CN105547142A - Sensor assembly for detecting rotational angles of a rotating component - Google Patents
Sensor assembly for detecting rotational angles of a rotating component Download PDFInfo
- Publication number
- CN105547142A CN105547142A CN201510887377.8A CN201510887377A CN105547142A CN 105547142 A CN105547142 A CN 105547142A CN 201510887377 A CN201510887377 A CN 201510887377A CN 105547142 A CN105547142 A CN 105547142A
- Authority
- CN
- China
- Prior art keywords
- frequency
- signal
- measured value
- sensor module
- oscillatory circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0215—Determination of steering angle by measuring on the steering column
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
- G01D5/04—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means using levers; using cams; using gearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/202—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by movable a non-ferromagnetic conductive element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
- G01D5/2452—Incremental encoders incorporating two or more tracks having an (n, n+1, ...) relationship
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/20—Detecting rotary movement
- G01D2205/26—Details of encoders or position sensors specially adapted to detect rotation beyond a full turn of 360°, e.g. multi-rotation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to a sensor assembly for detecting rotational angles of a rotating component. The sensor assembly comprises a first measurement value transducer (10) which is circumferentially coupled with the rotating component(3) with a first predetermined transmission ratio, and a second measurement value transducer (20) which is circumferentially coupled with the rotating component (3)with a second predetermined transmission ratio. The first measurement value transducer (10) is combined with a first measurement value receiver (30) to produce a first angle information ([alpha]1), and the second measurement value transducer (20) is combined with a second measurement value receiver(40) to produce a second angle information ([alpha]2), wherein the two angle information is evaluated and is used for determining the current rotation angle ([alpha]) of the rotating component (3).According to the invention, the first angle information ([alpha]1) is converted into a first frequency signal, the second angle ([alpha]2)is converted into a second frequency signal by an evaluation and control unit (50), and the two frequency signals produce an output signal, wherein the output signal represents the current rotational angle([alpha]) of the rotating component(3).
Description
Technical field
The present invention relates to a kind of sensor module for detecting the anglec of rotation at the rotating member place especially in vehicle of the type according to independent claims 1.
Background technology
In known steering angle sensor, in order to determine the rotation number of deflecting roller (Lenkrad), contactlessly by magnetic field sensor detection counter wheel.This system has such shortcoming: must provide quiescent current when lighting a fire and turning off, so as when light a fire turn off identifiable design deflecting roller rotation.When lastingly not using vehicle, this causes the accumulator of emptying vehicle undesirably.If do not provide such quiescent current, then no longer can determine steering angle clearly when deflecting roller rotates when lighting a fire shutoff or interrupting accumulator.
New steered wheel angle measuring system with two angular transducers provides a kind of improvement project, and these two angular transducers work according to the cursor principle (Noniusprinzip) of modification and no longer have the shortcoming providing quiescent current.
Therefore, such as file DE19506938A1 discloses a kind of method and apparatus of the angle for measuring rotating object.At this, this rotating object is in circumference place and at least two other rotating object actings in conjunction.Rotating object in addition is such as implemented as gear, and its angle position is determined by two sensors.Then the angle position of rotating object can be determined by the angle position so determined of these two additional rotating objects.In order to clear and definite conclusion can be drawn, need all three rotating objects or rather gear there is the number of teeth or ratio of gear respectively that determine.The method and device such as can be used for the steering angle determining motor vehicle.Described measuring principle can be applicable to the angular transducer of any type, such as optical sensor, Magnetic Sensor, capacitance type sensor, inductance type transducer or resistance sensor.Here, this other rotating object works as measured value transmitter, and the sensor of correspondence works as measured value receiver.
Summary of the invention
According to of the present invention there is the feature of independent claims 1 at the sensor module of the anglec of rotation at the rotating member place especially in vehicle, there is this advantage for detecting by contrast: simply and rapidly can assess signal for determining the current anglec of rotation by the angle information of at least two measured value transmitters being converted to corresponding frequency signal.In addition, for assessing this frequency signal, the parts existed in vehicle can be used.Preferably, the differing from and it can be used as vernier signal (Noniussignal) to use of two frequencies of forming frequency signal during assessing.Even if so this vernier signal clearly states the position of rotating member through too much rotating.The formation of difference is such as undertaken by the mixing of frequency signal and/or counting.
