JP2010018417A - System for diagnosing abnormality of passenger conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately diagnose abnormality of a passenger conveyor by gathering operation noise of the passenger conveyor without including disturbance noise and diagnosing based on the gathered operation noise of the passenger conveyor. <P>SOLUTION: With timing estimating that disturbance noise except operation noise of an escalator is a standard level or less such as in starting and stop of the escalator and in stop thereof with automatic operation and waiting operation thereof at a low speed, a CPU 21 of a monitor device 20 makes a sound gathering device 17 gather operation noise of the escalator and makes a build-in memory 22 store the sound data. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an abnormality diagnosis system for diagnosing abnormality of passenger conveyors such as escalators and moving walkways.

  Passenger conveyors such as escalators and moving walkways circulate and move a large number of steps connected endlessly by a chain along the guide rails arranged inside the truss by a motor drive. It is a structure which conveys from one boarding gate to the other boarding gate. In a passenger conveyor having such a structure, abnormalities such as rubbing or riding on moving parts, for example, due to wear of articles due to long-term operation, aging deterioration of installation adjustment state, foreign matter mixing, mischief by passengers, etc. Such anomalies often appear as sounds.

  For example, drive sprocket shafts and driven sprocket shafts that transmit the rotational force of the motor to the chain to drive the steps, and roller parts attached to each step usually have mechanically long-life bearings. Although it is used, if these bearings are damaged, abnormal noise is generated. Further, if the rollers provided on each step are worn, abnormal noise is generated. In addition, when a bolt loosens due to aging or a foreign object is caught in the guide rail that guides the movement of the step, an abnormal noise is generated each time the step passes. In addition, when the demarcation comb mounted on the outer periphery of the step surface is poorly attached and interferes with the skirt guard panels on both sides of the step, abnormal noise is generated. In addition, when a chain connecting a number of steps is elongated due to aging, abnormal noise is generated. In addition, if any abnormality occurs in the passenger conveyor due to various factors, the abnormality appears as an abnormal noise when the passenger conveyor is operating.

  When an abnormal noise is generated from the passenger conveyor, a maintenance worker who has been contacted by the customer usually 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 replacement or adjustment work of components that are the cause of the abnormal noise is performed. For this reason, the time which stops the service of a passenger conveyor becomes long, and a user is often inconvenienced. In addition, when maintenance personnel identify the cause of abnormal noise on site, there are many differences in accuracy and speed depending on the level of skill of maintenance personnel who have visited the site. In some cases, the service was forced to stop for a long time.

Under such a background, for example, in Patent Document 1, a plurality of microphones are arranged inside the truss, and the passenger conveyor operating sound collected by these microphones is stored in the storage device as a sound signal and stored in the storage device. It has been proposed to transmit a sound signal to a monitoring room at a remote location via a telephone line so that the passenger conveyor operating sound can be confirmed at the remote location.
JP 11-335056 A

  However, when diagnosing an abnormality at a remote location based on the operation sound of the passenger conveyor collected by the microphone, depending on the timing at which the passenger conveyor operation sound is collected, for example, footsteps accompanying passenger getting on and off, destination Disturbance sounds such as guidance voices such as guidance and caution guidance, and BGM flowing in the facility where the passenger conveyor is installed are often included in the passenger conveyor operating noise, and abnormal noise components due to abnormalities in the passenger conveyor from this passenger conveyor operating noise It is difficult to accurately determine the abnormality of the passenger conveyor.

  The present invention was devised in view of the conventional situation as described above, and collects passenger conveyor operation sound so as not to include disturbance noise, and is abnormal based on the collected passenger conveyor operation sound. An object of the present invention is to provide an abnormality diagnosis system for passenger conveyors that can perform diagnosis with high accuracy.

  The abnormality diagnosis system for a passenger conveyor according to the present invention includes: sound collecting means for collecting operating sound of the passenger conveyor; storage means for storing sound data of passenger conveyor operating sound collected by the sound collecting means; Analyzing the stored sound data and diagnosing abnormalities in the passenger conveyor, and the passenger conveyor operating sound to the sound collecting means at a timing when disturbance sound other than passenger conveyor operating noise is assumed to be below the reference level Control means for collecting sound and storing the sound data of the passenger conveyor operating sound in the storage means.

  According to the abnormality diagnosis system for a passenger conveyor according to the present invention, it is possible to collect passenger conveyor operation sound so as not to include disturbance noise, and accurately perform abnormality diagnosis based on the collected passenger conveyor operation sound. Can do.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, as an example of a passenger conveyor, an escalator in which a large number of steps move obliquely across the upper and lower floors is illustrated, but of course, the present invention has a large number of steps (step boards) continuously horizontal. The present invention can be effectively applied to a case where a moving sidewalk that moves in a direction is a diagnosis target.

