JPH07228443A - Elevator inspection equipment - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] An elevator inspection device that can detect a failure before the failure point of the elevator equipment is significantly damaged, and can significantly reduce the time, labor, and cost required for repair. provide. [Structure] The operation sound signal of the elevator under inspection operation collected by the sound collection microphone 2 and the position data obtained by integrating the output pulse signal of the rotary encoder 12 are stored in the data storage unit 22 in association with each other, and are operated by the determination unit 24. The amplitude of the sound signal is compared with the limit set amplitude value.If it is larger than the limit set amplitude value, it is judged as abnormal sound data, and the frequency, amplitude, decay time of the operating sound signal and the speed and acceleration data of the car and abnormality The data read out from the sound analysis data storage unit 26 is compared, and when they are similar to each other at a certain level or higher, the fault location stored in the abnormal sound analysis data storage unit 26 in association with the data is checked. The center 28 is notified as a proper inspection point.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention checks the operation status of an elevator by inspecting and operating the elevator by inspection operation command or by voluntarily inspecting the operation status of the elevator. The present invention relates to an elevator inspection device for determining whether or not the operation is performed.

[0002]

2. Description of the Related Art When some abnormality occurs in equipment constituting an elevator, a load current increases, a running operation is not smoothly performed, or an abnormal sound is generated. Among them, since the generation of abnormal sound can be relatively sensitively perceived by human hearing, it has been utilized as one of the leading elevator abnormality detection methods. For example, when an elevator user notices an abnormal noise in the elevator during operation, the administrator who recognizes the situation by notifying the administrator notifies the elevator maintenance company that the elevator is making an abnormal noise. To do. The elevator maintenance company that received the contact sent the maintenance staff to the building where the elevator is installed,
Let the inspection work. The maintenance staff who arrived at the site operated the elevator, listened to the abnormal sound that occurred at that time, and visually recognized the loudness and sound quality of the abnormal sound, and also visually checked the load current and operating condition of the equipment that composes the elevator. By summing up those recognitions, the cause and location of the abnormal noise are estimated, the relevant location is inspected to find the faulty location, and repair work is performed. In some cases, an operator of an elevator maintenance company, who has come out for a periodic inspection or the like, happens to hear an abnormal noise from the elevator equipment and recognize the abnormality.

[0003]

As described above, when an elevator user notices an abnormal noise of an elevator during operation and receives an elevator abnormality notification from the elevator user, the damage at the failure point progresses and the deterioration is considerably deteriorated. In many cases, it takes a lot of labor, time, and cost to repair it. In addition, a situation in which an abnormal sound is generated from the elevator facility may cause distrust of a building manager who has an elevator maintenance contract with an elevator maintenance company. Furthermore, since the fault location determination that listens to abnormal sounds from elevator equipment to determine the fault location depends on the sharp hearing of the worker and many years of experience, such repair work requires skilled workers, and standardization of the work is required. It was difficult to educate new employees, and as a result, the work efficiency of such repair work was significantly reduced. The present invention has been made to solve such problems in the prior art, and as passengers of the elevator notice abnormal noise, the failure location of the elevator equipment can be detected before the failure is significantly damaged, and the elevator inspection and The time and labor required for preparation for repair and transportation of equipment etc. can be significantly reduced, and even an inexperienced maintenance staff can easily perform maintenance and inspection of the elevator. It is an object of the present invention to provide an elevator inspection device that can significantly reduce labor and cost.

