CN110626899B - Door entrance monitoring system for framed glass elevator car - Google Patents
Door entrance monitoring system for framed glass elevator car Download PDFInfo
- Publication number
- CN110626899B CN110626899B CN201910834882.4A CN201910834882A CN110626899B CN 110626899 B CN110626899 B CN 110626899B CN 201910834882 A CN201910834882 A CN 201910834882A CN 110626899 B CN110626899 B CN 110626899B
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- Prior art keywords
- door
- car door
- car
- detector
- detection unit
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Classifications
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- 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
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
-
- 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
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Elevator Door Apparatuses (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a door entrance monitoring system of a framed glass elevator car, wherein a TOF detector is arranged and fixed below a car door lintel in the elevator car and is positioned at a car door datum line when the car door is fully closed; the TOF detector is provided with a horizontal forward detection unit, a horizontal oblique forward detection unit and an oblique downward forward detection unit; the degree of car door closing is confirmed according to the detection result of the horizontal forward detection unit and the horizontal oblique forward detection unit of the TOF detector, when the car door is closed to a certain degree, the TOF detector obliquely downwards and forwards detects the unit to stop working, thereby stopping detecting the foreign matters in the door area and the movement trend outside the hall, and the door area protection device starts to detect the foreign matters in the door area and the movement trend outside the hall only after the car door is opened to a certain degree, so that the phenomenon of back opening of the car door caused by light penetration of the glass door can be avoided, and the normal operation of the elevator is ensured.
Description
Technical Field
The invention relates to an elevator safety detection technology, in particular to a door access monitoring system for a framed glass elevator car.
Background
In the related national standards of elevators, it is clearly specified that an elevator system must be provided with an entrance protection device, and elevator door light curtains are generally used at present to protect passengers entering and exiting an elevator car, and the function of the entrance protection device is mainly to detect whether people or objects enter and exit the car door so as to prevent the car door from being impacted in the closing process.
The ordinary light curtain can only protect the car side area, can not protect the risk that foreign matter that is close to the landing sill position inserts and brings, also can not predict people or thing that has a trend of entering. If fingers are prevented from entering the gap between the car door and the front wall, an independent infrared detector is needed, and an independent camera device is needed for monitoring the children pet.
Currently, there are integrated door protection devices that employ TOF technology. TOF is an abbreviation of Time of Flight (TOF) technology, namely a TOF sensor emits modulated infrared light and reflects after encountering an object, the TOF sensor converts the distance of a shot object by calculating the Time difference or phase difference between the light emission and the reflection so as to generate depth information, and in addition, the TOF sensor can display the three-dimensional outline of the object in a topographic map mode of representing different distances in different colors by combining with the traditional camera shooting. The integral door protection device has the major defects that when a door is a car door which is a framed glass door, infrared light emitted by a TOF sensor penetrates through the glass door at the frameless position, the detection precision is reduced to a great extent, especially when the car door is closed, the infrared light penetrates through the glass surface, the penetrated light cannot return to the TOF sensor, the TOF sensor cannot calculate the flight return time, the car door is mistakenly considered to be in an open state at the moment, if a door system controller does not inform the TOF sensor that the car door is closed, the TOF sensor still detects the movement trend of an object outside the car when the car door is closed, the opposite door is caused after the movement of the object outside the car is detected, and finally the elevator cannot be always closed.
In general, the response of car doors to foreign matters in a door zone and the movement trend outside a hall is monitored and controlled in real time, regardless of the opening and closing states of the car doors, and the defect is that the monitored foreign matters may interfere with the normal operation of an elevator. For example, when the glass door is fully closed, the detector still sends detection signals outside the hall to detect, at this time, infrared light penetrates through the glass, at this time, if someone far away from the hall has a trend of entering the car, the detector can only send corresponding signals to the system controller, the system controller can enable the car door to be opened reversely, when frequent trends of entering the car outside the hall appear, the car door can be continuously opened again, and the operation efficiency of the elevator is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a door entrance monitoring system of a framed glass elevator car, which can avoid the phenomenon of back opening of the car door caused by light penetration of the glass door and ensure normal operation of the elevator.
