CN213069922U - Intelligent entrance guard based on thing networking - Google Patents
Intelligent entrance guard based on thing networking Download PDFInfo
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- CN213069922U CN213069922U CN202021349806.9U CN202021349806U CN213069922U CN 213069922 U CN213069922 U CN 213069922U CN 202021349806 U CN202021349806 U CN 202021349806U CN 213069922 U CN213069922 U CN 213069922U
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Abstract
The application discloses an intelligent entrance guard based on the Internet of things, which comprises a door frame, a door body, a control panel, a control box, a camera, an electromagnetic lock and an electric entrance guard; one side of the door body is hinged with the door frame; the control panel is fixedly arranged on the outer side of the door body; the control box is fixedly arranged on a wall body on one side of the inner side of the door body; the camera is arranged above the control panel and used for collecting image data of a door opener; the electromagnetic lock is fixedly arranged on a side vertical surface of the door body, which is attached to the door frame; the electric access control device is arranged on the upper part of the inner side of the door body and is close to one side hinged with the door frame; the control panel comprises a recognition device for collecting the identity information data of the door opening person; the control box comprises a control module and a wireless communication module; the control module is electrically connected with the camera, the electromagnetic lock, the electric access control device, the identification device and the wireless communication module for control. The application has high safety factor and is convenient for the opening of the vulnerable groups such as the old, children and the like.
Description
Technical Field
The application relates to the technical field of entrance guard, in particular to an intelligent entrance guard based on the Internet of things.
Background
The entrance guard refers to the forbidden right of the door and is the guard and precaution against the door. The "door" herein, in a broad sense, includes various passages that can pass, including a door through which people pass, a door through which vehicles pass, and the like. Thus, the access control includes a vehicle access control. In yard management applications, vehicle access is an important means of vehicle management. The entrance guard safety management system is a modern safety management system, it integrates microcomputer automatic identification technology and modern safety management measures into one body, it relates to many new technologies of electronics, machinery, optics, computer technology, communication technology and biological technology. The method is an effective measure for realizing safety precaution management at the entrance and exit of important departments. The intelligent control system is suitable for various essential departments, such as banks, hotels, machine rooms, military machine depots, essential rooms, offices, intelligent districts, factories and the like.
The internet of things is an information bearing body based on the internet, a traditional telecommunication network and the like, all common physical objects which can be independently addressed form an interconnected and intercommunicated network, and the internet of things is widely applied and has a prominent application prospect in the aspect of access control.
Thereby traditional entrance guard easily suffers mechanical damage and loses effect, and simultaneously, the closure of the door body adopts the elastic component to realize its automatic closed function more, and is harder when opening.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide an intelligent entrance guard with high safety factor, labor-saving opening and automatic closing.
The intelligent entrance guard based on the Internet of things comprises a door frame, a door body, a control panel, a control box, a camera, an electromagnetic lock and an electric entrance guard; one side of the door body is hinged with the door frame; the control panel is fixedly arranged on the outer side of the door body; the control box is fixedly arranged on a wall body on one side of the inner side of the door body; the camera is arranged above the control panel, is fixedly connected with the door body and is used for collecting image data of a door opener; the electromagnetic lock is fixedly arranged on a side vertical surface of the door body, which is attached to the door frame; the electric access control device is arranged on the upper part of the inner side of the door body, is close to one side hinged with the door frame, and is used for automatically opening or closing the door body;
the control panel comprises an identification device which is fixedly arranged on the front side of the control panel and is used for collecting identity information data of door opening personnel; the control box comprises a control module and a wireless communication module; the wireless communication module is used for establishing communication connection with a monitoring host of the monitoring center and transmitting data; the control module is electrically connected with the camera, the electromagnetic lock, the electric access control device, the identification device and the wireless communication module for control.
Preferably, the intelligent entrance guard based on the internet of things further comprises an infrared probe, wherein the infrared probe is used for detecting whether a person is in a front fan-shaped area of the door body; the infrared probe is fixedly arranged on the top of the door frame.
