CN114412292A - Intelligent lock and unlocking/locking method - Google Patents
Intelligent lock and unlocking/locking method Download PDFInfo
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- CN114412292A CN114412292A CN202111533352.XA CN202111533352A CN114412292A CN 114412292 A CN114412292 A CN 114412292A CN 202111533352 A CN202111533352 A CN 202111533352A CN 114412292 A CN114412292 A CN 114412292A
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- lock
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- unlocking
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0057—Feeding
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0067—Monitoring
Abstract
The invention relates to the technical field of locks, and discloses an intelligent lock and an unlocking/locking method, wherein the intelligent lock comprises a first sensor for monitoring the motion state of the lock; the second sensor receives an instruction of the control module to start and detect the position of the lockset; the driving module receives the instruction of the control module to drive the lock tongue of the lock to extend or retract; the control module receives the motion state of the lock and sends a starting instruction to the second sensor when the motion amplitude of the lock exceeds a preset first threshold value; when the position of the lock is in the range of the calibration position and the motion amplitude of the lock is lower than a first threshold value, an unlocking or locking instruction is sent to the driving module; and the power supply is used for supplying power to the lock. When the lock is unlocked/closed, the motion state of the lock is firstly detected, the second sensor is started to detect the position of the lock, and the lock is unlocked/closed after the condition is met, so that the energy consumption is reduced, and meanwhile, the lock can be accurately unlocked/closed.
Description
Technical Field
The invention relates to the technical field of locks, in particular to an intelligent lock and an unlocking/locking method.
Background
When the intelligent lock used on the door realizes the automatic locking and unlocking function, the position of the door needs to be judged firstly, for example, when the position of the door is judged to be in a closed state and then the intelligent lock controller is combined with other conditions to judge that the lock needs to be locked, the lock tongue can be controlled by the intelligent lock controller to pop out, and the locking is completed. In the prior art, there are 3 schemes for realizing automatic lock opening and closing, which are that firstly, whether a door is closed is detected through a mechanical switch, for example, whether a triangular tongue switch arranged on a lock body is pressed to determine the position of the door, and then lock opening and closing actions are executed; secondly, whether the door is closed or not is detected through a magnet, specifically, the magnet is arranged on a buckle box of a door frame, and a magnetic induction element (a Hall device, a reed switch and the like) on a lock body can output a signal after approaching the magnet to judge the position of the door so as to execute the action of opening and closing the lock; the third is to use a geomagnetic sensor, an acceleration sensor, a gyroscope circuit, etc., but most of them are not suitable for popularization and application of intelligent locks due to large error and high power consumption.
The MEMS chips in the general geomagnetic sensor, the acceleration sensor and the gyroscope circuit need 400-700 uA of current when working, the intelligent lock is a low-power-consumption product, and the service life of the battery needs to be opened more than 3000 times according to the requirement of the industry standard GA701/GA 374. Usually intelligent tool to lock adopts 4 sections 5# dry batteries to supply power, and the during operation can only have <200 uA's quiescent current, if directly use MEMS chips such as earth magnetic sensor to detect the position of door, need keep earth magnetic sensor for normally open state, and 24 hours continuously acquire earth magnetic signal, then its consumption can not accord with industry standard's requirement. For the user, the number of times of opening and closing the door per day is limited, and thus, the continuous detection of the position of the door causes unnecessary waste of the battery power.
In addition, the third scheme has the problem of error in locking. The heading precision of a commonly used geomagnetic sensor can only be 1 degree at present, if the geomagnetic sensor is installed on a door with the width of 1m, the translation error is about 17mm, and when the door is locked, the error of more than 3mm can cause the lock tongue to be inaccurately guided into the buckle box, so that a locking action signal is sent out when the door does not completely reach a closed position or is not completely static, and the locking is failed.
Disclosure of Invention
The present invention is made to solve the above-mentioned technical problems, and an object of the present invention is to provide an intelligent lock and an unlocking/locking method, which can reduce energy consumption and achieve accurate unlocking/locking.
In one aspect, to achieve the above object, the present invention provides an intelligent lock, including: the first sensor is used for monitoring the motion state of the lock and sending a first signal containing the motion state of the lock to the control module; the second sensor receives an instruction of the control module to start and detect the position of the lock, and sends a second signal containing the position of the lock to the control module; the driving module receives the instruction of the control module to drive the lock tongue of the lock to extend or retract; the control module receives the first signal and sends a starting instruction to the second sensor when the movement amplitude of the lockset exceeds a preset first threshold value; when the position of the lock is in the range of the calibration position and the motion amplitude of the lock is lower than a first threshold value, an unlocking or locking instruction is sent to the driving module; and the power supply is used for supplying power to the lock.