In order to solve the technical problems, the elevator car entrance monitoring system provided by the invention comprises a door zone protection device;
the car door is a glass door, and the periphery of the upper end of the glass door is wrapped with a light-blocking upper frame;
the door closing side surface of the upper frame and the car inner side surface are perpendicularly intersected with each other on a car door datum line;
the gate protection device comprises a TOF detector and a controller;
the TOF detector is arranged and fixed below a car door lintel in the elevator car and is positioned at a car door datum line when the car door is fully closed;
the TOF detector is provided with a horizontal forward detection unit, a horizontal oblique forward detection unit and an oblique downward forward detection unit;
the horizontal forward detection unit is used for emitting horizontal forward light rays and detecting the distance from the light blocking object in front of the horizontal forward detection unit to the center of the detector;
the horizontal oblique forward detection unit is used for emitting horizontal oblique forward light rays and detecting the distance from a light blocking object in front of the horizontal oblique forward light rays to the center of the detector;
the obliquely downward and forward detection unit is used for emitting obliquely downward and forward light rays and detecting the distance from the obliquely downward and forward light blocking object to the center of the detector;
the minimum distance from the light blocking object detected by the horizontal forward direction detection unit to the center of the detector is used as the distance L from the TOF detector to the car door when the car door is fully closed 1 ；
The minimum distance L from the car door datum line detected by the horizontal oblique forward direction detection unit to the center of the detector 2 Is changed along with the opening degree of the car door;
the controller is used for controlling the minimum distance L between the car door datum line and the center of the detector 2 And distance L from TOF detector to car door when car door is fully closed 1 Calculating according to Pythagorean theorem to obtain opening L of car door 3 ；
The controller, when the car door is opened 3 When the detection value is smaller than the set value, the obliquely downward and forward detection unit is controlled to stop working; when the opening degree L of the car door 3 And when the detection value is larger than the set value, controlling the obliquely-downward forward detection unit to start working.
Preferably, the set value is 8mm to 15mm.
Preferably, the upper frame is made of stainless steel or aluminum alloy.
Preferably, the minimum distance of the TOF detector from the car inner side of the car door is between 5CM and 15 CM.
Preferably, the car door consists of a left door and a right door, and is a middle split door.
Preferably, when the horizontal oblique forward direction detecting unit detects the minimum distance L from the light blocking object at the left front side of the horizontal to the center of the detector 2L And a minimum distance L from the light blocking object at the right front of the horizontal to the center of the detector 2R And L is 2L Same as L 2R The controller judges that the doors are separated in the car and calculates the opening of the car door
Preferably, the car door is a folding side door;
the folding side-opening door comprises a shutter and a slow door;
the shutter is arranged at the rear side of the slow door, the moving directions of the shutter and the slow door are the same, the slow door moving speed is a set multiple f of the shutter moving speed, and the set multiple f is 0.3-0.7;
the shutter and the slow door are both glass doors, and the peripheral side of the upper end is wrapped with an upper frame for blocking light;
the door closing side surface of the shutter upper frame and the car inner side surface are perpendicularly intersected with a shutter car datum line;
the door closing side surface of the slow door upper frame and the car inner side surface are perpendicularly intersected with each other on a slow door car door datum line;
the TOF detector is located at a shutter door datum line when the car door is fully closed.
Preferably, the horizontal oblique forward direction detecting unit detects the distance L from the reference line of the shutter car to the center of the detector 2r And the distance L from the reference line of the slow door car door to the center of the detector 2f The controller judges that the car is folded and the side door is opened according to the synchronous change of the set multiple, and calculates the opening L of the car door 3 ,
Preferably, the folding side-opening door comprises a shutter, a medium speed door and a slow door;
the shutter is arranged at the rear side of the slow door, and the medium speed door is arranged between the shutter and the slow door;
the moving directions of the shutter, the medium speed door and the slow door are the same and the speed ratio is 1: e: f.
preferably, e is 0.6 to 0.7 and f is 0.3 to 0.4.
