CN101949242B - Door lock control system and control method thereof - Google Patents
Door lock control system and control method thereof Download PDFInfo
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- CN101949242B CN101949242B CN2010102978114A CN201010297811A CN101949242B CN 101949242 B CN101949242 B CN 101949242B CN 2010102978114 A CN2010102978114 A CN 2010102978114A CN 201010297811 A CN201010297811 A CN 201010297811A CN 101949242 B CN101949242 B CN 101949242B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a door lock control system and a control method thereof. The control system comprises a door lock control unit, a short message transceiver unit and a door lock actuating mechanism, wherein the door lock actuating mechanism comprises a first microcontroller and a second microcontroller; the door lock control system consists of an internal module and an external module; the external module is also provided with an electric power conversion unit which acquires electric power from an electric grid and a first wireless transceiver unit which is connected with the first microcontroller; and the door lock actuating mechanism and the second microcontroller are arranged in the internal module which is also provided with a second wireless transceiver unit and a power supply unit. The method comprises the steps that: the first microcontroller receives a short message input by the short message transceiver unit, extracts charging information and transmits the charging information to the internal module through the first wireless transceiver unit; and the second microcontroller calculates an unlocking time length according to the charging information and sends an unlocking or locking signal according to the condition that whether the current time reaches the end of the time length. The door lock control system and the control method thereof can avoid frequent battery exchange and make the use of landlords and tenants convenient.
Description
Technical field
The present invention relates to a kind of door lock control system, in particular for the door lock control system of rented house and the door lock control method of using this door lock control system.
Background technology
The rent work of collecting of rented house now is that house-owner collects to the doorstep or regularly deposits corresponding fund through the lessee in to the bank account of appointment and realizes mostly; But the workload that this rent collecting mode often causes rent to be collected is big; The situation that the lessee is in arrears with rent also takes place easily, brings economic loss to house-owner.
Simultaneously; Now a lot of banks all provide the mobile phone short message prompt service; Be that the householder has a phone number of binding with its bank account, the account receives or during the remittance abroad fund, points out the revenue and expenditure of its bank account amount of money of householder to change through the mode of mobile phone short message.Bank usually uses fixing transmission number to send short message, and this short message includes account information and deposits in or the information of remittance abroad expense volume.
Therefore, the applicant application and undocumented No. 201010195827.4 applications for a patent for invention have proposed a kind ofly to use short message that bank sends and realize that rent collects the door lock control system of management, and structured flowchart of this control system is as shown in Figure 1.
Door lock control system is made up of door lock control module 11, receiving short message unit 12, power supply unit 13, electronic lock controller 14 and electronic lock recognition unit 16, and wherein electronic lock controller 14 is used to control electronic lock 15 execution on-off actions.
Receiving short message unit 12, such as the mobile phone gsm module, in a SIM card is installed, can send and receive mobile phone short message, after it receives short message, the short message that receives is sent to door lock control module 11.
Door lock control module 11 is a microcontroller, and it can receive the short message from gsm module, and short message is resolved.After microcontroller receives short message, distinguish the legitimacy of short message, and according to the charge information of short message; Like the amount of money that imports on the bank account, calculate the uncaging time length of having the right of door lock, judge that simultaneously current time is whether in uncaging time length; If in uncaging time length; Then send the control signal of unblanking,, then send sealed control signal if current time has exceeded uncaging time length to electronic lock controller 14.
Electronic lock controller 14 receives the control signal of unblanking; Do not carry out unlocking action at once; But wait for electronic lock recognition unit 16; Be after electronic lock less radio-frequency key card identification circuit receives the radio frequency signal that sends from electronic lock less radio-frequency key card, just send unlocking signal to electronic lock 15, electronic lock 15 is promptly carried out unlocking action.
If door lock control module 11 sends sealed control signal to electronic lock controller 14, even the user holds legal electronic lock less radio-frequency key card, also can't unlocking electronic lock 15.By the way; As long as the lessee arrives forward direction bank destiny account in a last uncaging time length and deposits rent in; Then door lock control module 11 sends the control signal of unblanking to electronic lock controller 14 always, and the user holds legal electronic lock less radio-frequency key card can open door lock.This system can effectively reduce the workload of collecting rent and the difficulty of collecting rent.