Preferably, the control panel further comprises a voice speaker, a microphone and a calling key which are all fixedly arranged on the front side of the control panel; the calling key is used for carrying out communication connection with a video telephone installed in a resident after being pressed by a door opener; the voice loudspeaker and the microphone are used for carrying out voice communication between door opening personnel and residents; the voice loudspeaker is also used for broadcasting prompt tones; the voice loudspeaker, the microphone and the calling key are electrically connected with the control module.
Preferably, the front side of the control box is provided with a door opening button which is electrically connected with the control module and used for opening the door body by a door opening person on the inner side of the door body.
Preferably, the electric access control device comprises a shell, a first connecting rod, a second connecting rod and a mounting seat; the shell is fixedly arranged on the upper part of the inner side of the door body; a driving motor and a driven shaft are fixedly arranged in the shell; a coaxial first helical gear is fixedly connected to an output shaft of the driving motor; a coaxial second bevel gear is fixedly arranged on the outer side of the driven shaft; the first bevel gear is meshed with the second bevel gear; the bottom end of the driven shaft is rotatably connected with the bottom plate of the shell, and the top end of the driven shaft penetrates through the top plate of the shell and is fixedly connected with one end of the first connecting rod; the driven shaft is vertical to the axis of the first connecting rod; one end of the second connecting rod is rotatably connected with one end of the first connecting rod, which is far away from the driven shaft, and the other end of the second connecting rod is rotatably connected with the mounting seat; the mounting seat is fixedly connected with the door frame; when the door body is in a closed state, an included angle between the first connecting rod and the second connecting rod is an acute angle; the driving motor is electrically connected with the control module.
Preferably, the electric access control device further comprises a clutch device fixedly arranged inside the shell and used for locking or unlocking the first bevel gear and/or the second bevel gear; the clutch device is electrically connected with the control module.
Preferably, the control panel further comprises a work indicator light and a backlight; the working indicator light is fixedly arranged on the front side of the control panel and used for prompting the working state of the intelligent access control; the backlight lamp is fixedly arranged in the control panel and used for providing a light source for the control panel under a dim condition so as to facilitate the correct operation of a door opening person.
Preferably, the plurality of call keys are respectively corresponding to the video telephones installed in different households.
Preferably, the identification device is a wireless card reader.
Preferably, handles are fixedly arranged on two sides of the door body.
Compared with the prior art, the beneficial effects of this application are:
according to the intelligent entrance guard based on the Internet of things, the door body can be automatically opened or closed by arranging the electric entrance guard, so that the entrance of vulnerable groups such as the old, children and the like is facilitated; by arranging the electromagnetic lock and the electric access control at the same time, double protection is achieved, and the safety coefficient of the electromagnetic lock and the electric access control is improved; identity information acquisition is carried out to the personnel that open the door through recognition device and camera, carries out identity information's contrast through the monitoring host computer, improves intelligent entrance guard's security.
