WO2006018920A1

WO2006018920A1 - Doorway device for elevator

Info

Publication number: WO2006018920A1
Application number: PCT/JP2005/008761
Authority: WO
Inventors: Toshio Masuda; Masahiro Shikai; Hiroyuki Kawano
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-08-18
Filing date: 2005-05-13
Publication date: 2006-02-23
Also published as: CN1984835A; KR20070041743A; KR100869612B1; WO2006018869A1

Abstract

In a doorway device for an elevator, a detection device for detecting an object is provided on an elevator door. The detection device has a measurement section for measuring the distance between itself and the object and a processing section electrically connected to the measurement section. The measurement section has a light emission section, a lens for focusing reflected light produced when the light from the light emission section is reflected by the object, and a focus position detection section for producing a signal corresponding to the position of the focus point of the reflected light. The processing section determines, based on the signal from the measurement section, the presence or absence of the object in a predetermined detection region.

Description

Specification

Elevator entrance device

Technical field

[0001] The present invention relates to an entrance and exit apparatus of an elevator for detecting, for example, a passenger at a landing.

Background art

[0002] Conventionally, a transmitter may be provided at one door and a receiver may be provided at the other door in order to detect that a passenger approaches an entrance of an openable elevator. The transmitter emits infrared light to the landing side. The receiver is to receive the reflected light when the infrared light from the transmitter is reflected by the passengers at the landing! /. In a conventional elevator, when the amount of light received by the receiver exceeds a set value, the approach of a passenger to the entrance of the elevator is detected (see Patent Document 1).

Patent Document 1: Patent No. 3088936

Disclosure of the invention

Problem that invention tries to solve

However, if the reflectivity of the passenger is low due to, for example, clothes, even if the passenger approaches the elevator entrance, the light quantity of the reflected light from the passenger is insufficient, and the passenger approaches the elevator entrance Sometimes it can not be detected.

In addition, since the receiver receives not only the reflected light of the passenger's force but also the disturbance light, the amount of light received by the receiver may increase due to the disturbance light, which may cause a malfunction.

The present invention has been made to solve the problems as described above, and it is an object of the present invention to obtain an elevator entrance / exit device capable of more reliably detecting an object to be detected. Means to solve the problem

According to the present invention, an entrance device of an elevator includes: a light emitting portion; an imaging optical system for forming an image of a reflected light when light of the light emitting portion is reflected by a detection object; And an imaging position detection unit for generating a signal according to the position of the point, and based on a signal from a measurement unit provided on an elevator door for opening and closing an elevator entrance and an imaging position detection unit. And a processing unit that determines the presence or absence of an object to be detected in a predetermined detection area. Brief description of the drawings

FIG. 1 is a longitudinal sectional view showing an entrance and exit apparatus of an elevator according to Embodiment 1 of the present invention. [FIG. 2] A longitudinal sectional view showing an entrance and exit apparatus for an elevator according to Embodiment 2 of the present invention. Fig. 3 is a longitudinal sectional view showing an entrance and exit device of an elevator according to Embodiment 3 of the present invention. [Fig. 4] A longitudinal sectional view showing an entrance and exit device of an elevator according to Embodiment 4 of the present invention. It is a longitudinal cross-sectional view which shows the entrance-and-exit apparatus of the elevator by Embodiment 5 of invention. [FIG. 6] It is a longitudinal cross-sectional view which shows the entrance-and-exit apparatus of the elevator by Embodiment 6 of this invention.

FIG. 7 is a front view showing an entrance and exit apparatus of an elevator according to a seventh embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a longitudinal sectional view showing an elevator entrance and exit apparatus according to Embodiment 1 of the present invention. In the figure, a pair of car doors 4 for opening and closing the car entrance 3 is mounted on a force gear 2 moved up and down in the hoistway 1. The doors 4 of each car are reciprocated in opposite directions along the direction of the car entrance 3. The car entrance 3 is opened and closed by the reciprocation of each car. Each force door 4 is reciprocated by a door drive (not shown) mounted on the force lever 1.

On each floor, a landing doorway 6 opened and closed by a pair of landing doors 5 is provided. Each landing door 5 is engageable with each force door 4 by an engagement device (not shown) when landing on each force floor 2 floor. Further, the doors 5 of each landing can reciprocate with the doors 4 of each car by engagement with the doors 4 of each car. Thus, each landing door 5 is a landing It is reciprocated in the direction of the entrance of the entrance 6. The landing doorway 6 is opened and closed by reciprocation of the doors 5 at each landing.

An elevator entrance 9 for communicating the inside of the car 2 and the landing 8 with each other when the car 2 lands has a car entrance 3 and a landing entrance 6. Further, an elevator door 10 for opening and closing the elevator entrance 9 has a car door 4 and a landing door 5.

