A card-swipe electronic lock

Abstract

This utility model discloses a card-swipe electronic lock, comprising: a first switching circuit, a second switching circuit, an Nth switching circuit, a first induction coil, a second induction coil, an Nth induction coil, a control module, a card reader module, a power supply module, a power supply input node, and a ground node; the antenna terminal of the card reader module is connected to the input terminals of the first switching circuit, the second switching circuit, and the Nth switching circuit, respectively; the output terminal of the first switching circuit is connected to the first induction coil T1, the output terminal of the second switching circuit is connected to the second induction coil, and the output terminal of the Nth switching circuit is connected to the Nth induction coil; the control module is used to: determine the Mth induction coil through the feedback voltage of the GPIO port, control the corresponding Mth switching circuit to establish a communication connection between the antenna terminal of the card reader module and the Mth induction coil; and disconnect the other induction coils from the antenna terminal of the card reader module; this utility model is mainly used in the field of smart lock technology.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, specifically to a card-swipe electronic lock. Background Technology

[0002] In existing technologies, the size of the induction coil in card-swipe electronic locks is fixed. This leads to poor overall sensing performance when dealing with IC cards of different sizes or virtual cards generated by mobile phones from different brands that support NFC. This manifests as inconsistent swiping distances, and in some cases, the locks fail to swipe at all. Therefore, the overall compatibility of card-swipe electronic locks in this field is currently poor, and an industry-wide solution is urgently needed. Utility Model Content

[0003] This utility model provides a card-swipe electronic lock to solve one or more technical problems existing in the prior art, and at least provides a beneficial option or creates conditions.

[0004] This utility model provides a card-swipe electronic lock, including: a first switching circuit, a second switching circuit, ..., an Nth switching circuit, a first induction coil, a second induction coil, ..., an Nth induction coil, a control module, a card reading module, a power supply module, a power supply input node, and a ground node; The power module is connected to the power input node and the ground node respectively. The power module is used to convert the input voltage between the power input node and the ground node into the output voltage of the adapter control module and the card reader module. The control module is connected to the card reader module. The antenna terminal of the card reader module is connected to the input terminals of the first switching circuit, the second switching circuit, ..., and the Nth switching circuit, respectively; the output terminal of the first switching circuit is connected to the first induction coil T1, the output terminal of the second switching circuit is connected to the second induction coil, ..., and the output terminal of the Nth switching circuit is connected to the Nth induction coil; the first GPIO port of the control module is connected to the control terminal of the first switching circuit, the second GPIO port of the control module is connected to the control terminal of the second switching circuit, ..., and the Nth GPIO port of the control module is connected to the control terminal of the Nth switching circuit. The control module is used to: determine the Mth induction coil through the feedback voltage of the 1st GPIO port, the 2nd GPIO port, ..., and the Nth GPIO port; control the corresponding Mth switching circuit to connect the antenna terminal of the card reader module to the Mth induction coil for communication; and control other switching circuits to disconnect the other induction coils from the antenna terminal of the card reader module; where N = 1, 2, ..., K; K is the number of induction coils, and K ≥ 2.

[0005] Furthermore, the number of induction coils is 5.

[0006] Furthermore, the first switching circuit includes: a first current-limiting resistor, a first filter capacitor, a first switching transistor, and a second current-limiting resistor; One end of the first current-limiting resistor is connected to the first induction coil, and the other end of the first current-limiting resistor is connected to one end of the first filter capacitor and one end of the switching side of the first switching transistor, and the other end of the switching side of the first switching transistor is connected to the antenna end of the card reader module. The control terminal of the first switching transistor is connected to one end of the second current-limiting resistor, and the other end of the second current-limiting resistor is connected to the first GPIO port of the control module; the other end of the first filter capacitor is connected to the ground node.

[0007] Furthermore, the first switching circuit also includes a second filter capacitor, one end of which is connected to one end of the first filter capacitor, and the other end of which is connected to the ground node.

