CN107416625B - A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method - Google Patents
A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method Download PDFInfo
- Publication number
- CN107416625B CN107416625B CN201710383347.2A CN201710383347A CN107416625B CN 107416625 B CN107416625 B CN 107416625B CN 201710383347 A CN201710383347 A CN 201710383347A CN 107416625 B CN107416625 B CN 107416625B
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- Prior art keywords
- skip bucket
- infrared camera
- image
- personnel
- signal processor
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/06—Applications of signalling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
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- Emergency Alarm Devices (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Processing (AREA)
Abstract
The invention discloses a kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring methods, mainly include infrared camera group I, infrared camera II, signal processor and combined aural and visual alarm；Infrared camera group I is used to shoot the shaft bottom image of skip bucket bottom, infrared camera II is used to shoot the image at the top of charging appliance and skip bucket, signal processor and infrared camera group I, infrared camera II and combined aural and visual alarm communicate to connect, signal processor distinguishes the image at production wells bottom, charging appliance and skip bucket by infrared camera group I and infrared camera II, image is handled using edge detection algorithm, hoisting mechanism and personnel are distinguished using the regular and irregular profile showed in edge images, and controls the opening and closing of combined aural and visual alarm.The principle of the invention is ingenious, reliable performance, structure are simple, safe operation is low in cost, can the starting of effective monitoring skip bucket when skip bucket around personnel's situation, improve the safety of main shaft hooist.
Description
Technical field
The present invention relates to one kind to be suitable for coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method.
Background technique
Coal occupies important function in China's economic development, and vertical shaft hoisting is the leading form of coal production.Main shaft
It is the critical passage of coal mine lifting coal, security performance is directly related to the safety in production of coal mine.Due to main shaft production task
It is heavy, and have coal slime, cinder in the course of work etc. and constantly accumulate on charging appliance and skip bucket, reduce charging appliance and dustpan
The working efficiency of bucket causes skip bucket and charging appliance to be prone to failure, thus check man is needed often to clear up and overhaul loading
Equipment and skip bucket.On the other hand, during vertical shaft hoisting loads coal, coal cinder, coal slime inevitably occur for elevator
It is unrestrained.Coal breakage constantly accumulates in shaft bottom, when reaching a certain height, it may appear that coal breakage " backing " phenomenon causes elevator to send out
Raw loading and unloading accident, thus check man is needed often to clear up shaft bottom product coal.Signalman needs rapidly and accurately when starting skip bucket
Judge otherwise to be easy to cause serious casualties with the presence or absence of check man around charging appliance and skip bucket.Such as certain coal mine
On March 31, in, main shaft operative employee fail discovery and just start elevator in the check man of operation, and 1 check man is caused to fall well bore
It dies.Thus, vertical shaft hoisting skip bucket clean boot monitoring device and method are studied, for improving vertical shaft hoisting safety with important
Meaning.
Currently, the monitoring for main shaft hooist clean boot is studied, mainly in terms of Electromechanical Control, such as use low speed soft
The control strategy of starting reduces electrical impact when skip bucket starting, detects electric current and steel wire rope tension judges card tank situation extremely,
Lack and directly the monitoring of check man is studied.It is extended to personnel monitoring's research of particular space, number of patent application CN
Whether 201610430945.6 infrared pedestrian detection method, being detected in infrared image based on image block deep learning feature is had
People；Patent authorization number is the demographics detection device of ZL 201220521452.0, detects classroom using infrared sensor of the human body
Number；Number of patent application is the personnel safety monitoring system of CN 201410662745.4, and one is installed in specific monitoring region
Network transmission device, several labels and locating base station, track the position of personnel, complete the prison of elevator service personnel
Control.