At the door closing side end of the door 4 of one car, a detection device (distance sensor) 12 capable of detecting the passenger 11 as a detected object without contact is provided. The detection device 12 is capable of detecting the passenger 11 when the passenger 11 is located within a predetermined detection area. The predetermined detection area is set at landing 8.

The detection device 12 determines the presence or absence of the passenger 11 within a predetermined detection area based on the information from the measurement unit 13 and the measurement unit 13 for measuring the distance between the passenger 11 Have part 14!

For example, the measurement unit 13 is a light emitting unit 16 that is a light emitting element that emits light such as infrared light or visible light as measurement light 15 toward the landing 8 side, and the light from the light emitting unit 16 is reflected by the passenger 11 It has a lens 18 which is an imaging optical system for imaging the reflected light 17 of when, and an imaging position detection unit 19 disposed at a position where the reflected light 17 is imaged by the lens 18 . The light emitting unit 16 may be, for example, a light emitting diode, a semiconductor laser, or an irradiation device in which a light emitting diode (or a semiconductor laser) and a lens are combined. Further, examples of the imaging position detection unit 19 include a position detection element, an imaging element, a photodiode array, and the like. The measurement light 15 is constantly emitted from the light emitting unit 16 to the landing 8 side. Further, the irradiation direction of the measurement light 15 is substantially horizontal.

The lens 18 is disposed above the light emitting unit 16 and is disposed on the landing 8 side of the imaging position detection unit 19. The reflected light 17 from the passenger 11 is imaged on the imaging position detector 19 by the lens 18.

The position of the imaging point of the reflected light 17 in the imaging position detection unit 19 corresponds to the position of the passenger 11 with respect to the measurement unit 13. The imaging position detection unit 19 detects the position of the image forming point of the reflected light 17 by the lens 18 and generates a signal (detection signal) according to the position of the imaging point. ing. That is, the imaging position detection unit 19 generates a detection signal according to the position of the passenger 11 with respect to the measurement unit 13. The imaging position detection unit 19 is electrically connected to the processing unit 14. The detection signal generated by the imaging position detection unit 19 is output to the processing unit 14.

The detection signal from the imaging position detection unit 19 is input to the processing unit 14 as position information. The processing unit 14 calculates a distance between the light emitting unit 16 and the passenger 11 as an operation value based on the input position information, and the predetermined detection based on the operation value obtained by the operation unit 20. And a determination unit 21 that determines the presence or absence of the passenger 11 in the area.

The calculation unit 20 is electrically connected to the imaging position detection unit 19 and the determination unit 21 respectively. The determination unit 21 determines that the passenger 11 is located within the predetermined area when the calculated value obtained by the calculation unit 20 is equal to or less than a preset set value, and the calculated value is set as the set value. When exceeding, the passenger 11 is positioned outside the predetermined detection area and determined to be. The judgment unit 21 outputs judgment information on the presence / absence of detection of the passenger 11 judged based on the information from the calculation unit 20! /.

The car 2 is mounted with a door opening / closing control device (not shown) for controlling the opening / closing of the entrance 9 of the elevator. The determination unit 21 is electrically connected to the door opening / closing control device. The determination information from the determination unit 21 is input to the door open / close control device.

The door opening / closing control device reverses the elevator door 10 in the door closing operation in the door opening direction when it receives from the determination unit 21 determination information that the position of the passenger 11 is within the predetermined detection area. Control the door drive. Further, the door opening / closing control device controls the door drive device so that the elevator door 10 performs the normal opening / closing operation when it receives from the determination unit 21 determination information that the position of the passenger 11 is out of the predetermined detection area. Do.

Next, the operation will be described. Measurement light 15 is constantly emitted from the light emitting unit 16 to the landing 8 side. When the passenger 11 approaches the entrance 9 of the elevator and the measurement light 15 is reflected by the passenger 11, the reflected light 17 is imaged on the imaging position detection unit 19 by the lens 18. The position of the imaging point of the reflected light 17 at this time is a position according to the position of the passenger 11 with respect to the light emitting unit 16. Thereafter, the position of the imaging point of the reflected light 17 is detected by the imaging position detection unit 19, and a detection signal corresponding to the position of the imaging point is used as position information from the imaging position detection unit 19 to the computing unit 20. Output. Thereafter, the calculation unit 20 calculates based on the position information from the imaging position detection unit 19 and obtains the distance between the light emitting unit 16 and the passenger 11 as a calculation value. Thereafter, information on the operation value is output from the operation unit 20 to the determination unit 21.

