CN111379471B

CN111379471B - Intelligent lock

Info

Publication number: CN111379471B
Application number: CN201811647870.2A
Authority: CN
Inventors: 孙朝辉; 张争龙
Original assignee: Zhejiang Uniview Technologies Co Ltd
Current assignee: Zhejiang Uniview Technologies Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2021-08-31
Anticipated expiration: 2038-12-29
Also published as: CN111379471A

Abstract

The invention provides an intelligent lock which comprises a load detection circuit, a switch circuit, a power supply circuit and a power supply circuit, wherein the power supply circuit, the switch circuit and the power supply circuit are sequentially and electrically connected, and the load detection circuit is electrically connected with the switch circuit and the power supply circuit; the load detection circuit is used for detecting input current input to the power supply circuit and outputting a first power-off instruction to the switch circuit when the input current is greater than a preset first threshold value or less than a preset second threshold value; the switch circuit is used for responding to a first power-off command and cutting off. Through setting up load detection circuit, in case power supply circuit and power disconnection or by the short circuit, load detection circuit will export first outage instruction to switch circuit so that switch circuit ends for power supply circuit stops to supply power for load detection circuit, thereby can effectively prevent that the thief from destroying intelligent lock power through the short circuit, has avoided the whole paralysis of lock or the situation of being opened by the technique.

Description

Intelligent lock

Technical Field

The invention relates to the technical field of locks, in particular to an intelligent lock.

Background

The appearance of intelligent lock has brought huge convenience for people's life, and simultaneously, the user has also proposed higher requirement to its security. Besides the firmness of a common door lock, the intelligent door lock also has an intelligent alarm function, which is an important aspect for improving the safety of the intelligent door lock. The intelligent lock generally includes the front panel that is located the door outside, is located the lock body in the door and is located the rear panel in the door, and the front panel that is located outdoors is the part that first dashes when breaking open in the face of violence, if can receive when the violence is disassembled to surrounding environment and user to send alarm information at the front panel, can further improve the security of intelligent lock, maintain user's property and personal safety.

Among the prior art, when the current panel and the door body separate, power and the signal connection line between the front and back panel just expose, the thief can reach the effect of interrupt alarm through cutting off the front panel power firstly, secondly can destroy power cord, the circuit board of front panel through the short circuit to destroy intelligent lock power or system, make the whole paralysis of door lock or the situation that the realization technique was opened, that is to say, even there is alarm system, the thief also can reach the purpose of unblanking through the power of destroying the front panel.

Disclosure of Invention

The invention aims to provide an intelligent lock to solve the problems.

The invention provides an intelligent lock which comprises a load detection circuit, a switch circuit, a power supply circuit and a power supply circuit, wherein the power supply circuit, the switch circuit and the power supply circuit are sequentially and electrically connected, and the load detection circuit is electrically connected with the switch circuit and the power supply circuit;

the load detection circuit is used for detecting input current input to the power supply circuit and outputting a first power-off instruction to the switch circuit when the input current is larger than a preset first threshold value or smaller than a preset second threshold value;

the switch circuit is used for being cut off in response to the first power-off instruction so as to enable the power supply circuit to stop supplying power to the power supply circuit.

Further, the load detection circuit includes a current detection chip, the switch circuit includes a first switch tube and a second switch tube, a control signal output end of the current detection chip is electrically connected to a first pole of the first switch tube and is electrically connected to the power circuit, a second pole of the first switch tube is grounded, a third pole of the first switch tube is electrically connected to a first pole of the second switch tube, the second pole of the second switch tube is electrically connected to the power circuit, and the third pole of the second switch tube is electrically connected to the power circuit.

Furthermore, the intelligent lock also comprises a controller and an alarm detection circuit, wherein the controller is electrically connected with the alarm detection circuit and the switch circuit;

the alarm detection circuit is used for generating an alarm signal when an abnormal condition is detected and sending the alarm signal to the controller;

the controller is used for outputting a second power-off instruction to the switch circuit when receiving the alarm signal;

the switch circuit is also used for responding to the second power-off instruction and cutting off to enable the power supply circuit to stop supplying power to the power supply circuit.

Furthermore, the alarm signal comprises a first alarm signal and a second alarm signal, the alarm detection circuit comprises a microswitch and a photosensitive diode, and the microswitch and the photosensitive diode are both electrically connected with the controller;

the microswitch is used for responding to the operation of a user to generate a first alarm signal and transmitting the first alarm signal to the controller;

the photosensitive diode is used for generating a second alarm signal when detecting light rays and transmitting the second alarm signal to the controller;

and the controller is used for outputting the second power-off instruction to the switch circuit when receiving the first alarm signal or the second alarm signal.

