CN108877000B - Wireless intercom system for access control management - Google Patents
Wireless intercom system for access control management Download PDFInfo
- Publication number
- CN108877000B CN108877000B CN201810615840.7A CN201810615840A CN108877000B CN 108877000 B CN108877000 B CN 108877000B CN 201810615840 A CN201810615840 A CN 201810615840A CN 108877000 B CN108877000 B CN 108877000B
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- blind hole
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- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000007726 management method Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
- G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
- G07C9/257—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition electronically
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/27—Individual registration on entry or exit involving the use of a pass with central registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
Abstract
The invention relates to the technical field of access control systems, in particular to a wireless intercom system for access control management, which comprises an intelligent access control, a server and a user terminal which are connected with each other through a network, wherein the intelligent access control comprises an intelligent gate and a first camera, the first camera is arranged above the intelligent gate, the intelligent gate comprises a machine body and a movable plate, a wireless communication module, a controller, a motor, intercom keys, a transmission mechanism and an intercom device are arranged on the machine body, the motor, the transmission mechanism and the movable plate are sequentially in transmission connection, a blind hole is arranged on the top surface of the machine body, the intercom device is arranged in the blind hole, the intercom device comprises a shell, an elastic air bag is arranged between the bottom surface of the shell and the bottom surface of the blind hole, and an air inlet communicated with the elastic air bag is arranged on the side wall of the machine body. The wireless intercom system for the access control management can prevent the intercom device from entering dust, and can realize automatic cleaning after use.
Description
Technical Field
The invention relates to the technical field of access control systems, in particular to a wireless intercom system for access control.
Background
With the progress of life of people, the safety of home residence, office and the like is more and more important, and the safety performance requirement of people on an access control system arranged at a community gate or a community unit gate is also higher and higher. With the development of the internet of things, more and more communities begin to use intelligent access control.
For safety and convenience, the current intelligent entrance guard is provided with a voice intercom function, if visitors visit the intelligent entrance guard, the intelligent entrance guard usually blocks the visitors, then the intelligent entrance guard communicates with residents through voice intercom, the residents can carry out intercom with personnel outside the door through an intercom system, and after the residents confirm, the safety guard releases the visitors. In the existing intelligent voice recognition entrance guard intercom devices, most intercom devices are exposed, dust is often easy to enter in a microphone, a loudspeaker and a keyboard, and therefore the service life of the intercom devices is short.
Disclosure of Invention
The invention aims to provide a wireless intercom system for access control, which can prevent an intercom device from entering dust and realize automatic cleaning after use.
In order to solve the technical problems, the patent provides the following technical scheme:
the wireless intercom system for door control comprises an intelligent door control, a server and a user terminal which are connected with each other through a network, wherein the intelligent door control comprises an intelligent door lock and a first camera, the first camera is arranged above the intelligent door lock, the intelligent door lock comprises a machine body and a movable plate, a wireless communication module, a controller, a motor, an intercom key, a transmission mechanism and an intercom device are arranged on the machine body, the motor, the transmission mechanism and the movable plate are sequentially connected in a transmission mode, a blind hole is formed in the top surface of the machine body, the intercom device is arranged in the blind hole and comprises a shell, an elastic air bag is arranged between the bottom surface of the shell and the bottom surface of the blind hole, an air inlet communicated with the elastic air bag is arranged on the side wall of the machine body, an air outlet communicated with the blind hole is arranged on the shell, one-way valves are arranged on the air inlet and the air outlet, the shell is in compression state with blind hole lateral wall sliding connection, when the shell is arranged in the blind hole, be equipped with the locked groove on the shell lateral wall, blind hole lateral wall and locked groove position correspond department and are equipped with locking mechanical system, locking mechanical system includes the spring bolt, the blind hole lateral wall is equipped with the guiding hole with spring bolt sliding connection, be equipped with the spring between guiding hole bottom and the spring bolt, the spring bolt bottom is equipped with the iron plate, the guiding hole bottom is equipped with the electro-magnet, be equipped with microphone, loudspeaker, second camera, keyboard, display on the shell, intercom button, microphone, loudspeaker, camera, keyboard, display, motor, electro-magnet and wireless communication module all with controller signal connection, the controller is used for switching on the control electro-magnet after the button switches on of talkbacking, the controller is used for switching on keyboard, first camera, the data acquired by the second camera and the microphone are sent to the user terminal through the server, the controller is used for controlling the display to display user input, and the controller is further used for controlling the motor to drive the movable plate to be opened according to the instruction sent by the user terminal.
