CN103700173A - Door lock and use method thereof - Google Patents

Door lock and use method thereof Download PDF

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Publication number
CN103700173A
CN103700173A CN201310718967.9A CN201310718967A CN103700173A CN 103700173 A CN103700173 A CN 103700173A CN 201310718967 A CN201310718967 A CN 201310718967A CN 103700173 A CN103700173 A CN 103700173A
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China
Prior art keywords
air valve
lock body
cloud server
control module
wireless communication
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CN201310718967.9A
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Chinese (zh)
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CN103700173B (en
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朱俊岗
朱峰
朱俊岭
余建美
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Nanjing IoT Sensor Technology Co Ltd
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Nanjing IoT Sensor Technology Co Ltd
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Abstract

The invention provides a door lock and a use method thereof. The door lock comprises a lock head and a lock body, wherein a user sends out an order for controlling the locking/unlocking of the lock body by an intelligent terminal and controls the locking/unlocking action of the lock body by a cloud server and gateway equipment. The door lock is simple in structure, convenient to use, stable in structure and performance, free from phenomena of malfunction or sticking, so that not only can the door lock be controlled with a long range, but also the door lock can be manually controlled with a close range; the door lock is hard to identify and crack, so that the safety of wireless control can be further improved; the effect for automatically locking the door lock can be realized.