According to the door entrance and exit monitoring system of the framed glass elevator, the closing degree of the car door is determined according to the detection results of the horizontal forward detection unit and the horizontal oblique forward detection unit of the TOF detector, when the car door is closed to a certain degree, the TOF detector obliquely drops down to the forward detection unit to stop working, so that the detection of foreign matters in a door area and the movement trend outside the elevator is stopped, the door area protection device starts to detect the foreign matters in the door area and the movement trend outside the elevator only after the car door is opened to a certain degree, the phenomenon of reverse opening of the car door caused by light penetration of the glass door can be avoided, and the normal operation of the elevator is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the following brief description of the drawings is given for the purpose of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without the need for inventive work for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of the framed glass elevator car door entry and exit monitoring system of this invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the framed glass elevator car door access monitoring system includes a door zone protection device 2;
the car door 1 is a glass door, and an upper frame for blocking light is wrapped on the periphery of the upper end of the glass door;
the door closing side surface of the upper frame and the car inner side surface are perpendicularly intersected with each other on a car door datum line;
the gate protection device comprises a TOF detector and a controller;
the TOF detector is arranged and fixed below a car door lintel in the elevator car and is positioned at a car door datum line when the car door is fully closed;
the TOF detector is provided with a horizontal forward detection unit, a horizontal oblique forward detection unit and an oblique downward forward detection unit;
the horizontal forward detection unit is used for emitting horizontal forward light rays and detecting the distance from the light blocking object in front of the horizontal forward detection unit to the center of the detector;
the horizontal oblique forward detection unit is used for emitting horizontal oblique forward light rays and detecting the distance from a light blocking object in front of the horizontal oblique forward light rays to the center of the detector;
the obliquely downward and forward detection unit is used for emitting obliquely downward and forward light rays and detecting the distance from the obliquely downward and forward light blocking object to the center of the detector;
the minimum distance from the light blocking object detected by the horizontal forward direction detection unit to the center of the detector is used as the distance L from the TOF detector to the car door when the car door is fully closed 1 ；
The minimum distance L from the car door datum line detected by the horizontal oblique forward direction detection unit to the center of the detector 2 Is changed along with the opening degree of the car door;
the controller is used for controlling the minimum distance L between the car door datum line and the center of the detector 2 And distance L from TOF detector to car door when car door is fully closed 1 Calculating according to Pythagorean theorem to obtain opening L of car door 3 ；
The controller, when the car door is opened 3 When the detection value is smaller than the set value, the obliquely downward and forward detection unit is controlled to stop working; when the car door is openedDegree L 3 And when the detection value is larger than the set value, controlling the obliquely-downward forward detection unit to start working.
Preferably, the set point is 8mm to 15mm (e.g., 10 mm).
Preferably, the upper frame is made of stainless steel or aluminum alloy.
Preferably, the minimum distance of the TOF detector from the car inner side of the car door is between 5CM and 15 CM.
When the car door is fully closed, light emitted by the horizontal forward detection unit of the TOF detector to the front is blocked by an upper frame wrapped around the upper end of the glass door, and at the moment, the vertical line distance from the center of the detector to the upper frame of the glass door can be detected.
In the opening or closing process of the car door, the light emitted obliquely forward by the horizontal oblique forward detection unit of the TOF detector is blocked by an upper frame wrapped on the peripheral side of the upper end of the glass door, and the minimum distance between the center of the detector and the upper frame is the distance L between the car door datum line and the center of the detector 2 Thereby the distance L from the car door datum line to the center of the detector can be detected 2 。
According to the door entrance monitoring system for the framed glass elevator, the closing degree of the car door is determined according to the detection results of the horizontal forward detection unit and the horizontal oblique forward detection unit of the TOF detector, when the car door is closed to a certain degree, the TOF detector obliquely drops down to the front detection unit to stop working, so that the door zone foreign matters and the outdoor movement trend are stopped to be detected, the door zone protection device starts to detect the door zone foreign matters and the outdoor movement trend only after the car door is opened to a certain degree, the phenomenon that the car door is reversely opened due to glass door light penetration can be avoided, and the normal operation of the elevator is ensured.
