JPH11246140A - Elevator control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure safety of an operator by returning to operation in an ordinary mode after imparting time for the operator to confirm safety by recognizing a return to the ordinary mode by restricting a movement for a prescribed time when an inspection mode stopping command is issued. SOLUTION: An operation control device receiving a release of an inspection mode command or a release of an emergency stopping command sets a safety mode command (S7), and exercises a releveling prohibiting command (S8, 9) to restrict a movement of an elevator car for a constant time by releveling operation to adjust a floor level of the elevator car to a floor level of the landing floor. When an announcement prohibiting command is not previously sent out to the operation control device from an input device, a warning command is sent out here to an annunciator to output a warning to inform the finish of an inspection mode (S11, 12). To the contrary, when the announcement prohibiting command is set, a warning releasing command is sent out to the annunciator from the operation control device to stop the warning (S11, 13).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control apparatus characterized by control of returning to operation in a normal mode after maintenance work of an elevator system is completed.

[0002]

2. Description of the Related Art In general, an elevator system moves an elevator car at a low speed (for example, 15 m / min between floors and 3 m / min near a floor) for installation adjustment, maintenance and inspection work. A function of operating in an inspection mode that can be stopped at a time is provided.

The operation in the inspection mode is performed by operating an operation changeover switch and an up / down switch mounted on an elevator control panel, an elevator car, or a keyed box in the elevator car. The general user cannot perform the operation. In addition, if at least one of the operation changeover switches installed in each part of the elevator system has been switched to the inspection mode, it is not possible to return to the operation in the normal mode, and the operation in the inspection mode is performed. Priority to ensure the safety of workers and users.

When returning from the inspection mode to the normal mode, all of the operation changeover switches installed in the above-mentioned respective parts may be switched to the normal mode. The elevator car is not always at the same level as the floor of the elevator hall entrance.

[0005] Therefore, it is necessary to move the floor level of the elevator car so as to match the floor level of the elevator entrance / exit on a certain floor. When the floor level is above and near the floor level of the landing doorway of a certain floor, it moves downward slowly, and conversely when the floor level is below and near the floor level of the landing doorway, it moves upward slowly (for example, 3 m / m). Move the car in minutes) and adjust the level. If the car is located farther than the floor level of the landing entrance, such as between floors, the car will be moved to a predetermined floor, which is called the reference floor, in which the floor can be landed in the direction of the given floor. Re-level at the rated speed in the normal mode that is set according to). Thus, the operator can smoothly return to the normal mode without considering the position of the elevator car.

[0006]

However, such a conventional elevator control device has the following problems. In particular, when performing installation adjustments and maintenance inspection work on the car, perform the check operation by operating the operation changeover switch mounted on the elevator car to the check operation side, and start the operation when the work is completed. It is necessary to perform an operation of switching the changeover switch to the normal mode side, but before that, the operator himself must first get off the elevator car. For this reason, after moving the elevator car below the floor level of the hall entrance, the worker needs to open the hall door, exit the elevator car to the hall side, and then switch the operation changeover switch to the normal mode side. Can be

Normally, when the landing door is open, the safety circuit operates to prevent the elevator car from moving. Therefore, the above-described relevel operation is not performed, and the operation changeover switch is normally set. After switching to mode, closing the landing door activates relevel,
The elevator car is automatically moved until the car floor level matches the landing floor level, and the operation can be smoothly shifted to the normal mode.

However, at the time of installation and adjustment work, the elevator car may be used in a state where the safety circuit is not yet attached to the elevator or has not been adjusted. If a short-circuit fault occurs, the door may be erroneously detected as being closed even though the landing door is open.In such a case, when the operation changeover switch is switched to the normal mode, the door is closed. Since the re-level may start immediately even if the door is open, it was necessary to take great care to prevent the worker from being pinched or dropped.

The present invention has been made in view of such a conventional problem, and when returning from the inspection operation to the operation in the normal mode, when the safety circuit is not attached or the door circuit is short-circuited, The safety of the worker is ensured without being affected by the condition of the equipment, even if there is an unexpected return operation to the normal operation mode due to a switch operation error of the worker during the inspection operation, and An object of the present invention is to provide an elevator control device capable of smoothly shifting an elevator to operation in a normal mode.

[0010]

According to the present invention, there is provided an elevator control apparatus comprising: an inspection mode instruction means for issuing an inspection mode instruction and a stop instruction thereof; and an elevator operating in a normal mode in response to the inspection mode instruction. Inspection operation means for prohibiting the operation of the elevator in the inspection mode, and normal mode return control for restricting the movement of the elevator for a predetermined time in response to the inspection mode stop command, and thereafter returning to the operation in the normal mode Means.

