CN108163650A - Elevator control gear and elevator control method - Google Patents

Abstract

The elevator control device of the present invention can control the stop position of the car with high precision even if the mechanism components such as the attenuation structure of the governor system are in a degraded state when controlling the operation of the elevator. Based on the output of the pulse generator installed in the governor, the position of the car is calculated, and the leveling control when the car stops at each floor is performed based on the calculated car position. Here, based on the judgment result of the output of the pulse generator when the car is stopped, the abnormality of the governor system is judged. The method is changed to another control method.

Description

Elevator control device and elevator control method

technical field

The invention relates to an elevator control device and an elevator control method.

Background technique

A governor is arranged in the elevator as a mechanism for detecting the lifting speed and lifting position of the car. The endless governor rope (endless governor rope) that moves in conjunction with the lifting and lowering of the car is wound around the governor, and the pulse generator (rotary encoder) installed in the governor responds to the moving state of the governor rope (that is, the moving state of the car) for detection.

The elevator control device can accurately determine the position of the car by monitoring the value detected by the pulse generator provided in the governor. For example, it can be judged whether the car that stops at each floor stops at the correct position on the ground of the floor, or whether it is in a state deviated from the ground of the floor by several millimeters or so. Based on this determination, the elevator control device can perform stop position control that accurately corrects the position of the car when it stops at each floor.

Patent Document 1 describes a technique for detecting a stop position of a car using a pulse generator provided in a governor.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 9-12245

Contents of the invention

The technical problem to be solved by the invention

The length of the governor cable tends to become longer with the increase in the height of the building in which the elevator is installed, and the governor cable arranged long tends to vibrate. Specifically, when the resonance frequency of the main rope that moves the car in the vertical direction is lowered close to the resonance frequency of the governor rope, the vibration of the main rope is transmitted to the governor rope, and the governor may generate Abnormal vibration. A damping mechanism is arranged in the governor system composed of a governor, etc., and the damping mechanism is configured to suppress the vibration of the governor cable, so that even if the main cable vibrates during normal operation, the governor cable will not vibrate. . However, when the components constituting the damping mechanism deteriorate, the function of suppressing the vibration of the governor cable may not work sufficiently.

When the governor cable vibrates abnormally, the accuracy of the leveling operation when the station position control is performed based on the value detected by the pulse generator provided in the governor deteriorates. Therefore, it is not desirable to continue the operation of the elevator in a state where the damping mechanism of the reducer rope has deteriorated. Conventionally, the deterioration of the attenuation mechanism of the governor rope was judged by the operator during the inspection work of the elevator, and the deterioration could not be detected automatically.

The present invention has been made in view of the above problems, and its object is to accurately determine the stop position of the car even when the mechanism components of the governor system are degraded when controlling the operation of the elevator. control.

Technical solutions adopted to solve technical problems

In order to solve the above-mentioned problems, for example, the structure described in the patent claims is adopted.

The present application includes a plurality of methods for solving the above-mentioned problems. If one of the examples is cited, it is characterized in that it includes: a car position calculation unit, and the car position calculation unit is based on a speed regulating unit that is wound and connected to the car. The output of the pulse generator of the speed governor of the cable is used to calculate the position of the car; the leveling command unit, the leveling command unit, based on the car position calculated by the car position calculation unit, stops the car to each The leveling of the floor is controlled; the governor abnormality determination part judges the abnormality of the governor system based on the determination result of the output of the pulse generator when the car is stopped; and the leveling A method setting unit that changes the method of the leveling control in the leveling command unit to another control method different from the normal time when the governor abnormality determination unit determines abnormality.

Invention effect

According to the present invention, it is possible to judge an abnormality such as deterioration of the damping mechanism included in the speed governor system, and based on the judgment result, switch to a stop position that does not use the output of the pulse generator provided in the speed governor, thereby enabling constant Perform high-precision stop position control.

Problems, configurations, and effects other than those described above will be further clarified through the description of the following embodiments.

Description of drawings

Fig. 1 is a configuration diagram showing an example of an elevator control device and an elevator according to an embodiment of the present invention.

Fig. 2 is a block diagram showing an example of hardware of an elevator control device according to an embodiment of the present invention.

FIG. 3 is a configuration diagram showing an example of a position detector and a subject according to an embodiment of the present invention.

