CN111236753A

CN111236753A - Optical coded lock

Info

Publication number: CN111236753A
Application number: CN202010148038.9A
Authority: CN
Inventors: 钱焰军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-06-05

Abstract

The embodiment of the invention provides an optical coded lock, and relates to the field of coded locks. The optical coded lock comprises a control unit, a transmitting component, a receiving component, a light path component, a key component and a lock plunger component, wherein the transmitting component is used for transmitting light when the key component is arranged in a key hole, and the light irradiates the receiving component through the key component and the light path component; the receiving component is used for receiving the light and generating key information according to the light signal of the light; the control unit is used for comparing the key information with a preset key and controlling the locking bolt assembly to unlock when the key information is matched with the preset key. In the invention, after the light emitted by the emitting component passes through the key component, the frequency spectrum information of the key component is projected onto the receiving component, so that the lock is unlocked. The light mode is adopted to realize unlocking, so that the safety performance of the whole optical coded lock is provided.

Description

Optical coded lock

Technical Field

The invention relates to the field of coded locks, in particular to an optical coded lock.

Background

At present, the mainstream lockset mainly comprises a traditional mechanical lock, a mechanical coded lock, a magnetic card lock and a fingerprint lock, but the locks have some defects. For example, the traditional mechanical lock is easy to damage, the anti-theft performance is low, and the key is easy to copy; the encryption bit number of a general mechanical coded lock is low, even the password can be cracked through limited attempts, and the safety performance cannot be guaranteed; the magnetic card lock transmits encrypted information through an electromagnetic technology, so that great safety risk exists, and even a special magnetic card lock cracking tool is sold on the internet; the fingerprint lock is based on biological characteristics and is very convenient to use, but people can leave their fingerprints everywhere every day, so that the fingerprint lock is easy to be copied by lawbreakers, has great potential safety hazards and has poor safety performance.

Disclosure of Invention

The invention aims to provide an optical coded lock, which can realize unlocking in a light mode and provides the safety performance of the whole optical coded lock.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment provides an optical combination lock, including: the device comprises a control unit, a transmitting component, a receiving component, a light path component, a key component and a lock plunger component, wherein the transmitting component is arranged at one end of the light path component, the receiving component is arranged at the other end of the light path component, a key hole is formed in the light path component, and the receiving component is electrically connected with the control unit;

the transmitting component is used for transmitting light rays when the key component is arranged in the key hole, wherein the light rays irradiate the receiving component through the key component and the light path component;

the receiving component is used for receiving the light and generating key information according to the light signal of the light;

the control unit is used for comparing the key information with a preset key and controlling the lock bolt assembly to unlock when the key information is matched with the preset key.

In an optional embodiment, the receiving assembly comprises a receiving plate, a plurality of photoresistors are arranged on the receiving plate, the photoresistors are arranged towards the transmitting assembly, and the plurality of photoresistors are electrically connected with the control unit;

when the light emitted by the emitting component irradiates the photosensitive resistors, the control unit sequentially detects the resistance values of the photosensitive resistors to acquire the key information.

In an optional implementation manner, the control unit is configured to sequentially obtain resistance values of the plurality of photo resistors, when it is detected that the resistance value of the photo resistor is greater than a preset resistance value, the control unit is configured to mark the photo resistor as first information and record the first information to a position corresponding to the photo resistor, when the resistance value of the photo resistor is less than the preset resistance value, the control unit is configured to mark the photo resistor as second information and record the second information to the position corresponding to the photo resistor, and the first information or the second information of the plurality of photo resistors forms the key information.

