JP2021127192A - Abnormality detection system and abnormality detection method - Google Patents

Abstract

To provide an abnormality detection system capable of properly detecting an elevator abnormality related to the identification of a car position.SOLUTION: An abnormality detection system has a first specific part capable of identifying a car position based on the detection of an identifying body by a first sensor, a second specific part capable of identifying a car position based on the information related to the position acquired by a second sensor which acquires the information related to the elevator car position, and a determination part to determine the abnormality of a detection mechanism based on the position identified by the first specific part and on the position identified by the second specific part.SELECTED DRAWING: Figure 1

Description

The present invention relates to an abnormality detection system and an abnormality detection method, and is suitable for application to, for example, an abnormality detection system and an abnormality detection method for detecting an abnormality in an elevator.

The elevator is controlled so that when the car arrives at the landing on each floor of the building, there is no step between the floor of the car and the floor of the landing. For example, control may be disturbed due to contact, earthquake, etc., and a step may occur. When a step occurs, it is necessary to adjust the operation control of the elevator because it interferes with getting on and off the car. Therefore, when a step occurs, it is required to detect it at an early stage.

In recent years, a position detection method having a simple structure and high accuracy has been proposed by using a magnetic material provided in a landing and a magnetic sensor provided in a car (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-155623

In the position detection method described in Patent Document 1, the position of the magnetic sensor provided in the car is also changed when the position of the magnetic body provided in the landing is changed due to aging, external factors, or the like. It is not taken into consideration when there is. In the position detection method described in Patent Document 1, when there is a change in the magnetic body or a change in the magnetic sensor, a different value is obtained between the detected position and the step on the floor surface of the actual landing and the floor surface of the car. May be detected.

The present invention has been made in consideration of the above points, and an object of the present invention is to propose an abnormality detection system or the like capable of appropriately detecting an abnormality of an elevator related to identification of a car position.

In order to solve such a problem, the present invention includes an discriminator provided in the hoistway of the elevator and a first sensor provided in the car of the elevator to detect the discriminator. An abnormality detection system including a detection mechanism that can identify the position of the car based on the detection of the discriminator by the first sensor, and a car of the elevator. A second specific part capable of specifying the position of the car based on the information related to the position acquired by the second sensor that acquires the information related to the position of, and a position specified by the first specific part. And a determination unit for determining an abnormality of the detection mechanism based on the position specified by the second specific unit.

In the above configuration, for example, when the position of the car is specified by the sensor value of the second sensor and the specific result by the sensor value of the first sensor is not normal, the abnormality of the detection mechanism is determined. be able to. For example, according to the above configuration, there is an abnormality in the detection mechanism, such as the position of the discriminator provided on the predetermined floor is fluctuating, the position of the first sensor provided in the car is fluctuating, and the like. When, by outputting as the position of the car specified by the first specific unit is incorrect, it is possible to avoid erroneous detection of the position of the car based on the sensor value of the first sensor. Become.

According to the present invention, a highly reliable abnormality detection system can be realized.

It is a figure which shows an example of the abnormality detection system by 1st Embodiment. It is a figure which shows an example of the structure which concerns on the measurement processing apparatus by 1st Embodiment. It is a figure which shows an example of the abnormality detection processing by 1st Embodiment. It is a figure which shows an example of the relationship between the operation state of a car, the magnetic flux density, and acceleration by 1st Embodiment. It is a figure which shows an example of the relationship between the operation state of a car, the magnetic flux density, and acceleration by 1st Embodiment. It is a figure which shows an example of the relationship between the moving distance of a car and the height of each floor by 1st Embodiment. It is a figure which shows an example of the correlation between the landing deviation by a magnetic sensor and the landing deviation by an acceleration sensor according to the first embodiment. It is a figure which shows an example of the content of the correction processing by 1st Embodiment.

(1) First Embodiment The following drawings describe in detail one embodiment of the present invention. The present embodiment relates to a technique for specifying the position of the car and confirming the soundness of the specified position.

