CN211057676U - College university college student safety precaution entrance guard's device - Google Patents
College university college student safety precaution entrance guard's device Download PDFInfo
- Publication number
- CN211057676U CN211057676U CN201921814219.XU CN201921814219U CN211057676U CN 211057676 U CN211057676 U CN 211057676U CN 201921814219 U CN201921814219 U CN 201921814219U CN 211057676 U CN211057676 U CN 211057676U
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- Prior art keywords
- gate
- wing
- cavity
- cleaning
- door
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- 238000004140 cleaning Methods 0.000 claims abstract description 46
- 239000010865 sewage Substances 0.000 claims abstract description 43
- 230000008676 import Effects 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 16
- 230000001915 proofreading effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000007790 scraping Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Time Recorders, Dirve Recorders, Access Control (AREA)
Abstract
The utility model provides a college university student safety precaution entrance guard's device, including a plurality of wing floodgates, a plurality of import gate and the discernment proof reading device that is used for the people to pass through, its characterized in that: the plurality of wing gates are matched with each other to form a plurality of wing gate channels, and the plurality of inlet gates are correspondingly arranged at the tail ends of the wing gate channels; an inclined road surface is arranged right in front of each wing gate channel, and retaining walls are arranged at the left end and the right end of the inclined road surface; the inclined pavement is provided with a first cleaning area for cleaning soles and a card swiping area matched with the wing gates; a plurality of first spray heads for cleaning the first cleaning area are arranged on the inner sides of the retaining walls; the front end of the inclined pavement is provided with a cavity for storing sewage discharged by the first cleaning area, and the upper surface of the cavity is provided with a plurality of holes for enabling the sewage to enter the cavity; the utility model discloses simple structure, convenient operation, great assurance student's business turn over security.
Description
Technical Field
The utility model relates to an access control system safety technical field, especially a college student safety precaution entrance guard's device.
Background
With the progress of technology, an information-based campus management system based on the internet of things technology is gradually popularized in all colleges and universities. It is called a smart campus system. Campus safety management is always an important aspect of campus management, and how to judge identity information of people who enter and exit is to enable students at school to enter and exit a building normally, and meanwhile, other social people are prevented from entering and exiting the building randomly. Although the existing smart campus system has developed an identity access card based on the RFID technology, if the identity access card is lost or stolen, other people can easily get in and out of students by using the lost access card, thereby causing management loopholes and potential safety hazards; and after students go out, the soles are often stained with sludge and dirt, and when the students go into the building, the sludge and the dirt on the soles are brought into the building, so that the workload of cleaning personnel is increased.
Disclosure of Invention
In order to overcome the problems, the utility model provides a college university student safety precaution entrance guard's device has not only guaranteed safety control's validity, has carried out effective cleaning action to the sole moreover, overcomes prior art's is not enough.
The utility model discloses a following method realizes: the utility model provides a college student safety precaution entrance guard's device, includes a plurality of wing floodgates, a plurality of import floodgate that are used for the people to pass through and discernment proofreading device, its characterized in that: the plurality of wing gates are matched with each other to form a plurality of wing gate channels, and the plurality of inlet gates are correspondingly arranged at the tail ends of the wing gate channels; an inclined road surface is arranged right in front of each wing gate channel, and retaining walls are arranged at the left end and the right end of the inclined road surface; the inclined pavement is provided with a first cleaning area for cleaning soles and a card swiping area matched with the wing gates; a plurality of first spray heads for cleaning the first cleaning area are arranged on the inner sides of the retaining walls; the front end of the inclined pavement is provided with a cavity for storing sewage discharged from the first cleaning area, the upper surface of the cavity is provided with a plurality of holes for enabling the sewage to enter the cavity, and the side surface of the cavity is provided with a sewage discharge pipe for discharging the sewage in the cavity; a sewage tank used for receiving sewage after being cleaned in the first cleaning area is arranged below the inclined pavement, and the front end face of the sewage tank is connected with the cavity, so that water in the sewage tank can be discharged into the cavity and then discharged; a water pipe penetrates through the sewage tank, a plurality of second spray headers for cleaning the sewage tank are arranged on the water pipe, and the first spray headers and the second spray headers are connected with the water pipe; the first cleaning area comprises a plurality of hollowed inclined plates arranged above the sewage tank, a plurality of cleaning heads which are used for cleaning soles and incline upwards are arranged on the hollowed inclined plates, and an angle A is formed between each cleaning head and each hollowed inclined plate; the upper surface end of a plurality of wing floodgates all is provided with discernment checking device, discernment checking device with import gate electric connection.
