JP2019001651A - Door control device of elevator - Google Patents

Abstract

To provide a door control device of an elevator capable of determining with precision whether a cause of an abnormality of a door opening and closing speed is temporary due to a noise or not while securing safety.SOLUTION: An opening and closing speed abnormality detection part operates the door to reopen with a first door test operation speed slower than a rating speed of the opening and closing speed of the door when the door is closed completely in a case of the abnormality detection, and determines whether an abnormality of the door opening and closing speed is present or not by comparing a second actual speed which is a door opening and closing speed in the door reopening operation with a second abnormality detection speed set value set lower than a first abnormality detection speed set value. In the abnormality detection if the door is not closed completely the door is reopened with a second door test operation speed slower than a first door test operation speed, the opening and closing speed abnormality detection part compares a third actual speed which is a door opening and closing speed in the door reopening operation with the third abnormality detection speed set value set lower than the second abnormality detection speed set value, and determines whether the abnormality of the door opening and closing speed is present or not.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an elevator door control device.

  In an elevator, an abnormality may occur in the opening and closing operation of the door due to some factors. Conventionally, in such a case, an overload factor that hinders the door opening and closing operation is determined, and the door speed when opening and closing the door again is changed to a speed according to the determined overload factor. Yes. For example, in Patent Document 1, when it is determined whether or not the overload factor that hinders the opening and closing operation of the door is rich in elasticity, and it is determined that the overload factor is a human body or the like that is rich in elasticity, In consideration of safety, a technique for switching the door speed to a low speed when the door is opened and closed again is disclosed. Further, in Patent Document 1, when it is determined that the overload factor is a hard foreign object such as a pebble with poor elasticity, the door speed at the time of reopening and closing the door can be switched to a high speed so that the foreign object can be removed. It is disclosed.

JP 2012-101921 A

  By the way, in an elevator, electrical noise may be applied to the detection signal of the encoder for detecting the door opening / closing speed. In such a case, the encoder detects an abnormality in the door opening / closing speed. When the encoder detects an abnormality in the door opening / closing speed, the elevator controller stops the operation of the elevator.

  If the door opening / closing speed abnormality detected by the encoder is due to transient noise, it is not necessary to stop the elevator operation. However, with the conventional technology, it is difficult to identify whether the door opening / closing speed abnormality detected by the encoder is due to noise or a genuine abnormality such as a door failure. The elevator operation will be suspended uniformly. And the operation efficiency of the elevator has fallen by performing such control.

  The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to ensure whether the cause of the abnormality in the door opening / closing speed is transient due to noise while ensuring safety. It is an object of the present invention to provide an elevator door control device capable of accurately discriminating the above.

  In order to solve the above-described problems, an elevator door control device according to the present invention includes an opening / closing speed detection unit that detects a door opening / closing speed of a door disposed at an entrance of the elevator, and a door position detection unit that detects a door position. And an opening / closing speed abnormality detecting unit that detects an abnormality of the door opening / closing speed and controls the door opening / closing speed. The opening / closing speed abnormality detection unit compares the first actual speed, which is the door opening / closing speed detected by the opening / closing speed detection unit, with a predetermined first abnormality detection speed setting value, thereby detecting an abnormality in the door opening / closing speed. The presence or absence of is determined. When it is detected that there is an abnormality, the opening / closing speed abnormality detection unit determines whether or not the door position detected by the door position detection unit is a position indicating complete door closing. When the position of the door is a position indicating that the door is completely closed, the opening / closing speed abnormality detection unit reopens the door at a first door test operation speed that is lower than a predetermined rated speed as a door opening / closing speed. Open operation. Next, the opening / closing speed abnormality detection unit sets the second actual speed, which is the door opening / closing speed at the time of the re-opening operation at the first door test operation speed, and a first value set lower than the first abnormality detection speed setting value. The presence / absence of an abnormality in the door opening / closing speed is determined by comparing the abnormality detection speed setting value of No. 2. On the other hand, when the door position detected by the door position detection unit is a position indicating incomplete door closing, the opening / closing speed abnormality detection unit detects that the second door is slower than the first door test operation speed. The door is opened again at the test operation speed. Next, the opening / closing speed abnormality detection unit sets the third actual speed, which is the door opening / closing speed during the re-opening operation at the second door test operation speed, and the second abnormality detection speed set value lower than the second abnormality detection speed setting value. 3 is compared with the abnormality detection speed setting value, the presence / absence of an abnormality in the door opening / closing speed is determined.