It is monitored for coal mine main shaft vertical shaft hoisting skip bucket clean boot and is primarily present following problems: first, in lighting condition
It is extremely limited, pit shaft is narrow, composition component is more, in complicated mine, signalman observes by the naked eye or regular camera
It is difficult to judge around skip bucket with the presence or absence of check man, and working efficiency is low；Second, using picture depth study and classifier into
It is too small for the data set scale of personnel's image of the narrow complex space of pit shaft when row infrared identification, recognition efficiency and reliability
It is low, it is easy to appear erroneous judgement；Third carries out personnel positioning monitoring by tag sensor network, needs to install on skip bucket and miner
Network transmission device and label bring biggish installation cost and operation burden, do not have practicability.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides that a kind of structure is simple, it is reliable to have both
The coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method of property and convenience.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device includes mainly infrared camera group I, infrared takes the photograph
As head II, signal processor and combined aural and visual alarm；Two cameras of infrared camera group I are positioned opposite, are separately positioned on master
Well derrick lower part is into coal side and non-into coal side, and two cameras settings are in sustained height and slightly below skip bucket stop, and two
The camera lens of a camera is towards skip bucket bottom, for shooting the shaft bottom image of skip bucket bottom；Infrared camera II is arranged in main shaft
Derrick is non-into coal side and slightly above load port, the camera lens of camera are loaded towards charging appliance and skip bucket side for shooting
Image at the top of equipment and skip bucket；Signal processor is arranged in main shaft hoist house, with infrared camera group I, infrared camera II
It is communicated to connect with combined aural and visual alarm, signal processor distinguishes production wells bottom, dress by infrared camera group I and infrared camera II
The image for carrying equipment and skip bucket, handles image using edge detection algorithm, utilizes the rule showed in edge images
Hoisting mechanism and personnel are distinguished with irregular contour, and controls the opening and closing of combined aural and visual alarm.
Specifically, be required to install thermal imaging detector additional before the camera lens of the infrared camera group I, infrared camera II,
To obtain the bulk temperature distribution of measured target.
Specifically, the infrared camera group I and the camera lens visual angle angle [alpha] of infrared camera II are 50 °~90 °, it is ensured that
Infrared camera group I and infrared camera II can take the image of shaft bottom, charging appliance and skip bucket.
A kind of monitoring method based on above-mentioned coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device, including walk as follows
It is rapid:
(a) two cameras of infrared camera group I are positioned opposite, main well headframe lower part is separately mounted into coal side
With non-into coal side, two cameras settings are in sustained height and slightly below skip bucket stop, the camera lens direction of two cameras
Skip bucket bottom, for shooting the shaft bottom image of skip bucket bottom；By infrared camera II be mounted on main well headframe it is non-into coal side and
Slightly above load port, the camera lens of camera is towards charging appliance and skip bucket side, for shooting at the top of charging appliance and skip bucket
Image；Signal processor is mounted on main shaft hoist house, it is logical with infrared camera group I, infrared camera II and combined aural and visual alarm
Letter connection；
(b) when skip bucket needs to start, infrared camera group I and infrared camera II distinguish production wells bottom, charging appliance
With the image of skip bucket, it then will affect and be sent to signal processor, signal processor decoding IR image, and calculated using canny
Sub- detection image edge obtains the edge images of skip bucket bottom and top；
(c) signal processor in the edge images of skip bucket bottom and top hoisting mechanism and personnel identify: base
In skip bucket, main well headframe and charging appliance is predominantly smooth vertical and horizontal, corner angle are distinct mechanical structure, will be detected in edge images
The regular contour including line segment and curve be determined as hoisting mechanism；It is irregular curve based on human body contour outline, by edge
The irregular contour detected in image is determined as personnel；Meanwhile the infrared temperature difference based on personnel and hoisting mechanism, it improves
The reliability of identification；
(d) according to recognition result, judge whether there is personnel around charging appliance and skip bucket, and control acousto-optic report
The opening and closing of alert device.
