TWI676729B - Passive electronic lock - Google Patents

Abstract

A passive electronic lock can receive electromagnetic waves emitted by an external electronic device as its power to drive the latching mechanism of the passive electronic lock for unlocking. At the same time, the external electronic device can send password information to the passive electronic lock for unlocking. The external electronic device can be the most commonly used smart phone or tablet computer, so that the user does not need to carry a key or a proximity card, and can directly perform operations such as unlocking or setting a password with the smart phone that he carries.

Description

Passive electronic lock

The present invention relates to an electronic lock device, and more particularly to a passive electronic lock driven by electromagnetic waves transmitted by an external device as electric power.

Locks are often used in daily life. Generally, locks are mostly mechanical. For example, the key is inserted into the lock hole to rotate and unlock. The teeth on the key will cooperate with the mechanism in the lock. When the tooth shape and number of teeth match the structure of the lock mechanism, the lock can be unlocked. In addition to mechanical locks, electronic locks have also recently been developed. Electric locks are used to unlock, for example, induction cards. When the information in the card matches the preset password in the lock, the lock itself will be unlocked by electric power. This active electronic lock must be powered by a power source.

At present, an electronic lock without power is also developed. A simple power generating mechanism is provided in the lock. When the user inserts the key, the power generation mechanism can be driven by the action of inserting the key or rotating the key, and then use the generated power to drive Electronic lock. However, this type of electromechanical hybrid electronic lock still requires users to carry and store the keys, which is quite inconvenient.

In view of this, the present invention provides a passive electronic lock that can receive electromagnetic waves emitted by an external electronic device as its power to drive the latching mechanism of the passive electronic lock for unlocking, and the external electronic device can also send password information to the passive type. Unlock in electronic lock. The external electronic device can be the most commonly used smart phone or tablet computer, so that the user does not need to carry a key or a proximity card, and can directly perform operations such as unlocking or setting a password with the smart phone that he carries.

An embodiment of the passive electronic lock of the present invention includes a latch, a drive module, a power storage module, a power output control module, a control module, a first antenna module, and a second Antenna module. The latch can be moved between a first position and a second position, wherein the first position corresponds to the locked state of the passive electronic lock, and the second position corresponds to the unlocked state of the passive electronic lock. The drive module can be connected to the latch, the drive latch can be moved between the first position and the second position, the power storage module can store electrical energy, and the power output control module can be electrically connected to the power storage module and the drive module. The control module can be electrically connected to the power output control module, the storage module can be connected to the control module for information, and can store at least a first password. The first antenna module can be electrically connected to the power storage module. The second antenna module can be electrically connected to the storage module. The first antenna module receives electromagnetic waves emitted from an external device and converts them into current to store electric energy in the power storage module. The second antenna group receives electromagnetic waves and control signals emitted by the external device and converts them into electrical energy supply. To the control module, the control signal is transmitted to the control module. When the control signal includes a password information, the control module compares the password information with the first password stored in the storage module. If they match, the control module controls the power output control module, so that the electric energy stored in the power storage module is supplied to the drive module, and the latch is moved from the first position to the second position.

In another embodiment, the passive electronic lock of the present invention further includes a rectifier module electrically connected to the first antenna group and the power storage module.

In another embodiment, the first antenna group includes a single antenna group.

In another embodiment, the first antenna group includes a dual antenna group.

In another embodiment, the power storage module includes a power storage element.

In another embodiment, the driving module includes a driving device and a driving member. The driving member is connected to the latch member, and the driving device drives the driving member to move the latch member between the first position and the second position.

In another embodiment, the storage module includes a programmable read-only memory.

In another embodiment, when the control signal includes a reset signal, the control module erases the first password in the storage module.

In another embodiment, when the control signal includes a setting signal, the storage unit receives and stores a second password from the external device.

In another embodiment, the passive electronic lock of the present invention further includes a display module electrically connected to the control module. The display module includes a first display mode, a second display mode, and a third display. Mode, the first display mode corresponds to the unlocked state, the second display mode corresponds to a state where the password information is incorrect compared to the first password, and the third mode corresponds to a second password replacing the first The status of a password.

