CN104140022A - Advisement player and elevator running dynamic monitoring system - Google Patents

Advisement player and elevator running dynamic monitoring system Download PDF

Info

Publication number
CN104140022A
CN104140022A CN201310162599.4A CN201310162599A CN104140022A CN 104140022 A CN104140022 A CN 104140022A CN 201310162599 A CN201310162599 A CN 201310162599A CN 104140022 A CN104140022 A CN 104140022A
Authority
CN
China
Prior art keywords
elevator
unit
management
fault
advertisement machine
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
Application number
CN201310162599.4A
Other languages
Chinese (zh)
Inventor
刘芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN AMJOY TECHNOLOGY Co Ltd
Original Assignee
TIANJIN AMJOY TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANJIN AMJOY TECHNOLOGY Co Ltd filed Critical TIANJIN AMJOY TECHNOLOGY Co Ltd
Priority to CN201310162599.4A priority Critical patent/CN104140022A/en
Publication of CN104140022A publication Critical patent/CN104140022A/en
Pending legal-status Critical Current

Links

Landscapes

  • Indicating And Signalling Devices For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The invention relates to a novel intelligent advisement player and elevator running dynamic monitoring system. The system solves the problems that in the elevator running process, alarms are not given in time, and the alarms cannot be effectively monitored and managed. The mobile network technology, a computer remote monitoring platform and an intelligent terminal are taken as the basis, an existing communication network is utilized for achieving dynamic real-time monitoring and management of elevator safe running, meanwhile the audio and video placating function can be achieved, and finally the intelligence and visual management of elevator safety can be achieved. A management and monitoring platform is provided for remote monitoring display and fault management of elevator faults and advertising medium information playing. Particularly, the problems that according to the elevator faults, an alarm cannot be given in time, rescue cannot be carried out in time, and the physical and mental hurt to trapped persons is caused are effectively solved, when the faults happen, texts and voice can be played in time to placate the trapped persons, conversions of passengers, the property and maintenance persons can be automatically connected, and an elevator safety management department performs full-time online administrative supervision and management on the monitored accident.

