Elevator monitoring device and elevator monitoring method

Abstract

The invention provides an elevator monitoring device and an elevator monitoring method. In an elevator which is not provided with a device for detecting a trapped fault of a car, the following problems exist: the detection of the trapped car is delayed, or maintenance personnel are deactivated even though normal operation is carried out in a disaster. The elevator monitoring device monitors a first elevator provided with a trapped fault detection device of an elevator car and a second elevator which is not provided with the trapped fault detection device and is provided with an acceleration sensor for detecting the acceleration of the elevator car, and is provided with a control part. The control part is used for estimating the occurrence of the elevator car trapping fault in the second elevator according to the acceleration detected by the acceleration sensor of the second elevator when the information that the elevator car trapping fault occurs in the first elevator is received.

Description

Technical Field

[0001] This invention relates to an elevator monitoring device and method that envisions situations where the elevator car is trapped due to earthquakes or other events. Background Technology

[0002] In the event of a disaster, there are sometimes malfunctions where elevators within a certain range stop operating, trapping passengers inside the elevator car.

[0003] Patent Document 1 describes a device that, based on location information indicating the location of the elevator and disaster information including the degree of an earthquake or similar event in the location, estimates the possibility of users being trapped in the elevator in the event of a disaster of concern.

[0004] Patent Document 1: Japanese Patent No. 7248073

[0005] However, some elevators currently in use do not have entrapment detection devices. In such cases, if there is no communication between passengers via intercom or other means, the entrapment of the car cannot be detected, and rescue can sometimes take time.

[0006] In methods such as Patent Document 1 that dispatch maintenance personnel to elevators estimated to be trapped based on disaster information, the efficiency is poor in cases such as earthquakes, where maintenance personnel are dispatched even if no actual entrapment has occurred. Summary of the Invention

[0007] This invention was made to solve this problem, and its purpose is to enable the rapid dispatch of maintenance personnel when an elevator, which does not have a special entrapment fault detection device, is trapped.

[0008] The elevator monitoring device of the present invention monitors a first elevator equipped with a car entrapment fault detection device and a second elevator equipped with an acceleration sensor that detects the acceleration of the car but does not have an entrapment fault detection device. The elevator monitoring device has a control unit that, upon receiving information that a car entrapment fault has occurred in the first elevator, estimates the occurrence of a car entrapment fault in the second elevator based on the acceleration detected by the acceleration sensor of the second elevator.

[0009] Invention Effects

[0010] It can prevent unnecessary dispatches such as sending maintenance personnel to elevators that are moving normally after a disaster, and can enable rapid recovery of elevators that have experienced car entrapment malfunctions. Attached Figure Description

[0011] Figure 1 This is a block diagram illustrating the elevator monitoring system of Embodiment 1.

[0012] Figure 2 This is a conceptual diagram showing the appearance of the elevator monitoring system according to Embodiment 1.

[0013] Figure 3 This is a structural diagram showing the schematic structure of the elevator according to Embodiment 1.

[0014] Figure 4 This is a structural diagram showing the schematic structure of the elevator according to Embodiment 1.

[0015] Figure 5 This is a diagram showing the storage section of the elevator monitoring device according to Embodiment 1.

[0016] Figure 6 This is a diagram illustrating the data format of the notification master data of the elevator monitoring device according to Embodiment 1.

[0017] Figure 7 This is a diagram showing the data matrix of the car-to-car distance master data of the elevator monitoring device according to Embodiment 1.

[0018] Figure 8 This is a flowchart illustrating the detection and handling of a car entrapment fault in the elevator monitoring device according to Embodiment 1.

[0019] Figure 9 This is a flowchart of the entrapment fault detection in the first elevator of Implementation Method 1.

[0020] Figure 10 This is a flowchart of receiving trapped fault information in the maintenance terminal of Implementation Method 1.

[0021] Figure 11 This is a flowchart illustrating the process by which the nth elevator in Implementation 1 obtains acceleration.