In the elevator control apparatus according to the first aspect of the present invention, when the inspection work is completed by the inspection operation and the return to the normal mode is to be performed, when the inspection mode stop command is issued by the inspection mode command means, the normal mode return is performed. The control means does not immediately shift the elevator to the normal mode, but restrains the elevator for a predetermined period of time. The operator recognizes the return to the normal mode and gives time to confirm safety, and then returns to the operation in the normal mode.

Thus, the operator can respond to the return to the operation in the normal mode with a margin, and safety can be ensured.

According to a second aspect of the present invention, there is provided the elevator control device according to the first aspect of the present invention, further comprising a notifying means for receiving the check mode stop command and notifying the cancellation of the check mode. When the inspection mode stop command is issued by the means, the normal mode return control means restrains the elevator for a predetermined time without immediately shifting to the normal mode, and notifies the cancellation of the inspection mode by the notification means. Even when the operator operates the inspection mode command means and issues an inspection mode stop command, it is possible to make other workers surely recognize that the inspection mode is canceled and the operation returns to the normal mode.

According to a third aspect of the present invention, in the elevator control device according to the first or second aspect of the present invention, the normal mode return control means receives the inspection mode stop command and moves to a predetermined floor below the car position at that time. On the other hand, when returning from the inspection mode to the normal mode, the elevator car always starts moving downward. There is no danger of being caught in between.

According to a fourth aspect of the present invention, in the elevator control device according to the third aspect of the present invention, the normal mode return control means performs the floor positioning operation at a low speed or a low speed regardless of the car position. Therefore, even if the elevator car starts to move in the floor alignment operation before shifting to the operation in the normal mode, it is possible to give the worker time to take necessary actions for ensuring safety.

According to a fifth aspect of the present invention, in the elevator control device according to the first to fourth aspects of the present invention, the latest control processing stage in which the processing is completed in the normal mode return control by the normal mode return control means is stored. A storage unit with a backup power supply, wherein the normal mode return control unit returns to the normal mode from a control processing step following the latest control processing step based on information stored in the storage unit after power recovery after a power failure occurs The operation is restarted.

In the elevator control device according to the fifth aspect of the present invention, if a power failure occurs while a series of return controls from the inspection mode to the normal mode is being advanced by the normal mode return control means, the storage means is already in place when the power failure occurs. Since the latest control processing stage in which processing has been completed is stored, the normal mode return control means performs control processing steps following the latest control processing step based on information stored in this storage means after power recovery after a power failure occurs. From the normal mode, the control for returning to the normal mode is not delayed, and the safety of the worker can be ensured.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a functional configuration of an elevator control device according to one embodiment of the present invention. The elevator control device according to this embodiment includes an operation control device 10 that controls the entire operation of the elevator. The operation control device 10 is provided with an input device 11, a safety circuit 12, a car position detection device 13, a call processing Device 14, door control device 1
5, a notification device 16, a speed control device 17, a position pulse generation device 18, and a battery backup storage device 19 are connected.

The input device 11 performs an input process of an operation signal by a control console, a control panel switch, an in-car switch, an on-car switch, and the like. The safety circuit 12 performs a fail-safe safety operation at the time of a power failure or a failure. The car position detecting device 13 detects a car position. The call processing device 14 performs call registration processing such as a car call, a hall call, a VIP call, and a handicapped call. The door control device 15 is a car door,
Controls opening and closing of landing doors. As the notification device 16, one or more of a voice synthesizer, a warning buzzer, a warning lamp, a warning display board, a display device, and a voice guidance device are used.

The speed control device 17 controls the rated speed, low speed, and very low speed in accordance with an instruction from the operation control device 10. The position pulse generator 18 generates a pulse signal according to the car moving distance. The storage device 19 stores a car position, a control processing stage, and other information received from the operation control device 10. The stored content is backed up by the battery power even when the system power is lost.

Next, the operation of the elevator control device having the above configuration will be described with reference to the flowcharts of FIGS. When the operator issues an inspection mode command from the input device 11, the operation control device 10 processes the inspection mode command as a normal service prohibition command for the elevator, and the operation control device 10 requires all or some of the devices 12 to 19 to operate. Command, and receives necessary signals to operate in the inspection mode. In this inspection mode, the elevator car is moved at a low speed (for example, 15 m /
Minute, 3m / min near the floor) and stop at any place.

When the inspection work is completed and an operator issues an inspection mode stop command from the input device 11, the operation control device 10 processes the command as an elevator normal service return command (normal mode return command). Apparatus 12 ~
Necessary commands are transmitted to all or a part of 19, and necessary signals are received to return to the operation in the normal mode.

