CN106324081B - Handrail inspection device and handrail check system - Google Patents
Handrail inspection device and handrail check system Download PDFInfo
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- CN106324081B CN106324081B CN201610515810.XA CN201610515810A CN106324081B CN 106324081 B CN106324081 B CN 106324081B CN 201610515810 A CN201610515810 A CN 201610515810A CN 106324081 B CN106324081 B CN 106324081B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
Project of the invention is that the deterioration for the steel cord being built in the handrail of passenger conveyors is checked with high SN ratio.Multiple coil groups are arranged with being staggered in the direction of the width in handrail inspection device (1100) of the invention, and wherein coil group by configuring in a row form by the oscillator coil (1) for generating alternating current magnetic field reversed each other, oscillator coil (2) on bottom surface and positioned at the receiving coil among them or near centre in the longitudinal direction.
Description
Technical field
The steel cord being built in the present invention relates to inspection in the handrail of passenger conveyors (escalator, moving sidewalk etc.)
Deterioration technology.
Background technique
In passenger conveyors, passenger's stable posture is provided with the hand steered handrail of passenger.The handrail is by multiple portions
Part is constituted, and surface is the cover of the resin materials such as polyurethane or rubber, and inside is built-in with the referred to as tension structure for maintaining intensity
The component of part.
Mentioned strain component generally uses a plurality of steel cord side by side.Handrail is strong when steel cord deterioration (fracture, torsion etc.)
Degree reduces, and needs to check whether steel cord is normal condition when so checking handrail.
For example, disclosing the flaw detection dress of the steel cord (wirerope) in the handrail as escalator in patent document 1
It sets, circulates alternating current in the upper and lower first coil and the second coil for being located at the thickness direction of handrail when checking, the
The difference of the impedance of one coil and the second coil changed regulation it is above when judge steel cord exist deterioration technology.
In addition, in patent document 2, disclosing the failure detector of the rope as elevator as associated technology, having
Make rope a pair of of permanent magnet magnetized in the longitudinal direction, apply on the length direction of rope alternating current magnetic field magnet exciting coil and
The detection coil of configuration leakage magnetic flux between a pair of of permanent magnet, detecting the rope after carrying out self-magnetization, is based on detection coil
Output signal determine broken string position technology.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 10-111276 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2012-103177 bulletin
Summary of the invention
Subject to be solved by the invention
But in the technology of patent document 1, according to the upper and lower First Line for using the thickness direction positioned at handrail when checking
The difference of circle and the impedance of the second coil come the mode that judges, the handrail of measure object to first coil, the distance of the second coil not
Together, so there are problems that realize high SN ratio (signal-noise ratio).
In addition, in the technology of patent document 2, if equal it is found that in the presence of not by 2 magnet exciting coils from Fig. 1 of patent document 2
It is connected in series and measure object is made to be magnetized to the problem of a pair of of strong permanent magnet of saturated magnetization then can not achieve high SN ratio.
In addition, measure object is generated in the case where mobile under saturated magnetization state with certain speed ingredient and detected and excitation
The ingredient both sides of the amplitude of the ingredient of the output voltage of frequency equal frequencies generate in detection coil simultaneously, so there is detection
Signal cancellation, noise increase out etc. there are problems that being difficult to detect with high SN ratio deteriorating.
Then, project of the invention is with high SN than checking the bad of the steel cord being built in the handrail of passenger conveyors
Change.
A technical solution to solve project
In order to solve the above problems, the present invention is a kind of generates about the steel cord in the handrail for being built in passenger conveyors
Deterioration inspection data handrail inspection device, it is characterised in that: be provided with multiple coil groups, the coil group include:
On the face opposite with the handrail of check object along the extending direction of the handrail configure it is in a row, generate it is reversed each other
Alternating current magnetic field the first oscillator coil and the second oscillator coil；Be located at first oscillator coil and second oscillating line
The centre of circle or near centre, will be based on from the magnetic field that first oscillator coil and second oscillator coil receive
Receiving coil of the field waveform as the inspection data output, the handrail of each multiple coil groups in check object
It configures with being staggered in width direction.It is described below about other technologies scheme.
Invention effect
In accordance with the invention it is possible to check the deterioration for the steel cord being built in the handrail of passenger conveyors with high SN ratio.
Detailed description of the invention
Fig. 1 is the inspection that the deterioration about check object (steel cord) is generated using 2 oscillator coils and 1 receiving coil
The explanatory diagram of the principle of data.
Fig. 2 is the explanatory diagram in the direction that check object deposits the magnetic flux to interlink with receiving coil in a break situation.
Fig. 3 is the relationship of the position of the magnetic flux φ and fracture location that interlink with receiving coil in the case where indicating Fig. 2
Curve graph.
Fig. 4 is to indicate that the handrail of present embodiment checks the integrally-built block diagram of system.
Fig. 5 is the integrally-built concept map for indicating handrail inspection device.
The top Fig. 6 is the figure for indicating the field waveform of receiving coil output.Lower part is indicated from the field waveform on top
The figure of waveform after having carried out delete processing to noise (noise) ingredient in 1 initial period.