Description

Door lock and using method thereof
Technical field
The present invention relates to intelligent controlling device application, particularly a kind of Pneumatic door lock of intelligent controlling device and using method thereof.
Background technology
At present, occurred a variety of door locks on market, be mainly used in hotel and resident family, door lock is as safety precaution product, vital during its security.General door lock consists of tapered end and lock body two parts, then moves in tapered end by the locking bar in lock body, realizes the object of locking, and tapered end is arranged on a side of doorframe, and lock body is arranged near on the body of wall of doorframe, fastens behind the door, and locking bar is moved in tapered end.But there are some problems: 1, the intensity of mechanical lock is all fine at present, the method being difficult to by force comes damage lock still, and current lock generally has keyhole, and this is locked to such an extent that security has brought hidden danger, a lot of stolen events, have successfully opened lock because offender utilizes keyhole often; 2, user gets back to indoor neglecting locking the door sometimes, there is no instant prompting function, has potential safety hazard; 3, indoor people locks door, and indoor meeting accident cannot be unblanked immediately, carries out very first time rescue, has design, familiar lacunas; 4,, often can there is malfunctioning or stuck phenomenon in existing gas-operated lock poor stability, and drive unit is deposited defect in design, can not meet actual needs.
With reference to accompanying drawing 1, Chinese Patent Application No. is that 201120228707.X denomination of invention is in " a kind of Pneumatic door lock ", to have disclosed content: a kind of gas-operated lock, comprise tapered end, tapered end screw, locking bar, rotation pneumatic element, remote control circuit, described locking bar is connected with rotation pneumatic element, and tapered end screw and locking bar are threaded connection., often can there is malfunctioning or stuck phenomenon in above-mentioned patent complicated in mechanical structure, promote the use of difficulty, also cannot realize that long distance wireless is locked or the function of release.
ZigBee is the radio network technique of a kind of novel short distance, low-power consumption, low data rate, low cost, low complex degree; It has taked the whole limited of the strong radio physical layer defined of IEEE802.1.4: economize point, simple, cost low specification again; And increased logical network, network security and application layer.ZigBee wireless transmission bandwidth, in 20-250KB/s scope, is applicable to the transmission of sensor data acquisition and control data, and ZigBee is wireless can set up large scale network, and network node capacity reaches 65535, has very powerful networking advantage.
Summary of the invention
In order to overcome the defect of prior art, the invention provides a kind of door lock and using method thereof, complicated to solve in prior art mechanism, often can there is malfunctioning or stuck phenomenon and cannot realize the problem of Long-distance Control opening and closing door lock.
Technical solution of the present invention is: a kind of door lock, comprise tapered end and with the suitable lock body of tapered end, in described lock body, also slide and be provided with locking bar, in described lock body, also comprise drive unit, wherein:
Described drive unit consists of tracheae, cylinder, the first air valve, the first motor, escape pipe, spring, the second air valve and the second motor, and this cylinder is fixedly mounted on lock body; Described escape pipe is connected with cylinder gas outlet, and described escape pipe is provided with the first air valve, and described first Electric Machine Control the first air valve opens and closes; Described tracheae is provided with the second air valve, and described second Electric Machine Control the second air valve is deposited gas, and described the first motor, the second motor are electrically connected to control module;
Described spring is located in lock body, connects locking bar and lock body;
Described control module is arranged in lock body, and it comprises control module and wireless communication module, and wireless communication module is connected with gateway device communication; Described gateway device and above-mentioned wireless communication module data communication, and connect after Ethernet with above-mentioned cloud server between communication be connected;
In described lock body, be also provided with supply module, described supply module and control module are electrically connected, and provide electric energy for said modules.
In described cloud server, store the coded data of lock body, gateway device, and the authorization key code of intelligent terminal, sending controling instruction is to gateway device;
Described intelligent terminal is connected with above-mentioned cloud server data by internet, sends steering order signal to cloud server, and receives the data message feedback that cloud server sends.
The present invention further improves and is: above-mentioned wireless communication module and gateway device adopt ZigBee, bluetooth, Z-Wave or WIFI wireless communication protocol to carry out data transmission.
The present invention also provides a kind of using method of door lock, it is characterized in that:
Locking method:
Intelligent terminal is connected with cloud server data by internet, send steering order signal to cloud server, cloud server is connected with gateway device data by internet, gateway device is connected with radio communication mold blocks of data again, wireless communication module passes to control module by steering order signal, control module analyzing and processing command signal is also opened the first air valve, cylinder is inflated to tracheae, locking bar move in tapered end time, control module produces the command signal of closing the first air valve, completes and closes the first air valve action;
Unlock method:
Intelligent terminal is connected with cloud server data by internet, send steering order signal to cloud server, cloud server is connected with gateway device data by internet, gateway device is connected with radio communication mold blocks of data again, wireless communication module passes to control module by steering order signal, and control module analyzing and processing command signal is also opened the second air valve.
Further improvement of the present invention is: intelligent terminal sends instruction to cloud server, and is sent to lock body by gateway device, control module record " unblanking ", " shutting " information in this cloud server and lock body, and store
The invention has the beneficial effects as follows: the present invention is simple in structure, easy to use,, can there is not malfunctioning or stuck phenomenon in structure and stable performance, possess following advantage simultaneously:
1, adopt intelligent wireless to control, both realized the Long-distance Control to door lock, also can closely manually control;
2, adopt senior confidential technique, be not easy to be identified and to be cracked, further improve the security of controlled in wireless;
3, adopt wireless recognition technique, realize the self-locking effect to door lock.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is lock body internal drive theory diagram of the present invention;
Fig. 3 is the theory diagram of door lock assembly of the present invention;
Fig. 4 is the flow chart of steps of the using method of door lock of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
