JP2012192995A - Abnormality diagnosis system for passenger conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an abnormality diagnosis system for passenger conveyer which enables a maintenance member going to the spot where a passenger conveyer is installed to obtain data expressing that the passenger conveyer gets to a normal state.SOLUTION: A movable data collector 10c is disposed on a checking foot step and thereby, events occurring on the passenger conveyer are detected. A spot side controller 20 stores collected events of the data collector 10c as transmittable collection data and the stored collection data is transmitted via a communication line 40. A remote monitor 30 has an abnormality determination part 35 which receives the collection data transmitted from the spot side controller 20, compares the received collection data with the collection data on the normality and, thereby, determines the presence or absence of the abnormality. A communication line switching part 60 is disposed on the spot side and the collection data transmitted from the spot side controller 20 is input to a portable monitor 70. The portable monitor 70 has an abnormality determination part which compares the collection data on the normality with the collection data input from the communication line switching part 60 and thereby, determines the presence or the absence of the abnormality.

Description

  Embodiments of the present invention relate to an abnormality diagnosis system for a passenger conveyor that is applied to a passenger conveyor such as an escalator or a moving sidewalk to diagnose the presence or absence of the abnormality.

  Passenger conveyors, such as escalators and moving walkways, use a motor-driven drive to circulate and move a step band, which is a chain of endlessly connected steps by a chain, along the guide rails arranged inside the truss. It is the structure which conveys the passenger who boarded to the other entrance / exit from one entrance / exit. In a passenger conveyor with such a structure, abnormalities such as rubbing or riding on moving parts, for example, due to wear of articles due to long-term operation, deterioration over time of the installation adjustment state, mixing of foreign objects or mischief by passengers, etc. May occur. Such abnormalities often appear as sound or vibration.

  For example, when a maintenance staff responds to a customer's contact from a passenger conveyor that an abnormal noise has occurred, the maintenance staff visits the site and confirms the abnormal noise while actually operating the passenger conveyor. Then, the part where the abnormal noise is generated is specified, and the parts that cause the abnormal noise are exchanged or adjusted. In this case, it takes a long time to stop the service of the passenger conveyor, which often causes great trouble to the user.

  Also, when maintenance personnel identify abnormal noise generation factors at the site, there are many differences in accuracy and speed depending on the level of skill of the maintenance personnel who have visited the site. In some cases, service was stopped for hours. For this reason, it is desired to detect an abnormality at an early stage when a certain abnormality appears before the failure, and to eliminate the abnormality by maintenance work so that the failure can be avoided.

  In response to such a demand, a microphone is arranged on at least one step, and the passenger conveyor operating sound collected by the microphone is stored as a sound signal in the control device, and the sound signal stored in the storage device is transmitted to the communication line. There has been proposed a passenger conveyor abnormality diagnosis system that is transmitted to a monitoring room at a remote location so that a passenger conveyor operating sound can be confirmed and analyzed in the remote location (see, for example, Patent Document 1).

JP 2008-2014498 A

  The above-described passenger conveyor monitoring system is a system that compares an aging change of passenger conveyor operation sound at a remote location, identifies an abnormal portion of the passenger conveyor, and instructs maintenance personnel to perform maintenance inspection and repair. In general, when a maintenance inspection involving repair is performed, an operation check is performed to confirm that the normal state has been restored. This confirmation is required to be able to confirm as data that each part of the passenger conveyor, including the abnormal part, is in a normal state.

  However, since the function to determine on the data that the passenger conveyor is normal is a remote monitoring room, maintenance personnel who visit the site cannot immediately obtain data that can confirm that the passenger conveyor is normal There is a problem.

  In addition, if the cause of an abnormality that occurred on a passenger conveyor, etc. cannot be identified at a remote location, a detailed survey is often carried out by bringing measurement equipment to the site. It took a lot of time to prepare for temporary installation and removal, and in some cases, sufficient research and analysis could not be performed within a limited time.

  The problem to be solved by the invention is to provide an abnormality diagnosis system for a passenger conveyor that allows maintenance personnel who have visited the site where the passenger conveyor is installed to immediately obtain data indicating that the passenger conveyor is in a normal state. It is in.

  According to an embodiment of the present invention, there is an abnormality diagnosis system for a passenger conveyor that circulates and moves a step band in which a plurality of steps are connected endlessly, and is provided in at least one inspection step constituting the step band, A mobile data collection means for detecting an event occurring on the passenger conveyor by moving with the inspection step, and detecting a timing at which the inspection step passes a reference position set in a circulation movement path of the step band A reference position passing sensor that transmits the collected event of the data collecting means, and every one round from the reference position passing through the next reference position passing timing of the inspection step detected by the reference position passing sensor as collected data that can be transmitted The site-side control device that stores the collected data for each lap stored in the storage site to a predetermined transmission partner via a communication line, and the communication line The collected data transmitted from the on-site control device is received, and the received collected data for each lap is compared with the collected data at normal times of the passenger conveyor that has been obtained in advance. A remote monitoring device having an abnormality determination unit for determining the presence or absence; and the remote monitoring device which is provided on the site side control device side of the communication line and collects the collected data transmitted from the site side control device. The communication line switching unit to be input to other than the above, and the collected data at the normal time of the passenger conveyor obtained in advance is compared, and the collected data at the normal time is compared with the collected data input from the communication line switching unit And a portable monitoring device having an abnormality determination unit for determining the presence or absence of abnormality.