Fig. 7 (a) is the top plane view of handrail.(b) be (a) A-A to view sectional view.
Fig. 8 is the top plane view of handrail inspection device.
Fig. 9 is the ground plan of handrail inspection device.
Figure 10 is the figure of state when indicating for handrail inspection device to be arranged on handrail, and (a) is side view, is (b) vertical
Body figure.
Figure 11 is the flow chart for indicating to be determined the inspection processing at the deterioration position of steel cord with evaluating apparatus.
Figure 12 is to check that the waveform of data shows example.
Figure 13 is to check that the color map of data shows example.
Figure 14 is to check that the differentiated waveform of data shows example.
Figure 15 is that the color map of the differentiated waveform data of Figure 14 shows example.
Specific embodiment
Hereinafter, mode for carrying out the present invention (hereinafter referred to as " embodiment ") is described in detail with reference to the accompanying drawings.
Firstly, with reference to Fig. 1, illustrate it is being used in present embodiment, generated using 2 oscillator coils and 1 receiving coil
The principle of the inspection data of deterioration about check object (steel cord).
As shown in Figure 1, in present embodiment, in the position opposite with check object M, in the extending direction of check object M
By oscillator coil (1) (the first oscillator coil), receiving coil, oscillator coil (2) (the second oscillator coil) on (transverse direction of Fig. 1)
It configures in a row as coil group.
Alternating current magnetic field reversed each other occurs for oscillator coil (1), oscillator coil (2).
Receiving coil is located at the centre of oscillator coil (1) Yu oscillator coil (2), and output is based on from oscillator coil (1) and vibration
The field waveform in coil (2) received magnetic field is swung as inspection data.
The magnetic line of force B1, B2, the B3 occurred from oscillator coil (1) is leaked from check object M and is returned by check object M
It returns oscillator coil (1).At this point, the size for returning to the magnetic line of force B1, B2, the B3 of oscillator coil (1) depends on the section of check object M
Long-pending and height h (distance of (1) from check object M to oscillator coil).In addition, it is stronger closer to oscillator coil (1) magnetic force, so
The size relation of the intensity of the magnetic line of force B1, B2, B3 is B1 > B2 > B3.
Equally, the magnetic line of force B11, B12, the B13 occurred from oscillator coil (2) is by check object M, but from check object M
It leaks and returns to oscillator coil (2).In addition, the size relation of the intensity of the magnetic line of force B11, B12, B13 is B11 > B12 > B13.
Herein, the upwardly direction of Fig. 1 is set as to the positive direction of magnetic force.In addition, setting oscillator coil (1) and oscillator coil
(2) intensity of the alternating current magnetic field occurred is same.In addition, hereinafter, considering to occur in some moment from oscillator coil (1)
Magnetic field occurs on the direction for pass downwardly through therein, and the magnetic field occurred from oscillator coil (2) is upwardly through therein
Direction on there is a situation where.
At this point, the position between oscillator coil (1) and receiving coil, magnetic line of force B1 cancel out each other with magnetic line of force B13, but
Because of magnetic line of force B1 stronger (B1+B13 > 0), upward magnetic line of force residual.
In addition, the position between oscillator coil (2) and receiving coil, magnetic line of force B3 cancel out each other with magnetic line of force B11, but
Because of magnetic line of force B11 stronger (B3+B11 < 0), downward magnetic line of force residual.
In addition, magnetic line of force B2 cancels out each other with magnetic line of force B12 in receiving coil, because of magnetic line of force B2 and magnetic line of force B12
Intensity be same (B2+B12=0), so non-retained magnetic forces line.To which if check object M is normal, (there is no fractures
Deng deterioration), then electric current does not occur in receiving coil.
Herein, with reference to Fig. 2, there is the case where being broken for check object M and be illustrated.Hereinafter, will be handed over receiving coil
The magnetic flux of chain is expressed as φ.
As shown in Fig. 2 (a), there is fracture in the position in check object M between oscillator coil (1) and receiving coil
When, occur from oscillator coil (1) and more leaked out upwards by the magnetic line of force in check object M from fracture location, so magnetic
Logical φ < 0.
In addition, as shown in Fig. 2 (b), in check object M when the following location directly of receiving coil has fracture, magnetic
Logical φ=0.
In addition, existing as shown in Fig. 2 (c) in the position in check object M between receiving coil and oscillator coil (2)
When fracture, magnetic flux φ > 0.
At this point, the relationship of the position of the magnetic flux φ and fracture location that interlink with receiving coil is substantially as shown in Figure 3.
Thus, it is possible to which the variation passed through at any time based on the electric current (field waveform) exported from receiving coil, determines inspection
It checks as the fracture etc. in M deteriorates position.That is, the field waveform exported from receiving coil is big at the deterioration position of check object M
Width ground changes up and down.Therefore, it is based on such structure and principle, without especially using permanent magnet, it will be able to the generation of high SN ratio
The inspection data of deterioration about check object M.