[First Embodiment]
FIG. 1 is a diagram showing a schematic configuration of an abnormality diagnosis system to which the present invention is applied. As shown in FIG. 1, the escalator to be diagnosed is supported by a truss 3 that is fastened to an upper floor beam 1 and a lower floor beam 2 and is installed between upper and lower floors. An escalator driving device 4 is installed in the truss 3 on the upper floor beam 1 side. The drive device 4 is controlled in operation by the control panel 5 and drives the drive sprocket 7 via the drive chain 6. A driven sprocket 8 that is paired with the drive sprocket 7 is installed in the truss 3 on the lower beam 2 side, and a step chain 9 is wound between the drive sprocket 7 and the driven sprocket 8. ing. A number of steps 10 are connected to the step chain 9, and the driving device 4 rotates the driving sprocket 7, so that the step chain 9 circulates between the driving sprocket 7 and the driven sprocket 8, and a large number of steps. 10 has a structure that circulates between an upper floor entrance and a lower floor entrance along a guide rail (not shown).

  Further, a balustrade 13 comprising a deck board 11 and a balustrade panel 12 is erected on both the left and right sides of the circulating step 10, and a handrail belt 14 is attached to the outer periphery of the balustrade panel 12. The handrail belt 14 is a handrail gripped by a passenger boarded on the step 10. For example, when the driving force of the driving device 4 described above is transmitted, the periphery of the balustrade panel 12 is synchronized with the movement of the step 10. Go around. An operation panel 15 is installed on the deck board 11 on the upper floor and the lower floor. An operation switch for starting / stopping the escalator and a buzzer for starting / stopping operation are provided on the operation panel 15. Various operation switches 16 are provided for operation by an escalator administrator or maintenance worker, such as a buzzer switch for sounding. Various operation switches 16 provided on the operation panel 15 are connected to the control panel 5.

  The control panel 5 includes an operation circuit that controls the operation of the escalator, and controls the power supply to the motor in the drive device 4 by the operation circuit in accordance with the switch operation of the operation switch 16 to raise, lower, and stop the escalator. Perform operation control. The control panel 5 is connected to a monitoring device 20 provided at an escalator installation site. When an operation / stop control command is output from the monitoring device 20, the escalator is raised or lowered according to the control command. -Stop operation control is performed.

  In the escalator configured as described above, at least one of a large number of steps 10 that circulate is used as an inspection step 10A so that diagnosis by the abnormality diagnosis system of the present embodiment can be performed. A moving sound collecting device 17a that collects escalator operating sound while circulating along with the checking step 10A is installed inside the checking step 10A. For example, fixed sound collectors 17b and 17c for collecting escalator operating sound from a fixed point are installed on the lower floor side and upper floor side of the truss 3, for example. The escalator operating sound collected by the mobile sound collecting device 17a is input to the monitoring device 20 as a radio signal, and the escalator operating sound collected by the fixed sound collecting devices 17b and 17c is input to the monitoring device 20 as a wired signal or a radio signal. Entered. In the following description, these moving sound collecting devices 17a and fixed sound collecting devices 17b and 17c are collectively referred to as the sound collecting device 17 unless otherwise specifically distinguished.

  The monitoring device 20 causes the sound collecting device 17 to collect the escalator working sound at a timing at which occurrence of disturbance noise other than the escalator working sound is assumed to be small, and the sound of the escalator working sound collected by the sound collecting device 17. Store data in internal memory. In particular, in the present embodiment, the sound collecting device 17 is activated simultaneously with the activation of the escalator to be diagnosed, and the sound collecting device 17 collects the escalator operating sound during a predetermined time immediately after the escalator is activated. Data is stored in an internal memory. Escalators installed in facilities are generally activated before the start of the facility, and since there are no users immediately after activation, there are relatively few disturbance sounds and the disturbance sounds are considered to be below the reference level. Because. Note that the reference level here is of a magnitude that does not adversely affect the diagnosis when the abnormality diagnosis is performed using the sound data of the escalator operating sound.

  The monitoring device 20 is connected to a remote monitoring device 30 installed in a remote monitoring center via a communication network CN, and is in memory at a request from the remote monitoring device 30 or at a predetermined timing. Is transmitted to the remote monitoring device 30 via the communication network CN. The monitoring device 20 also has a function of outputting a control command to the control panel 5 as necessary, and causing the control panel 5 to perform escalator operation control according to the control command.