  Further, the remote monitoring device transmits the determination result of the abnormality determination unit to a predetermined transmission partner via the communication line, and the portable monitoring device can be connected to the site side control device side of the communication line, You may comprise so that the said determination result transmitted from the said remote monitoring apparatus may be received at the time of the connection.

It is a schematic block diagram of the abnormality diagnosis system of the passenger conveyor which concerns on one embodiment of this invention. It is a functional block diagram which shows the principal part structure in one embodiment of this invention. It is a functional block diagram which shows the portable monitoring apparatus in one embodiment of this invention. It is a functional block diagram which shows the data collection means in other embodiment of this invention.

  Hereinafter, a passenger conveyor abnormality diagnosis system according to an embodiment of the present invention will be described in detail with reference to the drawings.

  First, the embodiment shown in FIGS. 1, 2, and 3 will be described. In this Embodiment, as shown in FIG. 1, the escalator installed as an inclination between the upper floor and lower floor of a building is shown as an example of a passenger conveyor, for example. This passenger conveyor circulates a step band in which a large number of steps 4 are connected without gaps between the entrance and exit of the upper machine room 2 and the entrance and exit of the lower machine room 3, so that passengers boarded on the step 4 Are to be transported. A number of steps 4 are connected by an endless chain (not shown), and are arranged in a truss 1 installed under the floor of the building. Inside the truss 1, sprockets (not shown) are arranged in the upper machine room 2 and the lower machine room 3, respectively, and a chain (not shown) is interposed between the sprockets in the upper machine room 2 and the sprockets in the lower machine room 3. Is wrapped around.

  One of the sprocket of the upper machine room 2 and the sprocket of the lower machine room 3 is connected to a drive device (not shown) having a motor, a speed reducer, and the like. Then, the sprocket is rotated by the driving device, and the driving force is transmitted to the chain meshing with the sprocket, so that a large number of steps 4 connected by the chain are guided to and from the upper machine room 2 while being guided by guide rails (not shown). It is structured to circulate and move between the mouth and the entrance / exit of the lower machine room 3.

  On the upper part of the truss 1, a pair of skirt guards (not shown) are installed along the direction of movement of the step 4 so as to face both the left and right side surfaces of the step 4, and a balustrade 7 is erected on the skirt guard. ing. A belt-like handrail 6 is mounted around the balustrade 7. The handrail 6 is a handrail that is held by a passenger on the step 4. For example, the driving force of the driving device described above is transmitted to the handrail 6 around the balustrade 7 in synchronization with the movement of the step 4. Go around.

  At least one of a large number of steps 4 constituting a step band of the passenger conveyor to be monitored is set as an inspection step 5. The inspection step 5 is provided with a mobile data collection means 10c that moves together with the inspection step 5 and detects an event occurring on the passenger conveyor. As the mobile data collection means 10c, a sound collection device (microphone) that collects the operating sound of the passenger conveyor is used. In addition to the mobile data collection means 10c, fixed data collection means 10a and 10b are provided. The fixed data collecting means 10a and 10b are installed in predetermined fixed portions of the passenger conveyor, for example, the upper machine room 2 and the lower machine room 3, and when the step band that circulates passes through the installation place. A sound collecting device (microphone) that collects the operating sound of the passenger conveyor is used to detect an event that occurs.

  In addition, a site-side control device (hereinafter simply referred to as a control device) 20 installed at an arbitrary location outside the step 4 at the installation site of the passenger conveyor to be monitored, and a position detection device that functions as a reference position passage sensor to be described later 50, a remote monitoring device 30 installed in a monitoring center located in a remote location remote from the installation site of the passenger conveyor to be monitored, and connected to the communication line 40, and communication provided on the site side of the communication line 40 A line switching device 60 and a portable monitoring device 70 are provided.

  The mobile sound collecting device 10c installed on the inspection step 5 collects the operation sound of the passenger conveyor while circulating along with the inspection step 5 when the passenger conveyor to be monitored is operating. In addition, the sound collecting device 10a installed in the upper machine room 2 and the sound collecting device 10b installed in the lower machine room 3 which are fixed sound collecting devices are synchronized with the movable sound collecting device 10c. The operation sound of the passenger conveyor near the chamber 2 and the lower machine room 3 is collected.