[0008] Furthermore, the power supply module includes: a voltage regulator chip, a first voltage regulator diode, a second voltage regulator diode, a third capacitor, a fifth capacitor, and a power supply output node; the input terminal of the voltage regulator chip is connected to the power supply input node, the cathode of the first voltage regulator diode, one end of the third capacitor, and one end of the fourth capacitor, respectively; the output terminal of the voltage regulator chip is connected to one end of the fifth capacitor, the cathode of the second voltage regulator diode, and the power supply output node, respectively; the ground terminal of the voltage regulator chip, the anode of the first voltage regulator diode, the anode of the second voltage regulator diode, the other end of the third capacitor, the other end of the fourth capacitor, and the other end of the fifth capacitor are respectively connected to the ground node.

[0009] Furthermore, the power module also includes a fourth capacitor and a sixth capacitor; one end of the fourth capacitor is connected to the power input node, and the other end of the fourth capacitor is connected to the ground node; one end of the sixth capacitor is connected to the power output node, and the other end of the sixth capacitor is connected to the ground node.

[0010] Furthermore, the card-swipe electronic lock also includes a motor drive module, which is connected to the control module and the drive motor of the external actuator. The motor drive module is controlled by the control module to drive the external actuator to operate.

[0011] Furthermore, the motor drive module includes: a drive chip, a first resistor, a second resistor, a first capacitor, and a second capacitor; the first input terminal of the drive chip is connected to one end of the first resistor, and the other end of the first resistor is connected to the first output terminal of the control module. The second input terminal of the driver chip is connected to one end of the second resistor, and the other end of the first resistor is connected to the second output terminal of the control module; the power supply terminal of the driver chip is connected to one end of the first capacitor and the power supply input node respectively; the first output terminal of the driver chip is connected to one end of the second capacitor and one end of the external actuator motor; the second output terminal of the driver chip is connected to the other end of the second capacitor and the other end of the external actuator motor respectively; the ground terminal of the driver chip and the other end of the first capacitor are connected to the ground node respectively.

[0012] Furthermore, the control module is a minimum control system with a microcontroller as its core.

[0013] Furthermore, the first switching transistor is a MOSFET.

[0014] This invention has at least the following beneficial effects: By setting up multiple switching circuits and multiple induction coils, the control module determines the most suitable induction coil from among the multiple induction coils, and the switching circuit connects the most suitable induction coil to the card reader module. Communication with the user's card is achieved through the most suitable induction coil. This solves the technical problem of poor card-swiping compatibility in related technologies. This invention is mainly used in the field of smart lock technology. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0016] Figure 1 This is a schematic diagram of the module connection structure of the card-swipe electronic lock; Figure 2 This is a schematic diagram of the circuit connection structure of the card-swipe electronic lock; Figure 3 This is a schematic diagram of the circuit connection structure of the motor drive module. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0019] First, let's analyze some of the terms that appear.

[0020] GPIO, short for General-Purpose Input / Output, is a programmable hardware interface whose function is not fixed and whose operating mode can be controlled by software.

[0021] A microcontroller is a chip that integrates all the core components of a microcomputer. It's like a super-miniature computer packaged in a single chip, specifically designed to control and execute specific tasks.

[0022] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the module connection structure of the card-swipe electronic lock. Figure 2 This is a schematic diagram of the circuit connection structure of a card-swipe electronic lock. Figure 3 This is a schematic diagram of the circuit connection structure of the motor drive module.

[0023] This application provides a card-swipe electronic lock, including: a first switching circuit, a second switching circuit, ..., an Nth switching circuit, a first induction coil T1, a second induction coil T2, ..., an Nth induction coil, a control module 200, a card reader module 100, a power supply module, a power supply input node VCC, and a ground node.

[0024] The power module is connected to the power input node VCC and the ground node respectively. The power module is used to convert the input voltage between the power input node VCC and the ground node into the output voltage of the adapter control module 200 and the card reader module 100. The control module 200 is connected to the card reader module 100.

[0025] The antenna terminal ANT of the card reader module 100 is connected to the input terminals of the first switching circuit, the second switching circuit, ..., and the Nth switching circuit, respectively; the output terminal of the first switching circuit is connected to the first induction coil T1, the output terminal of the second switching circuit is connected to the second induction coil T2, ..., and the output terminal of the Nth switching circuit is connected to the Nth induction coil; the first GPIO port PA3 of the control module 200 is connected to the control terminal of the first switching circuit, the second GPIO port PA5 of the control module 200 is connected to the control terminal of the second switching circuit, ..., and the Nth GPIO port of the control module 200 is connected to the control terminal of the Nth switching circuit.