Further, angle A ranges from 45 to 60.
Furthermore, the wing gate comprises a gate main body, a blocking assembly for opening and closing a wing gate channel, a card swiping device and a control box, wherein a cavity is formed in the gate main body, the control box and the card swiping device are both positioned in the cavity, an opening communicated with the cavity is formed in the front end surface of the gate main body, a card swiping area of the card swiping device is arranged in the opening, a first display screen is arranged on the front end surface of the gate main body, and the first display screen and the card swiping device are both connected with the control box; the stop subassembly with the control box is connected, be provided with the circuit board in the control box, be provided with MCU on the circuit board, device drive circuit is compared in device drive circuit, import gate drive circuit, first display screen drive circuit, discernment all with MCU connects, MCU sets up has wireless communication module, the device of punching the card passes through wireless communication module and is connected with the database to do benefit to the device of punching the card and carry out personnel in with student's information transmission to the database and compare.
Furthermore, the arresting component comprises a first gate wing and a second gate wing, the first gate wing is arranged in front of the second gate wing, and a waiting area for a next person to wait to enter is formed between the first gate wing and the second gate wing; be provided with in the floodgate owner body and be used for detecting whether someone infrared sensor in waiting for the district, infrared sensor drive circuit, first wing floodgate drive circuit and second wing floodgate drive circuit all with MCU connects.
Furthermore, an identification area for identifying the identity by using an identification and proofreading device is arranged between the second gate wing and the inlet gate; the identification and correction device comprises a box body, wherein a camera used for shooting images and a second display screen used for displaying the identity of a person are arranged on the front face of the box body, the camera is located above the second display screen, and the camera is connected with the database through the wireless communication module so as to be beneficial to personnel comparison between the images shot by the camera and the database.
Further, the import gate includes first door frame and second door frame, all be provided with first door plant and second door plant in first door frame and the second door frame, all be provided with first motor in the last horizontal pole of first door frame and second door frame, first door plant and second door plant set up in the both sides of first motor output shaft, and first door plant and second door plant side all with first motor output shaft is connected, the first door plant of first door frame with the second door plant of second door frame forms the import gate to do benefit to first motor output shaft drive the import gate is opened and is closed.
Furthermore, third door frames are arranged on two sides of the inlet gate, a second motor is arranged in a cross rod on each third door frame, a third door plate is arranged in each third door frame and connected with an output shaft of the second motor, and the third door plate corresponds to the first door plate and the second door plate of the inlet gate to form the outlet gate.
Furthermore, a third display screen is fixedly arranged between the upper cross rods of the first door frame and the second door frame.
Further, still include the clean district of second, the clean district of second is including scraping district and the district that absorbs water, incline road surface is followed supreme scraping district that has set gradually first clean district, is used for scraping the surplus mud of sole and the district that absorbs water that is used for absorbing sole moisture down.
Furthermore, an inclined panel which forms an angle B with the lower surface is arranged on the lower surface of the sewage tank, so that water in the sewage tank can better flow into the cavity; the angle B ranges from 30 ° to 45 °.
The beneficial effects of the utility model reside in that: the wing gate and the inlet gate are added in the device, so that the in-and-out safety of students is ensured, and the condition that the lost access card is not held by a school worker to enter and exit a building is avoided; the device is also provided with an inclined pavement and a first cleaning area, so that the students can clean dirt and sludge on the soles when entering the wing gate through the inclined pavement; the identification comparison device is added in the device, so that the personnel in the school and the personnel not in the school can be identified and compared with the database, and the safety is improved; the waiting area is added, so that the students can not be crowded when entering; the working time of cleaning personnel is saved, manpower and material resources are saved, and the safety performance is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural view of an inclined road surface.
