JPH06305668A - Door fault alarm device for elevator - Google Patents

Abstract

PURPOSE:To provide a door fault alarm device for elevator capable of suppressing the useless dispatch of maintenance person when a door fault alarm is given by a trick, etc. CONSTITUTION:Time intervals required for repeated actions of door open and close instructions and door reverse instruction outputted from an elevator control panel 3 is measured by a door fault alarm device installed in an inspection control device 1b. When the time intervals are not equal to each other, the cause of it is judged to be a trick and, only when the time intervals are equal to each other, a door fault alarm is given to a monitoring center 2 through a communication device 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door abnormality condition notification device for detecting an abnormality in an elevator door and issuing a warning to a monitoring center.

[0002]

2. Description of the Related Art Elevators are installed in various buildings (buildings) and used by many people who enter and exit the buildings.
For this reason, when an abnormality occurs in the elevator, the operation of the elevator is hindered, causing a great inconvenience to a person who uses the elevator. In addition, when the abnormality is a serious abnormality, a personal injury may occur. For this reason, the elevator is equipped with a control device that collects various data regarding its operation status from time to time and determines whether or not there is an abnormality based on the collected data. A system has been adopted that reports an abnormality that has occurred to a monitoring center that controls a large number of elevators, including elevators, and executes the required processing.

By the way, as one of the above-mentioned serious abnormalities,
There is an abnormality in the opening and closing of the elevator doors. This abnormality is an abnormality in which the door to be closed is not completely closed and the door to be opened is not completely opened, and such an abnormality obviously poses a risk to passengers, and therefore is reported to the surveillance center.

[0004]

There are various causes for the occurrence of an abnormality in the elevator door, but foreign matter is often caught in the groove of the elevator door, which causes the abnormality. When foreign matter is caught in the groove in this way, the closing operation (opening operation) of the elevator door is interrupted in the middle and a large load is applied to the elevator door, and the overload detection switch at the time of driving the door operates and the closing operation (or The opening operation) is reversed, the elevator door is opened (closed), the elevator door closing operation (opening operation) is repeated, and the inversion is repeated. Only when the number of repetitions of opening and closing exceeds a predetermined value, an abnormality is reported to the monitoring center, a maintenance worker is dispatched to remove the foreign matter, and the abnormality is recovered.

By the way, the heavy load on the elevator door is not only caused by the foreign matter in the groove as described above, but also when the door is artificially strongly pressed. The load detection switch is activated to reverse the door. Therefore, repeated actions by an unconscious passenger to flip the elevator door during the closing or opening operation will result in the elevator door opening and closing in the same manner as if a foreign object had become caught in the groove. Repeating the opening and closing in the middle of the above, similarly issues an alarm to the monitoring center. When the maintenance staff arrives at the elevator in response to this notification, the passengers who have already performed the above-mentioned actions are gone, the elevator doors are in a normal state, and the maintenance staff is wasted, resulting in a large human loss and maintenance. There was a problem that it interferes with other tasks that the staff should perform.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems in the prior art and to provide an elevator door abnormal condition notification device capable of suppressing wasteful dispatch of maintenance personnel.

[0007]

In order to achieve the above-mentioned object, the present invention provides a signal collecting means for collecting operation signals of an elevator door, and a door collecting apparatus based on the operation signals collected by the signal collecting means. An elevator equipped with a judging means for judging whether or not there is an abnormality in operation, and a communication means for notifying an abnormality occurrence to a monitoring center having jurisdiction over the elevator when this judging means judges that there is an abnormality in door operation In the abnormal door state alarm device, the determination means includes a reversal detection means for detecting whether or not the door is reversed after the door opening / closing command is output, and a reversal detection from the door opening / closing command output when the reversal is detected by the reversal detecting means. The time measuring means for measuring the time until the start of and the time measured by this time measuring means are almost the same Characterized by being composed of a that abnormal inversion determination unit.

[0008]

[Function] When the door is inverted after the door close (open) and door close (open) commands are output, the time from the door close (open) command output to the door inversion start is measured. To be done. If the door reverses, the door opens (closes), the door close (open) command is output again, and the door reverse is detected again while the door closes (open), the door close (open) command also occurs at this time. The time from the output to the door inversion start is measured, and a comparison is made as to whether or not the measured time is substantially the same as the previously measured time. In this way, when the reversal for the same time is performed a predetermined number of times, it is determined that there is a foreign object on the door, and an abnormal door condition is reported to the monitoring center. On the other hand, if the reversals are not made at the same time, it is judged that the reversals are caused by mischief such as pressing of the elevator door, and the alarm is not issued to the monitoring center.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an elevator monitoring device equipped with an elevator door abnormal condition notification device according to an embodiment of the present invention. The monitoring device 1 is the communication device 1
a, an inspection control device 1b, and a writable memory 1c, and is connected to the monitoring center 2 and the elevator control device 3. The elevator control device 3 is composed of a computing device 3a and an input device 3b. The rotary encoder 4 connected to the rotating machine 5 is for detecting the speed of the car 6 and the moving position of the car 6 in the hoistway, and is connected to the input / output device 3b of the elevator control device 3. The position detectors 7 and 8 attached to the predetermined positions of the hoistway detect the absolute position of the car 6, and are connected to the input / output device 3b.

Next, the abnormality determination operation of the elevator door abnormality state notification device will be described with respect to the door closing operation with reference to the flow chart shown in FIG. 2 and the time chart shown in FIG. In FIG. 3, A is a time chart of a door opening / closing command in normal times, B is a time chart of a door opening / closing command due to mischief, etc., and C is a time chart of a door opening / closing command due to foreign matter being caught. First, the case of an abnormality in which a foreign object is caught in the groove of the elevator door will be described. Since the number of reversals n before the abnormality first occurs is 0, the number of reversals n is set to 0 in step S1 of FIG. In step S2, it is checked whether or not there is a door close command, and the process waits until the door close command is output.