In an optional implementation manner, the control unit is configured to sequentially obtain resistance values of the plurality of photo resistors, and when it is detected that the resistance value of the photo resistor is within a certain preset interval of a plurality of preset intervals, the control unit is configured to mark preset information of the photo resistor corresponding to the preset interval, and correspond the preset information to a position of the photo resistor, where the preset information of the plurality of photo resistors forms the key information, and the preset intervals are sequentially continuous. In an optional embodiment, the optical combination lock further includes a first conducting chip and a second conducting chip, the first conducting chip and the second conducting chip are electrically connected to the control unit, the control unit has a reading end, a plurality of photosensitive resistors are arrayed to form a plurality of rows and a plurality of columns, the first conducting chip has a plurality of first conducting ends, one first conducting end is electrically connected to the plurality of photosensitive resistors in the same row, the first conducting chip is connected to a power supply, the second conducting chip has a plurality of second conducting ends, one second conducting end is electrically connected to the plurality of photosensitive resistors in the same column, the second conducting chip is grounded, and the reading end sequentially reads the resistance values of the plurality of photosensitive resistors;

the control unit is used for sending an acquisition signal corresponding to one of the photoresistors;

the first conduction chip is used for controlling the conduction of the first conduction end connected with the photosensitive resistor according to the acquisition signal, the second conduction chip is used for controlling the conduction of the second conduction end connected with the photosensitive resistor according to the acquisition signal so as to enable the photosensitive resistor to be conducted, and the reading end is used for reading the resistance value of the photosensitive resistor.

In an optional implementation manner, the receiving component includes an image collector, and the image collector is configured to receive image information of the light on the image collector, and generate the key information according to the image information. In an alternative embodiment, the key assembly is a diffractive optical element.

In an alternative embodiment, the key assembly includes a plurality of diffractive optical sheets, the plurality of diffractive optical sheets are sequentially disposed in the key hole, and the light sequentially passes through the plurality of diffractive optical sheets.

In an alternative embodiment, the phase distribution among the plurality of diffractive optical sheets is a phase preset value.

In an alternative embodiment, the latch assembly includes a driving switch, a driver and a latch structure, the driving switch is electrically connected with the control unit, the driving switch is connected in series between a power source and the driver, and the driver is in transmission connection with the latch structure;

and the control unit is used for sending a starting signal to the driving switch after judging that the key information is matched with the preset key, and the driving switch is switched on to enable the driver to drive the lock bolt structure to unlock.

The embodiment of the invention has the following beneficial effects: the optical coded lock comprises a control unit, a transmitting component, a receiving component, a light path component, a key component and a lock plunger component, wherein the transmitting component is arranged at one end of the light path component, the receiving component is arranged at the other end of the light path component, a key hole is formed in the light path component, and the receiving component is electrically connected with the control unit; the transmitting assembly is used for transmitting light rays when the key assembly is arranged in the key hole, wherein the light rays irradiate the receiving assembly through the key assembly and the light path assembly; the receiving component is used for receiving the light and generating key information according to the light signal of the light; the control unit is used for comparing the key information with a preset key and controlling the locking bolt assembly to unlock when the key information is matched with the preset key.

In the invention, after the key assembly is inserted into the key hole, the emitting assembly generates light, the light irradiates the receiving assembly after passing through the key assembly and the light path assembly, the receiving assembly generates key information according to a light signal of the light, the control unit compares the key information with a preset key after receiving the key information, and when the key information is matched with the preset key, the control unit controls the locking bolt assembly to unlock. In the invention, after the light emitted by the emitting component passes through the key component, the frequency spectrum information of the key component is projected onto the receiving component, so that the lock is unlocked. The key assembly can concentrate abundant frequency spectrum information in a small size, and the safety performance of the whole optical coded lock is provided by unlocking in a light mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an optical combination lock according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating spectral information of a single diffractive optical element as a key component of an optical combination lock according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating the spectrum information of a plurality of diffractive optical pieces as a key component of an optical combination lock according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating frequency spectrum information of a key assembly of an optical combination lock according to an embodiment of the present invention, wherein the frequency spectrum information is obtained by angularly arranging a plurality of diffractive optical sheets;

FIG. 5 is a circuit diagram of an optical combination lock according to an embodiment of the present invention;

FIG. 6 is a circuit diagram of a transmitting assembly of an optical combination lock according to an embodiment of the present invention;

FIG. 7 is a circuit diagram of a plug assembly of an optical combination lock provided by an embodiment of the present invention;

fig. 8 is a circuit diagram of an alarm unit of an optical combination lock according to an embodiment of the present invention.