The return control processing from the operation in the inspection mode to the return to the operation in the normal mode is performed according to the procedure shown in the flowcharts of FIGS. When a command to inhibit the execution of the return control process is input to the operation control device 10 in advance from the input device 11 by an operator's operation, the process after step S5 is not performed and the return after the end of the inspection mode of the present invention. Release all control processing (step S1,
S2, S3). As a result, the return from the inspection mode to the normal mode is performed as usual, and the input device 1
When the operation mode is switched from the inspection mode to the normal mode in step 1, the operation control device 10 receives the switching signal, checks the safety of the landing door by the door control device 15, activates the re-level, and automatically starts the car floor. The elevator car is moved until the level matches the landing floor level, and the operation shifts to the operation in the normal mode.

[0024] With this, it is possible to return from the inspection mode to the normal mode as necessary while installing the return control processing function for ensuring the safety of the worker, which will be described later. Can quickly respond to the case where a function confirmation test is performed.

When a command to prohibit execution of the return control process has not been input from the input device 11 to the operation control device 10 in advance (normally, the process automatically enters this process sequence for fail-safe operation). First, the state of the inspection mode command is sent from the input device 11 to the operation control device 10 to detect whether or not the inspection mode command has been canceled (steps S1 and S5). If the cancellation of the inspection mode command is not detected, the state of the emergency stop command is input by the input device 11, and it is similarly detected whether the emergency stop command has been canceled (step S6). Here, whether or not the inspection mode command or the emergency stop command has been canceled is determined by comparing each command before one process with each current command. The operation control device 10 reads the contents stored in the storage device 19 and executes the above determination.
By doing so, even if each command of the input device 11 is canceled during the power failure, it is possible to detect a change in the state of each command after the power is restored.

The operation control device 10 that has received the release of the inspection mode command or the release of the emergency stop command sets the safety mode command (step S7), and sets the elevator car floor level to the floor level of the landing floor. In order to restrict the movement of the elevator car by the operation for a predetermined time (here, 5 seconds), a re-level prohibition command is issued (steps S8 and S9).

Further, the operation control device 1 is input from the input device 11.
If the notification prohibition command has not been transmitted in advance for 0, an alarm command is transmitted to the notification device 16 to output an alarm notifying the end of the inspection mode (steps S11 and S12). Conversely, if the notification prohibition command is set, the operation control device 10 sends an alarm release command to the notification device 16 to stop the alarm (step S11,
S13). By this, if the notification device is to notify only by sound like a warning buzzer, after handing over the customer,
There is no danger of giving general users discomfort due to noise.

If the restriction time of the re-level operation in step S8 has elapsed, the re-level inhibition is released (step S1).
0), the warning command is also canceled (step S13).

Next, the operation control device 10 includes an input device 11,
A general service prohibition command is sent to the call processing device 14 and the door control device 15, and each of the devices 11 to 15 receiving the general service prohibition command prohibits the call input process, the call response process, and the automatic door opening / closing control. Then, the return process is continued (step S14).

When the re-leveling operation is started after the re-leveling operation prohibition time in step S8 has elapsed, the operation control device 10 moves the elevator car to the level of the nearest floor. It is determined from the signal of the car position detecting device 13 whether the car has landed on the nearest floor level, and if it has not landed, the above processing is repeated until landing (step S15). Then, when the person arrives at the level of the nearest floor by the re-level operation, a certain fixed time (here, 10 seconds) elapses thereafter, or a door fully open signal is transmitted from the door control device 15 to the operation control device 10. (Steps S16 and S1)
7) Then, the operation control device 10 releases the safety mode and returns to the general service (Step S4).

It is to be noted that the fixed restraint time is set after landing on the nearest floor by the re-level operation in step S16 and the general service is prohibited until the door is fully opened because the inspection mode release command is issued. If the elevator car is already level stopped at the landing floor, re-level operation does not occur, so even if control to return to normal mode is started in such a state, the operator should be notified of the end of inspection mode without fail. And give them enough time to take the necessary actions to ensure safety.

Next, the re-level operation control executed before returning from the inspection mode to the normal mode will be described with reference to the flowchart of FIG. In the elevator control device of the present invention, an inspection mode release command is issued during the operation in the inspection mode, and in the return control until the operation control device 10 returns to the operation in the normal mode, the elevator car is near the level (a certain landing). Re-level operation control is performed differently when the vehicle is located in the door zone on the floor) and when the vehicle is located far away (between floors).

First, upon detecting that the elevator car has stopped based on a signal sent from the position pulse generator 18 to the operation control device 10 (step S21), the operation control device 10 issues the above-described re-level operation inhibition command. It is determined whether it is during the activation period, and if it is during the re-level operation prohibition period, the following processing is invalidated and the prohibition of the re-level operation prohibition in the door zone is canceled (step S22).

When the prohibition of the re-level operation is released, the flow branches to YES in step S22, and the car position detected by the car position detecting device 13 is within the door zone (here, within ± 200 mm with respect to the landing floor level). (Step S23), and if the door state sent from the door control device 15 is the door closed state (step S2).
4) The elevator car is moved at a very low speed (for example, 3 m / min) in a direction in which the car floor level matches the landing floor level (step S25).