[0026] The control module 200 is used to: determine the Mth induction coil through the feedback voltage of the first GPIO port PA3, the second GPIO port PA5, ..., and the Nth GPIO port; control the corresponding Mth switching circuit to connect the antenna terminal ANT of the card reader module 100 to the Mth induction coil; and control other switching circuits to disconnect the connection between other induction coils and the antenna terminal ANT of the card reader module 100.

[0027] Where N = 1, 2, ..., K; K is the number of induction coils, K ≥ 2.

[0028] In actual operation, induction coils are all located at the sensing positions. When a user needs to swipe their card, the card approaches the sensing position. The induction coil interacts with the user's card, causing the control module 200 to sense different voltages at its corresponding GPIO port. Since the compatibility between the user's card and the induction coil varies, when the compatibility is highest, the control module 200's corresponding GPIO port will receive the highest voltage intensity. At this point, the control module 200 considers that induction coil to be the most compatible. For ease of description, the most compatible induction coil is referred to as the Mth induction coil. After determining the Mth induction coil, the control module 200 can control all switching circuits to ensure that only the Mth induction coil communicates with the antenna terminal ANT of the card reader module 100, disconnecting the other induction coils from the antenna terminal ANT. Specifically, the Mth switching circuit remains on, while the other switching circuits are turned off.

[0029] This invention utilizes multiple switching circuits and multiple induction coils. A control module 200 determines the most suitable induction coil from among them, and the switching circuits connect this most suitable coil to the card reader module 100. Communication with the user's card is achieved through this most suitable induction coil. This solves the technical problem of poor card-swiping compatibility in related technologies.

[0030] For ease of explanation, this embodiment uses induction coil 5 as an example. In this case, the card-swipe electronic lock includes: a first switching circuit, a second switching circuit, a third switching circuit, a fourth switching circuit, a fifth switching circuit, a first induction coil T1, a second induction coil T2, a third induction coil T3, a fourth induction coil T4, and a fifth induction coil T5.

[0031] The antenna terminal ANT of the card reader module 100 is connected to the input terminals of the first, second, third, fourth, and fifth switching circuits, respectively. The output terminal of the first switching circuit is connected to the first induction coil T1, the output terminal of the second switching circuit is connected to the second induction coil T2, the output terminal of the third switching circuit is connected to the third induction coil T3, the output terminal of the fourth switching circuit is connected to the fourth induction coil T4, and the output terminal of the fifth switching circuit is connected to the fifth induction coil T5. The first GPIO port PA3 of the control module 200 is connected to the control terminal of the first switching circuit, the second GPIO port PA5 of the control module 200 is connected to the control terminal of the second switching circuit, the third GPIO port PA4 of the control module 200 is connected to the control terminal of the third switching circuit, the fourth GPIO port PA15 of the control module 200 is connected to the control terminal of the fourth switching circuit, and the fifth GPIO port PA6 of the control module 200 is connected to the control terminal of the fifth switching circuit.

[0032] The first switching circuit includes: a first current-limiting resistor R3, a first filter capacitor C7, a second filter capacitor C8, a first switching transistor Q1, and a second current-limiting resistor R8. One end of the first current-limiting resistor R3 is connected to the first induction coil T1, and the other end of the first current-limiting resistor R3 is connected to one end of the first filter capacitor C7 and one end of the switching side of the first switching transistor Q1. The other end of the switching side of the first switching transistor Q1 is connected to the antenna terminal ANT of the card reader module 100. The control terminal of the first switching transistor Q1 is connected to one end of the second current-limiting resistor R8, and the other end of the second current-limiting resistor R8 is connected to the first GPIO port PA3 of the control module 200. The other end of the first filter capacitor C7 is connected to a ground node; one end of the second filter capacitor C8 is connected to one end of the first filter capacitor C7, and the other end of the second filter capacitor C8 is connected to a ground node.