Specifically, in the step (d), according to recognition result, to whether there is around charging appliance and skip bucket personnel into
Row judgement, detailed process is as follows:
1. when there are when irregular contour in the image that infrared camera group I acquires, then it represents that there is personnel clear at this time
Shaft bottom product coal is managed, signal processor triggers the bright orange lamp of combined aural and visual alarm and prompts skip bucket bottom someone person, No starting skip bucket；
2. when there are when irregular contour in the image that infrared camera II acquires, then it represents that have personnel in skip bucket at this time or
Maintenance or prune job are engaged at person's charging appliance, signal processor triggering combined aural and visual alarm, which sends out a warning, to be prompted to have at the top of skip bucket
Personnel, No starting skip bucket；
3. when there was only regular contour in the image that infrared camera group I and infrared camera II acquire, then it represents that this
When skip bucket bottom and top all there is no personnel's operation, the prompt that gives a green light of signal processor triggering combined aural and visual alarm can normally start
Skip bucket.
The utility model has the advantages that coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device provided by the invention and monitoring method,
Using infrared photography, solve the problems, such as that vertical shaft hoist skip bucket ambient illumination is insufficient；Based on edge detection algorithm to image into
Row processing is distinguished hoisting mechanism part and personnel using the regular and irregular profile showed in edge images, is had higher
It identifies accuracy, and does not need to use the training of a large amount of data set as deep learning and classifier；Penetrating based on infrared photography
Property, personnel are distinguished using profile difference, it is only necessary to which a part that personnel's body is taken in image can identify personnel, will greatly
The reliability that personnel are identified in complicated device structure is improved, avoiding personnel from being at least partially obscured causes to judge by accident.The principle of the invention
Ingenious, reliable performance, structure are simple, safe operation is low in cost, can the starting of effective monitoring skip bucket when skip bucket around personnel
Situation, thus guarantee skip bucket can clean boot, ensure that check man can safety work, improve the safety of main shaft hooist
Property, economic benefit is obvious.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is operation schematic diagram in check man shaft bottom of the invention；
Fig. 3 is check man's skip bucket of the invention and charging appliance operation schematic diagram；
In figure: 1- signal processor, 2- combined aural and visual alarm, 3- main well headframe, 4- wirerope, 5- infrared camera group II,
6- charging appliance, 7- skip bucket, 8- infrared camera group I, 9- personnel.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
It is as shown in Figure 1, Figure 2 and Figure 3 a kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device, mainly includes
Infrared camera group I 8, infrared camera II 5, signal processor 1 and combined aural and visual alarm 2；Two of infrared camera group I 8 take the photograph
As positioned opposite, 3 lower part of main well headframe is separately positioned on into coal side and non-into coal side, two cameras are arranged same
Height and slightly below skip bucket stop, the camera lens of two cameras is towards 7 bottom of skip bucket, for shooting the shaft bottom of 7 bottom of skip bucket
Image；The setting of infrared camera II 5 is non-into coal side and slightly above load port in main well headframe 3, and the camera lens of camera is towards dress
Equipment 6 and 7 side of skip bucket are carried, for shooting the image at 7 top of charging appliance 6 and skip bucket；The setting of signal processor 1 is twisted in main shaft
Garage is communicated to connect with infrared camera group I 8, infrared camera II 5 and combined aural and visual alarm 2, and signal processor 1 passes through infrared
Camera group I 8 and infrared camera II 5 distinguish the image at production wells bottom, charging appliance 6 and skip bucket 7, using edge detection algorithm
Image is handled, distinguishes hoisting mechanism and personnel 9 using the regular and irregular profile showed in edge images, and control
The opening and closing of combined aural and visual alarm 2 processed.
The infrared camera group I 8, infrared camera II 5 camera lens before be required to install additional thermal imaging detector, to obtain
Obtain the bulk temperature distribution of measured target；The camera lens visual angle angle [alpha] of the infrared camera group I 8 and infrared camera II 5
It is 50 °~90 °, it is ensured that infrared camera group I 8 and infrared camera II 5 can take shaft bottom, charging appliance 6 and skip bucket 7
Image.