According to the elevator door control device configured as described above, it is possible to accurately determine whether or not the cause of the abnormality in the door opening / closing speed is transient due to noise while ensuring safety.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a block diagram which shows the structural example of the control system of the door control apparatus of the elevator which concerns on one Embodiment of this invention. It is explanatory drawing which shows the example of a setting of the 1st abnormality detection speed setting value which concerns on one Embodiment of this invention. It is explanatory drawing which shows the example of a door opening / closing pattern in case the abnormality of the door opening / closing speed which concerns on one Embodiment of this invention is detected. It is explanatory drawing which shows the example of a setting of the 1st door test operation speed and 2nd door test operation speed which concern on one Embodiment of this invention. It is explanatory drawing which shows the example of a setting of the 1st abnormality detection speed setting value which concerns on one Embodiment of this invention, a 1st abnormality detection speed setting value, and a 1st abnormality detection speed setting value. It is a flowchart which shows the procedure of the door control method by the door control apparatus which concerns on one Embodiment of this invention.

  Hereinafter, an elevator door control apparatus according to an embodiment of the present invention will be specifically described with reference to the drawings. In addition, the following description shows embodiment of the content of this invention, and this invention is not limited to these embodiment, In the range of the technical idea disclosed by this specification. Various changes and modifications can be made by those skilled in the art.

[Elevator door control device]
First, with reference to FIG. 1, the structural example of the door control apparatus of the elevator which concerns on this embodiment is demonstrated. FIG. 1 is a block diagram illustrating a configuration example of a control system of an elevator door control device 10 according to the present embodiment. The elevator door control device 10 is a device that controls the opening / closing operation of the door 1 provided at the entrance / exit of an elevator car (not shown), and is configured by a microcomputer or the like. The door control device 10 includes a door motor 2, a door motor control unit 3, a door position detection unit 4, an opening / closing speed detection unit 5, an opening / closing speed abnormality detection unit 6, and a storage unit 7.

  The door motor 2 drives a mechanism (not shown) that moves the door 1 in the opening direction or the closing direction. The door motor control unit 3 supplies a motor current based on the motor current command value to the door motor 2. The door position detection unit 4 detects the position of the door 1 based on a detection signal of an encoder (not shown) provided in the door motor 2. The opening / closing speed detector 5 detects the door opening / closing speed of the door 1 based on the detection signal of the encoder.

  The opening / closing speed abnormality detecting unit 6 determines whether or not the door opening / closing speed detected by the opening / closing speed detecting unit 5 is an abnormal speed, and when detecting the door opening / closing speed abnormality, the door opening / closing speed of the door 1 is detected. It is determined whether or not the cause of the abnormality is transient due to electrical noise.

The opening / closing speed abnormality detection unit 6 detects the abnormality of the opening / closing speed of the door 1 and determines whether or not the cause of the abnormality of the door opening / closing speed is transient due to electrical noise. To do.
(1) Compare the door opening / closing speed (an example of the first actual speed) detected by the opening / closing speed detection unit 5 with a first abnormality detection speed setting value Th set in advance for detecting the door opening / closing speed abnormality. Thus, it is determined whether or not an abnormality occurs in the door opening / closing speed.
(2) When it is determined that an abnormality occurs in the door opening / closing speed, it is determined whether or not the door 1 is completely closed based on the position of the door 1 detected by the door position detection unit 4. .
(3A) When the position of the door 1 detected by the door position detection unit 4 is a position indicating the complete door closing of the door 1, a first door test operation that is slower than a predetermined rated speed as a door opening / closing speed. At the speed St1, the door 1 is controlled to be opened again. Then, the door opening / closing speed (an example of the second actual speed) at the time of the re-opening operation at the first door test operation speed St1 and the second abnormality set lower than the first abnormality detection speed setting value Th1. By comparing with the detected speed setting value Th2, it is determined whether or not an abnormality has occurred in the door opening / closing speed.
(3B) If the position of the door 1 detected by the door position detection unit 4 is a position indicating incomplete door closing of the door 1, the second door test operation that is slower than the first door test operation speed St1. Control is performed to open the door 1 again at the speed St2 (see FIG. 4). Then, the door opening / closing speed (an example of the third actual speed) at the time of the door 1 re-opening operation at the second door test operation speed St2 is set to be lower than the second abnormality detection speed setting value Th2. 3 is compared with the abnormality detection speed setting value Th3 (see FIG. 5) to determine whether an abnormality has occurred in the door opening / closing speed.

