CN211201534U - Access control device based on Internet of things - Google Patents
Access control device based on Internet of things Download PDFInfo
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- CN211201534U CN211201534U CN201920370440.4U CN201920370440U CN211201534U CN 211201534 U CN211201534 U CN 211201534U CN 201920370440 U CN201920370440 U CN 201920370440U CN 211201534 U CN211201534 U CN 211201534U
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- mounting seat
- entrance guard
- control device
- internet
- things
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Abstract
The utility model relates to an entrance guard control technical field specifically is an entrance guard control device based on thing networking, include mount pad, the unlocking device that punches the card, rotating electrical machines and plug-in strip switch down, the rotating electrical machines is connected with the pivot, the pivot is connected with a body, install left electro-magnet in the mount pad down, left side electro-magnet has right electro-magnet through spring coupling, the magnetism that left side electro-magnet and right electro-magnet opposite face produced is different, be connected with on the electro-magnet of the right side and follow gliding slider in the mount pad down, be connected with the connecting rod on the slider, the plug-in strip switch still is connected with the battery of installation in the mount pad down through the wire. The utility model discloses when the power has a power failure, right electro-magnet slides to knife switch's direction along with the slider under the effect of spring to make knife switch be in the open mode, even consequently under the condition of having a power failure, this entrance guard's device also can use, from not influencing personnel from the door body business turn over.
Description
Technical Field
The utility model relates to an access control technical field, more specifically relate to an access control device based on thing networking.
Background
The internet of things is an important component of a new generation of information technology and an important development stage of the information era, and as the name suggests, the internet of things is the internet connected with objects. This has two layers: firstly, the core and the foundation of the internet of things are still the internet, and the internet is an extended and expanded network on the basis of the internet; and secondly, the user side extends and expands to any article to perform information exchange and communication, namely, the article information. Therefore, the Internet of things brings great convenience for our life, and the access control using the Internet of things can control the opening and closing of the access control without special personnel, so that corresponding labor force is reduced, and the Internet of things system has important practical significance.
The entrance guard device of the internet of things in the prior art comprises an entrance guard device body, wherein the top of the entrance guard device body is provided with a mounting groove, the top of the entrance guard device body is fixedly provided with a card swiping unlocking device through the mounting groove, the bottom of the inner cavity of the entrance guard device body is fixedly provided with a servo motor, one end of a rotating shaft of the servo motor is connected with a transmission main shaft through a shaft coupler in a transmission way, one end of the transmission main shaft penetrates through the entrance guard device body and extends to the bottom of the entrance guard device body, the bottom of the entrance guard device body is welded with a support column, the bottom end of the support column is welded with a support table, one side of the top of the support table is welded with a fixed pipe, one end of the transmission main shaft extends to the inside of the fixed pipe and is hinged with the fixed pipe through a bearing, the inboard of frame is provided with the baffle, and the equal fixed mounting in both sides at baffle top has first dead lever, and the top of first dead lever articulates through the pivot has the connecting rod, and logical groove has been seted up to the inside of first cover pipe, and the one end of connecting rod runs through first cover pipe and extends to the inside that leads to the groove. The personnel of business turn over just can pass through this entrance guard through brushing the entrance guard card on the unlocking device that punches the card, and is comparatively convenient and reliable.
However, the door access device can be used only under the normal condition of power supply, and if power failure occurs for some reasons, the door access device cannot be used, so that troubles are inevitably caused to the personnel who enter and exit. Therefore, there is an urgent need for a door access device that can be used even in the event of a power failure.
Disclosure of Invention
Based on above problem, the utility model provides an entrance guard control device based on thing networking for solve current entrance guard device just can not use under the power failure condition, thereby bring trouble problem for the personnel of advancing. The utility model discloses when the power has a power failure, the power of inter attraction disappears between left side electro-magnet and right electro-magnet, right electro-magnet slides along with the slider to knife switch's direction under the effect of spring, it also removes to knife switch's direction to drive the connecting rod to make knife switch be in the open mode, so just can be by the battery for the rotating electrical machines and the power supply of unlocking device of punching the card, even consequently under the condition of having a power failure, this entrance guard's device also can use, from not influencing personnel from door body business turn over.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
an entrance guard control device based on the Internet of things comprises an upper mounting seat and a lower mounting seat which are connected through a supporting rod, the upper mounting seat is provided with a card swiping unlocking device, the upper mounting seat is internally provided with a rotating motor, the rotating motor is connected with a rotating shaft, the rotating shaft is connected with a door body, the card swiping unlocking device is connected with a power supply and the rotating motor through a lead, a left electromagnet is arranged in the lower mounting seat, the left electromagnet is connected with a right electromagnet through a spring, the left electromagnet and the right electromagnet have different magnetism generated by opposite surfaces, the right electromagnet is connected with a sliding block which can slide along the lower mounting seat, the slide block is connected with a connecting rod, the connecting rod is connected with a knife switch in a closed state, the knife switch is connected with the card swiping unlocking device through a wire, and the knife switch is further connected with a storage battery installed in the lower installation seat through a wire.
