JP4994841B2 - Elevator doorway equipment - Google Patents

Description

  The present invention relates to an elevator entrance / exit device for detecting passengers at a hall, for example.

  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 has approached an elevator door that can be opened and closed. The transmitter emits infrared light to the landing side. The receiver receives reflected light when infrared light from the transmitter is reflected by passengers at the hall. 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 / exit of the elevator is detected (see Patent Document 1).

Japanese Patent No. 3088936

  However, if the reflectance of the passenger is low due to clothes, for example, even if the passenger approaches the elevator entrance, the amount of reflected light from the passenger is insufficient, and the approach of the passenger to the elevator entrance is detected. May not be possible.

  Further, since the receiver receives not only the reflected light from the passenger but also disturbance light, the amount of light received by the receiver increases due to the disturbance light, which may cause malfunction.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator entrance / exit device that can detect a detection target more reliably.

An elevator doorway apparatus according to the present invention includes a light emitting unit that irradiates light to a landing side, an imaging optical system that forms an image of reflected light when light from the light emitting unit is reflected by a detection object, and a reflection An image forming position detecting unit that generates a signal corresponding to the position of the light image forming point, and a measurement unit provided on an elevator door that opens and closes the entrance of the elevator, and a signal from the image forming position detecting unit In addition, a processing unit that determines the presence or absence of a detection object in a predetermined detection area set at the landing is provided , and light from the light emitting unit is emitted downward.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a longitudinal sectional view showing an elevator doorway apparatus according to Embodiment 1 of the present invention. In the figure, a car 2 that is raised and lowered in a hoistway 1 is mounted with a pair of car doors 4 that open and close a car doorway 3. The doors 4 of each car are reciprocated in opposite directions along the frontage direction of the car doorway 3. The car entrance 3 is opened and closed by the reciprocation of each car. Each car door 4 is reciprocated by a door driving device (not shown) mounted on the car 1.

  On each floor, a landing doorway 6 that is opened and closed by a pair of landing doors 5 is provided. Each landing door 5 can be engaged with each car door 4 by an engaging device (not shown) when the car 2 is landed on each floor. In addition, the doors 5 of each landing can reciprocate together with the doors 4 of each car by engagement with the doors 4 of the cars. Thereby, the door 5 of each landing is reciprocated in the frontage direction of the landing entrance 6. The hall entrance 6 is opened and closed by the reciprocation of the door 5 of each hall.

  The elevator entrance 9 for communicating the inside of the car 2 and the hall 8 with each other when the car 2 is landed has a car entrance 3 and a hall entrance 6. An elevator door 10 for opening and closing the elevator door 9 includes a car door 4 and a landing door 5.

  A detection device (distance sensor) 12 capable of detecting a passenger 11 as a detected body in a non-contact manner is provided at the door closing side end of one car door 4. The detection device 12 can detect the passenger 11 when the passenger 11 is positioned within a predetermined detection area. The predetermined detection area is set at the landing 8.

  The detection device 12 includes a measurement unit 13 for measuring the distance to the passenger 11 and a processing unit 14 for determining the presence or absence of the passenger 11 in a predetermined detection area based on information from the measurement unit 13. Have.

  The measurement unit 13 is, for example, a light emitting unit 16 that is a light emitting element that irradiates light such as infrared light or visible light to the hall 8 side as measurement light 15, and reflected light when light from the light emitting unit 16 is reflected by the passenger 11. 17 includes a lens 18 that is an imaging optical system for imaging 17 and an imaging position detection unit 19 that is disposed at a position where the reflected light 17 is imaged by the lens 18. Examples of the light emitting unit 16 include a light emitting diode, a semiconductor laser, or an irradiation device that combines a light emitting diode (or semiconductor laser) and a lens. Examples of the imaging position detection unit 19 include a position detection element, an image pickup element, a photodiode array, and the like. The measurement light 15 is always emitted from the light emitting unit 16 to the landing 8 side. Further, the irradiation direction of the measurement light 15 is set to be almost 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 image formation point of the reflected light 17 in the image formation position detection unit 19 corresponds to the position of the passenger 11 with respect to the measurement unit 13. The image formation position detector 19 detects the position of the image formation point by the lens 18 of the reflected light 17 and generates a signal (detection signal) corresponding to the position of the image formation point. In other words, the imaging position detection unit 19 generates a detection signal corresponding to the position of the passenger 11 with respect to the measurement unit 13. Further, the imaging position detection unit 19 is electrically connected to the processing unit 14. A detection signal generated by the imaging position detection unit 19 is output to the processing unit 14.