[0004]

In order to solve the above-mentioned problems, the present invention provides a sound collecting means which is provided in a car and which collects an operating sound in the vicinity of the car and converts it into an electric operating sound signal. Comparing the amplitude of the operating sound signal output by the sound collecting means with a storage means for storing the operating sound signal output by the sound collecting means, and setting the amplitude of the operating sound signal by the setting level. When the level exceeds a level, the operating sound signal is determined to correspond to an abnormal sound, and an abnormal sound determining unit that outputs an abnormal sound signal; and an operating sound signal that the abnormal sound determining unit determines to be an abnormal sound are analyzed. Characteristic extracting means for extracting the characteristics of the operating sound signal, a fault location of a failure that occurred in the past, and an abnormal data storing means for storing a large number of data in which the characteristics of the operating sound signal of the abnormal sound generated at that time are stored. And the operating sound extracted by the feature extraction means Wherein comparing the No. features and operation sound signal of the abnormality data storage means from the read abnormal sound,
When the two are similar to each other at a certain level or higher, the operating sound signal determined by the abnormal sound determining means to be an abnormal sound is associated with the characteristic of the operating sound signal of the abnormal sound read from the abnormal data storage means. It has a failure location determination means for determining that the failure location is the same as the failure location.

Preferably, the vehicle has an operating position measuring means for measuring an operating position of the elevator during inspection operation, and when the abnormal sound judging means judges an abnormal sound, the feature extracting means judges that the abnormal sound judging means makes an abnormal sound. Along with the characteristics of the operating sound signal obtained by analyzing the determined operating sound signal, the characteristics of the operating progress of the elevator during inspection operation obtained by analyzing the time course of the operating position of the elevator measured by the operating position measuring means are obtained. The abnormal data storage means stores the failure locations of many failures that occurred in the past, the characteristics of the operating sound signal of the abnormal sound generated at that time, and the characteristics of the operation progress at that time in association with each other, and the failure location determination means Are characteristics of the operating sound signal extracted by the characteristic extracting means, characteristics of the elevator operation progress during inspection operation, and characteristics of the operating sound signal of the abnormal sound read from the abnormal data storing means. And the characteristics of the operation progress are compared, and when the two are similar to each other at a certain level or more, the operation sound signal determined by the abnormal sound determination means to be an abnormal sound is the operation sound of the abnormal sound read from the abnormal data storage means. It is determined that it is caused by a failure at the same failure location as the failure location associated with the characteristics of the signal and the characteristics of the operation progress at that time.

[0006]

