CN106324081A - Hanrail inspection device and handrail inspection system - Google Patents
Hanrail inspection device and handrail inspection system Download PDFInfo
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- CN106324081A CN106324081A CN201610515810.XA CN201610515810A CN106324081A CN 106324081 A CN106324081 A CN 106324081A CN 201610515810 A CN201610515810 A CN 201610515810A CN 106324081 A CN106324081 A CN 106324081A
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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
It is an object of the present invention to check the deterioration of the steel cord built in the handrail of the passenger conveyer at a high SN ratio. The handrail inspection device (1100) of the present invention is provided with a plurality of coil groups which are shifted in the width direction, wherein the coil group is composed of an oscillation coil (1), an oscillation coil (2) and an oscillation coil (2) which generate an alternating magnetic field which is opposite to each other on the bottom surface, and the receiving coils located in the middle or the middle thereof are arranged in a row in the longitudinal direction.
Description
Technical field
The present invention relates to the steel cord that inspection is built in the handrail of passenger conveyors (escalator, moving sidewalk etc.)
The technology of deterioration.
Background technology
In passenger conveyors, passenger's firm position after dismount is provided with the handrail that passenger is hand steered.This handrail is by multiple portions
Part is constituted, and surface is the cover of the resin material such as polyurethane or rubber, and inside is built-in with and is referred to as tension force structure for maintain intensity
The parts of part.
Mentioned strain component uses a plurality of steel cord the most side by side.During this steel cord deterioration (rupture, torsion etc.), handrail is strong
Degree reduces, so needing when checking handrail to check whether steel cord is normal condition.
Such as, in patent documentation 1, disclose the flaw detection as the steel cord (steel wire rope) in the handrail of escalator and fill
Put, be positioned at the upper and lower first coil of thickness direction and the second coil midstream indirect current stream of handrail when checking, the
The difference of the impedance of one coil and the second coil changed regulation above time judge steel cord exist deterioration technology.
It addition, as the technology of association, in patent documentation 2, disclose the failure detector of the rope as elevator, possess
Make the most magnetized a pair permanent magnet of rope, apply on the length direction of rope AC magnetic field magnet exciting coil and
It is arranged in the detection coil of leakage magnetic flux between a pair permanent magnet, that detection carrys out the rope after self-magnetization, based on detection coil
Output signal determine broken string position technology.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 10-111276 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2012-103177 publication
Summary of the invention
The problem that invention is to be solved
But, in the technology of patent documentation 1, according to the upper and lower First Line using the thickness direction being positioned at handrail when checking
The mode that the difference of circle and the impedance of the second coil judges, measure the handrail of object to first coil, the second coil distance not
With, so there is the problem that can not realize high SN ratio (signal-noise ratio).
It addition, in the technology of patent documentation 2, knowable to Fig. 1 of patent documentation 2 waits, if existed not by 2 magnet exciting coils
It is connected in series and uses and make mensuration object be magnetized to the problem that a pair strong permanent magnet of saturated magnetization then can not realize high SN ratio.
It addition, measure the composition produced in the case of object moves with certain speed under saturated magnetization state and detected and excitation
The composition both sides of the amplitude of the composition of the output voltage of frequency equal frequencies produce in detection coil simultaneously, so there is detection
The signal cancellation that goes out, noise increase etc., exist and be difficult to high SN than the problem of detection deterioration.
Then, the problem of the present invention is than checking the bad of the steel cord that is built in the handrail of passenger conveyors with high SN
Change.
For solving the technical scheme of problem
In order to solve above-mentioned problem, the present invention is that a kind of generation is about the steel cord in the handrail being built in passenger conveyors
The handrail inspection device of inspection data of deterioration, it is characterised in that: being provided with multiple coil groups, described coil groups includes:
Configure with bearing of trend along described handrail on the relative face of described handrail checking object in a row, produce the most reverse
The first oscillator coil of AC magnetic field and the second oscillator coil；Be positioned at described first oscillator coil and described second oscillating line
Near the centre of circle or centre, by based on the magnetic field received from described first oscillator coil and described second oscillator coil
The receiving coil that field waveform exports as described inspection data, each multiple described coil groups are checking the described handrail of object
Configure with staggering on width.Describe below about other technologies scheme.
Invention effect
In accordance with the invention it is possible to the deterioration of the steel cord being built in the handrail of passenger conveyors than inspection with high SN.
Accompanying drawing explanation
Fig. 1 is to use 2 oscillator coils and 1 receiving coil to generate the inspection about the deterioration checking object (steel cord)
The explanatory diagram of the principle of data.
