CN108163686A - A kind of safety control and the elevator using the device - Google Patents
A kind of safety control and the elevator using the device Download PDFInfo
- Publication number
- CN108163686A CN108163686A CN201711458453.9A CN201711458453A CN108163686A CN 108163686 A CN108163686 A CN 108163686A CN 201711458453 A CN201711458453 A CN 201711458453A CN 108163686 A CN108163686 A CN 108163686A
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- CN
- China
- Prior art keywords
- image
- transmitter
- elevator
- door
- visual field
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a kind of safety controls for elevator door open and close, including object detecting device and I/O interfaces, object detecting device includes image capture device, radio receiver-transmitter, and radio receiver-transmitter includes radio frequency transmitter signal and receiving sensor associated with it；Safety control further includes：Processor, to receive information and be pocessed；Memory, information that treated for receiving and storing processor store the primary image before a succession of present apparatus use in memory；Main control unit, for analyzing information respectively and judging whether there are obstacles or security risk in a visual field.Compared with prior art, the present invention is detected simultaneously using image capture device and radio receiver-transmitter, and the two is complementary to one another, and can avoid two kinds of erroneous judgements, is reduced the open and close of elevator door to the injury of human body and is ensured the normal operation of elevator door.
Description
Technical field
A kind of elevator the present invention relates to safety control and using the device.
Background technology
Occur to be clamped by elevator door into and out of the passenger of elevator or the cabin luggage of passenger when elevator door is closed in order to prevent
Situation, safety control is installed in the end of elevator door, for example, detected using camera or using infrared ray into
Row detection when having object between camera or infrared detector discovery elevator door, then can control elevator door to open, prevent to people
The hurt of body and substance.
But electric elevator door safety device device is matched without one or more sets assistors when there was only a kind of detecting devices
If be all defective.Each detector, more or less to the peace of terraced door all with 2 kinds of erroneous judgements.Class A detects accessible
Object, but elevator door control cabinet can be instructed to make a response.Class B is exactly detector detection less than barrier or detects obstacle
Object but any reaction is not all made, so that causing material damage or human-body safety hidden danger.
It is single with digital camera or any applicable image capture device has the erroneous judgement of Class A, such as to shadow, mirror,
The reflective panel refractile body of elevator car inner wall.For Class B the transparent and unreflecting object of height for example glass, offset plate, acrylic and
Film, the various ornaments with Ms, opaque and color and quality are with object similar in scanning area, plaster, paint, dust etc.
All it is the object of Class B erroneous judgement.Also keep the clean also most important to the quality of image imaged of camera eyeglass.
It is single to do electric elevator door safety device with light source（Such as infrared light, LED, laser）Similarly there is the shortcomings that Class A.Such as
External light source will receive interference when being close with the wave band selected by terraced door safety device, human body and mechanical temperature can also be done
Infrared ray is disturbed, LED, mobile phone flashlight on kids toys etc. can all cause the disadvantage of Class A usually.
Single the problem of Class B is just had with acoustic systems, sound wave are often drawn by a variety of objects without reflecting, such as the skin of people
Skin.
Therefore, current elevator gate safety control device cannot avoid above-mentioned 2 kinds of described erroneous judgements completely, it is possible to right
Human body and substance into and out of elevator cause hurt.
Invention content
The present invention provides a kind of safety device for solving above-mentioned two classes erroneous judgement, reduces for deficiency of the prior art
The Push And Release of elevator door causes the hurt to human body or substance.
In order to solve the above technical problems, the present invention is addressed by following technical proposals：One kind is used for elevator door open and close
Safety control, including object detecting device and I/O interfaces, the object detecting device include for sweep gate visual field with
Obtain the image capture device of image, it is characterised in that：
The object detecting device is further included makees the transceiving of detection and ranging dress based on sending and receiving radio wave principle
It puts, the radio receiver-transmitter includes radio frequency transmitter signal and receiving sensor associated with it, for scanning elevator door
Visual field, and constantly measure the reflective distance of radio wave；
The safety control further includes：Processor is connected with described image grabber and the radio receiver-transmitter, uses
To receive the information of described image grabber and the radio receiver-transmitter and be pocessed；
Memory is connect with the processor signal, treated for receiving and storing the processor information, the storage
The primary image before a succession of present apparatus use is stored in device；
Main control unit, for analyzing the information from described image grabber and the radio receiver-transmitter in memory respectively
And judge whether there are obstacles or security risk in a visual field, if judging that there are barrier or safety are hidden according to any information
Suffer from, then sending instruction to elevator control cabinet stays open or reopen to make opposite reaction or directly result in elevator door.