[Operation] When the elevator is inspected and operated, the sound collecting means collects the operation sound in the vicinity of the car generated by the inspection operation and converts it into an electric operation sound signal. The storage means stores the operating sound signal output by the sound collecting means. The abnormal sound determination means compares the amplitude of the operating sound signal output by the sound collecting means with a preset setting level, and when the amplitude of the operating sound signal exceeds the set level, the operating sound signal corresponds to the abnormal sound. It is determined that the abnormal sound signal is output. In the latter method, the operation position measuring means measures the operation position of the elevator during inspection operation. When the abnormal sound determination means determines that it is an abnormal sound, the feature extraction means analyzes the operating sound signal determined by the abnormal sound determination means to be an abnormal sound and extracts the characteristic of the operating sound signal.
The failure point determination means compares the characteristics of the operation sound signal extracted by the characteristic extraction means with the characteristics of the operation sound signal of the abnormal sound read from the abnormal data storage means, and both are equal to or higher than a certain level.
When they are similar, the operating sound signal determined by the abnormal sound determining means to be an abnormal sound is due to a failure at the same failure location as the failure location associated with the characteristics of the operating sound signal of the abnormal sound read from the abnormal data storage means. It is determined that it has occurred. In the latter means, when the abnormal sound determination means determines that the sound is abnormal,
The feature extraction means obtains by analyzing the time course of the operating position of the elevator measured by the operating position measuring means, together with the characteristics of the operating sound signal obtained by analyzing the operating sound signal determined by the abnormal sound determining means to be an abnormal sound. Features of the operation progress of the elevator during inspection operation are extracted. The failure point determination means has the characteristics of the operation sound signal extracted by the characteristic extraction means and the characteristics of the operation history of the elevator during inspection operation, and the characteristics of the operation sound signal of the abnormal sound read from the abnormality data storage means and the characteristics of the operation history. In comparison, when the two are similar to each other at a certain level or more, the operating sound signal determined by the abnormal sound determining means as the abnormal sound is the characteristic of the operating sound signal of the abnormal sound read from the abnormal data storing means, and the operation at that time. It is determined that the failure occurred at the same failure location as the failure location associated with the characteristics of the progress.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a configuration diagram showing a schematic configuration of the embodiment. In FIG. 1, 1 is a car, 2 is a sound collecting microphone provided in the car 1 as a sound collecting means, 3 is a guide shoe attached to each of four positions above and below the car 1, and 4 is a car. A relay terminal for a communication cable, which will be described later, provided at the bottom of the car 1, 5 is a communication cable for transmitting detection signals, control signals, etc., 6 is a guide rail installed in an elevator hoistway, and 7 is an elevator for the communication cable 5. A relay terminal on the hoistway side, 8 is a counterweight for reducing the maximum load of the hoisting motor, which will be described later, 9 is a guide shoe attached to each of the upper and lower parts of the counterweight 8, and 10 is the counterweight 8. Guide rails for guiding 11 are hoisting motors for hoisting the car 1 12
Is a rotary encoder which is attached to the rotary shaft of the hoisting motor 11 and constitutes a moving position measuring means. 13 is a hoisting pulley connected to the rotary shaft of the hoisting motor 11.
4 is a separation pulley for keeping a predetermined distance between the car 1 and the counterweight 8, 15 is wound around the hoisting pulley 13 and the separation pulley 14, and both ends are connected to the car 1 and the counterweight 8. It is the main rope. The reference numerals described below indicate the configuration of the electrical equipment section, 21 is an operation control section that controls the normal operation of the elevator and also automatically controls the inspection operation, and 22 is a data storage section that stores various detection data. Reference numeral 23 is a data analysis unit that analyzes the detected data and performs a predetermined calculation, 24 is a determination unit that determines a failure location based on the result analyzed by the data analysis unit 23, and 25 is a center and a telephone line described later. A communication device communicating via the communication device 26, an abnormal sound analysis data storage unit 26 that stores abnormal sound when a failure occurs in the past and data that analyzes the operation progress of the car 1, and 27 detects the occurrence of the abnormal sound. The abnormal sound generation data storage unit 28 stores the abnormal sound generation data, and 28 is a center that constantly monitors the elevator by communicating with the communication device 25 at a remote location. The data storage unit 22 to the abnormal sound generation data storage unit 27 constitute the elevator terminal monitoring device 20.

When the hoisting motor 11 is rotationally energized by a control signal from the operation control section 21, the rotary encoder 12 mounted on the rotary shaft of the hoisting motor 11 has a frequency proportional to the number of revolutions of the hoisting motor 11. The pulse signal of is output. The pulse signal is input to the operation control unit 21 and gives position information and speed information of the car 1 as described later. When the car 1 travels, the guide shoes 3 attached to the car 1 slide along the guide rails 6 to suppress horizontal swinging of the car 1, thus ensuring stable running of the car 1. Reserved. Similarly, the guide shoe 9 and the guide rail 10 are provided for the stable running of the counterweight 8. The sound collecting microphone 2 converts the operating sound collected in the car 1 into an electric signal, and the converted electric signal is amplified, and then the relay terminal 4 and the communication cable 5
And via the relay terminal 7 to the data storage unit 22 arranged in the elevator machine room (not shown).
In the data storage unit 22, the operation sound signal sent from the sound collection microphone 2 and the position data of the car 1 obtained by calculating the pulse signal output from the rotary encoder 12 by the operation control unit 21 are associated with each other. Will be remembered. Actually, the position data of the car 1 is the integrated value of the pulse signal output from the rotary encoder 12. Although the sound collecting microphone 2 is provided independently in this embodiment, it can also be used as a transmitter of an iterhorn for emergency communication, which is usually installed in the car 1.