Fig. 2 is the explanatory diagram that inspection object deposits the direction of the magnetic flux interlinked with receiving coil in a break situation.
Fig. 3 is the relation representing the magnetic flux φ interlinked with receiving coil in the case of Fig. 2 with the position of fracture location
Curve chart.
Fig. 4 is to represent the integrally-built block diagram that the handrail of present embodiment checks system.
Fig. 5 is the integrally-built concept map representing handrail inspection device.
Fig. 6 top is the figure of the field waveform representing that receiving coil exports.Bottom is to represent from the field waveform on top
Noise (noise) composition in 1 initial cycle has been carried out the figure of the waveform after delete processing.
Fig. 7 (a) is the top plane view of handrail.B () is that the A-A of (a) is to regarding 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 representing state when being arranged on handrail by handrail inspection device, and (a) is side view, and (b) is vertical
Body figure.
Figure 11 is the flow chart of the inspection process representing the deterioration position determining steel cord with evaluating apparatus.
Figure 12 is the waveform display example checking data.
Figure 13 is the color map display example checking data.
Figure 14 is the differentiated waveform display example checking data.
Figure 15 is the color map display example of the differentiated waveform data of Figure 14.
Detailed description of the invention
Hereinafter, for the mode (hereinafter referred to as " embodiment ") for implementing the present invention, it is described in detail with reference to the accompanying drawings.
First, with reference to Fig. 1, that illustrate present embodiment uses, use 2 oscillator coils and 1 receiving coil generation
Principle about the inspection data of the deterioration checking object (steel cord).
As it is shown in figure 1, in present embodiment, in the position relative with checking object M, at the bearing of trend checking 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)
Configure in a row as coil groups.
There is the most reverse AC magnetic field in oscillator coil (1), oscillator coil (2).
Receiving coil is positioned at the centre of oscillator coil (1) and oscillator coil (2), exports based on from oscillator coil (1) with shake
Swing the field waveform in the magnetic field that coil (2) receives as checking data.
The magnetic line of force B1, B2, the B3 occurred from oscillator coil (1) is by checking object M, but from checking that object M leakage is returned
Return oscillator coil (1).Now, the cross section being sized depending on checking object M of the magnetic line of force B1, B2, B3 of oscillator coil (1) is returned to
Amass and height h (from checking the object M distance to oscillator coil (1)).It addition, the strongest the closer to oscillator coil (1) magnetic force, so
The magnitude relationship 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 checking object M, but from checking object M
Leak and return oscillator coil (2).It addition, the magnitude relationship 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 to the positive direction of magnetic force.It addition, set oscillator coil (1) and oscillator coil
(2) intensity of the AC magnetic field occurred is equal.It addition, below, it is considered in certain moment, occur from oscillator coil (1)
Magnetic field occurs on the direction pass downwardly through therein, from the magnetic field that oscillator coil (2) occurs upwardly through therein
Direction on occur situation.
Now, the position between oscillator coil (1) and receiving coil, magnetic line of force B1 cancels out each other with magnetic line of force B13, but
Because magnetic line of force B1 higher (B1+B13 ＞ 0), so magnetic line of force residual upwards.
It addition, the position between oscillator coil (2) and receiving coil, magnetic line of force B3 cancels out each other with magnetic line of force B11, but
Because magnetic line of force B11 higher (B3+B11 ＜ 0), so downward magnetic line of force residual.
It addition, in receiving coil, magnetic line of force B2 cancels out each other with magnetic line of force B12, because magnetic line of force B2 and magnetic line of force B12
Intensity be equal (B2+B12=0), so non-retained magnetic forces line.Thus, if checking that object M normally (does not exist fracture
Deng deterioration), then receiving coil does not occur electric current.
Herein, with reference to Fig. 2, for checking that object M illustrates when there is fracture.Hereinafter, will hand over receiving coil
The magnetic-flux meter of chain is shown as φ.
As shown in Fig. 2 (a), there is fracture in the position between oscillator coil (1) and receiving coil in checking object M
Time, occur from oscillator coil (1) and by checking that the magnetic line of force in object M the most upwards spills from fracture location, so magnetic
Logical φ < 0.
It addition, as shown in Fig. 2 (b), in checking object M when the location directly below of receiving coil exists fracture, magnetic
Logical φ=0.
It addition, as shown in Fig. 2 (c), in checking object M, the position between receiving coil and oscillator coil (2) exists
During fracture, magnetic flux φ > 0.