Icon: 100-optical combination lock; 110-a control unit; 112-a read end; 120-a key assembly; 122-a diffractive optical sheet; 130-a receiving component; 132-a receiving plate; 134-a photoresistor; 140-an optical path component; 141-keyhole; 142-a first optical path structure; 1422-emission aperture; 1424 — first channel; 1426-mount; 144-a second optical path structure; 1442 — second channel; 146-convex lens; 150-a transmitting assembly; 152-an emission light source; 154-start switch; 156-a transmit switch; 160-a latch assembly; 162-drive switch; 164-a driver; 170-first pass chip; 172-first conducting terminal; 180-a second pass-through chip; 182-a second conducting terminal; 190-an alarm unit; 192-an alarm switch; 194-alarm.

Detailed Description

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.

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 if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to 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.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Examples

Referring to fig. 1, the present embodiment provides an optical combination lock 100, and the optical combination lock 100 provided in the present embodiment can be unlocked by using light, so that the security performance of the whole optical combination lock 100 is provided.

In the present embodiment, the optical combination lock 100 includes: the key assembly comprises a control unit 110, a transmitting assembly 150, a receiving assembly 130, a light path assembly 140, a key assembly 120 and a lock plunger assembly 160, wherein the transmitting assembly 150 is arranged at one end of the light path assembly 140, the receiving assembly 130 is arranged at the other end of the light path assembly 140, a key hole 141 is formed in the light path assembly 140, and the receiving assembly 130 is electrically connected with the control unit 110;

the emitting component 150 is used for emitting light when the key component 120 is disposed in the key hole 141, wherein the light irradiates the receiving component 130 through the key component 120 and the light path component 140;

the receiving component 130 is configured to receive the light and generate key information according to the light signal of the light;

the control unit 110 is configured to compare the key information with a preset key, and to control the locking bolt assembly 160 to unlock when the key information matches the preset key.

In this embodiment, after the key assembly 120 is inserted into the key hole 141, the emitting assembly 150 emits light, the light passes through the key assembly 120 and the optical path assembly 140 and then irradiates the receiving assembly 130, the receiving assembly 130 generates key information according to the light signal of the light, the control unit 110 compares the key information with a preset key after receiving the key information, and when the key information is matched with the preset key, the control unit 160 is controlled to unlock. In this embodiment, after the light emitted by the emitting component 150 passes through the key component 120, the spectrum information of the key component 120 is projected onto the receiving component 130, so as to unlock the lock. The key assembly 120 is capable of concentrating rich spectral information within a small size and enabling light to unlock provides security for the entire optical combination lock 100.

In the present embodiment, the key assembly 120 is a diffractive optical element. The spectrum information of different diffractive optical elements is different, and whether the corresponding key assembly 120 is determined according to the spectrum information, and the correct spectrum information is converted into the preset key and stored in the control unit 110, where the spectrum information of the diffractive optical element is approximately: when the light beam irradiates the key assembly 120, the spectrum information of the key assembly 120 is substantially a plurality of light spots, and when the light beam emitted by the emitting assembly 150 passes through the key assembly 120, the plurality of light spots are formed on the receiving assembly 130, and it can be determined whether the key assembly 120 is the correct key assembly 120 according to the positions of the light spots.

In this embodiment, the control unit 110 is an STM32 single chip microcomputer.

In the present embodiment, as shown in fig. 2, when the diffractive optical element is used, where a is an image plane phase distribution diagram of the diffractive light source element and b is a corresponding spectral plane light intensity distribution diagram.

In the present embodiment, the key assembly 120 includes a plurality of diffractive optical elements 122, the diffractive optical elements 122 are sequentially disposed in the key hole 141, and the light sequentially passes through the diffractive optical elements 122. When the key assembly 120 is a plurality of diffractive optical sheets 122, the spectral information formed on the receiving assembly 130 by superimposing the plurality of diffractive optical sheets 122 may be encrypted with a plurality of diffractive optical sheets 122.

