CN116374777A - Reflective light curtain system without sill - Google Patents
Reflective light curtain system without sill Download PDFInfo
- Publication number
- CN116374777A CN116374777A CN202310355267.1A CN202310355267A CN116374777A CN 116374777 A CN116374777 A CN 116374777A CN 202310355267 A CN202310355267 A CN 202310355267A CN 116374777 A CN116374777 A CN 116374777A
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- China
- Prior art keywords
- light curtain
- sill
- plate
- light
- roof
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- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000006978 adaptation Effects 0.000 claims abstract 2
- 239000000758 substrate Substances 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000004308 accommodation Effects 0.000 abstract 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Images
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
Landscapes
- Elevator Door Apparatuses (AREA)
Abstract
A sill-free reflective light curtain system belongs to the technical field of elevator light curtains. Including installing respectively light curtain transmitter and the light curtain receiver at the left and right sedan-chair door of elevator on opposite side, light curtain transmitter include transmitter base plate and infrared emission tube, be fixed with the lens hood in a plurality of infrared emission tube outside near the sill, the lens hood enclose by roof, bottom plate, curb plate and front bezel and form and be formed with the accommodation chamber of installing with the infrared emission tube adaptation, the curb plate relative transmitter base plate set up and with one side hookup of roof and bottom plate, the opposite side of roof and bottom plate extends towards the transmitter base plate, the front bezel establish in the front side below of the luminous end of infrared emission tube, be located the breach of front bezel top and constitute preceding light outlet, the roof correspond to the tail end of infrared emission tube, and be located the breach of roof front side and constitute the upper light outlet. The advantages are that: the influence of sill reflection on obstacle detection can be avoided, and the detection precision of the elevator door is improved.
Description
Technical Field
The invention belongs to the technical field of elevator light curtains, and particularly relates to a sill-free reflective light curtain system.
Background
The elevator sill is arranged between the vertical lifting elevator doors, plays a role in guiding the operation of the elevator car doors and landing doors, and passengers taking the elevator need to pass through the sill in the process of entering and exiting the doors after the elevator is opened. Whether the opening and closing of the elevator door is normal or not is a very important consideration in the operation of the elevator. Currently, referring to fig. 1, an infrared light curtain is adopted to detect obstacles at an elevator door, and an infrared transmitting tube 11 and an infrared receiving tube 21 are equidistantly arranged at the edge of the elevator door and used for detecting the entrance and exit of passengers to control the opening and closing of the elevator door. In the process of opening and closing the door, if the infrared receiving tube 21 does not receive the infrared signal, it indicates that an obstacle exists. For light curtains, although larger objects can be accurately detected by infrared rays, for finer objects, there is a possibility that the objects are ignored by blind areas and cause potential safety hazards. In particular, most elevator sills 6 are reflective surfaces, and signal light is reflected to the receiving end through the sills 6, so as to avoid shielding of the smaller obstacle 5, and cause misjudgment of the light curtain.
In view of the above-mentioned prior art, there is a need for an improvement in the construction of existing elevator light curtains, for which the applicant has made an advantageous design, and the technical solutions described below are created in this context.
Disclosure of Invention
The invention aims to provide a sill-free reflection light curtain system which can avoid influence of sill reflection on obstacle detection and improve detection accuracy of an elevator door.
The invention aims at achieving the goal that the sill-free reflection light curtain system comprises a light curtain emitter and a light curtain receiver which are respectively arranged on the left side and the right side of an elevator car door, wherein the light curtain emitter and the light curtain receiver are respectively connected with a controller through connecting cables and form a light curtain in a detection area of the elevator door, the light curtain emitter comprises an emitter substrate longitudinally arranged on the elevator car door and a plurality of infrared emitting tubes which are distributed on the emitter substrate at intervals, and the light curtain receiver comprises a receiver substrate and infrared receiving tubes which are arranged on the receiver substrate, have the same number as the infrared emitting tubes and correspond to the positions of the infrared emitting tubes, and the sill-free reflection light curtain system is characterized in that: a light shield is fixed on the outer side of a plurality of infrared transmitting tubes close to a sill, the light shield is formed by enclosing a top plate, a bottom plate, side plates and a front plate, an accommodating cavity which is matched with the infrared transmitting tubes is formed in the light shield, the side plates are arranged relative to the emitter base plate and are connected with one sides of the top plate and the bottom plate, the other sides of the top plate and the bottom plate extend towards the emitter base plate, the front plate is arranged below the front side of a light emitting end of the infrared transmitting tubes, a notch above the front plate is formed into a front light outlet, the top plate corresponds to the tail end of the infrared transmitting tubes, and the notch on the front side of the top plate is formed into an upper light outlet.