  As shown in FIG. 2, the mobile sound collecting device 10c and the fixed sound collecting devices 10a and 10b convert the sound into an audio signal and output it, and the sound collecting unit 11 outputs the sound. It has a wireless transmission / reception unit 12 that converts an audio signal into a wireless signal and transmits it, and a power supply unit 13 that supplies power to the sound collection unit 11 and the wireless transmission / reception unit 12. In the sound collecting device 10c having the above configuration (the same applies to 10a and 10b), when power is supplied from the power supply unit 13 to the sound collecting unit 11 and the wireless transmission / reception unit 12 during operation of the passenger conveyor, the passenger conveyor is operated. The sound generated along with the sound signal is converted into a sound signal by the sound collecting unit 11, and the sound signal is converted into a radio signal by the wireless transmission / reception unit 12 and transmitted.

  Here, since the mobile sound collecting device 10c circulates together with the inspection step 5, the passenger conveyor operating sound collected at each point on the moving route of the step 4 is transmitted as a radio signal. A radio signal transmitted from the mobile sound collecting device 10 c is received by the control device 20. Similarly, the sound collecting device 10a installed in the upper machine room 2, which is a fixed sound collecting device, collects operating sounds of a hoisting machine and a sprocket (not shown) in the vicinity of the upper machine room 2 and a number of steps. The operation sound when 4 passes the upper machine room 2 is collected. The sound collecting device 10b installed in the lower machine room 3, which is also a fixed sound collecting device, collects operating sounds of sprockets (not shown) in the vicinity of the lower machine room 3, and a number of steps 4 are installed in the lower machine room. Collect the operating noise when passing through the chamber 3.

  Although FIG. 1 shows a state in which the mobile sound collecting device 10c is installed only on one inspection step 5, the sound collecting device 10c may be installed on two or more inspection steps 5. .

  Here, as described above, the reference position is set on the passenger conveyor, and the position detection device 50 is provided at the reference position. This reference position is a reference position for specifying the location of occurrence of abnormal sound detected by the mobile sound collector 10c, and the sound collection timing of the fixed sound collectors 10a and 10b is the mobile sound collector 10c. It is used as a reference position for synchronizing with the sound collection timing. The reference position is set at a predetermined position on the stepped belt in a circular movement path, and the position detection device 50 provided at the reference position detects the timing at which the inspection step 5 passes this reference position. Therefore, this position detection device 50 is hereinafter referred to as a reference position passage sensor.

  In this way, the reference position passing sensor 50 is configured so that the inspection step 5 on which the movable sound collecting device 10c is installed has a predetermined reference position in the movement route (for example, the horizontal portion of the lower floor as shown in FIG. 1). The position detection signal is output to the control device 20 at the timing of passing the above. Specifically, for example, the reference position passing sensor 50 is configured such that a proximity sensor, a photoelectric sensor, or the like is installed at the reference position, and a metal plate or the like for identifying the inspection step 5 is attached to the inspection step 5. Keep it. A proximity sensor or a photoelectric sensor installed at the reference position detects the passage of the inspection step 5 to which the metal plate is attached, and outputs a position detection signal at the passage timing.

  In addition, although the case where a proximity sensor or a photoelectric sensor is used as the reference position passing sensor 50 is illustrated, an inclination sensor may be provided in the inspection step 5 instead. In this case, the reference position is a point where the lower floor is shifted from the horizontal part to the inclined part. That is, when the inspection step 5 shifts from the horizontal portion of the lower floor to the inclined portion, the rolling mechanism (not shown) of the inspection step 5 shifts from the horizontal state to the inclined state. Is the timing of passing.

  The on-site control device 20 converts the operation sound of the passenger conveyor, which is a collection event of each of the sound collecting devices 10c and 10a, 10b, which is data collection means, into transmittable voice data, and collects the passenger conveyor 1 as the collected data. Store every lap. That is, based on the detection signal of the reference position passage sensor 50, the inspection step 5 stores every lap from the passage of the reference position to the timing of passing the next reference position. The collected data is transmitted to a predetermined transmission partner via a communication line. That is, the control device 20 receives the passenger conveyor operating sound collected by the mobile sound collecting device 10c and the fixed sound collecting devices 10a and 10b and transmitted as a radio signal, and converts the sound into sound data. The voice data of the passenger conveyor operating sound is transmitted to the remote monitoring device 30 of the monitoring center, which is a transmission partner, via a communication line 40 such as a telephone line.

  As shown in FIG. 2, for example, the control device 20 includes a wireless transmission / reception unit 21, a signal conversion unit 22, a memory 23, and a data transmission / reception transmission unit 24. The radio transmission / reception unit 21 receives a radio signal transmitted from the radio transmission / reception unit 12 of the movable sound collection device 10c (the same applies to the fixed sound collection devices 10a and 10b). The signal converter 22 converts the radio signal received by the radio transmitter / receiver 21 into audio data. The memory 23 temporarily stores the sound data of the passenger conveyor operating sound converted by the signal conversion unit 22 every predetermined period (for example, one turn). The data transmission / reception unit 24 transmits voice data of passenger conveyor operating sound temporarily stored in the memory 23 via the communication line 40.