The utility model discloses in, the simple circuit connection condition is: the power supply is sequentially connected with the card swiping unlocking device and the rotating motor through leads, and the storage battery is sequentially connected with the card swiping unlocking device and the rotating motor through leads; preferably, the access control device is powered by a power supply and powered by a storage battery, and information can be converted to a mobile phone of a manager, the manager can know the power supply condition of the access control device by looking over the mobile phone even in other places, and if the electric quantity of the storage battery is not enough, related personnel can be timely notified to replace the storage battery, so that the access control device is in an internet of things, the manager can conveniently and timely master related information, how to connect the power supply information and the storage battery power supply information with the mobile phone of the manager, the access control device can be realized by the prior art means, and other specific connection relations are the existing connection, so that the details are not repeated here. Under the condition that does not have the power failure, be the power supply of punching the card unlocking device and rotating electrical machines by the power, when someone is through putting the door card on the unlocking device of punching the card, the rotating electrical machines is rotatory, and the rotating electrical machines rotation drives the pivot rotation, and the pivot rotation drives the door body rotation again, personnel alright pass through in the department of following the door body, and foretell unlocking device of punching the card is current, so no longer give unnecessary details to its specific structure, model and circuit connection etc..
At this time, the left electromagnet and the right electromagnet are both powered on and have magnetism, and because the magnetism generated by the opposite surfaces of the left electromagnet and the right electromagnet is different, mutual attraction force is generated between the left electromagnet and the right electromagnet, so that the right electromagnet moves towards the left electromagnet and compresses the spring, and meanwhile, the slide block and the connecting rod are also driven to move towards the left electromagnet; the connecting rod drives the handle of the knife switch to move towards the left electromagnet, so that the knife switch is finally in a closed state, and the storage battery does not supply power to the card-swiping unlocking device and the rotating motor.
The knife switch is also a conventional switch which can be easily purchased in the market, and plays a role in switching on and off the storage battery to supply power for the card swiping unlocking device and the rotating motor, so that the specific model, structure and the like of the knife switch are not limited; the storage battery is also conventional and can be easily purchased in the market, so the specific model, structure and the like of the storage battery are not limited; when the knife switch is in an open state, the storage battery supplies power to the card swiping unlocking device and the rotating motor; when the knife switch is in a closed state, the storage battery does not supply power to the card-swiping unlocking device and the rotating motor.
Under the condition of power failure, the left electromagnet and the right electromagnet are simultaneously powered off, when the left electromagnet and the right electromagnet are powered off, the mutual attraction force between the left electromagnet and the right electromagnet disappears simultaneously, a spring arranged between the left electromagnet and the right electromagnet starts to restore to the original state, the right electromagnet, a sliding block and a connecting rod move together in the direction far away from the left electromagnet under the action of the spring, and meanwhile, a knife switch is driven to move in the direction far away from the left electromagnet, so that the knife switch is finally in an open state; at the moment, the storage battery supplies power for the card swiping unlocking device and the rotating motor.
In summary, when the power supply is normal, the power supply supplies power to the card-swiping unlocking device, the rotating motor and the like; when the power has a power failure, the storage battery can be switched to supply power for the card swiping unlocking device, the rotating motor and the like, so that the access control device can be used under the condition of power failure, and further, the personnel can not be influenced to enter and exit from the door body.
As a preferable mode, a horizontal shaft penetrating through the spring, the right electromagnet and the sliding block is installed on the left electromagnet, the right electromagnet and the sliding block can slide in the horizontal direction along the horizontal shaft, and the tail end of the horizontal shaft is connected with a fixing plate fixed in the lower mounting seat.