In a specific embodiment of the invention, the top plate is provided with a top rib at the edge of one side far away from the side plate, the bottom plate is provided with a bottom rib at the position corresponding to the top rib, and the top rib and the bottom rib are matched with each other to clamp and fix the infrared emission tube.
In another specific embodiment of the present invention, the light shield further includes a rear barrier strip connected to the top plate, the bottom plate and the side plate and located at the tail end of the infrared emission tube, for clamping the tail of the infrared emission tube.
In another specific embodiment of the present invention, the light shield is made of ABS.
In yet another embodiment of the present invention, the light shield is an integral piece.
In still another specific embodiment of the present invention, the infrared emitting tube is an LED lamp bead, and the LED lamp bead is disposed on the emitter substrate in a recumbent manner.
Due to the adoption of the structure, compared with the prior art, the invention has the beneficial effects that: the elevator door state monitoring system has the advantages that the elevator door state monitoring system is used for monitoring the elevator door state in real time, when the position of the detection area close to the ground is blocked by a small obstacle, the influence on the light curtain system caused by the reflection of the sill is avoided, the opposite signal is completely blocked by the obstacle, the light curtain receiver cannot receive infrared signals, misjudgment can be avoided, and the use safety of the elevator is improved.
Drawings
Fig. 1 is a schematic view of a conventional light curtain.
Fig. 2 is a schematic view of a light curtain according to the present invention.
Fig. 3 is a schematic diagram of the assembly of the light shield and the light curtain emitter.
In the figure: 1. the light curtain emitter, 11. Infrared emission tube, 12. Emitter base plate; 2. the light curtain receiver, 21. The infrared receiving tube, 22. The base plate of the receiver; 3. a light curtain; 4. the light shield comprises a light shield, a top plate, a 411, a top convex edge, a 42, a bottom plate, a 421, a bottom convex edge, 43, a side plate, 44, a front plate, 45, a containing cavity, 46, a front light outlet, 47, an upper light outlet, 48 and a rear barrier; 5. an obstacle; 6. a sill.
Detailed Description
The following detailed description of specific embodiments of the invention, while given in connection with the accompanying drawings, is not intended to limit the scope of the invention, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the invention.
In the following description, all concepts related to the directions (or azimuths) of up, down, left, right, front and rear are directed to the position states where the drawings are being described, so as to facilitate public understanding, and thus should not be construed as being particularly limiting to the technical solutions provided by the present invention.
Referring to fig. 2 and 3, the present invention relates to a reflective light curtain system without sill, which includes a light curtain transmitter 1 and a light curtain receiver 2 respectively installed at opposite sides of left and right doors of an elevator, wherein the light curtain transmitter 1 and the light curtain receiver 2 are respectively connected with a controller through connection cables, and a light curtain 3 is formed in a detection area of the elevator door. The light curtain emitter 1 comprises an emitter substrate 12 longitudinally arranged on a car door and a plurality of infrared emitting tubes 11 distributed on the emitter substrate 12 at intervals, and the light curtain receiver 2 comprises a receiver substrate 22 and infrared receiving tubes 21 which are arranged on the receiver substrate 22, have the same number as the infrared emitting tubes 11 and correspond to each other in position. The principle of reversible light path is applied, and the transmitting end and the receiving end have the same effect in left-right exchange. The infrared emission tube 11 is an LED lamp bead, and the LED lamp bead is welded on the emitter substrate 12 in a horizontal mode, namely one side of the LED lamp bead is attached to the emitter substrate 12.
In order to avoid the influence of the sill reflection on the light curtain system, the invention has the innovation points that: the light shield 4 is fixed on the outer sides of the infrared transmitting tubes 11 close to the sill, and the specific number is determined according to actual conditions. The light shield 4 is formed by enclosing a top plate 41, a bottom plate 42, a side plate 43 and a front plate 44, and an accommodating cavity 45 adapted to the infrared emission tube 11 is formed inside the light shield. The side plate 43 is disposed opposite the emitter substrate 12 and is coupled to one side of the top plate 41 and the bottom plate 42, with the other side of the top plate 41 and the bottom plate 42 extending toward the emitter substrate 12. The front plate 44 is disposed below the front side of the light emitting end of the infrared emitting tube 11, and the notch above the front plate 44 is configured as a front light outlet 46. The top plate 41 corresponds to the tail end of the infrared emission tube 11, and the notch located at the front side of the top plate 41 is configured as an upper light outlet 47. The infrared light emitted from the infrared emission tube 11 is diffused outside the light shield 4 through the front light outlet 46 and the upper light outlet 47, and the light emitted downwards, i.e. in the direction of the sill, in the infrared light emitted from the infrared emission tube 11 is blocked due to the side plate 43 and the front plate 44, so that no signal light is reflected from the sill 6 to the light curtain receiver 2. In this light curtain system, when the detection area is shielded by the small obstacle 5 at a position close to the ground, the correlation signal is shielded, and the light curtain receiver 2 will not receive the infrared signal, so that erroneous judgment can be avoided.