Fig. 3 is a schematic view of the structure of the wing gate and the inlet gate.
Fig. 4 is a schematic diagram of the circuit principle of the present invention.
Fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present invention provides a first embodiment: a college university student safety early warning entrance guard device comprises a plurality of wing gates 1, a plurality of inlet gates 2 for people to pass through and a recognition and correction device 3, wherein the plurality of wing gates 1 are matched with each other to form a plurality of wing gate channels 4, and the plurality of inlet gates 2 are correspondingly arranged at the tail ends of the wing gate channels 4; an inclined pavement 5 is arranged right in front of each wing gate channel 4, and retaining walls 51 are arranged at the left end and the right end of each inclined pavement 5; the inclined pavement 5 is provided with a first cleaning area 52 for cleaning soles and a card swiping area 53 matched with the wing gate 1 and used for students to swipe door control cards for identification; the inner sides of the retaining walls 51 are respectively provided with a plurality of first spray heads 54 for cleaning the first cleaning areas 52, the first spray heads 54 can clean the first cleaning areas 52 after students have entered the building or in the middle of the night, and daily entering of the students cannot be influenced; the front end of the inclined pavement 5 is provided with a cavity 55 for storing sewage discharged from the first cleaning area 52, the upper surface of the cavity 55 is provided with a plurality of holes 56 for enabling the sewage to enter the cavity 55, and the side surface of the cavity 55 is provided with a sewage discharge pipe 57 for discharging the sewage in the cavity; a sewage tank 58 for receiving sewage after being cleaned in the first cleaning area 52 is arranged below the inclined road surface 5, and the front end surface of the sewage tank 58 is connected with the cavity 55, so that water in the sewage tank 58 can be discharged into the cavity 55 and then discharged; a water pipe 59 is arranged in the sewage tank 58 in a penetrating manner, a plurality of second spray headers 6 for cleaning the sewage tank 58 are arranged on the water pipe 59, the first spray header 54 and the second spray headers 6 are both connected with the water pipe 59, so that external water enters the water pipe 59, and the water pipe 59 supplies water to the first spray header 54 and the second spray headers 6; the first cleaning area 52 comprises a plurality of hollowed inclined plates 7 arranged above the sewage tank 58, a plurality of cleaning heads 71 which are used for cleaning soles and incline upwards are arranged on each hollowed inclined plate 7, and an angle A is formed between each cleaning head 71 and each hollowed inclined plate 7, so that in the process that a student walks from bottom to top, due to inertia, dirt on the soles can be scraped off by the cleaning heads 71, and the dirt enters the sewage tank 58 from the hollowed parts of the hollowed inclined plates 7; the upper surface end of a plurality of wing floodgates 1 all is provided with discernment correcting unit 3, discernment correcting unit 3 with import gate 2 electric connection.
The cleaning head 71 of the present invention is a convex part inclined upward.
The angle a ranges from 45 to 60. So as to be beneficial to better remove the dirt of the sole.
The wing gate 1 comprises a gate main body 11, a blocking assembly 8 for opening and closing a wing gate channel 4, a card swiping device (not shown) and a control box (not shown), wherein a cavity (not shown) is arranged inside the gate main body 11, the control box and the card swiping device are both positioned in the cavity, an opening communicated with the cavity is arranged on the front end surface of the gate main body 11, a card swiping area 12 of the card swiping device is arranged in the opening, a first display screen 13 is arranged on the front end surface of the gate main body 11, and the first display screen 13 and the card swiping device are both connected with the control box; the utility model discloses a device for checking the card, including the control box, the control box is provided with the circuit board, stop subassembly 8 with the control box is connected, be provided with MCU on the circuit board, the device drive circuit is compared in device drive circuit, import gate drive circuit, first display screen drive circuit, discernment all with MCU connects, MCU sets up has wireless communication module, the device of punching the card passes through wireless communication module and is connected with the database to do benefit to the device of punching the card and carry out personnel in with student's information transmission to the database and compare. After the student swipes the card, the wireless communication module can compare the student card data with the student data in the database to judge whether the student is the school student.