In this embodiment, the plurality of diffractive optical elements 122 may be distributed in different hands, and unlocking is started after the plurality of diffractive optical elements 122 are assembled.

As shown in fig. 3, when there are two diffractive optical sheets, the lock can be unlocked only when the two diffractive optical sheets are simultaneously inserted into the key hole, where a is an image plane phase distribution diagram of the diffractive light source element, and b is a spectral plane light intensity distribution diagram. The c diagram is the image plane phase distribution diagram of another diffraction light source element, and the d diagram is the corresponding spectrum plane light intensity distribution diagram. It should be noted that phase distribution among the plurality of diffractive optical sheets 122 may also be set, and the phase distribution among the plurality of diffractive optical sheets is a preset phase value, so as to improve the encryption dimension of the entire key assembly 120. For example: when the number of the diffraction optical sheets is two, the phase preset value of the overall phase random distribution of the two diffraction optical sheets is R, that is, in the two diffraction optical sheets, one of the diffraction optical sheets and the R are negative films, and correct frequency spectrum information can be displayed after the two diffraction optical sheets are superposed with the other diffraction optical sheet. As shown in fig. 4, a is an image plane phase distribution diagram of the diffractive light source element, and b is a corresponding spectral plane light intensity distribution diagram. The c diagram is the image plane phase distribution diagram of another diffraction light source element, and the d diagram is the corresponding spectrum plane light intensity distribution diagram. e is the image plane phase distribution diagram after the two diffraction light source elements are superposed, and f is the corresponding spectrum plane light intensity distribution diagram.

Referring to fig. 5, in the present embodiment, the receiving assembly 130 includes a receiving plate 132, a plurality of photo resistors 134 are disposed on the receiving plate 132, the photo resistors 134 are arrayed on the receiving plate 132, the photo resistors 134 are disposed toward the emitting assembly 150, and the photo resistors 134 are electrically connected to the control unit 110;

when the light emitted from the emitting component 150 irradiates on the photo-resistors 134, the control unit 110 sequentially detects the resistance values of the photo-resistors 134 to obtain the key information.

In this embodiment, when the light irradiates the photo resistor 134, the resistance of the photo resistor 134 is very small, and the resistance of the photo resistor 134 that is not irradiated by the light is very large, so that the distribution position of the light spot is detected by detecting the change of the resistance of the photo resistor 134, thereby determining the spectrum information of the key assembly 120, obtaining the key information, and determining whether the key assembly 120 is correct.

In this embodiment, the control unit 110 is configured to sequentially obtain the resistance values of the plurality of photo resistors 134, when it is detected that the resistance value of the photo resistor 134 is greater than the resistance value preset value, the control unit 110 is configured to mark the photo resistor 134 as the first information and record the first information to the position corresponding to the photo resistor 134, when the resistance value of the photo resistor 134 is less than the resistance value preset value, the control unit 110 is configured to mark the photo resistor 134 as the second information and record the second information to the position corresponding to the photo resistor 134, and the first information or the second information of the plurality of photo resistors 134 form the key information.

In this embodiment, after the receiving assembly 130 receives the light, the resistance values of the plurality of photosensitive assemblies are sequentially obtained, when the resistance value of the photosensitive resistor 134 is greater than the resistance value preset value, the resistance value of the photosensitive resistor 134 is infinite, it can be determined that the photosensitive resistor 134 is in a dark state, that is, no light spot exists at the position, the photosensitive resistor 134 can be marked as the first information, that is, the mark is 0, if it is detected that the resistance value of the photosensitive resistor 134 is less than the resistance value preset value, it is indicated that the resistance value of the photosensitive resistor 134 is very small and almost zero, that is, the position is irradiated by the light spot, and the photosensitive resistor 134 can be marked as the second information, that is.

In this embodiment, the resistance values of the photo resistors 134 are sequentially detected in sequence, and the first information or the second information is sequentially recorded in sequence, so as to finally form the key information, where the key information may be "1001 ….. 1001" or "0011 ….. 111", and the key information is compared with the preset key, and when the key information and the preset key are matched, the lock can be unlocked.