The abnormality detection system for the elevator according to the present embodiment includes, for example, an discriminator provided in the hoistway, a detection mechanism including a first sensor for detecting the discriminator, and a car. A second sensor for identifying a position and a measurement processing device for processing signals obtained from the first sensor and the second sensor are provided.

In this abnormality detection system, it is possible to detect an abnormality in the elevator, for example, that the position where the discriminator or the first sensor is attached has changed. Further, in this abnormality detection system, for example, when a change occurs in the mounting position, it is possible to prevent detection of an abnormal value by adding correction (correction processing).

Here, the first sensor is a sensor for specifying the position of the car, such as a magnetic sensor, an optical sensor, and a radio wave sensor. The second sensor is a sensor for identifying the position of the car, such as an acceleration sensor and a barometric pressure sensor.

The first sensor may be the same as the second sensor, but may be different from the second sensor, for example, the accuracy of the position of the car to be specified is higher than that of the second sensor.

Further, the discriminator is an object detected by the first sensor to specify the position of the car, and is a magnetic body, a marker (for example, a scale), an RF (Radio Frequency) tag, or the like. One or more discriminators are provided in the hoistway.

In the present embodiment, the case where one discriminator is provided on all floors will be described as an example, but any number of discriminators may be provided at any place. Further, in the present embodiment, as the combination of the discriminator and the first sensor, a case where a magnetic material and a magnetic sensor are used will be described as an example, but other combinations may be used.

Further, in the present embodiment, a case where an acceleration sensor is used as the second sensor will be described as an example, but the type of the sensor does not matter.

Further, in the present embodiment, as the abnormality of the elevator, the abnormality of the discriminator and the abnormality of the first sensor will be described as an example. The abnormality of the discriminator includes a change in the position of the discriminator, a decrease in the discriminating power (for example, magnetic force, visibility, radio wave intensity) of the discriminator, a drop of the discriminator, and the like. Further, the abnormality of the first sensor includes a change in the position of the first sensor, a failure of the first sensor, and the like.

In the following description, when the same type of elements are not distinguished, the common part (the part excluding the branch number) of the reference code including the branch number is used, and the same type of elements are distinguished and described. In some cases, a reference code containing the branch number may be used. For example, when explaining without distinguishing the floors of the elevator, it is described as "floor 610", and when explaining by distinguishing individual floors, it is described as "floor 610-1" and "floor 610-2". May be described as.

In FIG. 1, 100 indicates an elevator abnormality detection system according to the first embodiment as a whole.

FIG. 1 is a diagram showing an example of an abnormality detection system 100.

The abnormality detection system 100 includes a car 101, a balance weight 102, a hoisting machine 103, a control device 104, a main rope 105, a magnetic sensor 106, a magnetic body 107, an acceleration sensor 108, and a measurement processing device 109.

By driving the main rope 105, the hoisting machine 103 raises and lowers the car 101 connected by the main rope 105 and the balance weight 102 in a slidable manner in the hoistway 110. The hoisting machine 103 increases or decreases the number of rotations based on the control signal from the control device 104, and raises and lowers and stops the car 101.

The magnetic sensor 106 is provided at the bottom of the car 101. The magnetic sensor 106 constantly measures the magnetic flux density of the magnetic body 107.

One magnetic material 107 is provided on the floor of the landing on each floor. The magnetic body 107 is, for example, a magnet, which may be screwed to the floor of the landing, may be attached to the floor of the landing by magnetic force, or may be adhered to the floor of the landing by an adhesive or the like. It may be a combination of these, or it may be provided by other means. Further, the magnetic material 107 has the maximum magnetic flux density detected by the magnetic sensor 106 at a position where a step (hereinafter referred to as “landing deviation”) between the floor surface 111 of the car 101 and the floor surface 112 of the landing is not formed. It is provided so as to be.

The acceleration sensor 108 is provided on the car 101 and measures the acceleration in the moving direction of the car 101.

The measurement processing device 109 receives the sensor value (magnetic flux density) detected by the magnetic sensor 106. Further, the measurement processing device 109 receives the sensor value (acceleration) detected by the acceleration sensor 108. Further, the measurement processing device 109 detects an abnormality of the magnetic body 107 and an abnormality of the magnetic sensor 106 based on the sensor value of the magnetic sensor 106 and the sensor value of the acceleration sensor 108.