  When the opening / closing speed abnormality detection unit 6 does not detect the door opening / closing speed abnormality in (3A) or (3B) above, the cause of the door opening / closing speed abnormality of the door 1 is transient due to electrical noise. The elevator operation is returned to the normal operation. When the opening / closing speed abnormality detection unit 6 detects an abnormality in the door opening / closing speed in (3A) or (3B) above, the cause of the abnormality in the door opening / closing speed of the door 1 is due to a failure (temporary) This is not the cause of the problem) and the elevator operation is suspended.

  The storage unit 7 is configured by, for example, a ROM (Read Only Memory) or an HDD (Hard Disk Drive). The storage unit 7 stores the first abnormality detection speed setting value Th1, the second abnormality detection speed setting value Th2, the first door test operation speed St1, and the like.

[Setting example of abnormal detection speed setting value and door test operation speed]
Next, setting examples of the first abnormality detection speed setting value Th1, the second abnormality detection speed setting value Th2, the first door test operation speed St1, and the second door test operation speed St2 will be described with reference to FIGS. Will be described with reference to FIG.

  First, a setting example of the first abnormality detection speed setting value Th1 will be described with reference to FIG. FIG. 2 is an explanatory diagram illustrating a setting example of the first abnormality detection speed setting value Th1. The vertical axis in FIG. 2 indicates speed (door opening / closing speed), and the horizontal axis indicates time. The door opening / closing pattern Pn of the door 1 at the normal time is accelerated from the start of operation (a point of “0”) to a predetermined point, as shown by a solid line in FIG. Finally, it will slow down again. The first abnormality detection speed setting value Th1 is set to a high speed that is not supposed to be measured in such a normal door opening / closing pattern Pn. Thereby, when the opening / closing speed of the door 1 exceeds the first abnormality detection speed setting value Th1, it can be determined that an abnormality has occurred in the door opening / closing speed. In FIG. 2, the first abnormality detection speed setting value Th1 is indicated by a broken line.

  Next, an example of an opening / closing pattern of the door 1 (hereinafter referred to as “door opening / closing pattern”) when an abnormality is detected will be described with reference to FIG. 3. FIG. 3 is an explanatory diagram illustrating an example of a door opening / closing pattern when an abnormality is detected. In FIG. 3, the vertical axis represents speed (door opening / closing speed), and the horizontal axis represents time. As shown in FIG. 3, when the actual opening / closing speed of the door 1 indicated by the door opening / closing pattern Pa exceeds the first abnormality detection speed setting value Th1, the opening / closing speed abnormality detecting unit 6 detects the abnormality of the door opening / closing speed. To detect.

  When the door opening / closing speed abnormality is detected, the opening / closing speed abnormality detecting unit 6 causes the door 1 to be opened again, and the door opening / closing speed is determined based on the door opening / closing speed (opening speed) of the door 1 during the door opening operation. It is determined whether or not the cause of the abnormality is transient due to electrical noise. At this time, if the operation speed (door test operation speed) of the door 1 when the door 1 is opened again is the speed at the time of detecting an abnormality, the door 1 moves when the door position of the door 1 moves to the open end. There is a risk that a large impact will be applied to the open end of the wire and the open end mechanism will be damaged. In order to prevent such a situation, in this embodiment, the opening / closing speed abnormality detection unit 6 reduces the door test operation speed to a speed lower than the rated speed when the door 1 is opened again.