  In the control device 20 having such a configuration, when the passenger conveyor operating sound collected by the sound collecting devices 10a, 10b, and 10c is transmitted as radio signals from the sound collecting devices 10a, 10b, and 10c when the passenger conveyor is operated. The wireless signal is received by the wireless reception unit 21, converted into audio data by the signal conversion unit 22, and stored in the memory 23. Then, the sound data of the passenger conveyor operating sound stored in the memory 23 is read in a predetermined data unit, and sent from the data transmitting / receiving unit 24 to the remote monitoring electrode 30 installed in the remote monitoring center via the communication line 40. Is sent.

  Here, since the mobile sound collecting device 10c circulates together with the inspection step 5 and collects passenger conveyor operation sound at each point on the movement route of the inspection step 5, the inspection step 5 takes one round. By sequentially storing the collected passenger conveyor operating sound as voice data in the memory 23, it is possible to store the operating sound over almost the entire process of the passenger conveyor as voice data in the memory 23, which is stored in the remote monitoring electrode 30. Can be sent to.

  As described above, the position detection signal is supplied from the reference position passage sensor 50 to the control device 20 every time the inspection step 5 passes a predetermined reference position. Therefore, the control device 20 can store, in the memory 23, the sound data of the passenger conveyor operating sound for one lap from when the inspection step 5 passes the reference position until it returns to the reference position as one data unit. In addition, voice data of passenger conveyor operating sound can be read from the memory 23 and sent to the remote monitoring device 30 for each data unit of one round.

  Similarly, the sound collecting device 10a installed in the upper machine room 2 and the sound collecting device 10b arranged in the lower machine room also collect sound in synchronization with the movable sound collecting device 10c. The sound data of passenger conveyor operating sound for one lap from passing through the reference position to returning to the reference position can be stored in the memory 23 as one data unit, and passengers can be stored for each data unit of one lap. The sound data of the conveyor operating sound can be read from the memory 23 and sent to the remote monitoring device 30.

  The remote monitoring device 30 is connected to the communication line 40 and receives the collected data transmitted from the control device 20 on the site side. It has an abnormality determination unit that determines the presence or absence of abnormality in comparison with the collected data at the time. That is, the remote monitoring device 30 receives the voice data of the passenger conveyor operating sound transmitted from the control device 20 at the passenger conveyor installation site via the communication line 40, and based on the voice data, the remote monitoring device 30 A process for detecting an abnormality is performed.

  As shown in FIG. 2, for example, the remote monitoring device 30 includes a data transmission / reception unit 31, a data processing unit 32, and an abnormality notification unit 33. The data transmission / reception unit 31 is connected to the communication line 40 and receives voice data of passenger conveyor operating sound transmitted from the data transmission / reception unit 24 of the control device 20 via the communication line 40. The data processing unit 32 analyzes the voice data of the passenger conveyor operating sound received by the data transmitting / receiving unit 31 and detects an abnormality occurring in the monitored passenger conveyor. The abnormality notifying unit 33 notifies the monitoring staff of the monitoring center of the result of the data analysis in the data processing unit 32 by an image or a voice. Further, inside the data processing unit 32, a memory 34 for storing various data and an abnormality determination unit 35 for determining abnormality are provided.

  The internal memory 34 provided in the data processing unit 32 of the remote monitoring device 30 has a data area described below. The first data area is a data area such as “site address or customer contact information” in which each monitored passenger conveyor is installed. The second data area is a data area in which “specific data specific to the passenger conveyor” such as a floor height, a stroke length, an inclination angle, an operation speed, and an operation direction is stored for each passenger conveyor to be monitored. . The third data area is a data area in which “normal sound data” collected in advance using the sound collectors 10a, 10b, and 10c when the monitored passenger conveyor is normal is stored. These data are collected, for example, when a passenger conveyor to be monitored is registered, and written in the corresponding areas.

  The data processing unit 32 of the remote monitoring device 30 receives the sound of the passenger conveyor operating sound when the data receiving unit 31 receives the sound data of the passenger conveyor operating sound transmitted from the control device 20 via the communication line 40. For each data unit of data collected by the sound collectors 10a, 10b, and 10c while the inspection step 5 makes one round, the fourth data area of the internal memory 34, that is, “monitoring voice” Data is temporarily stored in the data area.

  The abnormality determination unit 35 inside the data processing unit 32 collects sound by the sound collecting devices 10a, 10b, and 10c, and is voice data of passenger conveyor operating sound sent from the control device 20 to the remote monitoring device 30 via the communication line 40. Is compared with normal-time audio data collected in advance using the sound collecting poles 10a, 10b, and 10c when the monitored passenger conveyor is normal, it is determined whether or not an abnormality has occurred in the monitored passenger conveyor. To do.