Wherein, if the intensity for the alternating current magnetic field that oscillator coil (1) and oscillator coil (2) occur is same, receiving coil
When position is deviated from their centre to one party, even if check object M normal (there is no the deteriorations such as fracture), with receiving coil
The magnetic flux φ of interlinkage will not become 0.But the even feelings that the position of receiving coil is deviated from their centre to one party
Condition then can also be adjusted to oscillating line in the range of the limit of amplification and the processing of the electric current exported from receiving coil
One side of the alternating current magnetic field that circle (1) and oscillator coil (2) occur is more stronger than another party and copes with (magnetic flux φ=0).To receive
Coil is not necessarily to configuration in the stringent centre of oscillator coil (1) and oscillator coil (2), also can be only fitted to the attached of centre
Closely.In addition, in the fraction of situation of the offset of the position of receiving coil from their centre, even if oscillator coil (1) and oscillating line
The intensity for enclosing the alternating current magnetic field that (2) occur keeps same (magnetic flux φ ≈ 0), can also obtain effectively checking data.
Then, the overall structure of system, which is illustrated, to be checked for the handrail of present embodiment.As shown in figure 4, handrail is examined
System 1000 is looked into include handrail inspection device 1100, evaluating apparatus 1200, operation inputting part 1300 and display unit 1400 and constitute.
Handrail inspection device 1100 generates the inspection of the deterioration about the steel cord in the handrail for being built in passenger conveyors
Data.
Evaluating apparatus 1200, which is executed, determines the bad of wirerope based on the inspection data received from handrail inspection device 1100
Change the inspection processing at position.
Operation inputting part 1300 is the information input units such as keyboard, mouse.
Display unit 1400 is LCD (the Liquid Crystal for showing inspection result (the analysis result for checking data) etc.
Display: liquid crystal display), CRT (Cathode Ray Tube: cathode-ray tube) display etc..
Handrail inspection device 1100 has sensor portion 1500 (coil group) and sensor portion 1510 (coil group), switching part
(1) 1110 (the first switching part) and switching part (2) 1111 (the second switching part) exchange generating unit 1120, amplification/filtering part
1130, modulus (AD) converter section 1150, time adjustment/detection section 1160, down-sampling portion 1170, storage unit 1180 and data communication
Portion 1190 and constitute.Wherein, in Fig. 4, for ease of illustration, sensor portion (symbol 1500,1510) and switching part (symbol
1110,1111) each 2 are illustrated only, but can also respectively there are 3 or more.
About sensor portion 1500, sensor portion 1510, sensor portion 1500 is illustrated as representing.Sensor
Portion 1500 is made of the oscillator coil (1) (2) 1501 and receiving coil 1511 of generation alternating current magnetic field.Wherein, oscillator coil (1)
(2) 1501 be oscillator coil shown in Fig. 1 (1), oscillator coil (2), hereinafter, there are the feelings of the record of ellipsis " 1501 "
Condition.As described above, alternating current magnetic field reversed each other occurs for oscillator coil (1), oscillator coil (2).In addition, receiving coil 1511 is
Receiving coil shown in Fig. 1, hereinafter, the case where there are the records of ellipsis " 1511 ".
Oscillator coil (1), receiving coil, oscillator coil (2), in the face (bottom surface) opposite with check object, that is, handrail 1, edge
Handrail 1 extending direction configuration it is (refer to Fig. 9) in a row.
Receiving coil is located at the centre (with reference to Fig. 9) of oscillator coil (1) and oscillator coil (2), and output is based on from oscillating line
The field waveform in (1) and oscillator coil (2) received magnetic field is enclosed as inspection data.
As shown in figure 5, handrail inspection device 1100 is configured with from oscillator coil (1) (2) 1501 to oscillator coil (1) (2)
The N of 150N is to oscillator coil, configured with corresponding with each oscillator coil (1) (2) from receiving coil 1511 to receiving coil
N number of receiving coil of 151N.Wherein, the oscillator coil (1) in 1 coil group, receiving coil, oscillator coil (2) it is actual
Configuration status is as shown in Figure 1.
On oscillator coil (1) (2) 1501 to oscillator coil (1) (2) 150N, via switching part (1) 1110, (switching is opened
Close) it is connected with 1 exchange generating unit 1120.The switching action carried out by switching part (1) 1110, from exchange generating unit 1120
Alternating current (such as electric current of 20kHz) flow successively through these oscillator coils (1) (2), flow through the oscillator coil of alternating current
(1) alternating current magnetic field occurs for (2).Wherein, in order to make oscillator coil (1), oscillator coil (2) that alternating current magnetic field reversed each other occur,
Such as keep the coiling direction of each coil opposite.
The alternating current that assigned frequency occurs for generating unit 1120 is exchanged, at the time of flowing through electric current with the control of control unit 1140.
Specifically, control unit 1140 is only flowing through oscillator coil (1) (2) 1501 to this N of oscillator coil (1) (2) 150N in order to economize on electricity
To the time of oscillator coil, control exchange generating unit 1120 carries out oscillation action.In turn, the signal that exchange generating unit 1120 occurs
It is used as the reference signal 3100 of time adjustment/detection section 1160 detection movement.