FIG. 4 is an explanatory view showing a state in which a position detector according to an embodiment of the present invention detects the position of a subject.

5 is a flowchart showing a flow (example 1) of abnormality determination processing in the governor system according to an embodiment of the present invention.

6 is a flowchart showing a flow (example 2) of governor abnormality determination processing according to an embodiment of the present invention.

Fig. 7 is a characteristic diagram showing an example of the speed detected when the elevator according to the embodiment of the present invention stops.

8 is a flowchart showing a flow (example 3) of governor abnormality determination processing according to an embodiment of the present invention.

Detailed ways

Hereinafter, an embodiment example (hereinafter referred to as "this example") of the present invention will be described with reference to the drawings.

[1. Overall structure]

Fig. 1 shows an example of the overall configuration of an elevator control device of this example and an elevator controlled by the elevator control device.

An elevator car 1 is connected to one end of a main rope 9, and moves up and down in an elevator shaft 11 by driving a motor 12 around which the main rope 9 is wound. The other end of the main cable 9 is connected with a counterweight 10 . The motor 12 is equipped with a pulse generator 13 that outputs pulses synchronized with the rotation of the motor 12 .

The raising and lowering of the car 1 by the rotation of the motor 12 is controlled by the elevator control device 20 .

Furthermore, the car 1 of the elevator is connected to an endless governor cable 2 . The governor cable 2 is wound around the governor 3 arranged on the upper end side of the elevator shaft 11, and also wound on the governor weight pulley (weight pulley) 5 arranged on the lower end side of the elevator shaft 11, and the car 1 to move in conjunction with the lift. The governor weight pulley 5 applies tension to the governor cable 2 and is provided with a damping mechanism 6 .

The governor 3 is equipped with a pulse generator 4 that outputs pulses synchronized with the movement of the governor cable 2 . Since the governor cable 2 is connected to the car 1 , the pulse output from the pulse generator 4 becomes a pulse synchronized with the raising and lowering of the car 1 .

In addition, in the following description, the governor cable 2, the governor 3, the pulse generator 4, the governor weight pulley 5, and the damping mechanism 6 are collectively called a governor system.

To-be-detected objects 7 are arranged on each stop floor of the car 1 in the elevator shaft 11, and the car 1 is equipped with a position detector 8 for detecting the to-be-detected objects 7. FIG. When the car 1 stops at each floor, the elevator control device 20 performs a process of setting a stop position based on the state of the object 7 detected by the position detector 8 .

In addition, the elevator control device 20 performs leveling control for controlling the position of the floor of the car 1 to match the floor of each floor while the car 1 is stopped at each floor. That is, the load of the car 1 that stops at each floor and is in the state with the door open may change due to the up and down of passengers. Even if there is such a load change, leveling control is required so that the car 1 The position of the floor is consistent with that of each floor.

The elevator control device 20 includes a car position calculation unit 21, a speed governor abnormality determination unit 22, a leveling method determination unit 23, and a leveling instruction unit 24 for leveling control. In addition, in FIG. 1, the structure other than the leveling control of the elevator control apparatus 20 is abbreviate|omitted.

The car position calculation unit 21 performs a car position calculation process of calculating the lifting position of the car 1 based on the count value output from the pulse generator 4 attached to the speed governor 3 . The data on the lift position of the car 1 calculated by the car position calculation unit 21 is supplied to the speed governor abnormality determination unit 22 and the leveling command unit 24 .

The speed governor abnormality determination part 22 judges whether there is an abnormal speed governor in the speed governor system based on the count value output by the pulse generator 4 and the count value output by the pulse generator 13 connected to the motor 12, etc. Exception judgment processing. In addition, a specific example of the process for determining abnormality by the governor abnormality determination unit 22 will be described later.

The leveling method determination unit 23 instructs the leveling command unit 24 to switch the leveling control method if there is an abnormality based on the determination result of whether there is an abnormality in the governor abnormality determination unit 22 . Therefore, the leveling method determination unit 23 functions as a leveling method setting unit that sets the leveling method.