Description

Advertisement machine and elevator operation state monitored control system
[technical field]
The present invention relates to a kind of Novel intelligent advertisement machine and elevator operation state monitored control system, this system is according to advanced mobile network's technology, intellectualized sensor equipment and database management language and platform, thereby realize the management of the remote intelligent of elevator, visual dynamic monitoring, for elevator faults remote monitor and control demonstration and failure record, advertising media's information is play that management and monitoring platform is provided.
[background technology]
Intellectualized visual elevator operation state management system for monitoring Shi Wei advertising company, elevator safety department, property, elevator manufacturer, elevator maintain and protection company, the visual elevator safety management imformation system of elevator ride person's research and development, that elevator faults is got rid of fast, the dynamic management monitor supervision platform that personnel sue and labour in time, the full-time online record of elevator information data detecting by this system equipment is installed, realized lift running safety monitoring, fault management, personnel sue and labour, maintaining-managing system, intellectuality and normalization, particularly the information publish administrating system of media advertisement machine is pacified trapped personnel with word and language, from the passenger that is dynamically connected, property, repair and maintenance Three-Way Calling, the executive supervision of the full-time monitoring of elevator safety supervisory management zone, make visual elevator operation state management system for monitoring become the reliable security guard of citizen, return society of advertising company, serve the general public, the instrument of results economic interests.
[summary of the invention]
The object of the invention is the warning that exists for elevator operation not in time, problem that cannot effective monitoring management, take mobile network's technology, computer remote monitor supervision platform and intelligent terminal machine as basis, utilize existing communication network to realize the dynamic Real-Time Monitoring management of elevator safety operation, possess again acoustic image screen and pacify function, finally realized intellectuality, the visualized management of elevator safety simultaneously.
The present invention is achieved in that by advertisement machine and with elevator long distance dynamic monitoring, information and plays and use computer network and electromechanical integration technology actv. to integrate, set up a set of intellectuality, informationalized remote monitoring and administration platform; System is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, monitor terminal by elevator monitoring apparatus and remote alarming device form, switch gate unit and the backup power of Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Elevator monitoring apparatus and remote alarming device are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module; Multipurpose media advertisement machine is positioned at lift car, can show that elevator operation information, failure message are reported to the police, fault is pacified word and voice message and multimedia advertising broadcasting; Multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top; The switch gate unit of Hall element is placed in elevator cage door both sides, and the impulse singla of its generation is connected with elevator monitoring apparatus, the switching of judgement gate; System has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, help safety control supervisory management zone, elevator manufacturer, the unit of maintenance and property applying unit to realize the security monitoring of Intelligent elevator dynamic remote, Multipurpose media advertisement machine has become the indispensable visualisation platforms of intelligent Remote elevator monitoring system simultaneously in broadcast advertisement information.
System is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, Communications service district management data connects and data exchange, deposit valid data in data bank, web page server administrative client interface, the data in resolution data storehouse.
Monitor terminal is by monitoring and switch gate unit and the backup power of remote alarming terminal, Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Monitoring and remote alarming terminal are comprised of elevator monitoring apparatus and remote alarming device, are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module.
Multipurpose media advertisement machine is positioned at lift car, can show that elevator operation information, failure message are reported to the police, fault is pacified word and voice message and multimedia advertising broadcasting, this media advertisement machine shows real-time time, elevator operation information, video and advertising message, the Word message captions of displaying by screens, and the blank screen detection of elevator monitoring apparatus Long-distance Control Multipurpose media advertisement machine and control, start and stop, video and the advertising message of sound, elevator faults are pacified and under soundplay and power down mode, started backup power and support advertising media's machine sowing to put.
Multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top, and multifunctional human sensing unit is comprised of microwave remote sensor module; Fault intercommunication unit connects respectively Mike, elevator monitoring apparatus and Multipurpose media advertisement machine; Automatic emergency light unit by LED lamp group connect respectively photoconductive cell module, microwave remote sensor module forms, this assembly can detect in car, have or not passenger, fault call, play pacify language, emergency light is opened automatically while having a power failure.
The switch gate unit of Hall element is placed in elevator cage door both sides, the human detection unit and the elevator monitoring apparatus that connect respectively pyroelectric sensor, the impulse singla of its generation is connected with elevator monitoring apparatus, the open and-shut mode of judgement gate, to in car, have or not passenger, open and close gate signal feedback monitor terminal to monitor supervision platform, so that data bank resolution data.