In addition, control unit 1140 occurs for controlling the same of switching part (1) 1110 and switching part (2) 1111 (switching switch)
Walk signal 3101.Switching part (1) 1110 and switching part (2) 1111 can switch simultaneously according to synchronization signal 3101, by each line
Circle group successively acts.
In addition, from receiving coil 1511 to receiving coil 151N this N number of receiving coil via switching part (2) 1111 with put
Greatly/filtering part 1130 connects, and the output signal from amplification/filtering part 1130 is converted to digital signal by AD conversion portion 1150,
The digital signal is transferred to time adjustment/detection section 1160.Wherein, by carrying out analogue data with Analog to Digital Converter section 1150
Numerical data, processing (down-sampling etc.) later become easy.In time adjustment/detection section 1160, carry out receiving line
It encloses in the field waveform detected, deletes the field waveform (noise section) of the specified period after being switched with switching part (2) 1111
Processing (illustrating details with Fig. 6).
In addition, the period of the delete processing in the field waveform of each receiving coil, is correctly controlled by control unit 1140.
After the delete processing, time adjustment/detection section 1160 is carried out at full-wave rectification processing and filtering using reference signal 3100
Reason (the mainly processing of low-pass filter (LPF) progress).Then, with time adjustment/detection section 1160 treated number believe
Number, it is downsampled portion 1170 and converts (down-sampling) as 1000 points of the sample frequency (such as 200kHz) in Analog to Digital Converter section 1150
1 degree sample frequency (such as 200Hz) sparse data.Thereby, it is possible to reduce the capacity of data entirety.
Data after being converted with down-sampling portion 1170 are stored in storage unit 1180, from data communication section 1190 as defeated
Signal 3200 exports out.Because data volume is small, data communication section 1190 can be by wirelessly or non-wirelessly to evaluating apparatus
1200 send the data about multiple receiving coils.
Then, with reference to Fig. 6, the time interval etc. switched by each coil group is illustrated.In Fig. 6, top (upper half
Part) it is the figure for indicating the field waveform of receiving coil output, lower part (lower half portion) is indicated from the field waveform on top
The figure of waveform after having carried out delete processing to the noise contribution (noise) in 1 initial period.
In each oscillator coil (1) (2) during time width T1 (such as 50 μ s (200kHz)), alternating current is flowed through.
Then, successively switch the connection of each oscillator coil (1) (2) with switching part (1) 1110 (Fig. 5), flow through electric current with T1 intervening sequences
Until n-th oscillator coil (1) (2) 150N.
Time width T2 is, for example, the sampling time i.e. 10ms of 100Hz degree (that is, moment 1 and the time width at moment 2 are
10ms).Time width T3 is " time width T2- time width T1 × N ", with (the figure of control unit 1140 during time width T3
5) stopped the control of the electric current from exchange 1120 flow direction oscillation coil (1) (2) of generating unit.The relationship of these time widths is
T1 < < T2, T1 × N < < T3 (in Fig. 6, for the ease of mapping, do not indicate their relationship correctly).To account for time width
During the time width T3 of most of the time in T2, by stopping from exchange 1120 flow direction oscillation coil (1) (2) of generating unit
The control of electric current is able to suppress consumption electric current, can be realized economize on electricity.
On the other hand, for this N number of receiving coil from receiving coil 1511 to receiving coil 151N, successively in corresponding vibration
The connection for switching switching part (2) 1111 (Fig. 5) at the time of flowing through alternating current in coil (1) (2) is swung, to amplification/filtering part
1130 (Fig. 5) input signals.As shown in the top part of figure 6, noise has been mixed into the initial part of each field waveform 5100.This connects
Receiving noise is the noise generated because of connection is had switched with the switching part (2) 1111 (Fig. 5) of switching receiving coil.
Herein, for by time adjustment/detection section 1160 when adjusting function, deletion is detected with receiving coil
The processing of noise contribution is illustrated.Oscillator coil (1) (2) induction flowed through by the alternating current that exchange generating unit 1120 occurs
The magnetic field of generation is detected by corresponding receiving coil.As described above, at this point, receiving coil switching part (2) 1111 (Fig. 5)
Successively switching connection, so generating switching noise.Waveform 5200 after the noise delete processing of the lower part of Fig. 6 is to delete initially
1 period, the time width T4 in remaining 3 periods is detected as to the example of signal component.The noise delete processing is for example
Microcontroller (the time adjustment/detection equipped with CPU (Central Processing Unit: central processing unit) can be used
Portion 1160) it realizes.
Then, before illustrating evaluating apparatus 1200 shown in Fig. 4, for structural example of handrail inspection device 1100 etc. into
Row explanation.
As shown in Fig. 7 (a) (b), handrail 1 is by more steel cords 3 built-in in the resins such as polyurethane or rubber 2 and resin 2
It constitutes.
Then, the structural example of handrail inspection device 1100 is illustrated.Fig. 8 is the top surface of handrail inspection device 1100
Figure.Fig. 9 is the ground plan of handrail inspection device.