It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram of a system connection structure of an intelligent access control based on the internet of things according to an embodiment of the present application;
fig. 2 is an outside structural schematic diagram of an intelligent access control based on the internet of things according to an embodiment of the present application;
fig. 3 is a schematic diagram of an inner side structure of an intelligent access control based on the internet of things according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of the control panel of FIG. 2;
FIG. 5 is a schematic structural diagram of the intelligent door control system of FIG. 3;
FIG. 6 is an enlarged schematic view of portion A of FIG. 5;
reference numbers in the figures: 1 doorframe. The system comprises a door body 2, a control panel 3, a control box 4, a camera 5, an electromagnetic lock 6, an electric access control 7 and an infrared probe 8;
21 a handle;
31 identification device, 32 voice loudspeaker, 33 microphone, 34 calling key, 35 working indicator light and 36 backlight lamp;
41 control module, 42 wireless communication module, 43 door opening button;
71 casing, 72 driving motor, 73 driven shaft, 74 first bevel gear, 75 second bevel gear, 76 first connecting rod, 77 second connecting rod, 78 mounting seat and 79 clutch device;
791 movable rod, 792 silicon steel sheet and 793 torsion spring.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 6, an embodiment of the present application provides an intelligent access control based on the internet of things, including a door frame 1, a door body 2, a control panel 3, a control box 4, a camera 5, an electromagnetic lock 6, and an electric access control 7; one side of the door body 2 is hinged with the door frame 1; the control panel 3 is fixedly arranged on the outer side of the door body 2; the control box 4 is fixedly arranged on a wall body on one side of the inner side of the door body 2; the camera 5 is arranged above the control panel 3, is fixedly connected with the door body 2 and is used for collecting image data of a door opener; the electromagnetic lock 6 is fixedly arranged on the side vertical surface of the door body 2, which is attached to the door frame 1; the electric access control 7 is arranged at the upper part of the inner side of the door body 2 close to one side hinged with the door frame 1 and is used for automatically opening or closing the door body 2;
the control panel 3 comprises an identification device 31 fixedly arranged on the front side of the control panel 3, and the identification device 31 is a wireless card reader and is used for collecting identity information data of a person opening the door; the control box 4 comprises a control module 41 and a wireless communication module 42; the wireless communication module 42 is used for establishing communication connection with a monitoring host of the monitoring center and transmitting data; the control module 41 is electrically connected with the camera 5, the electromagnetic lock 6, the electric door 7, the recognition device 31 and the wireless communication module 42 for control.
In this embodiment, a door opener sticks a carried magnetic card to the identification device 31, the identification device 31 identifies identity information in the magnetic card, the control module 41 controls the camera 5 to collect image information of the door opener, the wireless communication module 42 sends the identity information and the image information to a monitoring host of a monitoring center, the monitoring host compares the identity information and the image information and transmits comparison result information to the control module 41 through the wireless communication module 42, when the comparison result information is consistent, the control module 41 controls the electromagnetic lock 6 to be powered off and controls the electric access control 7 to open the door body 2, and the door opener can enter; when the comparison results are inconsistent, the control module 41 does not transmit signals to the electromagnetic lock 6 and the electric access control 7, the electromagnetic lock and the electric access control are not opened, and people cannot enter the electromagnetic lock and the electric access control; by arranging the electromagnetic lock 6 and the electric access control 7, the safety coefficient of the intelligent access control is improved, the electric access control 7 can automatically open the door body 2, and the old, children and other weak groups can conveniently enter the intelligent access control; the control box 4 is arranged on the wall body on the inner side of the door body 2, so that the intelligent access control device plays a role in protection even if other people cause mechanical damage to the control panel 3; gather the image information of the personnel that open the door through camera 5, compare with the identity information of magnetic card, when the effectual magnetic card that prevents is lost, irrelevant personnel picked up the magnetic card, opened the door, caused the potential safety hazard.
In a preferred embodiment, the intelligent entrance guard based on the internet of things further comprises an infrared probe 8, which is used for detecting whether a person is in a front fan-shaped area of the door body 2; the infrared probe 8 is fixedly arranged on the top of the door frame 1. Referring to fig. 1 to 3, in this embodiment, an infrared probe 8 is arranged to detect a sector area in front of the door body, and the infrared probe 8 is fixedly arranged on the top of the door frame 1 and irradiates obliquely downward; when the infrared probe 8 detects that a person enters a sector area in front of the door body 2, a signal is sent to the control module 41, the control module 41 controls the camera 5 to acquire images of the person approaching the door, the door opening efficiency is improved, meanwhile, the camera 5 is not required to be in a monitoring state all the time, and the storage pressure is reduced; when the door body 2 is opened or closed, whether people and obstacles exist in the fan-shaped area closed by the door body 2 can be monitored through the infrared probe 8, and when people or obstacles exist, the control module 41 controls the electric access control 7 to stop working, so that personal injury or damage to the electric access control 7 due to obstruction of the obstacles in the closing process of the door body 2 is prevented.