  In the present embodiment, the opening / closing speed abnormality detection unit 6 also performs control to vary the door test operation speed according to the door position (stop position) of the door 1 when the door opening / closing speed abnormality is detected. Specifically, the opening / closing speed abnormality detection unit 6 opens the door 1 again at the first door test operation speed St1 when the door 1 is completely closed, and the door 1 is incompletely closed. If it is, the door 1 is opened again at the second door test operation speed St2.

  FIG. 4 is an explanatory diagram illustrating a setting example of the first door test operation speed St1 and the second door test operation speed St2. The vertical axis in FIG. 4 indicates speed (door test operation speed), and the horizontal axis indicates time. As shown in FIG. 4, the second door test operation speed St2 applied when the door 1 is not completely closed is slower than the first door test operation speed St1 applied when the door 1 is completely closed. Set to

  The opening / closing speed abnormality detection unit 6 is configured to detect the actual opening / closing speed of the door 1 detected by the opening / closing speed detection unit 5 and the first abnormality detection speed setting value during the re-opening operation at the first door test operation speed St1. The second abnormality detection speed setting value Th2 set lower than Th1 is compared. In addition, the opening / closing speed abnormality detection unit 6 performs the opening / closing actual speed of the door 1 detected by the opening / closing speed detection unit 5 and the second abnormality detection speed during the re-opening operation at the second door test operation speed St2. The third abnormality detection speed setting value Th3 set lower than the setting value Th2 is compared.

  FIG. 5 is an explanatory diagram illustrating a setting example of the second abnormality detection speed setting value Th2 and the third abnormality detection speed setting value Th3. The vertical axis in FIG. 5 indicates speed (door opening / closing speed), and the horizontal axis indicates time. In FIG. 5, the first abnormality detection speed setting value Th <b> 1 is indicated by a broken line, the second abnormality detection speed setting value Th <b> 2 used when the door 1 is completely closed is indicated by a dashed line, and the door 1 is not fully closed. The third abnormality detection speed setting value Th3 used is indicated by a two-dot chain line.

  If the door 1 is incompletely closed when the door opening / closing speed is detected, the distance from the door position where the door 1 is stopped to the open end of the door 1 is compared with that when the door 1 is fully closed. And shortened. That is, the moving distance of the door 1 from the stopped door position to the open end is also shorter than when the door 1 is completely closed. In this case, the door opening / closing pattern Pa1 that moves from the door position where the door 1 is stopped to the open end of the door 1 is indicated by a solid line in FIG.

  When the door 1 is incompletely closed, since the moving distance of the door 1 from the door stop position to the open end is short, the actual opening / closing speed of the door 1 shown as the door opening / closing pattern Pa1 is the second abnormality detection speed setting. Before reaching the value Th2, the door position of the door 1 may move to the open end. In this case, the actual opening / closing speed of the door 1 in the door opening / closing pattern Pa1 does not exceed the second abnormality detection speed setting value Th2. Therefore, the opening / closing speed abnormality detecting unit 6 detects an abnormality in the opening / closing speed of the door 1. Is not detected.

  In the present embodiment, the second abnormality is detected when the door 1 is incompletely closed so that the abnormality in the opening / closing speed of the door 1 can be detected even when the door 1 is opened and closed with the door opening / closing pattern Pa1. A third abnormality detection speed setting value Th3 set lower than the detection speed setting value Th2 is used. The second door test operation speed St2 and the third abnormality detection speed setting value Th3 applied when detecting the incomplete door closing of the door 1 are the distance from the door position where the door 1 is stopped to the open end of the door 1. Accordingly, it is calculated at any time. On the other hand, the first abnormality detection speed setting value Th1, the second abnormality detection speed setting value Th2, and the first door test operation speed St1 are set in advance based on the distance from the closed end to the open end of the door. The

[Door control method for elevator door control devices]
Next, with reference to FIG. 6, the procedure of the door control method by the elevator door control apparatus 10 of this embodiment is demonstrated. FIG. 6 is a flowchart showing a procedure of a door control method by the elevator door control device 10 of the present embodiment.