In other embodiments of the present invention, the marking may also be performed in a multilevel manner, and the control unit 110 is configured to sequentially obtain the resistance values of the plurality of photo resistors 134, and when it is detected that the resistance value of the photo resistor 134 is within a certain preset interval of the plurality of preset intervals, the control unit 110 is configured to mark the photo resistor 134 as preset information corresponding to the preset interval, and correspond the preset information to the position of the photo resistor 134, where the preset information of the plurality of photo resistors 134 forms key information, where the plurality of preset intervals are sequentially continuous.

For example: when the multilevel system is a 10-level system, the preset intervals have ten intervals which are consecutive from small to large, and are a first preset interval, a second preset interval, a third preset interval … …, an eighth preset interval, a ninth preset interval and a tenth preset interval in sequence, when it is detected that the resistance value of the photo-resistor 134 is in the first preset interval, the control unit 110 marks the preset information of the photo-resistor 134 as 1, marks the preset information of the photo-resistor 134 as 2 in the second preset interval, and so on in other intervals, and finally formed key information may be "1254 …, 8597", "13897 …, 54839" and so on. The resistance value of the photosensitive resistor 134 is marked in a 10-system mode, and 10-system coding is performed according to the resistance value change range of the photosensitive resistor 134, so that the encryption dimension of key information is improved, and the safety performance is improved. In this embodiment, the optical combination lock 100 further includes a first conducting chip 170 and a second conducting chip 180, the first conducting chip 170 and the second conducting chip 180 are electrically connected to the control unit 110, the control unit 110 has a reading end 112, the plurality of photo resistors 134 are arrayed to form a plurality of rows and a plurality of columns, the first conducting chip 170 has a plurality of first conducting ends 172, one first conducting end 172 is electrically connected to the plurality of photo resistors 134 in the same row, the first conducting chip 170 is connected to a power source, the second conducting chip 180 has a plurality of second conducting ends 182, one second conducting end 182 is electrically connected to the plurality of photo resistors 134 in the same column, the second conducting chip 180 is grounded, and the reading end 112 sequentially reads the resistance values of the plurality of photo resistors 134;

the control unit 110 is configured to send an acquisition signal corresponding to one of the photo-resistors 134;

the first conducting chip 170 is configured to control a first conducting terminal 172 connected to the photo resistor 134 to conduct according to the obtaining signal, the second conducting chip 180 is configured to control a second conducting terminal 182 connected to the photo resistor 134 to conduct according to the obtaining signal, so that the photo resistor 134 is conducted, and the reading terminal 112 is configured to read a resistance value of the photo resistor 134.

In this embodiment, after the light irradiates on the photo-resistors 134, the resistance of the photo-resistors 134 changes, and the control unit 110 sequentially obtains the resistance of each photo-resistor 134. Starting from the first photo resistor 134, when the control unit 110 wants to obtain the resistance value of the photo resistor 134, the control unit 110 sends an obtaining signal corresponding to the photo resistor 134, the first conducting chip 170 conducts the first conducting terminal 172 connected to the photo resistor 134 after receiving the signal, the second conducting chip 180 conducts the second conducting terminal 182 connected to the photo resistor 134 after receiving the signal, so that one end of the photo resistor 134 is connected to the power supply, the other end is grounded, the photo resistor 134 is powered on, and the reading terminal 112 reads the resistance value of the photo resistor 134. After completion, the resistance of the next photo resistor 134 is read in the same manner.

In other embodiments of the present invention, the receiving component 130 includes an image collector, and the image collector is configured to receive image information of the light on the image collector and generate key information according to the image information.

When the receiving component 130 is an image collector, the light is imaged on the image collector, and the image collector generates key information according to the collected image information and sends the key information to the control unit 110.