[0022] Figure 12 This is a diagram showing the data format of the record table of the elevator monitoring device according to Embodiment 1.

[0023] Figure 13 This is a flowchart illustrating the update process of the car-to-car distance threshold in the elevator monitoring device of Embodiment 2.

[0024] Figure 14 This is a graph showing the entrapment fault occurrence-distance curve in the elevator monitoring device of Embodiment 2.

[0025] Figure 15 This is a diagram illustrating an example of the hardware resources of an elevator monitoring device.

[0026] Figure 16 This is another example of the hardware resources required for an elevator monitoring device.

[0027] Label Explanation

[0028] 1: Elevator monitoring system; 2-1: Shaft 1; 2-2: Shaft 2; 3-1: Machine Room 1; 3-2: Machine Room 2; 4-1: Traction Machine 1; 4-2: Traction Machine 2; 5-1: Deflector Sheave 1; 5-2: Deflector Sheave 2; 6-1: Control Device 1; 6-2: Control Device 2; 7-1: Rope 1; 7-2: Rope 2; 8-1: Counterweight 1; 8-2: Second counterweight; 10-1: Floor; 100-1: First elevator; 100-2: Second elevator; 100-N: Nth elevator; 101-1: First car; 101-2: Second car; 101-N: Nth car; 102-1: Trapped fault detection device; 103-2: Second accelerometer sensor; 110-1: First communication device; 110-2: Second... Communication device; 110-N: Nth communication device; 111-1: Transmitting unit; 112-2: Acceleration acquisition unit; 200: Center; 201: Elevator monitoring device; 211: Communication unit; 212: Control unit; 213: Storage unit; 213a: Notification master data; 213a1: Acceleration threshold; 213a2: Car distance threshold; 213b: Record table; 213b1: Date and time column; 213b2: Car name column; 213b3: Acceleration column; 213b4: Dispatch result column; 213c: Car distance master data; 214: Threshold setting unit; 220: Processor; 221: Memory; 222: Dedicated hardware; 300: Base station; 301: Maintenance terminal; 302: Communication unit; 303: Notification display device; 400: Communication line. Detailed Implementation

[0029] The following is a detailed description with reference to the accompanying drawings. Repeated descriptions have been simplified or omitted as appropriate. In the various figures, the same reference numerals denote the same or equivalent parts.

[0030] Implementation Method 1

[0031] Figure 1 This is a block diagram illustrating the elevator monitoring system of Embodiment 1. Figure 2 This is a conceptual diagram showing the appearance of an elevator monitoring system. Figure 3 , Figure 4 This is a structural diagram showing the general structure of an elevator.

[0032] The elevator monitoring system 1 mainly consists of N elevators, from the first elevator 100-1 to the Nth elevator 100-N, which are the objects of monitoring; an elevator monitoring device 201 configured in a center 200 that can communicate with these elevators; and a maintenance terminal 301 configured in a maintenance personnel waiting point 300.

[0033] Furthermore, these elevators 100-1 to N 100-N, elevator monitoring device 201, and maintenance terminal 301 are connected via communication line 400 in a manner that enables them to communicate with each other.

[0034] Figure 3 This is a structural diagram showing the first elevator 100-1. In the first elevator 100-1, a first machine room 3-1 is provided above the first shaft 2-1. The first machine room 3-1 is equipped with a first traction machine 4-1, a first guide wheel 5-1, and a first control device 6-1.

[0035] In addition, the first traction machine 4-1 has a traction machine motor and a drive rope pulley, and the first rope 7-1 is wound around the drive rope pulley and the first deflector pulley 5-1.

[0036] The first car 101-1 and the first counterweight 8-1 are installed in the first hoistway 2-1 in a manner that allows them to move vertically. The first car 101-1 is connected to the first end of the first rope 7-1. The first counterweight 8-1 is connected to the second end of the first rope 7-1. By rotating the drive sheave, the first car 101-1 and the first counterweight 8-1 move vertically within the first hoistway 2-1.