FIG. 2 is a diagram showing an example of the configuration according to the measurement processing device 109.

The measurement processing device 109 is communicably connected to the magnetic sensor 106 and the acceleration sensor 108. The magnetic sensor 106 and the magnetic material 107 on each floor are components of the position detection mechanism 201 (an example of the detection mechanism) for detecting the position of the car 101.

The measurement processing device 109 is a computer such as a personal computer, a laptop computer, or a tablet terminal, and has a processor 210 such as a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and an HDD (Hard Disk Drive). ) Etc., a storage device 220, a communication device 230, and the like are included.

The functions of the measurement processing device 109 (measurement value storage unit 221, first specific unit 222, second specific unit 223, calculated value storage unit 224, determination unit 225, correction unit 226, etc.) include, for example, a CPU in the ROM. It may be realized by reading the stored program into RAM and executing it (software), or hardware such as FPGA (Field-Programmable Gate Array), ASIC (Application Specific Integrated Circuit), AI (Artificial Intelligence) chip, etc. It may be realized by a combination of software and hardware. Further, a part of the functions of the measurement processing device 109 may be realized by another computer capable of communicating with the measurement processing device 109.

The processor 210 is a device that performs arithmetic processing. The processor 210 is, for example, a CPU, an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit), an AI chip, or the like. The storage device 220 is a device that stores programs, data, and the like. The communication device 230 is a communication interface that communicates with another device via a communication medium.

The measured value storage unit 221 receives the magnetic flux density measured by the magnetic sensor 106 and the acceleration of the car 101 measured by the acceleration sensor 108, and stores (stores, saves) it in the storage device 220.

The first specific unit 222 mathematically processes the magnetic flux density of the magnetic sensor 106 stored by the measured value storage unit 221 to calculate and / or detect the landing deviation.

The second specific unit 223 performs mathematical processing on the acceleration of the car 101 of the acceleration sensor 108 stored by the measured value storage unit 221 to calculate the speed of the car 101 and the moving distance of the car 101, and arrives. Calculate and / or detect floor misalignment.

The calculated value storage unit 224 stores the value used for the calculation by the second specific unit 223 and the calculated value in the storage device 220 for each floor. Further, the calculated value storage unit 224 stores the value used for the calculation by the first specific unit 222 and the calculated value in the storage device 220 for each floor.

The determination unit 225 determines whether or not an abnormality has occurred in the position detection mechanism 201, whether or not correction processing by the correction unit 226 is necessary, and whether or not the correction processing by the correction unit 226 can handle the problem. ..

The correction unit 226 corrects the landing deviation (position of the car 101) calculated by the first specific unit 222 by using the value stored in the calculated value storage unit 224.

FIG. 3 is a diagram showing an example of a process (abnormality detection process) related to the detection of an abnormality of the position detection mechanism 201.

In step S301, the measurement processing device 109 determines whether or not the elevator has stopped on any floor (whether or not the car 101 has arrived based on the speed in the moving direction of the car 101, for example, the car. Whether or not the speed in the moving direction of 101 is "0") is determined. When the measurement processing device 109 determines that the elevator has stopped, the abnormality detection process ends, and when it determines that the elevator has not stopped, the process proceeds to step S302.

In step S302, the measurement processing device 109 calculates the landing deviation based on the sensor value of the magnetic sensor 106.

Here, an example of a method of calculating the landing deviation based on the sensor value of the magnetic sensor 106 will be described with reference to FIGS. 4 and 5. 4 and 5 are diagrams showing an example of the relationship between the magnetic flux density and the acceleration when the car 101 stops on a predetermined floor.

FIG. 4 is a diagram showing an example of the relationship between the operating state of the car 101, the magnetic flux density, and the acceleration when there is no abnormality in the elevator (for example, the magnetic sensor 106 and the magnetic body 107 are newly installed). be.

In the present embodiment, as shown in FIG. 4, the maximum value 401 of the magnetic flux density is stored in the storage device 220 as an initial value for each floor. The magnetic flux density (all the history of the magnetic flux density) related to all floors may be stored in the storage device 220.