According to the technical scheme, the intercom device is connected with the blind hole in a sliding mode through the shell and the blind hole, and the intercom device can be hidden in the blind hole through the lock groove and the lock tongue, so that when the intercom device is not used, the second camera, the microphone, the display, the loudspeaker, the keyboard and the like are protected from dust pollution, accidental damage of equipment is avoided, meanwhile, the elastic air bag at the bottom of the shell can be ejected out after the lock tongue is separated from the lock groove, the intercom device is not required to be pulled out manually, after the user finishes using, the intercom device is pressed down, air of the air bag is discharged from the air outlet, air is blown out of the blind hole, dust on the intercom device is blown out, automatic cleaning after use is achieved, data of the first camera and the second camera are transmitted simultaneously, and a user can judge identity of a visitor according to the data of the two cameras, so that safety is achieved.
Further, still be equipped with the code scanning device that is used for scanning the express delivery single number on the organism, code scanning device and controller signal connection, the controller can be with the single number data upload that scans for the server, the server includes third party express delivery interface module, third party express delivery interface module can obtain addressee's data from third party express delivery platform through single number data, the server still includes matching module, matching module can match with the resident in the district according to addressee's data, if match successfully, returns resident information to intelligent entrance guard, and the controller initiates intercom communication request to corresponding user terminal according to resident information.
After the express delivery is sent, the user is required to be notified by the express delivery person to make a call, in the scheme, through the express delivery list number, the user can directly communicate with the user terminal, and then the delivery matters of the express delivery, such as going upstairs, paying and the like, are communicated, after the communication is finished, the user directly and remotely opens the door through the user terminal, and the whole process is free of security participation and is simple and convenient.
Further, intelligent entrance guard still includes the intelligent express delivery cabinet of being connected with the organism, every check of intelligent express delivery cabinet all is equipped with the dodge gate that can open on the side that is located the inside and outside both sides of intelligent floodgate machine.
Can put into the express delivery cabinet with the express delivery when the user is inconvenient, current express delivery cabinet all need get into the district and go to deposit, in this scheme, can put into the express delivery cabinet with the express delivery if the express delivery person can not contact the user through intercom device, all set up the dodge gate on the lateral wall that the check is located the inside and outside both sides of entrance guard can make the express delivery person put into the express delivery from outside, and need not to get into the district.
Further, the human face recognition module is further arranged in the machine body and used for recognizing the identity of a user when the user passes through the access control, and the controller is used for controlling the movable plate to be opened after the user passes through the access control. The entrance guard is automatically opened through face recognition, and the user is not required to operate simply and conveniently.
Further, the controller is further used for uploading the identity of the user to the server after the face recognition module is used for recognizing the identity of the user, the third-party express delivery interface module can acquire whether the user has express delivery in the intelligent express delivery cabinet according to the identity of the user, and if the user has express delivery in the intelligent express delivery cabinet, the server sends a command to the intelligent access control, so that the intelligent access control reminds the user through the loudspeaker. The condition of forgetting to take the express delivery often takes place in daily life, and in this application, with express delivery cabinet setting in entrance guard department and through the cooperation of face identification and the last third party interface of server, can remind the user that needs to take the express delivery when the user passes through the entrance guard, and then prevent that the user from forgetting to take the express delivery.
Further, the user terminal is a mobile terminal. The mobile terminal is convenient to carry, and a user can remotely carry out operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a wireless intercom system for door access management according to the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals illustrate: organism 1, fly leaf 2, intercom 3, spring bolt 4, spring 5, iron plate 6, elasticity gasbag 7, display 8, second camera 9, keyboard 10, loudspeaker 11, gas outlet 12.