Now, the relation of the position of the magnetic flux φ interlinked with receiving coil and fracture location is the most as shown in Figure 3.
Thus, it is possible to the change of process in time based on the electric current (field waveform) exported from receiving coil, determine inspection
Check as deterioration positions such as the fractures in M.That is, at the deterioration position checking object M, big from the field waveform of receiving coil output
Change up and down width.Therefore, based on such structure and principle, it is not necessary to use permanent magnet especially, it becomes possible to high SN than generating
Inspection data about the deterioration checking object M.
Wherein, if the intensity of AC magnetic field that occurs of oscillator coil (1) and oscillator coil (2) is equal, receiving coil
Position from their centre to one party offset time, even if checking object M normal (there is not the deteriorations such as fracture), with receiving coil
The magnetic flux φ of interlinkage also will not become 0.But, even the feelings that the position of receiving coil offsets to one party from their centre
Condition, if in the range of the amplification of electric current and the limit of process of receiving coil output, then also being able to be adjusted to oscillating line
One side of the AC magnetic field that circle (1) and oscillator coil (2) occur is more higher than the opposing party and tackles (magnetic flux φ=0).Thus, receive
Coil is not necessarily to be arranged in the strict centre of oscillator coil (1) and oscillator coil (2), it is also possible to be arranged in the attached of centre
Closely.It addition, the position of receiving coil is in the case of the skew of their centre is fraction of, though oscillator coil (1) and oscillating line
The intensity of the AC magnetic field that circle (2) occurs keeps equal (magnetic flux φ ≈ 0), it is also possible to effectively checked data.
Then, the handrail for present embodiment checks that the overall structure of system illustrates.As shown in Figure 4, handrail inspection
Look into system 1000 and include that handrail inspection device 1100, evaluating apparatus 1200, operation inputting part 1300 and display part 1400 are constituted.
Handrail inspection device 1100 generates the inspection of the deterioration about the steel cord in the handrail being built in passenger conveyors
Data.
The inspection data that evaluating apparatus 1200 performs based on receiving from handrail inspection device 1100 determine the bad of steel wire rope
The inspection changing position processes.
Operation inputting part 1300 is the information input unit such as keyboard, mouse.
Display part 1400 is LCD (the Liquid Crystal that display checks result (checking the analysis result of data) etc.
Display: liquid crystal display), CRT (Cathode Ray Tube: cathode ray tube) display etc..
Handrail inspection device 1100 possesses sensor portion 1500 (coil groups) and sensor portion 1510 (coil groups), 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 part 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) illustrate only each 2 but it also may be respectively arranged with more than 3.
About sensor portion 1500, sensor portion 1510, as representing, sensor portion 1500 is illustrated.Sensor
Portion 1500 is made up of the oscillator coil (1) (2) 1501 that AC magnetic field occurs and receiving coil 1511.Wherein, oscillator coil (1)
(2) 1501 is the oscillator coil (1) shown in Fig. 1, oscillator coil (2), below, there are the feelings of the record of ellipsis " 1501 "
Condition.As it has been described above, there is the most reverse AC magnetic field in oscillator coil (1), oscillator coil (2).It addition, receiving coil 1511 is
, below, there is the situation of the record of ellipsis " 1511 " in the receiving coil shown in Fig. 1.
Oscillator coil (1), receiving coil, oscillator coil (2), with check the object face (bottom surface) that i.e. handrail 1 is relative, edge
The bearing of trend configuration (with reference to Fig. 9) in a row of handrail 1.
Receiving coil is positioned 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 the magnetic field that circle (1) and oscillator coil (2) receive is as checking data.
As it is 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 to oscillator coil, be 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 groups, receiving coil, oscillator coil (2) 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) connect have 1 exchange generating unit 1120.The switching action carried out by switching part (1) 1110, from exchange generating unit 1120
Alternating current (electric current of such as 20kHz) flow successively through these oscillator coils (1) (2), flow through the oscillator coil of alternating current
(1) there is AC magnetic field in (2).Wherein, in order to make oscillator coil (1), oscillator coil (2) that the most reverse AC magnetic field to occur,
Such as make the coiling direction of each coil on the contrary.
There is the alternating current of assigned frequency in exchange generating unit 1120, control to flow through the moment of electric current with control portion 1140.