In a preferred embodiment, the control panel further comprises a voice speaker 32, a microphone 33 and a call button 34, all of which are fixedly arranged on the front side of the control panel 3; the calling key 34 is used for carrying out communication connection with a video telephone installed in a resident after being pressed by a door opener; a plurality of call keys 34 are provided, which correspond to the video telephones installed in different households respectively; the voice loudspeaker 32 and the microphone 33 are used for carrying out voice communication between door opening personnel and residents; the voice speaker 32 is also used for broadcasting prompt tones; the voice speaker 32, the microphone 33 and the call button 34 are electrically connected to the control module 41. Referring to fig. 2 and 5, in this embodiment, when an external person needs to open the door, the call key 34 can be pressed to communicate with a videophone in the resident, the camera 5 sends image information of the external person to the videophone in real time, and the resident can remotely control the intelligent door access to open through the videophone; the calling key 34 is provided with a plurality of keys corresponding to video telephones installed in different households; the voice loudspeaker 32 and the microphone 33 can realize voice communication between the outside people and the resident; the voice speaker 32 is also used to play an alarm or warning tone, for example, to indicate that the door is opened legally or illegally. Due to the complex terrain in the house, the wireless communication signal transmission is unstable, and the intelligent access control and the video telephone can be in wired connection through the optical fiber.
In a preferred embodiment, the front side of the control box is provided with a door opening button 43, which is electrically connected with the control module 41 and is used for a door operator to open the door body 2 at the inner side thereof. Referring to fig. 3, in this embodiment, when a resident or an external person needs to go outside from inside the building, the control module 41 can send a signal to the control module 41 by pressing the door opening button 43, and the control module 41 controls the electromagnetic lock 6 to be powered off and controls the electric door access 7 to open the door 2, so that the operation is convenient and fast, and the user does not need to swipe a card again or remotely control the door through a video phone.
In a preferred embodiment, the electric access control includes a housing 71, a first connecting rod 76, a second connecting rod 77, and a mounting seat 78; the shell is fixedly arranged on the upper part of the inner side of the door body; a driving motor 72 and a driven shaft 73 are fixedly arranged in the shell 71; a coaxial first bevel gear 74 is fixedly connected to an output shaft of the driving motor 72; a coaxial second bevel gear 75 is fixedly arranged on the outer side of the driven shaft 73; the first bevel gear 74 meshes with the second bevel gear 75; the bottom end of the driven shaft 73 is rotatably connected with the bottom plate of the shell 71, and the top end of the driven shaft penetrates through the top plate of the shell 71 and is fixedly connected with one end of a first connecting rod 76; the driven shaft 73 is perpendicular to the axis of the first connecting rod 76; one end of the second connecting rod 77 is rotatably connected with one end of the first connecting rod 76 away from the driven shaft 73, and the other end is rotatably connected with the mounting seat 78; the mounting seat 78 is fixedly connected with the door frame 1; when the door body 2 is in a closed state, an included angle between the first connecting rod 76 and the second connecting rod 77 is an acute angle; the drive motor 72 is electrically connected to the control module 41. Referring to fig. 6, in this embodiment, when the identity of the door opening person is verified consistently, the control module 41 controls the electromagnetic lock 6 to be powered off, so that the electromagnetic lock does not work any more, and then controls the driving motor 72 to rotate, so as to drive the first helical gear 74 to rotate, the first helical gear 74 drives the second helical gear 75 to rotate, the second helical gear 75 drives the driven shaft 73 to rotate, the driven shaft drives the first connecting rod 76 to rotate around the driven shaft 73, one end of the second connecting rod 77 is rotatably connected to the mounting seat 78, the other end of the second connecting rod 77 is rotatably connected to the first connecting rod 76, and when the first connecting rod 76 rotates, the second connecting rod 77 is driven to rotate, so that the included angle between the first connecting rod 76 and the second connecting rod 77 is increased, the; when the door body 2 is closed, the driving motor 72 rotates reversely, the transmission is far away from the door body 2 and is the same as the door body 2 is opened, and the included angle between the first connecting rod 76 and the second connecting rod 77 is reduced, so that the door body 2 is driven to be closed, a door opening person is not required to manually open the door, and the door is convenient for old people and children to come in and go out.