Referring to fig. 1, in the present embodiment, the light path assembly 140 includes a first light path structure 142, a second light path structure 144, and a convex lens 146, the first light path structure 142 is provided with an emitting hole 1422 and a first channel 1424, the emitting hole 1422 is communicated with the first channel 1424, the key hole 141 is disposed on the first light path structure 142 and is communicated with the first channel 1424, the emitting hole 1422 is used for accommodating the emitting assembly 150, the second light path structure 144 is provided with a second channel 1442, the convex lens 146 is installed in the second channel 1442, one end of the second channel 1442 is connected with the first channel 1424, and the receiving assembly 130 is disposed at one end of the second channel 1442, which is far away from the first channel 1424.

In the present embodiment, the transmitting assembly 150 is disposed at the front focal plane of the convex lens 146, and the receiving assembly 130 is disposed at the rear focal plane of the convex lens 146.

In this embodiment, the first optical path structure 142 is provided with a mounting portion 1426, and the mounting portion 1426 extends into the second passage 1442.

In this embodiment, the first light path structure 142 extends into the second channel 1442, so that all the light emitted by the emitting component 150 is refracted by the convex lens 146 and then converged at the plurality of photo resistors 134, thereby improving the accuracy of the key information.

In this embodiment, the convex lens 146 provides a far field condition for the receiving assembly 130 to receive light.

It should be noted that the first light path structure 142, the second light path structure 144, and the convex lens 146 may be integrally formed.

Referring to fig. 6, in the present embodiment, the emission assembly 150 includes an emission light source 152, a start switch 154, and an emission switch 156, the emission switch 156 is connected in series between a power source and the emission light source 152, the start switch 154 is electrically connected to the emission switch 156, and when the start switch 154 is closed, the emission switch 156 is turned on, so that the power source is turned on with the emission light source 152.

In this embodiment, when the key assembly 120 is installed in the key hole 141, the start switch 154 is activated, the emission switch 156 is turned on, the emission light source 152 is turned on, and the emission light source 152 emits light.

In this embodiment, the start switch 154 is a push button switch, and when the key assembly 120 is placed in the keyhole 141 and the push button switch is pressed, the emission switch 156 is turned on, so that the emission light source 152 is turned on.

In this embodiment, the conducting switch is a triode, the base is electrically connected to the start switch 154, the collector is connected to the power supply, and the emitter is electrically connected to the emission light source 152.

Referring to fig. 7, in the present embodiment, the latch assembly 160 includes a driving switch 162, a driver 164 and a latch structure, the driving switch 162 is electrically connected to the control unit 110, the driving switch 162 is connected in series between a power source and the driver 164, and the driver 164 is in transmission connection with the latch structure;

the control unit 110 is configured to send a start signal to the driving switch 162 after determining that the key information matches the preset key, and the driving switch 162 is turned on, so that the driver 164 drives the lock bolt structure to unlock.

In this embodiment, the driving switch 162 has a first terminal, a second terminal and a third terminal, the first terminal is electrically connected to the control unit 110, the second terminal is electrically connected to the power source, the third terminal is electrically connected to the driver 164, and when the first terminal receives the start signal, the second terminal and the third terminal are turned on.

In this embodiment, the first terminal is a base, the second terminal is a collector, and the third terminal is an emitter.

Referring to fig. 8, the optical combination lock 100 further includes an alarm unit 190, the alarm unit 190 is electrically connected to the control unit 110, and the control unit 110 is configured to send a matching signal to the alarm unit 190 when the key information matches the preset key, so that the alarm unit 190 sends a first alarm signal;

the control unit 110 is further configured to send a failure signal to the alarm unit 190 when the key information does not match the preset key, so that the alarm unit 190 sends a second alarm signal.

In this embodiment, the alarm unit 190 includes an alarm switch 192 and an alarm 194, the alarm switch 192 is electrically connected to the control unit 110, and the alarm switch 192 is connected in series between a power supply and the alarm 194; when the alarm switch 192 receives the matching signal, the alarm unit 190 transmits a first alarm signal, and when the alarm switch 192 receives the failure signal, the alarm unit 190 transmits a second alarm signal.

In this embodiment, when the key information matches the preset key, the alarm 194 issues an "unlocking success" indication, and when the key information does not match the preset key, the alarm 194 issues an "unlocking failure" indication.

