CN102241354A - Safety elevator - Google Patents
Safety elevator Download PDFInfo
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- CN102241354A CN102241354A CN2011101285936A CN201110128593A CN102241354A CN 102241354 A CN102241354 A CN 102241354A CN 2011101285936 A CN2011101285936 A CN 2011101285936A CN 201110128593 A CN201110128593 A CN 201110128593A CN 102241354 A CN102241354 A CN 102241354A
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- elevator
- elevator door
- surveyed area
- door
- safe
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Abstract
The invention provides a safety elevator, which can effectively detect motion of passengers and rope-shaped foreign material on the entrance and exit port of the elevator, enhance safety, reduce accidents adjacent to the elevator door, eliminate factors affecting the running efficiency of the elevator and meanwhile make maintenance and examination easier. The safety elevator in the invention is provided with a camera device (5) on the entrance and exit port of the elevator for monitoring the switch of the elevator door. The safety elevator comprises an elevator door control device (3) for controlling the opening and closing of the elevator door; an image processing part (6) for determining a detection area according to image signals of the camera device (5) and detecting articles to be detected. The safety elevator can make the detecting area size vary with the opening and closing of the elevator door.
Description
Technical field
The present invention relates to a kind ofly fool proof elevator is set, be particluarly suitable for preventing using in the nipped elevators such as passenger and luggage or rope form foreign matter at elevator door place as the gangway.
Background technology
Known in existing elevator, whether the voltage sensitive sensor of the sheet that passenger and luggage clamped by elevator door is arranged and be used for detection type like the such rope form foreign matter of dust collecting fan electric wire with when the door of elevator doorway is about to close, run into the passenger's of elevator electro-optical pickoff etc. in that detection is installed on the door of elevator doorway, and the moment during by the control elevator door opening-closing and speed guarantee that the passenger can be safely and elevator successfully.
For example, illuminating part is set on elevator door, relative with illuminating part to the position on light accepting part is set, when light is interdicted, make elevator door stay open state, if the elevator door action of closing the door this moment, then make the elevator door action that stops to close the door, and elevator door is reopened.In above-mentioned elevator, when under elevator door is being closed the door the situation of moving, having the passenger to run into elevator, unhappy if the passenger runs into the speed of elevator, then there is adequate time that this passenger is reacted, but, then it can't be detected if can not shelter from the little foreign matter of light.That is to say, when foreign matter is not enough to obstruct the light thereby can't detect, for example when the passenger is leading dog and is taking elevator, also do not enter elevator but the dog led by Dog lead has been tried to be the first and taken advantage of under the situation of elevator the people, elevator may take place less than this Dog lead elevator door cuts out because of detecting, make lift car begin the situation of lifting.
In order to prevent above-mentioned situation, in existing technology, take the space at elevator door opening-closing passage place by camera for monitoring, detect with this and have or not foreign matter.In addition, a kind of scheme is disclosed in patent documentation 1, it is in order to reduce the quantity that is provided with of pick up camera and image processing apparatus, top in the gangway of lift car is provided with camera assembly, and, make shooting area between the switching passage of lift car inside, elevator door and elevator lobby, switch (with reference to patent documentation 1) in regular turn according to the open and-shut mode of elevator door.
In addition, a kind of technology is for example disclosed in patent documentation 2, it is in order to detect foreign matter effectively, and the elevator door detection of avoiding will closing in image processing is foreign matter, be provided with at the upper surface of the threshold of elevator door and detect the mark that foreign matter is used, and the gangway that comprises this mark made a video recording, whether there is foreign matter to exist so that detect according to this mark.
Patent documentation 1: the open patent 2008-120548 of Japan communique
Patent documentation 2: the open patent 2006-89190 of Japan communique
In above-mentioned prior art, owing to just shooting area is switched or mark is set, so can't accomplish under the influence that is not subjected to surrounding environment, to detect effectively the rope form foreign matter, also can't accomplish the situation according to the passenger fully, for example the situation that will bump etc. with the door of elevator doorway such as passenger or luggage takes effective measures and reminds the passenger to be noted.
Summary of the invention
The objective of the invention is to solve existing problem in the above-mentioned prior art, further realize multifunction and enhanced safety.In addition, other purpose of the present invention is to reduce near the accident of elevator door, eliminates the factor that hinders the elevator operating efficiency, makes simultaneously to safeguard and check that operation becomes more easy.