FIG. 5 is a diagram showing an example of the relationship between the operating state of the car 101, the magnetic flux density, and the acceleration when the stop control of the car 101 is disturbed and there is a landing deviation.

For example, as shown in FIG. 5, the measurement processing device 109 stores the measured value 501 (for example, a constant value) of the magnetic flux density measured on the floor where the car 101 is stopped as an initial value. The landing deviation is calculated by the difference 502 from the maximum value 401 of the magnetic flux density.

In step S303, the measurement processing device 109 calculates the landing deviation based on the sensor value of the acceleration sensor 108.

Here, a method of calculating the landing deviation based on the sensor value of the acceleration sensor 108 will be described with reference to FIG.

FIG. 6 is a diagram showing an example of the relationship between the moving distance of the car 101 and the height of each floor. The acceleration sensor 108 is provided in the car 101 so that the acceleration in the moving direction of the car 101 can be measured.

The measurement processing device 109 calculates the moving distance 601 (L) of the car 101 from the acceleration of the car 101. Then, the measurement processing device 109 determines the difference from the floor height 611-1 (Pe) of the floor 610-1 after the movement by the car 101 to the floor height 611-2 (Ps) of the floor 610-2 before the movement. The landing deviation is calculated by comparing with the movement distance 601 calculated by the acceleration.

Here, the floor high price 611 indicates the height from the lowest floor to the target floor. As the floor height 611, the construction information of the building where the elevator is installed may be used, or the moving distance when traveling from the lowest floor to the target floor immediately after installing the acceleration sensor 108 is the floor height 611. It may be set as. The floor high price 611 of each floor is stored in the storage device 220.

In step S304, the measurement processing device 109 determines whether or not there is an abnormality in the position detection mechanism 201 (whether or not correction processing is necessary). When the measurement processing device 109 determines that the position detection mechanism 201 has an abnormality, the process shifts to step S306, and when it determines that the position detection mechanism 201 has no abnormality, the measurement processing device 109 shifts the process to step S305.

Here, there is a correlation between the landing deviation due to the magnetic sensor 106 and the landing deviation due to the acceleration sensor 108. Such a correlation will be described with reference to FIG.

FIG. 7 is a diagram showing an example of the correlation between the landing deviation due to the magnetic sensor 106 and the landing deviation due to the acceleration sensor 108. In FIG. 7, the left frame 710 shows a case where the position of the magnetic body 107 on the α-th floor fluctuates, and the right frame 720 shows a case where the position of the magnetic sensor 106 fluctuates.

The magnetic body 107 is installed at the landing on each floor, and the change in the position of one magnetic body 107 does not affect the position of the magnetic body 107 on the other floor.

For example, as shown in the frame 710 on the left side, when the position of the magnetic material 107 on the α-th floor (the floor) fluctuates in the m-th measurement 711, the implantation deviation due to the magnetic material 107 on the floor is detected. However, the landing deviation is not detected by the acceleration sensor 108. This indicates that the correlation on the α-th floor is broken, while on the floors other than the floor, there is no change in the correlation between the landing deviation by the acceleration sensor 108 and the landing deviation by the magnetic sensor 106. Further, on the floors other than the floor concerned, there is no change in the average value before and after the change in the position of the magnetic material 107. That is, when the position of the magnetic material 107 on the predetermined floor fluctuates, the correlation on the predetermined floor is broken, and the correlation on the floors other than the predetermined floor is not broken.

Further, for example, since the magnetic sensor 106 is provided in the car 101, it is calculated from the magnetic sensors 106 on all floors by changing the position of the magnetic sensor 106 as shown in the frame 720 on the right side. It has the same effect on landing deviation. For example, when the change in the position of the magnetic material 107 on all floors is detected in the nth measurement 721, the implantation deviation appears in the same manner on all floors. That is, when the position of the magnetic sensor 106 fluctuates, the correlation on all floors collapses in the same way.