Further, the intelligent lock further comprises a wireless communication circuit, and the controller is electrically connected with the wireless communication circuit;

the controller is further configured to generate a first alarm command in response to the alarm signal and transmit the first alarm command to a remote terminal via the wireless communication circuit.

Furthermore, the intelligent lock also comprises an alarm circuit, and the alarm circuit is electrically connected with the controller;

the controller is also used for responding to the alarm signal to generate a second alarm instruction and transmitting the second alarm instruction to the alarm circuit;

the alarm circuit is used for responding to the second alarm instruction to alarm.

Furthermore, the intelligent lock also comprises a verification information input circuit, and the verification information input circuit is electrically connected with the controller;

the verification information input circuit is used for responding to input operation of a user and outputting verification information;

the controller is used for generating an alarm releasing instruction when the verification information is matched with pre-stored standard verification information, and transmitting the alarm releasing instruction to the alarm circuit; the alarm circuit is used for responding to the alarm removing instruction to remove the alarm.

Furthermore, the alarm circuit comprises a third switch tube and a buzzer, a second pole of the third switch tube is electrically connected with the power circuit, a first pole of the third switch tube is electrically connected with the controller, and a third pole of the third switch tube is connected with the buzzer in series and then is grounded.

Further, the intelligent lock further comprises a reset circuit, and the reset circuit is electrically connected with the controller;

the reset circuit is used for responding to the operation of a user to generate a reset signal and transmitting the reset signal to the controller;

the controller is used for carrying out reset operation when receiving the reset signal.

Furthermore, intelligence lock still includes front panel and rear panel, the warning detection circuitry set up in the front panel, load detection circuitry, switch circuit and power supply circuit set up in the rear panel.

Compared with the prior art, the invention has the following beneficial effects: the invention provides an intelligent lock which comprises a load detection circuit, a switch circuit, an alarm detection circuit and a power supply circuit, wherein the power supply circuit, the switch circuit and the alarm detection circuit are sequentially and electrically connected, and the load detection circuit is electrically connected with the switch circuit and the power supply circuit; the load detection circuit is used for detecting the input current input to the alarm detection circuit and outputting a first power-off instruction to the switch circuit when the input current is greater than a preset first threshold value or less than a preset second threshold value; the switch circuit is used for responding to a first power-off command and cutting off. Through setting up load detection circuit, in case warning detection circuit and power disconnection or by the short circuit, load detection circuit will export first outage instruction to switch circuit so that switch circuit ends for power supply circuit stops to supply power for load detection circuit, thereby can effectively prevent that the thief from passing through the short circuit and destroying intelligent lock power, has avoided the whole paralysis of lock or the situation of being opened by the technique.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 shows a circuit connection block diagram of the intelligent lock provided by the invention.

Fig. 2 shows a schematic structural diagram of the intelligent lock provided by the invention.

Fig. 3 shows a partial circuit diagram of an intelligent lock provided by an embodiment of the present invention.

Fig. 4 shows another circuit diagram of a part of the intelligent lock provided by the embodiment of the invention.

Icon: 100-intelligent lock; 110-a controller; 111-a switching circuit; 112-a power supply circuit; 113-wireless communication circuitry; 114-an alarm circuit; 115-a reset circuit; 116-a verification information input circuit; 117-alarm detection circuit; 118-a power supply circuit; 119-a load detection circuit; 120-a front panel; 121-a lock body; 122-rear panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

The invention provides an intelligent lock 100 which is used for preventing a thief from damaging a power supply of the intelligent lock 100 through short circuit and avoiding the condition that the whole door lock is paralyzed or opened by technology. Referring to fig. 1, a circuit connection block diagram of an intelligent lock 100 according to the present invention is shown. The smart lock 100 includes a load detection circuit 119, a power supply circuit 112, a switch circuit 111, a power supply circuit 118, a controller 110, an alarm detection circuit 117, a wireless communication circuit 113, an alarm circuit 114, a verification information input circuit 116, and a reset circuit 115. The power circuit 112, the switch circuit 111 and the power supply circuit 118 are electrically connected in sequence, the load detection circuit 119 is electrically connected with the power circuit 112 and the switch circuit 111, the controller 110 is electrically connected with the switch circuit 111, the alarm detection circuit 117, the wireless communication circuit 113, the alarm circuit 114, the verification information input circuit 116 and the reset circuit 115, the power supply circuit 118 is electrically connected with the alarm detection circuit 117 and the verification information input circuit 116, and the power circuit 112 is electrically connected with the wireless communication circuit 113, the alarm circuit 114 and the reset circuit 115 (not shown).