In addition, this system also uses a built-in power supply unit 13, like battery etc. to power supplies such as door lock control module 11, receiving short message unit 12.But; Because a large amount of electric energy of mobile phone gsm module need of work consumption; Use built-in power supply unit 13 often can not support working long hours of receiving short message unit 12, this needs house-owner or lessee often to change battery, brings great inconvenience for house-owner and lessee.
And in case door lock control system loses power supply and can't work, the lessee then can't unlocking electronic lock 15, also brings loss to the lessee.
Summary of the invention
Main purpose of the present invention provides a kind of door lock control system of avoiding the frequent change battery.
Another object of the present invention provides a kind of control method of above-mentioned door lock control system door lock.
For realizing above-mentioned main purpose, door lock control system provided by the invention comprises the door lock control module, and it is connected with a receiving short message unit; Gate lock actuator, it is connected with the door lock control module, and carries out on-off action according to the control signal control door lock that the door lock control module is sent; Wherein, The door lock control module comprises first microcontroller and second microcontroller; And door lock control system is divided into built-in module and external module; The receiving short message unit is arranged in and first microcontroller is located at external module, and external module also is provided with from electrical network and obtains the electric energy converting unit of electric energy and first wireless transmit/receive units that is connected with first microcontroller; The gate lock actuator and second microcontroller are located in the built-in module, and built-in module also is provided with and second wireless transmit/receive units of the first wireless transmit/receive units communication and the power supply unit of supplying power to second microcontroller.
Visible by such scheme; The receiving short message unit that power consumption is bigger in the door lock control system is from electrical network, to obtain electric energy through the electric energy converting unit; And the power supply unit in the built-in module is only to power supplies such as the microcontroller of built-in module, second wireless transmit/receive units; Therefore power supply unit can avoid house-owner or lessee to change battery continually for a long time to each unit power supply of built-in module.
A preferred scheme is that built-in module also is provided with the electronic lock recognition unit to second microcontroller output signal.Like this, second microcontroller receives behind the signal that the electronic lock recognition unit transmits just to gate lock actuator output unlocking signal, thereby guarantees that the lessee pays rent on time and holds legal electronic lock less radio-frequency key card and could open door lock.
Further scheme is, built-in module is provided with a detachable module, and second wireless transmit/receive units and second microcontroller are located in the detachable module.
This shows, can let house-owner increase detachable module easily, thereby conveniently repack former mounted electronic lock into door lock control system of the present invention, make things convenient for house-owner's use.
For realizing another above-mentioned purpose; The present invention provides the control method of above-mentioned door lock control system to comprise that first microcontroller receives the short message of receiving short message unit input; And extract the charge information of short message, charge information is sent to second wireless transmit/receive units of built-in module through first wireless transmit/receive units; Second wireless transmit/receive units is sent to second microcontroller with charge information; Second microcontroller calculates uncaging time length according to charge information; Judge current time whether the time of advent length terminal point, in this way, export the control signal of closed door lock to gate lock actuator; Otherwise, to the control signal of gate lock actuator output unlatching door lock.
Visible by such scheme; Built-in module and external module realize communication through first wireless transmit/receive units and second wireless transmit/receive units; Thereby make built-in module and external module that the position is set is more flexible; External module is connected with electric network source, obtains powered from electrical network, thereby avoids the frequent change battery.Built-in module can be arranged on the door with electronic lock, and does not need the frequent change battery, brings great convenience for house-owner and lessee's use.
A preferred scheme is; Second microcontroller stores a time threshold value, after second microcontroller is started working, at first judges whether to receive short message; If do not receive short message; Then get into park mode, and after time threshold arrives, wake up, judge whether to receive said short message once more with wireless radio frequency circuit.
