CN111583436A - Intelligent attendance machine based on ARM - Google Patents
Intelligent attendance machine based on ARM Download PDFInfo
- Publication number
- CN111583436A CN111583436A CN202010379024.8A CN202010379024A CN111583436A CN 111583436 A CN111583436 A CN 111583436A CN 202010379024 A CN202010379024 A CN 202010379024A CN 111583436 A CN111583436 A CN 111583436A
- Authority
- CN
- China
- Prior art keywords
- arm
- arm chip
- shell
- module
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 230000036760 body temperature Effects 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 208000035473 Communicable disease Diseases 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J5/0025—Living bodies
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
Abstract
An ARM-based intelligent attendance machine comprises a support, wherein a shell is arranged at the top of the support, a loudspeaker and an LED lamp are arranged at the top end of a front panel of the shell in parallel, an LCD screen is arranged below the loudspeaker and the LED lamp, and a fingerprint identification module and an IC card induction module are arranged below the LCD screen in parallel; the top of the shell is provided with a cradle head support, the cradle head support is provided with an infrared distance measuring sensor, a camera and an infrared temperature measuring sensor in parallel, and the shell is internally provided with an ARM chip, a wireless gateway module and a GPRS communication module; the ARM chip is used for processing the acquired data information so as to carry out personnel identification and body temperature monitoring, and storing and managing through software; the invention has the advantages of simple structure, convenient use, accurate identification and easy management of instantaneity.
Description
Technical Field
The invention relates to an attendance machine, in particular to an intelligent attendance machine based on an ARM.
Background
Because offices belong to intensive staff places, if infectious diseases such as influenza occur and measures are not found and taken in time, a large number of staff are likely to be infected with the infectious diseases, so that preventive measures are required to be added to places such as offices or classrooms, and temperature detection is necessary when employees or students check cards and sign on the cards. The traditional attendance machine adopts fingerprint check-in, and non-contact check-in cannot be achieved, so that the intelligent attendance machine with face recognition and temperature detection is very suitable for the application scenes.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the ARM-based intelligent attendance machine, which can intelligently identify the attendance without contact, detect the body temperature of the attendance personnel and store the data for the management of a manager, and has the advantages of simple structure, convenience in use, accuracy in identification, instantaneity and easiness in management.
In order to achieve the purpose, the invention adopts the following technical scheme:
an ARM-based intelligent attendance machine comprises a support 14, wherein a shell 8 is arranged at the top of the support 14, a loudspeaker 5 and an LED lamp 6 are arranged at the top end of a front panel of the shell 8 in parallel, an LCD screen 11 is arranged below the loudspeaker 5 and the LED lamp 6, and a fingerprint identification module 12 and an IC card induction module 13 are arranged below the LCD screen 11 in parallel; the top of the shell 8 is provided with a tripod head support 4, the tripod head support 4 is provided with an infrared distance measuring sensor 1, a camera 2 and an infrared temperature measuring sensor 3 in parallel, and an ARM chip 7, a wireless gateway module 9 and a GPRS communication module 10 are arranged in the shell 8;
the infrared distance measuring sensor 1, the camera 2 and the infrared temperature measuring sensor 3 are respectively connected with the ARM chip 7 through RS232 interfaces;
the holder support 4 is connected with one end of a MAX3232 chip through an RS485 interface, and the other end of the MAX3232 chip is connected with an ARM chip 7 through an RS232 interface;
the loudspeaker 5 and the LED lamp 6 are connected with the ARM chip 7 through GPIO interfaces;
the LCD screen 11 is connected with the ARM chip 7 through a flat cable;
the fingerprint identification module 12 and the IC card induction module 13 are respectively connected with the ARM chip 7 through UART interfaces;
the wireless gateway module 9 and the GPRS communication module 10 are respectively connected with the ARM chip 7 through RS232 interfaces.
The ARM chip 7 writes the collected data into a database of a memory of the ARM chip 7 through running in a Linux operating system and using a sqlite3 tool for storage.
A WEB server program is arranged in the ARM chip 7 and can send the check-in personnel data information recorded in the database to the browser client in the local area network; and an administrator can view the statistics and make modifications to the alarm temperature thresholds in a browser.