Thereafter, information on the calculated value is input to the determination unit 21. The determination unit 21 determines whether the calculated value is less than or equal to the set value. The determination unit 21 determines that the position of the passenger 11 is within the predetermined detection area when the calculated value is less than or equal to the set value, and the position of the passenger 11 is determined when the calculated value exceeds the set value. It is determined that it is outside the detection area of

After this, the determination information determined by the determination unit 21 is output from the determination unit 21 to the door opening / closing control device. The door opening / closing control device controls the door driving device based on the determination information, and opening / closing of the entrance 9 of the elevator is performed.

In the entrance device of such an elevator, the reflected light 17 from the passenger 11 is imaged by the lens 18, and a detection signal corresponding to the position of the imaging point of the reflected light 17 is an imaging position detector 19 As a result, it is possible to detect the position of the passenger 11 based on the position of the imaging point of the reflected light 17 which is not related to the light amount of the reflected light 17. As a result, even when the amount of light of the reflected light 17 received from the passenger 11 whose reflectance of the passenger 11 is low is small, the passenger 11 who is the object to be detected can be detected more reliably. The lens 18 may be disposed below the light emitting unit 16.

Embodiment 2.

FIG. 2 is a longitudinal sectional view showing an entrance and exit apparatus of an elevator according to a second embodiment of the present invention. In the figure, an upper detection device 31 and a lower detection which are plural (two in this example) detection devices disposed at the door closing side end of the car door 4 are arranged in the vertical direction (height direction). A device 32 is provided. The upper detection device 31 is disposed above the lower detection device 32.

The upper detection device 31 is capable of detecting an object to be detected disposed in a high-order area located at a predetermined height from the floor surface of the landing 8. Further, the lower detection device 32 can detect an object to be detected which is disposed in the lower region located lower than the high region. That is, the height The detection area for the direction is different between the upper detection device 31 and the lower detection device 32. In this example, the object to be detected disposed in the high region is the bed 33, and the object to be disposed in the low region is the cart 34.

The upper detection device 31 includes a measurement unit 35 and a processing unit 36 electrically connected to the measurement unit 35. In addition, the lower detection device 32 includes a measurement unit 37 and a processing unit 38 electrically connected to the measurement unit 37.

The configuration of each of measurement unit 35 and measurement unit 37 is substantially the same as the configuration of measurement unit 13 in the first embodiment, but only the irradiation direction of the measurement light from each light emitting unit 16 is used in the first embodiment. It is different from That is, the measurement light 15a is emitted downward from the light emitting unit 16 of the measurement unit 35, and the measurement light 15b is emitted downward from the light emission unit 16 of the measurement unit 37.

The reflected light 17 a when the measurement light 15 a is reflected by the bed 33 is imaged on the imaging position detection unit 19 of the measurement unit 35. In the measurement unit 35, the position of the imaging point of the reflected light 17a is detected by the imaging position detection unit 19, and a signal (detection signal) corresponding to the position of the imaging point of the reflected light 17a forms an image as position information. The position detection unit 19 outputs the data to the processing unit 36.

The processing unit 36 calculates the distance between the light emitting unit 16 and the bed 33 based on the input position information, and calculates the distance based on the calculated values obtained by the calculation unit 20. And a determination unit 21 that determines the presence or absence of the bed 33 in the detection area of the upper detection device 31.

When the input operation value is equal to or less than the preset set value, the determination unit 21 of the processing unit 36 determines that the bed 33 is located within the predetermined area, and the operation value is set. When the value exceeds V, the bed 33 is positioned outside the predetermined detection area, and it is determined that it is! /,. The determination unit 21 of the processing unit 36 is configured to output high-order determination information based on the presence or absence of the detection of the bed 33 determined based on the information from the calculation unit 20! /.

The reflected light 17 b when the measurement light 15 b is reflected by the carriage 34 is imaged on the imaging position detection unit 19 of the measurement unit 37. In the measurement unit 37, the position of the imaging point of the reflected light 17b is detected by the imaging position detection unit 19, and a signal (detection signal) corresponding to the position of the imaging point of the reflected light 17b is imaged as position information. The position detection unit 19 outputs the data to the processing unit 38.

The processing unit 38 determines the distance between the light emitting unit 16 and the carriage 34 based on the input position information. It has an arithmetic unit 20 to be calculated and determined, and a determination unit 21 that determines the presence or absence of the carriage 34 in the detection area of the lower detection device 32 based on the calculation value calculated by the arithmetic unit 20.

When the input calculated value is equal to or less than the preset set value, the determination unit 21 of the processing unit 38 determines that the carriage 34 is positioned within the predetermined area, and the calculated value is set. When the value V is exceeded, it is determined that the carriage 34 is located outside the predetermined detection area! /. The determination unit 21 of the processing unit 38 is configured to output low-order determination information about the presence of the carriage 34 determined based on the information from the calculation unit 20! /.