The arresting component 8 comprises a first gate wing 81 and a second gate wing 82, the first gate wing 81 is arranged in front of the second gate wing 82, and a waiting area 83 for a next person to wait for entering is arranged between the first gate wing 81 and the second gate wing 82; be provided with on the floodgate main part 11 and be used for detecting whether someone infrared sensor 84 in waiting for district 83, infrared sensor drive circuit, first wing floodgate drive circuit and second wing floodgate drive circuit all with MCU connects. So that after the first student enters the area of the identification and collation apparatus 3, the next student can enter the waiting area 83 to wait without causing a congestion situation.
An identification area 31 for identifying the identity by using an identification and proofreading device 3 is arranged between the second gate wing 82 and the inlet gate 2; the identification and correction device 3 comprises a box body 32, the box body 32 is provided with a camera 33 for shooting images and a second display screen 34 for displaying the identity of a coming person on the front side, the camera 33 is positioned above the second display screen 34, the camera 33 is connected with a database through a wireless communication module, so that personnel comparison is carried out between the images shot by the camera 33 and the database. So that the student enters the identification area 31 after passing through the waiting area 83, the image of the student is shot by the camera 33, the image of the student entering the building is stored, the image of the student is compared with the student card information input during card swiping in a database, if the student is the same student, the identification and correction device 3 opens the entrance gate 2, and if the student is not consistent with the student card information, an alarm is given.
The inlet gate 2 comprises a first door frame 21 and a second door frame 22, a first door plate 23 and a second door plate 24 are arranged in the first door frame 21 and the second door frame 22, a first motor 25 is arranged in an upper cross rod of the first door frame 21 and the second door frame 22, the first door plate 23 and the second door plate 24 are arranged on two sides of an output shaft 26 of the first motor 25, the side surfaces of the first door plate 23 and the second door plate 24 are connected with the output shaft 26 of the first motor 25, the first door plate of the first door frame 21 and the second door plate of the second door frame 22 form the inlet gate 2, and the inlet gate 2 is driven by the output shaft 26 of the first motor 25 to be opened and closed. So that the first motor 25 rotates the first door 23 and the second door 24 by 90 degrees to open the inlet gate 2.
The two sides of the inlet gate 2 are provided with third door frames 27, a cross bar of the third door frames 27 is provided with a second motor (not shown), a third door plate (not shown) is arranged in the third door frames 27, the third door plate is connected with an output shaft of the second motor, and the third door plate corresponds to the first door plate 23 and the second door plate 24 of the inlet gate 2 to form an outlet gate. The exit of exit gate is provided with control box 271, control box 271 with exit gate electric connection, control box 271 openly is provided with camera and display screen for when the student goes out the exit gate, can take notes and contrast the student's image of import gate 2, judge the student who goes out in the building and the student in the building, guarantee student's safety.
A third display screen 28 is fixedly arranged between the upper cross bars of the first door frame 21 and the second door frame 22. So that maintenance status or display of the utility model is being maintained and advertising effect can be played on the third display screen 28.
Referring to fig. 5, the present invention provides a second embodiment: still include the clean district 9 of second, the clean district 9 of second is including scraping district 91 and the district 92 that absorbs water, incline road surface 5 from supreme scraping district 91 that has set gradually first clean district 52, is used for scraping the surplus mud of sole and the district 92 that absorbs water that is used for absorbing sole moisture down. First shower head 54 extends to scrape the 2/3 department of district 91, and the student passes through first clean district 52 back, and first shower head 54 is opened, carries out moist effect to scraping district 91, and the student of being convenient for can get rid of through scraping district 91 at the remaining silt of sole behind fretwork slope plate 7, scrape district 91 below and be provided with a plurality of through-holes (not shown) for when wasing scraping district 91, sewage can be arranged into bilge water tank 58, and water absorption district 92 can be with the moisture absorption of student's sole, avoids slipping.