According to the embodiment of the sensor module for detecting the anglec of rotation at rotating member place of the present invention such as can be used as steering angle sensor for determine vehicle steering angle and/or in Industry Control.
Embodiments of the present invention provide a kind of sensor module for detecting the anglec of rotation at the rotating member place especially in vehicle.At this, the first measured value transmitter sentences the first predetermined speed ratio and rotating member is coupled at circumference, and the second measured value transmitter sentences the second predetermined speed ratio and rotating member is coupled at circumference.First measured value transmitter and the first measured value receiver are in conjunction with generation first angle information, and the second measured value transmitter and the second measured value receiver are in conjunction with generation second angle information, these two angle informations can the evaluated current anglec of rotation for determining rotating member.According to the present invention, assessment and control module convert the first angle information to first frequency signal and convert the second angle information to second frequency signal and produce output signal, the current anglec of rotation of this output signal representative rotating member by these two frequency signals.
Term " frequency signal " represents different signals below.Therefore, such as all frequency signal can be called as with the numerical value of the output signal sinusoidal or rather of the oscillator of the hunting of frequency of regulation or the consequent rectangular signal with same frequency or the numeral showing this oscillation frequency or meter reading.
Assessment and control module can be regarded as circuit or electrical equipment at this, such as opertaing device, the sensor signal of its process or assessment detection.Assessment and control module can have at least one interface, and this interface can the mode of hardware and/or software construct.When constructing in hardware, interface such as can be a part of so-called system ASIC, and it comprises the difference in functionality of assessment and control module.But it is also possible that interface be oneself, integrated commutation circuit or be made up of discrete structural detail at least in part.When constructing with software mode, interface can be software module, and it is such as present on microcontroller except other software modules.Also advantageously with the computer program of program code, it is stored on machine-readable carrier (such as semiconductor memory, harddisk memory or optical memory), and when being implemented this program by assessment and control module for performing assessment.
The sensor module for detecting the anglec of rotation at the rotating member place especially in vehicle illustrated in independent claims 1 advantageously can be improved by the measure mentioned in the dependent claims and improvement project.
Particularly advantageously, measured value receiver produces the angle information respectively as inductance change, and this angle information converts frequency signal by assessing to control module.
In a kind of favourable design proposal of sensor module according to the present invention, measured value transmitter can have the disk shaped base of the metal covering with at least one conduction respectively, and measured value receiver can have at least one face formula detecting coil respectively.At this, the metal covering of at least one conduction can according to the inductance of at least one detecting coil of coverage impact correspondence.In addition, at least one face formula detecting coil can form the part that the frequency with the oscillatory circuit of predetermined intermediate frequency is determined.At this, through the rotation of the measured value transmitter of correspondence, in predetermined Measurement bandwidth, the inductance change of face formula detecting coil can change the intermediate frequency of corresponding oscillatory circuit.Preferably, oscillatory circuit is corresponding is implemented as LR oscillator.Thus, first then angle information convert inductance change to and then convert frequency change to.The intermediate frequency of corresponding oscillatory circuit is when measured value transmitter moves between 0 and 360 ° with the change of the Measurement bandwidth of positive/negative half, and wherein this Measurement bandwidth is typically significantly less than intermediate frequency.
In another favourable design proposal of sensor module according to the present invention, the first oscillatory circuit with first surface formula detecting coil can have the first intermediate frequency, the second oscillatory circuit with second formula detecting coil can have the second intermediate frequency, they can be so different from the first intermediate frequency, make the frequency range of oscillatory circuit can not be overlapping in predetermined Measurement bandwidth.Sign change or the zero passage (Nulldurchgang) of output signal or differential signal can be avoided thus in an advantageous manner.