Specifically, in order to economize on electricity, oscillator coil (1) (2) 1501 is only being flow through to oscillator coil (1) (2) this N of 150N in control portion 1140
Time to oscillator coil, control exchange generating unit 1120 and carry out oscillation action.And then, the signal that exchange generating unit 1120 occurs
It is used as the reference signal 3100 of the detection action of time adjustment/detection section 1160.
It addition, control portion 1140 is used for controlling the same of switching part (1) 1110 and switching part (2) 1111 (switching switch)
Step signal 3101.Switching part (1) 1110 and switching part (2) 1111 can switch according to synchronizing signal 3101, by each line simultaneously
The action successively of circle group.
It addition, from this N number of receiving coil of receiving coil 1511 to receiving coil 151N 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,
This digital signal is transferred to time adjustment/detection section 1160.Wherein, by being simulated data by Analog to Digital Converter section 1150
Numerical data, process (down-sampling etc.) afterwards becomes easy.In time adjustment/detection section 1160, carry out receiving line
In the field waveform that circle detects, delete the field waveform (noise section) of the specified period after switching with switching part (2) 1111
Process (details being described with Fig. 6).
It addition, the time period of the delete processing in the field waveform of each receiving coil, correctly control in control portion 1140.
After this delete processing, time adjustment/detection section 1160 uses reference signal 3100 to carry out at all wave rectification process and filtering
Reason (process that mainly low pass filter (LPF) is carried out).Then, the numeral letter after processing with time adjustment/detection section 1160
Number, be downsampled that portion 1170 changes that (down-sampling) is the sample frequency (such as 200kHz) in Analog to Digital Converter section 1150 1000 points
The sparse data of sample frequency (such as 200Hz) of 1 degree.Thereby, it is possible to reduce the capacity that data are overall.
Data after changing with down-sampling portion 1170 are stored in storage part 1180, from data communication section 1190 as defeated
Go out signal 3200 to export.Because data volume is little, so 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 groups is illustrated.In Fig. 6, top (upper half
Part) it is the figure of the field waveform representing that receiving coil exports, bottom (the latter half) is to represent from the field waveform on top
The noise contribution (noise) in 1 initial cycle has been carried out the figure of the waveform after delete processing.
In time width T1 (such as 50 μ s (200kHz)) period in each oscillator coil (1) (2), flow through alternating current.
Then, switch the connection of each oscillator coil (1) (2) with switching part (1) 1110 (Fig. 5) successively, flow through electric current with T1 intervening sequences
Until n-th oscillator coil (1) (2) 150N.
(that is, the moment 1 with the time width in moment 2 is for the sampling time i.e. 10ms of time width T2 e.g. 100Hz degree
10ms).Time width T3 is " time width T2-time width T1 × N ", with control portion 1140 (figure during time width T3
5) carry out stopping the control of the electric current from exchange generating unit 1120 flow direction oscillation coil (1) (2).The relation of these time widths is
< < < < T3 (in Fig. 6, for the ease of mapping, the most correctly indicates their relation) to T2, T1 × N to T1.Thus, accounting for time width
During the time width T3 of the most of the time in T2, by stopping from exchange generating unit 1120 flow direction oscillation coil (1) (2)
The control of electric current can suppress to consume electric current, it is possible to realizes economize on electricity.
On the other hand, for from this N number of receiving coil of receiving coil 1511 to receiving coil 151N, shaking corresponding successively
Swing the connection in moment switching switching part (2) 1111 (Fig. 5) flowing through alternating current in coil (1) (2), to amplification/filtering part
1130 (Fig. 5) input signal.As shown in the top part of figure 6, the initial part of each field waveform 5100 has been mixed into noise.This connects
Receive noise to be because have switched, with the switching part (2) 1111 (Fig. 5) of switching receiving coil, the noise connected and produce.
Herein, for by the time adjusting function of time adjustment/detection section 1160, deletion receiving coil detects
The process of noise contribution illustrates.Oscillator coil (1) (2) sensing that the alternating current occurred by exchange generating unit 1120 flows through
The magnetic field produced, is detected by corresponding receiving coil.As it has been described above, now, receiving coil switching part (2) 1111 (Fig. 5)
Switch connection successively, so producing switching noise.Waveform 5200 after the noise delete processing of the bottom of Fig. 6 is to delete initially
1 cycle, the time width T4 in remaining 3 cycles is detected as the example of signal component.This noise delete processing is such as
Can be with the microcontroller (time adjustment/detection being equipped with CPU (Central Processing Unit: CPU)
Portion 1160) realize.
