CN109143403A - For calibrating the method and alignment sensor of induction type alignment sensor - Google Patents
For calibrating the method and alignment sensor of induction type alignment sensor Download PDFInfo
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- CN109143403A CN109143403A CN201810679159.9A CN201810679159A CN109143403A CN 109143403 A CN109143403 A CN 109143403A CN 201810679159 A CN201810679159 A CN 201810679159A CN 109143403 A CN109143403 A CN 109143403A
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- winding system
- milling
- alignment sensor
- coil
- printed conductor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
Abstract
It proposes a kind of for calibrating at least one transmitting coil (116) and at least one method for receiving the induction type alignment sensor of winding system (118), the transmitting coil and the reception winding system are designed on the circuit board (126a) of the alignment sensor in the form of printed conductor (128), wherein realizing the voltage U that balance is incuded in the receiving coil (112,114) for receiving winding system (118) by disconnecting described at least one calibration winding system (130) for receiving winding system (118).According to the present invention, at least one described calibration winding system (130) is disconnected in method and step (218) by means of the mechanical milling of the printed conductor (128) of at least one calibration winding system (130).
Description
Technical field
The present invention relates to a kind of senses for calibrating at least one transmitting coil and at least one reception winding system
The method for answering formula alignment sensor.In addition, the present invention relates to corresponding alignment sensors.
Background technique
For positioning the alignment sensor for being hidden in construction material, metal object at present usually using the side of induction
Method works.The spy that conductive and ferromagnetic Effect of Materials is placed in the electromagnetic coil in ambient enviroment is utilized herein
The fact that property.The variation of the response characteristic as caused by the object of metal is recorded by the reception circuit of this alignment sensor.With
This mode, such as the object of metal being enclosed in wall can come by means of the coil that one or more guides on wall
It is positioned.
Detect metal object technological difficulties be object to be positioned be applied to alignment sensor a coil or
The reaction of numerically very little in multiple coil groups, especially positioning signal.Influence for non-ferromagnetic object is especially true, example
Such as technically important copper.It can be significantly larger than which results in the inductive effect between coil and received by closed object
Generated induction in coil.The detector of method based on induction usually has and high can be captured by the receiving coil of detector
The signal arrived, the signal is in the case where the influence of not external, metal object just via the reception of alignment sensor
Circuit measuring arrives.This high " background signal " (or also referred to as " biasing ") makes it difficult to detect by being placed in alignment sensor
Very small induction variation caused by the object of neighbouring metal.
It is known from the state of the art following scheme: reducing in the case where the object of metal is not present in the form of background signal
Existing sensor signal and thus opposite signal intensity is amplified relative to background signal.Such as in document DE
There is the sensor module for induction type alignment sensor in 10 2,004 047 188 Al, realizes to by coil itself
The compensation of the background signal of induction.Here, the device of the object for positioning metal proposed has at least one emission lines
Circle and at least one reception winding system, the transmitting coil and reception winding system inductively mutually couple, wherein
The calibration of the device is especially realized the compensation of the background signal incuded by coil itself by means of switching device, described
Switching device realizes the effective the number of turns for changing and receiving winding system.
Summary of the invention
Propose a kind of induction type for calibrating at least one transmitting coil and at least one reception winding system
The method of alignment sensor, the transmitting coil and reception winding system are designed in alignment sensor in the form of printed conductor
Circuit board on, wherein by disconnect it is described receive winding system at least one calibration winding system come realize balance described
Receive the voltage U incuded in the receiving coil of winding system.According to the present invention, at least one calibration winding system is walked in method
It is disconnected in rapid by means of the mechanical milling of the printed conductor of at least one calibration winding system.
Here, based on published design on the Method And Principle for calibrating induction type positioning detector proposed, i.e.,
The reception winding system, such as receiving coil geometry be modified so that if do not had around the alignment sensor
Object to be positioned is navigated to, then by receiving the disappearance of total magnetic flux caused by winding or at least almost disappearing.The design
By known in 10 2,004 047 188 A1 of DE.
