An IC card anti-interference circuit, device and electronic equipment

Abstract

The utility model discloses an IC card anti -interference circuit, device and electronic equipment, and electronic equipment includes IC card reading card module, controller and non -contact card reading module, and circuit includes power module, signal transmitting module and signal receiving module, the first end of signal transmitting module connects power module, and the transmitting end of signal transmitting module connects the input of signal receiving module, the first end of signal receiving module connects power module, and the second end of signal receiving module is grounded, and the output of signal receiving module is used for connecting controller, signal receiving module is used for when IC card reading card module does not exist IC card insertion, to enable signal receiving module's output end output opens signal, and controller controls non -contact card reading module to open, still be used for when IC card reading card module exists IC card insertion, disconnects and receives signal transmitting module to send the signal, to enable signal receiving module's output end output closes signal, and controller controls non -contact card reading module to close.

Description

Technical Field

[0001] This utility model relates to the field of IC card application technology, and in particular to an IC card anti-interference circuit, device and electronic equipment. Background Technology

[0002] In related technologies, payment devices are equipped with IC card swiping functions and under-display NFC. It often happens that when swiping an IC card, the under-display NFC is triggered, leading to accidental operations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an IC card anti-interference circuit, device and electronic device to solve the problem of accidental triggering of the contactless card reader module when the IC card is inserted.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An IC card anti-interference circuit is disclosed, applied to an electronic device. The electronic device includes an IC card reader module, a controller, and a contactless card reader module. The circuit includes a power supply module, a signal transmitting module, and a signal receiving module. A first terminal of the signal transmitting module is connected to the power supply module, a second terminal of the signal transmitting module is grounded, and the transmitting terminal of the signal transmitting module is connected to the input terminal of the signal receiving module. A first terminal of the signal receiving module is connected to the power supply module, a second terminal of the signal receiving module is grounded, and the output terminal of the signal receiving module is used to connect to the controller. The signal receiving module is used to receive the signal sent by the signal transmitting module when no IC card is inserted into the IC card reader module, so as to enable the output terminal of the signal receiving module to output an open signal. The controller is used to control the contactless card reader module to open when the open signal is received. The signal receiving module is also used to disconnect the reception of signals sent by the signal transmitting module when an IC card is inserted into the IC card reader module, so as to enable the output terminal of the signal receiving module to output a shutdown signal. The controller is used to control the contactless card reader module to shut down when it receives the shutdown signal.

[0005] Furthermore, the signal transmitting module includes a photoelectric transmitting component, and the signal receiving module includes a photoelectric receiving component; the photoelectric receiving component is used to receive the optical signal emitted by the photoelectric transmitting component; the output terminal of the photoelectric receiving component is used to connect to the controller.

[0006] Furthermore, the photoelectric emitting component includes a light-emitting diode and a first voltage regulator unit; the first end of the first voltage regulator unit is connected to the power module, the second end of the first voltage regulator unit is connected to the positive terminal of the light-emitting diode, and the negative terminal of the light-emitting diode is grounded.

[0007] Furthermore, the first voltage regulator unit includes a first resistor; the first end of the first resistor is connected to the power module, and the second end of the first resistor is connected to the positive terminal of the light-emitting diode.

[0008] Furthermore, the photoelectric receiving component includes a phototransistor, a second voltage regulator unit, and a filter unit; the first end of the second voltage regulator unit is connected to the power module, and the second end of the second voltage regulator unit is connected to the collector of the phototransistor and the first end of the filter unit, respectively, and is used to connect to the controller; the gate of the phototransistor is used to receive the light signal emitted by the photoelectric emitting component, and the emitter is grounded; the second end of the filter unit is grounded.

[0009] Furthermore, the filtering unit includes a first capacitor; the first end of the first capacitor is connected to the collector of the phototransistor, and the second end is grounded.

[0010] Furthermore, the second voltage regulator unit includes a second resistor; the first end of the second resistor is connected to the power module, and the second end of the second resistor is connected to the collector of the phototransistor.

[0011] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is as follows: An IC card anti-interference device includes an IC card reader module and an IC card anti-interference circuit as described above; a signal transmitting module and a signal receiving module are disposed opposite to each other in the IC card reader module; when an IC card is inserted into the IC card reader module, signal transmission between the signal transmitting module and the signal receiving module is blocked.

[0012] Furthermore, it also includes: a housing, in which the IC card reader module is disposed; card holders, waterproof foam and fixing plates are symmetrically arranged on both sides of the housing in the thickness direction; and a protective strip is provided on the outer periphery of the housing.