Preferably, the first sensor is any one of a micro-motion sensor, an accelerometer or a gyroscope.
Preferably, the second sensor is any one or a combination of a geomagnetic sensor, an accelerometer, an infrared sensor or a gyroscope.
Preferably, the control module comprises: the information receiving unit is used for receiving signals fed back by the first sensor and the second sensor; the logic control unit is used for sending instructions to the first sensor, the second sensor and the driving module according to the received signals and preset logic; and the storage unit is used for storing the signals received by the control module and the sent instruction information.
Preferably, the control module alternately sends out an unlocking command and a locking command.
Preferably, the control module sends an unlocking instruction or a locking instruction and then sends a closing instruction to the second sensor.
On the other hand, in order to achieve the above object, the present invention provides an unlocking/locking method, which employs the above intelligent lock, including:
monitoring the motion state of the lockset in real time, and starting a second sensor after the motion amplitude of the lockset exceeds a preset first threshold;
and detecting the real-time position of the lock, comparing the real-time position with a preset calibration position range, if the real-time position is within the calibration position range and the motion amplitude of the lock is lower than a preset first threshold value, sending an unlocking instruction or a locking instruction to the driving module, and if the real-time position is outside the calibration position range, closing the second sensor and stopping unlocking/locking.
Preferably, before the unlocking instruction or the locking instruction is sent to the driving module, the unlocking instruction and the locking instruction sent in advance are detected, if the instruction sent in advance is the unlocking instruction, the locking instruction is sent to the driving module, and if the instruction sent in advance is the locking instruction, the unlocking instruction is sent to the driving module.
Preferably, the calibration position range is a coordinate value of the calibration position ± a preset error value.
Preferably, when an unlocking instruction/locking instruction is sent to the driving module or after the unlocking instruction/locking instruction is sent, the coordinate value of the calibration position needs to be updated, and the updating method includes:
and acquiring the real-time position of the lock in a preset time period before the unlocking instruction/locking instruction is sent out, and acquiring the real-time position of the lock when the motion amplitude of the lock is smaller than a first threshold value and calculating the mean value of the real-time position as an updated calibration position.
According to the above description and practice, the intelligent lock provided by the invention monitors the motion state of the lock by arranging the first sensor with lower power consumption, and the second sensor with higher power consumption is started to detect the position information of the lock only when the lock vibrates in a larger amplitude, so that the power consumption can be effectively reduced and the service life of a power supply can be prolonged compared with the traditional lock. In addition, only when the lockset is positioned in a preset calibration position range and the vibration amplitude of the lockset is small, the lockset can execute unlocking or locking, and the accuracy of locking and unlocking can be improved. In addition, the intelligent lock is also provided with a calibration position updating program, and the calibration position can be updated after the lock is unlocked/closed every time, so that the interference of the surrounding environment of the lock on the second sensor is solved, and the accuracy of locking and unlocking is further improved.
Drawings
Fig. 1 is a schematic block diagram of an intelligent lock according to an embodiment of the present invention.
Fig. 2 is a flowchart of an unlocking/locking method according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1, in the embodiment, an intelligent lock applied to a door is provided, in which a lock body is disposed on a door leaf, a bolt of the intelligent lock extends into a bolt hole of a door frame when the door is closed, and the bolt retracts from the bolt hole when the door is opened. This intelligent tool to lock includes: the device comprises a first sensor, a second sensor, a driving module, a control module and a power supply.
The first sensor is used for monitoring the motion state of the lock, is connected with the control module, and sends a first signal containing the motion state of the lock to the control module. The user is when the switch lock, and the touch tool to lock can make the tool to lock produce the vibration of certain range, can detect this vibration through this first sensor to whether preliminary judgement user has the demand of switch lock.
In this embodiment, the first sensor is a micro sensor, when the lock is in a static state, the double-ball micro switch does not output current, that is, no pulse signal exists, and the control module cannot acquire the pulse signal; when the lockset moves, the internal circuit of the double-ball microswitch changes, the double-ball microswitch outputs current, namely, a pulse signal is generated, and the control module can receive the pulse signal and further judge the requirement of opening and closing the lock. In other embodiments, other devices capable of detecting the motion state of the object, such as an accelerometer or a gyroscope, may also be used as the first sensor, which is not described herein again.