The invention has the beneficial effects that:
according to the invention, through arranging the infrared distance measuring sensor 1, the camera 2, the infrared temperature measuring sensor 3, the wireless gateway module 9 and the GPRS communication module 10 to interact with the ARM chip 7, the identification and body temperature detection of a person can be carried out within an effective distance; through information interaction between the fingerprint identification module 12 and the IC card induction module 13 and the ARM chip 7, check-in personnel are identified and verified, meanwhile, the stored data are written in by using a sqlite3 tool through a Linux operating system, and a WEB server program can send data information of the check-in personnel recorded in a database to a browser client side in a local area network and manage the data information.
Drawings
Fig. 1 is an overall structural view of the present invention.
Fig. 2 is a block diagram of the invention.
Fig. 3 is a flow chart of the implementation of the present invention.
FIG. 4 is a flowchart of the WEB server program in the ARM chip according to the present invention.
In the figure: 1. an infrared ranging sensor; 2. a camera; 3. an infrared temperature measuring sensor; 4. a holder bracket; 5. a speaker; 6. an LED lamp; 7. an ARM chip; 8. a housing; 9. a wireless gateway module; 10. a GPRS communication module; 11. an LCD screen; 12. a fingerprint identification module; 13. an IC card sensing module; 14. attendance machine support.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the ARM-based intelligent attendance machine comprises a support 14, wherein a shell 8 is arranged at the top of the support 14, a loudspeaker 5 and an LED lamp 6 are arranged at the top end of a front panel of the shell 8 in parallel, an LCD screen 11 is arranged below the loudspeaker 5 and the LED lamp 6, and a fingerprint identification module 12 and an IC card induction module 13 are arranged below the LCD screen 11 in parallel; the top of the shell 8 is provided with a tripod head support 4, the tripod head support 4 is provided with an infrared distance measuring sensor 1, a camera 2 and an infrared temperature measuring sensor 3 in parallel, and an ARM chip 7, a wireless gateway module 9 and a GPRS communication module 10 are arranged in the shell 8;
the infrared distance measuring sensor 1, the camera 2 and the infrared temperature measuring sensor 3 are respectively connected with the ARM chip 7 through RS232 interfaces; the system comprises an infrared distance measuring sensor 1, a camera 2, an ARM chip and an infrared temperature measuring sensor 3, wherein the infrared distance measuring sensor 1 is used for detecting whether a person who signs in is in a face recognition distance range, the camera 2 is used for collecting face information for an ARM chip to recognize, and the infrared temperature measuring sensor 3 is used for detecting the body temperature of the person who signs in;
the holder support 4 is connected with one end of a MAX3232 chip through an RS485 interface, and the other end of the MAX3232 chip is connected with an ARM chip 7 through an RS232 interface;
the PTS-326 model is adopted by the holder bracket 4; the camera 2, the infrared distance measuring sensor 1 and the infrared temperature measuring sensor 3 which are carried on the cradle head are enabled to realize 355-degree intelligent rotation according to the positions of the persons who sign in by controlling the rotation of a motor in the cradle head;
the loudspeaker 5 and the LED lamp 6 are connected with the ARM chip 7 through GPIO interfaces and used for performing sound-light alarm or voice prompt;
the LCD screen 11 is connected with the ARM chip 7 through a flat cable and is used for displaying real-time pictures of the camera and information or information of the person signing in;
the fingerprint identification module 12 and the IC card induction module 13 are respectively connected with the ARM chip 7 through UART interfaces and are used for carrying out fingerprint identification verification on the person who signs in;
the fingerprint identification module 12 is of the AS608 type.
The IC card sensing module 13 is of the MFRC522 type.
The wireless gateway module 9 and the GPRS communication module 10 are respectively connected with the ARM chip 7 through RS232 interfaces, wherein the wireless gateway module 9 is used for sending data obtained by the intelligent attendance machine to a local area network, and the GPRS communication module 10 is used for sending short messages through a GPRS network.
The wireless gateway module 9 is of HF2211 type.
The ARM chip 7 adopts an ARM Exynos4412 model and is used for data processing and program operation.
The ARM chip 7 writes the collected data into a database of a memory of the ARM chip 7 through running in a Linux operating system and using a sqlite3 tool for storage.