  A 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 a calculation value based on the input position information, and a predetermined detection based on the calculation value obtained by the calculation unit 20. It has the determination part 21 which determines the presence or absence of the passenger 11 in an area | region.

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

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

  When the door opening / closing control device receives determination information from the determination unit 21 that the position of the passenger 11 is within a predetermined detection area, the door drive is performed so as to reverse the elevator door 10 during the door closing operation in the door opening direction. Control the device. Further, the door opening / closing control device controls the door driving device so that the elevator door 10 performs a normal opening / closing operation when receiving the determination information from the determination unit 21 that the position of the passenger 11 is outside the predetermined detection area. To do.

  Next, the operation will be described. From the light emitting unit 16, the measurement light 15 is constantly irradiated to the landing 8 side. When the passenger 11 approaches the elevator entrance 9 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 image formation point of the reflected light 17 at this time is a position corresponding to the position of the passenger 11 with respect to the light emitting unit 16.

  Thereafter, the position of the image formation point of the reflected light 17 is detected by the image formation position detection unit 19, and a detection signal corresponding to the position of the image formation point is output from the image formation position detection unit 19 to the calculation unit 20 as position information. The 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 calculated value is output from the calculation 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 or not the calculated value is equal to or less than a set value. The determination unit 21 determines that the position of the passenger 11 is within a predetermined detection area when the calculated value is equal to or less than the set value, and the position of the passenger 11 is determined when the calculated value exceeds the set value. Is determined to be outside the detection region.

  Thereafter, 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 the doorway 9 of the elevator is opened and closed.

  In such an elevator doorway apparatus, the reflected light 17 from the passenger 11 is imaged by the lens 18, and the imaging position detection unit 19 generates a detection signal corresponding to the position of the imaging point of the reflected light 17. Therefore, the position of the passenger 11 can be detected based on the position of the imaging point of the reflected light 17 regardless of the amount of the reflected light 17. Thereby, even if it is a case where the reflectance of the passenger 11 is low and the light quantity of the reflected light 17 received from the passenger 11 is small, the passenger 11 which is a to-be-detected body can be detected more reliably. The lens 18 may be disposed below the light emitting unit 16.

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

  The upper detection device 31 can detect a detection object arranged in a high-level region located at a predetermined height from the floor surface of the hall 8. In addition, the lower detection device 32 can detect a detection object disposed in a lower region located below the higher region. That is, the detection area in the height direction is different between the upper detection device 31 and the lower detection device 32. In this example, the detected object arranged in the high level area is a bed 33 and the detected object arranged in the low level area is a carriage 34.

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

  Each configuration of the measurement unit 35 and the measurement unit 37 is substantially the same as the configuration of the measurement unit 13 of the first embodiment, but only the irradiation direction of the measurement light from each light emitting unit 16 is different from that of the first embodiment. Yes. That is, the measurement light 15 a is irradiated downward from the light emitting unit 16 of the measurement unit 35, and the measurement light 15 b is irradiated downward from the light emitting unit 16 of the measurement unit 37.

  On the imaging position detection unit 19 of the measurement unit 35, the reflected light 17a when the measurement light 15a is reflected by the bed 33 is imaged. 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 is detected as the position information. The data is output from the unit 19 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 upper detection device based on the calculated value obtained by the calculating unit 20. And a determination unit 21 that determines the presence / absence of the bed 33 in the detection region 31.

  The determination unit 21 of the processing unit 36 determines that the bed 33 is located within a predetermined area when the input calculated value is equal to or less than a preset set value, and the calculated value exceeds the set value. The bed 33 is determined to be located outside a predetermined detection area. The determination unit 21 of the processing unit 36 outputs high-level determination information about the presence / absence of detection of the bed 33 determined based on information from the calculation unit 20.

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

  The processing unit 38 calculates the distance between the light emitting unit 16 and the carriage 34 based on the input position information, and the lower detection device based on the calculated value obtained by the calculation unit 20. And a determination unit 21 that determines the presence or absence of the carriage 34 in the 32 detection areas.

  The determination unit 21 of the processing unit 38 determines that the carriage 34 is located within a predetermined area when the input calculation value is equal to or less than a preset set value, and the calculation value exceeds the set value. It is determined that the carriage 34 is located outside the predetermined detection area. The determination unit 21 of the processing unit 38 outputs low-level determination information about the presence or absence of the carriage 34 determined based on information from the calculation unit 20.