  The remote monitoring device 30 receives the sound data of the escalator operating sound transmitted from the monitoring device 20 via the communication network CN, and analyzes the received sound data of the escalator operating sound, thereby diagnosing an abnormality in the escalator. Specifically, the remote monitoring device 30 stores, for example, sound data of normal escalator operation sound collected when there is no abnormality in the escalator, and the escalator operation transmitted from the monitoring device 20 is stored. An abnormal sound component is extracted by comparing the sound data of the sound with normal sound data, and an abnormality is diagnosed from the characteristics of the abnormal sound component.

  In the present embodiment, sound data of the escalator operating sound is transmitted from the monitoring device 20 to the remote monitoring device 30, and the sound data is analyzed by the remote monitoring device 30 to diagnose an abnormality in the escalator. The monitoring device 20 may analyze the sound data of the escalator operating sound to diagnose an abnormality in the escalator, and transmit the diagnosis result to the remote monitoring device 30.

  Here, the details of the monitoring device 20 in the abnormality diagnosis system of the present embodiment will be described more specifically.

  FIG. 2 is a block diagram illustrating an internal configuration of the monitoring device 20. As shown in FIG. 2, the monitoring device 20 includes a CPU 21 that performs data processing, a memory 22 that stores sound data of escalator operating sound, a sound collection time counting timer 23 that counts the sound collection time of the escalator operating sound, And interface (I / F) 24a, 24b, 24c for inputting sound data of the escalator operating sound from the moving sound collecting device 17a and the fixed sound collecting devices 17b, 17c.

  The CPU 21 monitors the operation signal of the escalator from the control panel 5, and when the operation signal for starting the escalator is output from the control panel 5, the CPU 21 starts the sound collection time counting timer 23 and moves the moving collection signal. At least one of the sound collecting device 17a and the fixed sound collecting devices 17b and 17c is activated, and the sound data of the escalator operating sound collected by the activated sound collecting device 17 is transmitted via the interfaces 24a to 24c. Enter. Then, the CPU 21 stores the input sound data of the escalator operating sound in the memory 22.

  At this time, when the sound data of the escalator operating sound stored in the memory 22 is transmitted to the remote monitoring device 30 later, the CPU 21 can identify what kind of data the data is. Therefore, the escalator identification data indicating which escalator is operating sound, the sound collector identification data indicating which sound collector 17 is the escalator operating sound collected by the sound collector 17, If the escalator is operating in ascending or descending operation, or if the operation speed is switched, the escalator operation sound such as whether the escalator is operating at high speed or low speed, and the input escalator operating sound data Is stored in the memory 22.

  Thereafter, the CPU 21 stores the sound data of the input escalator operating sound in the memory 22 at any time until the sound collection time counting timer 23 finishes counting the set time, and the sound collection time counting timer 23 When the set time has been counted, the sound collecting device 17 stops collecting the escalator operating sound, and the storage of the sound data in the memory 22 is finished. Here, the set time of the sound collection time counting timer 23 may be set to be equal to or longer than the time required for the escalator step 10 to make one round of the moving circulation path.

  In this embodiment, the sound data of the escalator operating sound collected by the sound collecting device 17 is input to the monitoring device 20 as needed and stored in the memory 22 inside the monitoring device 20 as needed. A memory having a sufficient capacity for storing sound data is provided in the device 17, and the sound data is stored in the memory of the sound collecting device 17 while the sound collecting device 17 collects the escalator operating sound. After the sound collecting device 17 collects the escalator operating sound, the sound data of the escalator operating sound may be input to the monitoring device 20 and stored in the memory 22 inside the monitoring device 20.

  As described above in detail with specific examples, according to the abnormality diagnosis system of the present embodiment, a predetermined time immediately after the start of the escalator, in which the disturbance sound other than the escalator operation sound is predicted to be relatively small, is expected. In the meantime, since the sound collecting device 17 collects the escalator operating sound and stores the sound data in the memory 22 of the monitoring device 20, the sound data of the escalator operating sound is used to diagnose the escalator abnormality. When performing, it is possible to suppress an adverse effect on the diagnosis due to the disturbance noise as much as possible, and to accurately perform the escalator abnormality diagnosis.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The abnormality diagnosis system of this embodiment is different from the first embodiment described above in the timing at which the sound collecting device 17 collects the escalator operating sound. In other words, in the first embodiment, the sound collecting device 17 collects the escalator operating sound during a predetermined time immediately after the escalator is activated. In the present embodiment, however, a predetermined standby is performed after the escalator is activated. The sound collecting device 17 is activated after a lapse of time, and the sound collecting device 17 collects the escalator operating sound during a predetermined time thereafter.