A WEB server is arranged in the ARM chip 7 and can send data information of the check-in personnel recorded in the database to the browser client in the local area network; and an administrator can view the statistics and make modifications to the alarm temperature thresholds in a browser.
The working principle of the invention is as follows:
referring to fig. 3 and 4, after the infrared distance measuring sensor 1 detects that a person approaches, if the person who signs in is too far away or too close to the attendance machine and is not in the detection range of the camera 2 and the infrared temperature measuring sensor 3, the attendance machine reminds the person who signs in to move back and forth through the loudspeaker 5; and then the ARM chip 7 controls the holder support 4 to rotate according to the position of the person who signs in, and adjusts the directions of the camera 2 and the infrared temperature measurement sensor 3 to just face the person who signs in.
After the personnel of registering correctly get into camera 2 collection within range, ARM chip 7 can be in real time with the image display that camera 2 gathered on LCD screen 11, and the display process goes on with the process of registering simultaneously. In the rest of the time, the LCD screen 11 displays weather information acquired through the network.
The infrared temperature sensor 3 then detects the body temperature of the person who checked in and displays it on the LCD screen 11. If the body temperature of the check-in personnel is within the threshold range, entering a check-in process; if the body temperature of the person who signs in is higher than the temperature threshold value, the person information is recorded through the face information identified by the camera, and the manager is reminded through the loudspeaker 5 and the LED lamp 6 through sound-light alarm.
After entering the check-in process, the camera 2 starts to collect the face information, the ARM chip 7 compares the collected face information with the face of a person which is input into the system in advance, if the comparison is successful, the person is checked in, and the person is checked in successfully. And if the face comparison fails, the face recognition check-in fails.
If the face recognition is not passed, but the user determines that the user registration information exists in the memory of the ARM chip 7, the user can perform fingerprint verification on a fingerprint recognition module 12 at the lower left of the attendance machine so as to sign in; if the attendance check-in machine still can not pass through, the administrator needs to swipe the card through the IC card induction module 13 at the right lower part of the attendance check-in machine to enter the system to sign in for the attendance check-in personnel.
Whether the check-in person successfully checks in or not, the ARM chip 7 writes the information of the check-in person, the body temperature and the time of the check-in person into a database of a memory of the ARM chip 7, and if the face recognition of the check-in person fails, the personal information of the check-in person cannot be matched through the face recognition, the ARM chip 7 stores the pictures collected during the face recognition into the database.
The intelligent attendance machine has the function of a WEB server, and can provide WEB pages for users in a local area network through the wireless gateway module 9.
The administrator uses the browser to log in a specified webpage in the local area network, and a WEB server program of the intelligent attendance machine sends related content to the webpage through the wireless gateway module 9. The administrator can inquire the information of the attendance card punching personnel every day in the webpage and can also screen and check the information of the personnel with abnormal temperature every day. According to different temperature measurement requirements, an administrator can modify the temperature threshold value of the body temperature of the detected personnel in the intelligent attendance machine through the webpage.
When the abnormal body temperature of the person is detected, the attendance machine sends a short message containing the information of the person to the administrator through the GPRS communication module 10.
When a new person needs to input information, the administrator needs to use the IC card to swipe the card to enter the person information input flow, and after entering the person information input flow, the ARM chip 7 starts to collect the face of the person and writes the face of the person into the memory of the ARM chip 7 to input the information.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. The utility model provides an intelligence attendance machine based on ARM, includes support (14), support (14) top is provided with shell (8), its characterized in that: a loudspeaker (5) and an LED lamp (6) are arranged at the top end of the front panel of the shell (8) in parallel, an LCD screen (11) is arranged below the loudspeaker (5) and the LED lamp (6), and a fingerprint identification module (12) and an IC card induction module (13) are arranged below the LCD screen (11) in parallel; the top of the shell (12) is provided with a cradle head support (4), the cradle head support (4) is provided with an infrared distance measuring sensor (1), a camera (2) and an infrared temperature measuring sensor (3) in parallel, and an ARM chip (7), a wireless gateway module (9) and a GPRS communication module (10) are arranged in the shell (12);
the infrared distance measuring sensor (1), the camera (2) and the infrared temperature measuring sensor (3) are respectively connected with the ARM chip (7) through RS232 interfaces;
the holder support (4) is connected with one end of a MAX3232 chip through an RS485 interface, and the other end of the MAX3232 chip is connected with an ARM chip (7) through an RS232 interface;
the loudspeaker (5) and the LED lamp (6) are connected with the ARM chip (7) through the GPIO interface;
the LCD screen (11) is connected with the ARM chip 7 through a flat cable;
the fingerprint identification module (12) and the IC card induction module (13) are respectively connected with the ARM chip (7) through a UART interface;
the wireless gateway module (9) and the GPRS communication module (10) are respectively connected with the ARM chip (7) through RS232 interfaces.