As shown in Figure 1,2 and 3, door lock provided by the invention, comprise tapered end 1 and with the suitable lock body 2 of tapered end 1, in described lock body 2, also slide and be provided with locking bar 3, in described lock body 2, also comprise drive unit 4, wherein:
Described drive unit 4 consists of tracheae 41, cylinder 42, the first air valve 43, the first motor 44, escape pipe 45, spring 46, the second air valve 47 and the second motor 48, and this cylinder 42 is fixedly mounted on lock body 2 interior bottom portion; Described escape pipe 45 is fixedly connected with cylinder 42 gas outlets, and described the first air valve 43 is vertically mounted on escape pipe 45, and described the first motor 44 is controlled the first air valve 43 and opened and closed; Described the second air valve 47 is vertically set on tracheae 41, and described the second motor 48 is controlled the second air valve 47 and deposited gas, and described the first motor 44, the second motor 48 are electrically connected to control module 6;
Described spring 46 is located in lock body 2, connects locking bar 3 and lock body 2;
Described the first air valve 43 is that nut is the screw of gear, is vertically spun on escape pipe 45, and its length and external diameter are all greater than the internal diameter of escape pipe 45, can be threaded to the bottom of escape pipe 45;
Air valve pad 49 has been threaded on screw rod between described the second air valve 47 nuts and tracheae 41; Described air valve pad 49 is fixed on tracheae 41, and air valve pad 49 is provided with gas outlet 410;
In preferred embodiment, described spring 46 one end connect locking bars 3, between the other end and lock body 2, are connected pulling force inductor 411, and described pulling force inductor 411 is connected with control module 6 data, in order to judge whether the gas in cylinder 42 is finished; Pulling force inductor 411 is also set a setting simultaneously, in order to judge whether locking bar 3 enters tapered end 1.
Described control module 6 is arranged in lock body 2, and it comprises control module 61 and wireless communication module 62, and wireless communication module 62 is connected with gateway device 7 communications; Described gateway device 7 and above-mentioned wireless communication module 62 data communication, and connect after Ethernet with above-mentioned cloud server 8 between communication be connected;
In described lock body 2, be also provided with supply module 10, described supply module 10 is electrically connected with control module 61, and provides electric energy for said modules.
In described cloud server 8, store the coded data of lock body 2, gateway device 7, and the authorization key code of intelligent terminal 9, sending controling instruction is to gateway device 7;
Described intelligent terminal 9 is connected with above-mentioned cloud server 8 data by internet, sends steering order signal to cloud server 8, and receives the data message feedback that cloud server 8 sends.
In the present embodiment, above-mentioned control module 61 adopts Integral design with wireless communication module 62, select the CC2530F256 of LiaoTI company, it is a 8 super low-power consumption micro controller, ZigBee radio frequency (RF) front end, internal memory and microcontroller on one single chip, have been integrated, it uses 18 MCU(8051), there is the RAM of 128KB flash memory able to programme and 8KB, there is the reception/sending function of ZigBee data.
Described gateway device 7 passes through the data communication of ZigBee communications protocol with above-mentioned wireless communication module 62, and connect after Ethernet with above-mentioned cloud server 8 between communication be connected, each gateway device 7 can corresponding a plurality of wireless communication modules 62, can set up a plurality of subchannels, and can realize automatic adjustment communicator channel, when discovery subchannel is contaminated or take, automatically switching to other subchannels receives and dispatches, arrange like this and can overcome prior art use low frequency signal and occur that channel is contaminated or take and cannot work, affect the defect of communication quality;
In described cloud server 8, store lock body 2, the coded data of gateway device 7, and the authorization key code of the intelligent terminal 9 of corresponding above-mentioned each equipment, this cloud server 8 receives the door lock steering order that intelligent terminal 9 sends, and carry out Decoding Analysis according to instruction, the instruction code of decision gate lock control instruction, and produce corresponding steering order according to judged result, control corresponding gateway device 7 and lock body 2, in addition, the steering order that cloud server 8 can send the intelligent terminal 9 of the mandate receiving is stored, each instruction time that receives/send of record and the coding of intelligent terminal 9, keeper or user can login cloud server 8 and carry out the inquiry of historical data like this, there is trackability.
Above-mentioned door lock principle of work process is as follows:
Manual mode is locked and release: door is in closed condition, on control module 6, also connect fingerprint identification lock, by fingerprint identification lock, to control module 6, send the steering order of locking, after analyzing, control and open the first air valve 43, cylinder 42 is to tracheae 41 inflations, and when locking bar 3 is moved to the left in tapered end 1 under the effect of air pressure, then control module 6 produces the command signal of closing the first air valve 43, complete and close the first air valve 43 actions, realize the object of locking; In like manner, by fingerprint identification lock, to control module 6, send the steering order of release, after analyzing, control and open the second air valve 47, until being threaded to the gas outlet 410 of gas from air valve pad 49, the second air valve 47 valve rods spill, locking bar 3 loses the effect of air pressure left, be subject to the pulling force effect of spring 46 to the right, the head of locking bar 3 detaches tapered end 1 and is drawn in lock body 2, realizes the object of release.
Wireless mode is locked and release: door is in closed condition, the control module 6 being provided with in lock body 2 receives the steering order of locking from intelligent terminal 9, after analyzing, control and open the first air valve 43, cylinder 42 is to tracheae 41 inflations, when locking bar 3 is moved to the left in tapered end 1 under the effect of air pressure, then control module 6 produces the command signal of closing the first air valve 43, completes and closes the first air valve 43 actions, realizes the object of locking; In like manner, the steering order that the control module 6 being provided with in lock body 2 receives from intelligent terminal 9 releases, after analyzing, control and open the second air valve 47, until being threaded to the gas outlet 410 of gas from air valve pad 49, the second air valve 47 valve rods spill, locking bar 3 loses the effect of air pressure left, be subject to the pulling force effect of spring 46 to the right, the head of locking bar 3 detaches tapered end 1 and is drawn in lock body 2, realizes the object of release.
Ought there is in addition illegal molecule to swarm into, open door, because the step of unblanking occurs abnormal, will produce " extremely " data-signal and be transferred to control circuit unit 6, control circuit unit 6 is sent to cloud server 8 by above-mentioned data-signal by gateway device 7 by wireless communication module 62, after cloud server 8 analyzing and processing, send to the intelligent terminal 9 of authorizing in advance, user can recognize pilferage situation by intelligent terminal 9 like this.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.