  Immediately after the escalator is activated, if the manager or worker who operated the operation switch 16 of the operation panel 15 is near the escalator, the footstep sound becomes a disturbance sound, or the temperature is too low environmentally For example, since some time is required until each part of the escalator operates normally, the sound generated until then becomes a disturbance sound, and the disturbance sound may exceed the reference level. Therefore, in the abnormality diagnosis system of the present embodiment, the sound collecting device 17 waits without collecting the escalator operating sound in the sound collecting device 17 for a predetermined time after the escalator is activated, and after the standby time has elapsed, the sound collecting device 17 The sound collection of the escalator operation sound by is started.

  FIG. 3 is a block diagram showing an internal configuration of the monitoring device 20 in the abnormality monitoring system of the present embodiment. In this embodiment, as shown in FIG. 3, in addition to the CPU 21, the memory 22, the sound collection time counting timer 23, and the interfaces 24 a to 24 c described in the first embodiment, the monitoring device 20 includes a standby time. A timer 25 for counting is added.

  The CPU 21 monitors the operation signal of the escalator from the control panel 5, and when the operation signal for starting the escalator is output from the control panel 5, first, the standby time counting timer 25 is started. When the standby time counting timer 25 finishes counting the set time, the sound collecting time counting timer 23 is started and at least one of the moving sound collecting device 17a and the fixed sound collecting devices 17b and 17c. The sound collecting device 17 is activated, sound data of the escalator operating sound collected by the activated sound collecting device 17 is input via the interfaces 24 a to 24 c, and the sound data is stored in the memory 22. Here, the set time of the waiting time counting timer 25 may be set in advance by measuring the time until each unit of the escalator normally operates at low temperatures by an experiment or the like.

  Thereafter, as in the first embodiment, the CPU 21 stores the sound data of the input escalator operation sound in the memory 22 as needed until the sound collection time counting timer 23 finishes counting the set time. When the sound collection time counting timer 23 finishes counting the set time, the sound collection device 17 stops collecting the escalator operating sound, and the storage of the sound data in the memory 22 is finished.

  As described above, according to the abnormality diagnosis system of the present embodiment, the sound collecting device 17 collects the escalator operating sound during a predetermined time after the predetermined standby time has elapsed after the escalator is activated. Since the sound data is stored in the memory 22 of the monitoring device 20, it is possible to prevent the sound collecting device 17 from collecting the disturbance sound that may occur immediately after the start of the escalator. It is possible to more reliably prevent adverse effects on the diagnosis and more accurately perform escalator abnormality diagnosis.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. The abnormality diagnosis system of the present embodiment is different from the first and second embodiments described above in the timing at which the sound collecting device 17 collects the escalator operating sound. That is, in the first and second embodiments, the sound collecting device 17 collects sound of the escalator operating sound when the escalator is started. In this embodiment, the sound collecting device 17 performs the sound collecting when the escalator is stopped. The escalator operating sound is collected.

  When the escalator to be diagnosed is installed in a facility such as a store, the situation where the facility closes after business is closed and the escalator is stopped is the quiet environment where there are no users around the escalator. Therefore, it is considered that the disturbance sound is relatively small and the disturbance sound is below the reference level. Therefore, in the abnormality diagnosis system of the present embodiment, when there is an operation input for stopping the escalator, the sound collecting device 17 collects the escalator operating sound for a predetermined time, and then stops the escalator operation. I am doing so.

  FIG. 4 is a block diagram showing an internal configuration of the monitoring device 20 in the abnormality monitoring system of the present embodiment. In the present embodiment, as shown in FIG. 4, an escalator stop command by the operation of the operation switch 16 is input to the CPU 21 inside the monitoring device 20, and the CPU 21 causes the control panel 5 to stop the escalator operation. Control commands can be output.

  When an escalator stop command is input by operating the operation switch 16, the CPU 21 starts the sound collection time counting timer 23 and at least one of the moving sound collection device 17a and the fixed sound collection devices 17b and 17c. The sound collecting device 17 is activated, sound data of the escalator operating sound collected by the activated sound collecting device 17 is input via the interfaces 24 a to 24 c, and the sound data is stored in the memory 22.

  Thereafter, as in the first embodiment, the CPU 21 stores the sound data of the input escalator operation sound in the memory 22 as needed until the sound collection time counting timer 23 finishes counting the set time. When the sound collection time counting timer 23 finishes counting the set time, the sound collection device 17 stops collecting the escalator operating sound, and the storage of the sound data in the memory 22 is finished. Thereafter, the CPU 21 outputs a control command for stopping the operation of the escalator to the control panel 5 to stop the operation of the escalator.