To achieve these goals, in safe elevator of the present invention, be provided with camera head at elevator doorway, monitor with the switching to elevator door, this safe elevator has: control device for elevator door, the switching of its control elevator door; And image processing part, its signal of video signal according to camera head is determined surveyed area, and detects detecting thing, this safe elevator can change the size of surveyed area along with the switching of elevator door.
According to the present invention, owing to can change the size of surveyed area along with the switching of elevator door, thus can detect passenger's action and rope form foreign matter effectively, can enhanced safety.In addition, by improving detection sensitivity and simplified process method, can shorten the capacity of handling the required time and reducing memory device, thereby can make maintenance and maintenance become more easy.
Description of drawings
Fig. 1 is the front view and the block diagram of expression an embodiment of the present invention.
Fig. 2 is the birds-eye view of the elevator doorway of an embodiment.
Fig. 3 is the diagram of circuit of the control (motion detection) of expression one embodiment.
Fig. 4 is the birds-eye view of the surveyed area (motion detection) of expression one embodiment.
Fig. 5 is the block diagram of (detection of rope form foreign matter) of expression an embodiment of the present invention.
Fig. 6 is the diagram of circuit of the control (detection of rope form foreign matter) of expression one embodiment.
Fig. 7 is the birds-eye view of the surveyed area (detection of rope form foreign matter) of expression one embodiment.
Fig. 8 is the block diagram of expression one embodiment (detection of action and rope form foreign matter).
Nomenclature:
1 lift car
2 elevator cab doors
3 control device for elevator door
4 voice playing device
5 camera heads
6,19,21 image processing parts
7 gangway upper frames
8 PCs (PC)
11 image input parts
13 control parts
14 clock signal generating units
15 surveyed area configuration parts
16 image efferents
17 motion detection portions
18 frame memories
20 rope form foreign matter test sections
The specific embodiment
Followingly one embodiment is elaborated with reference to accompanying drawing.
Fig. 1 is expression integrally-built front view of safe elevator and block diagram, the figure shows in the lift car situation when the elevator lobby direction is observed, Fig. 2 is that the expression pick up camera is provided with the birds-eye view of situation, this pick up camera in lift car, be set in place in above the gangway upper frame in.
Be provided with the elevator cab door that carries out on-off action 2 of pair of right and left at the place, gangway of lift car 1, and be provided with the elevator lobby door that opens and closes the elevator lobby gangway at the elevator lobby place.Elevator cab door 2 when lift car rests on the floor of elevator lobby and the elevator lobby badge close, the on-off action of elevator lobby door and elevator cab door 2 opens and closes in linkage.The on-off action of elevator cab door 2 and elevator lobby door is controlled by control device for elevator door 3.
Control device for elevator door 3 and voice playing device 4 are arranged on the top of lift car 1.In addition, the gangway of lift car 1 and the gangway of elevator lobby are generically and collectively referred to as elevator doorway, elevator cab door 2 and elevator lobby door are generically and collectively referred to as elevator door.Camera head 5 is arranged on the inside of elevator doorway upper frame 7, takes towards the elevator lobby direction from the leap lift car of elevator doorway and the threshold near zone between the elevator lobby.As the imaging apparatus of camera head 5, employing can realize the cmos sensor of the HD image of about 1,200,000 pixels.
At the picture signal of in the imaging apparatus of camera head 5, having carried out opto-electronic conversion, unit image-region with the composing images signal is a unit, after carrying out signal conditioning such as analog/digital conversion processing, gain adjustment processing, horizontal synchronizing processing and vertical synchronizing signal processing, output in the image processing part 6 as picture signal.
The operating personnel is connected PC (following slightly be called " PC ") 8 with image processing part 6, observe on one side from camera head 5 outputs and be presented at image on the monitoring device of PC8, carry out the setting of surveyed area on one side, when surveyed area is divided into a plurality of detection block, specify the piece number that detects block, and the end face of assigned elevator door.
The inside of image processing part 6 has: image input part 11, the signal of video signal of input camera head 5; Outside input part 12, the surveyed area that input is imported from PC8, the piece number of the detection block the surveyed area and the end face information of elevator door; Control part 13 generates control signal according to the input of image input part; Clock signal generating unit 14 according to the clock signal by the horizontal synchronizing of the signal of video signal of image input part 11 input and vertical synchronizing signal etc., generates the clock signal based on the surveyed area of the control signal of control part 13; And image efferent 16, to outside output composograph based on the surveyed area of the control signal of the signal of video signal of image input part 11 and control part 13.
