JPH09240969A - Control device for opening/closing elevator door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operating efficiency to the utmost, in the range of not spoiling safety against users. SOLUTION: A set door opening time timer counts for 10 seconds from a door full opening time, and operates to close the door at completing the counting. Hereat a car reaches a target floor, the door fully opens (time t1 -t2 ), and the ray of a photoelectric tube is obstructed for 1 second (time t2 -t3 ) because of getting-in of a user. An obstacle non-detection timer begins to count from a build-up (time t3 ) for 2 seconds, after detecting rising-up (time t3 ) of photoelectric tube pulse. When an obstacle is not detected for the 2 seconds and counting is completed (time t4 ), even though 10 seconds does not elapse from the full opening time (time t2 ), the door closing operation begins so as to fully close the door (time t5 ). Compared with a customary door fully close time (time t7 ), the time is shortened by 7 seconds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing control device for controlling opening / closing operations of an elevator door, and more particularly to a non-contact type elevator door opening / closing control device incorporating a device for detecting an obstacle. It is a thing.

[0002]

2. Description of the Related Art Most modern elevators, except those used in a specific building such as a department store, are automatically operated unmanned. It is important to ensure the safety of users and to maintain the operation efficiency above a certain level, in order to manage the operation of such an elevator. Involved in.

Regarding maintenance of operating efficiency,
When the set door open time elapses, a function to close the fully open door is added so that the door will automatically close even if there are no users in the car.

On the other hand, in terms of ensuring the safety of users,
Various obstacle detection devices are provided in the door opening / closing control device as a safety device in order to prevent the user or luggage carried by the user from being caught or collided with the door being closed. The detection device used in the door opening / closing control device is roughly classified into a contact type and a non-contact type. As a typical example of the former, a movable plate is attached to the tip of the door panel, and when an obstacle touches the plate and the plate moves, the interlocking switch is turned on and the door is inverted to avoid danger. There is something I did. Also, a button is provided in the elevator car room, and a function is added to invert the closed door by operating this button, but this is also because humans directly operate the button by hand. It is classified as a contact type. In addition, in this specification, an "obstacle" shall include both a person and an object.

On the other hand, as a typical example of the latter, a light emitting part and a light receiving part using visible light (mostly invisible light in recent years) are installed at both left and right ends of a doorway, and when the obstacle blocks the light beam. A device that performs detection, a device that emits ultrasonic waves and detects obstacles by its reflected wave, and also detects the electric capacitance between the door panel and the obstacle, and the door closes and the obstacle There is a device etc. which detects only when a certain distance or less is approached.

With the exception of a very small number of conventional models, the contact type obstacle detecting device is made to function under any conditions. When an obstacle is detected during the door closing operation,
The door was once fully opened. In addition, the non-contact type obstacle detection device should not be operated when the car is stopped on the same floor for a certain period of time and the door is repeatedly turned over, or when it is used for fire fighting activities in an emergency such as a fire. However,
When an obstacle was detected at any other time, the door was once fully opened as in the contact type.

[0007]

There are the following problems in terms of maintaining the operating efficiency of the elevator. That is, for example, when the elevator arrives at the target floor, the door will open and the user will get on and off, but at least the number of users getting on and off at that time is the same for the time when the door is open. Therefore, when there are few users getting on and off from the elevator on the floor, other users often push the door close button in the elevator car room to rush the elevator operation. Also, when the elevator floor is specified by mischief or a mistake, the door remains open for a preset time even when there is no user. Therefore, even if the user on the other floor presses the call button, the call is not answered quickly, and the user has to wait a long time. In this way, in the past, since the door is always fully opened for a certain period of time even when there is no user getting on or off or when the user has already got on and off,
There were some unfavorable points regarding operating efficiency. Further, the fact that the user operates the door close button hinders the improvement of the service.

On the other hand, in order to ensure the safety of the user, this should be given the highest priority, but it is desirable to improve the operation efficiency as much as possible within the range where the safety is not impaired. However, in the conventional door opening / closing control, if an obstacle is detected during the door closing operation, a uniform control is performed in which the closing door is once fully opened and then the door closing operation is performed again. I was just there. However, overseas, some models are used to perform the door closing operation again without fully opening the door even when an obstacle is detected during the door closing operation. However, this is merely control for opening the door to a predetermined position before the fully open position, and the control remains the same.

Even if such uniform control is performed on the opening and closing of the door, it can be said that such a large amount of time is not lost if it is considered once or several times. However, when such a uniform door opening / closing control is performed for a long time, the loss time accumulated by this is a time that cannot be ignored in terms of improving operating efficiency.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an elevator opening / closing control device capable of improving operating efficiency as much as possible within a range not impairing safety for users. I am trying.