The determination unit 21 of each of the processing unit 36 and the processing unit 38 is electrically connected to the door opening / closing control device. The door opening / closing control device controls the opening / closing of the entrance 9 of the elevator based on the high-order judgment information from the processing unit 36 and the low-order judgment information from the processing unit 38. That is, in the door opening / closing control device, when only the bed 33 is detected by the upper detecting device 31, when only the carriage 34 is detected by the lower detecting device 32, or each of the bed 33 and the carriage 34 is an upper detecting device. The door drive device is controlled so as to reverse the elevator door 10 in the door closing direction in the door opening direction when it is detected by 31 and the lower detection device 32. The other configuration is the same as that of the first embodiment.

Next, the operation will be described. The measuring light 15a is constantly emitted from the light emitting unit 16 of the upper detecting device 31 and the measuring light 15b from the light emitting unit 16 of the lower detecting device 32 to the lower side of the landing 8 side.

When the bed 33 approaches the entrance 9 of the elevator and the measurement light 15a is reflected by the bed 33, the reflected light 17a is imaged on the imaging position detection unit 19 of the measurement unit 35 by the lens 18. The position of the imaging point of the reflected light 17a at this time is a position corresponding to the position of the bed 33 with respect to the light emitting unit 16 of the upper detection device 31!

After that, in the measurement unit 35, the position of the imaging point of the reflected light 17a is detected by the imaging position detection unit 19, and the detection signal corresponding to the position of the imaging point of the reflected light 17a is the imaging position detection. The data is output from the unit 19 to the processing unit 36. Thereafter, in the processing unit 36, the detection signal of the imaging position detecting unit 19 of the measuring unit 35 is processed in the same manner as the processing unit 14 of the first embodiment. As a result, the high-level judgment information on the presence / absence of detection of the bed 3 3 is output from the processing unit 36 to the door opening / closing control device Be done.

When the carriage 34 approaches the entrance 9 of the elevator and the measurement light 15 b is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detection unit 19 of the measurement unit 37 by the lens 18. The position of the imaging point of the reflected light 17b at this time is a position corresponding to the position of the carriage 34 with respect to the light emitting portion 16 of the lower detection device 32!

After that, in the measurement unit 37, the position of the imaging point of the reflected light 17b is detected by the imaging position detection unit 19, and the detection signal corresponding to the position of the imaging point of the reflected light 17b is the imaging position detection. It is outputted from the unit 19 to the processing unit 38. Thereafter, in the processing unit 38, the detection signal of the imaging position detecting unit 19 of the measuring unit 37 is processed in the same manner as the processing unit 14 of the first embodiment. As a result, the low level judgment information on the presence or absence of the detection of the carriage 34 is outputted from the processing unit 38 to the door opening / closing control device.

Thereafter, when the high-order judgment information and the low-order judgment information are input to the door opening / closing control device, the door drive control device is controlled by the door opening / closing control device based on the high-order judgment information and the low-order judgment information, and the elevator entrance Opening and closing of 9 is performed. That is, when at least one of the bed 33 and the carriage 34 is detected, the elevator door 10 in the door closing operation is reversed in the door opening direction.

In such an elevator entrance / exit device, since the upper detection device 31 and the lower detection device 32 are arranged in the vertical direction, the height of the detection object is largely different as in the bed 33 and the carriage 34. Even in this case, each of the bed 33 and the carriage 34 can be detected more reliably.

In the above example, the measurement light 15a is constantly emitted from the light emitting unit 16 of the upper detection device 31, and the measurement light 15b is constantly emitted from the light emission unit 16 of the lower detection device 32. The measurement light 15a from the light emitting unit 16 of the upper power detection device 31 and the measurement light 15b from the light emission unit 16 of the lower detection device 32 may be selectively irradiated by the control of the door opening / closing control device. .

Embodiment 3.

FIG. 3 is a longitudinal sectional view showing a detection device of an elevator according to a third embodiment of the present invention. In the figure, a detection device 41 is provided at the upper part of the door closing side end of the door 4 of one car. It is done. The configuration of the detection device 41 is the same as the configuration of the upper detection device 31 of the second embodiment. That is, the detection device 41 includes a measurement unit 35 and a processing unit 36.

The light emitting unit 16 of the measuring unit 35 is capable of emitting the measuring light 15 so as to pass through the low order detection area after passing through the high order detection area. Therefore, the detection device 41 is to be detected which is disposed in each of the high detection area located at the height between the floor surface of the landing 8 and the light emitting unit 16 and the low detection area located below the high detection area. It is possible to detect the body.