[0013] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is as follows: An electronic device includes an IC card reader module, a controller, a contactless card reader module, and an IC card anti-interference circuit as described above.

[0014] The beneficial effects of this utility model are as follows: This application detects the insertion and removal status of the IC card in the IC card reader module by using a signal transmitting module and a signal receiving module. When the IC card is not inserted, the signal receiving module can receive the signal emitted by the signal transmitting module. When the IC card is inserted, the IC card isolates the signal transmitting module and the signal receiving module, preventing the signal receiving module from receiving the signal emitted by the signal transmitting module. This allows the controller to detect the insertion status of the IC card. When the IC card is inserted, the output terminal of the signal receiving module outputs a shut-off signal to control the contactless card reader module to shut down. Therefore, this application solves the problem of accidental triggering of the contactless card reader module when the IC card is inserted, avoids misoperation, and improves ease of use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a module of an IC card anti-interference circuit in an embodiment of the present utility model; Figure 2 This is a circuit diagram of an IC card anti-interference circuit according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of an IC card anti-interference device according to an embodiment of the present invention; Figure 4 This is an exploded view of the structure of an IC card anti-interference device according to an embodiment of this utility model; Figure 5 This is a schematic diagram of the internal structure of an IC card anti-interference device according to an embodiment of the present invention; Label Explanation: VDD, power supply module; M1, signal transmitting module; M2, signal receiving module; U1, light-emitting diode; R1, first resistor; U2, phototransistor; R2, second resistor; C1, first capacitor; 1. IC card reader module; 2. Housing; 3. Card slot; 4. Waterproof foam; 5. Fixing plate; 6. Protective strip. Detailed Implementation

[0016] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0017] In related technologies, payment devices such as POS machines are typically equipped with IC card swiping functionality and contactless card reading modules. However, when swiping an IC card, the proximity of the IC card to the contactless card reading module often leads to accidental triggering of the module, resulting in erroneous operations.

[0018] To address the aforementioned technical problems, this utility model provides an IC card anti-interference circuit, device, and electronic device to solve the problem of accidental triggering of the contactless card reader module when an IC card is inserted.

[0019] Please refer to Figure 1 An IC card anti-interference circuit is used in electronic devices. The electronic devices include an IC card reader module 1, a controller, and a contactless card reader module. The circuit includes a power supply module VDD, a signal transmitting module M1, and a signal receiving module M2. The first terminal of the signal transmitting module M1 is connected to the power supply module VDD, the second terminal of the signal transmitting module M1 is grounded, and the transmitting terminal of the signal transmitting module M1 is connected to the input terminal of the signal receiving module M2. The first terminal of the signal receiving module M2 is connected to the power supply module VDD, the second terminal of the signal receiving module M2 is grounded, and the output terminal of the signal receiving module M2 is used to connect to the controller. The signal receiving module M2 is used to receive the signal sent by the signal transmitting module M1 when no IC card is inserted in the IC card reading module 1, so as to enable the output terminal of the signal receiving module M2 to output an open signal. The controller is used to control the contactless card reading module to open when the open signal is received. The signal receiving module M2 is also used to disconnect the signal sent by the receiving signal transmitting module M1 when an IC card is inserted into the IC card reading module 1, so as to enable the output terminal of the signal receiving module M2 to output a shutdown signal. The controller is used to control the contactless card reading module to shut down when the shutdown signal is received.

[0020] As described above, the beneficial effects of this utility model are as follows: By detecting the insertion and removal status of the IC card in the IC card reader module through the signal transmitting module and the signal receiving module, the signal receiving module can receive the signal emitted by the signal transmitting module when the IC card is not inserted. However, when the IC card is inserted, the IC card isolates the signal transmitting module and the signal receiving module, preventing the signal receiving module from receiving the signal emitted by the signal transmitting module. This allows the controller to detect the insertion status of the IC card. When the IC card is inserted, the output terminal of the signal receiving module outputs a shut-off signal to control the contactless card reader module to shut down. Therefore, this application solves the problem of accidental triggering of the contactless card reader module when the IC card is inserted, avoids misoperation, and improves ease of use.

[0021] In one optional embodiment, the signal transmitting module M1 includes a photoelectric transmitting component, and the signal receiving module M2 includes a photoelectric receiving component; the photoelectric receiving component is used to receive the light signal emitted by the photoelectric transmitting component; the output terminal of the photoelectric receiving component is used to connect to the controller. In other optional embodiments, the signal transmitting module M1 and the signal receiving module M2 can be other devices, such as the signal transmitting module M1 being a light sensor and the signal receiving module M2 being a pressure sensor, which determines whether an IC card is inserted by detecting the light signal and the pressure signal.