[0011]

As a means for solving the above-mentioned problems, the invention according to claim 1 is provided with contact type and non-contact type obstacle detecting devices for detecting obstacles at the time of opening and closing a door, and is fully open. When the set door open time of the door has passed, if the door open / close control device causes the door to perform the door close operation, if the obstacle of the non-contact obstacle detection device is not detected for a predetermined time, Even before the set door opening time has elapsed, the door being fully opened is allowed to perform the door closing operation.

According to a second aspect of the present invention, in an elevator door opening / closing control device provided with a contact type and a non-contact type obstacle detecting device for detecting an obstacle at the time of opening and closing the door, the non-contact during the door closing operation of the door. When the type obstacle detection device detects an obstacle, the door is reversed for a predetermined distance from the obstacle detection position, the door is stopped at the reversed position for a predetermined time, and then the door is closed again. It is characterized by being performed.

According to a third aspect of the present invention, in the second aspect of the invention, when the non-contact type obstacle detecting device detects an obstacle again during the door closing operation of the door again, it is the same as in the previous reversal. It is characterized in that the door is turned over again by a distance increased by a predetermined amount from the predetermined distance.

According to a fourth aspect of the present invention, in the second or third aspect of the invention, when the door is again closed, the door reaches the obstacle detection position at the time of the previous door closing operation. The door reversing operation based on the obstacle detection of the non-contact type obstacle detection device is prohibited.

According to a fifth aspect of the present invention, in the second or third aspect of the invention, when the door is to be closed again, the door is closed further than the obstacle detection position at the time of the previous door closing operation. The door reversing operation based on the obstacle detection of the non-contact type obstacle detection device is prohibited until the vehicle reaches a position advanced by a predetermined distance in the direction.

According to a sixth aspect of the present invention, in the invention according to any one of the second to fifth aspects, the non-contact type obstacle detection device is attached to a door panel that opens and closes and is within a certain distance from the obstacle. Includes an approaching obstacle detection device that detects the obstacle only when it approaches the vehicle, and only the approaching obstacle detection device of the non-contact type detection devices detects the obstacle during the door closing operation of the door. In this case, the door is allowed to immediately perform the door closing operation again without being stopped at the reverse position for a predetermined time.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing the configuration of the device according to the present invention. In this figure, a pair of doors 1 that open on both sides
Contact detection plates 2a and 2b are attached to a and 1b, and when an obstacle contacts the plates 2a and 2b, the switches 3a and 3b output a contact detection signal to the door opening / closing control circuit 4. Further, a door opening / closing button 5 for opening / closing the doors 1a and 1b by a user's operation is installed in the car room.

A light emitting device 6a and a light receiving device 6b which constitute a phototube detecting device are provided near the entrance / exit of the car room, and the light receiving device 6b is provided when an obstacle blocks the light beam from the light emitting device 6a.
Outputs an obstacle detection signal to the door opening / closing control circuit 4. Capacitive detection devices 7a and 7b are attached to the door panels near the plates 2a and 2b to detect an obstacle by a change in electric capacity when the obstacle approaches, and the detection signal is output to the door opening / closing control circuit. It is designed to output to 4. Reference numeral 8 denotes a laser type door position detecting device for detecting the position of the door 1a, and outputs the detected position signal to the door opening / closing control circuit 4. In the above-described embodiment, the photoelectric tube detection device having the light emitter 6a and the light receiver 6b is used as the non-contact type obstacle detection device, but another type of detection device using ultrasonic waves, infrared rays, lasers or the like is used. It may be that. Further, although the capacitive detection devices 7a and 7b are used as the approaching obstacle detection device, other types of detection devices such as a heat sensing type can be used for this as well.

Next, the operation of the apparatus shown in FIG. 1 will be described.
First, regarding the first embodiment, operations of three typical patterns will be described with reference to FIGS. However, the operating environment is as follows.

(1) The door type is such that the door opens to both sides from the center position of the entrance / exit, and the width of the frontage is 1200 [m
m].

(2) Door opening and closing time is 2 seconds for door opening and 3 for door closing.
Seconds, for convenience, the door movement amount and the door opening / closing time are in a proportional relationship. Therefore, it takes 3 seconds to fully close from the fully open position, and 1. to completely close from the 600 mm position.
It takes 5 seconds, and 1 second is required to fully close from the position of 400 mm. Also, the amount of slippage and the delay time of detection due to the inversion or stop of the door are ignored.