The operating sound signal and the position data of the car 1 read from the data storage unit 22 are sent to the data analyzing unit 23, where the frequency, amplitude, decay time, etc. of the operating sound signal are calculated, The velocity and acceleration of the car 1 are calculated by calculating the primary and secondary time derivatives of the position data. Each data of the result analyzed by the data analysis unit 23 is sent to the determination unit 24. The amplitude data of the operating sound signal is compared with the limit setting amplitude value read from the abnormal sound analysis data storage unit 26, and when it is determined that the amplitude is larger than the limit setting amplitude value, the operating sound collected by the sound collecting microphone 2 is an abnormal sound. To be judged.

In addition to the operating sound signal in which the operating sound is determined to be an abnormal sound, each data such as the operating position of the car 1, the frequency of the abnormal sound, and the decay time is further stored in the abnormal sound analysis data storage unit 2.
6 is compared with the corresponding data read out from No. 6, and the fault location producing the abnormal sound is determined by their similarity determination. The data representing the failure point determined by the determination section 24 is sent to the abnormal sound generation data storage section 27 for storage and is also sent to the communication device 25, and is transmitted from the communication device 25 as abnormal point detection information via a telephone line. Sent to the center 28. Upon receipt of the abnormal point detection information, the monitoring staff resident in the center 28 informs, by telephone, etc., that an abnormal sounding noise has been found at the elevator maintenance office of the building in which the elevator is installed. To do. The center 28 not only receives the abnormal point detection information from the terminal monitoring device 20 of the building where the elevator is installed, but also actively communicates from the center 28 to the communication device 2.
It is also possible to call 5 to issue an inspection operation command for the elevator and collect the inspection operation result data.

2 and 3 are flowcharts of the abnormal sound determination process. The operation of the embodiment will be described with reference to these drawings. In the present embodiment, the operation control unit 2 is configured so that the inspection operation command is issued once a day, for example, between 3:00 am and 4:00 am during a time when the elevator is not used.
The operation control information is set to 1. As described above, the communication device 25 may be called from the center 28 to issue an inspection operation command for the elevator to cause the operation control unit 21 to perform inspection operation control. First, in step S1, it is determined whether or not a check operation command is issued, and if the result is Yes, the check operation mode to be executed is selected from the already set check operation modes (S2). The inspection operation mode includes, for example, a first-floor rising operation from the first floor to the second floor, a second-floor rising operation from the first floor to the third floor, a top-floor direct rising operation from the first floor to the top floor,
There is a first floor descent operation from the top floor, a second floor descent operation from the top floor, a first floor direct descent operation from the top floor to the first floor, and a similar check operation mode from an intermediate floor. Of these inspection operation modes, preset inspection operation modes are sequentially selected. In step S3, the car 1 is moved to the inspection operation start floor according to the selected inspection operation mode. When the car 1 has finished moving to the inspection operation start floor, the inspection operation is started (S4). Then, the sound collecting microphone 2 starts to collect the working sound generated in the car 1, converts it into an electric signal, and sends the obtained working sound signals to the data storage unit 22 one after another for storage. In parallel with the storage of this operating sound signal, the rotary encoder 12
The operation control unit 21 calculates the pulse signal output from. The position data of the car 1 thus calculated is stored in association with the previous operation sound signal (S5). In step S6, it is determined whether or not all inspection operations have ended. If the determination result is No, the above-described inspection operation and the process of storing the data obtained by the inspection operation in the data storage unit 22 are repeated. Then, the determination result of step S6 is Y
When it becomes es, the process of storing the operation sound signal and the position data in the data storage unit 22 is finished (S7).