  Each determination part 21 of the process part 36 and the process part 38 is electrically connected to the door opening / closing control apparatus. The door opening / closing control device controls the opening / closing of the elevator entrance / exit 9 based on the high level determination information from the processing unit 36 and the low level determination 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 detection device 31, only when the carriage 34 is detected by the lower detection device 32, or each of the bed 33 and the carriage 34 is detected by the upper detection device 31 and When detected by the lower detection device 32, the door driving device is controlled so as to reverse the elevator door 10 during the door closing operation in the door opening direction. Other configurations are the same as those in the first embodiment.

  Next, the operation will be described. 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 emitted from the light emission unit 16 of the lower detection device 32 downward to the landing 8 side.

  When the bed 33 approaches the elevator entrance 9 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 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.

  Thereafter, in the measurement unit 35, the position of the imaging point of the reflected light 17 a 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 17 a is sent from the imaging position detection unit 19. The data is output to the processing unit 36. Thereafter, in the processing unit 36, the detection signal from the imaging position detection unit 19 of the measurement unit 35 is processed in the same manner as the processing unit 14 of the first embodiment. As a result, high-level determination information about whether or not the bed 33 is detected is output from the processing unit 36 to the door opening / closing control device.

  When the carriage 34 approaches the elevator entrance 9 and the measurement light 15 b is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detection section 19 of the measurement section 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 unit 16 of the lower detection device 32.

  Thereafter, in the measurement unit 37, the position of the image forming point of the reflected light 17b is detected by the image forming position detecting unit 19, and a detection signal corresponding to the position of the image forming point of the reflected light 17b is sent from the image forming position detecting unit 19. The data is output to the processing unit 38. Thereafter, the processing unit 38 processes the detection signal from the imaging position detection unit 19 of the measurement unit 37 in the same manner as the processing unit 14 of the first embodiment. Thereby, the low level determination information about the presence / absence of detection of the carriage 34 is output from the processing unit 38 to the door opening / closing control device.

  Thereafter, when the high-level determination information and the low-level determination information are input to the door opening / closing control device, the door driving device is controlled by the door opening / closing control device based on the high-level determination information and the low-level determination information, and the opening / closing of the elevator door 9 is performed. Done. That is, when at least one of the bed 33 and the carriage 34 is detected, the elevator door 10 during 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, even if the height of the detected object is significantly different, such as the bed 33 and the carriage 34. Each of the bed 33 and the carriage 34 can be detected more reliably.

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

Embodiment 3 FIG.
FIG. 3 is a longitudinal sectional view showing an elevator detection apparatus according to Embodiment 3 of the present invention. In the figure, a detection device 41 is provided at the upper part of the door closing side end of one car door 4. 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 measurement unit 35 can irradiate the measurement light 15 so as to pass through the low detection region after passing through the high detection region. Accordingly, the detection device 41 is detected in each of the high level detection region located at the height between the floor surface of the hall 8 and the light emitting unit 16 and the low level detection region located below the high level detection region. The body can be detected.

  When the bed 33 which is the detection object is located in the high level detection region, the measurement light 15 is shielded by the bed 33 and does not reach the low level detection region. The measurement light 15 from the light emitting unit 16 of the measurement unit 35 is reflected as reflected light 17a by the bed 33 when the bed 33 is in the high level detection region, and the carriage 34 that is the detection object is only in the low level detection region. At some point, the light passes through the high detection area and is reflected by the carriage 34 as reflected light 17b. 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 outputs a detection signal corresponding to the positions of the imaging points 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 calculates based on position information from the imaging position detection unit 19 to obtain a calculation value. Based on the calculated value obtained by the calculation unit 20, the determination unit 21 of the processing unit 36 determines the detection target (in this example, either the bed 33 or the carriage 34) in the high level detection region and the low level detection region. The presence / absence is determined, and determination information about the presence / absence of detection of the detected object is output to the door opening / closing control device. Other configurations are the same as those of the second embodiment.

  Next, the operation will be described. The measurement light 15 is constantly emitted downward from the landing 8 side from the light emitting unit 16 of the detection device 41.

  When the bed 33 approaches the elevator entrance 9 and the measurement light 15 is reflected by the bed 33, the reflected light 17 a is imaged on the imaging position detection unit 19 of the measurement unit 35 by the lens 18. When the carriage 34 approaches the elevator entrance 9 and the measurement light 15 is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detection section 19 of the measurement section 35 by the lens 18. Thereafter, a detection signal corresponding to the position of the imaging point is output from the imaging position detection unit 19 of the measurement unit 35 to the processing unit 36 as position information. The subsequent operation is the same as in the first embodiment.