Please refer to fig. 2, which is a schematic structural diagram of an intelligent lock 100 according to the present invention. The intelligent lock 100 includes a front panel 120, a lock body 121, and a rear panel 122, wherein the front panel 120, the lock body 121, and the rear panel 122 are sequentially disposed.

Wherein, the verification information input circuit 116 and the alarm detection circuit 117 are arranged on the front panel 120; the load detection circuit 119, the power supply circuit 112, the switch circuit 111, the power supply circuit 118, the controller 110, the wireless communication circuit 113, the alarm circuit 114, and the reset circuit 115 are all disposed on the rear panel 122.

It can be understood that the front panel 120 is usually more vulnerable than the rear panel 122, for example, if the load detection circuit 119, the power supply circuit 112, the switch circuit 111, the power supply circuit 118, the controller 110, the wireless communication circuit 113, the alarm circuit 114 and the reset circuit 115 are also disposed on the front panel 120, these circuits can be easily damaged; on the contrary, by providing the load detection circuit 119, the power supply circuit 112, the switch circuit 111, the power supply circuit 118, the controller 110, the wireless communication circuit 113, the alarm circuit 114, and the reset circuit 115 on the rear panel 122, it is possible to largely prevent the circuits from being damaged and failing to operate normally.

The power circuit 112 is used to provide power for the normal operation of the smart lock 100. Specifically, the power supply circuit 112 is used to supply power to circuits such as the power supply circuit 118, the controller 110, the wireless communication circuit 113, and the alarm circuit 114.

The power supply circuit 118 is used to supply power to the alarm detection circuit 117 and the authentication information input circuit 116. Specifically, the power supply circuit 118 converts the voltage output by the power supply circuit 112 into the voltage values required by the alarm detection circuit 117 and the verification information input circuit 116, so as to supply power to the alarm detection circuit 117 and the verification information input circuit 116.

The alarm detection circuit 117 is electrically connected to the controller 110, and is configured to detect whether an abnormal condition exists on the front panel 120, generate an alarm signal when the abnormal condition is detected, and transmit the alarm signal to the controller 110.

Referring to fig. 3, a partial circuit diagram of an intelligent lock 100 according to an embodiment of the present invention is shown. The alarm detection circuit 117 includes a micro switch and a photodiode D1, the micro switch and the photodiode D1 are electrically connected to two signal input interfaces of the controller 110, respectively, and an enable signal output port of the controller 110 is electrically connected to the switch circuit 111.

The micro switch is used for responding to the operation of a user to generate a first alarm signal and transmitting the first alarm signal to the controller 110; the photodiode D1 is used for generating a second alarm signal when detecting light and transmitting the second alarm signal to the controller 110.

It can be understood that when the front panel 120 is damaged, the micro switch changes from the closed state to the open state, and is transmitted to the controller 110 as a first alarm signal; in addition, normally, the front panel 120 is in a dark state, and when the front panel 120 is damaged, light enters to turn on the photodiode D1, so as to generate and transmit a second alarm signal to the controller 110.

In an alternative embodiment, the micro-switch is located above the front panel 120 and the photodiode D1 is located below the front panel 120. However, it should be noted that the positions of the micro switch and the photodiode D1 may be switched or otherwise, as long as the above-mentioned functions are achieved.

The controller 110 is used to execute pre-stored software or programs to implement control of the various circuits.

Specifically, the controller 110 is configured to output a second power-off command to the switch circuit 111 when receiving the alarm signal.

The alarm signal comprises a first alarm signal and a second alarm signal. The controller 110 is configured to output a second power-off command to the switch circuit 111 when receiving the first alarm signal or the second alarm signal, so that the switch circuit 111 disconnects the power supply circuit 118 from the power supply circuit 112.

That is, whether the micro switch is triggered or the photodiode D1 is triggered, the controller 110 outputs a second power-off command to the switch circuit 111.

The switch circuit 111 is configured to turn off in response to the second power-off command to stop the power supply circuit 112 from supplying power to the power supply circuit 118.

Referring to fig. 4, another circuit diagram of a portion of the smart lock 100 according to an embodiment of the present invention is shown. The switch circuit 111 includes a first switch Q1 and a second switch Q2, a first pole of the first switch Q1 is electrically connected to the enable signal output terminal of the controller 110 and to the power circuit 112, a second pole of the first switch Q1 is grounded, a third pole of the first switch Q1 is electrically connected to the first pole of the second switch Q2 and to the power circuit 112, a second pole of the second switch Q2 is electrically connected to the power circuit 112, and a third pole of the second switch Q2 is electrically connected to the alarm detection circuit 117.