The lower surface of the sewage tank 58 is provided with an inclined panel 10 which forms an angle B with the lower surface, so that water in the sewage tank 58 can better flow into the cavity 55; the angle B ranges from 30 ° to 45 °.
The utility model discloses a theory of operation: when a student walks across an inclined road surface and enters a card swiping area, the cleaning head is arranged on the inclined road surface, the student can scrape dirt on soles of the student due to inertia when walking from bottom to top, the cleanness and the sanitation of the soles are ensured, electronic data of the student are stored in a database, after a first student enters the card swiping area for swiping, a wireless data module in a control box compares the data of the student card with student data in the database, and checks whether the student exists, if so, a first wing gate and a second wing gate are opened, the first student enters an identification area, a camera carries out face identification to judge whether card holders are consistent with the student data in the database (the faces are recorded), an inlet gate is opened after the consistency is judged, and if not, an alarm signal is sent; after a first student enters the identification area, a second student can swipe a card to enter the waiting area, when the first student verifies the correctness, the entrance gate is opened, after the first student enters, the entrance gate is closed, the second wing gate is opened, the second student enters the identification area from the waiting area, a third student swipes the card, opens the first wing gate to enter the waiting area, and the like.
It should be noted here that the control principles and circuit structures of the wing gate, the inlet gate, the identification and correction device, the card swiping device and the control box are all the prior art and are not described in detail herein, and those skilled in the art can clearly understand that what is mainly protected in this patent is the structure of the safety early warning access control device for college students.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a college student safety precaution entrance guard's device, includes a plurality of wing floodgates, a plurality of import floodgate that are used for the people to pass through and discernment proofreading device, its characterized in that: the plurality of wing gates are matched with each other to form a plurality of wing gate channels, and the plurality of inlet gates are correspondingly arranged at the tail ends of the wing gate channels; an inclined road surface is arranged right in front of each wing gate channel, and retaining walls are arranged at the left end and the right end of the inclined road surface; the inclined pavement is provided with a first cleaning area for cleaning soles and a card swiping area matched with the wing gates; a plurality of first spray heads for cleaning the first cleaning area are arranged on the inner sides of the retaining walls; the front end of the inclined pavement is provided with a cavity for storing sewage discharged from the first cleaning area, the upper surface of the cavity is provided with a plurality of holes for enabling the sewage to enter the cavity, and the side surface of the cavity is provided with a sewage discharge pipe for discharging the sewage in the cavity; a sewage tank used for receiving sewage after being cleaned in the first cleaning area is arranged below the inclined pavement, and the front end face of the sewage tank is connected with the cavity, so that water in the sewage tank can be discharged into the cavity and then discharged; a water pipe penetrates through the sewage tank, a plurality of second spray headers for cleaning the sewage tank are arranged on the water pipe, and the first spray headers and the second spray headers are connected with the water pipe; the first cleaning area comprises a plurality of hollowed inclined plates arranged above the sewage tank, a plurality of cleaning heads which are used for cleaning soles and incline upwards are arranged on the hollowed inclined plates, and an angle A is formed between each cleaning head and each hollowed inclined plate; the upper surface end of a plurality of wing floodgates all is provided with discernment checking device, discernment checking device with import gate electric connection.
2. The college student safety early warning entrance guard device of claim 1, wherein: the angle a ranges from 45 to 60.
3. The college student safety early warning entrance guard device of claim 1, wherein: the wing gate comprises a gate main body, a blocking assembly used for opening and closing a wing gate channel, a card swiping device and a control box, wherein a cavity is formed in the gate main body, the control box and the card swiping device are both located in the cavity, an opening communicated with the cavity is formed in the front end face of the gate main body, a card swiping area of the card swiping device is arranged in the opening, a first display screen is arranged on the front end face of the gate main body, and the first display screen and the card swiping device are both connected with the control box; the stop subassembly with the control box is connected, be provided with the circuit board in the control box, be provided with MCU on the circuit board, device drive circuit is compared in device drive circuit, import gate drive circuit, first display screen drive circuit, discernment all with MCU connects, MCU sets up has wireless communication module, the device of punching the card passes through wireless communication module and is connected with the database to do benefit to the device of punching the card and carry out personnel in with student's information transmission to the database and compare.