  As described above, according to the abnormality diagnosis system of the present embodiment, the escalator operating sound is transmitted to the sound collector 17 during a predetermined time before the escalator is stopped, where it is predicted that disturbance noise other than the escalator operating sound is relatively low. Since the sound data is collected and stored in the memory 22 of the monitoring device 20, the sound data of the escalator operating sound is used to diagnose an abnormality of the escalator, which has an adverse effect on the diagnosis due to the disturbance sound. As much as possible, escalator abnormality diagnosis can be performed with high accuracy.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. The abnormality diagnosis system of the present embodiment is an example in the case where a so-called automatic driving escalator is a diagnosis target. An automatic operation type escalator normally stops or operates at low speed standby, and operates at a normal speed for a predetermined time after detecting the approach of a passenger, and consumes less power than a general escalator. There are cases where it is operated for 24 hours because it is small. For this reason, it is difficult to collect the escalator operating sound when the escalator is activated or stopped, and it is necessary to collect the escalator operating sound at some timing during activation.

  Here, the automatic operation escalator is configured to perform stop or low-speed standby operation until the passenger approach is detected as described above, in other words, the automatic operation escalator performs stop or low-speed standby operation. During this period, there are no users in the surrounding area, so there is relatively little disturbance noise and the disturbance noise is considered to be below the reference level. Therefore, in the abnormality diagnosis system of the present embodiment, when the automatic operation escalator is stopped or performing the low-speed standby operation, the sound collecting device 17 is activated and the escalator is switched to the normal operation, and the predetermined time thereafter. Meanwhile, the sound collector 17 collects the escalator operating sound, and when the sound collector 17 collects the escalator operating sound, the escalator is stopped or returned to the low-speed standby operation.

  FIG. 5 is a block diagram showing an internal configuration of the monitoring device 20 in the abnormality monitoring system of the present embodiment. In this embodiment, as shown in FIG. 5, a passenger detection sensor 18 and an automatic operation timer 19 are connected to the control panel 5, and the automatic operation of the escalator is controlled by the control panel 5. In other words, the control panel 5 normally stops the escalator or puts the escalator into a state of low-speed standby operation, and switches the escalator operation to operation at the normal speed when the passenger detection sensor 18 detects that the passenger has approached the escalator. At the same time, the automatic operation timer 19 is started, and then the escalator is stopped or returned to the low-speed standby operation when the automatic operation timer 19 finishes counting the set time.

  The operating state of the escalator that is automatically controlled by the control panel 5 can be confirmed by an operation signal output from the control panel 5, and in this embodiment, the operation signal from the control panel 5 is monitored. 20 is input. In the present embodiment, the CPU 21 in the monitoring device 20 is configured to output a control command for instructing switching of the escalator operation to the control panel 5, and the control command is output from the CPU 21 in the monitoring device 20. When it is done, the control panel 5 controls the operation switching of the escalator in accordance with this control command.

  The CPU 21 monitors the operation state of the escalator controlled automatically based on the operation signal output from the control panel 5, and when the escalator is stopped or performing a low-speed standby operation, a sound collection time counting timer 23, and at least one of the moving sound collecting device 17a and the fixed sound collecting devices 17b and 17c is activated. The sound data of the escalator operating sound collected by the activated sound collecting device 17 is input via the interfaces 24 a to 24 c, and the sound data is stored in the memory 22. Further, the CPU 21 outputs a control command for instructing the control panel 5 to switch the escalator to the operation at the normal speed when the sound collecting device 17 starts collecting the escalator operating sound. The sound collecting device 17 collects the sound of the escalator operation while driving at the normal speed.

  Thereafter, the CPU 21 stores the sound data of the input escalator operating sound in the memory 22 at any time until the sound collection time counting timer 23 finishes counting the set time, and the sound collection time counting timer 23 When the set time has been counted, the sound collecting device 17 stops collecting the escalator operating sound, and the storage of the sound data in the memory 22 is finished. Then, the CPU 21 outputs a control command instructing the control panel 5 to stop the escalator or switch to the low speed standby operation, and stops the escalator or returns to the low speed standby operation.