The monitoring method of above-mentioned coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device, specifically comprises the following steps:
(a) two cameras of infrared camera group I 8 are positioned opposite, 3 lower part of main well headframe is separately mounted into coal one
Side and non-into coal side, two cameras settings are in sustained height and slightly below skip bucket stop, the camera lens court of two cameras
To 7 bottom of skip bucket, for shooting the shaft bottom image of 7 bottom of skip bucket；It is non-into coal that infrared camera II 5 is mounted on main well headframe 3
Side and slightly above load port, the camera lens of camera is towards 7 side of charging appliance 6 and skip bucket, for shooting charging appliance 6 and dustpan
The image at 7 top of bucket；Signal processor 1 is mounted on main shaft hoist house, with infrared camera group I 8, infrared camera II 5 and
Combined aural and visual alarm 2 communicates to connect；
(b) when skip bucket 7 needs to start, production wells bottom, loading are set respectively for infrared camera group I 8 and infrared camera II 5
For 6 and the image of skip bucket 7, it then will affect and be sent to signal processor 1,1 decoding IR image of signal processor, and utilize
Canny operator detection image edge obtains the edge images of 7 bottom and top of skip bucket；
(c) signal processor 1 in the edge images of 7 bottom and top of skip bucket hoisting mechanism and personnel 9 identify:
It, will be in edge images based on skip bucket 7, main well headframe 3 and charging appliance 6 is predominantly smooth vertical and horizontal, corner angle are distinct mechanical structure
The regular contour including line segment and curve detected is determined as hoisting mechanism；It is irregular curve based on human body contour outline,
The irregular contour detected in edge images is determined as personnel 9；Meanwhile the infrared temperature based on personnel 9 Yu hoisting mechanism
Difference improves the reliability of identification；
(d) according to recognition result, judge whether there is personnel 9 around charging appliance 6 and skip bucket 7, detailed process
It is as follows:
1. when there are when irregular contour in the image that infrared camera group I 8 acquires, then it represents that having personnel 9 at this time
Shaft bottom product coal is cleared up, signal processor 1, which triggers the bright orange lamp of combined aural and visual alarm 2 prompt 7 bottom of skip bucket, personnel 9, No starting dustpan
Bucket 7；
2. when there are when irregular contour in the image that infrared camera II 5 acquires, then it represents that there is personnel 9 in skip bucket at this time
7 or charging appliance 6 at be engaged in maintenance or prune job, signal processor 1, which triggers combined aural and visual alarm 2 and sends out a warning, prompts skip bucket
Personnel 9, No starting skip bucket 7 are arranged at 7 tops；
3. when there was only regular contour in the image that infrared camera group I 8 and infrared camera II 5 acquire, then it represents that
For 7 bottom and top of skip bucket all without 9 operation of personnel, the triggering combined aural and visual alarm 2 of signal processor 1 gives a green light prompt can be just at this time
Often starting skip bucket 7.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device, it is characterised in that: mainly include infrared camera
I (8) of group, infrared camera II (5), signal processor (1) and combined aural and visual alarm (2)；Two of infrared camera group I (8) take the photograph
As positioned opposite, main well headframe (3) lower part is separately positioned on into coal side and non-into coal side, two cameras are arranged same
One highly and lower than skip bucket stop, and the camera lens of two cameras is towards skip bucket (7) bottom, for shooting skip bucket (7) bottom
Shaft bottom image；Infrared camera II (5) setting is non-into coal side and higher than load port, the camera lens of camera in main well headframe (3)
Towards charging appliance (6) and skip bucket (7) side, for shooting the image at the top of charging appliance (6) and skip bucket (7)；Signal processing
Device (1) is arranged in main shaft hoist house, with infrared camera group I (8), infrared camera II (5) and combined aural and visual alarm (2) communication link
It connects, signal processor (1) passes through infrared camera group I (8) and infrared camera II (5) difference production wells bottom, charging appliance (6)
With the image of skip bucket (7), image is handled using edge detection algorithm, using the rule showed in edge images and not
Regular contour distinguishes hoisting mechanism and personnel (9), and controls the opening and closing of combined aural and visual alarm (2).
2. coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device according to claim 1, it is characterised in that: described
Infrared camera group I (8), infrared camera II (5) camera lens before be required to install additional thermal imaging detector.
3. coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device according to claim 1, it is characterised in that: described
Infrared camera group I (8) and the camera lens visual angle angle [alpha] of infrared camera II (5) are 50 °~90 °, it is ensured that infrared camera group I
(8) and infrared camera II (5) can take the image in shaft bottom, charging appliance (6) and skip bucket (7).
4. a kind of monitoring based on coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device described in claim 1,2 or 3
Method, characterized by the following steps:
(a) two cameras of infrared camera group I (8) are positioned opposite, main well headframe (3) lower part is separately mounted into coal one
Side and non-into coal side, two cameras settings are in sustained height and are lower than skip bucket stop, the camera lens direction of two cameras
Skip bucket (7) bottom, for shooting the shaft bottom image of skip bucket (7) bottom；Infrared camera II (5) is mounted on main well headframe (3)
Non- into coal side and to be higher than load port, the camera lens of camera is towards charging appliance (6) and skip bucket (7) side, for shooting loading
Image at the top of equipment (6) and skip bucket (7)；Signal processor (1) is mounted on main shaft hoist house, with infrared camera group I
(8), infrared camera II (5) and combined aural and visual alarm (2) communication connection；
(b) when skip bucket (7) needs to start, infrared camera group I (8) and infrared camera II (5) difference production wells bottom are loaded
The image of equipment (6) and skip bucket (7) then will affect and be sent to signal processor (1), signal processor (1) decoding IR shadow
Picture, and canny operator detection image edge is utilized, obtain the edge images of skip bucket (7) bottom and top；
(c) signal processor (1) in the edge images of skip bucket (7) bottom and top hoisting mechanism and personnel (9) know
It is other: skip bucket (7), the mechanical structure that main well headframe (3) and charging appliance (6) are predominantly smooth vertical and horizontal, corner angle are distinct to be based on, by side
The regular contour including line segment and curve detected in edge image is determined as hoisting mechanism；It is not advise based on human body contour outline
The irregular contour detected in edge images is determined as personnel (9) by then curve；Meanwhile being based on personnel (9) and hoisting mechanism
Infrared temperature difference, improve the reliability of identification；
(d) according to recognition result, judged with the presence or absence of personnel (9) around charging appliance (6) and skip bucket (7), and controlled
The opening and closing of combined aural and visual alarm (2).
