JP2008201537A - Self-power generation type inspection device and method, and escalator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-power generation type inspection device capable of detecting an abnormality of a roller provided in a footstep or a guide rail by a simple constitution and suppressing vibration and noise, an inspection method, and an escalator system. <P>SOLUTION: This self-power generation type inspection device is provided with a power feeding and signal generating part 130 for generating power by non-contact with the roller 120c and a diagnostic processing part 140 for diagnosing the escalator based on an AC voltage waveform signal transmitted by the power feeding and signal generating part 130. As a result, the abnormality of the roller provided in the footstep or the guide rail can be detected by a simpler constitution as compared with a conventional constitution. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a self-power generation type inspection apparatus and inspection method used for a conveyor such as an escalator to inspect and diagnose the conveyor, and an escalator system.

  In passenger conveyors such as escalators and auto lines, steps or tread plates connected endlessly travel on a guide rail attached to a casing frame of the passenger conveyor to convey passengers. In the case of an escalator, as shown in FIG. 11, a total of four rollers 2a, 2b, 3a, 3b traveling on the guide rail are attached to each step 1 in the front-rear and left-right directions in the traveling direction. ing. These four rollers 2a, 2b, 3a, 3b travel on a total of four guide rails 4a, 4b, 5a, 5b, two pairs on the left and right.

  Therefore, for example, when a constriction occurs in the mounting dimensions of the guide rails 4a, 4b, 5a, and 5b, there arises a problem that vibrations and noise are generated, and the step 1 in the course of running fluctuates. For example, when the mutual height dimension between the four rails 4a, 4b, 5a, and 5b comes, the step 1 is staggered. In addition, if a step or a gap is generated at the rail joint, vibration and noise may occur. These dimensions may cause interference between the skirt guards provided on the left and right sides of the step traveling path and the comb plate provided on the boarding / alighting section and the steps. Therefore, it is necessary to periodically check whether the mounting dimensions of the guide rail have changed over time due to aging deterioration or unexpected external force.

  In order to determine the state of the escalator as described above, a device that is attached to a step and checks the state of the escalator has already been proposed (for example, Patent Document 1). On the other hand, since the steps travel around the escalator casing, it is difficult to supply power to the inspection device via a fixed object such as a wire. Therefore, the inspection device is configured to operate with self-generated power. That is, the inspection device has a power generation unit, a charge / discharge unit, a sensor unit, a signal processing circuit, and the like. As shown in FIG. 11, the side member forming the step 1 has a wheel in contact with the roller 3a. A generator 6 having a shaft 7 provided at the shaft end is attached. Therefore, when the step 1 travels, the roller 3a rotates, the wheel 7 in contact with the roller 3a rolls, and the generator 6 generates power. The generated electric power is supplied to the charging / discharging unit, sensor unit, signal processing circuit and the like provided in the inspection device, and the inspection device is operated.

JP 2006-76729 A

  As described above, in the conventional inspection device, in addition to the components necessary for the inspection of the escalator such as the sensor unit and the signal processing circuit, a power generation unit for supplying power to the sensor unit and the signal processing circuit is additionally provided. It was. Therefore, there has been a problem that the configuration as an inspection device becomes large.

Furthermore, as described above, the wheel 7 of the generator 6 that supplies electric power to the inspection device is in contact with the roller 3a of the step 1, and contact friction occurs between the wheel 7 and the roller 3a. Therefore, there is a problem that large vibration and noise are generated. For this reason, when an acceleration sensor is used as a sensor unit for detecting the state of an escalator provided in the inspection device, or when making a diagnosis using sound, an inspection device is always installed to perform abnormality diagnosis even when using a passenger. In some cases, it was necessary to suppress vibration and noise.
In addition, in order to detect the abnormality of the rollers in the steps and the above guide rails with higher accuracy, even if a new sensor is added, an inexpensive and efficient sensor must be used in order to realize the inspection device at a low cost. It was necessary to realize.