In addition, the information of the piece number of the detection block after the size of surveyed area and surveyed area are cut apart outputs to motion detection portion 17.
Surveyed area configuration part 15 is carried out the selection of signal of video signal and is handled, and output to motion detection portion 17 according to the clock signal that is generated by clock signal generating unit 14 at the signal of video signal by 11 inputs of image input part.
Information by the 17 detected actions of motion detection portion is sent to control device for elevator door 3, and control device for elevator door 3 is followed the tracks of the variation of the action that takes place along with the on-off action of elevator door constantly when making elevator door carry out on-off action.
Followingly the interlock action of image processing part 6 and control device for elevator door 3 is described with reference to Fig. 3 and Fig. 4.Fig. 3 is the image processing part 6 of presentation graphs 1 and the diagram of circuit that control device for elevator door 3 is controlled the safety that is accompanied by elevator door opening-closing in linkage.
In step 1, control device for elevator door 3 makes the power connection of camera head 5 and image processing part 6 when receiving the standard-sized sheet signal of elevator door, enter into step 2 afterwards.
In step 2, whether there is action that (with reference to the surveyed area A of Fig. 4 A) takes place in the surveyed area when image processing part 6 is judged the elevator door standard-sized sheet.Surveyed area A is provided in the rectangular shape that always extends to the gangway on the Width across the elevator lobby from front, gangway side of the width on the whole A/F of elevator doorway and the depth direction of elevator lobby (passenger's direct of travel) also broad, the area of this rectangular shape to be can capturing passenger's action, and allows the passenger can take advantage of the mode into elevator to be provided with at leisure.Carry out the above-mentioned judgement that attonity is arranged repeatedly, till in surveyed area A, detecting, enter into step 3 less than this time point of action in detection less than action.
In step 3, control device for elevator door 3 makes elevator door begin to carry out closing movement, after this enters into step 4.
In step 4, in the process that elevator door cuts out, image processing part 6 deletions detect block, make the width of surveyed area in the scope of the open width of elevator door, simultaneously, image processing part 6 deletions detect block to dwindle surveyed area, make the surveyed area of depth direction of elevator lobby also dwindle in linkage (detect blocks and vertical 5 surveyed area A that detect blocks with respect to horizontal 6, the surveyed area B of Fig. 4 B narrows down to horizontal 2 of middle body and detects blocks and vertical 3 and detect blocks) with the open width of elevator door.
After this, image processing part 6 detects the action that whether has towards lift car in surveyed area B, enters into step 6 when the action that is judged to be towards lift car.In being judged as surveyed area B, not when the action of lift car, enter into step 5.
In step 5, control device for elevator door 3 is judged the elevator door closing signal that has or not the expression elevator door to close fully.When being judged as the elevator door closing signal that the expression elevator door cut out fully, enter into step 8, being judged as when not having the elevator door closing signal, turn back to step 4.
In step 6, control device for elevator door 3 makes the elevator door action of opening the door in the opposite direction, enters into step 7 afterwards.
In step 7, image processing part 6 makes the open width that detects block and elevator door increase (expansion surveyed area) in linkage, and judges the action towards lift car that has or not in the surveyed area.
After the action towards lift car disappears, turn back to step 3.
In step 8, the power supply of camera head 5 and image processing part 6 is disconnected.
In addition, for the interlock between open width of elevator door and the surveyed area width, can be arranged to according to the opening and closing speed of predefined elevator door in control device for elevator door 3 or according to the elevator door opening-closing signal of control device for elevator door 3, passing through behind the specific time deletion or increasing the piece number that detects block, to dwindle or to enlarge surveyed area.In addition, surveyed area is not limited in rectangle, also can be set at semicircle etc.
According to above-mentioned embodiment, the time is opened elevator door in the opposite direction owing to had more fully before passenger or luggage are clamped, so can improve passenger's the sense of security.In addition, owing to can reduce the frequency of passenger or luggage and elevator door collision, so can reduce the fault of elevator doorway door.
In addition, owing to can take with 5 pairs of elevator doorways of 1 camera head, thereby can from taken signal of video signal, limit surveyed area and carry out the burden that image processing alleviates image processing, improve detection sensitivity, and can handle the required time by simplifying to handle to shorten, cut down the capacity of memory device etc., so can save cost.
Followingly the method for inspection of the such rope form foreign matter of similar dust collecting fan electric wire is described with reference to Fig. 5, Fig. 6 and Fig. 7.