[0022] As described above, a photoelectric transmitting component is used as the signal transmitting module M1, and a photoelectric receiving component is used as the signal receiving module M2. The signal is transmitted through optical signals, so that when the IC card is inserted, the contactless card reader module is turned off by completely blocking the optical signal.

[0023] Please refer to Figure 2 In an optional embodiment, the photoelectric emitting component includes a light-emitting diode U1 and a first voltage regulator unit; the first terminal of the first voltage regulator unit is connected to the power module VDD, the second terminal of the first voltage regulator unit is connected to the positive terminal of the light-emitting diode U1, and the negative terminal of the light-emitting diode U1 is grounded.

[0024] As described above, by setting up a photoelectric emitting component consisting of a light-emitting diode U1 and a first voltage regulator unit, the first voltage regulator unit is connected to the power supply module VDD to supply power to the light-emitting diode U1, so that the light-emitting diode U1 continuously emits light signals.

[0025] In an optional embodiment, the first voltage regulator unit includes a first resistor R1; the first end of the first resistor R1 is connected to the power module VDD, and the second end of the first resistor R1 is connected to the positive terminal of the light-emitting diode U1.

[0026] As can be seen from the above description, using the first resistor R1 as the first voltage regulator unit can achieve voltage regulation while having a lower cost compared to other voltage regulator devices.

[0027] In an optional embodiment, the photoelectric receiving component includes a phototransistor U2, a second voltage regulator unit, and a filter unit; the first terminal of the second voltage regulator unit is connected to the power module VDD, the second terminal of the second voltage regulator unit is connected to the collector of the phototransistor U2 and the first terminal of the filter unit respectively, and is used to connect to the controller; the gate of the phototransistor U2 is used to receive the light signal emitted by the photoelectric emitting component, and the emitter is grounded; the second terminal of the filter unit is grounded.

[0028] As described above, a photoelectric receiving component is formed by setting up a phototransistor U2, a second voltage regulator unit, and a filter unit. The second voltage regulator unit is connected to the power module VDD to supply power to the phototransistor U2, so that the phototransistor U2 can continuously receive light signals when it is not blocked. The filter unit filters the output terminal, thereby outputting a more stable on and off signal.

[0029] In an optional embodiment, the filtering unit includes a first capacitor C1; the first end of the first capacitor C1 is connected to the collector of the phototransistor U2, and the second end is grounded.

[0030] As can be seen from the above description, by using the first capacitor C1 as a filtering unit, the AC signal generated at the output terminal can be effectively filtered.

[0031] In an optional embodiment, the second voltage regulator unit includes a second resistor R2; the first end of the second resistor R2 is connected to the power module VDD, and the second end of the second resistor R2 is connected to the collector of the phototransistor U2.

[0032] As can be seen from the above description, using the second resistor R2 as the second voltage regulator unit can achieve voltage regulation while having a lower cost compared to other voltage regulator devices.

[0033] Please refer to Figures 2-5 Another embodiment of this utility model provides an IC card anti-interference device, including an IC card reading module 1 and an IC card anti-interference circuit as described above; a signal transmitting module M1 and a signal receiving module M2 are disposed opposite to each other in the IC card reading module 1; when the IC card is inserted into the IC card reading module 1, the signal transmission between the signal transmitting module M1 and the signal receiving module M2 is blocked.

[0034] As described above, by arranging the signal transmitting module M1 and the signal receiving module M2 opposite to each other within the IC card reader module 1, when an IC card is inserted, the signal transmitting module M1 and the signal receiving module M2 are isolated. The signal receiving module M2 cannot receive the signal emitted by the signal transmitting module M1, thereby enabling the controller to detect the IC card insertion status and, upon receiving a shutdown signal, control the contactless card reader module to shut down. This solves the problem of erroneous triggering of the contactless card reader module when an IC card is inserted. In an optional embodiment, it further includes: a housing 2, with the IC card reader module 1 disposed inside the housing 2; a card holder 3, waterproof foam 4, and a fixing plate 5 symmetrically arranged on both sides of the housing 2 in the thickness direction; and a protective strip 6 provided on the outer periphery of the housing 2.