(3) Set the door opening time for fully open doors to 10
Seconds, the door is closed when the user does not get on or off for more than 2 seconds.

FIG. 2 is a time chart showing a pattern in the case where one user gets into the elevator whose door has opened upon reaching the destination floor. In this figure, those car arrives at the destination floor, the door is fully open in 2 seconds time t ₁ ~t _2, was blocking the light of only one second photo cell of the time t ₂ ~t ₃ when the user boarding And

The obstacle non-detection time timer in the door opening / closing control circuit 4 starts counting for 2 seconds from the falling time (time t ₃ ) after detecting the rising (time t ₂ ) of the phototube pulse, and The set door opening time timer also starts counting for 10 seconds from time t ₂ . When the obstacle non-detection time timer finishes counting for 2 seconds (time t ₄ ), the door opening / closing control circuit 4 causes the door to perform the door closing operation and fully closes the door (time t ₅ ). After all, the door position is fully open for 3 seconds from time t _{2 to} t ₄ . The broken line portion in FIG. 2 shows the door position when the conventional device is used, and the door closing operation is started at time t ₆ and is fully closed at time t ₇ . Therefore, it is possible to save the wasted time of 7 seconds time t ₅ ~t _7.

FIG. 3 is a time chart showing a pattern when the elevator arrives at the destination floor despite the absence of a user due to mischief or mistake. When the car arrives at the destination floor (time t ₁ ) and the door is fully opened (time t _1
2 ) The obstacle non-detection time timer starts counting for 2 seconds, and the set door opening time timer starts counting for 10 seconds. Then, since the photoelectric tube pulse has not been generated until the obstacle non-detection time timer finishes counting (time t ₃ ), the door opening / closing control circuit 4 causes the door to start the door closing operation and fully closes the door ( Time t ₄ ). For the conventional apparatus, is started door-closing operation at time t _5, since fully closed at time t ₆ can save time wasted 8 seconds.

FIG. 4 is a time chart showing a pattern when there are many users getting on and off. When the door at time t ₁ ~t ₂ is fully opened, the obstacle non-detection time timer after detecting the rise of the phototube pulses of the first user, and starts counting the 2 seconds falling time (time t _3). However, since the users get on and off one after another before the counting for 2 seconds is finished, the counting finally finishes at the point 2 seconds after the trailing edge of the last photocell pulse (time t ₄ ). It is time t ₆ ). On the other hand, the set door opening time timer has also started counting for 10 seconds from time t ₂ , and ends counting at time t ₅ . As a result, the door opening / closing control circuit 4 causes the door to perform the door closing operation and fully closes the door (time t ₇ ).

As shown in each of the above patterns, even if the set door opening time of the fully open door is set to 10 seconds,
If the user getting on and off is not detected within 2 seconds, the door is closed immediately, so that useless waiting time can be saved and driving efficiency can be improved. Also, the door will close automatically after waiting for 2 seconds,
There is almost no need for the user to operate the door opening / closing button by himself.

Next, the second to sixth embodiments will be described, in which the door is turned over when an obstacle is detected during the door closing operation. However, the reversal distance of the door is set to 200 [mm] (one side is 100 [mm]), the door is stopped at the reversal position for 1 second, and then the door is closed again. When the contact type obstacle detecting device (plates 2a, 2b, switches 3a, 3b, etc.) detects an obstacle, the door is once fully opened and then the door is closed again as in the conventional case. .

FIG. 5 is a time chart for explaining the operation of the second embodiment. In this figure, time t
It is assumed that the door closing operation is started at ₁ and an obstacle is detected by the photoelectric tube detection device at a position closed by 600 [mm] (300 [mm] on one side) (time t ₂ ). The door opening / closing control circuit 4 is 200 mm from the obstacle detection position.
After inverting the door for a distance of (100 [mm] on one side) (time t ₃ ), and stopping at that position for 1 second (time t ₃ ).
₅ ) Fully close the door (time t ₇ ). In the conventional device,
When an obstacle is detected, the door is once fully opened (time t ₄ ) and stopped at that position for 1 second (time t ₆ ).
Because the door is not fully closed (time t _8), it has been saving wasted time only 1.7 seconds.

As a general example of FIG. 5, when the door is about half closed, the case where the user rides in a car that is relatively empty and gets on the car is considered. But,
If the inside of the car is congested to a certain extent or more, the reversing operation only once may be insufficient.

