CN103400430A - Metro door safety monitoring system based on video light curtain - Google Patents
Metro door safety monitoring system based on video light curtain Download PDFInfo
- Publication number
- CN103400430A CN103400430A CN2013102849297A CN201310284929A CN103400430A CN 103400430 A CN103400430 A CN 103400430A CN 2013102849297 A CN2013102849297 A CN 2013102849297A CN 201310284929 A CN201310284929 A CN 201310284929A CN 103400430 A CN103400430 A CN 103400430A
- Authority
- CN
- China
- Prior art keywords
- video
- subway
- door
- light curtain
- information
- 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
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a metro door safety monitoring system based on a video light curtain. The metro door safety monitoring system comprises metro door video detection units (1) and a video information monitoring center (3), wherein more than one metro door video detection unit (1) is arranged; the metro door video detection units (1) and the video information monitoring center (3) are connected through a communication system (2); the video information monitoring center (3) comprises a computer system and a metro door information processing module; the metro door video detection units (1) are used for sending identification information for judging that whether foreign matters exist on a metro wagon box door or not to the video information monitoring center (3) through the communication system (2); the video information monitoring center (3) is used for processing the identification information which is sent by the metro door video detection units (1) and is used for judging that whether the foreign matters exist on the metro wagon box door of each carriage or not. The metro door safety monitoring system based on the video light curtain disclosed by the invention has the advantages of large monitoring range, no existence of detection blind zones, clear video images, high reliability and good safety; redundancy monitoring and identification further improve the safety.
Description
Technical field
The present invention relates to the safety monitoring system of a kind of subway door (being the subway chamber door) switch, particularly a kind of safety monitoring system of subway door based on video light curtain.
Background technology
Present subway is when leaving from station, all shut safely for guaranteeing all subway chamber doors, the train operator hopes all body doors backward by head being stretched out window, see and whether have passenger or foreign matter to be clamped or be in the middle of the subway chamber door by the subway chamber door, only guaranteed all body doors are all normally closed safely, just can send the signal that can drive.But because pilothouse is distant from each railway carriage, add on platform the reason that the people is flowed, often be difficult to see clearly respectively save body door whether all safety normally close, the method is difficult to guarantee that body door do not clamp passenger or other foreign matter, tend to cause major accident, as Shanghai, Shenzhen, await a subway similarly major accident all occurred.Chinese patent (patent No. is 201020634626.5) discloses a kind of safe metro door that utilizes infrared technique, it comprises the subway door main body, doorframe one side in the subway door main body is equipped with infrared launcher, opposite side at doorframe is equipped with infrared receiving device, and infrared launcher is connected with infrared receiving device and is controlled subway door and close with the controller signals transmission that is connected and be connected.Although it can prevent that to a certain degree the passenger from being crushed the event of with the clothing burden, by door, being clamped, the infrared light curtain reliability is bad, some accidents often occur, some security incidents often occur.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art and a kind of safety monitoring system of subway door based on video light curtain is provided, monitoring range of the present invention is large, does not exist and detects blind area, and video image is clear, and reliability is high, and security is good; Redundancy monitoring and identification, further improve safety.
Technical scheme of the present invention is: a kind of safety monitoring system of subway door based on video light curtain, and it comprises subway door video detecting unit and video information Surveillance center; The subway door video detecting unit is more than one, and it is arranged on respectively on the iron body door that respectively saves land, and for detection of the inflow point of subway chamber door or the gap between subway chamber door and platform, whether has foreign matter; The subway door video detecting unit is connected by communication system with video information Surveillance center, realizes communicating by letter between subway door video detecting unit and video information Surveillance center; Video information Surveillance center comprises computer system, warning device and subway door message processing module, the subway door video detecting unit sends to video information Surveillance center the identifying information whether subway chamber door place (gap between inflow point or subway chamber door and platform) has foreign matter to exist by communication system, and video information Surveillance center is used for the no identifying information that has foreign matter to exist of the iron body door that respectively saves land that the subway door video detecting unit is sent and processes.