  That is, the abnormality determination unit 35 uses “normal sound data” stored in advance in the third data area of the memory 34 and “monitoring sound data” written in the fourth data area of the memory 34 as needed. Each is read out, and these audio data are input to a comparator for comparison. Here, the “monitoring voice data” and the “normal voice data” read from the memory 34 start from the timing when the inspection step 5 where the sound collecting device 10c is installed passes the reference position, and the step 5 Is time-series data of passenger conveyor operating sound collected by the sound collectors 10a, 10b, and 10c during one round. The abnormality determination unit 35 causes the “monitoring voice data” and “normal voice data” to be input to the comparator with their respective start positions matched, for example, “monitoring voice data” and “normal voice data”. When a portion where a difference in sound pressure level exceeding a predetermined abnormality determination threshold is detected is detected, it is determined that an abnormality has occurred in the passenger conveyor to be monitored.

  Further, when it is determined that an abnormality has occurred in the monitored passenger conveyor, the abnormality determination unit 35 reads “specific data unique to the passenger conveyor” stored in advance in the second data area of the memory 34. Then, based on the comparison result between the “monitoring voice data” and “normal voice data” and the “specific data unique to the passenger conveyor” read from the memory 34, the location where the abnormality has occurred is identified.

  Specifically, when the reference position corresponding to the start position of the voice data is the horizontal part of the lower floor, the driving direction of the passenger conveyor is ascending, the driving speed is 30 m / min, and the stroke length is 8 m If the time T from the data start position of the portion determined to be abnormal in the voice data is 20 seconds, the position where the inspection step 5 is advanced 10 m from the horizontal portion of the lower floor, that is, the upper floor immediately after returning from the upper floor It can be identified that an abnormality has occurred near the machine room. The travel length of the passenger conveyor can be calculated geometrically from the floor height and the inclination angle of the passenger conveyor, so if the travel length of the passenger conveyor is not stored as specification data, The location of the abnormality can be identified using the tilt angle data.

  As described above, when the abnormality determination unit 35 determines that an abnormality has occurred in the passenger conveyor to be monitored and the abnormality occurrence location is specified, the abnormality notification unit 33 of the remote monitoring device 30 generates an abnormality. Information on the fact that it is in progress and information on the location where an abnormality has occurred are notified to the monitoring center's monitoring staff by means of images or voices, and a maintenance inspection plan is made, such as dispatching to the maintenance staff.

  The communication line switching unit 60 is provided on the control device 20 side of the communication line 40, and inputs collected data for each round transmitted from the control device 20 on the site side to other than the remote monitoring device 30. That is, the communication line switching unit 60 is configured to be able to temporarily switch the communication line from the remote monitoring device 30 side to the portable monitoring device 70 side.

  The portable monitoring device 70 has the collected data at the normal time of the passenger conveyor that is obtained in advance, and compares the collected data at the normal time with the collected data input from the communication line switching unit 60 to determine whether there is an abnormality. An abnormality determining unit for determining is provided. That is, as shown in FIG. 3, the mobile monitoring device 70 is configured with functional blocks substantially equivalent to the remote monitoring device 30, and includes a data transmission / reception unit 71, a data processing unit 72, an abnormality notification unit 73, and a data processing unit, respectively. Memory 74, abnormality determination unit 75, and operation input unit 76. These functions are almost the same as the corresponding functional blocks of the remote monitoring device 30. The data transmission / reception unit 71 is configured to be able to arbitrarily switch between the wireless transmission / reception unit 77 and the wired transmission / reception unit 78.

  After the remote monitoring device 30 detects an abnormality in the passenger conveyor to be monitored and notifies the monitoring staff, the communication line switching section 60 dispatches a maintenance staff to the site and performs inspection and maintenance work and repairs on the site. It is switched by maintenance personnel to obtain maintenance inspection result data at the site. By this switching operation, the communication line is temporarily switched from the remote monitoring device 30 to the portable monitoring device 70, and a diagnosis equivalent to the remote monitoring device 30 is executed as a simple diagnosis in the portable monitoring device 70.

  Here, when the installation place of the control device 20 is a place where wired connection can be easily performed, such as the upper machine room 2 and the lower machine room 3, the wired transmission / reception unit 77 of the portable monitoring device 70 is selected and used. On the other hand, when it is difficult to make a wired connection at an arbitrary location of the truss 1 where the control device 20 is installed, the wireless transmission / reception unit 77 is selected and used.

  In the above configuration, the control device 20 includes the mobile sound collecting device 10c and the fixed type in a time zone where there are few people at the start of work or at the time of working in the facility where the passenger conveyor to be monitored is installed and the ambient noise is low. The operation sound of the passenger conveyor collected by the sound collecting devices 10a and 10b is input. Then, as the sound data that can transmit the operating sound, the sound data is stored for several turns for each turn based on the detection signal of the reference position passage sensor 50. Further, the stored collected data for each lap is transmitted to the remote location monitoring device 30 via the communication line 40.

