other end of the third resistor, the control chip and the load module are connected in common.
6. The multi-functional non-contact card according to claim 5, wherein the voice playing component comprises a loudspeaker.
7. The multifunctional non-contact card according to claim 1, wherein the form of the socket contact component comprises any one of the following: a circular copper sheet, a pad contact, a stamp hole contact or a strip-shaped copper sheet contact; a pin or a socket; a flexible printed circuit board (FPC) soft connector.
8. The multifunctional non-contact card according to claim 1, wherein the induction coil comprises a group of coils; the group of coils is connected with the SE chip and the trigger circuit simultaneously.
9. The multifunctional non-contact card according to claim 1, wherein the induction coil comprises two groups of coils, one group of coils is connected with the SE chip, and the other group of coils is connected with the trigger circuit.
10. The multifunctional non-contact card according to claim 1, wherein the shape of the non-contact card comprises at least a square or a circle.