[0037] In addition, multiple floors in the building are equipped with landing stations 10-1. Each landing station 10-1 is opened and closed by a pair of landing doors.

[0038] A entrapment fault detection device 102-1 is installed in the first car 101-1. This entrapment fault detection device 102-1 detects entrapment faults in the car. For example, this entrapment fault detection device 102-1 has a floor stop sensor, a door opening and closing sensor, etc. When there are passengers in the car, it detects situations where the car has stopped at a floor but the car door is not open or closed, and performs fault detection.

[0039] Furthermore, a first communication device 110-1 is installed in the first machine room 3-1. This first communication device 110-1 transmits the status of the first control device 6-1, the operating information of the first elevator 100-1, etc., to the outside, or obtains information from the outside. In addition, a transmitter 111-1 is provided, which transmits the information to the outside when the entrapment fault detection device 102-1 detects an entrapment fault in the car.

[0040] In addition, Figure 3 In this case, the entrapment fault detection device 102-1 is installed in the first car 101-1, but it can also be configured externally, for example, at the landing. Furthermore, as long as the entrapment fault of the car can be detected, the door opening and closing sensor may not be used.

[0041] Figure 4This is a structural diagram showing the second elevator 100-2. Furthermore, the third to Nth elevators 100-N have the same structure as the second elevator 100-2. Similar to the first elevator 100-1, the second elevator 100-2 also has a second hoistway 2-2, a second machine room 3-2, a second traction machine 4-2, a second guide sheave 5-2, a second control device 6-2, a second rope 7-2, a second counterweight 8-2, a second car 101-2, and a second communication device 110-2.

[0042] In addition, the second car 101-2 has a second acceleration sensor 103-2. The second acceleration sensor 103-2 detects the acceleration of the second car 101-2 as it moves up and down in the second hoistway 2-2. Acceleration sensors are essential for the elevator's operation control; all normal elevators have them by standard. The first car 101-1 also naturally has an acceleration sensor.

[0043] Furthermore, the second communication device 110-2 has an acceleration acquisition unit 112-2. This is for acquiring acceleration information from the second acceleration sensor 103-2 and transmitting it externally.

[0044] In addition, Figure 4 In this case, the second acceleration sensor 103-2 is disposed in the second car 101-2, but it can also be disposed externally, for example, or embedded in the second control device 6-2.

[0045] exist Figure 1 The elevator monitoring device 201 includes a communication unit 211, a control unit 212, a storage unit 213, and a threshold setting unit 214.

[0046] The communication unit 211 acquires information sent from the communication devices of the elevators being monitored, such as the first communication device 110-1 to the Nth communication device 110-N. Furthermore, it transmits and receives information between these communication devices and the maintenance terminal 301 as needed.

[0047] The control unit 212 performs internal processing based on the information received by the communication unit 211, or generates transmission information for the first communication device 110-1 to the Nth communication device 110-N and the maintenance terminal 301. The storage unit 213 stores preset information. In addition, the threshold setting unit 214 sets the conditions for determining a car entrapment fault, such as the threshold for the distance between cars. Details will be described later.

[0048] The maintenance terminal 301 has at least a communication unit 302 that communicates with the communication unit 211 of the elevator monitoring device 201, and a notification display device 303 that receives and displays notifications sent from the communication unit 211 of the elevator monitoring device 201.

[0049] Next, the approach to monitoring the trapped elevator car in the elevator monitoring system 1 will be explained.

[0050] Elevator 101-1 is equipped with a entrapment fault detection device 102-1. In the event of an entrapment fault, this device detects the fault and the transmitting unit 111-1 sends the fault information to the elevator monitoring device 201. The communication unit 211 of the elevator monitoring device 201 then transmits this information to the maintenance terminal 301. This allows the maintenance personnel to be aware of the entrapment fault in the elevator car. The maintenance personnel can then immediately proceed to elevator 100-1 to rescue passengers and repair the elevator.