This shows; Second microcontroller of built-in module and wireless radio frequency circuit with long-term work at park mode; The electric energy of its consumption is very little, thereby guarantees that power supply unit can work long hours, and avoids house-owner or lessee to change the battery of built-in module continually; Also can reduce because of door lock control system loses the power supply generation of situation of can't unblanking, thereby reduce lessee's loss.
Description of drawings
Fig. 1 is the structured flowchart that a kind of existing door lock control system cooperates with electronic lock.
Fig. 2 is the structured flowchart that door lock control system first embodiment of the present invention cooperates with electronic lock.
Fig. 3 is the flow chart of the work of the external module of door lock control method embodiment of the present invention.
Fig. 4 is the flow chart of the work of door lock control method embodiment built-in module of the present invention.
Fig. 5 is the structured flowchart that the built-in module of door lock control system second embodiment of the present invention cooperates with door lock.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
The specific embodiment
Door lock control system first embodiment.
Referring to Fig. 2, present embodiment is made up of external module 20 and built-in module 30, and external module 20 is arranged on outside the electronic lock housing, and preferably, it is outer and near the place of electrical socket to be arranged on door, is connected with electrical socket with convenient.External module 20 has receiving short message unit 21, microcontroller 22, wireless radio frequency circuit 23, electric energy converting unit 24 and back-up source unit 25.Built-in module 30 has microcontroller 31, wireless radio frequency circuit 32, electronic lock recognition unit 33, power supply unit 34 and is used to control the electronic lock controller 35 that electronic lock 36 is carried out on-off action.
Receiving short message unit 21 is the mobile phone gsm module, and it is equipped with the SIM that a communication is used, and is used to receive short message.Receiving short message unit 21 is sent to a microcontroller 22 with the short message that receives.
Judge the legitimacy of short message after the microcontroller 22 reception short messages; Promptly judge short message whether by bank send, whether the form of short message meet certain condition etc.; And extraction charge information; The information to house-owner's bank account inward remittance that just comprises in the short message is judged the legitimacy of charge information simultaneously, under the legal situation of charge information, sends through the wireless radio frequency circuit 23 as present embodiment first wireless transmit/receive units.
Electric energy converting unit 24 is used for High Level AC Voltage with electrical network and converts low-voltage DC to and supply uses such as receiving short message unit 21, microcontroller 22, thus its directly be connected with electrical network and the alternating current that obtains electrical network to satisfy the need of work of external module 20.Back-up source unit 25 is battery or big electric capacity etc., is used for storing electrical energy, and can't provide the electric energy that provides urgent under the situation of electric energy to satisfy the need of work of external module 20 in electric energy converting unit 24.
The wireless radio frequency circuit 32 of built-in module 30 is second wireless transmit/receive units of present embodiment, and it receives the charge information that wireless radio frequency circuit 23 transmits, and the charge information that receives is sent to microcontroller 31.
The unit's of prestoring metering data, initial chargeable time etc. in the microcontroller 31; It receives behind charge information according to the unit metering data; Be the corresponding chargeable time length of calculating metering data such as every lying-in woman's bedroom rental; Judge simultaneously whether the current moment arrive chargeable time length, send to electronic lock controller 35 according to judged result and unblank or sealed control signal.
Electronic lock controller 35 is as the gate lock actuator of present embodiment; It receives the action that the control signal of unblanking can not carried out unlocking electronic lock 36 at once; But after waiting for that receive electronic lock recognition unit 33 receives the legal radio frequency signal that electronic lock less radio-frequency key card sends, just carry out the action of unlocking electronic lock 36.
Therefore; The electronic lock recognition unit 33 of present embodiment is to be used to receive the radio frequency signal that electronic lock less radio-frequency key card sends; And judge that the radio frequency signal transmitting-receiving is legal, if legal then to the legal signal of microcontroller 31 outputs, microcontroller 31 is just carried out the action of unlocking electronic lock 36.
Certainly, if microcontroller 31 judges that current time has arrived metering data time corresponding length terminal point, even electronic lock recognition unit 33 receives the legal signal that electronic lock less radio-frequency key card sends, electronic lock 36 can not carried out unlocking action yet.