Then, before the evaluating apparatus 1200 shown in explanatory diagram 4, the structure example etc. for handrail inspection device 1100 is entered
Row explanation.
As shown in Fig. 7 (a) (b), handrail 1 is by many steel cords 3 built-in in the resin such as polyurethane or rubber 2 and resin 2
Constitute.
Then, the structure example for handrail inspection device 1100 illustrates.Fig. 8 is the end face 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 possesses main body 11, handle 12,13,2 rollers of encoder wheel
14,15,2 movable vertical rollers 16 of 2 fixed vertical rollers, 17,5 (N=5) coil groups of hinge (oscillator coil (1), connect
Take-up circle, oscillator coil (2)) as primary structure.
Main body 11 is approximately parallelepiped body shape, and upper surface is provided with SR, start button, stop button, various display
Lamp.
Handle 12 is the part that the user of this handrail inspection device 1100 is dominated by hand.
Encoder wheel 13 is the encoder measuring handrail inspection device 1100 relative to the relative movement distance of handrail 1.
It addition, encoder wheel 13 and 2 rollers 14 add up to 3 rollers play maintenance check object i.e. handrail 1 and and its
The effect of the spacing distance (such as 2mm) between relative bottom surface.Because the upper surface of handrail 1 be not perfect plane but slightly
Micro-strip has the shape of radian, so for the attitude stabilization of handrail inspection device 1100, it is optimal for using 3 rollers like this
's.
During it addition, use handrail inspection device 1100, with 2 fixed vertical rollers 15 and 2 movable vertical rollers 16 from
Both sides clip handrail 1.In the case of Gai, 2 fixed vertical rollers 15 be fixing on the main body 11, but 2 movable vertical rollers 16
Can be moved on the width of handrail 1 by 2 hinges 17, so can for the multiple handrail that width dimensions is different
Suitably clamp with 2 fixed vertical rollers 15 and 2 movable vertical rollers 16.
As it is shown in figure 9, with on the inspection object bottom surface that i.e. handrail 1 is relative, be configured with these 5 coil groups of 1ch～5ch
(oscillator coil (1), receiving coil, oscillator coil (2)).In each coil groups, oscillator coil (1), receiving coil, oscillating line
Circle (2) is in a row along the bearing of trend configuration of the length direction of handrail inspection device 1100, i.e. the inspection i.e. handrail 1 of object.
And, each leisure of these 5 coil groups of 1ch～5ch checks that on the object i.e. width of handrail 1, (each other) staggers ground
Configuration (oblique lattice configuration), thus, is built in the whole width of the steel cord 3 covered in handrail 1.
State when being arranged on handrail 1 by handrail inspection device 1100, (in Figure 10 (b), saves as shown in Figure 10 (a) (b)
Each button slightly above, the diagram of various display lamp).When checking with this handrail inspection device 1100, such as, at Figure 10
A under the state shown in () (b), the hand-held handrail inspection device of inspector 1100 makes it motionless, then make handrail 1 in the direction of extension
Sliding action.
Return Fig. 4, evaluating apparatus 1200 is illustrated.Evaluating apparatus 1200 is carried out based on from handrail inspection device
The inspection data that 1100 receive determine the computer installation that the inspection at the deterioration position of steel cord processes.Evaluating apparatus 1200 wraps
Include data input part 1210, data processing division 1220, signaling control unit 1230, output processing unit 1240, storage part 1250
Constitute with control portion 1260.It addition, in present embodiment, check that data are equivalent to the reception line from handrail inspection device 1100
Circle is to the data in all stages of the data input part 1210 of evaluating apparatus 1200.
Data input part 1210 (checks number from data communication section 1190 input/output signal of handrail inspection device 1100
According to).
Data processing division 1220 is believed based on the output sending from data input part 1210 and obtained by control portion 1260
Number (inspection data) carry out inspection process (details Figure 11 are described further below).Check that the information such as result are properly saved depositing
In storage portion 1250.
Signaling control unit 1230 (with reference to Fig. 4) is correspondingly carried out with the operation signal come from operation inputting part 1300 transmission
The control of the signal in communication with handrail inspection device 1100.
Output processing unit 1240 is carried out for suitably using the form of curve chart or table with vision on display part 1400
Upper understandable display format display checks the process of result etc..
Storage part 1250 preserves the data etc. after data processing division 1220 processes.
Control portion 1260 (with reference to Fig. 4) is by CPU (Central Processing Unit: CPU), ROM
(Read Only Memory: read only memory), RAM (Random Access Memory: random access memory) etc. are constituted,
Carry out the control of exchange and the calculation process etc. of data.