The present invention is detected simultaneously using image capture device and radio receiver-transmitter, due to radio receiver-transmitter energy
It is enough to differentiate entity and empty body well, and transparency material does not also influence radio receiver-transmitter, and therefore, the two is mutual
Supplement, radio receiver-transmitter are existing to shadow, mirror, ladder when can be good at solving that image capture device is individually used to detect
The Class A erroneous judgement of the reflective panel refractile body of compartment inner wall and the Class B erroneous judgement as caused by transparent substance etc..So that the present invention
Safety control can avoid described above two kinds from judging by accident, reduce the open and close of elevator door to the injury of human body and ensure electricity
The normal operation of terraced door.
Preferably, above-mentioned processor is at least one kind in video/radio wave processor and data processor.
In order to obtain superior technique effect, further technical measures further include：Above-mentioned image capture device is using adjustable
The wide camera lens of angle, angle of regulation range are 100 degree to 180 degree.
Preferably, above-mentioned image capture device, which is electricity consumption, puts coupled apparatus or CMOS main parts are formed.
Preferably, above-mentioned image capture device is pinhole camera or camera gun.
Preferably, above-mentioned main control unit by by the image information of the newest capture of described image grabber with capturing before
Image information or the primary image that prestores be compared, if one or more applicable image informations relatively it is lower exist it is poor
It is different, then judge that there are barrier or security risks in a visual field；Meanwhile the main control unit is remembered after frequently image is obtained
The consistent image of preservative feature, and the image is being judged there is no the image is locked automatically after security risk, if one or more
Applicable image information relatively has differences down the image locked with this, then judges that there are barrier or peaces in a visual field
Full hidden danger.
Preferably, above-mentioned main control unit is after the subject image is obtained for the first time, the feature of the memory storage object, it
Afterwards when the object occurs again, this control device can identify the object, and the memory for fulfiling first time judges behavior.
Preferably, the upper main control unit by by the newest radio-wave reflection distance detected with detecting before
Radio-wave reflection distance be compared, if there are gaps between the two, judge that there are barrier or safety in a visual field
Hidden danger；
Meanwhile the consistent object of reflective distance is stored after frequent detection range, and there is no after security risk judging the object
Automatically the object is locked, if relatively having differences down for the distance of the one or more object object locked with this, judges
There are barrier or security risks in door visual field.
Further, safety control further includes data outputting module and caution signal output module, the data
Output module and caution signal output module are connected with the I/O interfaces.
As the one of which application of above-mentioned safety control, device can be connected with network, with remote monitoring door
Visual field and long-distance service and this control device that communicates.
As the one of which application of above-mentioned safety control, the present invention additionally provides a kind of using above-mentioned safety simultaneously
The elevator of control device, including car, gate, elevator controlling button gates component and elevator control cabinet, it is characterised in that：Institute
It states the main control unit of safety control and described instruction is sent to the elevator control cabinet, described in elevator control cabinet control
Gate the on or off that component realizes the elevator door.
Preferably, described image grabber and the radio receiver-transmitter are set on the car door top of the car
With above car door volume and in car and any any position for being adapted to fit this device and reaching this apparatus function of elevator.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is received simultaneously using image capture device and radio
Transmitting apparatus is detected, since radio receiver-transmitter can be good at differentiating entity and empty body, and transparency material is for nothing
Line electricity R-T unit does not also influence, and therefore, the two is complementary to one another, and radio receiver-transmitter can be good at solving individually using
Image capture device detect when it is existing to shadow, mirror, elevator car inner wall reflective panel refractile body Class A erroneous judgement and by saturating
Class B caused by bright object etc. is judged by accident.Enable the safety control of the present invention that described above two kinds is avoided to judge by accident, subtract
The Push And Release of few elevator door is to the injury of human body and ensures the normal operation of elevator door.
Description of the drawings
Fig. 1 is lift car internal structure chart.
Fig. 2 is elevator door visual field schematic diagram.
Fig. 3 is elevator structure schematic diagram.
Fig. 4 is operation principle schematic diagram of the present invention.