[0051] However, among elevators 2 (100-2) to N (100-N), cars 2 (101-2) to N (101-N) do not have a entrapment fault detection device and cannot directly detect the occurrence of entrapment faults.

[0052] However, if an elevator stops operating due to a natural disaster such as an earthquake or flood, resulting in a car entrapment, the same entrapment may occur in a nearby elevator.

[0053] Therefore, in the elevator monitoring device 201, when a car entrapment fault occurs in the first elevator 100-1, the device detects the movement status of other elevators under monitoring, specifically the acceleration of the car in the direction of travel within the shaft. If this acceleration is less than a threshold, it indicates that the car has not moved. Furthermore, if this elevator is adjacent to the first elevator 100-1, the probability of a car entrapment fault occurring in this elevator is high, similar to the first elevator 100-1, and it is estimated that a car entrapment fault has occurred. Therefore, the maintenance terminal 301 is notified that a car entrapment fault has occurred, prompting maintenance personnel to respond.

[0054] In addition, the elevators 100-1 to N100-N that are monitored in the elevator monitoring system 1 do not need to be located in the same building.

[0055] Next, the handling of the car being trapped will be explained in detail.

[0056] First, such as Figure 5 As shown, the storage unit 213 of the elevator monitoring device 201 stores the notification master data 213a, the record table 213b, and the car distance master data 213c. Figure 6 The data format of the notification master data 213a is shown.

[0057] like Figure 6 As shown, the master data 213a stores the acceleration threshold 213a1 and the car-to-car distance threshold 213a2, which serve as the criteria for determining entrapment. Furthermore, here, these are respectively 1 m / s².2 100m.

[0058] also, Figure 7 This shows the data matrix for the main data 213c of the distance between car compartments. (Example) Figure 7 As shown, the distances between the first car 101-1 and other monitored cars, namely the second car 101-2 to the Nth car 101-N, are stored in matrix form.

[0059] Figure 8 This is a flowchart illustrating the detection and handling of car entrapment faults in the elevator monitoring device 201.

[0060] First, the control unit 212 obtains the acceleration threshold 213a1 and the car distance threshold 213a2 from the master data 213a (step S101). Next, it obtains the distance between the first elevator 100-1 and each of the elevators that are being monitored from the car distance master data 213c (step S102).

[0061] Next, the first communication device 110-1 of the first elevator 100-1 sends a entrapment fault information. The elevator monitoring device 201 determines whether the entrapment fault information has been received (step S103). Step S103 continues until it is determined that the entrapment fault information has been received.

[0062] Figure 9 This is a flowchart of the entrapment fault detection process in elevator 100-1.

[0063] First, the entrapment fault detection device 102-1 continuously determines whether an entrapment fault has occurred (step S201). If an entrapment fault is detected in step S201 ("yes"), the entrapment fault detection device 102-1 notifies the transmission unit 111-1 of the occurrence of the entrapment fault. The transmission unit 111-1 generates entrapment fault occurrence information and sends it to the elevator monitoring device 201 (step S202).

[0064] If a entrapment fault occurs and is sent in step S202, the elevator monitoring device 201 receives the entrapment fault occurrence information in step S103. Then, after the control unit 212 confirms the content of the entrapment fault information, it sends the entrapment fault occurrence information to the maintenance terminal 301 (step S104).

[0065] Figure 10 This is a flowchart of the process for receiving information about a trapped fault in the maintenance terminal 301.

[0066] In the maintenance terminal 301, it is always determined whether the communication unit 302 has received a entrapment fault information (step S301). If the entrapment fault information has been received ("yes"), a message prompting the maintenance personnel to be dispatched is displayed on the notification display device 303 (step S302). In addition, the message includes a display of the elevator that is the target elevator for dispatch.