  When the passenger detection sensor 18 detects the approach of the passenger while the sound collecting device 17 is collecting the escalator operating sound, the sound collecting device 17 stops collecting the escalator operating sound and there is a passenger. The sound collecting device 17 may collect the escalator operating sound again after the situation has not been reached. Specifically, when an approach of a passenger is detected by the passenger detection sensor 18, the control panel 5 outputs a passenger detection signal to the monitoring device 20 and starts counting of the automatic operation timer 19. When the passenger detection signal is input from the control panel 5, the CPU 21 of the monitoring device 20 stops collecting the escalator operating sound by the sound collecting device 17 and resets the sound collecting time counting timer 23. When the set time has been counted, the sound collecting time counting timer 23 is started again and the sound collecting device 17 is activated to start collecting the escalator operating sound by the sound collecting device 17.

  As described above, according to the abnormality diagnosis system of this embodiment, the automatic operation type escalator is stopped or performing low-speed standby operation, there are no users around the escalator, and there is relatively little disturbance noise. Since the escalator operating sound is collected by the sound collecting device 17 at the expected timing and the sound data is stored in the memory 22 of the monitoring device 20, the sound data of the escalator operating sound is used for the escalator operation sound. When performing an abnormality diagnosis, it is possible to perform an escalator abnormality diagnosis with high accuracy by minimizing the adverse effects of the disturbance noise on the diagnosis as much as possible.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described. The abnormality diagnosis system of the present embodiment is an example in the case where a sound output device that outputs a guidance sound to an escalator to be diagnosed is provided, and while the sound collection device 17 is collecting sound of the escalator operation sound In addition, control is performed so that the guidance voice by the voice output device does not become disturbance sound.

  FIG. 6 is a diagram showing a schematic configuration of the abnormality diagnosis system of the present embodiment. In the present embodiment, an audio output device 40 is provided on an escalator to be diagnosed. This voice output device 40 is connected to the control panel 5 via the contact 41 and repeatedly outputs guidance voices such as destination guidance and caution guidance from the speaker 42 in accordance with voice output commands from the control board 5.

  The contact 41 between the control panel 5 and the sound output device 40 can be turned on / off by the output from the monitoring device 20, and when the contact 41 is turned off, the sound output command from the control panel 5 is cut off. The output of the guidance voice by the voice output device 40 is stopped.

  The monitoring device 20 collects the escalator operating sound by the sound collecting device 17 at any timing described in the first to fourth embodiments, but collects the escalator operating sound. In the meantime, the contact 41 is turned off, and the guidance voice output by the voice guidance device 40 is stopped. When the sound collecting device 17 finishes collecting the escalator operating sound, the contact 41 is switched to ON, and the guidance voice output by the voice guiding device 40 is resumed. When the monitoring device 20 receives an instruction to collect the escalator operating sound from the remote monitoring device 30 of the monitoring center, the monitoring device 20 turns off the contact 41 and stops the output of the guidance voice by the voice guidance device 40. From the above, sound collection of the escalator operation sound by the sound collection device 17 may be performed.

  As described above, according to the abnormality diagnosis system of the present embodiment, the output of the guidance voice by the voice guidance device 40 is stopped while the sound collecting device 17 is collecting the escalator operating sound. Therefore, it is possible to effectively prevent the inconvenience that the guidance voice by the voice guidance device 40 becomes a disturbance sound, and to accurately perform escalator abnormality diagnosis using the sound data of the escalator operating sound.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described. In the abnormality diagnosis system of the present embodiment, when the escalator operation sound is collected by the sound collection device 17, the fact is displayed on the display device so that a maintenance worker at the site understands the operation status. This is an example.

  As described in the above-described embodiments, the sound collection of the escalator operation sound by the sound collection device 17 is autonomously performed according to the control by the monitoring device 20 without depending on the operation of a maintenance worker in the field. If the maintenance worker or the like does not recognize that the sound collecting device 17 is collecting the escalator operating sound, the operation status of the escalator may feel uncomfortable. For example, in the example described as the third embodiment, even if the maintenance worker operates the operation switch 16 to stop the escalator, the escalator operation sound is not collected until the sound collection device 17 collects the escalator operating sound. In the example described as the fourth embodiment, the escalator may stop or switch from the low-speed standby operation to the normal operation in the example described as the fourth embodiment, and the fifth embodiment. In the example described above, the output of the guidance voice may stop, and a maintenance worker or the like feels uncomfortable with the operation status of such an escalator. Therefore, in the present embodiment, when the sound collecting device 17 is collecting the escalator operating sound, the fact is displayed on the display to indicate that the escalator operating sound is being collected. So that you don't feel uncomfortable.

  FIG. 7 is a diagram showing a schematic configuration of the abnormality diagnosis system of the present embodiment. In this embodiment, the display device 50 is installed at an arbitrary position around the escalator to be diagnosed so that a maintenance worker or the like can easily check. The display device 50 is connected to the monitoring device 20 and is controlled in accordance with the output from the monitoring device 20.