In another favourable design proposal of sensor module according to the present invention, the current intermediate frequency that evaluation circuits can receive oscillatory circuit is as first frequency signal and second frequency signal and by mixing and/or calculating the difference on the frequency of determining these two frequency signals and it can be used as output signal to export.At this, evaluation circuits can in analog (analog) mix oscillatory circuit frequency signal, use low-pass filter filter and to the signal-count after low-pass filtering.Then the signal of counting can export as output signal by evaluation circuits.Alternatively, evaluation circuits can via the frequency signal of at least one analog/digital converter by the frequency signal digitizing of oscillatory circuit and after hybrid digital, use low-pass filter to filter and to the signal-count after low-pass filtering.At this, the signal of counting also can export as output signal by evaluation circuits.As another alternatives, evaluation circuits convert the frequency signal of oscillatory circuit to rectangular signal by threshold switch and the corresponding counter that utilizes to frequency counting.Then evaluation circuits can become the difference frequency of two counters and it can be used as output signal to export by digital terrain.In the embodiment that a kind of abnormal cost is suitable, the frequency signal of oscillatory circuit to be converted to rectangular signal by threshold switch, the second rectangular signal is supplied to trigger (Flip-Flop) as clock signal as input signal by the first rectangular signal by evaluation circuits, makes trigger can the difference frequency generation of two rectangular signals.Then the detectable output at trigger of evaluation circuits difference frequency and it can be used as output signal export.The vibration of output slowly of trigger such as can be detected by microcontroller, the clock frequency work that it can be little, because counter self is only with difference frequency change slowly.
Show embodiments of the invention in the accompanying drawings and in the following description it be described in detail.Reference numeral identical in accompanying drawing represents the parts or element of implementing identical or similar function.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the embodiment according to the sensor module for detecting the anglec of rotation at rotating member place of the present invention.
Fig. 2 shows the schematic frame circuit diagram according to sensor module of the present invention in Fig. 1.
Fig. 3 shows the feature line chart of the angle information that the sensor module according to the present invention in Fig. 1 and 2 produces.
Embodiment
As visible from Fig. 1 to Fig. 3, embodiment shown by the sensor module 1 for detecting the anglec of rotation α at rotating member 3 place through too much rotating of the present invention comprises: the first measured value transmitter 10, and it sentences the first predetermined speed ratio and rotating member 3 is coupled at circumference; With the second measured value transmitter 20, it sentences the second predetermined speed ratio and rotating member 3 is coupled at circumference.At this, the first measured value transmitter 10 and the first measured value receiver 30 are in conjunction with generation first angle information α 1, and the second measured value transmitter 20 and the second measured value receiver 40 are in conjunction with generation second angle information α 2.Then this two angle information α 1, α 2 can be assessed for the current anglec of rotation α determining rotating member 3.According to the present invention, assessment and control module 50 convert the first angle information α 1 to first frequency signal f1, and convert the second angle information α 2 to second frequency signal f2 and produce output signal fN, the current anglec of rotation α of this output signal representative rotating member 3 by these two frequency signals f1, f2.
In the embodiment illustrated, the sensor module 1 for detecting the anglec of rotation at rotating member 3 place according to the present invention makes for determining vehicle as steering angle sensor steering angle.Self-evident, also can be used in Industry Control at the sensor module 1 of the anglec of rotation at rotating member 3 place for detecting according to of the present invention of alternative embodiment.
As being also shown in from Fig. 1, rotating member 3 is implemented as the gear with matrix 5 and main ring gear 7 (it has first number of teeth).Alternatively, rotating member 3 such as can be axle, and it is coupled with the gear with main ring gear.Two measured value transmitters 10,20 are implemented as gear equally, and wherein the first measured value transmitter 10 has the matrix 12 with the first ring gear 14, and the second measured value transmitter 20 has the matrix 22 with the second ring gear 24.The number of teeth of ring gear 7,14,24 is different.Therefore, main ring gear 7 has such as 42 teeth, and the first ring gear 14 has such as 26 teeth, and the second ring gear 24 has such as 28 teeth.As being also shown in from Fig. 1 and Fig. 2, the rotary motion α of rotating member 3 is transformed on two measured value transmitters 10,20.Corresponding angle information α 1, the α 2 within the scope of 0 to 360 ° of two measured value transmitters 10,20 are converted to corresponding frequency signal f1, f2 by measured value receiver 30,40, and this frequency signal such as represents the position of the oscillation frequency of oscillator and the measured value transmitter 10,20 according to correspondence respectively.Assessment and control module 50 are produced by frequency signal f1, f2 or calculate output signal fN, though its through rotating of rotating member 3 more turn be also clear and definite.Many turns of figure 3 illustrates through rotating member 3 are rotated in the change of angle information α 1 in the scope of 0 to 1440 °, α 2.