  The remote monitoring device 30 receives the voice data transmitted from the control device 20 on the site side through the communication line 40. Then, the abnormality determination unit 35 of the data processing unit 32 determines whether or not there is an abnormality by comparing the received audio data for several laps with the normal voice data of the passenger conveyor obtained in advance.

  As a result of the abnormality diagnosis, if an abnormality of the passenger conveyor to be monitored is detected, the maintenance staff is dispatched to the site after notifying the monitoring staff. Maintenance personnel perform inspection and maintenance work and repairs on passenger conveyors to be monitored on site. When the work is terminated after this work, the field maintenance staff needs to obtain data for confirming that the abnormality has been resolved. Confirmation of this abnormality cancellation again transmits the operating sound of the passenger conveyor collected by the sound collecting devices 10c, 10a, 10b to the remote monitoring device 30, and the remote monitoring device 30 analyzes the passenger conveyor operating sound, It is conceivable to send the result to maintenance personnel.

  However, when the communication line 40 is a PHS line or the like and the transmission speed is low, it takes several tens of minutes or more for the transmission time of the passenger conveyor operating sound. For this reason, the work cannot be completed in the meantime, and an unnecessary waiting time occurs such that maintenance personnel cannot go to the next maintenance site.

  In this embodiment, when the maintenance inspection result data is obtained on the site side, the communication line switching unit 60 is switched to the portable monitoring device 70 side by the operation of the maintenance staff. Since the communication line is switched from the remote monitoring device 30 side to the portable monitoring device 70 side by this switching operation, the operating sound of the passenger conveyor collected by the sound collecting devices 10c, 10a, 10b after the maintenance and inspection work is the portable monitoring device. 70. The portable monitoring device 70 has a diagnostic function equivalent to that of the remote monitoring device 30, and the operation sound of the passenger conveyor collected by the sound collecting devices 10c, 10a, and 10b after this maintenance and inspection work is normal sound data. Compared with, the presence or absence of abnormality is simply diagnosed. Then, as a result of this simple diagnosis, when it is confirmed that there is no abnormality after the maintenance inspection work, the abnormality confirmation data is stored in the portable monitoring device 70, and the maintenance inspection or repair work is finished.

  As described above, since the portable monitoring device 70 performs confirmation of no abnormality after the maintenance inspection work on the site side, it is possible to obtain no abnormality data on the spot in a short time. Therefore, when the communication line 40 is at a low speed, it is not necessary to transmit the passenger conveyor operating sound that requires several tens of minutes or more to the remote monitoring device 30, so that the diagnosis after the maintenance check and repair work is performed efficiently. be able to.

  The maintenance staff confirms normal restoration of the passenger conveyor at the site, switches the communication line switching unit 60 to the remote monitoring device 30 side, returns the communication line 40 to the normal connection state, and optionally requests the remote monitoring device 30 to make a diagnosis. Out. For this reason, the remote monitoring device 30 performs basic data collection after improving the state of the passenger conveyor.

  In the present embodiment, the communication switching unit 60 is configured to manually switch the communication line, but may be configured to automatically connect to the communication line 40 after a preset time has elapsed after switching. . As a result, it is possible to cover forgetting to restore the connection of the communication line 40.

  As described above, in the passenger conveyor diagnostic system of the present embodiment, the sound collecting devices 10a, 10b, and 10c are substantially all of the passenger conveyor after the maintenance staff performs maintenance inspection and repair of the passenger conveyor to be monitored on site. Passenger conveyor sound is collected over the process. The passenger conveyor operating sound collected by the sound collectors 10a, 10b, and 10c is converted into voice data by the control device 20 at the passenger conveyor installation site, and installed in a remote monitoring center via the communication line 40. Instead of being sent to the remote monitoring device 30, it is sent to the portable monitoring device 70 instead. In the mobile monitoring device 70, the voice data of the passenger conveyor operating sound (monitoring voice data) is compared with normal time voice data collected in advance when normal, and a simple abnormality determination is performed. The mobile monitoring device 70 is notified. Therefore, according to this diagnostic system, when an abnormality is detected by the remote monitoring device 30, after a maintenance staff is available at the passenger conveyor installation site for maintenance inspection and repair, the communication line is connected at the passenger conveyor installation site. By switching to the mobile monitoring device 70 and performing a simple diagnosis, it is possible to quickly confirm the normal recovery of the passenger conveyor, reducing unnecessary waiting time for maintenance personnel even when the transmission speed of the communication line 40 is low. This makes it possible to move to the next maintenance site flexibly.