When the bed 33 which is the detection target is located in the high level detection area, the measurement light 15 is blocked by the bed 33 and does not reach the low level detection area. The measurement light 15 from the light emitting unit 16 of the measurement unit 35 is reflected as the reflected light 17a by the bed 33 when the bed 33 is in the high order detection area, and the carriage 34 serving as the detection object is only in the low order detection area. When there is, it passes through the high detection area and is reflected by the carriage 34 as the reflected light 17 b. The reflected light 17 a and the reflected light 17 b are imaged on the imaging position detection unit 19 of the measurement unit 35.

The imaging position detection unit 19 of the measurement unit 35 is configured to output a detection signal corresponding to the position of the imaging point of the reflected light 17a and the reflected light 17b to the processing unit 36 as position information. The calculation unit 20 of the processing unit 36 is configured to calculate based on the position information from the imaging position detection unit 19 to obtain a calculation value. The determination unit 21 of the processing unit 36 detects the detection target in the high-order detection area and the low-order detection area based on the calculation value obtained by the calculation unit 20 (in this example, either the bed 33 or the carriage 34 The presence / absence is determined, and the determination information of the presence / absence of detection of the detection object is output to the door opening / closing control device !. The other configuration is the same as that of the second embodiment.

Next, the operation will be described. The measuring light 15 is constantly emitted downward from the light emitting section 16 of the detecting device 41 toward the landing 8 side.

When the bed 33 approaches the entrance 9 of the elevator and the measurement light 15 is reflected by the bed 33, the reflected light 17a is imaged on the imaging position detection unit 19 of the measurement unit 35 by the lens 18. Further, when the carriage 34 approaches the entrance 9 of the elevator and the measurement light 15 is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detection unit 19 of the measurement unit 35 by the lens 18. Thereafter, a detection signal corresponding to the position of the imaging point is output from the imaging position detecting unit 19 of the measuring unit 35 to the processing unit 36 as position information. The subsequent operation is similar to that of the first embodiment. In the entrance device of such an elevator, since the measurement light 15 from the light emitting unit 16 is irradiated downward, the height of the detected object is the same as the bed 33 and the carriage 34. Even if there is a large difference, the measurement light 15 can be reflected by the bed 33 and the carriage 34. Therefore, each of the bed 33 and the carriage 34 can be detected more reliably.

Further, since the bed 33 in the high-order detection area and the carriage 34 in the low-order detection area can be detected by the common detection device 41, the number of detection devices 41 can be reduced, and the manufacturing cost can be reduced. be able to.

Embodiment 4.

FIG. 4 is a longitudinal sectional view showing an elevator entrance and exit apparatus according to a fourth embodiment of the present invention. In the figure, a safety shoe 51 extending in the vertical direction is provided at the door closing side end of the door 4 of each car. The safety shoe 51 incorporates a switch (not shown) electrically connected to the door opening / closing control device. The switch is operated, for example, when the passenger 11 or the like to be detected hits the safety shoe 51. By operating the switch, the switch signal is also output to the door opening / closing control device. The door open / close control device controls the door drive device so that the elevator door 10 in the door closing operation is reversed in the door opening direction by the input of the operation signal.

Inside the safety shoe 51, a detection device 12 having the same configuration as that of the first embodiment is mounted. The portion on the landing 8 side of the safety shoe 51 is a transparent plate so that the measurement light 15 from the light emitting unit 16 is irradiated to the landing 8 side. Transparent plates are made of plastic or glass! The other configuration and operation are the same as in the first embodiment.

In such an elevator entrance device, the detection device 12 is mounted in the safety shoe 51. Therefore, in addition to the detection of the passenger 11 by the detection device 12, the detection of the safety shoe 51 makes the passenger 11 more reliable. Can be detected.

Embodiment 5

FIG. 5 is a longitudinal sectional view showing an entrance and exit apparatus for an elevator according to a fifth embodiment of the present invention. In the figure, a detection device 61 is provided at the door closing side end of the door 4 of one car. The detection device 61 includes a measurement unit 62, and a processing unit 36 electrically connected to the measurement unit 62. have. The measuring unit 62 and the processing unit 36 are provided on a common support 66 fixed to the door 4 of one car. The measuring unit 62 includes a plurality of light emitting units, ie, a first light emitting unit 63 and a second light emitting unit 64, a lens 18, and an imaging position detecting unit 19.

The lens 18, the imaging position detection unit 19, and the processing unit 36 have the same configuration as the lens 18, the imaging position detection unit 19, and the processing unit 36 in the first embodiment. Further, as the first and second light emitting parts 63 and 64, the same light emitting elements as the light emitting part 16 in the first embodiment are used. Furthermore, in this example, the first light emitting unit 63 is disposed above the second light emitting unit 64.