In the embodiment illustrated, carry out by eddy effect the anglec of rotation detecting rotating member 3.As being also shown in from Fig. 1, the disk shaped base 12,22 of measured value transmitter 10,20 respectively has spirality
the metal covering 16,26 of conduction.Measured value receiver 30,40 respectively has face formula detecting coil 32,42, its on the circuit board be not shown specifically with predetermined pitch arrangement on corresponding measured value transmitter 10,20 or under.
At this, the metal covering 16,26 of conduction is by the inductance of eddy effect according to the detecting coil 32,42 of coverage impact correspondence.Corresponding face formula detecting coil 32,42 is arranged about the metal covering 16,26 of correspondence like this, make coverage have maximal value at current rotation angle α 1, the α 2 of relevant measured value transmitter 10,20 when being 0 °, and when being 180 °, there is minimum value at current rotation angle α 1, α 2.When current rotation angle α 1, the α 2 of relevant measured value transmitter 10,20 are 0 °, in the illustrated embodiment, the complete coverage rate formula detecting coil 32,42 of metal covering 16,26 of conduction.Trend zero is covered when rotation angle is 180 °.By eddy effect, the inductance change of corresponding detecting coil 32,42, makes inductance value reappear the relevant position of measured value transmitter 10,20 within the scope of 0 to 360 ° clearly.In the embodiment illustrated, face formula detecting coil 32,42 forms respectively and has predetermined intermediate frequency f0
1, f0
2the part determined of the frequency of oscillatory circuit 52,54.Through the rotation of corresponding measured value transmitter 20,30, in predetermined Measurement bandwidth, the inductance change of face formula detecting coil 32,42 changes the intermediate frequency f0 of corresponding oscillatory circuit 52,54
1, f0
2.Preferably, oscillatory circuit 52,54 is implemented as LR oscillator respectively.Thus, first then angle information α 1, α 2 are converted into inductance change and are then converted into frequency change.
As being also shown in from Fig. 2, in the embodiment illustrated, as assessment and control module 50 part enforcement, with the first oscillatory circuit 52 of first surface formula detecting coil 32, there is the first intermediate frequency f0
1, and as assessment and control module 50 part enforcement, with the second oscillatory circuit 54 of second formula detecting coil 42, there is the second intermediate frequency f0
2, itself and the first intermediate frequency f0
1difference like this, makes the frequency range of oscillatory circuit 52,54 not overlapping in predetermined Measurement bandwidth.Assessment and control module 50 comprise evaluation circuits 56, and it receives the current intermediate frequency f0 of oscillatory circuit 52,54
1, f0
2as first frequency signal and second frequency signal f1, f2, and determine the difference on the frequency of these two frequency signals f1, f2 by mixing and/counting and it can be used as output signal fN to export.
The low-pass filter that evaluation circuits 56 such as can mix frequency signal f1, the f2 of oscillatory circuit 52,54 in analog, use is not shown specifically filters and to the signal-count after low-pass filtering.Then evaluation circuits 56 exports the signal of counting as output signal fN.Alternatively, frequency signal f1, the f2 of the analog/digital converter that can not be shown specifically via at least one of evaluation circuits 56 by frequency signal f1, f2 digitizing of oscillatory circuit 52,54 and after hybrid digital, use low-pass filter filter and to the signal-count after low-pass filtering.Then evaluation circuits 56 exports the signal of counting as output signal fN.
As other assessment possibility, evaluation circuits 56 can convert frequency signal f1, f2 of oscillatory circuit 52,54 to rectangular signal via unshowned threshold switch and respectively with unshowned counter to frequency f 1, f2 counting.Then evaluation circuits 56 digitally form the difference frequency of these two counters and the numerical value exporting this numeral as output signal fN.Alternatively, evaluation circuits 56 can convert frequency signal f1, f2 of oscillatory circuit 52,54 to rectangular signal via threshold switch, and will such as represent the input signal of the first rectangular signal as trigger place of first frequency signal f1, this trigger is preferably implemented as d type flip flop.The second rectangular signal such as representing second frequency signal f2 can be used as clock signal and is supplied to trigger.Trigger is with the difference frequency generation of these two rectangular signals thus, and wherein evaluation circuits 56 detects the difference frequency at the output of trigger and it can be used as output signal fN to export.Then the output slowly detecting trigger by microcontroller is vibrated, this microcontroller be assessment and control module 50 a part and can be little clock frequency work because counter itself only changes with difference frequency slowly.This illustrates a kind of advantageous particularly embodiment suitable with cost.