Wherein, data processing division 1220, signaling control unit 1230, output processing unit 1240 are by by storage part 1250
The program of middle preservation and data are loaded into control portion 1260, perform calculation process and realize.
Then, with reference to Figure 11, the inspection carried out for the data processing division 1220 of evaluating apparatus 1200 processes and illustrates
(also suitably with reference to Fig. 4 etc.).This inspection processes the inspection data for these 5 coil groups of 1ch～5ch (with reference to Fig. 9) and enters respectively
OK.
First, data processing division 1220 obtains the inspection data (step from handrail inspection device 1100 from storage part 1250
Rapid S1).
Then, data processing division 1220 carries out time unifying process (step S2).Time unifying processes and refers to for right
Coil groups 1ch, 3ch, 5ch and coil groups 2ch, 4ch are at the length direction of handrail inspection device 1100 (during inspection as shown in Figure 9
The bearing of trend of handrail 1) on the process that is modified of deviation.Processed by this time unifying, (or holding up with time shaft
The position of the bearing of trend of hands 1) display checks in the case of result, it is possible to make the inspection result of all of coil groups 1ch～5ch
Relative to time shaft (or position of the bearing of trend of handrail 1) alignment (with reference to Figure 12～Figure 15).
Then, data processing division 1220 carries out side-play amount adjustment process (step S3).Side-play amount adjustment processes and implies that adjustment
The process of the side-play amount (meansigma methods and the deviation of zero) in inspection data (field waveform 5100 of Fig. 6).Thus, check data
Side-play amount be zero or small in the case of, it is not necessary to carry out this step S3.
Then, data processing division 1220 width in required time (such as 100ms degree) step S5 repeatedly～step S7
Process (step S4～step S8).
Data processing division 1220 is for the inspection data of stipulated time width, it may be judged whether exist departing from reference range
Waveform values (step S5), no in the case of be judged as normal (step S6), be judged as exception (step S7) in the case of being.
When the process of step S4～step S8 is for complete inspection ED, data processing division 1220 is at display part 1400
Upper display checks result.
Then, with reference to Figure 12～Figure 15, for checking that the display example of result illustrates.
Figure 12 is the waveform display example checking result.Herein, in step S1 of Figure 11～the process of step S9, it is not necessary to
Carry out the process (can be with independently display normal, abnormal) of step S4～step S8.It addition, beginning label, end mark divide
Be not in the starting position of handrail 1, end position width paste on the whole as mark aluminium strip.
In Figure 12, it is shown that the waveform the most corresponding with coil groups 1ch～5ch.In waveform shows, the longitudinal axis is waveform values
(peak value), transverse axis is the bearing of trend position of handrail 1.Wherein, by using the measured value etc. of encoder wheel 13, it is possible to by horizontal stroke
Axle is converted to the bearing of trend position of handrail from time shaft.This conversion also is able to carry out with additive method.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 groups 2ch, it is possible to
Each detect with coil groups 2ch relative to relative moving speed and coil groups 1ch of handrail 1 based on handrail inspection device 1100
The deviation in the moment of beginning label, carries out this conversion.Conversion data alternatively, it is also possible to use these methods simultaneously, to a side
Interpolation etc. is carried out by the conversion data of the opposing party.
It addition, in fig. 12, handrail state 20 is for explanation, the most not actual displayed.It addition, P1～P6
The fracture location of the steel cord 3 in expression handrail 1.Wherein, this handrail 1 is deliberately so to arrange steel cord 3 to test with
Fracture location.
From left side during sequential observation waveform 1ch～waveform 5ch, first, in (the bearing of trend position, position of beginning label
Put.The most identical) because there is aluminium strip, so waveform 1ch～waveform 5ch changes the most up and down.It addition, for terminating
The position of labelling is also same.
Then, in the position of corresponding P1, the most upper and lower near the waveform 4ch of width position, the waveform 5ch of fracture
Variation, but the waveform 1ch～waveform 3ch away from the width position of fracture is almost unchanged.
Then, in the position of corresponding P2, the most upper and lower near the waveform 2ch of width position, the waveform 3ch of fracture
Changing, waveform 1ch, waveform 4ch that the width position of distance fracture is the most remote change compared with them the most up and down,
Waveform 5ch away from the width position of fracture is almost unchanged.
About the position of corresponding P3～P6, similarly, the waveform of the width position being more proximate to fracture changes up and down
The biggest, the waveform away from the width position of fracture is almost unchanged.