Here, the reception winding for the reception winding system being initially in the range of manufacture reduces one or more conductor loops
And/or the geometry of the layer of used conductor loop, i.e. reception winding system can change.In order to execute it is described receive around
The variation of the number of turns of group the and/or described geometry for receiving winding system, proposes a kind of method, at this according to the present invention
Method alignment winding system, i.e., especially one of alignment sensor and/or multiple reception windings in method and step by means of
The mechanical milling of the printed conductor of the corresponding winding of formation of at least one calibration winding system disconnects.Receive around
In the case where the suitable design of the conductor loop, i.e. for example one or more receiving coils organized, so feel in conducting wire loop section
Voltage and/or so the modification geometry that receives winding system are answered, so that for example may due to the manufacturing tolerance that does not comply with
Error voltage in the alignment sensor of generation can just be compensated.
It should be noted that statement " milling of printed conductor " includes the similar processing to printed conductor, wherein printing
Conducting wire is interrupted, for example by means of drilling by material removal.
The calibration to alignment sensor is realized according to the method for the present invention, wherein receiving the calibration of winding system by disconnecting
Winding system realizes balance voltage U for incuding in receiving winding.Here, calibration winding system can be by one or more pre-
First compensating module and/or the compensative winding composition of given winding length.Here, compensative winding correspondingly should be understood that it is flat
Weighing apparatus or compensative winding electric current percolation arc length, be arranged for method according to the present invention be milled and due to
Milling and realize the switching or variation between at least two, preferably m different alternate configuration schemes.By this method may be used
It is accomplished that, by the different combinations by can change wiring and milling to corresponding printed conductor, so that compensation is for example
Due to mistake installation or the background signal of the manufacturing tolerance not complied with and the alignment sensor generated, so that obtaining optimal flat
Weighing apparatus.
Therefore, a kind of particularly simple, cost advantages and however particularly efficient use can be obtained according to the present invention
In the method for accurate calibration alignment sensor according to the present invention.Furthermore, it is possible to calibrated according to the method for the present invention
Alignment sensor, the alignment sensor generate background signal as small as possible, coil, especially transmitting and receiving coil mistake
It misplaces to set and there is influence as small as possible on background signal.
Particularly, a kind of alignment sensor can be obtained in this way, which uses root after mounting
It is calibrated according to method of the invention in factory, so that the operation of optimization can be realized.
In a kind of embodiment according to the method for the present invention, in the mechanical milling of the printed conductor of calibration winding system
Institute is obtained by the way that the mechanical milling of test structure on circuit boards is set in method and step before the method and step cut
The milling depth needed.
Due to usually there is the circuit board equipped with electronic component in the manufacture of the alignment sensor of the type, so
The use of the working depth limiter of usual milling tool is not or is only limitedly feasible for the method and step of milling
's.Therefore, especially in multilayer equipped with the circuit board of component and/or printed conductor in the case where, it is necessary to especially note that borrowing
It helps milling only to process, separate the desired layer equipped with the printed conductor to milling.For this purpose, this is needed reported as precisely as possible fixed
Milling is carried out under the milling depth of justice.
However, since milling depth is placed in the milling tool being known from the state of the art from the circuit board to milling
Start to be acquired at support thereon, the tolerance of the thickness of circuit board is also included within the possible precision of milling depth.
The circuit board of the prior art usually has the tolerance in the range of up to ± 10 % about its thickness.Exemplary
2.5 mm thickness circuit board in, this corresponds to ± 250 μm of absolute tolerance.Therefore, it is also only capable of just setting milling depth
It is set to ± 250 μm.