The further technical scheme of the present invention is: described communication system is wire communication or wireless communication system; Wire communication comprises cable and interface circuit; Wireless communication system comprises wireless transceiver, interface circuit, and interface circuit comprises that level conversion, I/V conversion, signal amplify, the A/D change-over circuit.
The present invention further technical scheme is: described subway door video detecting unit comprises subway door video light curtain device and video light curtain recognition device; Subway door video light curtain device comprises camera, and camera comprises amasthenic lens, imageing sensor and data transmission interface, and amasthenic lens is convex lens, and its focal length is adjustable; Camera is used for the video image that picked-up video light curtain recognition device can be processed.
The present invention further technical scheme is: described video light curtain recognition device comprises digital processing unit and video light curtain identification module; Digital processing unit comprises microprocessor, memory and IO interface, and digital processing unit can carry out digital information processing; Digital processing unit is connected with the data transmission interface of subway door video light curtain device by its IO interface, be used for receiving the video information that subway door video light curtain device sends, can also send control information to subway door video light curtain device simultaneously, to control the duty of subway door video light curtain device, it also connects by its IO interface and communication system; The video light curtain identification module is placed in digital processing unit, it is used for and will identifies from the video light curtain that subway door video light curtain device sends, obtain the judgement information whether the subway door place has foreign matter to exist, and send corresponding information to video information Surveillance center.
The present invention also further technical scheme is: the video light curtain identification module is used for the identifying information of following operation to judge whether that foreign matter exists: the video light curtain identification module first carries out initialization; Then read frame image information data from subway chamber door video light curtain device; Calculate successively the bright spot data of each pixel of this image information, and with the brightness of neighboring pixel point, compare, if exist the brightness of pixel in certain zone obviously low than the bright spot of the pixel of neighboring area, determine that this zone is zone to be detected, and determine the boundary line in this zone to be detected; Whether the boundary line that judges again zone to be detected is continuous, if discontinuous, draw the judgement information that subway chamber door place is blocked by other objects, if continuing 0.5 ± 0.1s all exists and blocks, be judged as subway chamber door place foreign matter is arranged, namely draw the identifying information that foreign matter exists, and the identifying information that will have foreign matter to exist sends video information Surveillance center to by communication system.
The image information that subway chamber door video detecting unit also is used for collecting is sent to video information Surveillance center; Video information Surveillance center can also be used for transmitting control signal to the subway door video detecting unit, to control the operation of subway door video detecting unit.
The present invention compared with prior art has following features:
1. the image that arrives by camera collection of the present invention, surveyed area outdoors in subway body door closing process is detected, with infrared light curtain, compare, monitoring range is large, do not exist and detect blind area, can effectively take precautions against subway when leaving from station the passenger because of the generation by accidents such as subway safe door crush;
2. compare with infrared ray, video image is clear, and reliability is high, and security is good;
3. identify by video image and image recognition information double-point information, improved reliability, the generation of reduction accident greatly.
In order to be illustrated more clearly in the present invention, enumerate following examples, but its to scope of invention without any restriction.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the mounting structure schematic diagram of subway door video detecting unit of the present invention;
Fig. 3 is electric theory structure block diagram of the present invention;
Fig. 4 is the principle of work process flow diagram of video light curtain identification module of the present invention.
Embodiment
Embodiment 1
as Figure 1-3, a kind of safety monitoring system of subway door based on video light curtain, it comprises subway door video detecting unit 1 and video information Surveillance center 3, subway door video detecting unit 1 is more than one, be arranged on respectively on the iron body door that respectively saves land, (clamshell doors is exactly between door leaf for detection of the inflow point of subway chamber door, single open-door is exactly between door leaf and car body) or subway chamber door and platform between whether to have foreign matter (be the inflow point of subway chamber door or the thing whether gap between subway chamber door and platform has obstruction in gap, block the inflow point of subway chamber door or the gap between subway chamber door and platform), and send corresponding video information (video image information of the iron body door periphery that respectively saves land of collection) or/and video identification information (the judgement information of the video image information of the iron body door periphery that respectively saves land of collection, whether foreign matter is namely arranged at the inflow point of subway chamber door and the identifying information in the gap between subway chamber door and platform), video information Surveillance center 3 comprises computer system, warning device and subway door message processing module, video information Surveillance center 3 is used for the video information of the iron body door that respectively saves land that subway door video detecting unit 1 is sent or/and the storage of video identification information, alarm, locking subway startup system etc. is processed operation, and carry out man-machine interaction with the driver or/and the start stop system in controlling with subway connects, whether can start to control subway, video information Surveillance center 3 can also be used for transmitting control signal to subway door video detecting unit 1, to control the operation of subway door video detecting unit 1.