[0067] In the elevator monitoring device 201, a car entrapment malfunction occurs in the first elevator 100-1, and the entrapment malfunction information is received. Therefore, based on this, a confirmation operation is performed to determine whether entrapment malfunctions are unlikely to occur in other elevators that are under monitoring. Specifically, in the control unit 212, the elevators under monitoring are first identified. That is, in Figure 8 In the flowchart, n is set to 2 (step S105), and it is confirmed whether n is the last elevator that is monitored, i.e., the Nth elevator or below (step S106).

[0068] Here, in step S106, if n is less than N ("yes"), the last one has not been reached. Therefore, an acceleration transmission instruction is issued to the nth elevator, and acceleration is obtained from the nth elevator (step S107).

[0069] Figure 11 This is a flowchart illustrating the process by which the nth elevator gains acceleration.

[0070] First, the acceleration acquisition unit 112-n constantly determines whether an acceleration transmission instruction has been received (step S401). If an acceleration transmission instruction has been received from the elevator monitoring device 201 in step S401 ("yes"), the acceleration occurring within a certain period (e.g., several seconds) is acquired from the acceleration sensor 103-n (step S402). Then, it is sent to the elevator monitoring device 201 (step S403).

[0071] Furthermore, the acceleration is set to a certain period of time because even during normal operation, the acceleration changes when starting from a floor and arriving at a floor, but otherwise, the acceleration remains unchanged when moving at a constant speed. Since the acceleration during constant speed operation alone cannot distinguish it from when the vehicle is stationary, the acceleration over a certain period of time is obtained.

[0072] exist Figure 8In step S107, the acceleration of the nth elevator is obtained. Therefore, it is determined whether this acceleration is smaller than the acceleration threshold 213a1 obtained in step S101 (step S108). If the acceleration obtained in step S108 is smaller than the acceleration threshold 213a1 ("yes"), it is determined whether the distance between the nth car 101-n and the first car 101-1 is smaller than the car distance threshold 213a2 obtained in step S101 (step S109).

[0073] If, in step S109, it is determined that the distance between the nth car 101-n and the first car 101-1 is smaller than the car-to-car distance threshold 213a2 ("yes"), a car entrapment fault may occur in the nth car 101-n. Therefore, the control unit 212 generates entrapment fault estimation information and sends it to the maintenance terminal 301 (step S110).

[0074] Then, the control unit 212 records the date and time, car name, and acceleration in the record table 213b (step S111).

[0075] Similarly, if the acceleration obtained in step S108 is greater than or equal to the acceleration threshold 213a1 ("No"), then in step S111, the date, time, car name, and acceleration are recorded in record table 213b. Furthermore, if in step S109 the distance between the nth car 101-n and the first car 101-1 is greater than or equal to the car distance threshold 213a2 obtained in step S101 ("No"), then also in step S111, the date, time, car name, and acceleration are recorded in record table 213b.

[0076] Additionally, the maintenance terminal 301 that received the trapped fault estimation information sent in step S110 and Figure 10 The flowchart shown illustrates the same operation. That is, the communication unit 302 receives the trapped fault estimation information and displays a message prompting maintenance personnel to be dispatched on the notification display device 303.

[0077] Here, examples are given to illustrate steps S108 and S109.

[0078] For example, when n is 2, the object is the second car 101-2, therefore, the acceleration obtained by the second acceleration sensor 103-2 is acquired. For example, let it be 3 m / s². 2 At that time, it becomes 1m / s 2 Therefore, in step S111, the acceleration of the second car 101-2 is recorded in record table 213b. Additionally, if the acceleration is 3 m / s²... 2 If so, the elevator is considered to be moving normally.

[0079] Furthermore, for example, let's assume the acceleration obtained by the second acceleration sensor 103-2 is 0.1 m / s². 2 At that time, compared to 1m / s 2 Small. In addition, the distance between the first car 101-1 and the second car 101-2 is 50m, which is below the car distance threshold 213a2, i.e., below 100m.

[0080] In this case, in step S110, the estimated information of the trapped fault in the second car 101-2 is sent to the maintenance terminal 301 via the communication unit 211.