  In such an elevator entrance / exit device, the measurement light 15 from the light emitting unit 16 is irradiated downward, so that the height of the detected object is significantly different, such as the bed 33 and the carriage 34. Even so, 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.

  In addition, since the bed 33 in the high detection area and the carriage 34 in the low detection area can be detected by the common detection device 41, the number of the detection devices 41 can be reduced, and the manufacturing cost can be reduced.

Embodiment 4 FIG.
FIG. 4 is a longitudinal sectional view showing an elevator doorway apparatus according to Embodiment 4 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 each car door 4. The safety shoe 51 incorporates a switch (not shown) electrically connected to the door opening / closing control device. The switch is operated when, for example, a passenger 11 or the like which is a detection object hits the safety shoe 51. When the switch is operated, an operation signal is output from the switch to the door opening / closing control device. The door opening / closing control device controls the door driving device so as to reverse the elevator door 10 in the door opening direction in response to the input of the operation signal.

  In the safety shoe 51, a detection device 12 having the same configuration as that of the first embodiment is mounted. A 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. The transparent plate is made of plastic or glass. Other configurations and operations are the same as those in the first embodiment.

  In such an elevator entrance / exit device, since the detection device 12 is mounted in the safety shoe 51, in addition to the detection of the passenger 11 by the detection device 12, the passenger 11 is more reliably detected by the detection of the safety shoe 51. be able to.

Embodiment 5 FIG.
5 is a longitudinal sectional view showing an elevator doorway apparatus according to Embodiment 5 of the present invention. In the figure, a detection device 61 is provided at the door closing side end of one car door 4. The detection device 61 includes a measurement unit 62 and a processing unit 36 that is electrically connected to the measurement unit 62. 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 first light emitting unit 63 and a second light emitting unit 64 that are a plurality of light emitting units, a lens 18, and an imaging position detection 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. In addition, the first and second light emitting units 63 and 64 use the same light emitting elements as the light emitting unit 16 in the first embodiment, respectively. Further, 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 elevator door 9. The first light emitting unit 63, the second light emitting unit 64, and the processing unit 36 are electrically connected to the door opening / closing control device 65, respectively. The door opening / closing control device 65 selectively causes the first and second light emitting units 63 and 64 to emit light. That is, the control of the door opening / closing control device 65 includes the first control mode in which the first light emitting unit 63 emits light and the second light emitting unit 64 stops emitting light, and the second light emitting unit 64 emits light. In addition, it is possible to switch between the 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 measurement light 15a is emitted from the first light emitting unit 63 to the landing 8 side. When the second light emitting unit 64 emits light, the measurement light 15b is emitted from the second light emitting unit 64 to the landing 8 side.

  The detection device 61 is capable of detecting objects to be detected that are arranged in a high area located at a predetermined height from the floor surface of the hall 8 and a low area located below the high area. Further, the detection device 61 detects the detection object arranged in the high-order region when the door opening / closing control device 65 is in the first control mode, and the door opening / closing control device 65 is in the second control mode. In this case, the detection object arranged in the lower region is detected. That is, the detection region in the height direction of the detection device 61 includes 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. So they are different from each other. In this example, the detected object arranged in the high level area is a bed 33 and the detected object arranged in the low level area is a carriage 34.

  Further, the reflected light 17a when the measurement light 15a is reflected by the detection target and the reflected light 17b when the measurement light 15b is reflected by the detection target are imaged by the common lens 18. It has become. Furthermore, the position of the image forming point of the reflected light 17a and the position of the image forming point of the reflected light 17b are detected by a common image forming position detecting unit 19. The imaging position detector 19 outputs a signal (detection signal) corresponding to the positions of the imaging points of the reflected light 17a and the reflected light 17b to the processing unit 36 as position information.

  The processing unit 36 includes a calculation unit 20 and a determination unit 21. The computing unit 20 computes the distance between the first light emitting unit 63 and the detected object based on the input position information when the door opening / closing control device 65 is in the first control mode. When the door opening / closing control device 65 is in the second control mode, the distance between the second light emitting unit 64 and the detected object is calculated based on the input position information. It has become.