[0035] As can be seen from the above description, by setting the IC card reader module 1 inside the housing 2 and setting the fixing plate 5 and the protective strip 6 on the outside of the housing 2, the card slot can be protected; and the waterproof foam 4 can be used to waterproof; at the same time, the device is symmetrically arranged, and double-sided card insertion can be achieved through the card holders 3 on both sides.

[0036] Another embodiment of this utility model provides an electronic device, including an IC card reader module 1, a controller, a contactless card reader module, and an IC card anti-interference circuit as described above. For example, the electronic device is a POS machine with payment function and a contactless card reader module. When the POS machine needs to insert an IC card for payment, the contactless card reader module is turned off to avoid accidental triggering of the NFC function and resulting in misoperation.

[0037] The following are preferred embodiments of this utility model: Please refer to Figure 1An IC card anti-interference circuit is disclosed, applied to an electronic device. The electronic device includes an IC card reader module 1, a controller, and a contactless card reader module. The circuit includes a power supply module VDD, a signal transmitting module M1, and a signal receiving module M2. The first terminal of the signal transmitting module M1 is connected to the power supply module VDD, and the second terminal of the signal transmitting module M1 is grounded. The transmitting terminal of the signal transmitting module M1 is connected to the input terminal of the signal receiving module M2. The first terminal of the signal receiving module M2 is connected to the power supply module VDD, and the second terminal of the signal receiving module M2 is grounded. The output terminal of the signal receiving module M2 is used to connect to the controller. Depending on the component selection of the signal transmitting module M1 and the signal receiving module M2, the power supply module VDD can output the same or different voltages to power the signal transmitting module M1 and the signal receiving module M2 respectively.

[0038] The signal receiving module M2 is used to receive the signal sent by the signal transmitting module M1 when no IC card is inserted in the IC card reading module 1, so as to enable the output terminal of the signal receiving module M2 to output an open signal. The controller is used to control the contactless card reading module to open when the open signal is received. The signal receiving module M2 is also used to disconnect the signal sent by the receiving signal transmitting module M1 when an IC card is inserted into the IC card reading module 1, so as to enable the output terminal of the signal receiving module M2 to output a shutdown signal. The controller is used to control the contactless card reading module to shut down when the shutdown signal is received.

[0039] like Figure 1 As shown, the signal transmitting module M1 includes a photoelectric transmitting component, and the signal receiving module M2 includes a photoelectric receiving component; the photoelectric receiving component is used to receive the light signal emitted by the photoelectric transmitting component; the output terminal of the photoelectric receiving component is used to connect to the controller.

[0040] Please refer to Figure 2 The photoelectric emitting component includes a light-emitting diode U1 and a first voltage regulator unit; in this embodiment, the first voltage regulator unit is a first resistor R1; the first end of the first resistor R1 is connected to the power module VDD1, the second end of the first resistor R1 is connected to the positive terminal of the light-emitting diode U1, and the negative terminal of the light-emitting diode U1 is grounded.

[0041] The photoelectric receiving component includes a phototransistor U2, a second voltage regulator unit, and a filter unit; in this embodiment, the filter unit is a first capacitor C1, and the second voltage regulator unit is a second resistor R2. The first end of the second resistor R2 is connected to the power module VDD2, and the second end of the second resistor R2 is connected to the collector of the phototransistor U2 and the first end of the first capacitor C1, and is used to connect to the controller (DET); the gate of the phototransistor U2 is used to receive the light signal emitted by the photoelectric emitting component, and the emitter is grounded; the second end of the first capacitor C1 is grounded.

[0042] The specific working principle is as follows: When no IC card is inserted, the light signal emitted by LED U1 can be received by phototransistor U2. At this time, phototransistor U2 is turned on, and power module VDD2 is grounded through phototransistor U2. At this time, the output terminal (DET) is low level, and the NFC function can be turned on.

[0043] When an IC card is inserted, the light signal emitted by LED U1 cannot be received by phototransistor U2. At this time, phototransistor U2 is disconnected, and power module VDD2 is connected to the output terminal (DET) to output a high level, thereby triggering the controller (MCU) to turn off the NFC function to avoid interference between the two.

[0044] Please refer to Figures 3 through 4. Figure 5 This embodiment also provides an IC card anti-interference device, including a housing 2, an IC card reader module 1, a card holder 3, waterproof foam 4, a fixing plate 5, a protective strip 6, and the aforementioned IC card anti-interference circuit; the IC card anti-interference circuit can be disposed inside the housing 2 and connected to the controller through pins, sockets, and other structures. The card holder 3, waterproof foam 4, and fixing plate 5 are symmetrically arranged on both sides of the housing 2 in the thickness direction; meanwhile, the protective strip 6 is disposed on the outer periphery of the housing 2.