FIG. 6 is a time chart for explaining the operation of the third embodiment in such a case. In this figure, the door closing operation is started at time t ₁ ,
It is assumed that the user rides in the vehicle at a position closed by 800 mm. This over narrowing boarding is detected by a phototube detector (time t _2), a door opening and closing control circuit 4 inverts the door by a distance of 200 (mm) (time t
₃ ) and stop at that position for 1 second (time t ₅ ).
At time t ₅ , if the user's body is not detected by the phototube detector, the door will be closed immediately, but at this time the car is crowded and time t _{Even in 5} , a part of the user's body still blocks the light from the photocell detector. Therefore, the door opening / closing control circuit 4 further reverses the door by a distance of 200 [mm] (time t ₆ ) and stops at that position for 1 second (time t ₇ ). During this time, the user can fully retract the part of the body protruding outside the car into the car, so that the photocell detector is no longer detecting an obstacle. Therefore, the door opening / closing control circuit 4 can fully close the door (time t ₉ ). In the conventional device, the door is once fully opened (time t ₄ ), stopped at that position for 2 seconds (the same total stop time as above) (time t ₈ ), and then fully closed (time t _10). ) Compared to the case, the wasteful time is saved by 1.7 seconds.

FIG. 7 is a time chart showing the operation of the fourth embodiment. This is a case where the passenger gets in the vehicle not only during the first door closing operation but also during the second door closing operation. In this figure, since the door closing operation is started at time t ₁ and the entry is detected at a position closed by 600 [mm] (time t ₂ ), the door is inverted by 200 [mm] (time t ₂ ). _3), after the door is stopped for one second (time t _4), it is assumed that was carried out again of the door-closing operation.
In this case, when the door is closed by 500 mm,
Although ride narrowing over is detected (time t _5), in this embodiment, narrowing over previously ride narrowing over the last door closing operation to reach the position of 600 [mm], which is detected (time t ₆₎ Ride Even if is detected, the further door inversion operation is prohibited. Therefore, in the present embodiment, despite the detected obstacle at time t _5, as it continues the door closing operation, causing the door fully closed (time t _7).

However, it is when the user's body does not contact the contact detection plates 2a, 2b that the door inversion operation during the door closing operation is prohibited as described above. In the same manner as in the conventional art, the door is once fully opened and then the door is closed again. This ensures the safety of users.

The broken line portion in FIG. 7 shows the operation of the conventional apparatus. If an obstacle is detected even during the door closing operation again, after performing the reversing operation similar to the previous time,
The fully closing operation is being performed (time t ₈ ). Therefore, according to the present embodiment, wasteful time can be saved by 4.8 seconds as compared with the conventional device.

In the fourth embodiment shown in FIG. 7, even if an obstacle is detected again during the door closing operation again (time t _{4 to} t ₇ ), the detected position corresponds to the previous detected position. If it is before (time t ₆ ), the reversal operation is prohibited again. However, in order to further improve the operating efficiency, until comes to a position closed more doors than the position corresponding to the previously detected position (position of the further right of the time t _6), prohibits the inverting operation again It may be that. This is the fifth embodiment.

FIG. 8 is a time chart showing the operation of the sixth embodiment, in the case where only the capacitive detection device 7a (or 7b) attached to the door panel detects an obstacle approaching within a certain distance. Is. In this figure, the door closing operation is started at time t ₁ and the door is moved to 600 [m
[m] is closed and a part of the user's body or luggage is present near the entrance / exit, so it is not detected by the phototube detector, but only by the capacitive detector (time t ₂ ). Therefore, the door opening / closing control circuit 4
Reverses the door 200 [mm] (time t ₃ ),
Without stopping for 1 second as shown in FIGS. 5 to 7, the door closing operation is immediately started again to fully close the door (time t ₄ ).

This is because, in the case of an obstacle that can be detected only by the capacitive type detection device, the user can prevent the obstacle from being detected while the door is being inverted for a short time. Or, it is usually because the luggage can be easily separated from the door panel. Also in this case, when the contact detection plates 2a and 2b detect the contact, the door is fully opened as in the conventional case, so that the safety of the user is ensured. The broken line part in FIG. 8 is
The operation of the conventional device is shown, and the door is fully closed at time t ₅ . Therefore, according to the present embodiment, wasteful time can be saved by 2.3 seconds as compared with the conventional device.

According to each of the above-described embodiments, it is possible to improve the operation efficiency of the elevator while ensuring the safety of the user. Consider, for example, an elevator in a 10-story building that travels between the first and tenth floors two to three times each way, and travels in an average of 90 seconds. If the phenomenon described in each embodiment occurs once in one way and the door opening / closing time can be shortened by 4.5 seconds on average, it takes 9 times in one round trip.
Seconds can be shortened, and an average round trip of 90 seconds is 8
It will be a round trip in 1 second. Therefore, this elevator 1
If it is operated for a period of time, it is possible to drive more than 4 reciprocations than before, and further, if it is operated for 8 hours, it is possible to operate more than 35 reciprocations.