Claims (10)
1. one kind for detecting the sensor module (1) of rotating member (3) anglec of rotation through too much rotating (α) especially in vehicle, this sensor module has: the first measured value transmitter (10), and it sentences the first predetermined speed ratio and described rotating member (3) is coupled at circumference, with the second measured value transmitter (20), it sentences the second predetermined speed ratio and described rotating member (3) is coupled at circumference, wherein said first measured value transmitter (10) and the first measured value receiver (30) are in conjunction with generation first angle information (α 1), and described second measured value transmitter (20) and the second measured value receiver (40) are in conjunction with generation second angle information (α 2), these two angle informations can the evaluated current anglec of rotation (α) for determining described rotating member (3), it is characterized in that, assessment and control module (50) convert described first angle information (α 1) to first frequency signal (f1) and convert described second angle information (α 2) to second frequency signal (f2), and by two frequency signal (f1, f2) output signal (fN) is produced, the current anglec of rotation (α) of rotating member (3) described in this output signal representative.
2. sensor module according to claim 1, it is characterized in that, described measured value receiver (30,40) produces the angle information (α 1, α 2) respectively as inductance change, and this angle information converts frequency signal (f1, f2) to by described assessment and control module (50).
3. sensor module according to claim 1 and 2, it is characterized in that, described measured value transmitter (10,20) has the plate-shaped base body (12,22) of the metal covering (16,26) with at least one conduction respectively, and described measured value receiver (30,40) has at least one face formula detecting coil (32,42) respectively, the metal covering (16,26) of at least one conduction wherein said affects the inductance of corresponding at least one detecting coil (32,42) according to coverage.
4. sensor module according to claim 3, is characterized in that, described at least one face formula detecting coil (32,42) formation has predetermined intermediate frequency (f0
1, f0
2) the part determined of the frequency of oscillatory circuit (52,54), wherein pass through the rotation of corresponding measured value transmitter (20,30), in predetermined Measurement bandwidth, the inductance change of described formula detecting coil (32,42) changes the intermediate frequency (f0 of corresponding oscillatory circuit (52,54)
1, f0
2).
5. sensor module according to claim 4, is characterized in that, the first oscillatory circuit (52) with first surface formula detecting coil (32) has the first intermediate frequency (f0
1), and with second oscillatory circuit (54) of second formula detecting coil (42), there is the second intermediate frequency (f0
2), this second intermediate frequency and described first intermediate frequency (f0
1) difference be, the frequency range of described oscillatory circuit (52,54) is not overlapping in predetermined Measurement bandwidth.
6. the sensor module according to claim 5 or 6, is characterized in that, evaluation circuits (56) receives the current intermediate frequency (f0 of described oscillatory circuit (52,54)
1, f0
2) as first frequency signal and second frequency signal (f1, f2) and by mixing and/or counting the difference on the frequency of determining two frequency signals (f1, f2) and this difference on the frequency is exported as output signal (fN).
7. sensor module according to claim 6, it is characterized in that, described evaluation circuits (56) mix in analog described oscillatory circuit (52,54) frequency signal (f1, f2), utilize low-pass filter filter and to the signal-count after low-pass filtering, wherein said evaluation circuits (56) using counting signal as output signal (fN) export.
8. sensor module according to claim 6, it is characterized in that, the frequency signal (f1, f2) of described evaluation circuits (56) by frequency signal (f1, f2) digitizing of described oscillatory circuit (52,54) and after hybrid digital, low-pass filter is utilized to filter and to the signal-count after low-pass filtering, the signal of counting exports as output signal (fN) by wherein said evaluation circuits (56).
9. sensor module according to claim 6, it is characterized in that, described evaluation circuits (56) converts the frequency signal (f1, f2) of described oscillatory circuit (52,54) to rectangular signal by threshold switch and utilizes counter to frequency (f1, f2) counting respectively, wherein said evaluation circuits (56) is digitally formed two counters difference frequency and using difference frequency as output signal (fN) output.