The substrate layer point of the layer of the multilayer of the printed conductor order of magnitude usually by its thickness less than 500 μm on circuit boards
It opens.Therefore, it cannot ensure that milling tool is extend into positioned to be milled in the case where the tolerance of such as ± 250 μm of circuit board
In the printed conductor below printed conductor cut and damages its structure (in this case, the thickness of circuit board is located at its tolerance
Top in the range of, such as 2.75 mm) and/or printed conductor to milling be not completely severed it is (in this case, electric
The thickness of road plate is in the range of the lower part of its tolerance, such as 2.25 mm), so that the calibration of alignment sensor will not be carried out.
By aforementioned method steps, according to the present invention, test knot of the required milling depth by setting on circuit boards
The mechanical milling of structure come obtain and thus by the possible tolerance to the circuit board of milling consider to milling depth really
In fixed.Especially can thus obtain independent of manufacture-manufacture-that is particularly based on circuit board in tolerance be used for
The method for calibrating induction type alignment sensor.
In the manufacture of the printed conductor of alignment sensor, test structure is equally arranged on circuit board, is preferably receiving
The printed conductor close vicinity of winding system.Here, " close vicinity " is especially construed as test structure and receives winding system
Distance is less than 10 cm, preferably smaller than 5 cm, particularly preferably less than 1 cm.In addition, multiple test structures according to the present invention
It can be set on circuit boards.In one embodiment, test knot is correspondingly provided in the close vicinity of calibration winding system
Structure.
In a kind of embodiment according to the method for the present invention, test structure is implemented as circuit, wherein testing structure
It is run during executing the method and step for obtaining required milling depth by means of assessment circuit.Pass through this side
Formula, especially can maneuverable test structure can use particularly simple device and manufactured and run.Preferably, it tests
Structure be designed to include at least one printed conductor circuit.In addition, test structure may include for example for simply measuring
The resistance of especially specific potential.Due to the milling of the printed conductor of test structure, the closed circuit of circuit is disconnected, and
Change in the voltage (alternatively: being applied to ohmically electric current) of ohmically decline.By means of assessment circuit, Ke Yi
Structure is tested in advantageously observation during executing the method and step for obtaining required milling depth, and can detecte the electricity
Buckling and/or curent change.Particularly, in a kind of embodiment according to the method for the present invention, when execution is for obtaining
When the method and step of required milling depth, when by means of assessment circuit test structure on detect voltage change and/or electricity
When rheology, required milling depth is realized.
In a kind of embodiment according to the method for the present invention, in the method and step for obtaining required milling depth
Milling tool is navigated in method and step before on the position of test structure.
In a kind of embodiment according to the method for the present invention, in the method and step for obtaining required milling depth
Period sets the smallest milling depth first, and then iteratively increases milling depth until reaching required milling depth.
In this way, especially fine indexing can be realized when determining required milling depth.
In a kind of embodiment according to the method for the present invention, in the mechanical milling of the printed conductor of calibration winding system
In the method and step cut, milling cutter is located in first on the position to the printed conductor of milling of calibration winding system, and
And then by printed conductor milling to required milling depth.
Using according to the method for the present invention it is ensured that the printed conductor through milling of calibration winding system is milled completely
Cut, however underlying (others), be not milled in the subsequent printed conductor of printed conductor along milling direction.Therefore,
The especially reliable calibration to the alignment sensor of the printed conductor with long-time stable may be implemented.
The invention further relates to a kind of alignment sensor of object for positioning metal, which has at least one
A transmitting coil and at least one receive winding system, the transmitting coil and receive winding system especially inductively phase
It mutually couples and is designed in the form of printed conductor on the circuit board of alignment sensor, wherein receiving winding system at least
One calibration winding system is arranged for balancing the voltage U incuded in the receiving coil for receiving winding system, wherein at least
One calibration winding system is since the mechanical milling of the printed conductor of at least one calibration winding system is about described
Receive winding system effective the number of turns aspect and/or about it is described receive winding system be formed by face in terms of
And/or it is being balanced in terms of the geometry for receiving winding system, is especially being calibrated.