The working principle of the optical combination lock 100 provided by the embodiment is as follows: in this embodiment, after the diffractive optical element 122 is placed in the key hole 141, the light source 152 emits light, the light passes through the optical path component 140 and the diffractive optical element 122 and forms an image on the photo resistor 134, the control unit 110 sequentially obtains the resistance value of the photo resistor 134, converts the resistance value into key information, unlocks when the key information is matched with a preset key, and controls the alarm 194 to send an "unlocking success" indication.

In summary, in the optical combination lock 100 provided in this embodiment, after the key element 120 is inserted into the key hole 141, the emitting element 150 generates light, the light passes through the key element 120 and the optical path element 140 and then irradiates the receiving element 130, the receiving element 130 generates key information according to the light signal of the light, the control unit 110 compares the key information with a preset key after receiving the key information, and when the key information is matched with the preset key, the locking bolt element 160 is controlled to unlock. In this embodiment, after the light emitted by the emitting component 150 passes through the key component 120, the spectrum information of the key component 120 is projected onto the receiving component 130, so as to unlock the lock. The use of light to effect unlocking provides the security of the entire optical combination lock 100.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An optical combination lock, comprising: the device comprises a control unit, a transmitting component, a receiving component, a light path component, a key component and a lock plunger component, wherein the transmitting component is arranged at one end of the light path component, the receiving component is arranged at the other end of the light path component, a key hole is formed in the light path component, and the receiving component is electrically connected with the control unit;

2. The optical combination lock of claim 1, wherein the receiving assembly comprises a receiving plate, a plurality of photo resistors are arranged on the receiving plate in an array manner, the photo resistors are arranged towards the transmitting assembly, and the photo resistors are all electrically connected with the control unit;

3. The optical combination lock of claim 2, wherein the control unit is configured to sequentially obtain resistance values of the plurality of photo resistors, when it is detected that the resistance value of the photo resistor is greater than a preset resistance value, the control unit is configured to mark the photo resistor as first information and record the first information to a position corresponding to the photo resistor, and when the resistance value of the photo resistor is smaller than the preset resistance value, the control unit is configured to mark the photo resistor as second information and record the second information to a position corresponding to the photo resistor, and the first information or the second information of the plurality of photo resistors forms the key information.

4. The optical combination lock of claim 2, wherein the control unit is configured to sequentially obtain resistance values of the photo resistors, and when the resistance value of the photo resistor is detected to be within a certain preset interval of a plurality of preset intervals, the control unit is configured to mark the photo resistor as preset information corresponding to the preset interval, and to correspond the preset information to a position of the photo resistor, where the preset information of the photo resistors forms the key information, and the preset intervals are sequentially consecutive.

5. The optical combination lock according to claim 3 or 4, further comprising a first conducting chip and a second conducting chip, wherein the first conducting chip and the second conducting chip are electrically connected to the control unit, the control unit has a reading end, a plurality of photo resistors are formed in a plurality of rows and columns after being arrayed, the first conducting chip has a plurality of first conducting ends, one of the first conducting ends is electrically connected to the photo resistors in the same row, the first conducting chip is connected to a power supply, the second conducting chip has a plurality of second conducting ends, one of the second conducting ends is electrically connected to the photo resistors in the same column, the second conducting chip is grounded, and the reading end sequentially reads the resistance values of the photo resistors;

6. The optical combination lock of claim 1, wherein the receiving component comprises an image collector, and the image collector is configured to receive image information of the light on the image collector and generate the key information according to the image information.

7. An optical combination lock according to claim 1, wherein the key assembly is a diffractive optical element.

8. An optical combination lock according to claim 7, wherein the key assembly comprises a plurality of diffractive optical elements arranged in sequence within the keyway, the light passing through the plurality of diffractive optical elements in sequence.

9. The optical combination lock of claim 8, wherein the phase distribution among the plurality of diffractive optical sheets is a phase preset value.

10. The optical combination lock of claim 1, wherein the latch assembly includes a drive switch, a driver and a latch structure, the drive switch being electrically connected to the control unit, the drive switch being connected in series between a power source and the driver, the driver being drivingly connected to the latch structure;