[0033] The second switching circuit includes: a third current-limiting resistor R4, a third filter capacitor C9, a fourth filter capacitor C10, a second switching transistor Q2, and the fourth current-limiting resistor R9. One end of the third current-limiting resistor R4 is connected to the second induction coil T2, and the other end of the third current-limiting resistor R4 is connected to one end of the third filter capacitor C9 and one end of the switching side of the second switching transistor Q2. The other end of the switching side of the second switching transistor Q2 is connected to the antenna terminal ANT of the card reader module 100. The control terminal of the second switching transistor Q2 is connected to one end of the fourth current-limiting resistor R9, and the other end of the fourth current-limiting resistor R9 is connected to the second GPIO port PA5 of the control module 200. The other end of the third filter capacitor C9 is connected to a ground node; one end of the fourth filter capacitor C10 is connected to one end of the third filter capacitor C9, and the other end of the fourth filter capacitor C10 is connected to a ground node.

[0034] The third switching circuit includes: a fifth current-limiting resistor R5, a fifth filter capacitor C11, a sixth filter capacitor C12, a third switching transistor Q3, and a sixth current-limiting resistor R10. One end of the fifth current-limiting resistor R5 is connected to the third induction coil T3, and the other end of the fifth current-limiting resistor R5 is connected to one end of the fifth filter capacitor C11 and one end of the switching side of the third switching transistor Q3. The other end of the switching side of the third switching transistor Q3 is connected to the antenna terminal ANT of the card reader module 100. The control terminal of the third switching transistor Q3 is connected to one end of the sixth current-limiting resistor R10, and the other end of the sixth current-limiting resistor R10 is connected to the third GPIO port PA4 of the control module 200. The other end of the fifth filter capacitor C11 is connected to the ground node; one end of the sixth filter capacitor C12 is connected to one end of the fifth filter capacitor C11, and the other end of the sixth filter capacitor C12 is connected to the ground node.

[0035] The fourth switching circuit includes: a seventh current-limiting resistor R6, a seventh filter capacitor C13, an eighth filter capacitor C14, a fourth switch Q4, and an eighth current-limiting resistor R11. One end of the seventh current-limiting resistor R6 is connected to the fourth induction coil T4, and the other end of the seventh current-limiting resistor R6 is connected to one end of the seventh filter capacitor C13 and one end of the switching side of the fourth switch Q4. The other end of the switching side of the fourth switch Q4 is connected to the antenna terminal ANT of the card reader module 100. The control terminal of the fourth switch Q4 is connected to one end of the eighth current-limiting resistor R11, and the other end of the eighth current-limiting resistor R11 is connected to the fourth GPIO port PA15 of the control module 200. The other end of the seventh filter capacitor C13 is connected to the ground node; one end of the eighth filter capacitor C14 is connected to one end of the seventh filter capacitor C13, and the other end of the eighth filter capacitor C14 is connected to the ground node.

[0036] The fifth switching circuit includes: a ninth current-limiting resistor R7, a ninth filter capacitor C15, a tenth filter capacitor C16, a fifth switching transistor Q5, and a tenth current-limiting resistor R12. One end of the ninth current-limiting resistor R7 is connected to the fifth induction coil T5, and the other end of the ninth current-limiting resistor R7 is connected to one end of the ninth filter capacitor C15 and one end of the switching side of the fifth switching transistor Q5. The other end of the switching side of the fifth switching transistor Q5 is connected to the antenna terminal ANT of the card reader module 100. The control terminal of the fifth switching transistor Q5 is connected to one end of the tenth current-limiting resistor R12, and the other end of the tenth current-limiting resistor R12 is connected to the fifth GPIO port PA6 of the control module 200. The other end of the ninth filter capacitor C15 is connected to the ground node; one end of the tenth filter capacitor C16 is connected to one end of the ninth filter capacitor C15, and the other end of the tenth filter capacitor C16 is connected to the ground node.

[0037] In some further specific embodiments, the first switch Q1 is a MOSFET, the second switch Q2 is a MOSFET, the third switch Q3 is a MOSFET, the fourth switch Q4 is a MOSFET, and the fifth switch Q5 is a MOSFET.