The leveling command unit 24 performs a leveling command generation process based on the position of the car 1 calculated by the car operation calculation unit 21, and the leveling command generation process outputs an output for the car 1 that is stopping at each floor. Instructions for leveling control. Then, based on this leveling control, a command for raising and lowering is output to the motor 12 . Among them, the leveling instruction unit 24 performs leveling control based on the position of the car 1 calculated by the car position calculation unit 21 in normal times. When another leveling method is instructed by the leveling method determination unit 23, it switches to the instructed leveling method. In addition, the leveling instruction unit 24 also prepares a method of performing leveling control based on the position of the object 7 detected by the position detector 8 . The leveling instruction unit 24 performs leveling control based on the position of the object 7 detected by the position detector 8 when another leveling method is instructed by the leveling method determination unit 23 . However, it is also possible to prepare a method in which the leveling command unit 24 performs leveling control by another method.

[2. Example of hardware structure of elevator control device]

FIG. 2 shows an example of the hardware configuration of the elevator control device 20 . The elevator control device 20 is constituted by a computer device C, for example.

The computer device C includes a CPU (Central Processing Unit: Central Processing Unit) C1, a ROM (Read Only Memory: Read Only Memory) C2, and a RAM (Random Access Memory: Random Access Memory) C3 respectively connected to a bus C4. In addition, the computer device C includes a display unit C5, an operation unit C6, a nonvolatile memory C7, and a network interface C8.

CPUC1 reads and executes the program code of the software which realizes each function with which the elevator control apparatus 20 of this example is equipped with from ROMC2. Variables, parameters, etc. generated during operation processing are temporarily written into RAMC3. For example, in the elevator control device 20, CPUC1 performs leveling control by reading the program memorize|stored in ROMC2.

As the nonvolatile memory C7, for example, HDD (Hard Disk Drive: Hard Disk Drive), SSD (Solid State Drive: Solid State Drive), floppy disk, optical disk, optical disk, CD-ROM, CD-R, magnetic tape, and non-volatile memory are used. volatile memory, etc. In this nonvolatile memory C7, in addition to OS (Operating System: Operating System) and various parameters, a program for causing the computer device C to function as an elevator control device is recorded.

The network interface C8 uses, for example, a NIC (Network Interface Card: Network Interface Card) or the like, and can transmit and receive various data via a LAN (Local Area Network: Local Area Network) connected to the terminal, a dedicated line, and the like. For example, the count value output by the pulse generators 4 and 13, the operation information of the button in the car 1 or the call button of each floor, etc. are acquired via the network interface C8. In addition, it is also possible to communicate with an external device via the network interface C8. For example, the computer device C constituting the elevator control device 20 communicates with a monitoring center that manages elevators.

The display unit C5 and the operation unit C6 are used during elevator maintenance work. For example, the display part C5 displays the operation state of an elevator, etc., and the operation part C6 performs an input operation to an operation mode etc. In addition, depending on the configuration of the elevator control device 20, the display unit C5 and the operation unit C6 may not be provided either.

[3. Example of position detector and object to be detected]

FIG. 3 shows an example of the position detector 8 arranged in the car 1 and the object 7 detected by the position detector 8 . The objects 7 to be detected are installed on the respective stopping floors of the elevator shaft 11 .

As shown in FIG. 3 , three photoreceivers 81 , 82 , and 83 are arranged horizontally in the position detector 8 . These three photoreceivers 81, 82, 83 are configured to detect light from a light emitter (not shown), and the object 7 to be detected does not exist between the light emitter and each photoreceiver 81, 82, 83. Next, each light receiver 81, 82, 83 detects light.

The subject 7 has a notch 7 a on the upper side, and also has a notch 7 b on the lower side. The positions of the removed parts of the upper notch 7a and the lower notch 7b are different, and the light receiving states of the three photoreceivers 81, 82, 83 are generated according to the relative positions of the position detector 8 and the object 7 to be detected. Variety.

For example, when the lifting position of the car 1 is a position where the upper side of the object 7 formed with the notch 7a overlaps with the position detector 8, the light receivers 81, 82 are blocked by the object 7, and only the light receivers 83 received light. In addition, when the ascending and descending position of the car 1 is a position where the substantially central portion of the subject 7 overlaps the position detector 8, all the light receivers 81, 82, and 83 receive no light. In addition, when the lifting position of the car 1 is a position where the lower side of the detection object 7 formed with the notch 7b overlaps the position detector 8, the light receivers 81, 83 are blocked by the detection object 7, and only the light receivers 82 received light.

The elevator control device 20 acquires information on the light receiving states of the three light receivers 81, 82, and 83 of the position detector 8, and stops the car at each floor based on the acquired information.