In a preferred embodiment, the electric access control 7 further comprises a clutch 79 fixedly disposed inside the housing 71 for locking or unlocking the first bevel gear 74 and/or the second bevel gear 75; the clutch 79 is electrically connected to the control module 41. Referring to fig. 6, in this embodiment, the first bevel gear 74 and/or the second bevel gear 75 can be locked by the clutch device 79, so as to prevent the door body 2 from being violently opened when the electromagnetic lock 6 is mechanically damaged; the clutch device 79 comprises a movable rod 791, a silicon steel sheet 792 and a torsion spring 793; one end of the movable rod is hinged with the shell 71, a torsion spring 793 is arranged at the hinged position, one end, far away from the torsion spring 793, of the movable rod 791 is driven to be far away from the first bevel gear 74, a silicon steel sheet 792 is fixedly arranged at one end, far away from the torsion spring 793, of the movable rod 791, the silicon steel sheet 792 can generate magnetism after being electrified, the clutch device 79 is electrically connected with the control module 41, when the control module 41 controls the silicon steel sheet 792 to be electrified, the silicon steel sheet is attached to the first bevel gear 74 under the action of the magnetism, the first bevel gear 74 is locked and prevented from rotating, and therefore the effect of preventing the door from being; when the door body 2 needs to be opened, the control module 41 controls the silicon steel sheet 792 to be powered off, the magnetism disappears, the silicon steel sheet 792 is far away from the first helical gear 74 under the driving of the torsion spring 793, and the door body 2 can be normally opened; when the power is cut off, the clutch device 79 and the electromagnetic lock 6 lose the action, the door body 2 can be pushed open by force, and the situation that the door body 2 cannot be opened and personnel cannot normally come in and go out when the power is cut off is prevented.
In a preferred embodiment, the control panel 3 further comprises a work indicator light 35 and a backlight 36; the working indicator light 35 is fixedly arranged on the front side of the control panel 3 and used for prompting the working state of the intelligent access control; the backlight 36 is fixedly disposed inside the control panel 3 and is used for providing a light source for the control panel 3 in a dim condition so as to facilitate the correct operation of a door opener. Referring to fig. 2 and 5, in this embodiment, the working indicator light 35 may have two colors or multiple colors, such as red and green, when the intelligent door access works normally, the green light is normally on, the door opener opens the door, and when the identity information is consistent, the green light flashes to indicate that the door 2 is about to open; when the identity information of the door opening personnel is inconsistent, the red indicating lamp is turned on to warn. In order to prevent the door opener or the outside person from operating by mistake and pressing the wrong call button 34 to disturb the resident under dim conditions, a backlight 36 may be disposed inside the control panel 3, and the call button 34 and the identification device 31 may be partially made of a light-transmitting material, so as to facilitate the door opener and the outside person to operate under dim conditions.
In a preferred embodiment, handles 21 are fixedly arranged on both sides of the door body 2. Referring to fig. 2 to 4, in this embodiment, the handle 21 is provided to facilitate the opening or closing of the door 2 in the power failure state.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An intelligent access control based on the Internet of things is characterized by comprising a door frame, a door body, a control panel, a control box, a camera, an electromagnetic lock and an electric access control; one side of the door body is hinged with the door frame; the control panel is fixedly arranged on the outer side of the door body; the control box is fixedly arranged on a wall body on one side of the inner side of the door body; the camera is arranged above the control panel, is fixedly connected with the door body and is used for collecting image data of a door opening person; the electromagnetic lock is fixedly arranged on a side vertical surface where the door body is attached to the door frame; the electric access control device is arranged on the upper part of the inner side of the door body, is close to one side hinged with the door frame, and is used for automatically opening or closing the door body;
the control panel comprises an identification device which is fixedly arranged on the front side of the control panel and is used for collecting identity information data of door opening personnel; the control box comprises a control module and a wireless communication module; the wireless communication module is used for establishing communication connection with a monitoring host of the monitoring center and transmitting data; the control module is electrically connected with the camera, the electromagnetic lock, the electric access control, the identification device and the wireless communication module for control.