[0045] Signal transmitting module M1 and signal receiving module M2 are positioned opposite each other within IC card reader module 1; when an IC card is inserted into IC card reader module 1, signal transmission between signal transmitting module M1 and signal receiving module M2 is blocked. For example, signal transmitting module M1 and signal receiving module M2 can be positioned on the top, bottom, left, or right sides of housing 2.

[0046] This embodiment also provides an electronic device, including an IC card reader module 1, a controller, a contactless card reader module, and an IC card anti-interference circuit as described above. For example, the electronic device is a POS machine with payment function and a contactless card reader module. When the POS machine needs to insert an IC card for payment, the contactless card reader module is turned off to avoid accidental triggering of the NFC function and resulting in misoperation.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An IC card anti-interference circuit, characterized in that, Applied to electronic devices, the electronic devices include an IC card reader module, a controller, and a contactless card reader module, the circuit including: Power supply module, signal transmitting module, and signal receiving module; The first end of the signal transmitting module is connected to the power supply module, the second end of the signal transmitting module is grounded, and the transmitting end of the signal transmitting module is connected to the input end of the signal receiving module. The first end of the signal receiving module is connected to the power supply module, the second end of the signal receiving module is grounded, and the output end of the signal receiving module is used to connect to the controller. The signal receiving module is used to receive the signal sent by the signal transmitting module when no IC card is inserted into the IC card reader module, so as to enable the output terminal of the signal receiving module to output an open signal. The controller is used to control the contactless card reader module to open when the open signal is received. The signal receiving module is also used to disconnect the reception of signals sent by the signal transmitting module when an IC card is inserted into the IC card reader module, so as to enable the output terminal of the signal receiving module to output a shutdown signal. The controller is used to control the contactless card reader module to shut down when it receives the shutdown signal.

2. The IC card anti-interference circuit according to claim 1, characterized in that, The signal transmitting module includes a photoelectric transmitting component, and the signal receiving module includes a photoelectric receiving component; The photoelectric receiving component is used to receive the light signal emitted by the photoelectric transmitting component; The output terminal of the photoelectric receiving component is used to connect to the controller.

3. The IC card anti-interference circuit according to claim 2, characterized in that, The photoelectric emitting component includes a light-emitting diode and a first voltage regulator unit; The first terminal of the first voltage regulator unit is connected to the power supply module, the second terminal of the first voltage regulator unit is connected to the positive terminal of the light-emitting diode, and the negative terminal of the light-emitting diode is grounded.

4. The IC card anti-interference circuit according to claim 3, characterized in that, The first voltage regulator unit includes a first resistor; The first end of the first resistor is connected to the power module, and the second end of the first resistor is connected to the positive terminal of the light-emitting diode.

5. The IC card anti-interference circuit according to claim 2, characterized in that, The photoelectric receiving component includes a phototransistor, a second voltage regulator unit, and a filter unit; The first end of the second voltage regulator unit is connected to the power module, and the second end of the second voltage regulator unit is connected to the collector of the phototransistor and the first end of the filter unit, respectively, and is used to connect to the controller. The gate of the phototransistor is used to receive the optical signal emitted by the photoelectric emitting component, and the emitter is grounded; The second terminal of the filter unit is grounded.

6. The IC card anti-interference circuit according to claim 5, characterized in that, The filtering unit includes a first capacitor; The first terminal of the first capacitor is connected to the collector of the phototransistor, and the second terminal is grounded.

7. The IC card anti-interference circuit according to claim 5, characterized in that, The second voltage regulator unit includes a second resistor; The first end of the second resistor is connected to the power module, and the second end of the second resistor is connected to the collector of the phototransistor.

8. An IC card anti-interference device, characterized in that, Includes an IC card reader module and an IC card anti-interference circuit as described in any one of claims 1-7; The signal transmitting module and the signal receiving module are disposed opposite to each other in the card slot of the IC card reader module; When an IC card is inserted into the card slot of the IC card reader module, it blocks the signal transmission between the signal transmitting module and the signal receiving module.

9. An IC card anti-interference device according to claim 8, characterized in that, Also includes: The housing contains the IC card reader module. The shell has symmetrically arranged card holders, waterproof foam and fixing plates on both sides in the thickness direction; A protective strip is provided on the outer periphery of the shell.

10. An electronic device, characterized in that, It includes an IC card reader module, a controller, a contactless card reader module, and an IC card anti-interference circuit as described in any one of claims 1-7.

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