Example two
The elevator car door entrance monitoring system with the frame glass based on the first embodiment comprises a left door and a right door, and is a split door.
Preferably, when the horizontal oblique forward direction detecting unit detects the minimum distance L from the light blocking object at the left front side of the horizontal to the center of the detector 2L And light blocking object horizontally right front to center of detectorMinimum distance L 2R And L is 2L Same as L 2R The controller judges that the doors are separated in the car and calculates the opening of the car door
In the door entrance/exit monitoring system for a framed glass elevator according to the second embodiment, the car door is a split door, the door closing side end surfaces of the left door and the right door are exposed when the car door is opened, the door closing side end surfaces of the left door and the right door are horizontally moved in opposite directions and the speeds are uniform, and according to this feature, it is possible to determine that the light blocking object is a split door type car door, and it is possible to position the door closing side end surfaces of the car door.
Example III
The door access monitoring system for the framed glass elevator in accordance with the first embodiment, wherein the car door is a folding side door;
the folding side-opening door comprises a shutter and a slow door;
the shutter is arranged at the rear side of the slow door, the moving directions of the shutter and the slow door are the same, the slow door moving speed is a set multiple f of the shutter moving speed, and the set multiple f is 0.3-0.7;
the shutter and the slow door are both glass doors, and the peripheral side of the upper end is wrapped with an upper frame for blocking light;
the door closing side surface of the shutter upper frame and the car inner side surface are perpendicularly intersected with a shutter car datum line;
the door closing side surface of the slow door upper frame and the car inner side surface are perpendicularly intersected with each other on a slow door car door datum line;
the TOF detector is located at a shutter door datum line when the car door is fully closed.
Preferably, the horizontal oblique forward direction detecting unit detects the distance L from the reference line of the shutter car to the center of the detector 2r And the distance L from the reference line of the slow door car door to the center of the detector 2f The controller judges that the car is folded and the side door is opened according to the synchronous change of the set multiple, and calculates the opening L of the car door 3 ,
Preferably, the folding side-opening door comprises a shutter, a medium speed door and a slow door;
the shutter is arranged at the rear side of the slow door, and the medium speed door is arranged between the shutter and the slow door;
the moving directions of the shutter, the medium speed door and the slow door are the same and the speed ratio is 1: e: f.
preferably, e is 0.6 to 0.7 and f is 0.3 to 0.4.
In the elevator car door entrance monitoring system with the frame glass according to the third embodiment, the car door is a folding side-opening door, in the opening and closing process of the car door, the closing side surfaces of the shutter and the slow door do not have step differences on a plane, the moving directions are the same and the speeds are different, the light blocking object can be judged to be the car door according to the characteristics, and the closing side end surface of the car door can be positioned.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (10)
1. A framed glass elevator car door access monitoring system comprising a door zone protection device;
the car door is a glass door, and the periphery of the upper end of the glass door is wrapped with a light-blocking upper frame;
the door closing side surface of the upper frame and the car inner side surface are perpendicularly intersected with each other on a car door datum line;
the gate protection device comprises a TOF detector and a controller;
the TOF detector is arranged and fixed below a car door lintel in the elevator car and is positioned at a car door datum line when the car door is fully closed;
the TOF detector is provided with a horizontal forward detection unit, a horizontal oblique forward detection unit and an oblique downward forward detection unit;
the horizontal forward detection unit is used for emitting horizontal forward light rays and detecting the distance from the light blocking object in front of the horizontal forward detection unit to the center of the detector;
the horizontal oblique forward detection unit is used for emitting horizontal oblique forward light rays and detecting the distance from a light blocking object in front of the horizontal oblique forward light rays to the center of the detector;
the obliquely downward and forward detection unit is used for emitting obliquely downward and forward light rays and detecting the distance from the obliquely downward and forward light blocking object to the center of the detector;
the minimum distance from the light blocking object detected by the horizontal forward direction detection unit to the center of the detector is used as the distance L from the TOF detector to the car door when the car door is fully closed 1 ；
The minimum distance L from the car door datum line detected by the horizontal oblique forward direction detection unit to the center of the detector 2 Is changed along with the opening degree of the car door;
the controller is used for controlling the minimum distance L between the car door datum line and the center of the detector 2 And distance L from TOF detector to car door when car door is fully closed 1 Calculating according to Pythagorean theorem to obtain opening L of car door 3 ；
The controller, when the car door is opened 3 When the detection value is smaller than the set value, the obliquely downward and forward detection unit is controlled to stop working; when the opening degree L of the car door 3 And when the detection value is larger than the set value, controlling the obliquely-downward forward detection unit to start working.