This equipment has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, monitor terminal is connected with telco provider by the mobile network of telecom operators of communication controller, realizes data up-downgoing and processes, and telecom operators are by the communication server of Internet and monitor supervision platform, database server, web page server is connected, realize interconnecting of monitor terminal and the monitor supervision platform communication server, when fault occurs, monitor terminal is carried out after relevant necessary processing at the communication server, store data into database server, monitor terminal is according to the multifunctional human sensing unit connecting simultaneously, fault intercommunication unit, automatic emergency light assembly, the switch gate unit of Hall element, the data judgement that the human detection unit of microwave remote sensor is uploaded: have or not passenger in lift car, whether power-off, whether gate closes, and human detection unit inspection goes out to have or not passenger, if without passenger's monitor supervision platform by HTTP connect log in communication server address with short message mode to related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police, simultaneously the monitor supervision platform all time record event of government's safety control supervisory management zone, storage data, backup event wipe-out mode and time, if having passenger's monitor terminal according to multifunctional human sensing unit, fault intercommunication, automatic emergency light assembly, the switch gate unit of Hall element and Rich media machine start, and Rich media machine sowing is put and pacified word and pacify voice, passenger and related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police by fault intercommunication unit intercommunication, and monitor supervision platform is reported to the police with short message mode simultaneously, the full-time online record event of monitor supervision platform of safety control supervisory management zone, storage data, backup event wipe-out mode and time, the supervision authority of office of travelling.
Below in conjunction with accompanying drawing, structure of the present invention is further described.
[accompanying drawing explanation]
Accompanying drawing is system schematic of the present invention.
[specific embodiment]
By advertisement machine and with elevator long distance dynamic monitoring, information, play and use computer network and electromechanical integration technology actv. to integrate, set up a set of intellectuality, informationalized remote monitoring and administration platform; System is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, monitor terminal by elevator monitoring apparatus and remote alarming device form, switch gate unit and the backup power of Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Elevator monitoring apparatus and remote alarming device are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module; Multipurpose media advertisement machine is positioned at lift car, can show that elevator operation information, failure message are reported to the police, fault is pacified word and voice message and multimedia advertising broadcasting; Multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top; The switch gate unit of Hall element is placed in elevator cage door both sides, and the impulse singla of its generation is connected with elevator monitoring apparatus, the switching of judgement gate; System has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, help safety control supervisory management zone, elevator manufacturer, the unit of maintenance and property applying unit to realize the security monitoring of Intelligent elevator dynamic remote, Multipurpose media advertisement machine has become the indispensable visualisation platforms of intelligent Remote elevator monitoring system simultaneously in broadcast advertisement information.
System is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, Communications service district management data connects and data exchange, deposit valid data in data bank, web page server administrative client interface, the data in resolution data storehouse.
Monitor terminal is by monitoring and switch gate unit and the backup power of remote alarming terminal, Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Monitoring and remote alarming terminal are comprised of elevator monitoring apparatus and remote alarming device, are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module.
Multipurpose media advertisement machine is positioned at lift car, can show that elevator operation information, failure message are reported to the police, fault is pacified word and voice message and multimedia advertising broadcasting, this media advertisement machine shows real-time time, elevator operation information, video and advertising message, the Word message captions of displaying by screens, and the blank screen detection of elevator monitoring apparatus Long-distance Control Multipurpose media advertisement machine and control, start and stop, video and the advertising message of sound, elevator faults are pacified and under soundplay and power down mode, started backup power and support advertising media's machine sowing to put.
Multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top, and multifunctional human sensing unit is comprised of microwave remote sensor module; Fault intercommunication unit connects respectively Mike, elevator monitoring apparatus and Multipurpose media advertisement machine; Automatic emergency light unit by LED lamp group connect respectively photoconductive cell module, microwave remote sensor module forms, this assembly can detect in car, have or not passenger, fault call, play pacify language, emergency light is opened automatically while having a power failure.
The switch gate unit of Hall element is placed in elevator cage door both sides, the human detection unit and the elevator monitoring apparatus that connect respectively pyroelectric sensor, the impulse singla of its generation is connected with elevator monitoring apparatus, the open and-shut mode of judgement gate, to in car, have or not passenger, open and close gate signal feedback monitor terminal to monitor supervision platform, so that data bank resolution data.
Working process of the present invention is as follows:
This system has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, monitor terminal is connected with telco provider by the mobile network of telecom operators of communication controller, realizes data up-downgoing and processes, and telecom operators are by the communication server of Internet and monitor supervision platform, database server, web page server is connected, realize interconnecting of monitor terminal and the monitor supervision platform communication server, when fault occurs, monitor terminal is carried out after relevant necessary processing at the communication server, store data into database server, monitor terminal is according to the multifunctional human sensing unit connecting simultaneously, fault intercommunication unit, automatic emergency light assembly, the switch gate unit of Hall element, the data judgement that the human detection unit of microwave remote sensor is uploaded: have or not passenger in lift car, whether power-off, whether gate closes, and human detection unit inspection goes out to have or not passenger, if without passenger's monitor supervision platform by HTTP connect log in communication server address with short message mode to related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police, simultaneously the monitor supervision platform all time record event of government's safety control supervisory management zone, storage data, backup event wipe-out mode and time, if having passenger's monitor terminal according to multifunctional human sensing unit, fault intercommunication, automatic emergency light assembly, the switch gate unit of Hall element and Rich media machine start, and Rich media machine sowing is put and pacified word and pacify voice, passenger and related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police by fault intercommunication unit intercommunication, and monitor supervision platform is reported to the police with short message mode simultaneously, the full-time online record event of monitor supervision platform of safety control supervisory management zone, storage data, backup event wipe-out mode and time, the supervision authority of office of travelling.