Of course, such a calculation is a desk calculation, and an accurate numerical value cannot be obtained by a test only in a predetermined environment, but the test environment set by the applicant is more than that observed in the market. Since the strict conditions are set, it is presumed that in reality, it is possible to obtain an effect more than the above numerical value. Further, the above effect becomes more remarkable as the number of elevator users increases and the number of operating elevators increases.

The present invention can be easily implemented in an existing device having both contact type and non-contact type detecting devices by changing only the circuit configuration of the door opening / closing control circuit. Further, in the elevator adopting the configuration of the present invention, it is less necessary for the user in the car to press the door close button every time the door is opened, and finally, the door close button may be removed. .

Furthermore, the functions of the above-described embodiments are not always used, but are used only during times when there are a large number of users (when working in the morning and evening, and during lunch), and at other times the functions are the same as conventional ones. It is also possible to do it.

Although each of the above-mentioned embodiments refers to the case where only the non-contact type obstacle detecting device performs the detection, if the aim is to improve the operation efficiency, the contact type obstacle detecting device can be used. It is also conceivable to add the function of each of the above embodiments to the device.

[0043]

As described above, according to the present invention, it is possible to improve the driving efficiency within the range where the safety for the user is not impaired.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an apparatus according to the present invention.

FIG. 2 is a time chart regarding the operation of the first pattern of the first embodiment.

FIG. 3 is a time chart regarding the operation of the second pattern of the first embodiment.

FIG. 4 is a time chart for the operation of the third pattern of the first embodiment.

FIG. 5 is a time chart of the operation of the second embodiment.

FIG. 6 is a time chart of the operation of the third embodiment.

FIG. 7 is a time chart of the operation of the fourth embodiment.

FIG. 8 is a time chart of the operation of the sixth embodiment.

[Explanation of symbols]

1a, 1b Door 2a, 2b Contact detection plate (contact type obstacle detection device) 3a, 3b switch (contact type obstacle detection device) 4 Door opening / closing control circuit 5 Door opening / closing button 6a, 6b Phototube detection device (non-contact type obstacle) Object detection device) 7a, 7b Capacitive detection device (approaching obstacle detection device)

Claims (6)

[Claims] 1. A contact type and non-contact type obstacle detection device for detecting an obstacle when a door is opened and closed, and when the set door opening time of the door being fully opened has passed, the door is closed. In the elevator door opening / closing control device, when the non-contact type obstacle detection device does not detect an obstacle for a predetermined period of time, even before the set door opening time elapses, the door being fully opened is caused to perform a door closing operation. An elevator door opening / closing control device characterized by the following. 2. An elevator door opening / closing control device having a contact type and a non-contact type obstacle detecting device for detecting an obstacle at the time of opening / closing a door, wherein the non-contact type obstacle detecting device is provided during a door closing operation of the door. When an obstacle is detected, the door is reversed for a predetermined distance from the obstacle detection position, the door is stopped at the reversed position for a predetermined time, and then the door is closed again. Elevator door opening and closing control device. 3. The elevator door opening / closing control device according to claim 2, wherein when the non-contact type obstacle detection device detects an obstacle again during the door closing operation of the door again, the predetermined value at the time of the previous reversal is determined. An elevator door opening / closing control device characterized in that the door is turned over again by a distance increased by a predetermined amount from the distance. 4. The elevator door opening / closing control device according to claim 2 or 3, wherein when the door is to be closed again, until the door reaches the obstacle detection position at the time of the previous door closing operation. An elevator door opening / closing control device, characterized in that the door reversing operation based on the obstacle detection of the non-contact type obstacle detection device is prohibited. 5. The elevator door opening / closing control device according to claim 2 or 3, wherein when the door is to be closed again, the door is further moved in the door closing direction from an obstacle detection position at the previous door closing operation. An elevator door opening / closing control device, wherein door reversal operation based on obstacle detection of the non-contact type obstacle detection device is prohibited until a position advanced by a predetermined distance is reached. 6. The elevator door opening / closing control device according to claim 2, wherein the non-contact type obstacle detection device is attached to a door panel that opens and closes, and approaches the obstacle within a certain distance. If an approach obstacle detection device that detects this obstacle is included only when, and only this approach obstacle detection device among the non-contact type detection devices detects an obstacle during the door closing operation of the door The elevator door opening / closing control device is characterized in that the door is immediately re-closed at the inversion position for a predetermined time without being stopped.