Power supply unit 34 is used for to each unit of built-in module 30 electric energy being provided such as battery etc., to satisfy the need of work of built-in module 30.
Because first wireless transmit/receive units and second wireless transmit/receive units are the short haul connection modules, distance can accomplish in 10 meters, in addition in 2 meters even shorter, so power consumption is very low, power consumption is little.And the receiving short message unit is the long haul communication module, so power consumption is very big, and power consumption is big.Adopt above-mentioned scheme, external module 20 is by mains supply, and the receiving short message unit 21 that just power consumption is bigger is to obtain electric energy from electrical network, can avoid external module 20 to change batteries like this, guarantees that external module 20 uses for a long time.
In addition; Consumed powers such as the microcontroller 31 of built-in module 30, wireless radio frequency circuit 32, electronic lock recognition unit 33 are less; Power supplies such as use battery can guarantee working long hours of built-in module 30; Thereby avoid house-owner or lessee's frequent change battery, also reduce simultaneously because of the door lock control module loses power supply and cause door lock can't open bringing the situation of loss to take place to the lessee.
Door lock control method embodiment.
The operating principle of external module is described below in conjunction with Fig. 3.After external module powers on, the receiving short message unit, promptly the mobile phone gsm module receives short message; Be execution in step S1, and execution in step S2, judge whether to receive short message; If receive then execution in step S3 of short message, otherwise return step S1, continue to wait for the reception short message.
Among the step S3; The microcontroller of external module extracts the charge information in the short message, while execution in step S4, the legitimacy of judgement charge information; Even judge this charge information whether by appointed bank send, whether account correct etc.; If charge information is legal, execution in step S5 then, otherwise return step S1.
Among the step S5, the microcontroller of external module is emitted to built-in module with charge information through wireless radio frequency circuit, then execution in step S6; Judge whether to receive the information of returning from built-in module; If receive the information of returning from built-in module, the expression built-in module has received charge information, otherwise returns execution in step S5; Resend charge information, receive charge information to guarantee built-in module.
Referring to Fig. 4, after built-in module powers on, at first receive charge information from external module by wireless radio frequency circuit; Be execution in step S11, and execution in step S12, judge whether to receive charge information; If receive charge information; Execution in step S14 then, otherwise execution in step S13, microcontroller and wireless radio frequency circuit get into park mode.Microcontroller and wireless radio frequency circuit are at first set dormancy time before getting into park mode, and after dormancy time arrives, wake up, return execution in step S11.Certainly, dormancy time can be the time threshold that is provided with in advance, and as 80 milliseconds, microcontroller 31 is this time threshold with wireless radio frequency circuit 32 each dormancy times, and is several milliseconds as the reception charge information S11 step 1.Like this, the microcontroller of built-in module and wireless radio frequency circuit will have the long cumulative time to be operated under the park mode, and consumed power seldom helps working long hours of power supply unit, avoids house-owner or lessee's frequent change battery.
Among the step S14; Microcontroller sends return information through wireless radio frequency circuit to external module, to represent successfully to receive charge information, then the charge information that receives is carried out checking again; Comprise whether the checking charge information meets certain form etc., and draw the checking result.Then, execution in step S15 judges whether the checking result of charge information is legal, if legal then execution in step S16, otherwise return execution in step S11.
Among the step S16, microcontroller calculates the corresponding chargeable time length of this charge information, and calculates the terminal point of uncaging time length in view of the above according to the unit metering data of charge information that receives and storage in advance, charging zero-time etc.Then; Microcontroller execution in step S17 judges whether current time arrives the terminal point of uncaging time length, if arrived the terminal point of uncaging time length; Execution in step S18 then; Send sealed control signal to electronic lock controller,, then send the control signal of unblanking if do not arrive uncaging time length terminal point.
Certainly, electronic lock controller receives the unlocking action that can at once not carry out electronic lock after the control signal of unblanking, but waits for that the electronic lock recognition unit receives the unlocking action of just carrying out electronic lock behind the signal that legal electronic lock less radio-frequency key card sends.