Here, the m-th measurement 711 and the n-th measurement 721 (number of measurements) refer to measurements performed in a predetermined period (30 minutes, 1 hour, 1 day, etc.). In addition, when one measurement is performed a plurality of times for one floor, the last measured implantation deviation may be used, or the average implantation deviation may be used. good. However, the number of measurements may be the time when the car 101 is stopped. In this case, for example, when the position of the magnetic sensor 106 fluctuates, it is sequentially shown that the correlation after that time is broken on all floors.

In addition, the landing deviation may be at the landing level. Regarding the landing level, the range of the landing deviation is the first level when the landing deviation is in the first range, the second level when the landing deviation is in the second range, and so on. Information in which the landing level is associated with the landing level is stored in the storage device 220. That is, it may be determined whether or not the correlation is broken by comparing the landing level by the magnetic sensor 106 and the landing level by the acceleration sensor 108.

In this way, the measurement processing device 109 determines whether or not there is an abnormality in the position detection mechanism 201 based on the correlation between the landing deviation by the magnetic sensor 106 and the landing deviation by the acceleration sensor 108, and determines that the correlation is broken. If so, it is determined that the position detection mechanism 201 has an abnormality.

The measurement processing device 109 is not limited to the above-mentioned contents as to the method for determining the presence or absence of abnormality in the position detection mechanism 201. For example, when the measurement processing device 109 determines that the magnetic flux density could not be obtained for a predetermined floor, it determines that the magnetic material 107 on the predetermined floor has peeled off, and determines that the position detection mechanism 201 has an abnormality. You may. Further, for example, when the measurement processing device 109 determines that the magnetic flux density does not satisfy the threshold value for a predetermined floor, it determines that the magnetic force of the magnetic body 107 on the predetermined floor is weakened, and the position detection mechanism 201 determines that the magnetic force is weakened. It may be determined that there is an abnormality. Further, for example, the measurement processing device 109 may combine these to determine the presence or absence of an abnormality in the position detection mechanism 201.

In step S305, the measurement processing device 109 outputs the landing deviation calculated by the magnetic sensor 106 to the control device 104, and ends the abnormality detection process.

In step S306, the measurement processing device 109 determines whether or not the correction is possible. When the measurement processing device 109 determines that the correction is possible, the process is transferred to step S307, and when it is determined that the correction is not possible, the measurement processing device 109 shifts the process to step S308.

The case where the correction is possible is a case where the position of the magnetic body 107 is fluctuating, or a case where the position of the magnetic sensor 106 is fluctuating.

The cases where the correction is impossible are the cases where the magnetic flux density obtained from the magnetic sensor 106 does not satisfy the threshold value, the case where the magnetic flux density cannot be obtained from the magnetic sensor 106, the case where the acceleration sensor 108 is out of order, and the like. .. In this case, the measurement processing device 109 determines that the magnetic force of the magnetic body 107 is weakened, the magnetic body 107 is peeled off from the floor of the landing, the magnetic sensor 106 is out of order, and the like. When the acceleration sensor 108 is out of order, for example, the speed calculated from the acceleration sensor 108 is "0", that is, the magnetic flux obtained from the magnetic sensor 106 even though the car 101 is stopped. This is the case when the density keeps changing.

In step S307, the measurement processing device 109 performs the correction process and ends the abnormality detection process.

The correction process is performed when the position of the magnetic body 107 fluctuates or when the position of the magnetic sensor 106 fluctuates. Here, the content of the correction process and its conditions will be described with reference to FIG. The storage device 220 stores the magnetic flux density and the value of the implantation deviation before the positions of the magnetic sensor 106 and the magnetic body 107 change.

In the correction process, the measurement processing device 109 corrects the value in the magnetic flux density after the occurrence of the position change (after the change) so as to calculate it as the implantation deviation before the change.

For example, as shown in FIG. 8, the magnetic flux density t and the landing deviation were x when the car 101 was stopped on a certain floor before the fluctuation of the magnetic sensor 106. If the magnetic flux density is u and the implantation deviation is y when the magnetic material 107 is stopped on the floor after the change, the magnetic flux density is changed from t to u. Assuming that the position (implantation deviation) has not changed, it is assumed that the implantation deviation at the time of the magnetic flux density u is x. After that, the measurement processing device 109 corrects the landing deviation at the magnetic flux density u by setting a reference as x on the floor.