2. The framed glass elevator car door doorway monitoring system of claim 1,
the set value is 8mm to 15mm.
3. The framed glass elevator car door doorway monitoring system of claim 1,
the upper frame is made of stainless steel or aluminum alloy.
4. The framed glass elevator car door doorway monitoring system of claim 1,
the minimum distance of the TOF detector from the car inner side of the car door is between 5CM and 15 CM.
5. The framed glass elevator car door doorway monitoring system of claim 1,
the car door consists of a left door and a right door, and is a middle split door.
6. The framed glass elevator car door doorway monitoring system of claim 5,
when the horizontal oblique forward direction detecting unit detects the minimum distance L from the light blocking object at the left front side of the horizontal to the center of the detector 2L And a minimum distance L from the light blocking object at the right front of the horizontal to the center of the detector 2R And L is 2L Same as L 2R The controller judges that the doors are separated in the car and calculates the opening L of the car door 3 ,
7. The framed glass elevator car door doorway monitoring system of claim 1,
the car door is a folding side door;
the folding side-opening door comprises a shutter and a slow door;
the shutter is arranged at the rear side of the slow door, the moving directions of the shutter and the slow door are the same, the slow door moving speed is a set multiple f of the shutter moving speed, and the set multiple f is 0.3-0.7;
the shutter and the slow door are both glass doors, and the peripheral side of the upper end is wrapped with an upper frame for blocking light;
the door closing side surface of the shutter upper frame and the car inner side surface are perpendicularly intersected with a shutter car datum line;
the door closing side surface of the slow door upper frame and the car inner side surface are perpendicularly intersected with each other on a slow door car door datum line;
the TOF detector is located at a shutter door datum line when the car door is fully closed.
8. The framed glass elevator car door doorway monitoring system of claim 1,
the distance L from the reference line of the shutter car door detected by the horizontal oblique forward direction detection unit to the center of the detector 2r And the distance L from the reference line of the slow door car door to the center of the detector 2f The controller judges that the car is folded and the side door is opened according to the synchronous change of the set multiple, and calculates the opening L of the car door 3 ,
9. The framed glass elevator car door doorway monitoring system of claim 7,
the folding side-opening door comprises a shutter, a medium speed door and a slow door;
the shutter is arranged at the rear side of the slow door, and the medium speed door is arranged between the shutter and the slow door;
the moving directions of the shutter, the medium speed door and the slow door are the same and the speed ratio is 1: e: f.
10. the framed glass elevator car door doorway monitoring system of claim 9,
e is 0.6-0.7, and f is 0.3-0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834882.4A CN110626899B (en) | 2019-09-05 | 2019-09-05 | Door entrance monitoring system for framed glass elevator car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834882.4A CN110626899B (en) | 2019-09-05 | 2019-09-05 | Door entrance monitoring system for framed glass elevator car |
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| CN110626899A CN110626899A (en) | 2019-12-31 |
| CN110626899B true CN110626899B (en) | 2023-07-28 |
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| CN201910834882.4A Active CN110626899B (en) | 2019-09-05 | 2019-09-05 | Door entrance monitoring system for framed glass elevator car |
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| CN110626899A (en) | 2019-12-31 |
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