[0038] The power supply module supplies power to the control module 200 and the motor drive module 300. In some further embodiments, the power supply module includes: a voltage regulator chip U1, a first voltage regulator diode D1, a second voltage regulator diode D2, a third capacitor C3, a fifth capacitor C5, and a power output node VDD_3.3V. The input terminal of the voltage regulator chip U1 is connected to the power input node VCC, the cathode of the first voltage regulator diode D1, one end of the third capacitor C3, and one end of the fourth capacitor C4, respectively. The output terminal of the voltage regulator chip U1 is connected to one end of the fifth capacitor C5, the cathode of the second voltage regulator diode D2, and the power output node VDD_3.3V, respectively. The ground terminal of the voltage regulator chip U1, the anode of the first voltage regulator diode D1, the anode of the second voltage regulator diode D2, the other end of the third capacitor C3, and the other end of the fifth capacitor C5 are connected to the ground node, respectively. In this specific embodiment, the voltage regulator chip U1 is model TC1185.

[0039] To prevent interference to the power module's input, in some further embodiments, the power module also includes a fourth capacitor C4; one end of the fourth capacitor C4 is connected to the power input node VCC, and the other end of the fourth capacitor C4 is connected to the ground node. Adding the fourth capacitor C4 further enhances the power module's input anti-interference capability.

[0040] To enhance the output stability of the power module, in some further embodiments, the power module further includes a sixth capacitor C6; one end of the sixth capacitor C6 is connected to the power output node VDD_3.3V, and the other end of the sixth capacitor C6 is connected to the ground node. Adding the sixth capacitor C6 further enhances the output stability of the power module.

[0041] The card-swipe electronic lock also includes a motor drive module 300. The motor drive module 300 is connected to the control module 200 and the drive motor M1 of an external actuator. The motor drive module 300 is controlled by the control module 200 to drive the external actuator. The circuit structure of the motor drive module 300 includes: a drive chip U2, a first resistor R1, a second resistor R2, a first capacitor C1, and a second capacitor C2. The first input terminal of the drive chip U2 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the first output terminal PA13 of the control module 200. The second input terminal of the drive chip U2 is connected to one end of the second resistor R2, and the other end of the first resistor R1 is connected to the second output terminal PA11 of the control module 200. The power supply terminal of the drive chip U2 is connected to one end of the first capacitor C1 and the power supply input node VCC. The first output terminal PA13 of the drive chip U2 is connected to one end of the second capacitor C2 and one end of the external actuator. The second output terminal PA11 of the driver chip U2 is connected to the other end of the second capacitor C2 and the other end of the external actuator motor, respectively; the ground terminal of the driver chip U2 and the other end of the first capacitor C1 are connected to the ground node, respectively. The model of the driver chip U2 is MX113H.

[0042] The control module 200 is a minimum control system based on a microcontroller. The microcontroller is an STM32L051C8T6. The card reader module 100 includes a card reader chip and its peripheral circuitry, wherein the card reader chip is a WS1850T.

[0043] Although the description of this application has been quite detailed and particularly focused on several described embodiments, it is not intended to limit itself to any of these details or embodiments or any particular embodiment. Rather, it should be considered as effectively covering the intended scope of this application by referring to the appended claims and taking into account the broad possible interpretations of these claims provided by the prior art. Furthermore, the foregoing description of this application with respect to embodiments foreseeable by the inventor is intended to provide a useful description, and non-substantial modifications to this application that have not yet been foreseen may still represent equivalent modifications.