In step S308, the measurement processing device 109 outputs the landing deviation by the acceleration sensor 108 to the control device 104.

In step S309, the measurement processing device 109 controls notifications (failure notifications) such as the magnetic force of the magnetic body 107 is weakened, the magnetic body 107 is peeled off from the floor of the landing, and the magnetic sensor 106 is out of order. Output to device 104.

In the present embodiment, when an abnormality occurs in the magnetic material or the magnetic sensor, the abnormality is detected and the correction process is performed without detecting the wrong position, or the abnormality is dealt with. Therefore, according to the present embodiment, when the position of the magnetic material provided at the landing on each floor fluctuates due to some external factor, the position change is corrected without erroneously detecting the position of the car. The position of the car can be detected. Further, according to the present embodiment, when the correction process cannot be applied, it is possible to prevent erroneous detection of the position of the car by outputting a value as an abnormality.

(2) Addendum The above-described embodiment includes, for example, the following contents.

In the above-described embodiment, the case where the present invention is applied to an abnormality detection system has been described, but the present invention is not limited to this, and is widely applied to various other systems, devices, methods, and programs. Can be done.

The configuration shown in the above-described embodiment is an example. There is no problem even if the magnetic material 107 is not the floor surface 112 of the landing. For example, the magnetic material 107 may be provided at the upper part of the landing door, or may be provided at another place. Further, regarding the mounting position of the magnetic sensor 106, there is no problem even if the magnetic body 107 is provided at a position where it can be detected and is not the floor surface 111 of the car 101. For example, if the magnetic body 107 is provided above the door of the landing, the magnetic sensor 106 is provided above the car 101.

Further, in the above-described embodiment, the landing deviation is calculated by using the acceleration sensor 108, and the landing deviation is compared with the landing deviation calculated from the magnetic sensor 106 to detect the positional deviation of the magnetic body 107 or the magnetic sensor 106. However, the same detection is possible not only with the acceleration sensor 108 but also with, for example, a pressure sensor.

Further, in the above-described embodiment, the configuration of the communication medium is not necessarily limited. The communication medium is, for example, a communication medium compliant with various communication standards such as USB (Universal Serial Bus) and RS-232C, LAN (Local Area Network), WAN (Wide Area Network), the Internet, a dedicated line, and the like. The communication device 230 is, for example, a NIC (Network Interface Card), a wireless communication module, a USB (Universal Serial Interface) module, a serial communication module, or the like.

Further, in the above-described embodiment, the communication device 230 can also function as an input device that receives information from another device that is communicably connected. In addition, the communication device 230 can also function as an output device that transmits information to other devices that are communicably connected. The input device is a user interface that receives information from the user. The input device is, for example, a keyboard, a mouse, a card reader, a touch panel, or the like. The output device is a user interface that outputs various information (display output, audio output, print output, etc.). The output device is, for example, a display device for visualizing various information, an audio output device (speaker), a printing device, and the like. The display device is an LCD (Liquid Crystal Display), a graphic card, or the like.

Further, in the above description, information such as programs, tables, and files that realize each function is recorded in a memory, a hard disk, a storage device such as an SSD (Solid State Drive), or an IC card, an SD card, a DVD, or the like. Can be placed on the medium.

The above-described embodiment has, for example, the following characteristic configurations.

The first discriminator (magnetic material 107, marker, RF tag, etc.) provided in the hoistway of the elevator and the discriminator provided in the car (for example, car 101) of the elevator are detected. An abnormality detection system (for example, an abnormality detection system 100) including a detection mechanism (for example, a position detection mechanism 201) including a sensor (magnetic sensor, an optical sensor, a radio wave sensor, etc.) of the above. Information on the position of the car of the elevator and the first specific part (for example, the first specific part 222) that can specify the position of the car based on the detection of the discriminator by the sensor. A second specific unit (for example, a second) capable of specifying the position of the car based on information (acceleration, pressure, etc.) related to the position acquired by the second sensor (acceleration sensor 108, pressure sensor, etc.) to be acquired. 2. A determination unit (for example, a determination unit) for determining an abnormality of the detection mechanism based on the specific unit 223), the position specified by the first specific unit, and the position specified by the second specific unit. A determination unit 225) is provided.