  The present invention has been made in order to solve the above-described problems, and can detect abnormalities in rollers and guide rails provided in the steps, and can suppress vibrations and noises, with a simpler configuration than conventional ones. It is an object of the present invention to provide a self-powered inspection device, an inspection method executed by the self-powered inspection device, and an escalator system including the self-powered inspection device.

In order to achieve the above object, the present invention is configured as follows.
That is, the self-power generation type inspection device according to the first aspect of the present invention is a self-power generation type inspection device that inspects the state of a conveyor having a plurality of steps connected endlessly and a guide rail that guides the movement of the steps. A device, wherein the steps are
A roller that contacts the guide rail and rotates on the guide rail and is rotatably attached to the step, and magnets having different polarities arranged alternately along the circumferential direction;
A power supply and signal generation unit that is disposed in a non-contact manner and fixed to the step so as to face the roller, generates an AC voltage according to the rotation of the roller due to the movement of the step, and sends an AC voltage waveform signal;
The AC voltage and the AC voltage waveform signal are supplied, a diagnostic processing unit that analyzes the AC voltage waveform signal and inspects the conveyor;
It is provided with.

According to the self-power generation type inspection device of the first aspect of the present invention, the power supply and signal generation unit that generates power in a non-contact manner on the roller is provided, and further, based on the AC voltage waveform signal sent by the power supply and signal generation unit. By providing a diagnosis processing unit for diagnosing the conveyor, it is possible to inspect rollers and guide rails provided in the steps and detect an abnormality with a simpler configuration than in the past. Further, since the power feeding and signal generating unit is not in contact with the roller, generation of vibration and noise can be suppressed. Therefore, in the case of an escalator, since it does not affect the ride comfort of passengers, diagnosis during driving is possible, and the escalator can be constantly monitored. Further, the AC voltage waveform signal generated from the power feeding and signal generation unit reflects the rotation state of the roller, so that it becomes a new sensor for monitoring the state of the escalator.
In addition, a new sensor that efficiently senses the state of the roller and rail can be obtained at low cost by treating the voltage waveform obtained when generating electric power from the rotational movement of the roller as a signal.

A self-power generation type inspection apparatus, a conveyor inspection method executed by the self power generation type inspection apparatus, and an escalator system including the self power generation type inspection apparatus, which are embodiments of the present invention, are described below with reference to the drawings. Explained. In each figure, the same or similar components are denoted by the same reference numerals.
Further, in the embodiment described below, an escalator system provided with the above self-power generation type inspection device is taken as an example, but the present invention is not limited to this, and is also applied to a conveyor in which a plurality of steps are connected endlessly. Is possible.

Embodiment 1 FIG.
First, with reference to FIG. 10, an escalator system 200 in which a plurality of steps 201 including an at least one step having the self-powered inspection device is connected endlessly to form a loop 202 will be described. In the escalator system 200, the number of steps 101 having a self-power generation type inspection device is one. In addition, the escalator system 200 includes a receiving device 221 that communicates with the step 101 and, if necessary, a remote management device 222. The receiving device 221 and the remote management device 222 are included in the monitoring device 220.

  An upper terminal gear 203 is provided at the uppermost portion of the loop 202 located at the right end of FIG. 10, and a lower terminal gear 204 is provided at the lowermost portion located at the left end, and the upper terminal gear 203 and the lower terminal gear 204 are arranged. The loop 202 is engaged. The upper terminal gear 203 is provided with a driving device 205, and the upper terminal gear 203 is driven by the driving device 205, so that the loop 202 is driven around. Note that the step 201, the upper terminal gear 203, the lower terminal gear 204, the driving device 205, and the like are stored in a housing frame 206.