As shown in Figure 8, Figure 9, handrail inspection device 1100 has 13,2 main body 11, handle 12, encoder wheel idler wheels
14,2 fixed vertical idler wheels, 15,2 movable vertical idler wheels 16, (oscillator coil (1) connects 17,5 (N=5) coil groups of hinge
Take-up circle, oscillator coil (2)) it is used as primary structure.
Main body 11 is approximately cuboid shape, and upper surface is equipped with reset button, start button, stop button, various displays
Lamp.
Handle 12 is the user of the handrail inspection device 1100 part dominated by hand.
Encoder wheel 13 is the encoder for measuring handrail inspection device 1100 relative to the relative movement distance of handrail 1.
In addition, encoder wheel 13 and 2 idler wheel 14 add up to 3 idler wheels play maintain check object i.e. handrail 1 and and its
The effect of spacing distance (such as 2mm) between opposite bottom surface.Because the upper surface of handrail 1 be not perfect plane but slightly
The cambered shape of micro-strip, so the use of 3 idler wheels being like this best for the attitude stabilization of handrail inspection device 1100
's.
In addition, when using handrail inspection device 1100, with 2 fixed vertical idler wheel 15 and 2 movable vertical idler wheels 16 from
Two sides clip handrail 1.In this case, 2 fixed vertical idler wheels 15 are fixed on the main body 11, but 2 movable vertical idler wheels 16
It can be moved in the width direction of handrail 1 by 2 hinges 17, so a variety of handrails different for width dimensions can
It is suitably clamped with 2 fixed vertical idler wheel 15 and 2 movable vertical idler wheels 16.
As shown in figure 9, being configured with this 5 coil groups of 1ch~5ch on the bottom surface opposite with check object, that is, handrail 1
(oscillator coil (1), receiving coil, oscillator coil (2)).In each coil group, oscillator coil (1), receiving coil, oscillating line
The extending direction configuration that (2) are enclosed along the length direction, i.e. check object, that is, handrail 1 of handrail inspection device 1100 is in a row.
Moreover, being staggered ground (each other) in the width direction of each comfortable check object, that is, handrail 1 of this 5 coil groups of 1ch~5ch
It configures (oblique lattice configuration), is built in the entire width of the steel cord 3 in covering handrail 1 as a result,.
State when handrail inspection device 1100 is arranged on handrail 1 (in Figure 10 (b), is saved as shown in Figure 10 (a) (b)
The diagram of each button, various display lamps above slightly).When being checked with the handrail inspection device 1100, for example, in Figure 10
(a) inspector, which holds handrail inspection device 1100, in the state that (b) is shown keeps its motionless, then makes handrail 1 in the direction of extension
Sliding action.
Fig. 4 is returned, evaluating apparatus 1200 is illustrated.Evaluating apparatus 1200 is to execute to be based on from handrail inspection device
The 1100 inspection data received determine the computer installation of the inspection processing at the deterioration position of steel cord.Evaluating apparatus 1200 wraps
Include data input part 1210, data processing division 1220, signaling control unit 1230, output processing unit 1240, storage unit 1250
It is constituted with control unit 1260.In addition, checking that data are equivalent to the reception line from handrail inspection device 1100 in present embodiment
Enclose the data in all stages of the data input part 1210 of evaluating apparatus 1200.
Data input part 1210 (checks number from 1190 input/output signal of data communication section of handrail inspection device 1100
According to).
Data processing division 1220 is based on the output letter for sending from data input part 1210 and being obtained by control unit 1260
Number (check data) carries out inspection processing (details are described further below with Figure 11).The information such as inspection result, which are properly saved, is depositing
In storage portion 1250.
Signaling control unit 1230 (referring to Fig. 4) is correspondingly carried out with the operation signal sent from operation inputting part 1300
The control of the signal in communication with handrail inspection device 1100.
Output processing unit 1240 is carried out for suitably using curve graph or the form of table with vision on display unit 1400
Upper understandable display format shows the processing of inspection result etc..
Storage unit 1250 saves treated the data etc. of data processing division 1220.
Control unit 1260 (referring to Fig. 4) is by CPU (Central Processing Unit: central processing unit), ROM
(Read Only Memory: read-only memory), RAM (Random Access Memory: random access memory) etc. are constituted,
Carry out the exchange of data and the control of calculation process etc..
Wherein, data processing division 1220, signaling control unit 1230, output processing unit 1240 are by by storage unit 1250
The program and data of middle preservation are loaded into control unit 1260, execute calculation process and realize.
Then, with reference to Figure 11, the inspection processing carried out for the data processing division 1220 of evaluating apparatus 1200 is illustrated
(also suitably with reference to Fig. 4 etc.).Inspection processing for 1ch~5ch this 5 coil group (referring to Fig. 9) inspection data respectively into
Row.
Firstly, data processing division 1220 obtains the inspection data (step from handrail inspection device 1100 from storage unit 1250
Rapid S1).