The first switching tube Q1 and the second switching tube Q2 may be transistors or MOS transistors. If the first switch Q1 and the second switch Q2 are triodes, the first electrode is a base electrode, the second electrode is an emitter electrode, and the third electrode is a collector electrode; if the first switch Q1 and the second switch Q2 are MOS transistors, the first electrode is a gate, the second electrode is a source, and the third electrode is a drain.

In an alternative embodiment, the first switch Q1 is an NPN transistor, and the second switch Q2 is a P-MOS transistor.

It is understood that the second power-down command according to the embodiment of the present invention is a low signal. When the enable signal output terminal of the controller 110 outputs a low level signal to the base of the first switch transistor Q1, the first switch transistor Q1 is turned off, so that the second switch transistor Q2 is turned off, and the power circuit 112 stops supplying power to the power circuit 118.

The controller 110 is also operable to generate a second alarm instruction in response to the alarm signal and transmit the second alarm instruction to the alarm circuitry 114.

The alarm circuit 114 is operable to alarm in response to the second alarm command.

Referring to fig. 3, the alarm circuit 114 includes a third switch Q3 and a buzzer, the second pole of the third switch Q3 is electrically connected to the power circuit 112, the first pole of the third switch Q3 is electrically connected to the controller 110, and the third pole of the third switch Q3 is connected to the buzzer in series and then grounded.

It should be noted that the third switching transistor Q3 may be a PNP transistor or an N-MOS transistor. If the three switching tubes are PNP type triodes, the first electrode is a base electrode, the second electrode is an emitting electrode, and the third electrode is a collector electrode; if the third switch Q3 is an N-MOS transistor, the first electrode is a gate, the second electrode is a source, and the third electrode is a drain.

In addition, in this embodiment, the second alarm command is a low level signal. When the controller 110 outputs a low level signal, the third switching tube Q3 is turned on, and the buzzer is powered on.

By arranging the alarm circuit 114, when the door lock is damaged, a user around the door lock is warned, and the safety of the intelligent lock 100 is improved.

In addition, the controller 110 is further configured to generate a first alarm command in response to the alarm signal and transmit the first alarm command to the remote terminal via the wireless communication circuit 113.

As can be appreciated, the first alarm instruction is sent through the wireless communication circuit 113, so that even if the alarm circuit 114 is broken to stop the alarm, the thief can inform the user of the door lock condition at home, and the security of the intelligent lock 100 is further improved.

In addition, the wireless communication circuit 113 is also configured to transmit a disarm instruction, which is sent by the user through the user terminal, to the controller 110. For example, the user terminal may be a smart phone, a tablet computer or other mobile smart terminal device, the user may send an alarm releasing instruction through the mobile phone APP, the wireless communication circuit 113 receives the alarm releasing instruction and sends the alarm releasing instruction to the controller 110, when the controller 110 receives the alarm releasing instruction sent by the user terminal, the alarm releasing instruction is transmitted to the alarm circuit 114, and the alarm circuit 114 is configured to release the alarm in response to the alarm releasing instruction.

The authentication information input circuit 116 is used to output authentication information in response to an input operation by a user.

Specifically, the authentication information input circuit 116 may be of a fingerprint recognition circuit, a face recognition circuit, or the like.

The controller 110 is configured to generate a disarm instruction when the verification information matches pre-stored standard verification information, and transmit the disarm instruction to the alarm circuit 114.

For example, the verification information input circuit 116 is a fingerprint identification circuit, and when the fingerprint input by the user matches with the pre-stored fingerprint information, it indicates that the user is performing the unlocking operation, and thus generates the alarm release instruction.

The alarm circuit 114 is configured to disarm the alarm in response to a disarm command.

It will be appreciated that the disarm command is a high signal. When the controller 110 outputs a high level signal to the third switching tube Q3, the third switching tube Q3 is turned off, so that the buzzer stops working.

The reset circuit 115 is configured to generate a reset signal in response to a user operation and transmit the reset signal to the controller 110. With continued reference to fig. 3, for example, the reset circuit 115 may include a reset key, when the user presses the reset key, the reset circuit 115 generates a reset signal in response to the key operation and transmits the reset signal to the controller 110, and the controller 110 performs the reset operation in response to the reset signal.

The controller 110 is configured to perform a reset operation when receiving a reset signal.

When the controller 110 performs the reset operation, the output of the second control command to the switching circuit 111 is stopped, so that the first switching tube Q1 is turned on, and the second switching tube Q2 is also turned on, so that the power supply circuit 112 resumes the supply of power to the power supply circuit 118.