In Fig. 5, replaced the motion detection portion 17 of the image processing part 6 that is arranged on elevator doorway door place shown in Figure 1 with the image processing part 19 that is provided with rope form foreign matter test section 20.Rope form foreign matter test section 20 adopts the profile extracting mode, and this profile extracting mode is suitable for extracting the straight line portion of brightness part jumpy with the edge of inspected object from view data.
The surveyed area that is set by rope form foreign matter test section 20 is the peripheral region of the threshold part between lift car and elevator lobby at elevator doorway place, along with the on-off action of elevator door dwindles on the open Width of elevator door or enlarges.The signal of video signal of surveyed area temporarily is stored in after the frame memory 18, according to surveyed area in the corresponding row of detection block handle (line processing), come the edge of judgment object from the intensity of variation of adjacent brightness value.
Obtain the information of surveyed area and detection block piece number from control part 13, and the surveyed area of the open width interlock of detection and elevator door (the surveyed area C of Fig. 7 has 6 to detect blocks in the horizontal, there are 2 to detect block in the vertical, surveyed area D is at middle body, there is 1 to detect block in the horizontal, has 2 in the vertical and detect block).It is following that interlock action to image processing part 19 and control device for elevator door 3 describes with reference to accompanying drawing.
Fig. 6 is the image processing part 19 of presentation graphs 5 and the diagram of circuit that control device for elevator door 3 is controlled the safety when being accompanied by elevator door opening-closing in linkage.
In step 11, control device for elevator door 3 makes the power connection of camera head 5 and image processing part 19 when receiving the standard-sized sheet signal of elevator door, enter into step 12 afterwards.
In step 12, have or not rope form foreign matter (with reference to the surveyed area C of Fig. 7 A) in the surveyed area when image processing part 19 is judged the elevator door standard-sized sheet.Surveyed area C is provided on the Width the whole A/F across elevator doorway, and in the one dimension zone of the narrower wire of elevator lobby width on the direction of elevator doorway.Do not detect foreign matter if in surveyed area C, have or not to be judged as in the judgement of rope form foreign matter, then enter into step 13.
In step 13, control device for elevator door 3 makes elevator door begin to carry out closing movement, after this enters into step 14.
In step 14, in the process that elevator door is cutting out, image processing part 19 deletion detects blocks to dwindle surveyed area, makes the width of surveyed area in the scope of the open width of elevator door (with reference to the surveyed area D of Fig. 7 B).
After this, image processing part 19 judgements have or not the rope form foreign matter in above-mentioned surveyed area D, enter into step 16 under the situation that is judged as the rope form foreign matter.In being judged as surveyed area D, not when the action of lift car, enter into step 15.
In step 15, control device for elevator door 3 is judged the elevator door closing signal that has or not the expression elevator door to close.When being judged as the elevator door closing signal that the expression elevator door cut out, enter into step 23, being judged as when not having the elevator door closing signal, turn back to step 14.
In step 16, control device for elevator door 3 stops elevator door, and " because the threshold portion branch detects funicular foreign matter, the elevator door phase down moves by voice playing device 4 broadcasts.Please foreign matter be removed at once " such voice suggestion reminds, and enters into step 17 afterwards.
In step 17, in timer, set the specified time that the elevator door closing movement stops, after having passed through specified time, enter into step 18.
In step 18, image processing part 19 is judged in the surveyed areas and is had or not the rope form foreign matter, when being judged as after testing less than the rope form foreign matter, turns back to step 13, be judged as detect the rope form foreign matter state still when lasting, enter into step 19.
In step 19, control device for elevator door 3 makes elevator door begin to carry out opening action, and enters into step 20.
In step 20, image processing part 19 enlarges the open width of surveyed area and elevator door in linkage, and judgement has or not the rope form foreign matter in surveyed area, when in being judged as surveyed area, not had the rope form foreign matter, turn back to step 13, if be judged as when still having the rope form foreign matter to exist, enter into step 21.
In step 21, when existing from being judged as the rope form foreign matter, judgement whether passed through specific time, be judged as when also not passing through specific time, turn back to step 20, be judged as when having passed through specific time, enter into step 22, send alerting signal, and make elevator stop action to Control Centre.
In step 23, the power supply of camera head 5 and image processing part 19 is disconnected.As mentioned above, when detecting the such rope form foreign matter of the similar dust collecting fan electric wire crossed between elevator lobby and the lift car, make the elevator door action that stops to close the door, draw attention to by speech play simultaneously, thus can improve the passenger feel at ease feel.