2. The ARM-based intelligent attendance machine of claim 1, wherein: the ARM chip (7) writes the collected data into a database of a memory of the ARM chip (7) for storage by running in a Linux operating system and using a sqlite3 tool.
3. The ARM-based intelligent attendance machine of claim 1, wherein: a WEB server is arranged in the ARM chip (7), and can send the check-in personnel data information recorded in the database to the browser client in the local area network; and an administrator can view the statistics and make modifications to the alarm temperature thresholds in a browser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010379024.8A CN111583436A (en) | 2020-05-07 | 2020-05-07 | Intelligent attendance machine based on ARM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010379024.8A CN111583436A (en) | 2020-05-07 | 2020-05-07 | Intelligent attendance machine based on ARM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111583436A true CN111583436A (en) | 2020-08-25 |
Family
ID=72124744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010379024.8A Pending CN111583436A (en) | 2020-05-07 | 2020-05-07 | Intelligent attendance machine based on ARM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111583436A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112785742A (en) * | 2021-01-22 | 2021-05-11 | 广东交通职业技术学院 | Attendance system and control method thereof |
| CN113255503A (en) * | 2021-05-18 | 2021-08-13 | 深圳市威尔电器有限公司 | Human face thermal imaging and temperature measuring integrated machine |
| CN113701896A (en) * | 2021-09-23 | 2021-11-26 | 辽宁省计量科学研究院 | Multifunctional non-contact infrared temperature measurement system |
| WO2022095089A1 (en) * | 2020-11-09 | 2022-05-12 | 苏州博瑞尔特信息科技有限公司 | Attendance check apparatus having body temperature measurement function |
| CN114928685A (en) * | 2022-04-01 | 2022-08-19 | 长沙学院 | Face recognition device and method capable of off-line |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154297A (en) * | 2006-09-28 | 2008-04-02 | 王冠男 | Multifunctional color-screen personal identification terminal machine |
| CN203825670U (en) * | 2014-04-11 | 2014-09-10 | 深圳市中控生物识别技术有限公司 | Fingerprint-card punching-photographing integrated attendance apparatus |
| CN204087286U (en) * | 2014-09-12 | 2015-01-07 | 徐州工业职业技术学院 | Classroom intelligence is registered card reader |
| CA2920688A1 (en) * | 2013-08-12 | 2015-02-19 | University Health Network | Hand hygiene compliance |
| CN205942810U (en) * | 2016-06-13 | 2017-02-08 | 安徽商贸职业技术学院 | Cloud attendance machine |
| CN206505461U (en) * | 2017-03-03 | 2017-09-19 | 泸州市众信信息技术有限公司 | A kind of Work attendance device of energy face and fingerprint recognition |
| CN206711176U (en) * | 2017-04-11 | 2017-12-05 | 广州市贺氏办公设备有限公司 | A kind of cloud attendance recorder with gate function |
| CN109584123A (en) * | 2018-11-28 | 2019-04-05 | 重庆第二师范学院 | A kind of student attendance managing device |
| CN209055979U (en) * | 2019-05-24 | 2019-07-02 | 云南电网有限责任公司昆明供电局 | Intelligent attendance system based on biometrics identification technology |
| CN110751744A (en) * | 2019-12-06 | 2020-02-04 | 江苏海事职业技术学院 | Attendance device and system for face recognition for campus management |
-
2020
- 2020-05-07 CN CN202010379024.8A patent/CN111583436A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154297A (en) * | 2006-09-28 | 2008-04-02 | 王冠男 | Multifunctional color-screen personal identification terminal machine |
| CA2920688A1 (en) * | 2013-08-12 | 2015-02-19 | University Health Network | Hand hygiene compliance |
| CN203825670U (en) * | 2014-04-11 | 2014-09-10 | 深圳市中控生物识别技术有限公司 | Fingerprint-card punching-photographing integrated attendance apparatus |
| CN204087286U (en) * | 2014-09-12 | 2015-01-07 | 徐州工业职业技术学院 | Classroom intelligence is registered card reader |