Subway door video detecting unit 1 is connected by communication system 2 with video information Surveillance center 3, realizes communicating by letter between subway door video detecting unit 1 and video information Surveillance center 3; Communication system 2 can be cable and interface circuit thereof, i.e. wire communication; Also can be wireless communication system, wireless communication system comprises the parts such as wireless transceiver, interface circuit; Communication system connects also should comprise the circuit such as level conversion, I/V conversion, signal amplification, A/D conversion; , for guaranteeing the reliability of communication, be mainly the mode that adopts wire communication.
as shown in Figure 3, subway door video detecting unit 1 comprises subway door video light curtain device 11 and video light curtain recognition device 12, subway door video light curtain device 11 comprises camera, and camera comprises amasthenic lens, imageing sensor (being CCD) and data transmission interface, amasthenic lens is convex lens, and its focal length is adjustable, during use, camera is arranged on the top of subway door, be that camera is arranged on subway chamber door centre and is in subway carriages limit (as shown in Figure 2) outdoors, the image of whole doorway periphery (gap between the inflow point of subway chamber door and subway chamber door and platform) all can be photographed, so that video light curtain recognition device 12 can carry out video image, be processed, video light curtain recognition device 12 comprises digital processing unit and video light curtain identification module, digital processing unit comprises microprocessor, memory (NAND FLASH), IO interface and power supply (as shown in Figure 3), and digital processing unit can carry out digital information processing, similar computing machine, digital processing unit is connected with the data transmission interface of subway door video light curtain device 11 by its IO interface, be used for receiving the video information that subway door video light curtain device 11 sends, can also send control information to subway door video light curtain device 11 simultaneously, to control the duty of subway door video light curtain device 11, it is also by its IO interface connect with communication system 2 (with communicating by letter of realization and video information Surveillance center 3), the video light curtain identification module is placed in digital processing unit, it is used for and will identifies from the video light curtain (being video image) that subway door video light curtain device 1 sends, obtain the judgement information whether subway door place (gap between the inflow point of subway chamber door and subway chamber door and platform) has foreign matter to exist, and send corresponding information to video information Surveillance center 3, video information Surveillance center 3 has received foreign matter information, just this foreign matter information is sent to warning system (such as alarms such as loudspeaker), namely toward video information Surveillance center 3, send and stop the pass gate signal, remind driver's driving of can not closing the door, be sent to the subway control system after also this can being had the conversion of foreign matter information, automatically forbid that by the subway control system subway starts (namely lock subway and start system), send simultaneously alerting signal, until foreign matter disappears, video information Surveillance center 3 just can send the signal that can start subway, the subway driver confirms when all subway doors all do not have alerting signal that can start subway leaves subway station.
The video light curtain identification module will be divided into one by one from the video information that subway door video light curtain device 1 transmits, soon video information is divided into image information one by one, then image information is analyzed, identify and whether have foreign matter to stop this subway door place according to related algorithm, stop if having, toward control center, send the identifying information that has foreign matter to exist, reported to the police to the train operator by video information Surveillance center 3, the 3 train train operators of video information Surveillance center confirm when all subway chamber doors all do not have alerting signal to leave subway station.Video light curtain identification module specific works principle process is as follows:
As shown in Figure 4, the video light curtain identification module first carries out initialization; Then read frame image information data from subway chamber door video light curtain device 11; Calculate successively the bright spot data of each pixel of this image information, and with the brightness of neighboring pixel point, compare, if exist the brightness of pixel in certain zone obviously low than the bright spot of the pixel of neighboring area, determine that this zone is zone to be detected, and determine the boundary line in this zone to be detected; Whether the boundary line that judges again (brightness calculation by pixel judges) zone to be detected is continuous, if discontinuous, draw the judgement information that subway chamber door place is blocked by other objects, if continuing 0.5 ± 0.1s(s is chronomere's second) all exist and block, be judged as subway chamber door place foreign matter is arranged, namely draw the identifying information that foreign matter exists, and the identifying information that will have foreign matter to exist sends video information Surveillance center 3 to by communication system 2.