In addition, the present invention relates to a kind of alignment sensors with the test structure in circuit form.Testing structure can be with
It is attached in assessment circuit and for obtaining required milling depth according to the method for the present invention.
In a kind of embodiment of alignment sensor, at least one transmitting coil of alignment sensor connects at least one
Take-up circle by as printed coil construction on circuit boards, especially as be arranged in it is parallel to each other, height biasing plane in
Printed coil and be constructed on circuit boards.In an alternative embodiment, transmitting coil is not designed to print
Coil, and it is designed to the transmitting coil of winding, wherein at least one receiving coil and transmitting coil are disposed in and put down each other
In capable, height biasing plane.
By the way that transmitting coil and receiving coil are embodied as printed coil, it is advantageously arranged at directly flat with circuit board
In capable plane, that is to say, that abut directly against its Shangdi and be disposed on circuit board.In one embodiment, coil is by structure
It makes in plane, single layer winding geometry.Winding is received for manufacturing it is thereby achieved that will not wherein generate
The circuit of the printing of fringe cost.Furthermore, it is possible to particularly readily using according to the method for the present invention.
In a kind of embodiment of alignment sensor, at least one transmitting coil and at least one receiving coil are by each other
Coaxially construct.In one embodiment, multiple receiving coils are arranged coaxially with each other and are led in a different direction
Electricity.Here, at least one transmitting coil can be arranged in-at least relative to receiving coil-it is parallel but height bias
Plane in.
In the measuring device that the alignment sensor proposed can be used for incuding, for example for detecting wall, ceiling and ground
The positioning device of the object of metal in plate.Alternatively, alignment sensor can integrate in lathe or on lathe, for example
Boring bar tool, to allow the user of the machine safely to drill.It is drilling for example, therefore sensor can integrate
Or in tool of punchinging, or it is configured to the module that can be connect with this tool.
Detailed description of the invention
It is described below by means of embodiment shown by attached drawing and the present invention is explained in detail.Attached drawing, specification and
Claims include numerous features in combination.Professional suitably can also individually consider feature and group
At significant other combinations.Identical appended drawing reference in the accompanying drawings refers to identical element.
Wherein:
Fig. 1 shows in a schematic form the sensor geometry for the alignment sensor of the object of positioning metal according to prior art
Construction in the principle of shape；
Fig. 2 shows the embodiment of the coil arrangement of alignment sensor according to the present invention with simplified perspective view；
Fig. 3 shows the receiving coil of alignment sensor and the top view of test structure with simplified signal；
Fig. 4 shows illustrative embodiment according to the method for the present invention.
Specific embodiment
Fig. 1 is shown in the principle for the induction type alignment sensor of the object of positioning metal according to prior art
Construction.This alignment sensor has in its sensor module 10 there are three coil 12,14,16.It is attached to first transmitter
It the first transmitting coil 12 on S1, the second transmitting coil 14 being attached on second transmitter S2 and is attached on receiver E
Receiving coil 16.Each coil is here it is shown that be circular line.Three coils 12,14,16 are relative to common axis 18
It is disposed concentrically upon.Here, each coil 12,14,16 have different external dimensions, allow transmitting coil 12 with axis
The coaxial mode of line 18 is inserted into transmitting coil 14.
Two transmitting coils 12 and 14 are transmitted from device S1 and S2 and are powered with the alternating current of opposite phase.Therefore, first
Transmitting coil 12 incudes refer to opposite with the flux incuded in receiving coil 16 by the second transmitting coil 14 in receiving coil 16
To flux.If the object (not being shown specifically herein) of not external metal, receives near sensor module 10
The flux of two inductions in coil 16 compensates one another, so that receiver E is not examined in receiving coil 16 in the ideal case
Measure reception signal.The flux motivated in receiving coil 16 by each transmitting coil 12 or 14 depends on various parameters, such as
The number of turns and geometry of coil 12 or 14 and the amplitude for the electric current being fed into two transmitting coils 12 or 14 and described
The mutual phase position of electric current.