  The monitoring device 20 outputs an operation command to the display device 50 when the sound collecting device 17 collects the escalator operating sound at any timing described in the first to fourth embodiments. Then, the display 50 displays that the escalator operating sound is being collected by the sound collecting device 17. When the sound collecting device 17 collects the escalator operating sound, a stop command is output to the display device 50, and the display operation by the display device 50 is ended. When the monitoring device 20 receives an instruction to collect the escalator operating sound from the remote monitoring device 30 of the monitoring center, the monitoring device 20 outputs an operation command to the display device 50 and performs a display operation on the display device 50. While performing, you may make it implement the sound collection of the escalator operating sound by the sound collector 17.

  As described above, according to the abnormality diagnosis system of the present embodiment, while the sound collecting device 17 is collecting the escalator operating sound, the display 50 displays that the escalator operating sound is being collected. Therefore, it is possible to make a maintenance worker recognize that the escalator operating sound is being collected and not to feel uncomfortable with respect to the operating state of the escalator.

[Seventh Embodiment]
Next, a seventh embodiment of the present invention will be described. The abnormality diagnosis system according to the present embodiment stores sound data of escalator operation sound immediately before the escalator stops in an emergency in the memory 22 in the monitoring device 20, and analyzes the sound data so that escalator abnormality diagnosis can be performed. This is an example.

  The escalator to be diagnosed is generally provided with a safety device that operates when an abnormality occurs and stops the escalator. When such a safety device is activated and the escalator stops in an emergency, there may be some abnormality such as equipment damage before stopping, and if abnormal noise at that time can be confirmed, it may lead to an early solution of the problem There is sex. Therefore, in the present embodiment, the monitoring device 20 always collects the escalator operating sound in the sound collecting device 17 and stores it in the internal memory 22 while overwriting the sound data until the escalator is started and stopped. I try to let them. Further, the address of the stored sound data on the memory 22 is written in the address pointer, and the sound data of the escalator operating sound corresponding to one round of the step 10 can be specified from the position of the address pointer.

  FIG. 8 is a block diagram showing an internal configuration of the monitoring device 20 in the abnormality monitoring system of the present embodiment.

  The CPU 21 monitors the operation signal of the escalator from the control panel 5, and when the operation signal for starting the escalator is output from the control panel 5, the moving sound collecting device 17a and the fixed sound collecting devices 17b and 17c. At least one of the sound collecting devices 17 is activated, and sound data of the escalator operating sound collected by the activated sound collecting device 17 is input via the interfaces 24a to 24c. Then, the CPU 21 stores the sound data of the input escalator operating sound in the memory 22 as needed, and writes the address on the memory 22 storing the sound data in the address pointer.

  The memory area for storing the sound data in the memory 22 stores the sound data in a ring shape. When the end of the address assigned to the memory area is reached, the sound data is returned to the head address from there. Will be overwritten. While the escalator is operating, the CPU 21 stores the sound data of the escalator operating sound in the memory 22 while overwriting the sound data as described above, and an operation signal for stopping the escalator is output from the control panel 5. Then, the collection of the escalator operating sound by the sound collecting device 17 is stopped, and the storage of the sound data in the memory 22 is ended.

  As a result, the sound data of the escalator operation sound immediately before the escalator stops is stored in the memory 22, and the sound data of the escalator operation sound for one round before the stop can be specified from the position of the address pointer. By analyzing the sound data at the time of emergency stop, it is possible to detect the above-mentioned equipment damage or the like.

  As described above, according to the abnormality diagnosis system of the present embodiment, since the sound data of the escalator operating sound immediately before the stop is stored in the memory 22 inside the monitoring device 20, when the escalator stops in an emergency By analyzing the sound data, it is possible to detect a device breakage or the like that has caused an emergency stop, and to solve the problem early.

  The first to seventh embodiments described above exemplify an application example of the present invention, and the technical scope of the present invention is limited to the contents described in each of the above embodiments. Not intended. That is, the technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiments, but includes various modifications, changes, alternative techniques, and the like that can be easily derived from this disclosure.

The figure which shows schematic structure of the abnormality diagnosis system to which this invention is applied. The block diagram which shows the internal structure of the monitoring apparatus in the abnormality diagnosis system of 1st Embodiment. The block diagram which shows the internal structure of the monitoring apparatus in the abnormality diagnosis system of 2nd Embodiment. The block diagram which shows the internal structure of the monitoring apparatus in the abnormality diagnosis system of 3rd Embodiment. The block diagram which shows the internal structure of the monitoring apparatus in the abnormality diagnosis system of 4th Embodiment. The figure which shows schematic structure of the abnormality diagnosis system of 5th Embodiment. The figure which shows schematic structure of the abnormality diagnosis system of 6th Embodiment. The block diagram which shows the internal structure of the monitoring apparatus in the abnormality diagnosis system of 7th Embodiment.