Certainly, whether subway chamber door video detecting unit 1 is except existing the judgement information of foreign matter with to video information Surveillance center 3, transmitting subway chamber door place, can also directly the image information that collects be sent to video information Surveillance center 3, check (driver manually checks or system is checked automatically) for video information Surveillance center 3, with the accuracy of enhancing information judgement.Video information Surveillance center 3 also is provided with the video light curtain display device, and the video light curtain display device is display screen, the video image of sending here from subway chamber door video detecting unit 1 can be shown, observe for the driver, reference, form multistage monitoring, increases security performance.
Claims (10)
1. safety monitoring system of the subway door based on video light curtain, it is characterized in that: it comprises subway door video detecting unit (1) and video information Surveillance center (3); Subway door video detecting unit (1) is more than one, and it is arranged on respectively on the iron body door that respectively saves land, and whether place exists foreign matter for detection of the subway chamber door; Subway door video detecting unit (1) is connected by communication system (2) with video information Surveillance center (3), realizes communicating by letter between subway door video detecting unit (1) and video information Surveillance center (3); Video information Surveillance center (3) comprises department of computer science's subway door message processing module of unifying, subway door video detecting unit (1) sends to video information Surveillance center (3) identifying information whether subway chamber door place has foreign matter to exist by communication system (2), and video information Surveillance center (3) is used for the no identifying information that has foreign matter to exist of the iron body door that respectively saves land that subway door video detecting unit (1) is sent and processes.
2. the safety monitoring system of the subway door based on video light curtain according to claim 1 is characterized in that: described communication system (2) is wire communication or wireless communication system; Wire communication comprises cable and interface circuit; Wireless communication system comprises wireless transceiver, interface circuit, and interface circuit comprises that level conversion, I/V conversion, signal amplify, the A/D change-over circuit.
3. the safety monitoring system of the subway door based on video light curtain according to claim 1 and 2, it is characterized in that: subway door video detecting unit (1) comprises subway door video light curtain device (11) and video light curtain recognition device (12); Subway door video light curtain device (11) comprises that camera, camera comprise amasthenic lens, imageing sensor and data transmission interface, and amasthenic lens is convex lens, and its focal length is adjustable; Camera is used for the video image that picked-up video light curtain recognition device (12) can be processed.
4. the safety monitoring system of the subway door based on video light curtain according to claim 3, it is characterized in that: described video light curtain recognition device (12) comprises digital processing unit and video light curtain identification module; Digital processing unit comprises microprocessor, memory and IO interface, and digital processing unit can carry out digital information processing; Digital processing unit is connected with the data transmission interface of subway door video light curtain device (11) by its IO interface, be used for receiving the video information that subway door video light curtain device (11) sends, can also send control information to subway door video light curtain device (11) simultaneously, to control the duty of subway door video light curtain device (11), it also connects by its IO interface and communication system (2); The video light curtain identification module is placed in digital processing unit, it is used for and will identifies from the video light curtain that subway door video light curtain device (1) sends, obtain the judgement information whether the subway door place has foreign matter to exist, and send corresponding information to video information Surveillance center (3).