| CN205942810U (en) * | 2016-06-13 | 2017-02-08 | 安徽商贸职业技术学院 | Cloud attendance machine |
| CN206505461U (en) * | 2017-03-03 | 2017-09-19 | 泸州市众信信息技术有限公司 | A kind of Work attendance device of energy face and fingerprint recognition |
| CN206711176U (en) * | 2017-04-11 | 2017-12-05 | 广州市贺氏办公设备有限公司 | A kind of cloud attendance recorder with gate function |
| CN109584123A (en) * | 2018-11-28 | 2019-04-05 | 重庆第二师范学院 | A kind of student attendance managing device |
| CN209055979U (en) * | 2019-05-24 | 2019-07-02 | 云南电网有限责任公司昆明供电局 | Intelligent attendance system based on biometrics identification technology |
| CN110751744A (en) * | 2019-12-06 | 2020-02-04 | 江苏海事职业技术学院 | Attendance device and system for face recognition for campus management |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022095089A1 (en) * | 2020-11-09 | 2022-05-12 | 苏州博瑞尔特信息科技有限公司 | Attendance check apparatus having body temperature measurement function |
| CN112785742A (en) * | 2021-01-22 | 2021-05-11 | 广东交通职业技术学院 | Attendance system and control method thereof |
| CN113255503A (en) * | 2021-05-18 | 2021-08-13 | 深圳市威尔电器有限公司 | Human face thermal imaging and temperature measuring integrated machine |
| CN113701896A (en) * | 2021-09-23 | 2021-11-26 | 辽宁省计量科学研究院 | Multifunctional non-contact infrared temperature measurement system |
| CN114928685A (en) * | 2022-04-01 | 2022-08-19 | 长沙学院 | Face recognition device and method capable of off-line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111583436A (en) | Intelligent attendance machine based on ARM | |
| CN203242026U (en) | Student dormitory management system | |
| CN204480251U (en) | The self-service detection system of a kind of driver's physical qualification | |
| CN103841367A (en) | Monitoring system | |
| CN112511648A (en) | Intelligent information acquisition display device and system for epidemic situation prevention and control | |
| CN113160445B (en) | Attendance checking, temperature measuring and antitheft all-in-one machine system and intelligent interaction method thereof | |
| CN112233263A (en) | Attendance management system based on face image recognition | |
| CN113973263A (en) | Smart campus system based on WIFI positioning | |
| CN114420302A (en) | Intelligent epidemic prevention control system for enterprises and public institutions | |
| CN206097208U (en) | Iris attendance machine | |
| CN203287954U (en) | Card punching system based on human face recognition | |
| CN205722006U (en) | A kind of intelligent campus Work attendance device based on Internet of Things | |
| CN205091742U (en) | Panel computer with attendance record function | |
| CN211087319U (en) | Intelligent card punching machine | |
| CN205680139U (en) | The fingerprint attendance system of employee in a kind of enterprise management system | |
| CN206557863U (en) | A kind of classroom intelligent Checking on Work Attendance device | |
| CN210052203U (en) | Attendance check-in system based on multiple identification methods | |
| CN113887277B (en) | Handheld identity card reader and information acquisition and sign-in method based on same | |
| CN108765616A (en) | A kind of school student attendance system and method based on recognition of face | |
| CN205942810U (en) | Cloud attendance machine | |
| CN211787271U (en) | Barrier gate access control service robot with face recognition and infrared temperature measurement functions | |
| CN210428584U (en) | Passenger flow statistical system | |
| CN113032822A (en) | AI safety management data system | |
| CN202771442U (en) | Portable face identification equipment | |
| CN204215444U (en) | Post house, library |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200825 |
|
| RJ01 | Rejection of invention patent application after publication |