Claims (7)

1. an advertisement machine and elevator operation state monitored control system, it is characterized in that: by advertisement machine and with elevator long distance dynamic monitoring, information, play and use computer network and electromechanical integration technology actv. to integrate, set up a set of intellectuality, informationalized remote monitoring and administration platform; System is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, monitor terminal by elevator monitoring apparatus and remote alarming device form, switch gate unit and the backup power of Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Elevator monitoring apparatus and remote alarming device are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module; Multipurpose media advertisement machine is positioned at lift car, can show that elevator operation information, failure message are reported to the police, fault is pacified word and voice message and multimedia advertising broadcasting; Multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top; The switch gate unit of Hall element is placed in elevator cage door both sides, and the impulse singla of its generation is connected with elevator monitoring apparatus, the switching of judgement gate; System has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, help safety control supervisory management zone, elevator manufacturer, the unit of maintenance and property applying unit to realize the security monitoring of Intelligent elevator dynamic remote, Multipurpose media advertisement machine has become the indispensable visualisation platforms of intelligent Remote elevator monitoring system simultaneously in broadcast advertisement information.
2. advertisement machine according to claim 1 and elevator operation state monitored control system, it is characterized in that: system is comprised of server group, monitor supervision platform and monitor terminal, monitor supervision platform is comprised of communication server, database server, web page server, Communications service district management data connects and data exchange, deposit valid data in data bank, web page server administrative client interface, the data in resolution data storehouse.
3. advertisement machine according to claim 1 and elevator operation state monitored control system, is characterized in that: monitor terminal is by monitoring and switch gate unit and the backup power of remote alarming terminal, Multipurpose media advertisement machine, multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly, Hall element form; Monitoring and remote alarming terminal are comprised of elevator monitoring apparatus and remote alarming device, are placed on elevator car top, and remote alarming device connects monitor supervision platform management server, database server by the mobile network of wireless communication module.
4. advertisement machine according to claim 1 and elevator operation state monitored control system, it is characterized in that: Multipurpose media advertisement machine is positioned at lift car, can show elevator operation information, failure message is reported to the police, fault is pacified word and voice message and multimedia advertising and is play, this media advertisement machine shows real-time time, elevator operation information, video and advertising message, the Word message captions of displaying by screens, the blank screen of elevator monitoring apparatus Long-distance Control Multipurpose media advertisement machine detects and controls, the start and stop of sound, video and advertising message, elevator faults is pacified and under soundplay and power down mode, is started backup power and support advertising media's machine sowing to put.
5. advertisement machine according to claim 1 and elevator operation state monitored control system, it is characterized in that: multifunctional human sensing unit, fault intercommunication unit, automatic emergency light assembly are positioned at lift car inner top, and multifunctional human sensing unit is comprised of microwave remote sensor module; Fault intercommunication unit connects respectively Mike, elevator monitoring apparatus and Multipurpose media advertisement machine; Automatic emergency light unit by LED lamp group connect respectively photoconductive cell module, microwave remote sensor module forms, this assembly can detect in car, have or not passenger, fault call, play pacify language, emergency light is opened automatically while having a power failure.
6. advertisement machine according to claim 1 and elevator operation state monitored control system, it is characterized in that: the switch gate unit of Hall element is placed in elevator cage door both sides, the human detection unit and the elevator monitoring apparatus that connect respectively pyroelectric sensor, the impulse singla of its generation is connected with elevator monitoring apparatus, the open and-shut mode of judgement gate, to in car, have or not passenger, open and close gate signal feedback monitor terminal to monitor supervision platform, so that data bank resolution data.
7. advertisement machine according to claim 1 and elevator operation state monitored control system, is characterized in that: this system has realized that lift running safety monitoring, fault management, personnel sue and labour, the visual remote informationization management of maintenance management, monitor terminal is connected with telco provider by the mobile network of telecom operators of communication controller, realizes data up-downgoing and processes, and telecom operators are by the communication server of Internet and monitor supervision platform, database server, web page server is connected, realize interconnecting of monitor terminal and the monitor supervision platform communication server, when fault occurs, monitor terminal is carried out after relevant necessary processing at the communication server, store data into database server, monitor terminal is according to the multifunctional human sensing unit connecting simultaneously, fault intercommunication unit, automatic emergency light assembly, the switch gate unit of Hall element, the data judgement that the human detection unit of microwave remote sensor is uploaded: have or not passenger in lift car, whether power-off, whether gate closes, and human detection unit inspection goes out to have or not passenger, if without passenger's monitor supervision platform by HTTP connect log in communication server address with short message mode to related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police, simultaneously the monitor supervision platform all time record event of government's safety control supervisory management zone, storage data, backup event wipe-out mode and time, if having passenger's monitor terminal according to multifunctional human sensing unit, fault intercommunication, automatic emergency light assembly, the switch gate unit of Hall element and Rich media machine start, and Rich media machine sowing is put and pacified word and pacify voice, passenger and related elevator manufacturer, the unit of maintenance and property applying unit are reported to the police by fault intercommunication unit intercommunication, and monitor supervision platform is reported to the police with short message mode simultaneously, the full-time online record event of monitor supervision platform of safety control supervisory management zone, storage data, backup event wipe-out mode and time, the supervision authority of office of travelling.
CN201310162599.4A 2013-05-06 2013-05-06 Advisement player and elevator running dynamic monitoring system Pending CN104140022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310162599.4A CN104140022A (en) 2013-05-06 2013-05-06 Advisement player and elevator running dynamic monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310162599.4A CN104140022A (en) 2013-05-06 2013-05-06 Advisement player and elevator running dynamic monitoring system