Preferably, the spring is made of a non-magnetic material.
Preferably, the horizontal shaft and the sliding block are in clearance fit.
As a preferable mode, a connecting sleeve is sleeved on the rotating shaft and is connected with the door body through a connecting mechanism.
As a preferable mode, the connecting mechanism includes a connecting piece fixed on the door body, and the connecting piece is connected with the connecting sleeve through a screw.
Preferably, the door body is provided with a plurality of vertical bar holes.
In a preferred embodiment, the rotating electric machine is model 6812ZY 150W.
The utility model has the advantages as follows:
(1) the utility model discloses when the power has a power failure, the power of inter attraction disappears between left side electro-magnet and right electro-magnet, right electro-magnet slides along with the slider to knife switch's direction under the effect of spring, it also removes to knife switch's direction to drive the connecting rod to make knife switch be in the open mode, so just can be by the battery for the rotating electrical machines and the power supply of unlocking device of punching the card, even consequently under the condition of having a power failure, this entrance guard's device also can use, from not influencing personnel from door body business turn over.
(2) The utility model discloses install the horizontal axis that passes spring, right electro-magnet and slider on well left electro-magnet, right electro-magnet and slider can be followed the horizontal axis and slided in the horizontal direction, and the end-to-end connection of horizontal axis has the fixed plate of fixing in the mount pad under. The horizontal shaft penetrating through the spring, the right electromagnet and the sliding block is installed, so that the right electromagnet and the sliding block can slide more stably in the lower installation seat, and the compression and the extension of the spring are more stable, so that whether the knife switch is in an open or closed state or not can be further and more accurately controlled.
(3) The utility model discloses the material of well spring is non-magnetic material, can avoid the spring to be magnetized by left electro-magnet and right electro-magnet like this to influence the elasticity of spring.
(4) The utility model discloses be clearance fit between horizontal axis and slider, make the slider like this can be on the horizon bar the slip of non-resistance.
(5) The utility model discloses the cover has the adapter sleeve in the well pivot, and the adapter sleeve passes through coupling mechanism and connects the door body, and when the door body damaged, can open the connecting piece and take off the door body from the adapter sleeve and maintain, so make things convenient for the installation and the maintenance of door body very much.
(6) The utility model discloses well coupling mechanism is connected with the adapter sleeve including fixing the connection piece on the door body, connection piece through the screw, and rotatory screw can be twisted off the screw from the connection piece to make things convenient for the door body to take off from the adapter sleeve and maintain and change.
(7) The utility model discloses it has a plurality of vertical bar holes to open on the well door body, can subtract the weight of lower door body to can reduce the consumption to the energy, also save the material simultaneously.
(8) The utility model discloses well rotating electrical machines's model is 6812ZY150W, and the rotating electrical machines is conventional can purchase the motor easily in the market, and its model is not limited to above-mentioned model, and the user also can select other models through actual conditions.
Drawings
Fig. 1 is a schematic front sectional view of the knife switch of the present invention in the closed state;
fig. 2 is a schematic front sectional view of the knife switch of the present invention in an open state;
FIG. 3 is a schematic view of the front sectional structure of the door body of the present invention when it is connected to the connecting sheet;
FIG. 4 is a schematic view of the right side view of the door body of the present invention when connected to the connecting sheet;
FIG. 5 is a schematic diagram of the circuit connection of the present invention;
reference numerals: the device comprises a lower mounting base, a left electromagnet, a horizontal shaft, a spring, a right electromagnet, a sliding block, a connecting rod, a supporting rod, a connecting sheet, a connecting sleeve, an upper mounting base, a card swiping unlocking device, a rotating motor, a rotating shaft, a door body, a storage battery, a knife switch, a fixing plate and a vertical bar hole, wherein the lower mounting base is 1, the left electromagnet is 2, the horizontal shaft is 3, the spring is 4, the right electromagnet is 5, the.
Detailed Description
For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.