The load detection circuit 119 is configured to detect an input current to the power supply circuit 118, and output a first power-off command to the switch circuit 111 when the input current is greater than a preset first threshold or less than a preset second threshold.

It can be understood that the power supply circuit 118 is actually a load of the load detection circuit 119, and when the power supply circuit 118 is damaged by human beings to cause a short circuit, the input current input to the power supply circuit 118 is greater than a preset first threshold, and at this time, the load detection circuit 119 outputs a first power-off instruction to the switch circuit 111; when the power supply circuit 118 is broken by human damage, the input current to the power supply circuit 118 is 0 and is thus smaller than the preset second threshold, and the load detection circuit 119 also outputs a first power-off command to the switch circuit 111.

That is, as long as the power supply circuit 118 is damaged, the load detection circuit 119 outputs a first power-off command to the switch circuit 111.

The switch circuit 111 is configured to turn off in response to a first power-off command to stop the power supply circuit 112 from supplying power to the power supply circuit 118.

Referring to fig. 4, the load detection circuit 119 includes a current detection chip, and a control signal output terminal of the current detection chip is electrically connected to the first pole of the first switch Q1.

It is understood that the first power down command is also a low signal. When the control signal output terminal of the current detection chip outputs a low level signal to the base of the first switch transistor Q1, the first switch transistor Q1 is turned off, so that the second switch transistor Q2 is turned off, and the power circuit 112 stops supplying power to the power supply circuit 118.

On the contrary, when the load detection circuit 119 detects that the input current to the power supply circuit 118 is normal, it outputs a high level signal to the base of the first switch Q1, so that the first switch Q1 is turned on, and the second switch Q2 is also turned on, so that the power supply circuit 112 supplies power to the power supply circuit 118.

In summary, the intelligent lock provided by the invention comprises a load detection circuit, a switch circuit, a power supply circuit and a power supply circuit, wherein the power supply circuit, the switch circuit and the power supply circuit are electrically connected in sequence, and the load detection circuit is electrically connected with both the switch circuit and the power supply circuit; the load detection circuit is used for detecting input current input to the power supply circuit and outputting a first power-off instruction to the switch circuit when the input current is greater than a preset first threshold value or less than a preset second threshold value; the switch circuit is used for responding to a first power-off command and cutting off. Through setting up load detection circuit, in case power supply circuit and power disconnection or by the short circuit, load detection circuit will export first outage instruction to switch circuit so that switch circuit ends for power supply circuit stops to supply power for load detection circuit, thereby can effectively prevent that the thief from destroying intelligent lock power through the short circuit, has avoided the whole paralysis of lock or the situation of being opened by the technique.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent lock is characterized by comprising a load detection circuit, a switch circuit, a power supply circuit and a power supply circuit, wherein the power supply circuit, the switch circuit and the power supply circuit are sequentially and electrically connected, and the load detection circuit is electrically connected with the switch circuit and the power supply circuit;

the load detection circuit comprises a current detection chip, the switch circuit comprises a first switch tube and a second switch tube, a control signal output end of the current detection chip is electrically connected with a first pole of the first switch tube and the power circuit, a second pole of the first switch tube is grounded, a third pole of the first switch tube is electrically connected with a first pole of the second switch tube and the power circuit, a second pole of the second switch tube is electrically connected with the power circuit, and a third pole of the second switch tube is electrically connected with the power circuit;

2. The intelligent lock of claim 1, further comprising a controller and an alarm detection circuit, wherein the controller is electrically connected to the alarm detection circuit and the switch circuit;

3. The intelligent lock of claim 2, wherein the alarm signal comprises a first alarm signal and a second alarm signal, the alarm detection circuit comprises a micro switch and a photodiode, and the micro switch and the photodiode are electrically connected to the controller;

4. The smart lock of claim 2 further comprising a wireless communication circuit, said controller being electrically connected to said wireless communication circuit;

5. The smart lock of claim 2 further comprising an alarm circuit, the alarm circuit being electrically connected to the controller;

6. The smart lock of claim 5 further comprising an authentication information input circuit, said authentication information input circuit being electrically connected to said controller;

7. The intelligent lock according to claim 5, wherein the alarm circuit comprises a third switching tube and a buzzer, a second pole of the third switching tube is electrically connected with the power circuit, a first pole of the third switching tube is electrically connected with the controller, and a third pole of the third switching tube is connected with the buzzer in series and then grounded.

8. The smart lock of claim 2 further comprising a reset circuit, the reset circuit being electrically connected to the controller;

9. The smart lock of claim 2, further comprising a front panel and a rear panel, wherein the alarm detection circuit is disposed on the front panel, and wherein the load detection circuit, the switch circuit, and the power circuit are disposed on the rear panel.