The passive electronic lock of the present invention can use electromagnetic waves emitted by the portable electronic device to carry power to carry out operations such as unlocking, locking or resetting the password. The passive electronic lock itself does not need to be provided with a power source and does not consume electricity. The problem of having to replace the power supply after use as much as possible. In addition, the user does not need to carry a key or a sensor, and only needs to use a portable electronic device to carry the lock, which is quite convenient.

Please refer to FIG. 1, which shows an embodiment of a passive electronic lock according to the present invention. The passive electronic lock 100 of the present invention includes a latch 10, a drive module 20, a power storage module 30, a power output control module 40, a control module 50, a storage module 60, and a first The antenna module 70 and a second antenna module 80.

The latch 10 can be moved between a first position and a second position, wherein the first position corresponds to the locked state of the passive electronic lock, and the second position corresponds to the unlocked state of the passive electronic lock. The driving module 20 is connected to the latch member and drives the latch member to move between the first position and the second position. In this embodiment, the driving module 20 includes a driving member 21 and a driving device. The driving device may be a solenoid valve. In another embodiment, the driving device may be an electric motor. The driving member 21 is connected to the latching member 10 and is connected to the output shaft of the electric motor 22. The rotation of the output shaft of the electric motor can drive the driving member 21 to rotate and drive the latching member 10 between the first position and the second position. mobile.

The power storage module 30 can store electrical energy. In this embodiment, the power storage module 30 can include a power storage element, and the power storage element can be, for example, a capacitor element that stores power in the form of a potential difference.

The power output control module 40 is electrically connected to the power storage module 30 and the driving module 20. The power output control module 40 may be a control circuit composed of a transistor, for example, a control circuit composed of a field effect transistor (FET), especially a metal oxide semiconductor field effect transistor (MOFET). Next, the power storage module 30 and the driving module 20 are turned on, so that the power of the power storage module 60 is supplied to the driving module 20. In addition, since the power output control module 40 is connected to the drive module 20, that is, the power output control module 40 is connected to the driving device, such as the electric motor or solenoid valve power output control module 40 described above, the power of the power storage module 60 is It is supplied to an electric motor or a solenoid valve to rotate a rotating shaft of the electric motor or to move a valve stem of the solenoid valve to rotate or move the latch 10 to unlock. The locking action can be performed manually by the user. For example, the user directly pushes the latch 10 from the second position to the first position with his hand to complete the lock. When the lock is unlocked, the latch 10 is driven by the above electronic driving method. Move from the first position to the second position.

The control module 50 is electrically connected to the power output control module 40, and the storage module 60 is connected to the control module 50 and can store at least a first password. The control module 50 can store and store password information entered by the user. The first password stored in the module 60 is compared. When the password information matches the first password, the control module 50 turns on the transistor of the power output control module 40, and the power of the power storage module 30 is supplied to The driving module 20 moves the lock fastener 10 to unlock. In this embodiment, the storage module 60 can store multiple sets of passwords, that is, the passive electronic lock of the present invention can be used by a large number of users, and each user can set his own password and store it in the storage module 60 When unlocking, each user can use the mobile phone to enter the password set by himself to unlock. In another embodiment, a user may store multiple sets of passwords at the same time, and the password information entered must be consistent with these multiple sets of passwords to unlock.

The first antenna module 70 is electrically connected to the power storage module 30. The first antenna module 70 receives an electromagnetic wave emitted from an external device E, and converts it into a current to store electric energy in the power storage module 60. The external device E may be a smart phone, a tablet computer, or a sensor, and transmits signals and exchanges information with the passive electronic lock 100 using a near field communication (NFC) protocol. The first antenna module 70 may be a coil antenna, and generates an electric current on the first antenna module 70 in an electromagnetic induction manner, and stores electric energy in a capacitor of the power storage module 60.