Specific embodiment
The present invention is described in further detail With reference to embodiment：
Embodiment 1
A kind of safety control for elevator door, including object detecting device and I/O interfaces, the object detecting device packet
It includes for sweep gate visual field to obtain the image capture device 1 of image, it is characterised in that：
The object detecting device further includes the radio receiver-transmitter that detection and ranging are done based on sending and receiving radio wave principle
2, the radio receiver-transmitter 2 includes radio frequency transmitter signal and receiving sensor associated with it, for scanning elevator door
Visual field 9, and constantly measure the reflective distance of radio wave；
The safety control further includes：
Processor 3 is connected with described image grabber 1 and the radio receiver-transmitter 2, to receive described image grabber
1 and the radio receiver-transmitter 2 information and be pocessed；
Memory 4 is connect with 3 signal of processor, information that treated for receiving and storing the processor 3, described
The primary image before a succession of present apparatus use is stored in memory 4；
Main control unit 5, for what is analyzed respectively in memory from described image grabber 1 and the radio receiver-transmitter 2
Information simultaneously judges whether there are obstacles or security risk in a visual field, if judging that there are barrier or safety according to any information
Hidden danger then sends instruction to elevator control cabinet and stays open or beat again to make opposite reaction or directly result in elevator door
It opens.
The processor 3 is at least one kind in video/radio wave processor 31 and data processor 32.
Described image grabber 1 uses the wide camera lens of angle adjustable, and angle of regulation range is 100 degree to 180 degree.The figure
As grabber 1 is that coupled apparatus is put in electricity consumption or CMOS main parts are formed.Certainly, described image grabber 1 can also be shone for pin hole
Camera or camera gun.
The main control unit 5 is by by the image information of 1 newest capture of described image grabber and the image that before captures
Information or the primary image to prestore are compared, if one or more applicable image informations are relatively having differences down, are sentenced
There are barrier or security risks in disconnected door visual field；Meanwhile the main control unit 5, after frequently image is obtained, memory storage is special
Consistent image is levied, and the image is locked automatically after judging that security risk is not present in the image, if what one or more was applicable in
Image information relatively has differences down the image locked with this, then judges that there are barrier or safety are hidden in a visual field
Suffer from.
Meanwhile the main control unit 5 is after the subject image is obtained for the first time, the feature of the memory storage object, later
When the object occurs again, this control device can identify the object, and the memory for fulfiling first time judges behavior.
The main control unit 5 is by by the newest radio-wave reflection distance detected and the radio wave that detects before
Reflective distance is compared, if there are gaps between the two, judges that there are barrier or security risks in a visual field；
Meanwhile the consistent object of reflective distance is stored after frequent detection range, and there is no after security risk judging the object
Automatically the object is locked, if relatively having differences down for the distance of the one or more object object locked with this, judges
There are barrier or security risks in door visual field.
Further include data outputting module 6 and caution signal output module 7, the data outputting module 6 and caution signal
Output module 7 is connected with the I/O interfaces, and output module 6 is remote monitoring, long-distance service, and the network of telecommunication is defeated
Outlet, after the predetermined some time, if elevator door is also prevented from closing, control device can send out alarm bell alarm, until elevator
Door is closed.
Embodiment 2
A kind of elevator using above-mentioned safety control, including car 8, gate 85, hall door 81, elevator controlling button 82, door
Control component 83 and elevator control cabinet 84, it is characterised in that：The main control unit 5 of the safety control sends out described instruction
Send to the elevator control cabinet 84, elevator control cabinet 84 controls the gate component to realize the hall door 81, gate 85 open or
It closes.
Described image grabber 1 and the radio receiver-transmitter 2 are set on the car door top of the car 8 and car
Above door volume and in car and any any position for being adapted to fit this device and reaching this apparatus function of elevator.
Object detecting device constantly scans and detects the presence for having clear, such as image capture device in terraced door visual field
1 and the radio receiver-transmitter 2 in any one discovery have different, then the present apparatus can send a signal to the control in elevator control cabinet
System processed does invalidation with the button to elevator "on" and "off".
In addition to the elevator door disclosed in above-described embodiment, safety control device may be also used in such as floor fortune each in restaurant
The dumbwaiter of defeated food, escalator, movable sidewalk, wheel chair lift etc..