As shown in fig. 1, the wireless intercom system for door access management of this embodiment includes an intelligent door access, a server and a user terminal that are connected to each other through a network.
Wherein the intelligent gate comprises an intelligent gate and a first camera, the first camera is arranged above the intelligent gate, the first camera is arranged on a wall around the intelligent gate through a holder, the first camera is preferably a wide-angle camera, the intelligent gate comprises a machine body 1 and a movable plate 2, a wireless communication module, a controller, a motor, an intercom key, a transmission mechanism and an intercom device 3 are arranged on the machine body 1, the motor, the transmission mechanism and the movable plate 2 are sequentially connected in a transmission way, the transmission mechanism comprises a first gear fixedly arranged on the motor and a second gear fixedly arranged on the movable plate, the first gear is meshed with the second gear, the controller is used for controlling the motor to be opened or closed, the movable plate 2 can be controlled to be opened or closed, a round blind hole is formed in the top surface of the machine body 1, the inside of the blind hole is provided with an intercom device 3, the intercom device 3 comprises a shell, an elastic air bag 7 is arranged between the bottom surface of the shell and the bottom surface of the blind hole, an air inlet communicated with the elastic air bag 7 is arranged on the side wall of the machine body 1, an air outlet 12 communicated with the blind hole is arranged on the shell, both the air inlet and the air outlet 12 are provided with one-way valves, a slide bar is arranged on the shell, a vertical chute is arranged on the side wall of the blind hole, the shell is in sliding connection with the side wall of the blind hole, when the shell is positioned in the blind hole, the elastic air bag 7 is in a compressed state, a locking groove is arranged on the side wall of the shell, a locking mechanism is arranged at the position of the side wall of the blind hole corresponding to the locking groove and comprises a lock tongue 4, a guide hole is arranged on the side wall of the blind hole and is in sliding connection with the lock tongue 4, a spring 5 is arranged between the bottom of the guide hole and the lock tongue 4, an iron block 6 is arranged at the bottom of the lock tongue 4, an electromagnet is arranged at the bottom of the guide hole, and a microphone, a loudspeaker 11 and a second camera 9 are arranged on the shell Keyboard 10, display 8, the button of talkbacking, the microphone, loudspeaker 11, the camera, keyboard 10, display 8, motor, electro-magnet and wireless communication module all are connected with the controller signal, the controller is used for switching on the control electro-magnet after the button of talkbacking switches on, the controller is used for sending the data that keyboard 10, first camera, second camera 9 and microphone gathered to user terminal through the server, the controller still with control display 8 demonstration keyboard input, the controller still is used for driving fly leaf 2 according to the instruction control motor that user terminal sent and opens.
The machine body 1 is further provided with a code scanning device for scanning the express bill number, the code scanning device is in signal connection with the controller, the controller can upload scanned bill number data to the server, the server comprises a third-party express delivery interface module, the third-party express delivery interface module can acquire recipient data from a third-party express delivery platform through the bill number data, the server further comprises a matching module, the matching module can match householder in a community according to the recipient data, if matching is successful, household information is returned to the intelligent entrance guard, and the controller initiates an intercom communication request to a corresponding user terminal according to the household information. The intelligent access control still includes the intelligent express delivery cabinet of being connected with organism 1, and every check of intelligent express delivery cabinet all is equipped with the dodge gate that can open on the side that is located the inside and outside both sides of intelligent floodgate machine.
The human body 1 is also internally provided with a human face recognition module which is used for recognizing the identity of a user when the user passes through the entrance guard, and the controller is used for controlling the movable plate 2 to be opened after the user passes through the entrance guard. The entrance guard is automatically opened through face recognition, and the user is not required to operate simply and conveniently. The controller is also used for uploading the identity of the user to the server after the face recognition module passes the recognition, the third-party express interface module can acquire whether the user has express in the intelligent express cabinet according to the identity of the user, and if the user has express in the intelligent express cabinet, the controller sends a command to the intelligent access control, so that the intelligent access control can wake the user through the loudspeaker 11.