  Next, another embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the structure same as the above-mentioned embodiment, and the overlapping description is abbreviate | omitted. In the above-described embodiment, the sound collecting devices 10a, 10b, and 10c are exemplified as the data collecting means. However, in this embodiment, the sensor data recording device 16 shown in FIG. 4 is used as the data collecting means. The sensor data recording device 16 has a sensor for measuring vibration such as acceleration as the sensor 12. Therefore, in this case, the sensor data recording device 16 as the data collecting means 16 functions as a vibration sensor that detects vibrations generated when the passenger conveyor is operating. The sensor 12 is connected to the signal conversion unit 15, converted into transmission data by the signal conversion unit 15, and transmitted from the wireless transmission / reception unit 12 to the control device 20 shown in FIG. 1. In addition, power is supplied from the power supply unit 13 to the sensor 12, the signal conversion unit 10, and the wireless transmission / reception unit.

  The sensor data recording device 16 functioning as the vibration sensor and the sound collecting devices 10a, 10b, and 10c described in the above-described embodiments can be used as mobile and fixed data collecting means, but as fixed data collecting means. In addition to the sound collecting device or vibration sensor described above, the sensor 12 of the sensor data recording device 16 is a voltage sensor or current sensor for detecting the amount of electricity of a driving motor (not shown) that circulates and moves the step band, and the ambient temperature and humidity. Any one of these temperature / humidity sensors for detecting the above or a combination thereof may be used.

  The control device 20 also stores the data from the sensor data recording device 16 as data that can be transmitted for each lap from the reference position passing through the inspection step 5 to the next reference position passing timing. Collected data for each round is transmitted to a predetermined remote monitoring device 30 via the communication line 40.

  The remote monitoring device 30 receives each collected data transmitted from the control device 20 on the site side, and the abnormality determining unit 35 shown in FIG. 2 obtains the collected data for each received one round in advance. The presence / absence of abnormality is determined by comparing with each collected data of the passenger conveyor at normal time. In this case, the abnormality determination unit 35 uses the normal time data detected in advance by the respective sensors 12 described above as normal collected data and stored in the memory 34 as the comparison target.

  Further, the communication line switching unit 60 switches the communication line from the communication line 40 to the portable monitoring device 70, and a new diagnostic function corresponding to the collected data from the sensor 12 is installed in the portable monitoring device 70 shown in FIG. The maintenance inspection result can be confirmed.

  In the present embodiment configured as described above, the sensor data collected via the sensor data recording device 16 is temporarily stored in the memory 23 of the control device 20. The sensing data stored in the memory 23 is transmitted to the mobile monitoring device 70 after the switching operation of the communication line switching unit 60, and abnormality diagnosis is performed by combining various sensors using a new diagnostic function implemented in the mobile monitoring device 70. Is possible. In addition, it is possible to easily check a new diagnostic function before being installed in the remote monitoring device 30 without bringing a dedicated measuring instrument to the site.

  In this embodiment, the sampling frequency of the sensor 12 to be sensed is assumed to be a fixed value, but it may be configured to be changeable for each sensor. As a result, the abnormal event can be analyzed in more detail, and the sampling frequency of the sensor necessary for the abnormality diagnosis can be easily determined.

  As described above, in the passenger conveyor diagnosis system of the present embodiment, a sensor collected using the sensor data recording electrode 16 instead of the sound collector 10 as a data collecting means such as a diagnosis by a new sensing method. Since the data can be installed and checked in the portable monitoring device 70, the diagnostic function can be verified and verified before being installed in the remote monitoring device 30. In addition, by using the sensor data recording device 16, it is possible to bring a dedicated measuring instrument to the site and greatly reduce the time required for preparation for temporary installation or removal of the measuring instrument, and to reduce the transportation cost of the measuring instrument. Can be suppressed.

  All of the above-described embodiments are based on the assumption that the transmission speed of the communication line 40 is low. However, if the transmission speed of the communication line 40 is sufficiently high and the result of the arbitrary diagnosis by the remote monitoring device 30 can be notified to the maintenance staff in a few minutes, the diagnosis for normal recovery confirmation using the remote monitoring device 30 is possible. You may do it.

  In this case, the remote monitoring device 30 is connected to the communication line 40 as in the above-described embodiment, receives the collected data transmitted from the control device 20 on the site side, and receives the received one round. The abnormality determination unit 35 compares the collected data with the normal collection data obtained in advance to determine whether there is an abnormality. In addition to such a function, the present embodiment further includes a function of transmitting the determination result by the abnormality determination unit 35 to a predetermined transmission partner via the communication line 40.

  The mobile monitoring device 70 is configured to be connectable to the site side of the communication line 40. A function for receiving the determination result by the abnormality determination unit 35 transmitted from the remote monitoring device 30 at the time of connection is provided.