For example, the discriminator is detected by the first sensor when the car arrives at a predetermined floor (for example, one floor or a plurality of floors). It is provided so as to. Further, for example, in the determination unit, the position specified by the second specific unit when the car arrives at the predetermined floor is the position of the predetermined floor, and the position specified by the first specific unit is used. If the specific result is not a normal result, it is determined that the detection mechanism is abnormal (see, for example, step S304).

The normal result is that the correlation between the landing deviation specified based on the sensor value of the first sensor and the landing deviation specified based on the sensor value of the second sensor is not broken. The sensor value of the sensor of (1) has been acquired (the discriminator has not peeled off from the landing), the discriminating power of the sensor value of the 1st sensor is equal to or higher than the threshold value, any combination of these, etc. Can be mentioned.

Further, for example, the discriminator is at a position where a height difference is not formed between the floor surface of the car and the floor of the landing on the predetermined floor when the car arrives at the predetermined floor. It is provided so as to be detected by the first sensor.

In the above configuration, for example, when the position of the car is specified by the sensor value of the second sensor and the specific result by the sensor value of the first sensor is not normal, the abnormality of the detection mechanism is determined. be able to. For example, according to the above configuration, there is an abnormality in the detection mechanism, such as the position of the discriminator provided on the predetermined floor is fluctuating, the position of the first sensor provided in the car is fluctuating, and the like. When, by outputting as the position of the car specified by the first specific unit is incorrect, it is possible to avoid erroneous detection of the position of the car based on the sensor value of the first sensor. Become.

The discriminator is provided corresponding to each of a plurality of floors (may be some floors or all floors), and the determination unit is the first specific unit. It is determined whether or not the correlation between the position specified by the above and the position specified by the second specific part is broken, and the correlation is broken on one of the plurality of floors, and the correlation is broken on the plurality of floors. When it is determined that the correlation is not broken on all the floors except the above one floor, it is determined that there is an abnormality in the attachment of the discriminator provided on the above one floor (see step S304).

For example, the first specific unit refers to the floor surface of the car and the floor of the car based on the information of the discriminator provided on the floor detected by the first sensor. Identify the difference in height from the floor of the landing on the floor (see, for example, step S302). Further, for example, when the car arrives at each floor of the plurality of floors, the second specific unit of the car is based on the information related to the position acquired by the second sensor. The difference in height between the floor surface and the floor surface of the landing on the floor where the car has arrived is specified (see, for example, step S303). Further, for example, the determination unit determines whether or not the correlation between the difference specified by the first specific unit and the difference specified by the second specific unit is broken, and determines whether or not the correlation between the difference and the difference specified by the second specific unit is broken. If it is determined that the correlation is broken on one of the floors and the correlation is not broken on all the floors except the one on the plurality of floors, the discriminator provided on the one floor is attached. Is determined to be abnormal (see step S304).

With the above configuration, it is possible to determine an abnormality in the attachment of the discriminator. According to the above configuration, for example, in the identification of the position of the car on the first floor by the first specific unit, it becomes possible to take into account the variation in the position of the discriminator. Further, according to the above configuration, for example, it is output that there is an abnormality in the attachment of the identification body provided on one floor, so that the maintenance staff of the elevator can easily grasp the abnormality in the attachment of the identification body. Since it can be done, the time required for maintenance can be reduced.

The discriminator is provided corresponding to each of a plurality of floors (may be some floors or all floors), and the determination unit is the first specific unit. When it is determined whether or not the correlation between the position specified by the above and the position specified by the second specific part is broken, and it is determined that the correlation is broken on all the floors of the plurality of floors, the above It is determined that there is an abnormality in the attachment of the first sensor (step S304).