By watching such display picture, it is possible to learn the bearing of trend of the beginning label in handrail 1 and end mark
The bearing of trend position of the fracture of position and steel cord 3 and width position.
Then, with reference to Figure 13, the color map for the inspection data identical with Figure 12 shows that example illustrates.In order to
Carry out this color map to show, it is also desirable to carry out step S4 in step S1 of Figure 11～the process of step S9～step S8
(normal, abnormal information is necessary for display).
Herein, exist the waveform values departing from reference range (step S5 of Figure 11 is yes) be judged as abnormal in the case of
(step S7 of Figure 11), this waveform values be just in the case of with the first color C1 (such as red) table shown in the bottom right of Figure 13
Show, this waveform values be negative in the case of represent by the second color C2 (such as blue) shown in the bottom right of Figure 13.
It addition, there is not the waveform values (step S5 of Figure 11 is no) departing from reference range to be judged as normal situation
Under (step S6 of Figure 11), with shown in the bottom right of Figure 13 the 3rd color C3 (such as yellow) represent.It addition, the 4th color C4 is
First color C1 and the Neutral colour of the 3rd color C3, the 5th color C5 is the second color C2 and the Neutral colour of the 3rd color C3.
Wherein, Figure 13 carries out gradual change to show but it also may do not carry out gradual change and show.
Shown by the viewing such color map of Figure 13, it is possible to learn the beginning label in handrail 1 and end mark
Bearing of trend position and the bearing of trend position of fracture of steel cord 3 and width position.
Show it addition, also be able to carry out differentiated waveform as shown in figure 14.Figure 14 shows based on the situation with Figure 12 identical
Inspection data carry out differential process the waveform shown.In Figure 12, the fracture with steel cord 3 changes the most up and down
The zero crossing of waveform portion corresponding to the bearing of trend position of fracture, and in Figure 14, be not zero crossing but maximal point is corresponding
In the bearing of trend position of fracture, so the advantage with the bearing of trend position being visually more readily understood fracture.
Figure 13 is that the inspection data identical with Figure 12 carry out the figure that color map shows, equally, Figure 15 be to figure
14 identical inspection data carry out the figure that color map shows.
It addition, for Figure 12, Figure 14, it is also possible to do not distinguish display waveform 1ch～waveform 5ch, but add up with by them
1 waveform obtained shows.So, although the width position of the fracture of steel cord 3 can not be learnt, but be appreciated that fracture
Bearing of trend position, as long as so use in the case of learning the bearing of trend position of fracture the most single waveform show
Viewing visually it is prone to when showing.Show alternatively, it is also possible to carry out the color map corresponding with this cumulative 1 waveform obtained
Show.
So, according to the handrail inspection device 1100 of present embodiment, multiple make generation the most anti-on bottom surface by making
To the oscillator coil (1) of AC magnetic field, oscillator coil (2) and be positioned at the receiving coil near between which or centre in length
Configure coil groups in a row on direction to arrange with staggering on the width of steel cord 3, it is not necessary to use permanent magnet (energy
Enough correspondingly reduce size, reduce cost), it becomes possible to high SN than generating about in the handrail 1 being built in passenger conveyors
The inspection data of the deterioration of steel cord 3.Wherein, the most multiple coil groups in the way of the width covering steel cord 3 is overall at width
Degree direction on (each other) arrange with staggering.
It addition, use switching part (1) 1110 and the structure of switching part (2) 1111 by using, it is only necessary to 1 exchange produces
Portion 1120, it is possible to reduce circuit scale, it is achieved economize on electricity, low cost, densification.
It addition, by from the field waveform that multiple receiving coils respectively obtain, deleting and switch with switching part (2) 1111
After the switching noise of specified period, it is possible to improve SN ratio further.
It addition, by possessing encoder wheel 13, it is possible to measure simply, use handrail inspection device 1100 relative to holding up
The relative movement distance of hands 1.
It addition, by adding up to 3 rollers to maintain handrail 1 and handrail inspection device with encoder wheel 13 and 2 rollers 14
Spacing distance between the bottom surface of 1100, it is possible to the attitude of the handrail inspection device 1100 when making inspection becomes stable.
Process it addition, evaluating apparatus 1200 performs inspection based on the inspection data received from handrail inspection device 1100,
So can determine that the deterioration position of steel cord 3.