Claims

1. A card-swipe electronic lock, characterized in that, include: The first switching circuit, the second switching circuit, ..., the Nth switching circuit, the first induction coil, the second induction coil, ..., the Nth induction coil, the control module, the card reader module, the power supply module, the power supply input node and the ground node; The power module is connected to the power input node and the ground node respectively. The power module is used to convert the input voltage between the power input node and the ground node into the output voltage of the adapter control module and the card reader module. The control module is connected to the card reader module. The antenna terminal of the card reader module is connected to the input terminals of the first switching circuit, the second switching circuit, ..., and the Nth switching circuit, respectively; the output terminal of the first switching circuit is connected to the first induction coil T1, the output terminal of the second switching circuit is connected to the second induction coil, ..., and the output terminal of the Nth switching circuit is connected to the Nth induction coil; the first GPIO port of the control module is connected to the control terminal of the first switching circuit, the second GPIO port of the control module is connected to the control terminal of the second switching circuit, ..., and the Nth GPIO port of the control module is connected to the control terminal of the Nth switching circuit. The control module is used to: determine the Mth induction coil through the feedback voltage of the 1st GPIO port, the 2nd GPIO port, ..., and the Nth GPIO port; control the corresponding Mth switching circuit to connect the antenna terminal of the card reader module to the Mth induction coil for communication; and control other switching circuits to disconnect the other induction coils from the antenna terminal of the card reader module; where N = 1, 2, ..., K; K is the number of induction coils, and K ≥ 2.

2. The card-swipe electronic lock according to claim 1, characterized in that, The number of induction coils is 5.

3. The card-swipe electronic lock according to claim 1, characterized in that, The first switching circuit includes: a first current-limiting resistor, a first filter capacitor, a first switching transistor, and a second current-limiting resistor; One end of the first current-limiting resistor is connected to the first induction coil, and the other end of the first current-limiting resistor is connected to one end of the first filter capacitor and one end of the switching side of the first switching transistor, and the other end of the switching side of the first switching transistor is connected to the antenna end of the card reader module. The control terminal of the first switching transistor is connected to one end of the second current-limiting resistor, and the other end of the second current-limiting resistor is connected to the first GPIO port of the control module; the other end of the first filter capacitor is connected to the ground node.

4. The card-swipe electronic lock according to claim 3, characterized in that, The first switching circuit further includes a second filter capacitor, one end of which is connected to one end of the first filter capacitor, and the other end of which is connected to the ground node.

5. The card-swipe electronic lock according to claim 1, characterized in that, The power supply module includes: a voltage regulator chip, a first voltage regulator diode, a second voltage regulator diode, a third capacitor, a fifth capacitor, and a power supply output node; the input terminal of the voltage regulator chip is connected to the power supply input node, the cathode of the first voltage regulator diode, one end of the third capacitor, and one end of the fourth capacitor, respectively; the output terminal of the voltage regulator chip is connected to one end of the fifth capacitor, the cathode of the second voltage regulator diode, and the power supply output node, respectively; the ground terminal of the voltage regulator chip, the anode of the first voltage regulator diode, the anode of the second voltage regulator diode, the other end of the third capacitor, the other end of the fourth capacitor, and the other end of the fifth capacitor are respectively connected to the ground node.

6. A card-swipe electronic lock according to claim 5, characterized in that, The power module further includes a fourth capacitor and a sixth capacitor; one end of the fourth capacitor is connected to the power input node, and the other end of the fourth capacitor is connected to the ground node; one end of the sixth capacitor is connected to the power output node, and the other end of the sixth capacitor is connected to the ground node.

7. The card-swipe electronic lock according to claim 1, characterized in that, It also includes a motor drive module, which is connected to the control module and the drive motor of the external actuator. The motor drive module is controlled by the control module to drive the external actuator to move.

8. A card-swipe electronic lock according to claim 7, characterized in that, The motor drive module includes: a drive chip, a first resistor, a second resistor, a first capacitor, and a second capacitor; the first input terminal of the drive chip is connected to one end of the first resistor, and the other end of the first resistor is connected to the first output terminal of the control module. The second input terminal of the driver chip is connected to one end of the second resistor, and the other end of the first resistor is connected to the second output terminal of the control module; the power supply terminal of the driver chip is connected to one end of the first capacitor and the power supply input node respectively; the first output terminal of the driver chip is connected to one end of the second capacitor and one end of the external actuator motor; the second output terminal of the driver chip is connected to the other end of the second capacitor and the other end of the external actuator motor respectively; the ground terminal of the driver chip and the other end of the first capacitor are connected to the ground node respectively.

9. A card-swipe electronic lock according to claim 1, characterized in that, The control module is a minimal control system with a microcontroller as its core.

10. A card-swipe electronic lock according to claim 3, characterized in that, The first switching transistor is a MOSFET.

Images