The car 2 is provided with a door opening / closing control device (control device) 55 for controlling the opening / closing of the entrance 9 of the elevator. The first light emitting unit 63, the second light emitting unit 64, and the processing unit 36 are electrically connected to the door opening and closing control device 65, respectively. The door opening / closing control device 65 selectively emits the first and second light emitting portions 63 and 64. That is, the control of the door opening / closing control device 65 causes the first light emitting unit 63 to emit light and the second light emitting unit 64 to emit light, and the second light emitting unit 64 to emit light. And can be switched between a second control mode in which the light emission of the first light emitting unit 63 is stopped.

When the first light emitting unit 63 emits light, the measuring light 15 a is emitted from the first light emitting unit 63 to the landing 8 side. In addition, when the second light emitting unit 64 emits light, the measurement light 15 b is emitted from the second light emitting unit 64 to the landing 8 side.

The detection device 61 can detect the detection objects respectively disposed in the high level area located at a predetermined height from the floor surface of the landing 8 and the low level area located below the high level area. ing. Further, when the door opening / closing control device 65 is in the first control mode, the detecting device 61 detects the detection target placed in the high order area, and the door opening / closing control device 65 detects the second control mode. It is designed to detect the object to be detected placed in the low-order area. That is, the detection area in the height direction of the detection device 61 is when the door opening / closing control device 65 is in the first control mode and when the door opening / closing control device 65 is in the second control mode. And they are different from each other. In this example, the object to be detected disposed in the high order region is a bed 33, and the object to be detected disposed in the low order region is a carriage.

Also, the reflected light 17a when the measurement light 15a is reflected by the detection subject, and the measurement light 15b The reflected light 17 b when reflected by the light exit is imaged by the common lens 18. Further, the position of the imaging point of the reflected light 17a and the position of the imaging point of the reflected light 17b are detected by the common imaging position detection unit 19. The imaging position detection unit 19 outputs a signal (detection signal) corresponding to the position of the imaging point of the reflected light 17a and the reflected light 17b to the processing unit 36 as positional information.

The processing unit 36 includes an arithmetic unit 20 and a determination unit 21. When the door opening / closing control device 65 is set to the first control mode, the calculation unit 20 determines the position between the first light emission unit 63 and the detection subject based on the input position information. When the door open / close control device 65 is in the second control mode, the distance between the second light emitting unit 64 and the object is calculated based on the input position information. It is calculated and calculated.

When the door opening / closing control device 65 is in the first control mode, the determination unit 21 of the bed (subject to be detected) 33 in the high order area based on the calculation value obtained by the calculation unit 20. It is determined whether or not the door opening / closing controller 65 is in the second control mode, and the presence or absence of the bogie (the to-be-detected body) 34 in the lower region is determined based on the calculated value obtained by the calculation unit 20. It is designed to judge. Further, the determination unit 21 is configured to output, to the door opening / closing control device 65, determination information on the presence or absence of detection of the detection target determined based on the information from the calculation unit 20.

The door opening and closing control device 65 is configured to control the opening and closing of the entrance 9 of the elevator based on the determination information from the determination unit 21. That is, when the bed 33 is placed in the high region when the door control unit 65 is in the first control mode and when the door control unit 65 is in the second control mode, the door 34 is low. When arranged in the area, the door drive is controlled to reverse the elevator door 10 during the door closing operation in the door opening direction. The other configuration is the same as that of the first embodiment.

Next, the operation will be described. When the door opening / closing control device 65 is in the first control mode, only the first light emitting unit 63 emits light under the control of the door opening / closing control device 65, and the measurement light 15a is emitted from the first light emitting unit 63 to the landing 8 It is irradiated to the side.

When the bed 33 approaches the entrance 9 of the elevator and the measurement light 15 a is reflected by the bed 33, the reflected light 17 a is imaged on the imaging position detection unit 19 by the lens 18. Reflected light at this time The position of the imaging point 17 a is a position corresponding to the position of the bed 33 with respect to the first light emitting portion 63.

Thereafter, the position of the imaging point of the reflected light 17a is detected by the imaging position detection unit 19, and a detection signal corresponding to the position of the imaging point of the reflected light 17a is transmitted from the imaging position detection unit 19 to the processing unit. Output to 36 Thereafter, in the processing unit 36, the detection signal from the imaging position detection unit 19 is processed in the same manner as in the first embodiment. As a result, determination information on the presence or absence of the bed 33 in the high level area (information on whether or not the bed 33 is in the high level area) is output from the processing unit 36 to the door opening / closing control device 65.

Thereafter, the determination information from the processing unit 36 is input to the door opening and closing control device 65, and the door drive device is controlled by the door opening and closing control device 65 based on the determination information. Thus, the opening / closing operation of the entrance 9 of the elevator is controlled, and when it is detected that the bed 33 is in the high region, the elevator door 10 in the door closing operation is reversed in the door opening direction.