  When the door opening / closing control device 65 is in the first control mode, the determination unit 21 determines the presence / absence of the bed (detected body) 33 in the high-order 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 / absence of the carriage (detected body) 34 in the lower region is determined based on the calculated value obtained by the calculating unit 20. It has become. In addition, the determination unit 21 outputs determination information about the presence or absence of detection of the detection target determined based on information from the calculation unit 20 to the door opening / closing control device 65.

  The door opening / closing control device 65 controls the opening / closing of the entrance / exit 9 of the elevator based on the determination information from the determination unit 21. In other words, the door opening / closing control device 65 is configured such that when the bed 33 is disposed in the high region when the first control mode is set, and when the carriage 34 is within the low region when the second control mode is set. The door driving device is controlled so that the elevator door 10 during the door closing operation is reversed in the door opening direction. Other configurations are the same as those in 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 from the first light emitting unit 63 to the landing 8 side. Is irradiated.

  When the bed 33 approaches the elevator entrance 9 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. 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 first light emitting unit 63.

  Thereafter, the imaging position detection unit 19 detects the position of the imaging point of the reflected light 17a, and a detection signal corresponding to the position of the imaging point of the reflected light 17a is output from the imaging position detection unit 19 to the processing unit 36. Is done. Thereafter, the processing unit 36 processes the detection signal from the imaging position detection unit 19 in the same manner as in the first embodiment. Thereby, determination information about the presence or absence of the bed 33 in the high level area (information about whether 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, determination information from the processing unit 36 is input to the door opening / closing control device 65, and the door driving device is controlled by the door opening / closing control device 65 based on the determination information. Thereby, the opening / closing operation of the elevator entrance / exit 9 is controlled, and when it is detected that the bed 33 is in the high region, the elevator door 10 during 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 under the control of the door opening / closing control device 65, and the measurement light 15 b is landing from the second light emitting unit 64. Irradiated to the 8 side.

  When the carriage 34 approaches the elevator entrance 9 and the measurement light 15 b is reflected by the carriage 34, the reflected light 17 b is imaged on the imaging position detector 19 by the lens 18. At this time, the position of the image formation point of the reflected light 17 b is a position corresponding 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 output from the imaging position detection unit 19 to the processing unit 36. Is done. Thereafter, the processing unit 36 processes the detection signal from the imaging position detection unit 19 in the same manner as in the first embodiment. As a result, determination information about the presence or absence of the carriage 34 in the lower region (information about whether the carriage 34 is in the lower region) is output from the processing unit 36 to the door opening / closing control device 65.

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

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

Embodiment 6 FIG.
6 is a longitudinal sectional view showing an elevator doorway apparatus according to Embodiment 6 of the present invention. In the fifth embodiment, the first light emitting unit 63 and the second light emitting unit 64 are provided on a 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. That is, in the figure, a first support 67 and a second support 68 disposed below the first support 67 are fixed to the door closing side end of one car door 4. Has been. The first support 67 is provided with a first light emitting unit 63, a lens 18, an imaging position detection unit 19, and a processing unit 36. A second light emitting unit 64 is provided on the second support 68. Other configurations are the same as those of the fifth embodiment.

  Even in this case, the entire detection area can be expanded by securing a plurality of detection areas. Further, the cost can be reduced by using the lens 18 and the imaging position detector 19 in common.

Embodiment 7 FIG.
FIG. 7 is a front view showing an elevator doorway apparatus according to Embodiment 7 of the present invention. In the sixth embodiment, the first support 67 and the second support 68 are fixed to the common car door 4, but the first support 67 and the second support 67 are connected to different car doors 4. Each support 68 may be fixed. That is, in the figure, a first support 67 is fixed to the door closing side end of one car door 4, and a second support is attached to the door closing side end of the other car door 4. 68 is fixed. The first support body 67 and the second support body 68 are arranged at substantially the same height from the floor surface of the landing 8.

  The first support 67 is provided with a first light emitting unit 63, a lens 18, an imaging position detection 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 objects to be detected that are arranged in each of the right width region and the left width region that are set side by side in the opening direction of the elevator entrance 9. Further, the detection device 61 detects the detection object arranged 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 detected object arranged in the left width region is detected. Yes. That is, the detection area of the detection device 61 in the direction of the front door of the elevator 9 is set so that the door opening / closing control device 65 is in the first control mode and the door opening / closing control device 65 is in the second control mode. Are different from each other. In this example, the detected object is a bed 33.