In the case where sensor module 10 of the prior art, these parameters should be finally so optimized, so that ought not deposit
In the object of metal, in the transmitting coil 12 of electric current percolation or in the case where 14, in receiving coil 16 dead flux or
Flux (described background signal) as small as possible.In the sensor module 10 according to Fig. 1, it is attached to first transmitter
The first transmitting coil 12 of S1 and the second transmitting coil 14 for being attached to second transmitter S1 are arranged in common coaxially with each other
In plane.Receiving coil 16 is disposed relative in the plane of two transmitting coils 12 and 14 biasing.
Fig. 2 shows the arrangements of sensor module 110, such as its determining in the object according to the present invention for positioning metal
As used in level sensor.There are two receiving coils 112 for the tool of sensor module 110 of alignment sensor according to fig. 2
Or 114, the receiving coil is arranged in common plane 126(coaxially with each other and is formed in Fig. 2 by X-axis 122 and Y-axis 124)
In and formed receive winding system 118.Plane 126 indicates the upside of the circuit board 126a of alignment sensor herein.It receives
The receiving coil 112 or 114 of winding system 118 has plane, single layer winding geometry, two of them receiving coil
112, it 114 is implemented on circuit board 126a in circuit (printed coil) form of printing.Receiving coil 112,114 is especially in
The form of printed conductor 128 is implemented on circuit board 126a.Transmitting coil 116 is located at along the direction of z-axis 120 with certain
The position that distance is biased relative to the common plane 126 for receiving winding system 118, the transmitting coil is equally and receiving coil
112 or receiving coil 114 be coaxially arranged.Transmitting coil 116 is equally manufactured to the back by being especially printed onto circuit board 126a
The circuit (printed coil) being made of printed conductor 128 on the surface of side.The winding 117 of transmitting coil 116 is along the z-axis direction
It is located above or below the plane 126 of circuit board 126a with distance determining, predetermined.Sensor module 110 is same
Represent the compensation sensor of induction.
In schematic diagram in Fig. 2, for better visibility, Z axis 120 is shown and is prolonged relative to X-axis 122 and Y-axis 124
It stretches.In addition, intercepting a segment in coil 112,114,116 respectively to preferably observe cross section in Fig. 2.
The winding 115 of receiving coil 114 is wound along clockwise direction in the shown embodiment, and receiving coil 112 is more
External winding 113 is wound in the counterclockwise direction.By the way that the number of turns of winding 113,115 and the size of winding radius is suitably determined,
It is achieved that if the object (not being shown specifically here) of metal is not present near alignment sensor, in sensor
The voltage incuded in two receiving coils 112,114 of the sensor module 110 of system is due to its contrary sign and just each other
It offsets.However, this compensate previously given, the position that clearly limits for being only applicable to transmitting coil 116.If such as by
Tolerance in the manufacturing process in coil 112,114,116 or in mechanical sensor installation process, transmitting coil 116
Position change relative to the position precomputed, then in receiving coil 112,114 incude caused by error electricity
Press UF。
According to the present invention, in alignment sensor, that is to say, that in shown sensor module 110, setting is received
The calibration winding system 130 of winding system 118 is incuded in the receiving coil 112,114 for receiving winding system 118 with balance
Voltage U, wherein at least one calibrate winding system 130 due to the machine of the printed conductor 128 of at least one calibration winding system 130
The milling of tool and balance, that is to say, that especially reception winding system 118 effective the number of turns be so changed and/or receive around
The geometry of group system 118 is so modified, so that if not navigating to object to be positioned near alignment sensor
Body, then the generated total magnetic flux by winding 113,115 disappears or at least almost disappears.
In addition, the test structure 132(for the milling depth needed for obtaining (referring to fig. 4) according to the method for the present invention
Referring to Fig. 3) on the surface of circuit board 126a.