Claims (4)

1. a door lock, comprise tapered end (1) and with the suitable lock body (2) of tapered end (1), in described lock body (2), also slide and be provided with locking bar (3), it is characterized in that, in described lock body (2), also comprise drive unit (4), wherein:
Described drive unit (4) consists of tracheae (41), cylinder (42), the first air valve (43), the first motor (44), escape pipe (45), spring (46), the second air valve (47) and the second motor (48), and this cylinder (42) is fixedly mounted on lock body (2); Described escape pipe (45) is connected with cylinder (42) gas outlet, and described escape pipe (45) is provided with the first air valve (43), and described the first motor (44) is controlled the first air valve (43) and opened and closed; Described tracheae (41) is provided with the second air valve (47), and described the second motor (48) is controlled the second air valve (47) and deposited gas, and described the first motor (44), the second motor (48) are electrically connected to control module (6);
Described spring (46) is located in lock body (2), connects locking bar (3) and lock body (2);
Described control module (6) is arranged in lock body (2), and it comprises control module (61) and wireless communication module (62), and wireless communication module (62) is connected with gateway device (7) communication; Described gateway device (7) and above-mentioned wireless communication module (62) data communication, and connect after Ethernet with above-mentioned cloud server (8) between communication be connected;
In described lock body (2), be also provided with supply module (10), described supply module (10) and control module (61) are electrically connected, and provide electric energy for said modules.
2. according to the door lock described in claim 1, it is characterized in that: above-mentioned wireless communication module (62) adopts ZigBee, bluetooth, Z-Wave or WIFI wireless communication protocol to carry out data transmission with gateway device (7).
3. a using method for door lock, is characterized in that, step is as follows:
Locking method:
Intelligent terminal (9) is connected with cloud server (8) data by internet, send steering order signal to cloud server (8), cloud server (8) is connected with gateway device (7) data by internet, gateway device (7) is connected with wireless communication module (62) data again, wireless communication module (62) passes to control module (61) by steering order signal, control module (61) analyzing and processing command signal is also opened the first air valve (43), cylinder (42) is inflated to tracheae (41), locking bar (3) move in tapered end (1) time, control module (6) produces the command signal of closing the first air valve (43), complete and close the first air valve (43) action,
Unlock method:
Intelligent terminal (9) is connected with cloud server (8) data by internet, send steering order signal to cloud server (8), cloud server (8) is connected with gateway device (7) data by internet, gateway device (7) is connected with wireless communication module (62) data again, wireless communication module (62) passes to control module (61) by steering order signal, and control module (61) analyzing and processing command signal is also opened the second air valve (47).
4. the using method of door lock according to claim 3, it is characterized in that, also comprise: intelligent terminal (9) sends instruction to cloud server (8), and be sent to lock body (2) by gateway device (7), control module (6) record " unblanking ", " shutting " information in this cloud server (8) and lock body (2), and store.
CN201310718967.9A 2013-12-23 2013-12-23 Door lock and using method thereof Active CN103700173B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105989651A (en) * 2015-02-16 2016-10-05 中兴通讯股份有限公司 Method for controlling electronic lock and cloud terminal device
CN106097491A (en) * 2016-06-03 2016-11-09 广州赛生电子科技有限公司 A kind of Internet of Things smart lock
CN106780905A (en) * 2016-12-28 2017-05-31 重庆金鑫科技产业发展有限公司 Smart lock, smart lock control method and system
CN108643722A (en) * 2018-07-16 2018-10-12 芜湖市联网汇通电子科技有限公司 A kind of logistics lock of the information system management based on Internet of Things
CN108734812A (en) * 2017-04-18 2018-11-02 美的智慧家居科技有限公司 Remote unlocking method, apparatus based on ZigBee and system
CN109403735A (en) * 2018-10-12 2019-03-01 深圳市中科智诚科技有限公司 A kind of safe and reliable intelligent door lock based on block chain technology
CN109707237A (en) * 2019-01-10 2019-05-03 苏州凌云视界智能设备有限责任公司 A kind of new type of safe door lock and its application method
CN110159091A (en) * 2019-07-01 2019-08-23 福建圣旺科技有限公司 A kind of electric antitheft door