FIG. 4 shows an example of the relative positions of the subject 7 and the position detector 8 .

Here, the line La on which the three photoreceivers 81, 82, and 83 of the position detector 8 are arranged is set as a reference position.

Then, four positions h1 , h2 , h3 , and h4 are set between the upper end and the lower end of the subject 7 . The position h1 is the upper end of the subject 7 . The position h2 is the lower end of the notch 7 a of the subject 7 . The position h3 is the upper end of the notch 7 b of the subject 7 . The position h4 is the lower end of the subject 7 . Here, when the line La of the reference position of the position detector 8 becomes the intermediate position h0 between the position h2 and the position h3, the car 1 stops at a correct position on each floor.

For example, when the elevator control device 20 stops the car 1 at a predetermined floor while descending, it detects the position h1 when the two light receivers 81 and 82 receive light, and detects the position h1 when the light receiver 83 receives light. The position h2 is detected. The elevator control device 20 stops the car 1 at the position h0 by further moving the car 1 by a predetermined distance from the time when the position h2 is detected.

When the car 1 is stopped at a predetermined floor during ascent, the elevator control device 20 similarly detects the positions h4 and h3 based on the states of the three light receivers 81, 82, and 83, and starts from the time when the position h3 is detected. The elevator control device 20 stops the car 1 at the position h0 by further moving the car 1 by a predetermined distance.

After the elevator control device 20 stops the car 1 at the position h0, the leveling command unit 24 of the elevator control device 20 performs leveling control. At this time, the leveling command unit 24 performs control to adjust the lifting position of the car 1 based on the position of the car 1 calculated by the car position calculation unit 21 using the output of the pulse generator 4 . Wherein, when there is an instruction to use another leveling control method from the leveling method determination unit 23, the leveling command unit 24 uses the position detector 8 to detect the position of the object 7 (the above-mentioned positions h1, h2, h3, h4) detection, to adjust the control of the lifting position of the car 1.

[4. Example of switching processing of leveling control (example 1)]

FIG. 5 is a flowchart showing an example (example 1) of switching processing of leveling control performed by the elevator control device 20 .

First, the elevator control device 20 judges whether or not the car 1 being raised and lowered performs a stop operation to stop at any floor (step S11). When it is not the time to enter the stop operation from the ascending and descending (step S11: NO), it waits until the stop operation.

When it is determined in step S11 that it is time to stop (Yes in step S11), the elevator control device 20 determines whether the position detector 8 has detected the position h1 of the upper end or the position h4 of the lower end of the object 7 on the stop floor ( Fig. 4) (step S12). Here, when the position h1 or the position h4 is not detected (step S12: No), the elevator control apparatus 20 waits until the position h1 or the position h4 is detected.

When the position h1 or position h4 is detected in step S12 (step S12 is yes), the elevator control device 20 obtains the output of the pulse generator 4 installed in the governor 3 at the moment when the position h1 or position h4 is detected. The count value of (step S13). This count value is obtained by the car position calculation unit 21 .

Next, the speed governor abnormality determination unit 22 determines whether the count value of the pulse generator 4 corresponding to the position of the car 1 acquired by the car position calculation unit 21 deviates from the range of a predetermined reference threshold value (step S14) .

Here, when it is determined in step S14 that it is within the range of the reference threshold value (NO in step S14), since the governor system is normal, the leveling method determination unit 23 does not instruct switching of the leveling control operation. .

On the other hand, when it is determined in step S14 that it is outside the range of the reference threshold value (YES in step S14), the leveling method determination unit 23 switches the leveling command unit 24 to the one using the position detector 8. Indication of detected leveling control (step S15). In this step S14, when the range of the reference threshold value is out of range, it is assumed that the governor cable 2 is in a state of abnormal vibration due to, for example, a decrease in the performance of the damping mechanism 6 of the governor system.

The leveling command unit 24 that has received the switching instruction performs leveling control based on the position detected by the position detector 8 .

Then, the elevator control device 20 notifies an external monitoring center of the performance degradation of the damping mechanism 6 of the governor system (step S16).

[5. Example of switching processing of leveling control (example 2)]

FIG. 6 is a flowchart showing an example (example 2) of switching processing of leveling control performed by the elevator control device 20 .