In this embodiment, the controller is a single-chip microcomputer, preferably a K60 series single-chip microcomputer, the second camera 9 adopts an OV7670 camera, the display 8 adopts a liquid crystal display, the keyboard 10 adopts an array formed by micro switches, the code scanning device adopts an existing bar code scanning device, and the code scanning device mainly comprises a CCD linear camera, the intelligent express cabinet is modified on the basis of the existing express cabinet, and front and rear two corresponding movable doors are arranged on each grid.
In the technical scheme of this embodiment, intercom device 3 passes through casing and blind hole sliding connection, and through locked groove and spring bolt 4, make intercom device 3 can hide in the blind hole, and then when not using, protection second camera 9, the microphone, display 8, loudspeaker 11 and keyboard 10 etc. do not receive dust pollution, avoid the unexpected damage of equipment, simultaneously the elasticity gasbag 7 of casing bottom, can pop out intercom device 3 after spring bolt 4 and locked groove separation, need not the manual pulling out, after the user finishes using, will intercom device 3 is pushed down, the gas of gasbag is discharged from gas outlet 12, blow out outward to the blind hole, blow out the dust on the intercom device 3, realize automatic clearance after the use, the controller is when carrying out dialogue communication with the user terminal, the data of first camera of simultaneous transmission and second camera 9, the user can judge visitor's identity jointly according to the data of two cameras, it is safer.
After the express delivery is sent, the user is required to be notified by the express delivery person to make a call, in the scheme, through the express delivery list number, the user can directly communicate with the user terminal, and then the delivery matters of the express delivery, such as going upstairs, paying and the like, are communicated, after the communication is finished, the user directly and remotely opens the door through the user terminal, and the whole process is free of security participation and is simple and convenient.
Can put into the express delivery cabinet with the express delivery when the user is inconvenient, current express delivery cabinet all need get into the district and deposit, in this scheme, can put into the express delivery cabinet with the express delivery if the express delivery person can not contact the user through intercom device 3, all set up the dodge gate on the lateral wall that the check is located the inside and outside both sides of entrance guard can make the express delivery person put into the express delivery from outside, and need not to get into the district. The condition of forgetting to take the express delivery often takes place in daily life, and in this application, with express delivery cabinet setting in entrance guard department and through the cooperation of face identification and the last third party interface of server, can remind the user that needs to take the express delivery when the user passes through the entrance guard, and then prevent that the user from forgetting to take the express delivery.
The foregoing is merely exemplary of the present invention, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this invention pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present invention, with the ability of these skilled persons to perfect and practice this invention, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. A wireless intercom system for entrance guard management, its characterized in that: the intelligent gate control system comprises an intelligent gate control, a server and a user terminal which are connected with each other in a network mode, wherein the intelligent gate control system comprises an intelligent gate and a first camera, the first camera is arranged above the intelligent gate, the intelligent gate comprises a machine body and a movable plate, a wireless communication module, a controller, a motor, an intercom key, a transmission mechanism and an intercom device are arranged on the machine body, the motor, the transmission mechanism and the movable plate are sequentially connected in a transmission mode, a blind hole is arranged on the top surface of the machine body, the intercom device is arranged in the blind hole, the intercom device comprises a shell, an elastic air bag is arranged between the bottom surface of the shell and the bottom surface of the blind hole, an air inlet communicated with the elastic air bag is arranged on the side wall of the machine body, an air outlet communicated with the blind hole is arranged on the shell, one-way valves are arranged on the air inlet and the air outlet, the shell is in sliding connection with the side wall of the blind hole, when the shell is arranged in the blind hole, the elastic air bag is in a compressed state, a locking groove is formed in the side wall of the shell, a locking mechanism is arranged at the position, corresponding to the locking groove, of the side wall of the blind hole, the locking mechanism comprises a lock tongue, a guide hole which is in sliding connection with the lock tongue is formed in the side wall of the blind hole, a spring is arranged between the bottom of the guide hole and the lock tongue, an iron block is arranged at the bottom of the lock tongue, an electromagnet is arranged at the bottom of the guide hole, a microphone, a loudspeaker, a second camera, a keyboard and a display are arranged on the shell, an intercom key, the microphone, the loudspeaker, a first camera, the second camera, the keyboard, the display, a motor, the electromagnet and a wireless communication module are all in signal connection with a controller, the controller is used for controlling the electromagnet to be conducted after the intercom key is conducted, and the controller is used for controlling the keyboard, the first camera to conduct the first camera, the data acquired by the second camera and the microphone are sent to the user terminal through the server, the controller is further used for controlling the display to display the input of the keyboard, and the controller is further used for controlling the motor to drive the movable plate to be opened according to the instruction sent by the user terminal;
the display adopts a liquid crystal display screen, and the keyboard adopts an array formed by micro switches.