  First, has the opening / closing speed abnormality detection unit 6 detected the door opening / closing speed abnormality by comparing the actual speed of the door 1 detected by the opening / closing speed detection unit 5 with the first abnormality detection speed setting value Th1? It is determined whether or not (step S1). Specifically, the opening / closing speed abnormality detection unit 6 detects an abnormality of the door opening / closing speed when the actual speed of the door 1 exceeds the first abnormality detection speed setting value Th1, and the actual speed of the door 1 is the first speed. Is not detected, the door opening / closing speed abnormality is not detected. If no abnormality in the door opening / closing speed is detected in step S1 (if step S1 is NO), the opening / closing speed abnormality detecting unit 6 ends the process.

  On the other hand, when an abnormality in the door opening / closing speed is detected in step S <b> 1 (when step S <b> 1 is YES), the opening / closing speed abnormality detection unit 6 detects that the door 1 is completely closed based on the output from the door position detection unit 4. It is determined whether or not (step S2). If it is determined in step S2 that the door 1 has been completely closed (step S2 is YES), the opening / closing speed abnormality detection unit 6 sets the test operation speed of the door 1 to be lower than the rated speed. The test operation speed St1 is set. Furthermore, the opening / closing speed abnormality detection unit 6 sets a second abnormality detection speed setting value Th2 that is set lower than the first abnormality detection speed setting value Th1 as the threshold value for detecting the door opening / closing speed abnormality (step S3). ). Next, the opening / closing speed abnormality detection unit 6 performs control for opening the door 1 again (step S4).

  The opening / closing speed abnormality detection unit 6 performs control to cause the door 1 to perform the re-opening operation at the first door test operation speed St1 slower than the rated speed, so that an abnormal (high speed) speed when the abnormality is detected is detected. The door 1 is not opened while maintaining the above. Thereby, it is avoided that a large impact is applied to the open end of the door 1 and the open end of the door is damaged, or a passenger who may be at the doorway of the elevator is contacted.

  Next, the opening / closing speed abnormality detection unit 6 compares the actual opening / closing speed of the door 1 detected by the opening / closing speed detection unit 5 with the second abnormality detection speed setting value Th2, thereby again detecting the door opening / closing speed abnormality. It is determined whether or not it has been detected (step S5). The opening / closing speed abnormality detection unit 6 detects an abnormality in the door opening / closing speed when the actual opening / closing speed of the door 1 exceeds the second abnormality detection speed setting value Th2, and the actual opening / closing speed of the door 1 is the second speed. Is not detected, the door opening / closing speed abnormality is not detected.

  When an abnormality in the door opening / closing speed is detected in step S5 (when step S5 is YES), the opening / closing speed abnormality detecting unit 6 performs control to stop the operation of the elevator (step S6). The fact that the door opening / closing speed abnormality is detected again during the re-opening operation of the door 1 means that the door opening / closing speed abnormality detected in step S1 is not due to a temporary cause due to electrical noise. I can judge. Therefore, the opening / closing speed abnormality detection unit 6 performs control to stop the operation of the elevator.

  On the other hand, when the door opening / closing speed abnormality is not detected in step S5 (step S5 is NO), the opening / closing speed abnormality detecting unit 6 determines whether or not the open end of the door 1 is detected (step). S7). That is, the opening / closing speed abnormality detection unit 6 determines whether or not the door 1 performing the re-opening operation has been completely opened.

  If it is determined in step S7 that the open end of the door 1 has not been detected (NO in step S7), the opening / closing speed abnormality detection unit 6 returns to step S5 and repeats the determination. On the other hand, if it is determined in step S7 that the open end of the door 1 has been detected (YES in step S7), the opening / closing speed abnormality detection unit 6 detects the operation speed of the door 1 and the door opening / closing speed abnormality. The threshold value is returned to the original set value (step S8). Next, the opening / closing speed abnormality detection unit 6 returns the operation of the elevator to the normal operation (step S9).

  If the door opening / closing speed abnormality is not detected between the time when the door 1 is opened again and the door 1 moves from the stop position to the open end, the door opening / closing speed abnormality detected in step S1 is It can be determined that this is due to a temporary cause of noise. In this case, it is considered that the safety of passengers can be ensured even when the operation of the elevator is returned to the normal operation. Therefore, the opening / closing speed abnormality detection unit 6 performs control to return the operation of the elevator to the normal operation.