5. the safety monitoring system of the subway door based on video light curtain according to claim 4 is characterized in that: described video light curtain identification module is used for the identifying information of following operation to judge whether that foreign matter exists: the video light curtain identification module first carries out initialization; Then read frame image information data from subway chamber door video light curtain device (11); Calculate successively the bright spot data of each pixel of this image information, and with the brightness of neighboring pixel point, compare, if exist the brightness of pixel in certain zone obviously low than the bright spot of the pixel of neighboring area, determine that this zone is zone to be detected, and determine the boundary line in this zone to be detected; Whether the boundary line that judges again zone to be detected is continuous, if discontinuous, draw the judgement information that subway chamber door place is blocked by other objects, if continuing 0.5 ± 0.05s all exists and blocks, be judged as subway chamber door place foreign matter is arranged, namely draw the identifying information that foreign matter exists, and the identifying information that will have foreign matter to exist sends video information Surveillance center (3) to by communication system (2).
6. the safety monitoring system of the subway door based on video light curtain according to claim 1 and 2 is characterized in that: the image information that described subway chamber door video detecting unit (1) also is used for collecting is sent to video information Surveillance center (3).
7. the safety monitoring system of the subway door based on video light curtain according to claim 3 is characterized in that: the image information that described subway chamber door video detecting unit (1) also is used for collecting is sent to video information Surveillance center (3).
8. the safety monitoring system of the subway door based on video light curtain according to claim 4 is characterized in that: the image information that described subway chamber door video detecting unit (1) also is used for collecting is sent to video information Surveillance center (3).
9. the safety monitoring system of the subway door based on video light curtain according to claim 5 is characterized in that: the image information that described subway chamber door video detecting unit (1) also is used for collecting is sent to video information Surveillance center (3).
10. the safety monitoring system of the subway door based on video light curtain according to claim 1 and 2, it is characterized in that: described video information Surveillance center (3) also is used for transmitting control signal to subway door video detecting unit (1), to control the operation of subway door video detecting unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102849297A CN103400430A (en) | 2013-07-09 | 2013-07-09 | Metro door safety monitoring system based on video light curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102849297A CN103400430A (en) | 2013-07-09 | 2013-07-09 | Metro door safety monitoring system based on video light curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103400430A true CN103400430A (en) | 2013-11-20 |
Family
ID=49564041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102849297A Pending CN103400430A (en) | 2013-07-09 | 2013-07-09 | Metro door safety monitoring system based on video light curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103400430A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166367A (en) * | 2014-07-03 | 2014-11-26 | 第二炮兵工程设计研究院 | Centralized signal display system |
| CN104777521A (en) * | 2015-03-24 | 2015-07-15 | 广州市地下铁道总公司 | Binocular-vision-based detection system for foreign matter between train door and platform shield gate, as well as detection method for detection system |
| CN107269150A (en) * | 2017-07-26 | 2017-10-20 | 南通苏通人防防护设备有限公司 | A kind of subway door safety monitoring system based on video light curtain |
| CN108513284A (en) * | 2018-03-30 | 2018-09-07 | 吴敏 | Image scene cloud computing formula monitoring system and method |
| WO2019014983A1 (en) * | 2017-07-21 | 2019-01-24 | 南通苏通人防防护设备有限公司 | Subway door safety monitoring system based on video light curtain |
| CN109410592A (en) * | 2018-11-20 | 2019-03-01 | 武汉兰芯数据定向传媒有限公司 | A kind of intelligent vehicle dynamic monitoring management system |
| CN110363900A (en) * | 2019-08-16 | 2019-10-22 | 安徽慧通轨道交通研究院有限公司 | A kind of gate and control method for rail traffic |
| CN112907796A (en) * | 2019-12-03 | 2021-06-04 | 浙江宇视科技有限公司 | Gate channel system, pedestrian behavior detection method and device, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001010485A (en) * | 1999-06-25 | 2001-01-16 | Kawasaki Heavy Ind Ltd | Full ground control device for platform door |