Then, data processing division 1220 carries out time unifying processing (step S2).Time unifying processing refer to for pair
The length direction (when inspection of as shown in Figure 9 coil group 1ch, 3ch, 5ch and coil group 2ch, 4ch in handrail inspection device 1100
Handrail 1 extending direction) on the processing that is modified of deviation.It is handled by the time unifying, (or is helped with time shaft
The position of the extending direction of hand 1) display inspection result in the case where, the inspection result of all coil group 1ch~5ch can be made
Relative to time shaft (or position of the extending direction of handrail 1) alignment (referring to Figure 12~Figure 15).
Then, data processing division 1220 carries out offset adjustment processing (step S3).Offset adjustment processing implies that adjustment
Check the processing of the offset (average value and zero deviation) in data (field waveform 5100 of Fig. 6).To check data
In the case that offset is zero or is small, do not need to carry out step S3.
Then, width (such as the 100ms degree) step S5~step S7 repeatedly in required time of data processing division 1220
It handles (step S4~step S8).
Data processing division 1220 judges whether there is departing from reference range the inspection data of stipulated time width
Waveform values (step S5) are judged as normal (step S6) in the case where no, be judged as abnormal (step S7) in the case where being.
When step S4~step S8 processing is for all checking end of data, data processing division 1220 is in display unit 1400
Upper display inspection result.
Then, with reference to Figure 12~Figure 15, the display example of inspection result is illustrated.
Figure 12 is that the waveform of inspection result shows example.Herein, it in step S1~step S9 processing of Figure 11, does not need
Carry out step S4~step S8 processing (can independently show with normal, abnormal).In addition, beginning label, end label point
It is not the aluminium strip as mark pasted on the whole in the starting position of handrail 1, end position in width.
In Figure 12, it is shown that waveform corresponding with coil group 1ch~5ch.In waveform is shown, the longitudinal axis is waveform values
(peak value), horizontal axis are the extending direction positions of handrail 1.It wherein, can will be horizontal by using the measured value etc. of encoder wheel 13
Axis is converted to the extending direction position of handrail from time shaft.The conversion can also be carried out with other methods.Such as, because it is known that line
The distance of the deviation of the length direction on the bottom surface of handrail inspection device 1100 of circle group 1ch and coil group 2ch, so can
Relative moving speed and coil group 1ch and coil group 2ch based on handrail inspection device 1100 relative to handrail 1 respectively detect
Deviation at the time of beginning label carries out the conversion.Alternatively, it is also possible to use these methods simultaneously, to the change data of a side
Interpolation etc. is carried out with the change data of another party.
In addition, in Figure 12, handrail state 20 is the not actual displayed in this embodiment for explanation.In addition, P1~P6
Indicate the fracture location of the steel cord 3 in handrail 1.Wherein, which is that steel cord 3 is deliberately arranged in this way in order to test use
Fracture location.
From left side when sequential observation waveform 1ch~waveform 5ch, firstly, in position (the extending direction position of beginning label
It sets.It is same as below) because waveform 1ch~waveform 5ch significantly changes up and down there are aluminium strip.In addition, for terminating
The position of label is also same.
Then, in the position of correspondence P1, waveform 4ch, the waveform 5ch close to the width position of fracture are significantly upper and lower
It changes, but waveform 1ch~waveform 3ch of the width position far from fracture is almost unchanged.
Then, in the position of correspondence P2, waveform 2ch, the waveform 3ch close to the width position of fracture are significantly upper and lower
It changing, waveform 1ch, the waveform 4ch that the width position of distance fracture is slightly remote change more up and down compared with them,
The waveform 5ch of width position far from fracture is almost unchanged.
About the position of corresponding P3~P6, similarly, the waveform for being more proximate to the width position of fracture changes up and down
Bigger, the waveform of the width position far from fracture is almost unchanged.
By watching such display picture, capable of learning the beginning label in handrail 1 and terminating the extending direction of label
The extending direction position of the fracture of position and steel cord 3 and width position.
Then, with reference to Figure 13, example, which is illustrated, to be shown for the color map for checking data identical with Figure 12.In order to
It carries out the color map to show, it is also desirable to carry out step S4~step S8 in step S1~step S9 processing of Figure 11
(normal, abnormal information is necessary display).
Herein, in the case where there are the waveform values (the step S5 of Figure 11 is yes) departing from reference range and being judged as exception
(the step S7 of Figure 11), the first color C1 shown in the bottom right of Figure 13 (such as red) table in the case which is positive
Show, the second color C2 shown in the bottom right of Figure 13 (such as blue) is indicated in the case which is negative.
In addition, being judged as normal situation there is no the waveform values (the step S5 of Figure 11 is no) departing from reference range
Under (the step S6 of Figure 11), the third color C3 (such as yellow) shown in the bottom right of Figure 13 indicate.In addition, the 4th color C4 is
The Neutral colour of first color C1 and third color C3, the 5th color C5 are the Neutral colour of the second color C2 Yu third color C3.
Wherein, gradual change is carried out in Figure 13 show that however, you can also not carry out gradual change to show.