The second antenna module 80 is electrically connected to the storage module 60. The second antenna group 80 receives the electromagnetic waves and control signals emitted by the external device E, and converts them into electrical energy to supply to the control module 50. The control signals are transmitted to Control module 50. The storage module 60 may include a programmable read-only memory, such as an EEPROM, which can erase information stored in the memory under specific physical (ultraviolet light) or voltage conditions and store new information. The control module 50 may include an analog / digital conversion element, which converts the analog signal transmitted by the external device E into a digital signal for the microprocessor of the control module 50 to perform data processing.

The control signal may include an unlock signal, a reset signal, and a set signal. When the control signal includes an unlock signal, the control module 50 compares the password information entered by the user with the first password stored in the storage module 60. If the password information matches the first password, the control module 50 controls the power The output control module 40 turns on the switching elements or circuits in the power output control module 40, so that the electric energy stored in the power storage module 30 is supplied to the drive module 20, and the latch 10 is moved from the first position. Move to the second position to unlock.

The passive electronic lock 100 of the present invention further includes a rectifier module 90 electrically connected to the first antenna group 70 and the power storage module 30. The rectifying module 90 converts an alternating current generated by the first antenna module 70 into a direct current. Please refer to FIG. 2, which illustrates an embodiment of the first antenna module 70. In this embodiment, the first antenna module 70 is a single antenna group, and the rectifier module 90 may include a diode. By using its forward bias conduction and reverse bias cutoff characteristics, the AC current can be adjusted. Perform half-wave rectification. In addition, please refer to FIG. 3, which illustrates another embodiment of the first antenna module 70. In this embodiment, the first antenna module 70 is a dual antenna group, and the rectifier module 90 may include two diodes and perform a full tap with a center tap or a Graetz bridge. Wave rectification, or an antenna group 71 in a dual antenna group in series with an inverter circuit, and then in parallel with another antenna group 72 in a diode, can also perform full wave rectification.

The passive electronic lock 100 of the present invention further includes a display module 110 electrically connected to the control module 30, and the display module 110 can display the related status of the passive electronic lock 100. In this embodiment, the display module 110 may include a light emitting diode, and the control module 30 may correspond to different states of the passive electronic lock 100, so that the light emitting diode generates different light emitting modes, such as intermittent flashing, All on or off.

Please refer to FIG. 4, which illustrates the operation flow of the passive electronic lock of the present invention.

In step S1, it is determined whether an external device E is approaching. For example, it is determined whether a portable device with a near field communication (NFC) protocol is approaching. If an external device E is approaching, proceed to step S2. If no external device is approaching, then Continue to determine if an external device is approaching.

In step S2, after the external device E and the first antenna group 70 are electromagnetically induced, a current is generated on the first antenna module 70, and after being rectified by the rectifying module 90, the electric energy is stored in the power storage module 30. That is, the capacitive element of the power storage module 30 is charged, and then the process proceeds to step S3.

In step S3, the external device E sends a control signal and is received by the second antenna module 80. The control signal is transmitted to the control module 50, and then proceeds to step S4.

In step S4, the control module 50 determines whether the control signal is a reset signal, that is, whether the user presses the reset button on the external device E, and an application corresponding to the passive electronic lock 100 of the present invention can be installed in the external device E Program, this application generates an operation interface. The operation interface can provide an image of a character input button or an image of a reset button, so that the user can send different control signals through the operation interface. When the user presses the reset button, the reset signal is received by the second antenna module 80 and transmitted to the control module 50. If the control module 50 determines that a reset signal is received, it proceeds to step S5. The module 50 determines that the reset signal is not received, and then proceeds to step S6.

In step S5, the control module 50 clears the first password stored in the storage module 60 and restores the passive electronic lock 100 of the present invention to the state at the time of shipment, that is, clears all users of the passive electronic lock of the present invention. All settings made at 100 are restored to the initial state when shipped.

In step S6, the control module 50 determines whether the control signal is an unlocking signal. If it is determined that the control signal is an unlocking signal, it proceeds to step S7. If it is determined that the control signal is not an unlocking signal, it proceeds to step S8.

In step S7, the control module 50 compares whether the password information entered by the user matches the first password stored in the storage module 60. If the password information entered by the user matches the first password, the process proceeds to step S71. If the password information entered by the user does not match the first password, the process proceeds to step S72.