On the other hand, when the door opening / closing control device 65 is in the second control mode, only the second light emitting unit 64 emits light by the control of the door opening / closing control device 65, and the measurement light 15b emits the second emission. It is irradiated from the section 64 to the landing 8 side.

When the carriage 34 approaches the entrance 9 of the elevator and the measurement light 15 b is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detection unit 19 by the lens 18. The position of the imaging point of the reflected light 17 b at this time is a position according to the position of the carriage 34 with respect to the second light emitting unit 64.

Thereafter, the position of the imaging point of the reflected light 17b is detected by the imaging position detection unit 19, and a detection signal corresponding to the position of the imaging point of the reflected light 17b is transmitted from the imaging position detection unit 19 to the processing unit. Output to 36 Thereafter, in the processing unit 36, the detection signal from the imaging position detection unit 19 is processed in the same manner as in the first embodiment. As a result, determination information on the presence or absence of the carriage 34 in the lower region (information on whether or not the carriage 34 is in the lower region) is output from the processing unit 36 to the door opening / closing control device 65.

Thereafter, the determination information from the processing unit 36 is input to the door opening and closing control device 65, and the door driving device is controlled by the door opening and closing control device 65 based on the determination information. As a result, the opening / closing operation of the entrance 9 of the element is controlled, and it is detected that the carriage 34 is in the lower region. When it does, the elevator door 10 in the door closing operation is reversed in the door opening direction.

In such an elevator entrance / exit device, a plurality of light emitting units 63 and 64 are provided in the door 4 of a common car, and the door opening / closing control device 65 selectively causes the light emitting units 63 and 64 to emit light. When the light from each of the light emitting portions 63, 64 is reflected by the detection object, the reflected light is imaged by the common lens 18, and the position of the imaging point of the reflected light is detected by the common result. Since the image position detection unit 19 is used, a plurality of detection areas can be secured by the light emission of the light emitting units 63 and 64, and the detection area can be expanded. Further, the number of lenses 18 and the imaging position detectors 19 can be reduced, and the cost can be reduced.

Embodiment 6

FIG. 6 is a longitudinal sectional view showing an entrance and exit apparatus for an elevator according to a sixth embodiment of the present invention. In the fifth embodiment, the first light emitting unit 63 and the second light emitting unit 64 are provided on the common support 66, but the first light emitting unit 63 and the second light emitting unit 64 are separately provided. It may be provided on the support of That is, in the drawing, the first support 67 and the second support 68 disposed below the first support 67 are provided at the door closing end of the door 4 of one car. It is fixed. The first support 67 is provided with a first light emitting unit 63, a lens 18, an imaging position detecting unit 19, and a processing unit 36. A second light emitting unit 64 is provided on the second support 68. The other configuration is the same as that of the fifth embodiment.

Also in this case, the entire detection area can be expanded by securing a plurality of detection areas. In addition, the cost can be reduced by sharing the lens 18 and the imaging position detection unit 19.

Embodiment 7

FIG. 7 is a front view showing an elevator entrance and exit apparatus according to a seventh embodiment of the present invention. In the sixth embodiment, the forces by which the first support 67 and the second support 68 are fixed to the common car door 4 The first support 67 and the second Supports 68 may be fixed respectively. That is, in the drawing, the first support 67 is fixed to the door closing side end of the door 4 of one car, and the second support is fixed to the door closing side end of the door 4 of the other car. 68 is fixed. The first support 67 and the second support 68 are disposed at substantially the same height from the floor surface of the landing 8 respectively. The first support 67 is provided with a first light emitting unit 63, a lens 18, an imaging position detecting unit 19 and a processing unit 36. A second light emitting unit 64 is provided on the second support 68.

The detection device 61 is capable of detecting an object to be detected which is disposed in each of a right width area and a left width area which are set side by side with respect to the entrance direction of the entrance 9 of the elevator. In addition, the detection device 61 detects the detection target disposed in the right width region when the door opening / closing control device 65 is in the first control mode (when only the first light emitting unit 63 emits light) When the door opening / closing control device 65 is in the second control mode (when only the second light emitting unit 64 emits light), the detection target placed in the left width area is detected. ing. That is, the detection area of the detection device 61 with respect to the frontage direction of the entrance 9 of the elevator is that when the door open / close control device 65 is in the first control mode, the door open / close control device 65 is in the second control mode. It is different from each other when being done. In this example, the detection subject is a bed 33.