2. The intelligent entrance guard based on the internet of things of claim 1, further comprising an infrared probe, wherein the infrared probe is used for detecting whether a person exists in a front fan-shaped area of the door body; the infrared probe is fixedly arranged at the top of the door frame.
3. The intelligent entrance guard based on the internet of things of claim 1, wherein the control panel further comprises a voice loudspeaker, a microphone and a calling key which are fixedly arranged on the front side of the control panel; the calling key is used for carrying out communication connection with a video telephone installed in a resident after being pressed by a door opener; the voice loudspeaker and the microphone are used for carrying out voice communication between door opening personnel and residents; the voice loudspeaker is also used for broadcasting prompt tones; the voice loudspeaker, the microphone and the calling key are all electrically connected with the control module.
4. The intelligent entrance guard based on the Internet of things of claim 1, wherein a door opening button is arranged on the front side of the control box, is electrically connected with the control module and is used for a door opening person to open the door body on the inner side of the door body.
5. The intelligent entrance guard based on the Internet of things of any one of claims 1 to 4, wherein the electric entrance guard comprises a shell, a first connecting rod, a second connecting rod and a mounting seat; the shell is fixedly arranged on the upper part of the inner side of the door body; a driving motor and a driven shaft are fixedly arranged in the shell; a coaxial first helical gear is fixedly connected to an output shaft of the driving motor; a coaxial second bevel gear is fixedly arranged on the outer side of the driven shaft; the first bevel gear is meshed with the second bevel gear; the bottom end of the driven shaft is rotatably connected with the bottom plate of the shell, and the top end of the driven shaft penetrates through the top plate of the shell and is fixedly connected with one end of the first connecting rod; the driven shaft is perpendicular to the axis of the first connecting rod; one end of the second connecting rod is rotatably connected with one end of the first connecting rod, which is far away from the driven shaft, and the other end of the second connecting rod is rotatably connected with the mounting seat; the mounting seat is fixedly connected with the door frame; when the door body is in a closed state, an included angle between the first connecting rod and the second connecting rod is an acute angle; the driving motor is electrically connected with the control module.
6. The intelligent entrance guard based on the internet of things of claim 5, wherein the electric entrance guard further comprises a clutch device fixedly arranged inside the shell and used for locking or unlocking the first bevel gear and/or the second bevel gear; the clutch device is electrically connected with the control module.
7. The intelligent entrance guard based on the internet of things of claim 6, wherein the control panel further comprises a work indicator light and a backlight light; the working indicator lamp is fixedly arranged on the front side of the control panel and used for prompting the working state of the intelligent access control; the backlight lamp is fixedly arranged in the control panel and used for providing a light source for the control panel under a dim condition so as to facilitate the correct operation of a door opening person.
8. The intelligent entrance guard based on the internet of things according to claim 3, wherein a plurality of calling keys are arranged and correspond to video telephones installed in different households respectively.
9. The internet of things-based smart gate inhibition as claimed in claim 6, wherein the identification device is a wireless card reader.
10. The intelligent entrance guard based on thing networking of claim 6, characterized in that, the both sides of the door body all are fixed and are provided with the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021349806.9U CN213069922U (en) | 2020-07-10 | 2020-07-10 | Intelligent entrance guard based on thing networking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021349806.9U CN213069922U (en) | 2020-07-10 | 2020-07-10 | Intelligent entrance guard based on thing networking |
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| CN213069922U true CN213069922U (en) | 2021-04-27 |
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| CN202021349806.9U Active CN213069922U (en) | 2020-07-10 | 2020-07-10 | Intelligent entrance guard based on thing networking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119562037A (en) * | 2025-01-26 | 2025-03-04 | 深圳市中天明消防科技有限公司 | Fire control access control alarm device based on Internet of things and alarm method thereof |
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2020
- 2020-07-10 CN CN202021349806.9U patent/CN213069922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119562037A (en) * | 2025-01-26 | 2025-03-04 | 深圳市中天明消防科技有限公司 | Fire control access control alarm device based on Internet of things and alarm method thereof |
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