Each step 201 has a fan-shaped side portion, front rollers 2a and 2b are attached in the vicinity of the main part of the fan, and on the corner of the arc of the fan on the opposite side to the mounting surface side of the step 201. The rear rollers 3a and 3b are attached. The front rollers 2a and 2b and the rear rollers 3a and 3b are provided in pairs on the left and right and front and rear in the traveling direction of the step 201.
Inside the housing frame 206, front roller guide rails 207 a and 207 b (collectively “207” are numbered on the mounting portion side) so that the front rollers 2 a and 2 b can travel on the inside. (Hereinafter also referred to as the front rail), the rear roller guide rails 208a and 208b (collectively "208" are numbered on the mounting portion side) so that the rear rollers 3a and 3b can travel on them. (Hereinafter also referred to as rear rails) are arranged with their left and right width direction positions changed. Similarly, a guide rail 209 on which the front rollers 2a and 2b travel and a guide rail 210 on which the rear rollers 3a and 3b travel are arranged on the side opposite to the mounting portion. Further, the front roller guide rail 207 and the rear roller guide rail 208 are arranged so that the mounting surface of each step 201 including the step 101 is always kept horizontal when the passengers board.

  In the escalator system 200 configured as described above, each step 201 including the step 101 operates as follows. That is, the front rollers 2a and 2b and the rear rollers 3a and 3b of the step 201 on which the passenger is mounted travels on the front roller guide rail 207 and the rear roller guide rail 208 and reaches the upper terminal gear 203 portion. The step 201 that has reached the terminal gear 203 reverses along the terminal gear 203. The front rollers 2a and 2b and the rear rollers 3a and 3b of the reversed step 201 travel on the guide rails 209 and 210 on the opposite mounting portion side and are driven to the lower terminal gear 204 portion. The step 201 is reversed again at the lower terminal gear 204 portion, and is ready to transport passengers.

Next, the step 101 having the self-power generation type inspection device will be described.
As shown in FIG. 1, in the same manner as the above-described step 201, the step 101 also has an upper surface member 101c that forms a passenger mounting surface, a rear surface member 101d that is formed in a curved surface, and a pair of side surface members 101e that form both left and right side surfaces. , 101f and a shaft 101g attached to the front lower part of the side members 101e, 101f. The upper surface member 101c, the rear surface member 101d, and the side surface members 101e and 101f may be partly or entirely formed integrally, or may be separate members. Front rollers 120a and 120b are rotatably attached to both ends of the shaft 101g corresponding to the above-described front rollers 2a and 2b. Rear rollers 120c and 120d are rotatably attached to the lower rear portions of the side members 101e and 101f corresponding to the above-described rear rollers 3a and 3b.

  The self-powered inspection device 110 provided on the step 101 having such a shape basically includes the front rollers 120a and 120b, the rear rollers 120c and 120d, the power supply and signal generation unit 130, and diagnostic processing. It is preferable to include a transmission unit 150 and a charging / discharging unit 160.

  The front rollers 120a and 120b and the rear rollers 120c and 120d all have the same configuration, and the description will be given by taking the rear roller 120c as an example in FIG. 2 and the following description. The rear roller 120c is attached to the shaft 101h so as to be rotatable about a shaft 101h provided upright on the side member 101e. A circular recess 121 is preferably formed on the inner surface of the rear roller 120c facing the side member 101e, and a ring-shaped disk 122 made of a magnetic material is attached to the bottom of the recess 121. Yes. As shown in FIG. 4, a plurality of permanent magnets 123 are arranged on the disc 122 at regular intervals along the circumference around the shaft 101 h. Each magnet 123 has the same shape, but the adjacent magnets 123 have different polarities. Thus, the leakage of magnetic flux can be reduced by connecting the back surface of the magnet 123 with the magnetic disk 122.

  In the present embodiment, the magnets 123 are provided as described above for the four rollers 120a to 120d provided in the step 101. As will be described later, this is based on the AC voltage waveform signal obtained according to the rotation of each of the rollers 120a to 120d, the state of each of the rollers 120a to 120d, the front roller guide rail 207, and the rear roller guide rail. Since 208 and the state of the guide rails 209 and 210 are inspected and diagnosed, it is preferable in that all of the escalator system 200 can be inspected and diagnosed. However, the present invention is not limited to this configuration, and the magnet 123 may be provided on at least one of the four rollers 120a to 120d as described above.