  When it is determined in step S2 that the door 1 is not completely closed (incompletely closed) (when step S2 is NO), the opening / closing speed abnormality detection unit 6 starts from the stop position of the door 1. Based on the distance to the open end, the second door test operation speed St2 and the third abnormality detection speed set value Th3 are calculated (step S10). Next, the opening / closing speed abnormality detection unit 6 sets the test operation speed of the door 1 to a second door test operation speed St2 that is slower than the first door test operation speed St1. Further, the opening / closing speed abnormality detection unit 6 sets the third abnormality detection speed setting value Th3 set lower than the second abnormality detection speed setting value Th2 as the threshold value for detecting the door opening / closing speed abnormality (step S11). ).

  Next, the opening / closing speed abnormality detection unit 6 performs a control for opening the door 1 again. After the process of step S4, the determination of step S5 is performed.

  By performing the processes of steps S10, S11, and S4, it is possible to prevent the occurrence of an event that the actual speed of the door 1 does not reach the abnormality detection threshold because the moving distance of the door 1 is short. Accordingly, it is possible to prevent erroneously diagnosing that the door opening / closing speed is normal although the door opening / closing speed is actually abnormal.

[Effects]
In the present embodiment described above, the opening / closing speed abnormality detection unit 6 compares the actual opening / closing speed of the door 1 detected by the opening / closing speed detection unit 5 with a predetermined first abnormality detection speed setting value Th1. Then, it is determined whether or not the door opening / closing speed is abnormal. When the abnormality is detected, the opening / closing speed abnormality detecting unit 6 performs the re-opening operation at the first door test operation speed St1 slower than the rated speed of opening / closing the door 1. Then, the opening / closing speed abnormality detection unit 6 compares the actual door opening / closing speed with the second abnormality detection speed setting value Th2 set lower than the first abnormality detection speed setting value Th1, and calculates the door opening / closing speed. Determine if there is an abnormality.

  According to this embodiment described above, safety is ensured because the door 1 is not reopened at the abnormal speed when the abnormality is detected. Further, according to the present embodiment, it is possible to easily determine whether a transient abnormality due to electrical noise or a genuine abnormality such as a failure is based on the door opening / closing speed when the door 1 is opened again. it can. Furthermore, in this embodiment, when the opening / closing speed abnormality detection unit 6 determines that the cause of the door opening / closing speed abnormality is temporary, the operation of the elevator is returned to the normal operation. Therefore, the situation where the elevator is stopped unnecessarily can be avoided, and a decrease in the operation efficiency of the elevator can be prevented.

  In the present embodiment, when the opening / closing speed abnormality detection unit 6 detects an abnormality in the door opening / closing speed, the door position is detected based on the output from the door position detection unit 4, and the door is completely closed. The re-opening operation is performed at the first door test operation speed St1 slower than the rated speed. The opening / closing speed abnormality detection unit 6 compares the actual opening / closing speed of the door 1 with the second abnormality detection speed setting value Th2 set lower than the first abnormality detection speed setting value Th1. Determine whether there is any abnormality. When the door 1 is incompletely closed, the opening / closing speed abnormality detection unit 6 performs the re-opening operation of the door 1 at the second door test operation speed St2 that is slower than the first door test operation speed St1. The opening / closing speed abnormality detection unit 6 compares the actual opening / closing speed of the door 1 with the third abnormality detection speed setting value Th3 set lower than the second abnormality detection speed setting value Th2. Determine whether there is any abnormality. That is, in the present embodiment, the door movement distance when the door 1 is reopened is reflected in the door test operation speed and the abnormality detection speed setting value, and such door test operation speed and abnormality detection speed setting value are used. Thus, it is determined whether the door opening / closing speed is abnormal. Therefore, according to the present embodiment, it is possible to accurately detect an abnormality in the door opening / closing speed regardless of the stop position of the door 1.

  In the present embodiment, the second door test operation speed St2 and the third abnormality detection speed setting value Th3 used when the door 1 is not fully closed are the distance from the door stop position to the open end of the door 1. It is calculated from time to time accordingly. Therefore, according to the present embodiment, it is possible to determine whether or not there is an abnormality in the door opening / closing speed in a state in which safety is ensured regardless of the stop position of the door 1, and with high accuracy. An abnormality in the door opening / closing speed can be detected.