It is shown by watching color map as Figure 13, can learn the beginning label in handrail 1 and terminates label
Extending direction position and steel cord 3 fracture extending direction position and width position.
It is shown in addition, also differentiated waveform can be carried out as shown in figure 14.It is identical that Figure 14 shows the case where based on Figure 12
Inspection data carry out differential process and show waveform.In Figure 12, the fracture with steel cord 3 accordingly significantly changes up and down
The zero crossing of waveform portion correspond to the extending direction position of fracture, be not zero crossing but maximal point is corresponding and in Figure 14
In the extending direction position of fracture, so having the advantages that the extending direction position that fracture is visually more readily understood.
Figure 13 is to carry out the figure that shows of color map to inspection data identical with Figure 12, equally, Figure 15 be to figure
The 14 identical figures for checking data progress color map and showing.
In addition, Figure 12, Figure 14 can not also be distinguished display waveform 1ch~waveform 5ch, but be added up with by them
1 obtained waveform is shown.Although can learn fracture in this way, the width position of the fracture of steel cord 3 cannot be learnt
Extending direction position, as long as so aobvious using waveform single in this way in the case where learning the extending direction position of fracture
Visually it is easy to watch when showing.It is aobvious alternatively, it is also possible to carry out color map corresponding with cumulative obtained 1 waveform
Show.
In this way, handrail inspection device 1100 according to the present embodiment, by make it is multiple make to occur on bottom surface it is anti-each other
To the oscillator coil (1) of alternating current magnetic field, oscillator coil (2) and positioned at the receiving coil among them or near centre in length
Configured on direction it is in a row made of coil group be arranged with being staggered in the width direction of steel cord 3, without using permanent magnet (energy
Enough correspondingly reduce size, reduce cost), it will be able to it is generated with high SN ratio about in the handrail 1 for being built in passenger conveyors
The inspection data of the deterioration of steel cord 3.Wherein, preferably multiple coil groups are in such a way that the width for covering steel cord 3 is whole in width
Degree is arranged with being staggered (each other) on direction.
In addition, by using the structure for using switching part (1) 1110 and switching part (2) 1111, it is only necessary to which 1 exchange generates
Economize on electricity, low cost, densification are realized so circuit scale can be reduced in portion 1120.
In addition, deleting and being switched with switching part (2) 1111 by from the field waveform that multiple receiving coils respectively obtain
The switching noise of specified period afterwards can further increase SN ratio.
In addition, can simply be measured by having encoder wheel 13, using handrail inspection device 1100 relative to helping
The relative movement distance of hand 1.
In addition, by maintaining handrail 1 and handrail inspection device with total 3 idler wheels of encoder wheel 13 and 2 idler wheel 14
Spacing distance between 1100 bottom surface can be such that the posture of the handrail inspection device 1100 when checking becomes stable.
In addition, evaluating apparatus 1200 executes inspection processing based on the inspection data received from handrail inspection device 1100,
It so can determine that the deterioration position of steel cord 3.
The explanation of embodiment is ended here, but mode of the invention is not limited to this.For example, in Figure 13 and Figure 15,
The positive waveform values that will be disengaged from reference range are set as the first color C1, and the negative waveform values that will be disengaged from reference range are set as
Second colors C2, but they can also be indicated with identical color.
In addition, in the case where judging whether there is in the step S5 of Figure 11 departing from the waveform values of reference range, it can also
With squared to waveform values, judge whether to be more than threshold value.
In addition to this, it for specific structure, can be appropriately changed within the scope not departing from the gist of the present invention.
Symbol description
1 handrail
2 resins
3 steel cords
11 main bodys
12 handles
13 encoder wheels
14 idler wheels
15 fixed vertical idler wheels
16 movable vertical idler wheels
17 hinges
20 handrail states
1000 handrails check system
1100 handrail inspection devices
1110 switching parts (1)
1111 switching parts (2)
1120 exchange generating units
1130 amplifications/filtering part
1140 control units
1150 Analog to Digital Converter section
1160 times adjustment/detection section
1170 down-sampling portions
1180 storage units
1190 data communication sections
1200 evaluating apparatus
1210 data input parts
1220 data processing divisions
1230 signaling control units
1240 output processing units
1250 storage units
1260 control units
1300 operation inputting parts
1400 display units
1500,1510 sensor portions (coil group)
1501~150N oscillator coil (1) (2)
1511~151N receiving coil
M check object.