5. monitoring method according to claim 4, it is characterised in that: in the step (d), according to recognition result, to dress
It carries and judges that detailed process is as follows with the presence or absence of personnel (9) around equipment (6) and skip bucket (7):
1. when, there are when irregular contour, signal processor (1) triggers acousto-optic report in the image that infrared camera group I (8) acquires
Alert device (2) bright orange lamp prompt skip bucket (7) bottom has personnel (9), No starting skip bucket (7)；
2. when, there are when irregular contour, signal processor (1) triggers sound-light alarm in the image that infrared camera II (5) acquires
Device (2), which sends out a warning, to be prompted to have personnel (9) at the top of skip bucket (7), No starting skip bucket (7)；
3. when there was only regular contour in the image that infrared camera group I (8) and infrared camera II (5) acquire, at signal
Reason device (1) triggering combined aural and visual alarm (2) prompt that gives a green light can normally start skip bucket (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383347.2A CN107416625B (en) | 2017-05-26 | 2017-05-26 | A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method |
| PCT/CN2017/089143 WO2018214197A1 (en) | 2017-05-26 | 2017-06-20 | Monitoring apparatus and monitoring method for safe launch of coal mine main shaft vertical shaft hoisting skip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383347.2A CN107416625B (en) | 2017-05-26 | 2017-05-26 | A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107416625A CN107416625A (en) | 2017-12-01 |
| CN107416625B true CN107416625B (en) | 2019-03-29 |
Family
ID=60428296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710383347.2A Expired - Fee Related CN107416625B (en) | 2017-05-26 | 2017-05-26 | A kind of coal mine main shaft vertical shaft hoisting skip bucket clean boot monitoring device and monitoring method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107416625B (en) |
| WO (1) | WO2018214197A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109614946B (en) * | 2018-12-18 | 2023-10-27 | 华能国际电力股份有限公司大连电厂 | Personnel safety protection method and system for coal conveying system of thermal power plant based on image intelligent recognition technology |
| CN114673505A (en) * | 2022-02-18 | 2022-06-28 | 江苏泰诺矿用设备有限公司 | Impact-proof shaft monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006111448A (en) * | 2004-10-13 | 2006-04-27 | Inventio Ag | Lift installation with information display on shaft door |
| CN201162545Y (en) * | 2008-01-16 | 2008-12-10 | 刘西怀 | Mine safety monitoring system |
| CN102023617A (en) * | 2009-09-17 | 2011-04-20 | 上海可鲁系统软件有限公司 | Coal mine safety information monitoring system based on industrial internet |
| CN103287939A (en) * | 2012-02-24 | 2013-09-11 | 东芝电梯株式会社 | Apparatus for measuring number of people in elevator, elevator having the apparatus, and elevator system including a plurality of elevators with the apparatus |
| CN105366472A (en) * | 2015-11-26 | 2016-03-02 | 上海大屯能源股份有限公司江苏分公司 | Device for preventing skip bucket from repeatedly coaling |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08127480A (en) * | 1994-11-01 | 1996-05-21 | Hitachi Building Syst Eng & Service Co Ltd | Control device for elevator |
| EP2214998B1 (en) * | 2007-12-03 | 2016-05-18 | Otis Elevator Company | Passive detection of persons in elevator hoistway |
| JP2013220895A (en) * | 2012-04-17 | 2013-10-28 | Toshiba Elevator Co Ltd | Operation control system for elevator |
| CN204198150U (en) * | 2014-09-01 | 2015-03-11 | 菏泽学院 | A kind of infrared monitoring mine hoist |
-
2017
- 2017-05-26 CN CN201710383347.2A patent/CN107416625B/en not_active Expired - Fee Related
- 2017-06-20 WO PCT/CN2017/089143 patent/WO2018214197A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006111448A (en) * | 2004-10-13 | 2006-04-27 | Inventio Ag | Lift installation with information display on shaft door |
| CN201162545Y (en) * | 2008-01-16 | 2008-12-10 | 刘西怀 | Mine safety monitoring system |
| CN102023617A (en) * | 2009-09-17 | 2011-04-20 | 上海可鲁系统软件有限公司 | Coal mine safety information monitoring system based on industrial internet |
| CN103287939A (en) * | 2012-02-24 | 2013-09-11 | 东芝电梯株式会社 | Apparatus for measuring number of people in elevator, elevator having the apparatus, and elevator system including a plurality of elevators with the apparatus |
| CN105366472A (en) * | 2015-11-26 | 2016-03-02 | 上海大屯能源股份有限公司江苏分公司 | Device for preventing skip bucket from repeatedly coaling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107416625A (en) | 2017-12-01 |
| WO2018214197A1 (en) | 2018-11-29 |
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Address after: 221116 Research Institute of China University of Mining and Technology,, Jiangsu Applicant after: CHINA University OF MINING AND TECHNOLOGY Address before: 221116 Xuzhou University Road,, Jiangsu, China University of Mining and Technology Applicant before: CHINA University OF MINING AND TECHNOLOGY |
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Granted publication date: 20190329 |