Next, referring to FIG. 3, in step S8,
The determination unit 24 reads the data of the operation sound signal stored in the data storage unit 22, compares the amplitude with the limit set amplitude value read from the abnormal sound analysis data storage unit 26, and operates with an amplitude larger than the limit set amplitude value. It is determined whether there is sound signal data. If the result is Yes, the data of the working sound signal is determined to be abnormal sound data, and the frequency, amplitude, and decay time of the working sound signal as a result of the analysis of the abnormal sound data by the data analysis unit 23. Data of
The data of the position, speed and acceleration of the car 1 under inspection operation when an abnormal sound is emitted is taken in (S9). In the next step S10, these acquired data and
The relevant data read from the abnormal sound analysis data storage unit 26 is compared, and a comprehensively similar data set is searched. The abnormal sound analysis data storage unit 26 stores the frequency, amplitude, and decay time data of abnormal sounds that have occurred in the past during failures, and the position, speed, and acceleration of the car 1 during inspection operation when the abnormal sound is emitted. The data set and the data of the failure point causing the abnormal sound are stored in association with each other, and the two sets of data compared in step S10 have a certain level or more,
When the two are similar, it is determined that the failure location associated with the data set read from the abnormal sound analysis data storage unit 26 is the inspection location to be inspected, and the data at the inspection location is stored as the abnormal sound generation data. It is stored in the unit 27. In step S11, the data of the operation sound signal read from the data storage unit 22 is updated to check whether or not an abnormal sound is generated outside in the operation mode. Next, it is judged whether or not all comparison judgments with the limit set amplitude value of the operation sound signal read from the data storage unit 22 are completed (S1).
2) If the determination result is No, return to step S8,
The process of comparing the new operating sound signal with the limit set amplitude value and the process when the operating sound signal is determined to be an abnormal sound are repeated. If the result of the determination in step S12 is Yes, it is determined whether or not the comparison determination with the limit set amplitude value of the operating sound signal in all the set operation modes has been completed (S13). Since at least two inspection operation modes set in the abnormal sound determination processing are selected and set in order to improve the accuracy of the determination processing, if the determination result in step S13 is No, the process returns to step S2 and is executed next. The inspection operation mode to be performed is selected, and the processing from step S3 is repeated. If the determination result in step S13 is Yes, that is, if the inspection operation in all the inspection operation modes is completed, it is determined whether or not there is an inspection required inspection location stored in the abnormal sound generation data storage unit 27. Do (S
14). If the result is Yes, the information of the inspection required inspection point is transmitted from the communication device 25 to the center 28 via the telephone line as the abnormal point detection information (S15). When the notification of the abnormal portion detection information to the center 28 is completed, or if the result of the determination in step S14 is No, the operation of the abnormal sound determination process is terminated. When the center 28 receives the abnormal point detection information from the terminal monitoring device 20, the monitoring person finds, through a telephone call or the like, a faulty point generating an abnormal sound in the elevator at the elevator maintenance office of the building in which the elevator is installed. I will contact you. Therefore, the maintenance staff at the elevator maintenance office goes to the building where the elevator is installed to inspect and repair the elevator.

FIGS. 4 and 5 show data (a) of the operating sound signal stored in the data storage unit 22 in the abnormal sound determination process, a pulse signal (b) output from the rotary encoder 12, and a data analysis unit 23. The speed (c) of the car 1 obtained by analyzing the pulse signal (b) at
It is a wave form diagram which shows the example of the data of acceleration (d). All of them are the measurement data when the inspection operation mode of the first floor to the fourth floor, which is the ascending operation of the highest floor, is selected. Examples of the data shown in FIGS. 4 and 5 are a state in which a step is formed at a rail joint between the third and fourth floors of the guide rail 6, and a rail between the second and third floors of the guide rail 6, respectively. It shows the measurement data in a state where a large sliding friction is generated between the guide shoe 3 and the guide rail 6 due to the oil shortage. As described above, in the present embodiment, when an abnormal sound is generated from the elevator equipment, the terminal monitoring device 20 automatically determines the cause of the abnormal sound during the daily inspection operation, specifies the inspection point, and identifies the center. Since I will report to 28, the maintenance staff of the elevator maintenance office, which is contacted by the center 28, should bring only the equipment and instruments necessary for inspection and repair of the relevant part, and prepare for the inspection and repair of the elevator. The time and labor required for transporting the device and the like can be significantly reduced, and even a maintenance staff with little experience can easily perform maintenance inspection of the elevator. Also,
By properly setting the limit set amplitude value, the failure can be found and repaired before it is significantly damaged, so the time, labor, and cost required for the repair can be significantly reduced, and the passengers of the elevator can be significantly reduced. Since it is possible to detect an abnormality in the elevator equipment before the abnormal noise is noticed, it is possible to eliminate the fear of creating distrust of the elevator maintenance company due to the generation of the abnormal noise from the elevator equipment. In this embodiment, the frequency, amplitude, and decay time of the operating sound signal analyzed and output by the data analysis unit 23, and the position, speed, and acceleration of the car 1 during the inspection operation when the abnormal sound is emitted. Although the determination unit 24 compares and determines the data of No. 1 and the corresponding data collected in the past read from the abnormal sound analysis data storage unit 26, the present invention is not limited to this. By comparing only the frequency, amplitude, and decay time of the signal with the corresponding data at the time of failure that occurred in the past, the inspection point to be inspected can be determined to a large extent.