In the flowchart of FIG. 6 , the processing in steps S21 , S22 , and S23 is the same as the processing in steps S11 , S12 , and S13 in FIG. 5 , and description thereof will be omitted.

Then, after the process of step S23, the elevator control device 20 determines whether the position detector 8 has detected the middle position h2 or the lower end position h3 of the object 7 on the stop floor ( FIG. 4 ). Here, when the position h2 or the position h3 is not detected (step S24: No), the elevator control apparatus 20 waits until the position h2 or the position h3 is detected.

When the position h2 or position h3 is detected in step S22 (step S24 is yes), the elevator control device 20 acquires the output of the pulse generator 4 installed in the governor 3 at the moment when the position h2 or position h3 is detected. The count value of (step S25). This count value is obtained by the car position calculation unit 21 of the elevator control device 20 .

Then, the governor abnormality determination unit 22 determines the difference between the count value acquired in step S23 and the count value acquired in step S25, and determines whether or not the difference deviates from the range of the predetermined reference threshold value. (step S26).

Here, when it is determined in step S26 that it is within the range of the reference threshold value (NO in step S26), since the governor system is normal, the leveling method determination unit 23 does not instruct switching of the leveling control operation. .

On the other hand, when it is determined in step S26 that it is outside the range of the reference threshold value (YES in step S26), the leveling method determination unit 23 switches the leveling command unit 24 to the one using the position detector 8. Indication of detected leveling control (step S27).

The leveling command unit 24 having received this switching instruction performs leveling control based on the position detected by the position detector 8 .

Then, the elevator control device 20 notifies an external monitoring center of the performance degradation of the damping mechanism 6 of the governor system (step S28).

[6. Example of switching processing of leveling control (example 3)]

7 is a characteristic diagram showing an example of the speed detected by the pulse generator 13 attached to the motor 12 and the speed detected by the pulse generator 4 attached to the governor 3 when the elevator car 1 stops. Next, an example (example 3) of switching processing for leveling control will be described based on the speed characteristics when the car stops shown in FIG. 7 .

First, with reference to FIG. 7 , the characteristics of the speed detected when the elevator car 1 stops will be described. The vertical axis of FIG. 7 is speed, and the horizontal axis is time.

When the ascending and descending car 1 stops at any floor, the speed V1 detected by the pulse generator 13 installed in the motor 12 gradually decreases until it reaches a certain low speed, and is maintained at the low constant speed. Operating status. Then, the elevator control device 20 makes the position of the car 1 coincide with the stop floor in the running state at a low constant speed, and stops the car 1 . At this time, the speed V1 of the car 1 becomes zero.

Here, the velocity V2 detected by the pulse generator 4 attached to the governor 3 is slightly different from the velocity V1 detected by the pulse generator 13 . That is, the speed V2 detected by the pulse generator 4 on the governor 3 side also decreases in conjunction with the speed V1 detected by the pulse generator 13 on the motor 12 side. However, even when the speed V1 is at a constant low speed, the speed V2 is temporarily lowered to a slightly lower speed, and then slowly returns to the same constant low speed as the speed V1.

The characteristic of the velocity V2 detected by the pulse generator 4 on the governor 3 side is the characteristic when the governor cable 2 does not vibrate normally, but when the governor cable 2 vibrates abnormally, it is as shown in FIG. 7 The characteristic speed V3 is shown.

That is, the normal speed V2 shows a behavior of gradually returning to the speed V1 after the difference gradually widens compared with the speed V1 on the side of the motor 12 . On the other hand, the velocity V3 when the governor cable 2 vibrates abnormally shows a behavior of returning to the velocity V1 after fluctuating in a short period under the influence of the abnormality of the governor cable 2 . Therefore, the governor abnormality determination unit 22 can determine the abnormality of the governor system by detecting the difference between the speed V2 and the speed V3 when the car 1 is stopped. Specifically, the speed governor abnormality determination unit 22 detects that there is a difference between the count value of the pulse generator 13 on the motor 12 side and the count value of the pulse generator 4 on the speed governor 3 side (as shown in FIG. 7 In the state where vibration occurs as shown), it is possible to judge the abnormality of the governor system.

Fig. 8 is a flowchart showing an example (example 3) of switching processing of leveling control performed by the elevator control device 20 to which the principle of performing abnormality judgment is applied.