Publications (1)

Publication Number Publication Date
CN104140022A true CN104140022A (en) 2014-11-12

Family

ID=51849380

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310162599.4A Pending CN104140022A (en) 2013-05-06 2013-05-06 Advisement player and elevator running dynamic monitoring system

Country Status (1)

Country Link
CN (1) CN104140022A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331054A (en) * 2014-11-17 2015-02-04 天地科技股份有限公司 Remote data monitoring and analyzing system and method for loading station
CN106006276A (en) * 2016-05-17 2016-10-12 安徽泰然信息技术工程有限公司 Intelligent elevator management system of building
CN109179128A (en) * 2018-11-08 2019-01-11 南京三宝弘正视觉科技有限公司 A kind of elevator monitoring apparatus, system and method
US10745241B2 (en) 2016-08-24 2020-08-18 Otis Elevator Company Communication with a trapped passenger in a transportation system
CN112299178A (en) * 2020-10-26 2021-02-02 广州朗国电子科技有限公司 Elevator trapped help calling method, device and system based on advertising machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331054A (en) * 2014-11-17 2015-02-04 天地科技股份有限公司 Remote data monitoring and analyzing system and method for loading station
CN106006276A (en) * 2016-05-17 2016-10-12 安徽泰然信息技术工程有限公司 Intelligent elevator management system of building
US10745241B2 (en) 2016-08-24 2020-08-18 Otis Elevator Company Communication with a trapped passenger in a transportation system
CN109179128A (en) * 2018-11-08 2019-01-11 南京三宝弘正视觉科技有限公司 A kind of elevator monitoring apparatus, system and method
CN112299178A (en) * 2020-10-26 2021-02-02 广州朗国电子科技有限公司 Elevator trapped help calling method, device and system based on advertising machine
CN112299178B (en) * 2020-10-26 2021-08-31 广州朗国电子科技有限公司 Elevator trapped help calling method, device and system based on advertising machine

Similar Documents

Publication Publication Date Title
CN103231961A (en) Dynamic monitoring management system for running of visible elevator
CN103253571A (en) Intelligent media advertisement machine of elevator dynamic monitoring system
CN103231956A (en) Multifunctional intelligent remote alarm media machine for elevator
CN104140022A (en) Advisement player and elevator running dynamic monitoring system
CN103640944B (en) A kind of Intelligent elevator fault remote automatic alarm system
CN203143851U (en) Multimedia safety monitoring system for elevator
CN104627769A (en) Safe operation internet-of-things monitoring system for elevator
CN106946110A (en) A kind of elevator malfunction failure monitoring system and method
CN103910262B (en) Control method of intelligent elevator accident remote emergency visual unit based on 4G
CN105173929B (en) Elevator data collection system and its operation method
CN203359716U (en) Multimedia safety monitoring system for elevators
CN204999459U (en) Intelligence elevator operation safety monitoring system
CN106976777A (en) One kind is used for elevator long distance fault monitoring system and its detection method
CN103310577A (en) Public fire warning indicating terminal
CN106115406A (en) Elevator safety monitoring method and device
CN104300678A (en) Intelligent comprehensive on-line monitoring system based on power equipment operation
CN113651200A (en) Elevator remote monitoring system
CN104362737A (en) Intelligent comprehensive on-line monitoring system
CN203187250U (en) Multimedia device with elevator black box function
CN105160836A (en) Social comprehensive public security active prevention system
CN202939685U (en) Office system for electric power customer service center
CN105819294B (en) A kind of elevator operation monitoring system and method based on transparent display screen
CN203338570U (en) Light screen-type cross border warning device
CN112520526A (en) Elevator early warning voice pacifying system and method based on intellectualization
CN209373407U (en) A kind of classroom management system based on Internet of Things

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20141112