Followingly the situation that adopts identical device to realize that motion detection and rope detect is described with reference to Fig. 8.
In Fig. 8, replace the image processing part 6 at elevator doorway door place shown in Figure 1 by image processing part 21.Image processing part 21 is configured to set the surveyed area that carries out motion detection independently and carry out the surveyed area that the rope form foreign matter detects by operation inputting part, and detects judgement by motion detection portion and rope form foreign matter test section in each surveyed area.Whether thus, can realize detecting when will take advantage of into the passenger of lift car and luggage by image processing part 21, detecting has the such rope form foreign matter of similar dust collecting fan electric wire.
As described, if carry out surveyed area dwindle or when enlarging, not to be undertaken by deletion or the piece number that increases a certain size detection block, but be arranged in when dwindling surveyed area, under the situation that does not change the piece number that detects block, dwindle the size that each detects block simultaneously, can improve detection sensitivity thus action or rope form foreign matter.Therefore, when the signal of video signal that photographs at camera head has a lot of noise, perhaps be subjected to the influence of surrounding environment and cause under the unfavorable situation of contrast ratio, still can detect detecting thing effectively.
In addition, according to aforesaid embodiment, because rapid action the passenger can be taken advantage of into elevator when detecting the time and the nipped situation of rope form foreign matter etc. make a distinction clearly with common elevator condition of service, so can not make error detection, thereby can not cause operating efficiency to descend to common elevator service condition.In addition,, can shorten and handle the required time, reduce the capacity of memory device, thereby can make maintenance and maintenance become more easy by improving detection sensitivity and simplified process method.
Claims (10)
1. a safe elevator is provided with camera head at elevator doorway, and the switching of elevator door is monitored that described safe elevator is characterised in that to have:
Control device for elevator door, it controls the switching of described elevator door; And
Image processing part, its signal of video signal according to described camera head is determined surveyed area, and detects detecting thing,
Described safe elevator can change the size of described surveyed area along with the switching of described elevator door.
2. safe elevator according to claim 1 is characterized in that,
Decide the size of described surveyed area according to the A/F that is accompanied by described elevator door opening-closing.
3. safe elevator according to claim 1 is characterized in that,
A/F during along with described elevator door opening-closing diminishes and dwindles described surveyed area.
4. safe elevator according to claim 1 is characterized in that,
Described surveyed area is divided into a plurality of detection blocks, changes the piece number of described detection block along with the switching of described elevator door.
5. safe elevator according to claim 1 is characterized in that,
Described surveyed area is divided into a plurality of detection blocks, when A/F diminishes along with the switching of described elevator door, dwindles described surveyed area under the situation of the piece number that does not change described detection block.
6. safe elevator according to claim 1 is characterized in that,
Described camera head is arranged on the top of described elevator doorway, and described surveyed area is configured to the width rectangular shape of broad all on the direction from elevator lobby to described elevator doorway.
7. safe elevator according to claim 1 is characterized in that,
Described camera head is arranged on the top of described elevator doorway, and described surveyed area is configured to all narrower one dimension zone of width on the direction from elevator lobby to described elevator doorway.
8. safe elevator according to claim 1 is characterized in that,
Described surveyed area can be set for the width all rectangular shape and all narrower one dimension zone of the width on the direction from elevator lobby to described elevator doorway of broad on the direction from elevator lobby to described elevator doorway respectively.
9. safe elevator according to claim 1 is characterized in that,
Control device for elevator door is controlled the switching of described elevator door according to the testing result of described image processing part.
10. safe elevator according to claim 1 is characterized in that,
Control device for elevator door according to the testing result of described image processing part control described elevator door from full-gear to the process of closing fully stop action or reverse opening action.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-111610 | 2010-05-14 | ||
| JP2010111610A JP5690504B2 (en) | 2010-05-14 | 2010-05-14 | Safety elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102241354A true CN102241354A (en) | 2011-11-16 |
| CN102241354B CN102241354B (en) | 2015-06-10 |
Family
ID=44959645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110128593.6A Active CN102241354B (en) | 2010-05-14 | 2011-05-13 | Safety elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5690504B2 (en) |
| CN (1) | CN102241354B (en) |
| SG (1) | SG176380A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2011241002A (en) | 2011-12-01 |
| JP5690504B2 (en) | 2015-03-25 |
| CN102241354B (en) | 2015-06-10 |
| SG176380A1 (en) | 2011-12-29 |
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