Claims (6)
1. a kind of handrail inspection device generates the inspection number of the deterioration about the steel cord in the handrail for being built in passenger conveyors
According to, it is characterised in that:
Multiple coil groups are provided with, the coil group includes:
In a row, generation is configured mutually along the extending direction of the handrail on the face opposite with the handrail of check object
For the first oscillator coil and the second oscillator coil of reversed alternating current magnetic field；With
It is near the centre or centre of first oscillator coil and second oscillator coil, will be based on from described first
Reception line of the field waveform in the magnetic field that oscillator coil and second oscillator coil receive as the inspection data output
Circle,
The handrail inspection device further include:
Generate the exchange generating unit of the alternating current of assigned frequency；
First switching part is connect with the exchange generating unit and multiple first oscillator coils, second oscillator coil,
So that the alternating current that the exchange generating unit generates flows successively through multiple first oscillator coils, second oscillation respectively
The mode of coil switches over；
The second switching part being connect with multiple receiving coils；
Amplification/the filtering part being connect via second switching part with multiple receiving coils；
Time adjustment/detection section is connect with the amplification/filtering part, using the reference signal from the exchange generating unit
Carry out detection；With
Control unit, so that by including each of first oscillator coil, second oscillator coil and described receiving coil
The mode that the coil group successively acts controls first switching part to multiple first oscillator coils, second vibration
The switching and switching of second switching part to multiple receiving coils of coil are swung,
Each multiple coil groups configure with being staggered in the width direction of the handrail of check object.
2. handrail inspection device as described in claim 1, it is characterised in that:
Each multiple coil groups configure in the width direction of the handrail of check object to cover and be built in institute with being staggered
State the entire width of the steel cord in handrail.
3. handrail inspection device as described in claim 1, it is characterised in that:
Time adjustment/the detection section by from it is in the field waveform that multiple receiving coils respectively obtain, immediately with described
The field waveform of specified period after the switching that second switching part carries out is deleted.
4. handrail inspection device as claimed in claim 1 or 2, it is characterised in that:
Also there is encoder wheel, measure relative movement distance of the handrail inspection device relative to the handrail.
5. handrail inspection device as claimed in claim 4, it is characterised in that:
Between being maintained between the handrail and the opposite face of check object with 3 idler wheels for including the encoder wheel
Gauge from.
6. a kind of handrail checks system characterized by comprising
Handrail inspection device of any of claims 1 or 2；With
Evaluating apparatus is executed based on the inspection data received from the handrail inspection device and is determined the bad of the steel cord
Change the inspection processing at position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-133231 | 2015-07-02 | ||
| JP2015133231A JP2017013974A (en) | 2015-07-02 | 2015-07-02 | Handrail inspection device and handrail inspection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106324081A CN106324081A (en) | 2017-01-11 |
| CN106324081B true CN106324081B (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610515810.XA Active CN106324081B (en) | 2015-07-02 | 2016-07-01 | Handrail inspection device and handrail check system |
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| Country | Link |
|---|---|
| JP (1) | JP2017013974A (en) |
| CN (1) | CN106324081B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491093B (en) * | 2017-07-13 | 2020-11-13 | 华北水利水电大学 | High-power supply path tracking and identifying device and method |
| JP7137530B2 (en) * | 2019-05-31 | 2022-09-14 | 株式会社日立ビルシステム | Metal impurity inspection device |
| JP7341922B2 (en) * | 2020-02-28 | 2023-09-11 | 株式会社日立ビルシステム | Wire inspection system and wire inspection equipment |
| CN115417284A (en) * | 2022-05-19 | 2022-12-02 | 南京理工大学 | Escalator fault identification and early warning method based on depth self-encoder |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2154484Y (en) * | 1992-12-28 | 1994-01-26 | 重庆建筑工程学院 | Automatic detector for steel cable |
| JPH1019852A (en) * | 1996-07-03 | 1998-01-23 | Hitachi Building Syst Co Ltd | Flaw detecting apparatus for wire rope |
| JPH10111276A (en) * | 1996-10-07 | 1998-04-28 | Nippon Stec:Kk | Flaw detector |
| JP2000313583A (en) * | 1999-04-28 | 2000-11-14 | Hitachi Building Systems Co Ltd | Diagnosing method and magnetic flux change inspection device for steel cord for handrail |
| JP4825525B2 (en) * | 2006-02-01 | 2011-11-30 | 株式会社日立ビルシステム | Wire rope flaw detector |
| JP4295774B2 (en) * | 2006-07-20 | 2009-07-15 | 株式会社日立ビルシステム | Wire rope flaw detector |
| JP5210532B2 (en) * | 2007-03-14 | 2013-06-12 | 東京製綱株式会社 | Simple rope abnormality detection device |
| JP5031528B2 (en) * | 2007-11-19 | 2012-09-19 | 株式会社日立製作所 | Wire rope flaw detector |
| FR2940685B1 (en) * | 2008-12-31 | 2011-03-18 | Michelin Soc Tech | DEVICE FOR CONTROLLING METALLIC WIRES |
| CN102200528B (en) * | 2011-04-02 | 2013-04-24 | 太原理工大学 | On-line detection device for broken wires of wire ropes |
| JP5351925B2 (en) * | 2011-04-05 | 2013-11-27 | 株式会社日立製作所 | Inspection device and inspection method for long member for transfer mechanism including steel cord |
| US20130024135A1 (en) * | 2011-07-22 | 2013-01-24 | Blum Dieter W | Method And Apparatus For Ferromagnetic Cable Inspection |
| CN104215687A (en) * | 2014-08-28 | 2014-12-17 | 山西科为感控技术有限公司 | Magnetic force line balanced detection sensor employing wire rope |
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| CN106324081A (en) | 2017-01-11 |
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