The second sensor is used for detecting the position of the lockset, and it is noted that the second sensor is different from the first sensor in a working state continuously, and the second sensor only starts to work after receiving a starting instruction sent by the control module and sends a second signal containing the position of the lockset to the control module. In this embodiment, first sensor is geomagnetic sensor, after setting for three-dimensional coordinate origin, can detect the three-dimensional coordinate of tool to lock position, and the scheme that detects the position through geomagnetic sensor is prior art, and no longer repeated here. In addition, in other embodiments, any one or a combination of accelerometers, infrared sensors, or gyroscopes may also be employed as the second sensor to detect the location of the latch.
The driving module can be a motor, the output end of the motor is connected with the lock tongue of the lock through the linkage assembly, and the lock tongue can be controlled to extend out or retract through controlling the rotation of the output end of the motor, so that the lock can be closed or unlocked. The detailed connection structure between the motor and the lock tongue is not the innovation point of the invention, and various realizable schemes exist in the prior art, and are not described again.
The control module comprises an information receiving unit, a logic control unit and a storage unit. The information receiving unit can receive signals fed back by the first sensor and the second sensor through a wired or wireless data connection mode, and the logic control unit can make instructions according to the signals; the logic control unit is a processor with computing capacity, such as a PLC (programmable logic controller), is provided with a control program and can send instructions to the first sensor, the second sensor and the driving module according to received signals and preset logic; the storage unit is a memory and is used for storing the signals received by the control module and the sent instruction information.
The power supply is used for supplying power to each functional module in the lockset. Specifically, the power supply can adopt a storage battery, and an additional power supply interface can be arranged on the basis of the storage battery, so that an external power supply is temporarily connected to supply power under the condition that the storage battery is in power shortage.
Specifically, after receiving a first signal, a control module in the lock performs analog-to-digital conversion on a pulse signal in the first signal, converts the pulse signal into a numerical value representing the vibration amplitude of the lock, and then compares the numerical value with a preset first threshold, if the numerical value is smaller than the first threshold, the vibration amplitude of the lock is smaller, in other words, a user does not have a lock opening and closing requirement; if the vibration amplitude of the lock is larger than or equal to the first threshold value, namely the vibration amplitude of the lock is larger, in other words, a user may have a lock opening and closing requirement, at this time, the control module sends a starting instruction to the second sensor, the second sensor starts to work, and a second signal containing position information of the lock is sent to the control module.
The control module compares the position information in the second signal with a preset calibration position range, wherein the calibration position is the position of the lock when the door is closed, the calibration position range is a calibration position plus or minus a preset error value, for example, the error value is 2mm, and if the three-dimensional coordinate of the calibration position is P0(X, Y, Z), the calibration position range is (X +/-2, Y +/-2, Z +/-2), the unit in the coordinate is millimeter, and the calibration position and the error value are prestored in the control module. When the position information in the second signal is within the range of the calibrated position, the door leaf is at the closed position, at this time, the user has a demand for opening and closing the lock, meanwhile, if the pulse signal in the first signal does not exceed the first threshold after the analog-to-digital conversion, that is, the door leaf is in a relatively stable state, the control module sends an unlocking instruction or a locking instruction to the driving module, and if the pulse signal in the first signal exceeds the first threshold after the analog-to-digital conversion, that is, the door leaf is in a relatively shaking state, the control module does not send the unlocking instruction or the locking instruction to the driving module until the door leaf is in a relatively stable state, and then sends the unlocking instruction or the locking instruction.
When the door is closed, the door leaf has a vibration process with a certain amplitude from an opening state to a closing state, and at the moment, although the door leaf is in a closing position, the lock is directly closed, so that the lock tongue is easy to touch the lock tongue hole, and the service lives of the lock and the door leaf are influenced. The control module executes the program, so that the problem can be effectively avoided, the unlocking or locking can be carried out only when the door leaf is in a stable state, and the bolt hole can be accurately matched.
In addition, in the embodiment, the control module alternately sends out an unlocking command and a locking command. The storage unit stores a previous unlocking instruction and a previous locking instruction, when the condition of unlocking/locking is met, the control module firstly detects the unlocking instruction and the locking instruction which are sent in advance, if the instruction which is sent in the previous time is the unlocking instruction, the control module sends the locking instruction to the driving module, and if the instruction which is sent in the previous time is the locking instruction, the control module sends the unlocking instruction to the driving module, so that unlocking and locking can be smoothly realized.
In addition, after the control module sends an unlocking instruction or a locking instruction, a closing instruction is sent to the second sensor, so that the second sensor is in a closed state, the electric quantity can be saved, and the service life of the power supply is prolonged.