Further, the top plate 41 has a top rib 411 at a side edge far away from the side plate 43, the bottom plate 42 has a bottom rib 421 at a position corresponding to the top rib 411, and the top rib 411 and the bottom rib 421 cooperate with each other to clamp the infrared emission tube 11. The light shield 4 further comprises a rear blocking strip 48 connected with the top plate 41, the bottom plate 42 and the side plate 43 and located at the tail end of the infrared emission tube 11, for clamping the tail of the infrared emission tube 11. The light shield 4 is an integrated part made of ABS (English full name: acrylonitrile Butadiene Styrene, chinese name: acrylonitrile-butadiene-styrene copolymer) material.
Claims (6)
1. The utility model provides a no sill reflection light curtain system, includes light curtain transmitter (1) and light curtain receiver (2) of installing respectively on the left and right sedan-chair door of elevator opposite side, light curtain transmitter (1) and light curtain receiver (2) link to each other with the controller through connecting cable respectively to form light curtain (3) in the detection zone of elevator door, light curtain transmitter (1) including be the transmitter base plate (12) of vertical setting and a plurality of infrared transmitting tube (11) of interval distribution on transmitter base plate (12) on the sedan-chair door, light curtain receiver (2) include receiver base plate (22) and set up infrared receiving tube (21) that quantity and infrared transmitting tube (11) are the same and the position is corresponding on receiver base plate (22), its characterized in that: be close to a plurality of infrared transmitting tube (11) outside of sill and be fixed with lens hood (4), lens hood (4) by roof (41), bottom plate (42), curb plate (43) and front bezel (44) enclose and form and inside be formed with infrared transmitting tube (11) adaptation installation hold chamber (45), curb plate (43) relative transmitter base plate (12) set up and with roof (41) and one side hookup of bottom plate (42), the opposite side of roof (41) and bottom plate (42) extends towards transmitter base plate (12), front bezel (44) set up the front side below at the luminous end of infrared transmitting tube (11), and the breach that is located front bezel (44) top constitutes front light outlet (46), roof (41) correspond to the tail end of infrared transmitting tube (11), and the breach that is located roof (41) front side constitutes upper light outlet (47).
2. The sill-free reflecting light curtain system as claimed in claim 1, wherein the top plate (41) has a top rib (411) at a side edge far from the side plate (43), the bottom plate (42) has a bottom rib (421) at a position corresponding to the top rib (411), and the top rib (411) and the bottom rib (421) are matched with each other to clamp the infrared emission tube (11).
3. The sill-free reflective light curtain system of claim 1, wherein the light shield (4) further comprises a rear barrier (48) coupled to the top plate (41), the bottom plate (42), and the side plate (43) and located at the tail end of the infrared emission tube (11), for clamping the tail end of the infrared emission tube (11).
4. The reflective light curtain system without sill according to claim 1, wherein the light shielding cover (4) is made of ABS.
5. The sill-free reflective light curtain system of claim 1, wherein the light shield (4) is an integral piece.
6. The sill-free reflective light curtain system of claim 1, wherein the infrared emitting tube (11) is an LED lamp bead, and the LED lamp bead is disposed on the emitter substrate (12) in a recumbent manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310355267.1A CN116374777A (en) | 2023-04-06 | 2023-04-06 | Reflective light curtain system without sill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310355267.1A CN116374777A (en) | 2023-04-06 | 2023-04-06 | Reflective light curtain system without sill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116374777A true CN116374777A (en) | 2023-07-04 |
Family
ID=86974617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310355267.1A Pending CN116374777A (en) | 2023-04-06 | 2023-04-06 | Reflective light curtain system without sill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116374777A (en) |
-
2023
- 2023-04-06 CN CN202310355267.1A patent/CN116374777A/en active Pending
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