[0012] processing to detect a door close command at time t ₀₀ shown in FIG. 3 checks whether there is a door reversal proceeds to step S3. Since the reversal of the door cannot be detected immediately after the time t ₀₀ has passed, the process proceeds to step S4.
Since the door is not completely closed, the process again proceeds to step S3. Such process is repeated Kaee, reversal of the door is generated by comprising the foreign matter caught in the groove at time t _21, which is determined in the step S3, the process proceeds to step S5. In step S5 the inversion frequency n of the door adds "1" to measure the time T ₂₁ of at step S6 to the reversing operation of the door close command.

Next, in step S7, it is checked whether or not a predetermined set number N (here, N = 10) for judging an abnormal door is equal to the number n of inversions. In this case, Since the set number N = 10 has not been reached yet, the process proceeds to step S8. In step S8, it is checked whether or not the reversing operation is the first, and in this case, the reversing number n
Since = 1, the process returns to step S2 and waits until the door close command is detected.

At time t ₂₂ , the door closing command is detected again, and the process proceeds to step S3 to check the reversal of the door. Until the door is completely closed, the processes of steps S3 and S4 are repeated until the door is completely closed. When the reversing operation is performed at time t ₂₃ due to the foreign matter that has been caught in, the number of reversals n is “1”.
Then, n = 2. Then, to measure the time T ₂₂ to the inverting operation of the door closing command for reversing operation has occurred again in step S6. Since the number of inversions n has not reached the set number N = 10, the process proceeds from step S7 to step S8. However, since the number of inversions n is not the first time, the process proceeds to step S9. In step S9, the last measurement time T ₂₁
This time is compared with the measurement time T _{22 of} this time. In this case, T ₂₁ = T ₂₂ as shown in FIG. 3, so the process proceeds to step S2 again and waits until the door close command is detected. Similarly, time t
₂₄ repeats the processing of step S2~ step S9 at, t _26.

When "1" is added to the number of reversals n at step S5 and n = 10, the time from the tenth door closing command to the reversing operation is measured at step S6. And
In step S7, it is determined that the number of inversions n has reached the set number N = 10, and then the process proceeds to step S10 in which the same process as step S9 is performed, and the previous measurement time and the current measurement time are compared. As a result of comparison, in this case, it is the same again, and since it can be determined that an abnormality (other than a mischief) due to foreign matter being caught or the like, the process proceeds to step S11 and an abnormality is reported to the monitoring center 2 to notify the abnormal state of the door The processing ends.

Next, the case of a non-abnormal state due to artificial disturbance (mischief, etc.) will be described. The first processing by the door reversing operation is similar to the case where the foreign matter is caught in the groove of the elevator door, and the reversing number n is set to 0 in step S1, and then the door closing command is issued in step S2. It checks whether or not there is and waits until the door close command is output. Processing and to detect the door closing command at time t ₀₀ is the repetition of steps S3, S4.

At time t ₁₁ , the door is turned over due to the foreign matter caught in the groove, and the process proceeds to step S5. In step S5, the number n of times the door is reversed is incremented,
Time T from the door close command to the reversing operation in step S6
Measure ₁₁ . Then, steps S7, S8, S2-S
In step S6, the time T ₁₂ from the door closing command of the reversing operation to the reversing operation that has occurred again is measured. Since the number of inversions n has not reached the set number N = 10, the process proceeds from step S7 to step S8.
Is not 1, the process proceeds to step S9. Step S9 and the previous measurement time T ₁₁ was repeated inversion in comparing the current measurement time T _12, since this case is naughty, is both time and T ₁₁ ≠ T _12, as shown in B of FIG. 3 Differently, the process proceeds to step S1 and the number of reversals n is cleared, and the process is terminated without reporting the abnormality to the monitoring center. Therefore, it is possible to prevent unnecessary dispatch of maintenance personnel.

[0018]

As described above, according to the present invention, the abnormal door condition is determined based on the time difference between the door opening / closing command and the reversing command. When an abnormality occurs, it is possible to issue an abnormality report, which in turn can prevent unnecessary maintenance staff from being dispatched.

[Brief description of drawings]

FIG. 1 is a block diagram of an elevator door abnormal state notification device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of an abnormal door state notification device for an elevator shown in FIG.

FIG. 3 is a time chart of a door closing command that is taken into the door abnormal state notification device of the elevator shown in FIG.

[Explanation of symbols]

 1 Elevator Monitoring Device 1a Communication Device 1b Inspection Control Device (Including Door Abnormal Condition Notification Device) 1c Memory 2 Monitoring Center 3 Elevator Control Device 6 Car

Claims (1)

[Claims] 1. A signal collecting means for collecting an operation signal of an elevator door, a judging means for judging whether or not there is an abnormality in the operation of the door based on the operation signal collected by the signal collecting means, and this judging means. In a door abnormal state notification device for an elevator, which is provided with a communication means for reporting the occurrence of an abnormality to a monitoring center having jurisdiction over the elevator when it is determined that there is an abnormality in the operation of the door, the determination means outputs a door opening / closing command. Inversion detection means for detecting whether or not the rear door is inverted, and time measurement means for measuring the time from the door opening / closing command output to the start of the inversion when the inversion is detected by the inversion detection means, And an abnormal reversal judging means for judging whether or not reversals having substantially the same time measured by the time measuring means have occurred a predetermined number of times in succession. Beta door abnormal condition notification device.