Above-mentioned intelligent lock monitors the motion state of tool to lock through setting up the lower first sensor of power consumption, only when the tool to lock vibration range is great, just starts the position information that the higher second sensor of power consumption detected the tool to lock, consequently compares in traditional tool to lock and can effectively reduce power consumption, improves the life of power. In addition, only when the lockset is positioned in a preset calibration position range and the vibration amplitude of the lockset is small, the lockset can execute unlocking or locking, and the accuracy of locking and unlocking can be improved.
It should be noted that, in the above-mentioned intelligent lock, the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical units, that is, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In this embodiment, an unlocking/locking method is further provided, in which the above-mentioned intelligent lock is applied, and referring to fig. 2, the unlocking/locking method specifically includes the following steps:
and step S1, monitoring the motion state of the lock in real time, and starting the second sensor after the motion amplitude of the lock exceeds a preset first threshold value.
This intelligent lock is in the use, and first sensor lasts and is in operating condition, the motion state of real-time supervision tool to send the first signal that contains tool to lock motion state to control module. After receiving the first signal, the control module performs analog-to-digital conversion on the first signal, converts the electric signal into a numerical value representing the movement amplitude of the lock, and if the numerical value is greater than or equal to a first threshold value, that is, the movement amplitude of the lock is large, and a lock opening and closing requirement possibly exists, the control module sends a starting instruction to the second sensor at the moment, so that the second sensor works to detect the position information of the lock; if the value is smaller than the first threshold value, the movement amplitude of the lock is smaller, the lock is not required to be opened or closed, and the second sensor is not required to be started.
And S2, detecting the real-time position of the lock, comparing the real-time position with a preset calibration position range, if the real-time position is within the calibration position range and the motion amplitude of the lock is lower than a preset first threshold value, sending an unlocking instruction or a locking instruction to the driving module, if the real-time position is out of the calibration position range, closing the second sensor and stopping unlocking/locking, and restoring the lock to the state of the step S1.
Specifically, the second sensor detects the position information of the lock after being activated, and sends the position information to the control module. The control module compares the position information with a preset calibration position range, if the position information is in the calibration position range, the door leaf where the lock is located at a closed position, subsequent unlocking or locking can be conducted, and after the fact that the movement amplitude of the lock is lower than a preset first threshold value is further determined, the control module sends an unlocking instruction or a locking instruction to the driving module. If the position information is outside the range of the calibration position, the door leaf where the lock is located is not in the closing position, that is, there is no need for opening and closing the lock, at this time, the control module sends a closing instruction to the second sensor, and stops unlocking/closing the lock, so that the opening and closing program is restored to step S1.
In addition, the control module sends an unlocking instruction or a locking instruction to the driving module, and then sends a closing instruction to the second sensor, so that the second sensor is in a closed state, and the power consumption of the lockset is reduced.
It should be noted that the control module is alternately performed when sending the unlocking instruction or the locking instruction to the drive module, that is, the control module needs to detect the unlocking instruction and the locking instruction sent earlier before sending the unlocking instruction or the locking instruction to the drive module, and if the instruction sent earlier is the unlocking instruction, the control module sends the locking instruction to the drive module, and if the instruction sent earlier is the locking instruction, the control module sends the unlocking instruction to the drive module. This kind of setting need not to set up the device that detects the spring bolt position on the tool to lock, can retrench the structure of tool to lock, reduces tool to lock power consumption.
In another embodiment, in order to ensure that the lock bolt and the lock bolt hole can be always in an accurate assembly position when the lock is opened and closed, the situation of failure of unlocking/locking is avoided. The calibration position P also needs to be updated every time the lock is opened/closed or after the lock is opened/closed0(X, Y, Z), the formula taken for updating is:
wherein, T1For a predetermined time period, T, after the second sensor has been activated, before the unlocking/locking command is issued2Is at T1The set of moments during which the vibration amplitude of the lock is greater than or equal to the first threshold value, in other words N, is at T1And (3) a set of moments when the vibration amplitude of the lockset in the time period is smaller than a first threshold value, wherein i is each moment in N, namely i belongs to N. The process of updating the calibration position may be implemented by the control module.
When the door is in a closed state, the outside can interfere with the second sensor, so that the measurement of the second sensor has errors, and the judgment of the position of the lockset in the subsequent unlocking/locking process is influenced. By updating the calibration position, the interference of the outside world on the second sensor can be reduced. For example, when the door is closed, if the door needs to be opened, the control module records the average value of the positions of the lock before the door is opened when the vibration amplitude is smaller than the first threshold value, the average value is used as a new calibration position, and a new calibration position range is calculated; when the door is subsequently closed, if the lockset is detected to be in the new calibration position range, the locking can be executed.