Explanation of symbols

5 Control panel 17 Sound collector 20 Monitoring device (control means)
21 CPU
22 Memory (storage means)
23 Timer 24 for collecting sound collection time 24a-24c Interface 25 Timer for counting standby time 30 Remote monitoring device 40 Audio output device 50 Display (display means)

Claims (8)

An abnormality diagnosis system for a passenger conveyor that circulates a number of steps connected endlessly and conveys passengers who have boarded the steps,
Sound collecting means for collecting the operating sound of the passenger conveyor;
Storage means for storing sound data of passenger conveyor operating sound collected by the sound collection means;
An abnormality diagnosis means for diagnosing an abnormality in a passenger conveyor by analyzing the sound data stored in the storage means;
The sound collecting means collects the passenger conveyor operating sound at the timing when the disturbance sound other than the passenger conveyor operating sound is assumed to be below the reference level, and the sound data of the passenger conveyor operating sound is stored in the storage means. A passenger conveyor abnormality diagnosis system comprising: a control means;   The control means has a sound collection time counting timer, starts the sound collection time counting timer when the passenger conveyor is activated, and the sound collection time counting timer finishes counting the set time from the time when the passenger conveyor is activated. 2. The passenger conveyor abnormality diagnosis according to claim 1, wherein the sound collecting means collects passenger conveyor operating sound until the sound collecting means stores sound data of the passenger conveyor operating sound in the storage means. system.   The control means has a sound collection time counting timer and a waiting time counting timer, and starts the waiting time counting timer when the passenger conveyor is activated, and the waiting time counting timer ends counting of the set time. When the sound collection time counting timer is started, the waiting time counting timer ends the set time counting until the sound collecting time counting timer ends the set time counting, 2. The passenger conveyor abnormality diagnosis system according to claim 1, wherein the sound collecting means collects passenger conveyor operating sound and the sound data of the passenger conveyor operating sound is stored in the storage means.   The control means has a sound collection time counting timer, and starts the sound collection time counting timer when a passenger conveyor stop command is input. Until the time counting timer finishes counting the set time, the sound collecting means collects passenger conveyor operating sound and the sound data of the passenger conveyor operating sound is stored in the storage means, and the sound collecting time The abnormality diagnosis system for a passenger conveyor according to claim 1, wherein the operation of the passenger conveyor is stopped after the counting timer finishes counting the set time. The passenger conveyor to be diagnosed is an automatic operation type passenger conveyor that normally performs stop or low-speed standby operation and operates at a normal speed for a predetermined time after detecting the approach of the passenger,
The control means has a sound collection time counting timer, and starts the sound collection time counting timer when the passenger conveyor is stopped or performing low-speed standby operation, and switches the passenger conveyor to operation at a normal speed. Until the sound collection time counting timer finishes counting the set time, the sound collecting means collects passenger conveyor operation sound and switches the passenger conveyor to normal speed operation. The sound data of the operation sound is stored in the storage means, and the operation of the passenger conveyor is stopped or switched to the low-speed standby operation after the sound collection time counting timer finishes counting the set time. The abnormality diagnosis system for the passenger conveyor described. The passenger conveyor to be diagnosed is provided with a voice output device that outputs a guidance voice,
The control means is configured to stop the operation of the sound output device while the sound collecting means collects passenger conveyor operating sound and the sound data of the passenger conveyor operating sound is stored in the storage means. The abnormality diagnosis system for a passenger conveyor according to any one of claims 1 to 5.   7. The display device according to claim 1, further comprising a display unit configured to display that the passenger conveyor operating sound is being collected when the sound collecting unit is collecting the passenger conveyor operating sound. The abnormality diagnosis system for passenger conveyors as described in the paragraph. An abnormality diagnosis system for a passenger conveyor that circulates a number of steps connected endlessly and conveys passengers who have boarded the steps,
Sound collecting means for collecting the operating sound of the passenger conveyor;
Storage means for storing sound data of passenger conveyor operating sound collected by the sound collection means;
An abnormality diagnosis means for diagnosing an abnormality in a passenger conveyor by analyzing the sound data stored in the storage means;
On the storage means storing the sound data, the sound data of the passenger conveyor operation sound collected by the sound collecting means is overwritten and stored in the storage means until the passenger conveyor is started and stopped. And a control means for storing the address of the passenger conveyor.

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