In step S71, the control module 50 determines whether the electric energy stored in the power storage module 30 has reached a level at which the drive module 20 can operate, such as whether the potential difference of the capacitor element has reached a reference value. If the stored electric energy has reached a level at which the driving module 20 can operate, the process proceeds to step S73.

In step S73, the control module 50 controls the power output control module 40 to activate the driving device 20 to move the latch 10 from the first position to the second position to unlock, and then ends the operation flow.

In step S72, the display module 110 displays a password error, for example, the light-emitting diode flashes intermittently, and then the operation process is ended.

In step S8, the control module 50 determines whether the control signal is a setting signal. When the control module 50 determines that the control signal is a setting signal, it proceeds to step S81.

In step S81, the control module 50 stores the second password entered by the user in the storage module 60, and then proceeds to step S82.

In step S82, the display module 110 displays a completed setting state, for example, the light emitting diode of the display module 110 continuously emits light for a predetermined time and then turns off for a predetermined time, and continuously lights for a predetermined time, for example, turns off after 5 seconds of continuous lighting. 1 second, and then light continuously for 5 seconds.

The display module 110 may include a first display mode, a second display mode, and a third display mode. The first display mode corresponds to an unlocked state, and the second display mode corresponds to the password information compared to the first display mode. The password is in an error state. The third mode corresponds to a state in which a second password is set and stored, and the third display mode is entered each time the password is set and stored. Corresponding to the first display mode, the second display mode, and the third display mode, the display module 110 may have different display states. For example, the first display mode may be continuous lighting for a predetermined period of time and then turned off, for example, continuous lighting for 5 seconds and then turned off The second mode may be intermittent blinking, and the third mode may be continuous light emission for a certain time, and then turn off for a predetermined time, and then continue to light for several times.

Please refer to FIG. 5 and FIG. 6, which are schematic diagrams showing the latch 10 and the driving module 20 of the passive electronic lock 100 of the present invention in a locked state and an unlocked state, respectively. The driving member 21 of the driving module 20 includes a swing arm 212, a rotating shaft 213, and a clip 214. The rotating shaft 213 is connected to the output shaft of the electric motor 22. The swing arm 213 and the clip 214 are both connected to the rotating shaft 213. The swing arm 212 extends radially from the rotation shaft 213, and the side of the swing arm 212 abuts against the protruding arm 11 of the latch 10, and the buckle 214 also extends radially from the rotation shaft 213 and is at an appropriate angle from the swing arm 213 distance. As shown in FIG. 5, when the latch 10 is in the first position, that is, when the passive electronic lock 100 of the present invention is in the locked state, the latch 10 is sunk to the bottom of the recess of the body of the passive electronic lock 100, and the latch The protruding arm 11 of the lock member 10 pushes the swing arm 213 downward. At this time, the latching member 214 is engaged with the protruding arm 11 of the latching member 10 to position the latching member 10 at the bottom of the recess. As shown in FIG. 6, when the lock is unlocked, the output shaft of the electric motor rotates the rotating shaft of the driving member 21 counterclockwise, and the swing arm 212 pushes the protruding arm 11 of the latch 10 to move the latch 10 upward from the recess to the second position. At the same time, the latching member 214 releases the engagement with the latching member 10, so that the passive electronic lock 100 of the present invention is in an unlocked state.

The passive electronic lock 100 of the present invention can use electromagnetic waves emitted by the portable electronic device to carry power to unlock, lock or reset the password. The passive electronic lock 100 itself does not need to be set with a power source. The problem of having to replace the power supply after the battery is exhausted. In addition, the user does not need to carry a key or a sensor, and only needs to use a portable electronic device to carry the lock, which is quite convenient. In addition, the passive electronic lock 100 of the present invention can store multiple array passwords, which can be used by multiple users, or one user can set multiple sets of passwords. Therefore, the passive electronic lock 100 of the present invention can have various applications.

However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, All are still within the scope of the invention patent.