  Here, since the second light emitting unit 64 and the lens 18 are respectively provided in different car doors 4, the position of the second light emitting unit 64 relative to the lens 18 is changed by the opening / closing operation of the elevator door 9. To do. Therefore, when the measurement light 15b from the second light emitting unit 64 is reflected by the bed 33, the position of the image point of the reflected light 17b is the interval between the doors 4 of each car, even if the bed 33 is stationary. It changes according to. Therefore, in this example, the distance between the doors 4 of each car is measured by a door distance measuring device (not shown), and the information on the distance between the doors 4 of each car is used as correction information as the door distance measuring device. To the arithmetic unit 20.

  That is, when the door opening / closing control device 65 is in the first control mode, the calculation unit 20 determines whether the first light emitting unit 63 and the detected object are based on the position information from the imaging position detection unit 19. And calculating the distance between the two, based on the position information from the imaging position detector 19 and the correction information from the door-to-door distance measuring device when the door opening / closing control device 65 is in the second control mode. Thus, the distance between the second light emitting unit 64 and the detected object is calculated and obtained.

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

  The door opening / closing control device 65 controls the opening / closing of the entrance / exit 9 of the elevator based on the determination information from the determination unit 21. That is, the door opening / closing control device 65 is configured such that when the bed 33 is disposed in the right width region when the first control mode is set, and when the bed 33 is set to the left width when the second control mode is set, When arranged in the region, the door drive device is controlled so that the elevator door 10 during the door closing operation is reversed in the door opening direction. Other configurations are the same as those of the fifth embodiment.

  In such an elevator entrance / exit device, a plurality of light emitting portions 63, 64 are provided in different car doors 4, respectively, and a door opening / closing control device 65 selectively causes each light emitting portion 63, 64 to emit light. When the light from the light emitting units 63 and 64 is reflected by the detection object, the reflected light is imaged by the common lens 18 and the position of the image point of the reflected light is detected by the common imaging position. Since detection is performed by the detection unit 19, a plurality of detection regions in the front-and-rear direction of the elevator entrance / exit 9 can be secured by light emission of the light-emitting units 63 and 64, and the detection region can be expanded. In addition, the number of lenses 18 and 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 is two, but the number of light emitting units may be three or more. Thereby, the number of detection areas can be increased, and the entire detection area can be further expanded. Further, the detection area can be further subdivided, and the detection target can be detected more reliably.

  Moreover, in each said embodiment, although the detection apparatus is provided in the door 4 of the cage | basket, you may provide a detection apparatus in the door 5 of a landing.

  In each of the above embodiments, the measurement unit and the processing unit of the detection apparatus are integrated, but the processing unit may be separated from the measurement unit. Alternatively, only the measurement unit may be provided in the car door 4 and the processing unit may be mounted on the door opening / closing control device.

1 is a longitudinal sectional view showing an elevator doorway apparatus according to Embodiment 1 of the present invention. It is a longitudinal cross-sectional view which shows the elevator doorway apparatus by Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows the elevator doorway apparatus by Embodiment 3 of this invention. It is a longitudinal cross-sectional view which shows the elevator doorway apparatus by Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows the elevator doorway apparatus by Embodiment 5 of this invention. It is a longitudinal cross-sectional view which shows the doorway apparatus of the elevator by Embodiment 6 of this invention. It is a front view which shows the doorway apparatus of the elevator by Embodiment 7 of this invention.

Claims (5)

A light emitting unit for irradiating light to the landing side, an imaging optical system for forming an image of reflected light when the light from the light emitting unit is reflected by the detection object, and the position of the imaging point of the reflected light An imaging position detection unit that generates a signal corresponding to the measurement position provided on the elevator door that opens and closes the entrance of the elevator, and is set in the landing based on the signal from the imaging position detection unit A processing unit for determining the presence or absence of the detected object in the predetermined detection area ,
The elevator doorway device characterized in that light from the light emitting section is irradiated downward .   The elevator doorway apparatus according to claim 1, wherein the elevator door is provided with a plurality of the measurement units arranged in the vertical direction. The elevator entrance / exit apparatus according to claim 1 or 2 , wherein the measurement unit is mounted on a safety shoe provided at a door closing side end of the elevator door. A plurality of the light emitting units are provided in the common elevator door,
A control device for selectively emitting light from each of the light emitting units;
When light from each of the light emitting units is reflected by the detected object, 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 elevator doorway apparatus according to claim 1, wherein a signal corresponding to the position of the elevator is generated. The elevator entrance 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,
A control device for selectively emitting light from each of the light emitting units;
When light from each of the light emitting units is reflected by the detected object, 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 elevator doorway apparatus according to claim 1, wherein a signal corresponding to the position of the elevator is generated.

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