| CN101105097A (en) * | 2007-08-23 | 2008-01-16 | 上海交通大学 | Platform shield door intelligent control method |
| CN101105096A (en) * | 2007-08-23 | 2008-01-16 | 上海交通大学 | Platform shield door intelligent control system |
| CN101321272A (en) * | 2008-07-02 | 2008-12-10 | 北京中星微电子有限公司 | Safety monitoring system and method of public transport means |
-
2013
- 2013-07-09 CN CN2013102849297A patent/CN103400430A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001010485A (en) * | 1999-06-25 | 2001-01-16 | Kawasaki Heavy Ind Ltd | Full ground control device for platform door |
| CN101105097A (en) * | 2007-08-23 | 2008-01-16 | 上海交通大学 | Platform shield door intelligent control method |
| CN101105096A (en) * | 2007-08-23 | 2008-01-16 | 上海交通大学 | Platform shield door intelligent control system |
| CN101321272A (en) * | 2008-07-02 | 2008-12-10 | 北京中星微电子有限公司 | Safety monitoring system and method of public transport means |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166367A (en) * | 2014-07-03 | 2014-11-26 | 第二炮兵工程设计研究院 | Centralized signal display system |
| CN104777521A (en) * | 2015-03-24 | 2015-07-15 | 广州市地下铁道总公司 | Binocular-vision-based detection system for foreign matter between train door and platform shield gate, as well as detection method for detection system |
| WO2019014983A1 (en) * | 2017-07-21 | 2019-01-24 | 南通苏通人防防护设备有限公司 | Subway door safety monitoring system based on video light curtain |
| CN107269150A (en) * | 2017-07-26 | 2017-10-20 | 南通苏通人防防护设备有限公司 | A kind of subway door safety monitoring system based on video light curtain |
| CN108513284A (en) * | 2018-03-30 | 2018-09-07 | 吴敏 | Image scene cloud computing formula monitoring system and method |
| CN109410592A (en) * | 2018-11-20 | 2019-03-01 | 武汉兰芯数据定向传媒有限公司 | A kind of intelligent vehicle dynamic monitoring management system |
| CN110363900A (en) * | 2019-08-16 | 2019-10-22 | 安徽慧通轨道交通研究院有限公司 | A kind of gate and control method for rail traffic |
| CN112907796A (en) * | 2019-12-03 | 2021-06-04 | 浙江宇视科技有限公司 | Gate channel system, pedestrian behavior detection method and device, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103400430A (en) | Metro door safety monitoring system based on video light curtain | |
| CN212153196U (en) | Anti-trailing unattended pedestrian passageway equipment | |
| CN104691559B (en) | Monitoring station platform safety door and car door interval safe accessory system and its implementation | |
| US9953230B2 (en) | Device, system and method for vehicle safety sensing and alerting by using camera and temperature sensor | |
| CN102976210B (en) | The safety distance of power construction equipment detects prior-warning device and method | |
| CN104847211B (en) | Auxiliary system for safety of platform safety doors and train door sections and implementation method thereof | |
| CN103287943B (en) | A kind of Intelligent elevator management system | |
| CN104499864A (en) | Anti-collision anti-jamming bus safety door system | |
| JP2005141451A (en) | Vehicle monitoring system | |
| CN106022235A (en) | Missing child detection method based on human body detection | |
| CN105809770A (en) | Automobile traveling data recorder with driver identity recognition function | |
| US20190100412A1 (en) | Elevator door control system for detection of obstacle trapping | |
| CN103581527B (en) | Tracking photographing method, device and security protection host in security protection system | |
| CN105225413A (en) | A kind of automobile-used automatic alarm and salvage system | |
| CN105929772A (en) | Infrared imaging human body identification safety early warning apparatus of driving operation | |
| CN211236276U (en) | Intelligent monitoring system for railway platform end intrusion | |
| CN213339118U (en) | Self-service customs clearance checking system for vehicles entering and leaving | |
| US20110069168A1 (en) | Vehicle surveillance system for use in parking lots | |
| CN112406961B (en) | Platform door video obstacle detection control system and method | |
| CN111516708A (en) | Subway platform door obstacle detection early warning system based on machine vision technology | |
| CN105513235A (en) | Elevator machine room invasion detecting system | |
| CN210852356U (en) | Parking vehicle interior life induction and guarantee device with one-key calling function | |
| CN210970838U (en) | Device for automatically monitoring and protecting children and pets in car | |
| CN208284064U (en) | A kind of anti-trailing device of subway gate | |
| KR20150075508A (en) | Monitoring and controlling system of door having camera module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131120 |
|
| RJ01 | Rejection of invention patent application after publication |