Claims (12)
1. a kind of safety control, including object detecting device and I/O interfaces, the object detecting device includes scanning
Door visual field（9）To obtain the image capture device of image（1）, it is characterised in that：
The object detecting device further includes the radio receiver-transmitter that detection and ranging are done based on sending and receiving radio wave principle
（2）, the radio receiver-transmitter（2）Including radio frequency transmitter signal and receiving sensor associated with it, for scanning electricity
Terraced door visual field（9）, and constantly measure the reflective distance of radio wave；
The safety control further includes：
Processor（3）, with described image grabber（1）And the radio receiver-transmitter（2）It is connected, to receive described image
Grabber（1）With the radio receiver-transmitter（2）Information and be pocessed；
Memory（4）, with the processor（3）Signal connects, for receiving and storing the processor（3）Treated believes
Breath, the memory（4）In store the primary image before a succession of present apparatus use；
Main control unit（5）, described image grabber is come from memory for analyzing respectively（1）With the radio receiver-transmitter
（2）Information and judge whether there are obstacles or security risk in a visual field, if according to any information judge there are barriers
Or security risk, then instruction is sent out so that door to be prevented to shut or reopen door.
2. a kind of safety control according to claim 1, it is characterised in that：The processor 3 is at least video/nothing
Line electric wave processor（31）And data processor（32）In one kind.
3. a kind of safety control according to claim 2, it is characterised in that：Described image grabber（1）Using can
The wide camera lens of hue angle, angle of regulation range are 100 degree to 180 degree.
4. a kind of safety control according to claim 3, it is characterised in that：Described image grabber（1）It is electricity consumption
It puts coupled apparatus or CMOS main parts is formed.
5. a kind of safety control according to claim 3, it is characterised in that：Described image grabber（1）For pin hole
Camera or camera gun.
6. a kind of safety control according to claim 1, it is characterised in that：The main control unit（5）By by institute
State image capture device（1）The image information of newest capture is compared with the image information captured before or the primary image to prestore
Compared with if one or more applicable image informations is relatively having differences down, judging that there are barrier or safety in a visual field
Hidden danger；
Meanwhile the main control unit（5）After frequently image is obtained, the consistent image of memory storage feature, and judging the figure
As locking the image automatically after security risk is not present, if one or more applicable image informations are in the image locked with this
Relatively have differences down, then judge that there are barrier or security risks in a visual field.
7. simultaneously, the main control unit（5）After the subject image is obtained for the first time, the feature of the memory storage object, later
When the object occurs again, this control device can identify the object, and the memory for fulfiling first time judges behavior.
8. a kind of safety control according to claim 1, it is characterised in that：The main control unit（5）By will most
The radio-wave reflection distance newly detected is compared with the radio-wave reflection distance detected before, if depositing between the two
In gap, then judge that there are barrier or security risks in a visual field；
Meanwhile the consistent object of reflective distance is stored after frequent detection range, and there is no after security risk judging the object
Automatically the object is locked, if relatively having differences down for the distance of the one or more object object locked with this, judges
There are barrier or security risks in door visual field.
9. a kind of safety control according to any claim in claim 1 to 7, it is characterised in that：It further includes
Data outputting module（6）And caution signal output module（7）, the data outputting module（6）With caution signal output module
（7）It is connected with the I/O interfaces, the output module（6）It is remote monitoring, long-distance service, the network of telecommunication is defeated
Outlet.
10. a kind of elevator using safety control as claimed in claim 8, including car（8）, gate（85）, hall door
（81）, elevator controlling button（82）, gate component（83）And elevator control cabinet（84）, it is characterised in that：The security control dress
The main control unit put（5）Described instruction is sent to the elevator control cabinet（84）, elevator control cabinet（84）Described in control
It gates component and realizes the hall door（81）, gate（85）On or off.
11. elevator according to claim 9, it is characterised in that：Described image grabber（1）And the radio receiver-transmitter
（2）It is set to the car（8）Car door top on and car door volume above and car in and elevator is any is adapted to fit this
Device and any position for reaching this apparatus function.