Door lock control system second embodiment.
Present embodiment is positioned at electronic lock housing outer external module and a built-in module that is positioned at the electronic lock housing by one and constitutes; External module comprises microcontroller, receiving short message unit, wireless radio frequency circuit, electric energy converting unit and back-up source unit; Its structure is identical with the external module of the operating principle and first embodiment, repeats no more.
Referring to Fig. 5, the built-in module 40 of present embodiment is provided with a detachable module 48, and detachable module 48 is provided with microcontroller 41 and as the wireless radio frequency circuit 42 of present embodiment second wireless transmit/receive units, is used to receive the charge information that external module is sent.Detachable module 48 is removably mounted in the built-in module 40, for example uses connected modes such as buckle connections, interference fit to fix, and is electrically connected through the electric contact realization between microcontroller 41 and the electronic lock controller 46.The detachable module 48 of present embodiment is mainly used in the repacking of existing electronic lock.
Also be provided with microcontroller 45, electronic lock recognition unit 43, power supply unit 44 and electronic lock controller 46 in the built-in module 40.Electronic lock recognition unit 43 is used to receive the radio frequency signal that electronic lock less radio-frequency key card sends, and the radio frequency signal that receives is sent to microcontroller 45.44 each unit power supplies to built-in module of power supply unit comprise to detachable module 48 power supplies, keep the operate as normal of built-in module 40.
After built-in module 40 powers on; The charge information that wireless radio frequency circuit 42 receives from external module; Microcontroller 41 calculates uncaging time length, and judges whether current time arrives the terminal point of uncaging time length after receiving charge information and confirming the legitimacy of computing information; If arrive and then send sealed control signal, if then do not send the control signal of unblanking to electronic lock controller 46.
Electronic lock recognition unit 43 receives the signal of electronic lock less radio-frequency key card; And the signal that receives is sent to microcontroller 45; The signal of 45 pairs of receptions of microcontroller carries out being sent to electronic lock controller 46 after legitimacy is judged; Electronic lock controller 46 judges whether to carry out the unlocking action of electronic lock 47 according to the signal of microcontroller 41 and microcontroller 45 transmission; Because of microcontroller 45 and electronic lock controller 46 are circuit of existing electronic lock; Therefore the said unlocking action of whether carrying out electronic lock 47 is the hardware output that depends on microcontroller 41 and microcontroller 45 and concern signal deciding, thisly makes the just implementation unlocking action of electronic lock 47 when having only these two signals all effective with concern signal.
Dismantled and assembled module 48 is set in built-in module 40, can lets house-owner add wireless radio frequency circuit 42 and microcontroller 41 easily, thereby conveniently repack former mounted electronic lock into door lock control system of the present invention.
Certainly, the foregoing description only is the preferable embodiment of the present invention, during practical application more variation can also be arranged, and for example, door lock control system does not use electronic lock, and is to use mechanical lock, and then gate lock actuator can be realizations such as clutch or relay; Perhaps, use alternative wireless radio frequency circuits such as infrared rays transmission circuit, Bluetooth signal transmission circuit as wireless transmit/receive units; Or, use large bulk capacitance to substitute battery as the power supply unit of built-in module etc., these changes can realize the object of the invention equally.
It is emphasized that at last to the invention is not restricted to above-mentioned embodiment that the variations such as change of the communication network that uses like the change of receiving short message unit form, receiving short message unit also should be included in the protection domain of claim of the present invention.
Claims (9)
1. door lock control system comprises
The door lock control module, said door lock control module is connected with a receiving short message unit;
Gate lock actuator, said gate lock actuator is connected with said door lock control module, and carries out on-off action according to the control signal control door lock that said door lock control module is sent;
It is characterized in that:
Said door lock control module comprises first microcontroller and second microcontroller; Said door lock control system is divided into built-in module and external module; Said receiving short message unit is arranged in and said first microcontroller is located at said external module, and said external module also is provided with from electrical network and obtains the electric energy converting unit of electric energy and first wireless transmit/receive units that is connected with said first microcontroller;
Said gate lock actuator and said second microcontroller are located in the said built-in module, and said built-in module also is provided with and second wireless transmit/receive units of the said first wireless transmit/receive units communication and the power supply unit of supplying power to said second microcontroller.