Here, since the second light emitting portion 64 and the lens 18 are respectively provided in the doors 4 of different cars, the position of the second light emitting portion 64 with respect to the lens 18 is the opening and closing of the entrance 9 of the elevator. It changes according to the operation. Therefore, when the measurement light 15b from the second light emitting unit 64 is reflected by the bed 33, even if the bed 33 is stationary, the position of the image forming point of the reflected light 17b is between the doors 4 of each mirror. It changes according to the interval. From this, in this example, the distance between the doors 4 of each car is measured by an inter-door distance measuring device (not shown), and the distance between the doors is taken as correction information using the information on the distance between the doors 4 of each car. It is transmitted from the measuring device to the computing unit 20.

That is, when the door opening / closing control device 65 is in the first control mode, the computing unit 20 detects the first light emitting unit 63 and the detected light based on the position information from the imaging position detecting unit 19. When the door opening / closing control device 65 is in the second control mode, the distance between the object and the body is calculated, and the positional information from the imaging position detection unit 19 and the correction information from the inter-door distance measuring device The distance between the second light emitting unit 64 and the object to be detected is calculated based on each of them.

When the door opening / closing control device 65 is in the first control mode, the determination unit 21 determines the presence or absence of the bed 33 in the right width region based on the calculation value obtained by the calculation unit 20. When the door opening / closing control device 65 is in the second control mode, the presence or absence of the bed 33 in the left width region is determined based on the calculation value obtained by the calculation unit 20.

The door opening / closing control device 65 controls opening / closing of the entrance 9 of the elevator based on the determination information from the determination unit 21. That is, when the bed 33 is disposed within the right width area when the door control unit 65 is in the first control mode, and when the bed 33 is in the second control mode, the bed 33 is operated. When arranged in the left width area, the door drive unit is controlled so as to reverse the elevator door 10 in the door closing operation in the door opening direction. The other configuration is the same as that of the fifth embodiment.

In the entrance device of such an elevator, a plurality of light emitting units 63, 64 are respectively provided in the door 4 different from each other, and the door opening / closing control device 65 causes the light emitting units 63, 64 to selectively emit light. When light from each light emitting portion 63, 64 is reflected by the detection subject, the imaging of the reflected light is performed by the common lens 18, and the detection of the position of the imaging point of the reflected light is common. This is performed by the imaging position detection unit 19 of the second embodiment, so that light emission from each of the light emission units 63 and 64 secures a plurality of detection areas in the opening / closing direction of the entrance 9 of the elevator. The detection area can be expanded. Further, the number of lenses 18 and the imaging position detectors 19 can be reduced, and the cost can be reduced.

In the fifth to seventh embodiments, the number of light emitting units may be two, and the number of light emitting units may be three or more. This makes it possible to increase the number of detection areas and to further expand the overall detection area. In addition, the detection area can be further subdivided, and the subject can be detected more reliably.

In each of the above-described embodiments, the detection device may be provided in the door 5 of the force landing provided in the door 4 of the car.

Further, in each of the above embodiments, the measurement unit and the processing unit of the detection device may be integrated to separate the! /, 1S processing unit from the measurement unit. Also, only the measuring unit is provided on the car door 4

The processing unit may be mounted on the door opening / closing control device.

Claims

The scope of the claims

[1] A light emitting unit, an imaging optical system for forming an image of the reflected light when the light of the light emitting unit is reflected by the detection object, and a signal according to the position of the image forming point of the reflected light And an imaging position detection unit for generating an image, and a measurement unit provided in an elevator door for opening and closing an elevator entrance, and

A processing unit that determines the presence or absence of the detected object in a predetermined detection area based on the signal of the imaging position detection unit force.

An entrance and exit apparatus for an elevator, comprising:

[2] The elevator door is provided with a plurality of the measurement units arranged in the vertical direction

The entrance device of the elevator according to claim 1, wherein V.

[3] The entrance device of the elevator according to claim 1 or 2, wherein the light from the light emitting part is irradiated downward.

[4] The entrance and exit apparatus for an elevator according to any one of claims 1 to 3, wherein the measurement unit is mounted on a safety shoe provided at a door closing side end of the elevator door. .

[5] A plurality of the light emitting units are provided to the common elevator door,

The apparatus further comprises a control device that causes each of the light emitting units to emit light selectively,

When light of each of the light emitting units is reflected by the detection target, the common imaging optical system forms an image of the reflected light, and the common imaging position detection unit forms an imaging point of the reflected light. The gateway apparatus for an elevator according to claim 1, wherein a signal corresponding to the position of the sensor is generated! /.

[6] The entrance of the elevator is opened and closed by a plurality of the elevator doors,

A plurality of the light emitting units are respectively provided on the different elevator doors, and further comprising a control device that causes each of the light emitting units to selectively emit light;

When light of each of the light emitting units is reflected by the detection target, the common imaging optical system forms an image of the reflected light, and the common imaging position detection unit forms an imaging point of the reflected light. To generate a signal according to the position of the object! /, The method according to claim 1, characterized in that The entrance device of the reflector.