[0081] At an acceleration of 0.1 m / s² 2 At that time, the second elevator car 101-2 stops. Furthermore, since it is close to the first elevator car 101-1, the possibility of the same phenomenon occurring as the first elevator is high.

[0082] In addition, the maintenance terminal 301 that receives the estimated information of the trapped fault displays a message on the notification display device 303 prompting the maintenance personnel to send out the second elevator 100-2.

[0083] Furthermore, for example, when n is N, the object is the Nth car 101-N, therefore, the acceleration obtained by the acceleration sensor 103-N is acquired. For example, let it be 0.1 m / s². 2 At that time, compared to 1m / s 2 Small. However, the distance between the first car 101-1 and the Nth car 101-N is 1km, which is above the car distance threshold 213a2, i.e., 100m or more. Therefore, in step S111, the acceleration of the Nth car 101-N is written into the recording table 213b.

[0084] The acceleration of car N (101-N) is 0.1 m / s². 2 The system assumes that the elevator has stopped. However, given that the elevator is 1km away from the first car 101-1, it is impossible to imagine that the same phenomenon as the first elevator 100-1 would occur. Therefore, the system does not notify the maintenance terminal 301 of the trapped fault estimation information.

[0085] exist Figure 8 In step S111, after the elevator monitoring device 201 records the acceleration of the nth elevator in the recording table 213b, it increases the variable n (step S112) and moves to step S106.

[0086] Figure 12 This is a diagram showing the data format of record table 213b.

[0087] Record sheet 213b has columns for date and time 213b1, car name 213b2, acceleration 213b3, and dispatch result 213b4. Among these, the date and time column 213b1, car name column 213b2, and acceleration column 213b3 are... Figure 8 The column recorded in step S111.

[0088] For example, in Figure 12 In the first line, the date and time field 213b1 is "2024 / 1 / 29 12:00:00", the car name field 213b2 is "Car No. 2", and the acceleration field is "0m / s". 2 ".

[0089] This indicates that a entrapment malfunction occurred in car 1, unit 101-1, on January 29, 2024. Figure 8 In the flowchart, the acceleration of car 101-2 was obtained at 12:00:00 on 2024 / 1 / 29, and it was 0 m / s². 2 .

[0090] Furthermore, in the dispatch result column 213b4, no record is made in step S111; instead, the record is made by the maintenance personnel using the maintenance terminal 301. Specifically, if the notification display device 303 of the maintenance terminal 301 displays a message indicating a possible car entrapment fault in the second elevator 101-2, the maintenance personnel go to the second elevator 100-2 to confirm and perform restoration work and passenger rescue. At this time, if the maintenance personnel confirm the car entrapment fault, they record "Entrapped" in the dispatch result column 213b4 using the maintenance terminal 301. Alternatively, if the maintenance personnel go to the second elevator 100-2 to confirm but no car entrapment fault has occurred, they record "-" in the dispatch result column 213b4.

[0091] Thus, in Implementation Method 1, if a entrapment fault occurs in a car equipped with a entrapment fault detection device, it is possible to estimate whether a entrapment fault has occurred in other cars based on acceleration, and prompt the maintenance personnel to take appropriate action. This prevents maintenance personnel from moving into elevators where no entrapment fault has occurred, enabling rapid passenger rescue and recovery in the event of a disaster.

[0092] In addition, acceleration and acceleration thresholds are compared to estimate whether a entrapment fault has occurred. However, if acceleration is used, it can be estimated based on a calculation formula or by using artificial intelligence algorithms.

[0093] Furthermore, in Embodiment 1, the first elevator is exemplified by an elevator equipped with a entrapment fault detection device, and the second elevator is exemplified by elevators numbered 2 through 3 without such a device. However, there can be multiple elevators equipped with entrapment fault detection devices, i.e., the first elevator. In this case, the coverage area is wider, thus enabling more accurate estimation of car entrapment faults. Furthermore, there can be only one elevator without a entrapment fault detection device, i.e., the second elevator.