  Furthermore, in the present embodiment, the first door test operation speed St1 and the second abnormality detection speed setting value Th2 used when the door 1 is incompletely closed are based on the distance from the closed end to the open end of the door. Are preset. Therefore, according to the present embodiment, when the door 1 is incompletely closed when the door opening / closing speed abnormality is detected, is the cause of the door opening / closing speed abnormality transient due to electrical noise? The determination of whether or not can be executed promptly.

  As mentioned above, embodiment of the door control apparatus of the elevator of this invention was described including the effect. However, the elevator door control device of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention described in the claims.

  In the above-described embodiment, the second door test operation speed St2 and the third abnormality detection speed setting value Th3 used when the door 1 is not completely closed are set according to the distance from the door position to the open end of the door 1. Although an example of calculating from time to time has been given, the present invention is not limited to this. The second door test operation speed St2 and the third abnormality detection speed setting value Th3 corresponding to each distance from the door position to the open end of the door 1 are obtained in advance and stored in a table or the like, and these stored in the table The opening / closing control of the door 1 may be performed with reference to this value.

  Further, each configuration, function, processing unit, and the like related to the control of the elevator door control device described above may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. In addition, each configuration, function, and the like related to the control described above may be realized by a processor interpreting and executing a program that realizes each function, that is, by software. Information (data) such as programs, tables, and files for realizing each function is stored in a memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD. can do.

  DESCRIPTION OF SYMBOLS 1 ... Door, 2 ... Door motor, 3 ... Door motor control part, 4 ... Door position detection part, 5 ... Opening / closing speed detection part, 6 ... Opening / closing speed abnormality detection part, 7 ... Memory | storage part, 10 ... Door control apparatus, St1 ... No. 1 door test operation speed, St2 ... second door test operation speed, Th1 ... first abnormality detection speed setting value, Th2 ... second abnormality detection speed setting value, Th3 ... third abnormality detection speed setting value

Claims (4)

In an elevator door control device comprising: an opening / closing speed detecting unit for detecting a door opening / closing speed of a door disposed at an entrance of the elevator; and a door position detecting unit for detecting the position of the door,
While detecting an abnormality of the door opening and closing speed, and comprising an opening and closing speed abnormality detection unit for controlling the door opening and closing speed,
The opening / closing speed abnormality detection unit compares the first actual speed, which is the door opening / closing speed detected by the opening / closing speed detection unit, with a predetermined first abnormality detection speed setting value, thereby determining the door opening / closing speed. It is determined whether or not there is an abnormality in speed, and when it is detected that the abnormality is present, it is determined whether or not the door position detected by the door position detection unit is a position indicating complete door closing of the door. When the door is at a position indicating complete door closing, the door is opened again at a first door test operation speed lower than a predetermined rated speed as a door opening / closing speed. A second actual speed that is a door opening / closing speed at the time of the re-opening operation at the first door test operation speed, and a second value that is set lower than the first abnormality detection speed setting value. By comparing with the abnormality detection speed setting value And determining whether there is an abnormality in the door opening / closing speed, and if the door position detected by the door position detector is a position indicating incomplete door closing of the door, the first door A third actual speed that is a door opening / closing speed at the time of the second door test operation speed when the door is opened again at a second door test operation speed slower than the test operation speed. And the third abnormality detection speed setting value set lower than the second abnormality detection speed setting value to determine whether the door opening / closing speed is abnormal or not. Control device. The opening / closing speed abnormality detection unit compares the second actual speed with the second abnormality detection speed setting value or compares the third actual speed with the third abnormality detection speed setting value. Control for returning the operation of the elevator to normal operation when no abnormality of the door opening / closing speed is detected, and control for stopping the operation of the elevator when abnormality of the door opening / closing speed is detected. The elevator door control device according to claim 1. The second door test operation speed and the third abnormality detection speed set value are calculated based on a distance from a position where the door stops to an open end of the door. The elevator door control device described in 1. 4. The elevator according to claim 3, wherein the first door test operation speed and the second abnormality detection speed setting value are preset based on a distance from a closed end to an open end of the door. Door control device.

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