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169616A (en) * 1977-09-26 1979-10-02 C. Hager & Sons Hinge Manufacturing Company Valve and cylinder-actuated lock controlled thereby
CN2490271Y (en) * 2001-07-12 2002-05-08 林清坤 Pressure trick lock
CN201826630U (en) * 2010-10-15 2011-05-11 大连量天科技发展有限公司 Pneumatic lock
CN102561826A (en) * 2012-03-07 2012-07-11 南京物联传感技术有限公司 Wireless cloud intelligence lock and working method thereof
CN203299907U (en) * 2013-06-04 2013-11-20 李帆 Multifunctional entrance guard device
CN203644103U (en) * 2013-12-23 2014-06-11 南京物联传感技术有限公司 Door lock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169616A (en) * 1977-09-26 1979-10-02 C. Hager & Sons Hinge Manufacturing Company Valve and cylinder-actuated lock controlled thereby
CN2490271Y (en) * 2001-07-12 2002-05-08 林清坤 Pressure trick lock
CN201826630U (en) * 2010-10-15 2011-05-11 大连量天科技发展有限公司 Pneumatic lock
CN102561826A (en) * 2012-03-07 2012-07-11 南京物联传感技术有限公司 Wireless cloud intelligence lock and working method thereof
CN203299907U (en) * 2013-06-04 2013-11-20 李帆 Multifunctional entrance guard device
CN203644103U (en) * 2013-12-23 2014-06-11 南京物联传感技术有限公司 Door lock

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105989651A (en) * 2015-02-16 2016-10-05 中兴通讯股份有限公司 Method for controlling electronic lock and cloud terminal device
CN106097491A (en) * 2016-06-03 2016-11-09 广州赛生电子科技有限公司 A kind of Internet of Things smart lock
CN106780905A (en) * 2016-12-28 2017-05-31 重庆金鑫科技产业发展有限公司 Smart lock, smart lock control method and system
CN108734812A (en) * 2017-04-18 2018-11-02 美的智慧家居科技有限公司 Remote unlocking method, apparatus based on ZigBee and system
CN108643722A (en) * 2018-07-16 2018-10-12 芜湖市联网汇通电子科技有限公司 A kind of logistics lock of the information system management based on Internet of Things
CN109403735A (en) * 2018-10-12 2019-03-01 深圳市中科智诚科技有限公司 A kind of safe and reliable intelligent door lock based on block chain technology
CN109707237A (en) * 2019-01-10 2019-05-03 苏州凌云视界智能设备有限责任公司 A kind of new type of safe door lock and its application method
CN110159091A (en) * 2019-07-01 2019-08-23 福建圣旺科技有限公司 A kind of electric antitheft door

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Denomination of invention: Door lock and its usage

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