4. The college student safety early warning entrance guard device of claim 3, wherein: the blocking assembly comprises a first gate wing and a second gate wing, the first gate wing is arranged in front of the second gate wing, and a waiting area for a next person to wait for entering is formed between the first gate wing and the second gate wing; be provided with in the floodgate owner body and be used for detecting whether someone infrared sensor in waiting for the district, infrared sensor drive circuit, first wing floodgate drive circuit and second wing floodgate drive circuit all with MCU connects.
5. The college student safety early warning entrance guard device of claim 4, wherein: an identification area for identifying the identity by using an identification and proofreading device is arranged between the second gate wing and the inlet gate; the identification and correction device comprises a box body, wherein a camera used for shooting images and a second display screen used for displaying the identity of a person are arranged on the front face of the box body, the camera is located above the second display screen, and the camera is connected with the database through the wireless communication module so as to be beneficial to personnel comparison between the images shot by the camera and the database.
6. The college student safety early warning entrance guard device of claim 1, wherein: the import gate comprises a first door frame and a second door frame, wherein a first door plate and a second door plate are arranged in the first door frame and the second door frame, a first motor is arranged in an upper cross rod of the first door frame and the second door frame, the first door plate and the second door plate are arranged on two sides of a first motor output shaft, the side surfaces of the first door plate and the second door plate are connected with a first motor output shaft, the first door plate of the first door frame and the second door plate of the second door frame form the import gate, and the import gate is driven by the first motor output shaft to be opened and closed.
7. The college student safety early warning entrance guard device according to claim 5, wherein: the two sides of the inlet gate are provided with third door frames, a second motor is arranged in a cross rod on the third door frames, third door plates are arranged in the third door frames and connected with output shafts of the second motor, and the third door plates correspond to the first door plates and the second door plates of the inlet gate to form an outlet gate.
8. The college student safety early warning entrance guard device of claim 6, wherein: and a third display screen is fixedly arranged between the upper cross rods of the first door frame and the second door frame.
9. The college student safety early warning entrance guard device of claim 1, wherein: still include the clean district of second, the clean district of second is including scraping district and the district that absorbs water, incline road surface is from supreme scraping district that has set gradually first clean district, is used for scraping the surplus mud of sole and the district that absorbs water that is used for absorbing sole moisture down.
10. The college student safety early warning entrance guard device of claim 1, wherein: the lower surface of the sewage tank is provided with an inclined panel which forms an angle B with the lower surface, so that water in the sewage tank can better flow into the cavity; the angle B ranges from 30 ° to 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814219.XU CN211057676U (en) | 2019-10-25 | 2019-10-25 | College university college student safety precaution entrance guard's device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921814219.XU CN211057676U (en) | 2019-10-25 | 2019-10-25 | College university college student safety precaution entrance guard's device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211057676U true CN211057676U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921814219.XU Expired - Fee Related CN211057676U (en) | 2019-10-25 | 2019-10-25 | College university college student safety precaution entrance guard's device |
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| Country | Link |
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| CN (1) | CN211057676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578307A (en) * | 2019-10-25 | 2019-12-17 | 闽江学院 | College university college student safety precaution entrance guard's device |
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2019
- 2019-10-25 CN CN201921814219.XU patent/CN211057676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578307A (en) * | 2019-10-25 | 2019-12-17 | 闽江学院 | College university college student safety precaution entrance guard's device |
| CN110578307B (en) * | 2019-10-25 | 2024-02-02 | 闽江学院 | College university student safety precaution entrance guard device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 |