2. door lock control system according to claim 1 is characterized in that:
Said built-in module also is provided with the electronic lock recognition unit to said second microcontroller output signal.
3. door lock control system according to claim 1 is characterized in that:
Said built-in module is provided with a detachable module, and said second wireless transmit/receive units and said second microcontroller are located in the said detachable module.
4. door lock control system according to claim 3 is characterized in that:
Said built-in module also is provided with to the 3rd microcontroller of said gate lock actuator output signal and the electronic lock recognition unit that is connected with said the 3rd microcontroller.
5. according to each described door lock control system of claim 1 to 4, it is characterized in that:
Said first wireless transmit/receive units and said second wireless transmit/receive units are radio transceiver circuit or infrared rays transmission circuit or bluetooth transmission circuit.
6. according to each described door lock control system of claim 1 to 4, it is characterized in that:
Said external module also is provided with the back-up source unit that is connected with said electric energy converting unit.
7. use the door lock control method of door lock control system according to claim 1, comprise
First microcontroller receives the short message of said receiving short message unit input, and extracts the charge information of said short message, said charge information is sent to second wireless transmit/receive units of said built-in module through said first wireless transmit/receive units;
Said second wireless transmit/receive units is sent to said second microcontroller with said charge information; Said second microcontroller calculates uncaging time length according to said charge information; Judge whether current time arrives the terminal point of said time span, in this way, export the control signal of closed door lock to said gate lock actuator; Otherwise, to the control signal of said gate lock actuator output unlatching door lock.
8. door lock control method according to claim 7 is characterized in that:
After said second microcontroller receives said short message, send return information to said external module through said second wireless transmit/receive units.
9. according to claim 7 or 8 described door lock control methods, it is characterized in that:
Said second microcontroller stores a time threshold value;
Said second microcontroller judges whether to receive said short message, if do not receive said short message, then gets into park mode, and after said time threshold arrives, wakes up, judges whether to receive said short message once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102978114A CN101949242B (en) | 2010-09-30 | 2010-09-30 | Door lock control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102978114A CN101949242B (en) | 2010-09-30 | 2010-09-30 | Door lock control system and control method thereof |
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| Publication Number | Publication Date |
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| CN101949242A CN101949242A (en) | 2011-01-19 |
| CN101949242B true CN101949242B (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102978114A Expired - Fee Related CN101949242B (en) | 2010-09-30 | 2010-09-30 | Door lock control system and control method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930625B (en) * | 2012-11-16 | 2015-10-21 | 珠海天威技术开发有限公司 | Door lock control system and method |
| CN103198576A (en) * | 2013-03-29 | 2013-07-10 | 上海兆弗电子商务有限公司 | House rent intelligence system |
| CN103325167B (en) * | 2013-07-05 | 2016-03-16 | 珠海天威技术开发有限公司 | Door lock control system and control method thereof |
| CN104809775B (en) * | 2014-01-28 | 2018-03-06 | 深圳中集智能科技有限公司 | A kind of electronic lock system and control method for electronic lock |
| CN106968547B (en) * | 2017-05-08 | 2018-05-22 | 中山蓝网物联技术有限公司 | Automatic door opener with self-locking and wireless communication functions |
| CN115497201B (en) * | 2022-09-07 | 2024-03-01 | 中国建设银行股份有限公司 | Lockset task processing method and device, computer equipment and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050204787A1 (en) * | 2004-03-19 | 2005-09-22 | Nick Ernst | Hotel in-room safe automated control and communication system |
| CN101161968B (en) * | 2007-11-29 | 2012-04-25 | 赵金保 | Gate inhibition system and method of use thereof |
| CN201351401Y (en) * | 2009-01-07 | 2009-11-25 | 何海生 | Cipher lock capable of being controlled through messages |
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