In the flowchart of FIG. 8 , the processing in step S31 is the same as the processing in step S11 in FIG. 5 , and description thereof will be omitted.

Then, when it is judged in step S31 that it is time to stop (Yes in step S31), the governor abnormality determination unit 22 of the elevator control device 20 starts counting the output of the pulse generator 4 mounted on the governor 3. acquisition (step S32). Moreover, the governor abnormality determination part 22 starts acquisition of the count value output from the pulse generator 13 attached to the electric motor 12 (step S33).

Then, the governor abnormality determination unit 22 determines the difference between the change in the count value output by the pulse generator 4 and the count value output by the pulse generator 13, and determines whether there is a deviation in the difference (step S34). The state where there is a deviation in the difference here corresponds to the state where vibration occurs like the velocity V3 in FIG. 7 .

When it is determined in step S34 that there is no deviation in the difference (NO in step S34 ), the governor system is normal, and the leveling method determination unit 23 does not instruct switching of the leveling control operation.

On the other hand, when it is determined in step S34 that there is a deviation in the difference (YES in step S34), the leveling method determination unit 23 switches the leveling instruction unit 24 to the leveling method detected by the position detector 8. Indication of layer control (step S35).

The leveling command unit 24 having received this switching instruction performs leveling control based on the position detected by the position detector 8 .

Then, the elevator control device 20 notifies an external monitoring center of the performance degradation of the damping mechanism 6 of the governor system (step S36).

[7. The effect produced by switching the leveling control]

As described above, the governor abnormality determination unit 22 determines the abnormality of the governor system and switches the control method when the elevator control device 20 performs leveling control, so that even if the governor system is abnormal, It can also carry out accurate leveling control.

In addition, the governor abnormality determination unit 22 determines that the abnormal state of the governor system is that the components of the damping mechanism 6 for suppressing the vibration of the governor cable 2 have deteriorated and the governor cable 2 has abnormal vibration. In this state, the accuracy of leveling control deteriorates. Therefore, in the governor abnormality determination unit 22 of this example, by switching the leveling control to a control method using the position detected by the position detector 8 , deterioration of the accuracy of the leveling control is prevented.

In addition, in the case of this example, based on the determination of the abnormality of the governor system such as the damping mechanism 6, the abnormality of the governor system can be notified to the monitoring center, etc., so maintenance workers can be quickly dispatched replacement etc.

[7. Modified example]

In addition, in the above-mentioned embodiments, when the governor abnormality determination unit 22 determines that the governor system is abnormal, the leveling control based on the detection by the position detector 8 is performed as another leveling control different from the normal time. The leveling control of the position to be reached, however, it can also be switched to other leveling controls. For example, for example, a camera mounted on the car 1 may take pictures near the door, and recognize and detect the difference between the floor on the building side and the floor of the car 1 from the captured image to perform leveling control.

In addition, in the processing of Example 1, Example 2, and Example 3 shown in the flowcharts of FIG. 5 , FIG. 6 , and FIG. , and switch the leveling control, but multiple thresholds can also be set as the judgment threshold. For example, the speed governor abnormality determination unit 22 sets a range of the first threshold and a range of the second threshold wider than the range of the first threshold, and the detected value deviates from the range of the first threshold and is located at the second threshold. When it is within the range of , it is judged that the damping mechanism 6 is in a state where deterioration starts. In addition, the governor abnormality determination unit 22 determines that the damping mechanism 6 needs to be replaced when the detected value deviates from the range of the second threshold value. The process of switching the floor control may be performed either when a deviation from the first threshold is detected or when a deviation from the second threshold is detected.

Alternatively, the governor abnormality determination unit 22 may set three-stage abnormality thresholds to more precisely determine the degree of deterioration of the governor system such as the damping structure 6 .

In addition, in the above-mentioned embodiments, when the abnormality of the governor system is determined, the external monitoring center is notified, but the abnormality determination result of the governor system may be stored in advance in the elevator control device 20. storage device without notifying the monitoring center. In this case, when a maintenance worker performs a periodic inspection, etc., by checking the stored information of the abnormality determination result, it is possible to perform repairs such as parts replacement of the damping mechanism 6 to cope with it.