As shown in FIGS. 2 and 5, the power supply and signal generation unit 130 includes a disk 131, a coil unit 132, and a support member 133, and each of the front rollers 120 a and 120 b and the rear rollers 120 c and 120 d. Four are provided corresponding to Each power feeding and signal generating unit 130 is opposed to the magnet 123 provided on each of the front rollers 120a and 120b and the rear rollers 120c and 120d, and the coil unit 132 is disposed in a non-contact manner so that the shaft 101g Are installed on both side portions 101a and 101f. In the following description, the power supply and signal generation unit 130 disposed to face the rear roller 120c will be described as an example.
The disc 131 is a ring-shaped plate made of a magnetic material, and has a slight gap with respect to the side member 101e with the shaft 101h as the center and parallel to the disc 122 provided on the rear roller 120c. It is fixed to the side member 101e via the support member 133. The support member 133 is made of, for example, a non-magnetic material such as stainless steel, and is fixed to the side member 101e with the shaft 101h as the center. The disk 131 includes a plurality of coil portions that are opposed to the magnet 123 and are in non-contact with each other at the same interval as the arrangement interval of the magnets 123 along the circumferential direction around the shaft 101h. 132 is erected. Each coil part 132 has the same shape. The coil portion 132 and the magnet 123 of the rear roller 120c are installed along a circle having the same radius centered on the shaft 101h. The coil portion 132 includes a core 132a that is erected on the disc 131 and is made of a magnetic material, and a conductor 132b that is wound around the outer surface of the core 132a. Leakage of magnetic flux can also be reduced by connecting the core 132a on the side opposite to the magnet 123. In the present embodiment, as shown in the drawing, the core 132a has a rectangular cross section, but may have a circular cross section. Moreover, the coil part 132 may be one.

In the rear roller 120c and the power feeding / signal generating unit 130 configured as described above, the rear roller 120c rotates by driving the step 101 as described above, that is, the magnet 123 rotates. Accordingly, an alternating magnetic field whose polarity changes alternately acts on each coil part 132 of the power feeding and signal generating part 130. In addition, since the conductor 132b is wound around the core 132a so as to be perpendicular to the magnetic field, each coil portion 132 generates an alternating voltage, and in accordance with the rotation state of the rear roller 120c, as shown in FIG. An AC voltage waveform signal 170 as shown is sent out. Further, as described above, by setting the installation interval of each coil part 132 equal to the installation interval of the magnet 123 in the rear roller 120c, the phase difference of the AC voltage waveform generated in the coil part 132 becomes 0 ° or 180 °. When the coil parts 132 are connected in series or in parallel, power can be effectively taken out.
As described above, the power supply and signal generator 130 provided corresponding to each of the front rollers 120a and 120b and the rear rollers 120c and 120d generates an AC voltage as the rollers 120a to 120d rotate and generates an AC. A voltage waveform signal 170 is transmitted.

  The diagnosis processing unit 140 is installed in the step 101 and connected to the power supply and signal generation unit 130. Therefore, the diagnosis processing unit 140 is supplied with the AC voltage and the AC voltage waveform signal 170 from the respective power supply and signal generation unit 130, and the diagnosis processing unit 140, as will be described in detail later, each AC voltage waveform signal 170. The escalator system 200 is inspected and diagnosed.

  The diagnosis processing unit 140 is constituted by, for example, a semiconductor device, and as shown in FIG. 3, a CPU (Central Processing Unit) 141, a processing unit 142 that executes the above analysis, inspection, and diagnosis, and the above analysis, inspection, and diagnosis. A storage unit 143 is provided for storing a program for execution and results of analysis, inspection, and diagnosis. In addition, when the processing unit 142 is divided into portions that function by the analysis, inspection, and diagnosis execution programs, the processing unit 142 is divided into a rotational speed and phase detection unit 1421, a reverse detection unit 1422, a position calculation unit 1423, and an integration unit 1424. can do.