The diagram of Fig. 3 simplified strongly again is for illustrating purpose according to the method for the present invention.Fig. 3 is with towards circuit
The top view of plate 126a, that is to say, that the X-Y plane 126 corresponding to Fig. 2 shown by way of signal with it is relevant around
Arrangement in the principle of the receiving coil 112,114 of group 113,115.Transmitting coil 116 is not shown in Fig. 3.In addition, test
Structure 132 is shown in FIG. 3.
Two receiving coils 112 or 114 are arranged in X-Y plane 126.Two in two receiving coils 112,114 are outer
Detection voltage is measured between portion terminal A and B, is further processed in the assessment circuit for the measuring device for being associated with alignment sensor
The detection voltage.Shown in Fig. 3, the winding 115-of the inside of receiving coil 114 exists according to the manufacture-of alignment sensor
Different position (printed conductors 128 and the outside of receiving coil 112 labeled as P1 to P8) via calibration winding system 130
Winding 113 is electrically connected.In the range of calibrating alignment sensor, the printed conductor 128 of winding system 130 is calibrated 8 positions
7 upper interruptions in (P1 to P8), to generate the reception winding system 118 of definition.For example, receiving the half of winding system 118
Diameter and the number of turns can be accordingly dimensioned such size, so that ideal, the i.e. theoretical meter of transmitting coil 116 and receiving coil 112,114
The arrangement of calculation on the position of point P1 to P4 and P6 to P8 only in the case where keeping electrical connection on the P5 of position (that is, interrupt printing
Conducting wire 128(electrical contact)) phase of voltage measured between point A and B in the case where the object of metal is not present may be implemented
Mutual compensation.However, for example in the case where realizing holding electrical connection on the P1 of position, therefore between point A and B on sum
Obtain three complete windings (winding 115) with lesser radius along clockwise direction and four has in the counterclockwise direction
The winding (winding 113) of biggish radius.In the case where keeping electrical connection on the P5 of position, then effectively obtain along up time
2.5 windings of needle and along 3.5 windings counterclockwise.Due to the voltage tool incuded in the winding 113 of receiving coil 112
Have from the different amplitude of voltage incuded in the conductor loop of receiving coil 114 and opposite symbol, be electrically connected according to what is kept
The position connect, the voltage that can be measured between point A and B change.It, can be thus real by changing position to be held
Now finely tune the compensation component for the alignment sensor device being made of three coils.
Especially in this embodiment, the effective of the receiving coil 112,114 of two opposed orientations of winding system 118 is received
The number of turns change and be matched with corresponding requirement.Therefore, in the range of according to the method for the present invention (referring to fig. 4),
Can have been cancelled or compensated by subsequent equilibrium process the transmitting coil 116 not being shown specifically in Fig. 3 location of mistake and
The following error voltage U of the inductosyn due to caused by manufacturing toleranceF。
Fig. 2 and test structure 132 shown in Fig. 3 for execute according to the method for the present invention, i.e. especially execute calibrate around
Milling depth needed for obtaining before the method and step of the mechanical milling of the printed conductor 128 of group system 130 is (referring to drawing method
Step 204).Here, test structure is by including that the circuit of printed conductor 128 forms.Printed conductor 128 connects at side (" GND ")
Ground, and its potential for being attached to " VCC " in a manner of high impedance via resistance 134 in the other side.In this embodiment, resistance
134 values with 1 k Ω to 10 k Ω.In this way, since contact position 136 passes through the printed conductor 128 to milling
It is grounded in a manner of low-impedance (potential GND), therefore is led executing for printing before obtaining the milling of required milling depth
Line 128 has the potential to disappear on contact position 136.Once printed conductor 128 is worn on milling position 138 by milling, resistance
It occupies an leading position and the potential at contact position 136 is set as VCC.Therefore, pass through the electricity on measurement contact position 136
Gesture, since the complete milling that the potential raising from GND to VCC can detecte printed conductor 128 is worn.