[0094] Furthermore, the threshold set for the master data 213a can be multiple, not just one. Depending on the elevator model, the acceleration may vary; therefore, the acceleration threshold can be adjusted for each model accordingly.

[0095] Furthermore, in obtaining acceleration, the elevator attempts to stop at the nearest floor immediately after the earthquake. Therefore, acceleration can be requested after a certain period of time, or multiple requests can be made to obtain acceleration.

[0096] Implementation Method 2

[0097] In implementation method 2, it is possible to adjust the settings based on past instances of car entrapment malfunctions. Figure 6 The car-to-car distance threshold of the master data 213a shown is updated.

[0098] Furthermore, in Embodiment 2, the detection / handling and system structure for the car entrapment fault are the same as in Embodiment 1.

[0099] First, in situations such as earthquakes, when a car entrapment malfunction occurs in several monitored cars, a system based on... Figure 8 The processing results are ultimately recorded and maintained in record table 213b.

[0100] In the elevator monitoring device 201, the threshold setting unit 214 updates the car distance threshold 213a2 of the notification master data 213a based on the dispatch results recorded in the record table 213b.

[0101] Figure 13 This is a flowchart illustrating the update process of the inter-car distance threshold 213a2.

[0102] First, the threshold setting unit 214 reads the record table 213b (step S501). Next, the threshold setting unit 214 reads the main data 213c of the distance between cars (step S502).

[0103] Next, the threshold setting unit 214 determines whether the car being monitored has experienced a entrapment malfunction and the distance relationship between the car and the first car 101-1, and calculates the threshold (step S503).

[0104] Specifically, generating Figure 14 The diagram shows the trapped fault occurrence-distance curve.

[0105] In addition, here, the car-to-car distance threshold 213a2 is set to 1.1 km, and all cars that are monitored, namely the second car 101-2 to the Nth car 101-N, are below the car-to-car distance threshold 213a2.

[0106] exist Figure 14 In the curve graph, firstly, according to record table 213b, for each car that becomes the monitoring object, a entrapment fault is set to "1" and no entrapment fault is set to "0". Moreover, the distance from the first car 101-1 to the car that becomes the object, recorded in the inter-car distance master data 213c, is set as the X-axis, and a entrapment fault in the car is set to "1" and no entrapment fault is set to "0" as the Y-axis, generating a two-dimensional curve graph and generating a regression curve based on a straight line.

[0107] exist Figure 14 In the above, the value of the X intercept is 0.88. Therefore, it can be determined that the relationship between the car that is separated from the first car 101-1 by more than 0.88 km and the entrapment fault that occurred in the first car 101-1 is small, and it can be excluded from the scope of dispatching maintenance personnel.

[0108] Therefore, the threshold setting unit 214 updates the value of the car distance threshold 213a2 of the master data 213a from 1 km to 0.88 km (step S504).

[0109] In this way, by selecting the cars to be dispatched by maintenance personnel based on past conditions, a more efficient response can be achieved. Also, here the regression curve is set to a straight line, but higher-order regression curves can also be used.

[0110] Figure 15 This diagram illustrates an example of the hardware resources of the elevator monitoring device 201. In addition to a communication unit 211 such as a communication adapter, the elevator monitoring device 201 also includes a processor 220 and a memory 221. Furthermore, there may be multiple processors 220 and memory 221.

[0111] In embodiments 1 and 2, the storage unit 213 of the elevator monitoring device 201 is implemented by the memory 221. Furthermore, a program is stored in the memory 221, which is appropriately read out and executed by the processor 220 to perform the functions of the control unit 212 and the threshold setting unit 214.

[0112] Additionally, the processor 220 is also referred to as a CPU (Central Processing Unit), central processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. The memory 221 can also be a semiconductor memory, magnetic disk, floppy disk, optical disk, high-density disk, mini-disk, or DVD. Suitable semiconductor memories include RAM, ROM, flash memory, EPROM, and EEPROM.