The rotation speed and phase detection unit 1421 obtains the rotation speed and rotation phase of each of the rollers 120a to 120d from each AC voltage waveform signal 170.
The inversion detection unit 1422 detects that the rotation of each of the rollers 120a to 120d has changed from each AC voltage waveform signal 170. That is, as described above and as can be seen from FIG. 10, when the step 101 moves to the terminal gear 203 portion and the lower terminal gear 204 portion, the posture of the step 101 is reversed as in the case of the step 201. The rotation directions of the rollers 120a to 120d are reversed. Therefore, each AC voltage waveform signal 170 sent from each power supply and signal generator 130 also changes from the previous signal. The inversion detection unit 1422 detects this change.
The position calculation unit 1423 is based on the rotation speed and the number of rotations of each of the rollers 120a to 120d by the phase detection unit 1421 based on the reversing unit determined based on the “reversing” detected by the reversal detection unit 1422. The current positions of the rollers 120a to 120d are obtained.
The accumulating unit 1424 accumulates the rotation speed and rotation phase of each of the rollers 120a to 120d by the rotation speed and phase detection unit 1421 with the reversing unit as a reference.

The transmission unit 150 is installed in the step 101 and connected to the diagnosis processing unit 140. In the present embodiment, the inspection and diagnosis results executed by the diagnosis processing unit 140 are supplied from the diagnosis processing unit 140 to the transmission unit 150, and the transmission unit 150 transmits the inspection and diagnosis result information to the escalator. The data is transmitted to the receiving device 221 included in the system 200.
By providing the transmission unit 150, the inspection and diagnosis result information is automatically transmitted. Therefore, the escalator can be easily inspected and diagnosed at an appropriate timing.
For example, when the operator reads the inspection / diagnosis result information stored in the storage unit 143 provided in the diagnosis processing unit 140 at the time of periodic inspection of the escalator system 200, for example. In addition, a configuration in which the transmission unit 150 and the reception device 221 are not provided may be employed.

The charging / discharging unit 160 is installed in the step 101 and connected to each power supply and signal generation unit 130 to charge the power generated in each power supply and signal generation unit 130, as well as the diagnosis processing unit 140 and the transmission unit. 150, the charged power is sent to the diagnosis processing unit 140 and the transmission unit 150.
The voltage generated in the power feeding and signal generating unit 130 is an alternating current, and it is necessary to make it a direct current when charging. Therefore, as shown in FIG. 6, the charging / discharging unit 160 passes the full-wave rectifying circuit 161, the DC boosting and stabilizing circuit 162, and the overcharge prevention circuit 163, and stores the battery 164, A backflow prevention circuit 165 that prevents backflow when discharging from the battery 164 is also provided.
By providing the charging / discharging unit 160, it is possible to supply power by the self-powered inspection device 110 itself without having an external power supply means, and the device configuration can be made compact.

The operation of the self-power generation type inspection apparatus 110 configured as described above, that is, an escalator inspection method using the self-power generation type inspection apparatus 110 will be described below.
The self-power generation type inspection device 110 is operated in accordance with the operation of the escalator system 200 having the step 101 provided with the self-power generation type inspection device 110 and the normal step 201. An example of the operation method is shown in FIG. In this embodiment, the operation method is executed according to the analysis, inspection, and diagnosis execution program stored in advance in the storage unit 143 of the diagnosis processing unit 140 as described above. It can also be configured to execute in accordance with an instruction from the operator via the remote management device 222.

  As the escalator starts operation and the rollers 120a to 120d of the step 101 rotate, an AC voltage is generated from each power supply and signal generation unit 130 as described above, and the charging / discharging unit 160 starts charging. . The charging / discharging unit 160 ends the charging when the necessary amount of power is charged.