It should be noted that the alignment sensor of the object according to the present invention for positioning metal is not limited to as shown in the figure
Embodiment.Particularly, the reception winding system 118 of alignment sensor according to the present invention is not limited to using two reception lines
It encloses 112,114 and/or uses 8 calibration winding systems.
Fig. 4 shows illustrative embodiments according to the method for the present invention by means of method.In method and step 200
In, the test structure 132 for being used to obtain required milling depth is attached to and (is not shown specifically herein) assessment circuit first.
It is equal to applying voltage VCC(on testing structure 132: electric current) in the case where, assessment circuit is used for the electricity of the test structure 132
Contact.In addition, assessment circuit is used to detect the voltage being applied on the contact position 136 of test structure 132 (referring to Fig. 3).
In method and step 202, it then (will not be shown specifically) position that milling tool navigates to test structure 132 herein
It sets, that is to say, that be located in milling tool on the milling position 138 of the restriction of test structure 132, especially in test structure
On 132 printed conductor 128.Then, in the method and step of the mechanical milling of the printed conductor 128 of calibration winding system 130
In method and step 204 before, needed for being obtained by the mechanical milling for the test structure 132 being arranged on circuit board 126a
Milling depth.For this purpose, especially initially setting up minimum milling depth (empirical value or being determined by construction) in method and step 206.
Then, iteratively increase milling depth in method and step 208, and in method and step 210, by means of milling tool milling
The milling depth set up to now into the printed conductor 128 of test structure 132.If testing the printed conductor of structure 132
128 are worn by complete milling, that is to say, that reach required milling depth, then by means of assessment circuit, in connecing for test structure 132
Voltage change (referring to Fig. 3) is detected on touching position 136 and/or curent change (determines " to have reached required milling in the step 212
Cut depth: Yes/No ").And then, the circulation of the method and step 208,210 of iteration is exited.Then, storage is used for required milling
Cut the current setting (method and step 214) of depth.
Using present current value or it is currently used for the current setting of required milling depth, in the step 216, by milling
Tool navigates on the position to the printed conductor 128 of milling of calibration winding system 130, that is to say, that P1 to P8.Finally,
In method and step 218, printed conductor is milled into required milling depth, adds tolerance value when necessary.
Other printed conductors 128 then can use setting identical with required milling depth and execute, especially iteratively
In 8 position P1 on 7 into P8.Alternatively, this method can be again in another test structure of alignment sensor
It is performed on 132.
In this way, according to the present invention execute induction type alignment sensor calibration, wherein by disconnect receive around
At least one calibration winding system 130 of group system 118 incudes in the receiving coil for receiving winding system 118 to balance
Voltage U, wherein at least one calibrate winding system 130 in method and step by means of at least one calibration winding system 130
The mechanical milling (method and step 218) of printed conductor 128 disconnects.
Claims (10)
1. one kind is for calibrating the induction at least one transmitting coil (116) and at least one reception winding system (118)
The method of formula alignment sensor, the transmitting coil and the reception winding system are constructed in the form of printed conductor (128)
On the circuit board (126a) of the alignment sensor, wherein by disconnecting at least one described for receiving winding system (118)
Calibration winding system (130) is incuded in the receiving coil (112,114) for receiving winding system (118) to realize to balance
Voltage U, which is characterized in that it is described at least one calibration winding system (130) in method and step (218) by means of it is described extremely
Lack the mechanical milling of the printed conductor (128) of calibration winding system (130) to disconnect.
2. the method according to claim 1, wherein in the printed conductor of calibration winding system (130)
(128) in the method and step (204) before the method and step (218) of mechanical milling, required milling depth is by being set
The mechanical milling of the test structure (132) on the circuit board (126a) is set to obtain.
3. according to the method described in claim 2, it is characterized in that, the test structure (132) is implemented as circuit, wherein
Test structure (132) is during the execution of the method and step (204) for obtaining required milling depth by means of assessment
Circuit operation.