Example 1:
as shown in fig. 1-5, an entrance guard control device based on internet of things comprises an upper mounting seat 11 and a lower mounting seat 1, the upper mounting seat 11 is connected with the lower mounting seat 1 through a support rod 8, a card swiping unlocking device 12 is installed on the upper mounting seat 11, a rotating motor 13 is installed in the upper mounting seat 11, the rotating motor 13 is connected with a rotating shaft 14, the rotating shaft 14 is connected with a door body 15, the card swiping unlocking device 12 is connected with the rotating motor 13 through a lead, a left electromagnet 2 is installed in the lower mounting seat 1, the left electromagnet 2 is connected with a right electromagnet 5 through a spring 4, the magnetism generated by the opposite surfaces of the left electromagnet 2 and the right electromagnet 5 is different, a sliding block 6 capable of sliding along the lower mounting seat 1 is connected on the right electromagnet 5, a connecting rod 7 is connected on the sliding block 6, the connecting rod 7 is connected with a knife switch 17 in a closed state, the knife switch 17 is connected with the, the knife switch 17 is also connected with a storage battery 16 installed in the lower mounting base 1 through a lead.
The utility model discloses in, the simple circuit connection condition is: the power supply is sequentially connected with the card swiping unlocking device 12 and the rotating motor 13 through leads, and the storage battery 16 is sequentially connected with the card swiping unlocking device 12 and the rotating motor 13 through leads. Preferably, the information of the access control device powered by the power supply and the information powered by the storage battery 16 can be converted to the mobile phone of a manager, the manager can know the power supply condition of the access control device by looking over the mobile phone even in other places, and if the electric quantity of the storage battery 16 is insufficient, the manager can timely inform relevant personnel to replace the storage battery 16, so that the access control device is in an internet of things, the manager can conveniently and timely master the relevant information, how to connect the information powered by the power supply and the information powered by the storage battery 16 with the mobile phone of the manager can be realized by means of the prior art, other specific connection relations are the existing connection, and therefore details are not given here. Under the condition that power failure does not exist, the power supply supplies power to the card swiping unlocking device 12 and the rotating motor 13, when a person puts a door card on the card swiping unlocking device 12, the rotating motor 13 rotates to drive the rotating shaft 14 to rotate, the rotating shaft 14 rotates to drive the door body 15 to rotate, the person can pass through the door body 15, the card swiping unlocking device 12 is conventional, and specific structures, models, circuit connection and the like of the card swiping unlocking device are not described again.
At this time, the left electromagnet 2 and the right electromagnet 5 are both powered on and have magnetism, and because the magnetism generated by the opposite surfaces of the left electromagnet 2 and the right electromagnet 5 is different, a mutual attraction force is generated between the left electromagnet 2 and the right electromagnet 5, so that the right electromagnet 5 moves towards the left electromagnet 2 and compresses the spring 4, and meanwhile, the slide block 6 and the connecting rod 7 are also driven to move towards the left electromagnet 2, and because the connecting rod 7 is connected to the handle of the knife switch 17, the specific connection relationship between the connecting rod 7 and the handle is various, which is not described herein again; the connecting rod 7 drives the handle of the knife switch 17 to move towards the left electromagnet 2, and finally the knife switch 17 is in a closed state, and the storage battery 16 does not supply power to the card-swiping unlocking device 12 and the rotating motor 13.
The knife switch 17 is also a conventional switch which can be easily purchased in the market, and plays a role in switching on and off the storage battery 16 to supply power to the card-swiping unlocking device 12 and the rotating motor 13, so that the specific model, structure and the like of the knife switch 17 are not limited, the storage battery 16 is also a conventional switch which can be easily purchased in the market, and the specific model, structure and the like of the storage battery 16 are not limited; when the knife switch is in an open state, the storage battery 16 supplies power to the card swiping unlocking device 12 and the rotating motor 13; when the knife switch is in the closed state, the storage battery 16 does not supply power to the card swiping unlocking device 12 and the rotating motor 13.
Under the condition of power failure, the left electromagnet 2 and the right electromagnet 5 are simultaneously powered off, when the left electromagnet 2 and the right electromagnet 5 are powered off, the mutual attraction force between the left electromagnet 2 and the right electromagnet 5 disappears simultaneously, the spring 4 arranged between the left electromagnet 2 and the right electromagnet 5 starts to restore to the original state, the right electromagnet 5, the sliding block 6 and the connecting rod 7 move together in the direction away from the left electromagnet 2 under the action of the spring 4, and simultaneously the knife switch 17 is driven to move in the direction away from the left electromagnet 2, so that the knife switch 17 is finally in an open state; at this time, the storage battery 16 supplies power to the card swiping unlocking device 12 and the rotating motor 13.