10‧‧‧ Latch
11‧‧‧ boom
20‧‧‧Driver Module
21‧‧‧Driver
30‧‧‧Power Storage Module
40‧‧‧Power output control module
50‧‧‧control module
60‧‧‧Storage Module
70‧‧‧The first antenna module
71, 72‧‧‧ Antenna Group
80‧‧‧Second antenna module
90‧‧‧ Rectifier Module
100‧‧‧ Passive electronic lock
110‧‧‧Display Module
212‧‧‧arm swing
213‧‧‧Shaft
214‧‧‧Snap fastener
E‧‧‧External device
S1-S8‧‧‧ steps
S71-S73‧‧‧step
S81-S82‧‧‧step

FIG. 1 is a system block diagram of an embodiment of a passive electronic lock according to the present invention.
FIG. 2 is a schematic diagram of a half-wave rectification implemented by a passive electronic lock of the present invention including a single group of antennas.
FIG. 3 is a schematic diagram of a full-wave rectification implemented by the passive electronic lock of the present invention including a dual-group antenna.
FIG. 4 is a flowchart of operating the passive electronic lock of the present invention.
FIG. 5 is a schematic view of a latch and a driving module of a passive electronic lock according to the present invention in a locked state.
FIG. 6 is a schematic diagram of a latch and a driving module of a passive electronic lock according to the present invention in an unlocked state.

Claims (9)

A passive electronic lock includes a latch member movable between a first position and a second position, wherein the first position corresponds to a locked state of the passive electronic lock, and the second position corresponds to An unlocked state of the passive electronic lock; a driving module including a driving device and a driving member, the driving member is connected to the latching member, the driving member includes a swing arm, a rotating shaft, and a latching member; The rotating shaft is connected to the output end of the driving device. The swing arm and the buckle are both connected to the rotating shaft and separated by an angular distance. The side of the swing arm abuts the latch, and the swing device is driven by the driving device. The arm swings to move the latch between the first position and the second position. When the latch is in the first position, the latch is engaged with the latch, and when the latch When the component is in the second position, the latch releases the latch; the power storage module can store electric energy; a power output control module is electrically connected to the power storage module and the driver Module; a control module, electrically connected to the Force output control module; a storage module, information connected to the control module, can store at least a first password; a first antenna module, electrically connected to the power storage module; and a second day Line module, electrically connected to the storage module; wherein the first antenna module receives electromagnetic waves emitted from an external device, and converts it into an electric current to store electric energy in the power storage module, the next day The line group receives the electromagnetic waves and control signals emitted by the external device, and converts them into electrical energy to supply the control module, and the control signal is transmitted to the control module. When the control signal includes a password information, the control module will The password information is compared with the first password stored in the storage module. If the password information matches the first password, the control module controls the power output control module to be stored in the power storage module. The electric power of the group is supplied to the driving module, so that the latch is moved from the first position to the second position; when the control signal includes a setting signal, the storage unit receives the signal from the outside Opposing a second password and the second password is stored. The passive electronic lock according to item 1 of the scope of patent application, further comprising a rectifier module, which is electrically connected to the first antenna group and the power storage module. The passive electronic lock according to item 2 of the scope of patent application, wherein the first antenna group includes a single antenna group. The passive electronic lock according to item 2 of the scope of patent application, wherein the first antenna group includes a dual antenna group. The passive electronic lock according to item 1 of the patent application scope, wherein the power storage module includes a power storage element. According to the passive electronic lock described in item 1 of the patent application scope, wherein the driving module includes a driving device and a driving member, the driving member is connected to the latch member, and the driving device drives the driving member to make the latch The piece moves between the first position and the second position. The passive electronic lock according to item 1 of the scope of patent application, wherein the storage module includes a programmable read-only memory. The passive electronic lock according to item 1 of the scope of patent application, wherein when the control signal includes a reset signal, the control module eliminates the first password in the storage module. The passive electronic lock according to item 1 of the scope of patent application, further comprising a display module electrically connected to the control module. The display module includes a first display mode, a second display mode, and a first display mode. Three display modes, the first display mode corresponds to the unlocked state, the second display mode corresponds to the password information compared to the state where the first password is wrong, and the third mode corresponds to the storage of a second password status.