  On the other hand, when the scheduled time for escalator inspection and diagnosis is reached, the diagnosis processing unit 140 is activated, and the battery 164 of the charge / discharge unit 160 starts to supply power. Further, the diagnosis processing unit 140 or the escalator determines whether the state of the escalator is a state suitable for inspection and diagnosis, for example, an unmanned state. Thereafter, while operating the escalator, the diagnosis processing unit 140 collects, analyzes, and determines data for inspection and diagnosis based on the AC voltage waveform signal 170 transmitted by each power supply and signal generation unit 130, and Data is transmitted to the transmission unit 150. After completing these, the diagnosis processing unit 140 shifts to the sleep mode and suppresses power consumption. The charging operation is continued until the operation of the escalator is completed.

Hereinafter, specific inspection and diagnosis methods performed by the diagnosis processing unit 140 will be described.
The AC voltage waveform signal 170 sent from each power supply and signal generator 130 and shown in FIG. 8 reflects the rotation state of each of the rollers 120 a to 120 d of the step 101. Therefore, if there are distortions, scratches, slips on the front roller guide rails 207, the rear roller guide rails 208, and the guide rails 209, 210, wear or dropout of the rollers 120a to 120d, etc., the corresponding AC voltage waveform. Since the feature appears in the signal 170, the diagnosis processing unit 140 performs diagnosis based on the feature. An example of the processing is shown below.

Rotation speed / phase A point (zero cross point) that intersects the time axis in the AC voltage waveform signal 170 is a state in which the coil unit 132 is closest to the magnet 123. That is, the interval between the zero cross points corresponds to the passage time t of the magnet 123 with respect to the coil portion 132. By measuring this interval t (sec), the rotational speed (rad / sec) of each of the rollers 120a to 120d can be calculated. Further, the rotational phases of the rollers 120a to 120d can also be calculated by integrating the zero cross points that have passed.
If the number of rotations of a roller is r (sec-1) and the number of magnets 123 arranged on the roller is 2N, t is 1 / (2rN). It can also be seen that the phase has advanced by π rad by passing through N zero cross points.
By detecting the rotational speed and phase of the rollers 120a to 120d, it is possible to detect roller wear, dropout, eccentricity, presence or absence of scratches, rail slipping, rail scratches, and the like described below.
Note that these operations are executed in the diagnosis processing unit 140, the rotation speed of the processing unit 142, the phase detection unit 1421, and the integration unit 1424.

As described above, when the step 101 moves to the terminal gear 203 portion and the lower terminal gear 204 portion, the posture of the step 101 is reversed, so that the rollers 120a to 120d rotate. Is reversed. In the terminal gear 203 portion and the lower terminal gear 204 portion, where the guide rail is not provided, the rotation of the rollers 120a to 120d is only due to inertia. Therefore, the AC voltage waveform signal 170 also reflects these characteristics. Using this feature, it can be detected that the step 101 passes through the terminal gear 203 portion and the lower terminal gear 204 portion, and this point can be used as a reference point. For example, when the electric power of the electric signal when the step 101 passes through the terminal gear 203 portion and the lower terminal gear 204 portion is calculated, a graph as shown in FIG. 9 is obtained. From the state where the step 101 is in a portion without a rail and the power from the power supply and signal generation unit 130 is attenuated, the rollers 120a to 120d of the step 101 ride on the rails 207 to 210 again, and from the power supply and signal generation unit 130 By determining that the power rises again, the inversion part can be detected.
By detecting the reversal part, it is possible to obtain a reference point for specifying the position of the step, that is, the position of the abnormal part, which will be described below.
This operation is executed in the diagnosis processing unit 140 by the inversion detection unit 1422 of the processing unit 142.

Step Position The absolute position of the step 101 can be calculated by counting how many times the rollers 120a to 120d have rotated from here, that is, by integrating the rotation phase, with the reversing unit (for example, the rising point of power) as a reference. By obtaining the position of the step, the position of the abnormal part can be specified.
This operation is executed in the diagnosis processing unit 140, the position calculation unit 1423 of the processing unit 142, and the integration unit 1424.