In addition, this invention is not limited to the above-mentioned embodiment example, Various modification examples are included. For example, in the above-mentioned embodiment example, it demonstrated in detail in order to explain in order to understand this invention easily, and it does not necessarily include all the structures demonstrated. In addition, a part of the structure of a certain embodiment can be replaced with the structure of another embodiment or a modification, and the structure of a certain embodiment can also be replaced with the structure of another embodiment or a modification. In addition, addition, deletion, and substitution of other configurations may be performed regarding a part of configurations of the embodiments.

In addition, with respect to each of the above-mentioned configurations, functions, processing units, processing units, etc., for example, a part or all of the above can be realized by using hardware and designing an integrated circuit. In addition, each of the above-mentioned configurations, functions, and the like can also be realized by using software by interpreting and executing a program that realizes each function by a processor. Information such as programs, forms, and files that realize each function can be stored in storage devices such as memory, hard disks, and SSDs (Solid State Drives), or recording media such as IC cards, SD cards, and DVDs.

In addition, control lines and information lines considered necessary for explanation are shown, but not all control lines and information lines on the product are necessarily shown. Practically all structures can be considered to be interconnected.

Label description

1 car, 2 governor cable, 3 governor, 4 pulse generator, 5 governor weight pulley, 6 attenuation mechanism, 7 object to be detected, 8 position detector, 9 main cable, 10 counterweight, 11 Elevator shaft, 12 motor, 13 pulse generator, 20 elevator control device, 21 car position calculation unit, 22 speed governor abnormality determination unit, 23 leveling method determination unit, 24 leveling instruction unit.

Claims (8)

1. An elevator control device, characterized in that, comprising: a car position calculation unit that calculates the position of the car based on an output of a pulse generator provided to a governor around which a governor cable connected to the car is wound; A leveling instruction unit, the leveling instruction unit controls the leveling when the car stops at each floor based on the car position calculated by the car position calculation unit; A governor abnormality determination unit that determines an abnormality of a governor system in which the governor is installed based on a determination result of the output of the pulse generator when the car is stopped. ;as well as a leveling method setting unit that changes the method of leveling control in the leveling command unit to be different from the normal time when the speed governor abnormality determination unit determines an abnormality; other control methods. 2. The elevator control device according to claim 1, wherein: The other control method is a control method in which a position detector installed in the car coincides with a position of a detection object installed in a stop floor of an elevator shaft of the car. 3. The elevator control device according to claim 1, wherein: A plurality of thresholds are provided as determination thresholds for determining an abnormality by the governor abnormality determination unit, and the governor abnormality determination unit determines by determining the output of the pulse generator using the plurality of thresholds. The degree of degradation of the damping mechanism provided at the governor weight pulley that applies tension to the governor cable. 4. The elevator control device according to claim 1, wherein: When the governor abnormality determination unit determines that it is abnormal, it notifies an external monitoring center of abnormality or deterioration of a damping mechanism provided in a governor weight pulley that applies tension to the governor cable. 5. The elevator control device according to claim 1, wherein: In the speed governor abnormality determination unit, a value of an output of the pulse generator when a position detector installed in the car detects an object installed in a stop floor of an elevator shaft of the car When it deviates from the preset threshold range, it is determined that the governor system is abnormal. 6. The elevator control device according to claim 1, wherein: In the speed governor abnormality determination unit, the pulse generator is activated when a position detector provided in the car detects a first position of a subject provided in a stop floor of an elevator shaft of the car. When the difference between the value of the output of the position detector and the value of the output of the pulse generator when the position detector detects the second position of the object deviates from the range of the preset threshold value, it is determined that the speed regulation The device system is abnormal. 7. The elevator control device according to claim 1, wherein: The governor abnormality determination unit compares an output of a pulse generator mounted on a motor driving the car with an output of a pulse generator provided in the governor to determine an abnormality of the governor system. . 8. An elevator control method, characterized in that, comprising: Car position calculation processing for calculating the position of the car based on an output of a pulse generator provided in a governor around which a governor cable connected to the car is wound; Leveling command generation processing, the leveling command generation process is based on the car position calculated by the car position calculation process, generating the leveling command when the car stops at each floor; A governor abnormality determination process for determining an abnormality of a governor system in which the governor is installed based on a determination result of the output of the pulse generator when the car is stopped. ;as well as A leveling method setting process for changing a method of generating a leveling control command when the leveling command generation process is performed when an abnormality is determined in the governor abnormality determination process. It is another control method different from usual.