  With this configuration, the maintenance staff at the site can obtain the recovery confirmation data after the maintenance inspection from the mobile terminal 70 without requiring line switching at the site. This frees maintenance personnel from labor other than inspection and maintenance work.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

4 ... Step 5 ... Inspection step 10a, 10b, 10c, 16 ... Data collection means 20 ... Control device on the site side 30 ... Remote monitoring device 40 ... Communication line 50 ... Reference position passing sensor 60 ... Line switching device 70 ... Portable monitoring device

Claims (8)

An abnormality diagnosis system for a passenger conveyor that circulates and moves a step band in which a plurality of steps are connected endlessly,
Mobile data collection means provided on at least one inspection step constituting the step band and moving with the inspection step to detect an event occurring on the passenger conveyor;
A reference position passage sensor for detecting a timing at which the inspection step passes a reference position set in the circulation movement path of the step band;
The collected data that can be collected by the data collecting means is stored as data that can be transmitted every lap from the reference position passing through the next reference position passing timing of the inspection step detected by the reference position passing sensor. A field side control device that transmits collected data for each lap to a predetermined transmission partner via a communication line;
The collected data connected to the communication line and transmitted from the on-site control device is received, and the received collected data for each lap is obtained in advance as normal collected data of the passenger conveyor that is obtained in advance. A remote monitoring device having an abnormality determination unit for determining the presence or absence of an abnormality in comparison;
A communication line switching unit that is provided on the site side control device side of the communication line, and that inputs the collected data for each lap transmitted from the site side control device to other than the remote monitoring device;
The abnormality determination unit which has the collected data at the normal time of the passenger conveyor obtained in advance and compares the collected data at the normal time with the collected data input from the communication line switching unit to determine whether there is an abnormality A portable monitoring device having
An abnormality diagnosis device for a passenger conveyor, comprising: An abnormality diagnosis system for a passenger conveyor that circulates and moves a step band in which a plurality of steps are connected endlessly,
Mobile data collection means provided on at least one inspection step constituting the step band and moving with the inspection step to detect an event occurring on the passenger conveyor;
A reference position passage sensor for detecting a timing at which the inspection step passes a reference position set in the circulation movement path of the step band;
The collected data of the data collection means is stored as data that can be transmitted every lap from the reference position passing through the next reference position passing timing of the inspection step detected by the reference position passing sensor. A site-side control device that transmits collected data for each lap to a predetermined transmission partner via a communication line;
The collected data connected to the communication line and transmitted from the on-site control device is received, and the received collected data for each lap is obtained in advance as normal collected data of the passenger conveyor that is obtained in advance. A remote monitoring device that has an abnormality determination unit that determines the presence or absence of an abnormality by comparison, and transmits a determination result of the abnormality determination unit to a predetermined transmission partner via the communication line;
A portable monitoring device that can be connected to the site side control device side of the communication line and that receives the determination result transmitted from the remote monitoring device at the time of connection;
An abnormality diagnosis device for a passenger conveyor, comprising: A fixed data collecting means that is installed in a predetermined fixed portion of the passenger conveyor and detects an event that occurs when the stepping belt that circulates moves through the installation location;
The on-site control device stores the collected events of the fixed data collecting means as data that can be transmitted for each lap from the reference position passing through the next reference position passing timing of the inspection step. It has a function to transmit the collected data for each lap stored to a predetermined transmission partner via each communication line,
The remote monitoring device receives each collected data transmitted from the on-site control device, and the abnormality determination unit obtains the collected data for each of the received laps of the passenger conveyor that has been obtained in advance. The abnormality diagnosis system for a passenger conveyor according to claim 1 or 2, wherein the abnormality diagnosis system has a function of determining the presence or absence of abnormality in comparison with each collected data at normal time.   The data collecting means is a sound collecting device that collects passenger conveyor operating sound as a collecting event, and the on-site control device converts the passenger conveyor operating sound collected by the sound collecting device into sound data that can be transmitted. The abnormality diagnosis system for a passenger conveyor according to any one of claims 1 to 3, wherein the system is stored as collected data for each round.   The data collection means is a vibration sensor that detects vibrations that occur during operation of the passenger conveyor as a collection event, and the on-site control device stores the vibration data detected by the vibration sensor as collection data that can be transmitted for each lap. The abnormality diagnosis system for a passenger conveyor according to any one of claims 1 to 3.   In addition to the sound collecting device that collects the operating sound of the passenger conveyor or the vibration sensor that detects the vibration generated when the passenger conveyor is operating, the fixed data collection means includes the electric quantity of the driving motor that circulates and moves the step band. The abnormality diagnosis system for a passenger conveyor according to claim 3, wherein the abnormality diagnosis system is configured by any one of a voltage sensor and a current sensor for detecting an on-state, a temperature / humidity sensor for detecting an on-humidity around the installation location, or a combination thereof.   7. The passenger conveyor abnormality diagnosis system according to claim 6, wherein a sampling frequency of data of the sensor as the data collection means can be arbitrarily changed from the portable monitoring device.   2. The passenger according to claim 1, wherein the communication line switching unit restores the connection to the remote monitoring device when a predetermined time elapses when the communication line is switched to a device other than the remote monitoring device. Conveyor abnormality diagnosis system.

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