Roller wear When at least one of the rollers 120a to 120d is worn, the roller diameter is reduced, so that the rotational speed is always increased. Therefore, the wear of the roller can be monitored by increasing the rotation speed.
This operation is executed in the diagnosis processing unit 140, the rotation speed of the processing unit 142, the phase detection unit 1421, and the integration unit 1424.

When at least one of the rollers 120a to 120d is dropped, the AC voltage waveform signal 170 is not obtained from the power supply and signal generator 130 corresponding to the roller, and the calculated rotation speed becomes zero. Therefore, it can be detected that the roller has been lost due to dropping or the like by continuing the state where the rotational speed becomes zero.
This operation is executed in the diagnosis processing unit 140 and the rotational speed and phase detection unit 1421 of the processing unit 142.

Roller eccentricity / scratch When at least one of the rollers 120a to 120d is eccentric or when the roller is damaged, it is determined whether there is a fluctuation component synchronized with the rotation of the roller in the rotational speed of the roller. . As a result, at least one eccentricity or flaw of the rollers 120a to 120d can be detected. For example, when at least one of the rollers 120a to 120d has an eccentricity, the rotation radius varies depending on the rotation angle. Since this fluctuation occurs in the rotation cycle of the roller, the rotation speed fluctuates in the rotation cycle of the roller. Therefore, the presence / absence of a component corresponding to the above-described rotation radius can be confirmed by performing frequency analysis of the rotational speed time-series data or the envelope component of the rotational speed time-series data.
This operation is executed in the diagnosis processing unit 140 and the rotational speed and phase detection unit 1421 of the processing unit 142.

Rail Sliding When the rail slips due to oil spill or the like, at least one of the rollers 120a to 120d rotates slowly. Therefore, the presence or absence of the slip can be monitored from the decrease in the rotation speed of the roller.
This operation is executed in the diagnosis processing unit 140 and the rotational speed and phase detection unit 1421 of the processing unit 142.

Rail Scratches When there is a scratch on the rail, the rotation speed of the rollers 120a to 120d varies when passing through the rail. Therefore, the scratch on the rail can be detected from the fluctuation of the rotation speed. Based on the operation of specifying the position of the step 101, the position of the scratch can be specified. In addition, when the fluctuation | variation of the said rotational speed is minute and it is buried in noise, it can cope with the following method.
i) Cut out a lot of time-series data of the rotation speed when the step 101 passes between the defined positions.
ii) Resample the cut out time-series data and convert them all to the same length L.
iii) Add the time-series data of the above length L or those obtained by enveloping them.
By the above processing, fluctuations caused by white noise are suppressed, and fluctuations caused by scratches occurring at the same position are emphasized. It is possible to detect a flaw and specify a flaw position from the result of the enhancement process.
This operation is executed in the diagnosis processing unit 140, the rotational speed of the processing unit 142, the phase detection unit 1421, and the position calculation unit 1423.

  The inspection diagnosis result information of the escalator that has been inspected and diagnosed by the diagnosis processing unit 140 as described above is transmitted from the diagnosis processing unit 140 to the transmission unit 150, and from the transmission unit 150, a receiving device included in the escalator system 200. For example, it is transmitted to 221 wirelessly. The inspection diagnosis result information received by the receiving device 221 is read by the operator or notified to the operator by a remote management device 222 provided as necessary. Based on the inspection diagnosis result information, necessary repairs and the like are performed on the escalator.

  As described above, according to the self-powered inspection device 110, the inspection method using the self-powered inspection device 110, and the escalator system 200 including the self-powered inspection device 110, the configuration is simpler than in the past. It is possible to inspect the rollers and guide rails provided on the steps and to detect abnormalities with high accuracy.