In summary, when the power supply is normal, the power supply supplies power to the card-swiping unlocking device 12, the rotating motor 13 and the like; when the power supply is in a power failure, the storage battery 16 can be switched to supply power for the card swiping unlocking device 12, the rotating motor 13 and the like, so that the access control device can be used under the condition of power supply failure, and further, the access of personnel from the door body 15 is not influenced.
Example 2:
as shown in fig. 1-5, an entrance guard control device based on internet of things comprises an upper mounting seat 11 and a lower mounting seat 1, the upper mounting seat 11 is connected with the lower mounting seat 1 through a support rod 8, a card swiping unlocking device 12 is installed on the upper mounting seat 11, a rotating motor 13 is installed in the upper mounting seat 11, the rotating motor 13 is connected with a rotating shaft 14, the rotating shaft 14 is connected with a door body 15, the card swiping unlocking device 12 is connected with the rotating motor 13 through a lead, a left electromagnet 2 is installed in the lower mounting seat 1, the left electromagnet 2 is connected with a right electromagnet 5 through a spring 4, the magnetism generated by the opposite surfaces of the left electromagnet 2 and the right electromagnet 5 is different, a sliding block 6 capable of sliding along the lower mounting seat 1 is connected on the right electromagnet 5, a connecting rod 7 is connected on the sliding block 6, the connecting rod 7 is connected with a knife switch 17 in a closed state, the knife switch 17 is connected with the, the knife switch 17 is also connected with a storage battery 16 installed in the lower mounting base 1 through a lead.
In this embodiment, the left electromagnet 2 is provided with a horizontal shaft 3 passing through the spring 4, the right electromagnet 5 and the sliding block 6 can slide along the horizontal shaft 3 in the horizontal direction, and the tail end of the horizontal shaft 3 is connected with a fixing plate 18 fixed in the lower mounting seat 1. Through the installation pass spring 4, right electro-magnet 5 and slider 6 horizontal axis 3, can make right electro-magnet 5 and slider 6 more stable slip in mount pad 1 down, spring 4's compression and extension are also more steady to whether control knife switch 17 that can be further more accurate is in and opens or closed condition.
Preferably, the spring 4 is made of a non-magnetic material, so that the spring 4 is prevented from being magnetized by the left electromagnet 2 and the right electromagnet 5, and the elasticity of the spring 4 is prevented from being affected.
Preferably, the horizontal shaft 3 is in clearance fit with the sliding block 6, so that the sliding block 6 can slide on the horizontal shaft without resistance.
Other parts of this embodiment are the same as those of the above embodiment, and are not described herein again.
Example 3:
as shown in fig. 1-5, an entrance guard control device based on internet of things comprises an upper mounting seat 11 and a lower mounting seat 1, the upper mounting seat 11 is connected with the lower mounting seat 1 through a support rod 8, a card swiping unlocking device 12 is installed on the upper mounting seat 11, a rotating motor 13 is installed in the upper mounting seat 11, the rotating motor 13 is connected with a rotating shaft 14, the rotating shaft 14 is connected with a door body 15, the card swiping unlocking device 12 is connected with the rotating motor 13 through a lead, a left electromagnet 2 is installed in the lower mounting seat 1, the left electromagnet 2 is connected with a right electromagnet 5 through a spring 4, the magnetism generated by the opposite surfaces of the left electromagnet 2 and the right electromagnet 5 is different, a sliding block 6 capable of sliding along the lower mounting seat 1 is connected on the right electromagnet 5, a connecting rod 7 is connected on the sliding block 6, the connecting rod 7 is connected with a knife switch 17 in a closed state, the knife switch 17 is connected with the, the knife switch 17 is also connected with a storage battery 16 installed in the lower mounting base 1 through a lead.
In this embodiment, the connecting sleeve 10 is sleeved on the rotating shaft 14, the connecting sleeve 10 is connected with the door body 15 through the connecting mechanism, and when the door body 15 is damaged, the connecting member can be opened to take the door body 15 off the connecting sleeve 10 for maintenance, so that the installation and maintenance of the door body 15 are very convenient.