4. the method according to any one of claim 2 to 3, which is characterized in that for obtaining required milling depth
The method step (204) before method and step (202) in, milling tool is positioned to test structure (132)
On position.
5. method according to any one of claim 2 to 4, which is characterized in that for obtaining required milling depth
Method and step (204) during, set first the smallest milling depth and then iteratively improve the milling depth until
Reach required milling depth.
6. method according to any one of claim 3 to 5, which is characterized in that when by means of the assessment circuit in institute
It states in test structure (132) when detecting voltage change and/or curent change, is executing for obtaining required milling depth
Reach required milling depth during method and step (204).
7. the method according to any one of claim 2 to 6, which is characterized in that in calibration winding system (130)
In the method and step of the mechanical milling of printed conductor, milling tool is positioned in calibration winding system (130) first
To which on the position (P1-P8) of the printed conductor (128) of milling and then the printed conductor (128) is milled until required
Milling depth.
8. a kind of alignment sensor of the object for positioning metal has at least one transmitting coil (116) and at least one
A reception winding system (118), the transmitting coil and the reception winding system inductively mutually couple and are in
The form of printed conductor (128) is designed on the circuit board (126a) of the alignment sensor, it is characterised in that the reception
At least one calibration winding system (130) of winding system (118) receives connecing for winding system (118) described for balancing
The voltage U incuded in take-up circle (112,114), wherein it is described at least one calibration winding system (130) due to it is described at least
The mechanical milling of the printed conductor (128) of one calibration winding system (130) is about reception winding system (118)
The aspect of effective the number of turns and/or about it is described receive winding system (118) be formed by face in terms of and/or about
It is balanced in terms of the geometry for receiving winding system (118), is especially calibrated.
9. alignment sensor according to claim 8, it is characterised in that at least one test structure in the form of circuit
(132).
10. according to the described in any item alignment sensors of claim 8 to 9, which is characterized in that at least one described transmitting coil
(116) it is constructed on the circuit board (126a), especially at least one described receiving coil (112,114) as printed coil
It is built into the circuit board (126a) as the printed coil being disposed in plane be parallel to each other, height biasing
On.
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| Application Number | Priority Date | Filing Date | Title |
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| DE102017210943.2 | 2017-06-28 | ||
| DE102017210943.2A DE102017210943A1 (en) | 2017-06-28 | 2017-06-28 | Method for calibrating an inductive position sensor and location sensor |
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| CN109143403A true CN109143403A (en) | 2019-01-04 |
| CN109143403B CN109143403B (en) | 2023-04-21 |
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| CN201810679159.9A Active CN109143403B (en) | 2017-06-28 | 2018-06-27 | Method for calibrating an inductive positioning sensor and positioning sensor |
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| DE202004006336U1 (en) * | 2004-04-19 | 2004-07-01 | Vallon Gmbh | Handheld metal detector for use in checking persons passing through an access control point, e.g. in an airport, incorporates a test coil which can be switched across a resistance to provide a means for in-situ calibration |
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| US20160282500A1 (en) * | 2015-03-23 | 2016-09-29 | Schneider Electric USA, Inc. | Sensor and method for foreign object detection in induction electric charger |
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2017
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| GB2278199A (en) * | 1993-05-08 | 1994-11-23 | Roke Manor Research | Apparatus for detecting and estimating length of hidden elongated conductive objects |
| DE202004006336U1 (en) * | 2004-04-19 | 2004-07-01 | Vallon Gmbh | Handheld metal detector for use in checking persons passing through an access control point, e.g. in an airport, incorporates a test coil which can be switched across a resistance to provide a means for in-situ calibration |
| DE102004047188A1 (en) * | 2004-09-29 | 2006-03-30 | Robert Bosch Gmbh | Device for locating metallic objects and method for adjusting such a device |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102017210943A1 (en) | 2019-01-03 |
| CN109143403B (en) | 2023-04-21 |
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