12. a kind of safety control according to claim 1, it is characterised in that：Device can be connected with network, with
Remote monitoring door visual field and long-distance service and this control device that communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458453.9A CN108163686A (en) | 2017-12-28 | 2017-12-28 | A kind of safety control and the elevator using the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458453.9A CN108163686A (en) | 2017-12-28 | 2017-12-28 | A kind of safety control and the elevator using the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108163686A true CN108163686A (en) | 2018-06-15 |
Family
ID=62518956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711458453.9A Pending CN108163686A (en) | 2017-12-28 | 2017-12-28 | A kind of safety control and the elevator using the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108163686A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137774A (en) * | 2019-12-31 | 2020-05-12 | 滁州职业技术学院 | Automatic door with anti-pinch function |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002308552A (en) * | 2001-04-16 | 2002-10-23 | Hitachi Ltd | Door opening and closing controller |
| JP2008056469A (en) * | 2006-09-01 | 2008-03-13 | Toshiba Elevator Co Ltd | Elevator door safety device |
| CN101585478A (en) * | 2008-05-23 | 2009-11-25 | 株式会社日立制作所 | Safety device and security control method for elevator door |
| CN101723226A (en) * | 2009-12-24 | 2010-06-09 | 杭州优迈科技有限公司 | System and method of machine vision three-dimensional detection elevator light curtain |
| JP2012020823A (en) * | 2010-07-13 | 2012-02-02 | Toshiba Elevator Co Ltd | Safety device of elevator door |
| TW201313597A (en) * | 2011-09-27 | 2013-04-01 | Hon Hai Prec Ind Co Ltd | Safe control device and method for lift |
| CN103010883A (en) * | 2011-09-28 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Elevator safety control device and working method thereof |
| CN103373660A (en) * | 2013-07-16 | 2013-10-30 | 深圳先进技术研究院 | Elevator anti-pinch device |
| CN104340826A (en) * | 2014-10-28 | 2015-02-11 | 无锡港湾网络科技有限公司 | Anti-pinch control method of elevator door |
| CN104847211A (en) * | 2015-03-24 | 2015-08-19 | 江苏科技大学 | Auxiliary system for safety of platform safety doors and train door sections and implementation method thereof |
| GB201612755D0 (en) * | 2016-07-22 | 2016-09-07 | Airdri Ltd | Sliding door monitoring system and method |
| CN206359100U (en) * | 2016-12-30 | 2017-07-28 | 沈阳聚德视频技术有限公司 | A kind of elevator vision light curtain based on ARM |
| CN208454237U (en) * | 2017-12-28 | 2019-02-01 | 曾金 | A kind of safety control and the elevator using the device |
-
2017
- 2017-12-28 CN CN201711458453.9A patent/CN108163686A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002308552A (en) * | 2001-04-16 | 2002-10-23 | Hitachi Ltd | Door opening and closing controller |
| JP2008056469A (en) * | 2006-09-01 | 2008-03-13 | Toshiba Elevator Co Ltd | Elevator door safety device |
| CN101585478A (en) * | 2008-05-23 | 2009-11-25 | 株式会社日立制作所 | Safety device and security control method for elevator door |
| CN101723226A (en) * | 2009-12-24 | 2010-06-09 | 杭州优迈科技有限公司 | System and method of machine vision three-dimensional detection elevator light curtain |
| JP2012020823A (en) * | 2010-07-13 | 2012-02-02 | Toshiba Elevator Co Ltd | Safety device of elevator door |
| TW201313597A (en) * | 2011-09-27 | 2013-04-01 | Hon Hai Prec Ind Co Ltd | Safe control device and method for lift |
| CN103010883A (en) * | 2011-09-28 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Elevator safety control device and working method thereof |
| CN103373660A (en) * | 2013-07-16 | 2013-10-30 | 深圳先进技术研究院 | Elevator anti-pinch device |
| CN104340826A (en) * | 2014-10-28 | 2015-02-11 | 无锡港湾网络科技有限公司 | Anti-pinch control method of elevator door |
| CN104847211A (en) * | 2015-03-24 | 2015-08-19 | 江苏科技大学 | Auxiliary system for safety of platform safety doors and train door sections and implementation method thereof |
| GB201612755D0 (en) * | 2016-07-22 | 2016-09-07 | Airdri Ltd | Sliding door monitoring system and method |
| CN206359100U (en) * | 2016-12-30 | 2017-07-28 | 沈阳聚德视频技术有限公司 | A kind of elevator vision light curtain based on ARM |
| CN208454237U (en) * | 2017-12-28 | 2019-02-01 | 曾金 | A kind of safety control and the elevator using the device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137774A (en) * | 2019-12-31 | 2020-05-12 | 滁州职业技术学院 | Automatic door with anti-pinch function |
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