For example, the determination unit determines whether or not the correlation between the difference specified by the first specific unit and the difference specified by the second specific unit is broken, and all of the plurality of floors. When it is determined that the correlation is broken on the floor, it is determined that there is an abnormality in the mounting of the first sensor (step S304).

With the above configuration, it is possible to determine an abnormality in the mounting of the first sensor. According to the above configuration, for example, in specifying the position of the car on all floors by the first specific unit, it becomes possible to take into account the fluctuation of the position of the first sensor. Further, according to the above configuration, for example, by outputting that there is an abnormality in the installation of the first sensor, the elevator maintenance staff can easily grasp the abnormality in the installation of the first sensor, so that maintenance is possible. It is possible to reduce the time required for.

With respect to the floor determined by the determination unit that the correlation is broken, based on the position on the floor specified by the first specific unit, and based on the information of the discriminator provided on the floor. A correction unit (for example, a correction unit 226) for correcting the position of the car specified by the first specific unit is provided.

According to the above configuration, for example, when the position of the discriminator provided in the hoistway fluctuates due to some external factor, the position change is corrected and the position is corrected without erroneously detecting the position of the car. Can be identified. In addition, it is possible to eliminate the situation of dispatching maintenance personnel due to slight changes in position.

For example, the correction unit is detected by the first sensor with respect to the floor determined by the determination unit that the correlation is broken, taking into account the difference in the floor specified by the first specific unit. Based on the information of the discriminator provided on the floor, the difference in height between the floor surface of the car and the floor surface of the landing on the floor is corrected.

In the above configuration, if there is a change in the mounting of the discriminator or the first sensor, the height difference between the floor surface of the car and the floor surface of the landing identified after the change is not the original difference, but after the change. The difference based on the information of the discriminator detected by the detected first sensor is determined to be equivalent to the difference identified before the fluctuation, and is corrected.

Further, the above-described configuration may be appropriately changed, rearranged, combined, or omitted as long as it does not exceed the gist of the present invention.

100 ... Abnormality detection system 222 ... First specific unit 222 ... Second specific unit 225 ... Judgment unit.

Claims (5)

An abnormality detection system including an identification body provided in an elevator hoistway and a detection mechanism provided in a car of the elevator and including a first sensor for detecting the identification body. ,
A first identification unit capable of identifying the position of the car based on the detection of the discriminator by the first sensor, and
A second identification unit capable of specifying the position of the car based on the information related to the position acquired by the second sensor that acquires the information related to the position of the car of the elevator, and
A determination unit that determines an abnormality in the detection mechanism based on the position specified by the first specific unit and the position specified by the second specific unit.
Anomaly detection system with. The discriminator is provided corresponding to each of the plurality of floors.
The determination unit determines whether or not the correlation between the position specified by the first specific unit and the position specified by the second specific unit is broken, and one of the plurality of floors. If it is determined that the correlation is broken on the floor and the correlation is not broken on all the floors except the one floor among the plurality of floors, there is an abnormality in the attachment of the discriminator provided on the one floor. To judge,
The abnormality detection system according to claim 1. The discriminator is provided corresponding to each of the plurality of floors.
The determination unit determines whether or not the correlation between the position specified by the first specific unit and the position specified by the second specific unit is broken, and on all floors of the plurality of floors. When it is determined that the correlation is broken, it is determined that there is an abnormality in the attachment of the first sensor.
The abnormality detection system according to claim 1. With respect to the floor determined by the determination unit that the correlation is broken, based on the position on the floor specified by the first specific unit, based on the information of the discriminator provided on the floor. A correction unit for correcting the position of the car specified by the first specific unit is provided.
The abnormality detection system according to claim 2 or 3. An abnormality detection method for detecting an abnormality in a detection mechanism including an identification body provided in the hoistway of an elevator and a first sensor for detecting the identification body provided in the car of the elevator. And
The first identification unit identifies the position of the car based on the detection of the discriminator by the first sensor.
The second specific unit identifies the position of the car based on the information related to the position acquired by the second sensor that acquires the information related to the position of the car.
The determination unit determines an abnormality of the detection mechanism based on the position specified by the first specific unit and the position specified by the second specific unit.
Anomaly detection method.

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