[0014]

As described above, according to the first aspect of the present invention, the operating sound signal provided in the car and collecting the operating sound in the vicinity of the car and converting it into an electrical operating sound signal The amplitude is compared with the preset level, and when the amplitude of the working sound signal exceeds the set level, it is determined that the working sound signal corresponds to the abnormal sound, and the working sound signal that is determined to be the abnormal sound is analyzed. Then, the characteristics of the operating sound signal are extracted and read out from the abnormal data storage means that stores a large number of data in which the failure location of a failure that occurred in the past and the characteristic of the operating sound signal of the abnormal sound generated at that time are associated with each other. The characteristics of the operating sound signal of the abnormal sound are compared, and when both are more than a certain level and similar, it is judged as an abnormal sound, and the operating sound signal is the operating sound signal of the abnormal sound read from the abnormal data storage means. Same as the fault location associated with the feature Since it is determined that the noise is generated due to the failure of the failure point, the operating noise above a certain level is judged to be an abnormal sound, and the failure point that caused it is identified, so that the passengers of the elevator make an abnormal noise. You can detect abnormalities in the elevator equipment before you notice it, and you can eliminate the risk of creating distrust for the elevator maintenance company due to abnormal noise from the elevator equipment, and discover the failure before the failure point is significantly damaged. Can be repaired.
Furthermore, the time and labor required to prepare for the inspection and repair of the elevator and to transport the equipment etc. can be significantly reduced, and even an inexperienced maintenance staff can easily perform the maintenance and inspection of the elevator. The time, labor, and cost required for can be significantly reduced. According to the invention of claim 2, the operating position of the elevator during inspection operation is measured, the operating sound near the car is collected and converted into an electrical operating signal, and the operating sound signal is determined as an abnormal sound. Then, the characteristics of the operating sound signal that was determined to be an abnormal sound were analyzed, and the characteristics of the operating sound of the elevator that were already inspected were analyzed by extracting the characteristics of the operating sound of the elevator that were already measured. The characteristics of the extracted operation sound signal and the characteristics of the operation history of the elevator during inspection operation are compared with the characteristics of the operation sound signal of the abnormal sound read from the abnormality data storage means and the characteristics of the operation history, and both are at a certain level. As described above, when they are similar to each other, the operating sound signal determined to be an abnormal sound is associated with the characteristics of the operating sound signal of the abnormal sound read from the abnormal data storage means and the failure number associated with the characteristics of the operation progress at that time. Since it is determined that it is caused by a failure at the same failure point, the failure point is determined by using the characteristics of the operating sound signal as well as the characteristics of the elevator operation progress, so even in a noisy environment. The failure location can be accurately determined. According to the invention as set forth in claim 3, since there is a communication means for transmitting information regarding a failure location of the elevator determined to be a failure to a central monitoring device for monitoring the elevator at a remote location via a communication line, the vehicle goes to the site. Without this, the central monitoring device side can know that the elevator is making an abnormal sound and that there is a failure point determined to be a failure.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a flowchart of abnormal sound determination processing.