In another embodiment, before the unlocking instruction is sent to the driving device, the identity information of the unlocking person needs to be verified, and after the identity information is verified, the unlocking instruction is sent to the driving device. For example, a password input module, a bluetooth verification module, a fingerprint identification module, a face identification module, a radio frequency card identification module and other authentication devices are arranged on the lockset, and the unlocking program can be executed only after the authentication is passed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An intelligent lockset, comprising:
the first sensor is used for monitoring the motion state of the lock and sending a first signal containing the motion state of the lock to the control module;
the second sensor receives an instruction of the control module to start and detect the position of the lock, and sends a second signal containing the position of the lock to the control module;
the driving module receives the instruction of the control module to drive the lock tongue of the lock to extend or retract;
the control module receives the first signal and sends a starting instruction to the second sensor when the movement amplitude of the lockset exceeds a preset first threshold value; when the position of the lock is in the range of the calibration position and the motion amplitude of the lock is lower than a first threshold value, an unlocking or locking instruction is sent to the driving module;
and the power supply is used for supplying power to the lock.
2. The intelligent lockset of claim 1 wherein said locking mechanism is configured to lock said locking mechanism to said locking mechanism,
the first sensor is any one of a micro-motion sensor, an accelerometer or a gyroscope.
3. The intelligent lockset of claim 1 wherein said locking mechanism is configured to lock said locking mechanism to said locking mechanism,
the second sensor is any one or combination of a geomagnetic sensor, an accelerometer, an infrared sensor or a gyroscope.
4. The intelligent lockset of claim 1 wherein said control module comprises:
the information receiving unit is used for receiving signals fed back by the first sensor and the second sensor;
the logic control unit is used for sending instructions to the first sensor, the second sensor and the driving module according to the received signals and preset logic;
and the storage unit is used for storing the signals received by the control module and the sent instruction information.
5. The intelligent lockset of claim 1 wherein said locking mechanism is configured to lock said locking mechanism to said locking mechanism,
and the control module alternately sends out an unlocking instruction and a locking instruction.
6. The intelligent lockset of claim 1 wherein said locking mechanism is configured to lock said locking mechanism to said locking mechanism,
and the control module also sends a closing instruction to the second sensor after sending an unlocking instruction or a locking instruction.
7. An unlocking/locking method using the intelligent lock according to any one of claims 1 to 6, comprising:
monitoring the motion state of the lockset in real time, and starting a second sensor after the motion amplitude of the lockset exceeds a preset first threshold;
and detecting the real-time position of the lock, comparing the real-time position with a preset calibration position range, if the real-time position is within the calibration position range and the motion amplitude of the lock is lower than a preset first threshold value, sending an unlocking instruction or a locking instruction to the driving module, and if the real-time position is outside the calibration position range, closing the second sensor and stopping unlocking/locking.
8. The lock opening/closing method according to claim 7,
before an unlocking instruction or a locking instruction is sent to a driving module, the unlocking instruction and the locking instruction which are sent in advance need to be detected, if the instruction which is sent in the previous time is the unlocking instruction, the locking instruction is sent to the driving module, and if the instruction which is sent in the previous time is the locking instruction, the unlocking instruction is sent to the driving module.
9. The lock opening/closing method according to claim 7,
the calibration position range is a coordinate value of the calibration position plus or minus a preset error value.
10. The lock opening/closing method according to claim 9,
when an unlocking instruction/locking instruction is sent to the driving module or after the unlocking instruction/locking instruction is sent, the coordinate value of the calibration position needs to be updated, and the updating method comprises the following steps:
and acquiring the real-time position of the lock in a preset time period before the unlocking instruction/locking instruction is sent out, and acquiring the real-time position of the lock when the motion amplitude of the lock is smaller than a first threshold value and calculating the mean value of the real-time position as an updated calibration position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111533352.XA CN114412292A (en) | 2021-12-15 | 2021-12-15 | Intelligent lock and unlocking/locking method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111533352.XA CN114412292A (en) | 2021-12-15 | 2021-12-15 | Intelligent lock and unlocking/locking method |
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| CN114412292A true CN114412292A (en) | 2022-04-29 |
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| CN113775260A (en) * | 2021-09-27 | 2021-12-10 | 广东好太太智能家居有限公司 | Unlocking control method of intelligent door lock, induction unlocking device and intelligent door lock |
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Application publication date: 20220429 |