So far terminate the explanation of embodiment, but the mode of the present invention is not limited to this.Such as, in Figure 13 and Figure 15,
The positive waveform values that will be disengaged from reference range is set to the first color C1, will be disengaged from the negative waveform values of reference range and has been set to the
Second colors C2 but it also may they are represented by identical color.
It addition, in step S5 of Figure 11, it may be judged whether in the case of existing departing from the waveform values of reference range, it is possible to
With squared to waveform values, it may be judged whether exceed threshold value.
In addition, for concrete structure, it is possible to the most suitably change.
Symbol description
1 handrail
2 resins
3 steel cords
11 main bodys
12 handles
13 encoder wheel
14 rollers
15 fixed vertical rollers
16 movable vertical rollers
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 portions
1150 Analog to Digital Converter section
1160 times adjustment/detection section
1170 down-sampling portions
1180 storage parts
1190 data communication section
1200 evaluating apparatus
1210 data input part
1220 data processing divisions
1230 signaling control units
1240 output processing units
1250 storage parts
1260 control portions
1300 operation inputting part
1400 display parts
1500,1510 sensor portion (coil groups)
1501～150N oscillator coils (1) (2)
1511～151N receiving coils
M checks object.
Claims (7)
1. a handrail inspection device, generates the inspection number of the deterioration about the steel cord in the handrail being built in passenger conveyors
According to, it is characterised in that:
Being provided with multiple coil groups, described coil groups includes:
Configure with bearing of trend along described handrail on the relative face of described handrail checking object in a row, produce mutually
The first oscillator coil and the second oscillator coil for reverse AC magnetic field；With
Be positioned near described first oscillator coil and the centre of described second oscillator coil or centre, will be based on from described first
The reception line that the field waveform in the magnetic field that oscillator coil and described second oscillator coil receive exports as described inspection data
Circle,
Each multiple described coil groups configures on the width of described handrail checking object with staggering.
2. handrail inspection device as claimed in claim 1, it is characterised in that:
Each multiple described coil groups configures to cover on the width of described handrail checking object and is built in institute with staggering
State the whole width of described steel cord in handrail.
3. handrail inspection device as claimed in claim 1 or 2, it is characterised in that also include:
Produce the exchange generating unit of the alternating current of assigned frequency；
First switching part, it is connected with described exchange generating unit and multiple described first oscillator coil, described second oscillator coil,
So that the alternating current that described exchange generating unit produces flows successively through multiple described first oscillator coil, described second vibration respectively
The mode of coil switches over；
The second switching part being connected with multiple described receiving coils；
Amplification/the filtering part being connected with multiple described receiving coils via described second switching part；
Time adjustment/detection section, it is connected with described amplification/filtering part, uses the reference signal from described exchange generating unit
Carry out detection；With
Control portion, it is so that by including each of described first oscillator coil, described second oscillator coil and described receiving coil
The mode of described coil groups action successively, control described first switching part to multiple described first oscillator coils, described second shake
Swing switching and the switching to multiple described receiving coils of described second switching part of coil.
4. handrail inspection device as claimed in claim 3, it is characterised in that:
Described time adjustment/detection section is by from the field waveform that multiple described receiving coils respectively obtain, immediately with described
The field waveform of the specified period after the switching that the second switching part is carried out is deleted.
5. handrail inspection device as claimed in claim 1 or 2, it is characterised in that:
Also having encoder wheel, it measures the described handrail inspection device relative movement distance relative to described handrail.
6. handrail inspection device as claimed in claim 5, it is characterised in that:
Between maintaining with 3 rollers including described encoder wheel between described handrail and the described relative face of inspection object
Space from.
7. a handrail checks system, it is characterised in that including:
Handrail inspection device described in claim 1 or 2；With
Evaluating apparatus, it is based on the inspection data received from described handrail inspection device, performs to determine the bad of described steel cord
The inspection changing position processes.
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 true CN106324081A (en) | 2017-01-11 |
| CN106324081B CN106324081B (en) | 2019-08-23 |
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Family Applications (1)
| 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014889A (en) * | 2019-05-31 | 2020-12-01 | 株式会社日立大厦系统 | Metal impurity inspection device |
| CN113325066A (en) * | 2020-02-28 | 2021-08-31 | 株式会社日立大厦系统 | Wire inspection system and wire inspection device |
Families Citing this family (1)
| 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 |
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| CN113325066A (en) * | 2020-02-28 | 2021-08-31 | 株式会社日立大厦系统 | Wire inspection system and wire inspection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017013974A (en) | 2017-01-19 |
| CN106324081B (en) | 2019-08-23 |
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