FIG. 3 is a flowchart of abnormal sound determination processing subsequent to FIG.

[Fig. 4] Waveform diagram of operation sound signal, output pulse signal of rotary encoder, speed and acceleration of car

FIG. 5 is a waveform diagram of an operating sound signal, an output pulse signal of a rotary encoder, a speed and acceleration of a car according to another example.

[Explanation of symbols]

 1 Cradle 2 Sound collection microphone 5 Communication cable 6, 10 Guide rail 8 Counterweight 8 Hoisting motor 12 Rotary encoder 20 Terminal monitoring device 21 Operation control unit 22 Data storage unit 23 Data analysis unit 24 Judgment unit 25 Communication device 26 Abnormal noise Analysis data storage unit 27 Abnormal sound generation data storage unit 28 Center

Claims (3)

[Claims] 1. An elevator inspection device for determining whether or not an elevator is operating normally by inspecting and instructing the elevator to operate by inspecting operation command or voluntarily inspecting the elevator The sound collecting means is provided, which collects the operating sound in the vicinity of the car and converts it into an electrical operating sound signal, a storage means for storing the operating sound signal output by the sound collecting means, and the sound collecting means. The amplitude of the output operating sound signal is compared with a preset setting level, and when the amplitude of the operating sound signal exceeds the set level, the operating sound signal is determined to correspond to an abnormal sound and an abnormal sound is generated. Abnormal sound determination means for outputting a signal, feature extraction means for analyzing the operating sound signal determined by the abnormal sound determination means to be an abnormal sound and extracting the characteristics of the operating sound signal, and a failure location of a failure that occurred in the past When, Abnormal data storage means for storing a large number of data in which the characteristics of the operating sound signal of the abnormal sound generated at that time are stored, the characteristics of the operating sound signal extracted by the characteristic extracting means, and the abnormal sound read from the abnormal data storage means. The characteristics of the operating sound signals are compared, and when the two are similar to each other at a certain level or more, the operating sound signal determined by the abnormal sound determining means as an abnormal sound is the operation of the abnormal sound read from the abnormal data storing means. An elevator inspection device having a failure point determination means for determining that the failure point is the same as the failure point associated with the characteristic of the sound signal. 2. An operating position measuring means for measuring the operating position of an elevator during inspection operation, and when the abnormal sound judging means judges an abnormal sound, the feature extracting means judges the abnormal sound judging means as an abnormal sound. Along with the characteristics of the operating sound signal obtained by analyzing the operating sound signal, the time course of the operating position of the elevator measured by the operating position measuring means is analyzed, and the characteristic of the operating progress of the elevator during inspection operation is extracted, The abnormal data storage means stores a large number of data in which the failure location of a failure that occurred in the past, the characteristics of the operating sound signal of the abnormal sound generated at that time, and the characteristics of the operation progress at that time are associated, and the failure location determination means is The characteristics of the operating sound signal extracted by the characteristic extracting means, the characteristics of the operation progress of the elevator during inspection operation, the characteristics of the operating sound signal of the abnormal sound read from the abnormal data storage means, and The characteristics of the operation history are compared, and when the two are similar to each other at a certain level or more, the operation sound signal determined by the abnormal sound determination means to be the abnormal sound is the operation sound signal of the abnormal sound read from the abnormal data storage means. Features of, and
The elevator inspection device according to claim 1, wherein the inspection device is determined to be generated due to a failure at the same failure location as the failure location associated with the characteristic of the operation progress at that time. 3. A communication means for transmitting, via a communication line, a central monitoring device for monitoring the elevator at a remote location, the information relating to the elevator failure location determined by the failure location determination means. The elevator inspection device according to claim 1 or claim 2.