[0113] Figure 16 This diagram illustrates another example of the hardware resources of the elevator monitoring device 201. Figure 16 In the example, the elevator monitoring device 201 has a processing circuit that includes a processor 220, a memory 221, and dedicated hardware 222. Figure 16 An example is shown of a portion of the functions of the elevator monitoring device 201 implemented by dedicated hardware 222. Alternatively, all the functions of the elevator monitoring device 201 can be implemented by dedicated hardware 222. The dedicated hardware 222 can be a single circuit, a composite circuit, a programmable processor, a parallel programmable processor, an ASIC, an FPGA, or a combination thereof.

[0114] Industrial availability

[0115] Thus, the elevator monitoring device of the present invention is useful in detecting car entrapment faults when both elevators with and without entrapment fault detection devices are included as monitoring targets.

Claims

1. An elevator monitoring device for monitoring a first elevator equipped with a car entrapment fault detection device and a second elevator that does not have the entrapment fault detection device but has an acceleration sensor for detecting the acceleration of the car, characterized in that, The elevator monitoring device has a control unit that, upon receiving information that a car entrapment fault has occurred in the first elevator, estimates the occurrence of the entrapment fault in the second elevator based on the acceleration detected by the acceleration sensor of the second elevator.

2. The elevator monitoring device according to claim 1, characterized in that, The elevator monitoring device has a storage unit that stores an acceleration threshold. If the acceleration is less than the acceleration threshold, the control unit estimates that a entrapment fault has occurred in the second elevator.

3. An elevator monitoring device for monitoring a first elevator equipped with a car entrapment fault detection device and a second elevator that does not have the entrapment fault detection device but has an acceleration sensor for detecting the acceleration of the car, characterized in that, The elevator monitoring device has a control unit that, upon receiving information that a car entrapment fault has occurred in the first elevator, estimates the occurrence of the entrapment fault in the second elevator based on the acceleration detected by the acceleration sensor of the second elevator and the distance between the car of the second elevator and the car of the first elevator.

4. The elevator monitoring device according to claim 3, characterized in that, The elevator monitoring device has a storage unit that stores an acceleration threshold and a distance threshold for the distance between elevator cars. When the acceleration detected by the second elevator is smaller than the acceleration threshold and the distance between the car of the second elevator and the car of the first elevator is smaller than the distance threshold, the control unit estimates that a entrapment fault has occurred in the second elevator.

5. The elevator monitoring device according to claim 4, characterized in that, The storage unit has a recording table that records the acceleration of the second elevator after receiving information that a car entrapment fault has occurred in the first elevator.

6. The elevator monitoring device according to claim 5, characterized in that, When the control unit estimates that a entrapment fault has occurred in the second elevator, it sends the entrapment fault estimation information to the maintenance terminal.

7. The elevator monitoring device according to claim 6, characterized in that, The maintenance terminal receives information about the estimated trapped fault and displays a prompt to the maintenance personnel to respond.

8. The elevator monitoring device according to claim 7, characterized in that, The record sheet allows maintenance personnel to record whether any car entrapment malfunctions have occurred in the second elevator.

9. The elevator monitoring device according to claim 8, characterized in that, The elevator monitoring device has a threshold setting unit that updates the distance threshold based on records in the record table indicating whether the entrapment fault has occurred.

10. An elevator monitoring method for monitoring a first elevator equipped with a car entrapment fault detection device and a second elevator that does not have the entrapment fault detection device but has an acceleration sensor for detecting the acceleration of the car, characterized in that, The elevator monitoring method comprises the following steps: Step 1: Receive information from the first elevator that a car entrapment malfunction has occurred; The second step involves sending an instruction to the second elevator to accelerate the car, and receiving acceleration information sent from the second elevator according to the instruction. as well as Step 3: Estimate the occurrence of a car entrapment fault in the second elevator based on the acceleration information.

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