2. The wireless intercom system for door access management of claim 1 wherein: the intelligent entrance guard system is characterized in that the machine body is further provided with a code scanning device for scanning the express delivery single number, the code scanning device is in signal connection with the controller, the controller can upload scanned single number data to the server, the server comprises a third party express delivery interface module, the third party express delivery interface module can acquire receiver data from a third party express delivery platform through the single number data, the server further comprises a matching module, the matching module can match with householder in a community according to the receiver data, if matching is successful, household information is returned to the intelligent entrance guard, and the controller initiates a talkback communication request to a corresponding user terminal according to the household information.
3. The wireless intercom system for door access management of claim 2 wherein: the intelligent access control system is characterized in that the intelligent access control system further comprises an intelligent express cabinet connected with the machine body, and movable doors capable of being opened are arranged on the side faces of the inner side and the outer side of the intelligent gate in each grid of the intelligent express cabinet.
4. A wireless intercom system for use in door access management as in claim 3 wherein: the face recognition module is further arranged in the machine body and used for recognizing the identity of a user when the user passes through the entrance guard, and the controller is used for controlling the movable plate to be opened after the user passes through the face recognition module.
5. The wireless intercom system for door access management as in claim 4 wherein: the controller is further used for uploading the identity of the user to the server after the face recognition module passes the recognition, the third-party express delivery interface module can acquire whether the user has express delivery in the intelligent express delivery cabinet according to the identity of the user, and if so, the server sends a command to the intelligent access control, so that the intelligent access control reminds the user through the loudspeaker.
6. The wireless intercom system for door access management of claim 1 wherein: the user terminal is a mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615840.7A CN108877000B (en) | 2018-06-14 | 2018-06-14 | Wireless intercom system for access control management |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615840.7A CN108877000B (en) | 2018-06-14 | 2018-06-14 | Wireless intercom system for access control management |
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| Publication Number | Publication Date |
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| CN108877000A CN108877000A (en) | 2018-11-23 |
| CN108877000B true CN108877000B (en) | 2024-02-27 |
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| CN201810615840.7A Active CN108877000B (en) | 2018-06-14 | 2018-06-14 | Wireless intercom system for access control management |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360318A (en) * | 2018-12-10 | 2019-02-19 | 中宏恒大智能科技工程有限公司 | A kind of intelligent building access control system |
| CN111784895A (en) * | 2020-06-17 | 2020-10-16 | 安徽超清科技股份有限公司 | Face recognition's entrance guard security protection device |
| CN113691784B (en) * | 2021-10-27 | 2021-12-24 | 南通京希信息技术有限公司 | High-safety intelligent visual intercom device |
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| CN207184665U (en) * | 2017-09-25 | 2018-04-03 | 杭州凌望建筑科技有限公司 | A kind of dynamic human face identification intelligent is deployed to ensure effective monitoring and control of illegal activities early warning camera |
| CN207424969U (en) * | 2017-10-16 | 2018-05-29 | 蔡子跃 | A kind of internet visible intercom door inhibition |
| CN108146952A (en) * | 2017-12-15 | 2018-06-12 | 王曦达 | Share express delivery delivery system in multifunctional stereo formula community |
| CN108053531A (en) * | 2017-12-21 | 2018-05-18 | 詹询 | A kind of automatic encrypted building gate control system and method |
| CN208207954U (en) * | 2018-06-14 | 2018-12-07 | 重庆慧居智能电子有限公司 | Wireless intercom system for entrance guard management |
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