Preferably, the connecting mechanism comprises a connecting sheet 9 fixed on the door body 15, the connecting sheet 9 is connected with the connecting sleeve 10 through a screw, and the screw can be unscrewed from the connecting sheet 9 by rotating the screw, so that the door body 15 can be conveniently taken off from the connecting sleeve 10 for maintenance and replacement.
Preferably, the door body 15 is provided with a plurality of vertical bar holes 19, so that the weight of the door body 15 can be reduced, the energy consumption can be reduced, and the material can be saved.
Preferably, the model of the rotating electric machine 13 is 6812ZY150W, and the rotating electric machine 13 is a conventional one that is easily available on the market, and its model is not limited to the above model, and the user can select other models by the actual situation.
Other parts of this embodiment are the same as those of the above embodiment, and are not described herein again.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, and the protection scope of the present invention is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An entrance guard control device based on the Internet of things comprises an upper mounting seat (11) and a lower mounting seat (1), wherein the upper mounting seat (11) is connected with the lower mounting seat (1) through a supporting rod (8), a card swiping unlocking device (12) is installed on the upper mounting seat (11), a rotating motor (13) is installed in the upper mounting seat (11), the rotating motor (13) is connected with a rotating shaft (14), the rotating shaft (14) is connected with a door body (15), the card swiping unlocking device (12) is connected with a power supply and the rotating motor (13) through a wire, the entrance guard control device is characterized in that a left electromagnet (2) is installed in the lower mounting seat (1), the left electromagnet (2) is connected with a right electromagnet (5) through a spring (4), the magnetic properties generated by the opposite surfaces of the left electromagnet (2) and the right electromagnet (5) are different, and a sliding block (6) capable of sliding in the lower mounting seat (1) is connected to the right electromagnet (5), the automatic card swiping device is characterized in that a connecting rod (7) is connected to the sliding block (6), a knife switch (17) in a closed state is connected to the connecting rod (7), the knife switch (17) is connected with the card swiping unlocking device (12) through a wire, and the knife switch (17) is further connected with a storage battery (16) installed in the lower installation seat (1) through a wire.
2. The entrance guard control device based on the Internet of things is characterized in that a horizontal shaft (3) penetrating through a spring (4), a right electromagnet (5) and a sliding block (6) is installed on the left electromagnet (2), the right electromagnet (5) and the sliding block (6) can slide in the horizontal direction along the horizontal shaft (3), and the tail end of the horizontal shaft (3) is connected with a fixing plate (18) fixed in the lower mounting seat (1).
3. The entrance guard control device based on the internet of things as claimed in claim 2, wherein the spring (4) is made of a non-magnetic material.
4. The entrance guard control device based on the internet of things as claimed in claim 2, wherein the horizontal shaft (3) and the sliding block (6) are in clearance fit.
5. The entrance guard control device based on the internet of things as claimed in claim 1, wherein a connecting sleeve (10) is sleeved on the rotating shaft (14), and the connecting sleeve (10) is connected with the door body (15) through a connecting mechanism.
6. The entrance guard control device based on the Internet of things as claimed in claim 5, wherein the connecting mechanism comprises a connecting sheet (9) fixed on the door body (15), and the connecting sheet (9) is connected with the connecting sleeve (10) through a screw.
7. The Internet of things-based access control device according to claim 5 or 6, wherein the door body (15) is provided with a plurality of vertical bar holes (19).
8. The entrance guard control device based on the internet of things as claimed in claim 1, wherein the model number of the rotating motor (13) is 6812ZY 150W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370440.4U CN211201534U (en) | 2019-03-21 | 2019-03-21 | Access control device based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370440.4U CN211201534U (en) | 2019-03-21 | 2019-03-21 | Access control device based on Internet of things |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211201534U true CN211201534U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920370440.4U Expired - Fee Related CN211201534U (en) | 2019-03-21 | 2019-03-21 | Access control device based on Internet of things |
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| Country | Link |
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| CN (1) | CN211201534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699915A (en) * | 2021-07-15 | 2021-11-26 | 华东交通大学 | Normally open large-traffic multichannel intelligence floodgate machine identity verification device |
-
2019
- 2019-03-21 CN CN201920370440.4U patent/CN211201534U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699915A (en) * | 2021-07-15 | 2021-11-26 | 华东交通大学 | Normally open large-traffic multichannel intelligence floodgate machine identity verification device |
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Granted publication date: 20200807 |