Thereafter, if the safety mode command is set, the door is once opened after landing on the nearest floor (steps S26, S27). If the safety mode is not set, the door is re-leveled in the normal door zone, and the door is not opened (steps S26 and S28).

On the other hand, if the stop position of the elevator car is outside the door zone (branch to NO in step S23), if the above-mentioned safety mode command is set (step S34), the elevator car is moved to the lowest floor (lower). It starts moving at a low speed (for example, 15 m / min) in the direction (step S35), and after landing on the level of the nearest floor in the downward direction, the door is once opened (step S37). If it is not the safety mode, the floor is at the normal level between floors and the door is not opened (steps S36 and S38).

As described above, in the elevator control apparatus according to the present embodiment, when returning from the inspection mode to the normal mode, the service is not immediately shifted to the general service, but is provided with a predetermined restraint time so that the inspection operator can have extra time. , The re-level operation is performed, and also in this case, the operator can be moved in a direction safe and at a low speed to ensure the safety of the operator.

The numerical values of the slow speed and the slow speed shown in the above embodiment are examples, and the present invention is not limited to these values. Further, it is possible to further increase the restraint time.

[0039]

As described above, according to the first aspect of the present invention,
When the inspection operation is completed by the inspection operation and an inspection mode stop command is issued to return to the normal mode, the elevator is restrained for a predetermined time without immediately shifting to the normal mode, and the operator returns to the normal mode To allow the operator to return to normal mode operation after giving time to confirm safety and to ensure safety by allowing workers to respond to returning to normal mode operation with plenty of time. Can be achieved.

According to the second aspect of the present invention, the cancellation of the inspection mode is notified in response to the inspection mode stop instruction. Therefore, when a third party operates the inspection mode instruction means and issues the inspection mode stop instruction. Also, it is possible to make other workers surely recognize that the inspection mode is canceled and the operation returns to the normal mode.

According to the third aspect of the present invention, when the inspection mode stop command is received, the floor alignment operation is performed on a predetermined floor below the car position at that time. When returning to the normal mode, the elevator car always starts to move downward, so that the worker working on the elevator car does not get caught between the landing entrance and the car, and safety can be ensured.

According to the fourth aspect of the invention, when the inspection mode stop command is received, the floor alignment operation is performed at a low speed or a very low speed regardless of the car position, so that the operation shifts to the operation in the normal mode. Even before the elevator car starts to move in the floor alignment operation before the operation, the worker can be given time to take an action necessary for ensuring safety.

According to the fifth aspect of the present invention, if a power failure occurs during a series of return control operations from the inspection mode to the normal mode, the storage means stores the latest processing which has already been completed when the power failure occurred. Since the control processing stage is stored,
Based on the information stored in the storage means after the power failure after the power failure occurs, the return operation to the normal mode can be restarted from the control processing stage following the latest control processing stage, and the return control to the normal mode is performed more than necessary. It is possible to ensure the worker's safety without delay.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration according to an embodiment of the present invention.

FIG. 2 is a flowchart of a first half of a return control from an inspection mode to a normal mode according to the embodiment.

FIG. 3 is a flowchart of the latter half of the return control.

FIG. 4 is a flowchart of a relevel operation in the embodiment.

[Explanation of symbols]

 Reference Signs List 10 operation control device 11 input device 12 safety circuit 13 car position detection device 14 call processing device 15 door control device 16 notification device 17 speed control device 18 position pulse generation device 19 storage device

Claims (5)

[Claims] 1. Inspection mode command means for issuing an inspection mode command and a stop command thereof, and inspection operation means for receiving the inspection mode command, prohibiting operation of the elevator in a normal mode, and operating the elevator in the inspection mode. An elevator control device comprising: normal mode return control means for receiving the inspection mode stop command, restricting the movement of the elevator for a predetermined time, and thereafter returning to operation in the normal mode. 2. The elevator control device according to claim 1, further comprising a notifying unit for notifying the cancellation of the inspection mode in response to the inspection mode stop command. 3. The normal mode return control means, upon receiving the inspection mode stop command, performs a floor alignment operation for a predetermined floor below a car position at that time. Or the elevator control device according to 2. 4. The elevator control apparatus according to claim 3, wherein the normal mode return control means performs the floor alignment operation at a low speed or a low speed regardless of the car position. 5. A storage unit with a backup power supply for storing the latest control processing stage of the normal mode return control performed by the normal mode return control unit, wherein the normal mode return control unit operates after a power failure occurs. The method according to any one of claims 1 to 4, wherein a return operation to the normal mode is restarted from a control processing stage following the latest control processing stage based on information stored in the storage unit after the power is restored. Elevator control device.