It is a perspective view which shows the step provided with the self-power-generation type inspection apparatus which is embodiment of this invention. It is a figure which shows the structure of the self-power-generation type inspection apparatus shown in FIG. It is a block diagram which shows the structure of the diagnostic process part shown in FIG. It is a figure which shows the example of arrangement | positioning of the magnet attached to the roller with which the electric power feeding and signal generation part shown in FIG. 2 is equipped. It is a top view which shows the coil part with which the electric power feeding and signal generation part shown in FIG. 2 is equipped. It is a block diagram which shows the structure of the charging / discharging part shown in FIG. It is a figure for demonstrating operation | movement of the self-power-generation type inspection apparatus shown in FIG. It is a graph which shows the alternating voltage waveform signal which the electric power feeding and signal generation part shown in FIG. 2 send out. It is a graph when the missing of a rail is detected in the diagnostic processing part shown in FIG. It is a figure which shows the escalator system provided with the self electric power generation type inspection apparatus shown in FIG. It is a perspective view which shows the step with which the conventional escalator is equipped.

Explanation of symbols

101 ... Steps, 110 ... Self-powered inspection devices, 120a, 120b ... Front rollers,
120c, 120d ... rear roller, 130 ... power feeding and signal generation unit,
140 ... diagnosis processing unit, 150 ... transmission unit, 160 ... charge / discharge unit,
200 ... Escalator system, 201 ... Step, 207 ... Front roller guide rail,
208 ... rear roller guide rails, 220 ... monitoring device.

Claims (10)

A self-powered inspection device that inspects the state of a conveyor having a plurality of steps connected endlessly and a guide rail that guides the movement of the steps,
A roller that contacts the guide rail and rotates on the guide rail and is rotatably attached to the step, and magnets having different polarities arranged alternately along the circumferential direction;
A power supply and signal generation unit that is disposed in a non-contact manner and fixed to the step so as to face the roller, generates an AC voltage according to the rotation of the roller due to the movement of the step, and sends an AC voltage waveform signal;
The AC voltage and the AC voltage waveform signal are supplied, a diagnostic processing unit that analyzes the AC voltage waveform signal and inspects the conveyor;
A self-powered inspection device characterized by comprising:   The self-power generation type inspection device according to claim 1, further comprising a transmission unit connected to the diagnosis processing unit and transmitting a diagnosis result of the conveyor by the diagnosis processing unit to the outside of the self power generation type inspection device.   The self-power generation type inspection device according to claim 2, further comprising a charging / discharging unit that is connected to the power supply and signal generation unit, the diagnostic processing unit, and the transmission unit and performs charging and power supply. A conveyor inspection method for inspecting the state of a conveyor comprising a plurality of steps connected endlessly and a guide rail that contacts a roller rotatably attached to each step and guides the movement of the steps. ,
By rotating the roller due to the movement of the step, an AC voltage and an AC voltage waveform signal are generated in a non-contact manner with the roller,
Inspect the conveyor by analyzing the AC voltage waveform signal,
Inspection method characterized by that.   The inspection method according to claim 4, wherein a rotation speed or a rotation phase of the roller is obtained from the AC voltage waveform signal, and the state of the roller and the guide rail is checked from the rotation speed or the rotation phase.   The inspection method according to claim 4, wherein it is determined that the roller has dropped due to the disappearance of the AC voltage waveform signal.   The inspection method according to claim 5, wherein the rotational phase is integrated to determine the rotational speed of the roller from a reference point, and the position of the step is determined from the rotational speed and used for inspection.   The inspection method according to claim 7, wherein the AC voltage waveform signal in a set range within the obtained rotation speed of the roller is added, and an abnormality at a specific position of the guide rail is emphasized and used for inspection.   The inspection method according to claim 7, wherein the reference point is determined from a change in the rotation direction of the roller. A self-powered inspection device according to claim 2 or 3;
A monitoring device that is provided separately from the self-powered inspection device and that is supplied with a diagnosis result from a diagnostic processing unit provided in the self-powered inspection device and monitors the state of the conveyor;
An escalator system characterized by comprising.

Images