10. sensor module according to claim 6, it is characterized in that, the frequency signal (f1, f2) of described oscillatory circuit (52,54) to be converted to rectangular signal by threshold switch, the second rectangular signal is supplied to trigger as clock signal as input signal by the first rectangular signal by described evaluation circuits (56), make described trigger with the difference frequency generation of two rectangular signals, wherein said evaluation circuits (56) detects the difference frequency at the output of described trigger and is exported as output signal (fN) by difference frequency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014220465.8 | 2014-10-09 | ||
| DE102014220465.8A DE102014220465A1 (en) | 2014-10-09 | 2014-10-09 | Sensor arrangement for detecting rotational angles on a rotating component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105547142A true CN105547142A (en) | 2016-05-04 |
| CN105547142B CN105547142B (en) | 2019-06-04 |
Family
ID=55587846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510887377.8A Active CN105547142B (en) | 2014-10-09 | 2015-10-08 | For detecting the sensor module of the rotation angle at rotating member |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105547142B (en) |
| DE (1) | DE102014220465A1 (en) |
| FR (1) | FR3027104B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260835A (en) * | 2019-06-21 | 2019-09-20 | 天津理工大学 | A kind of method and device using intrinsic frequency measurement included-angle-changeable angle |
| CN110869709A (en) * | 2017-05-12 | 2020-03-06 | 德州仪器公司 | Method and apparatus to determine the position of a rotatable shaft of an electric machine |
| CN112444193A (en) * | 2019-08-30 | 2021-03-05 | Tdk-迈克纳斯有限责任公司 | Rotation angle measuring method and rotation angle measuring circuit |
| CN113167596A (en) * | 2018-12-13 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Sensor unit with at least one gear formed by a printed circuit board |
| CN114391085A (en) * | 2019-10-10 | 2022-04-22 | 舍弗勒技术股份两合公司 | Sensor device for detecting rotational angle position of rotatable shaft, and steering device for vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016118266A1 (en) | 2016-09-27 | 2018-03-29 | Methode Electronics Malta Ltd. | Contactless fluid level sensor |
| DE102018132098A1 (en) | 2018-12-13 | 2020-06-18 | Thyssenkrupp Ag | Electronic circuit board |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225419A (en) * | 1999-02-27 | 1999-08-11 | 钟克雄 | Piston type compressor |
| EP1225419A2 (en) * | 2001-01-18 | 2002-07-24 | Niles Parts Co., Ltd. | Rotational angle measuring apparatus |
| US20050114075A1 (en) * | 2003-11-11 | 2005-05-26 | Hyundai Mobis Co., Ltd. | Method for measuring the absolute steering angle of steering shaft for vehicle |
| US20050137768A1 (en) * | 2003-12-23 | 2005-06-23 | Hyundai Mobis Co., Ltd. | Method for measuring absolute steering angle of steering shaft for vehicle |
| US20070229062A1 (en) * | 2006-03-31 | 2007-10-04 | Niles Co., Ltd. | Rotational angel detector |
| EP1849683A1 (en) * | 2006-04-27 | 2007-10-31 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Rotational angle detector |
| CN100464157C (en) * | 2005-11-07 | 2009-02-25 | 株式会社东海理化电机制作所 | Rotational angle detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19506938A1 (en) | 1995-02-28 | 1996-08-29 | Bosch Gmbh Robert | Method and device for measuring the angle of a rotatable body |
| DE102011005066A1 (en) * | 2011-03-03 | 2012-09-06 | Robert Bosch Gmbh | sensor arrangement |
-
2014
- 2014-10-09 DE DE102014220465.8A patent/DE102014220465A1/en active Pending
-
2015
- 2015-10-08 FR FR1559575A patent/FR3027104B1/en active Active
- 2015-10-08 CN CN201510887377.8A patent/CN105547142B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225419A (en) * | 1999-02-27 | 1999-08-11 | 钟克雄 | Piston type compressor |
| EP1225419A2 (en) * | 2001-01-18 | 2002-07-24 | Niles Parts Co., Ltd. | Rotational angle measuring apparatus |
| US20050114075A1 (en) * | 2003-11-11 | 2005-05-26 | Hyundai Mobis Co., Ltd. | Method for measuring the absolute steering angle of steering shaft for vehicle |
| US20050137768A1 (en) * | 2003-12-23 | 2005-06-23 | Hyundai Mobis Co., Ltd. | Method for measuring absolute steering angle of steering shaft for vehicle |
| CN100464157C (en) * | 2005-11-07 | 2009-02-25 | 株式会社东海理化电机制作所 | Rotational angle detector |
| US20070229062A1 (en) * | 2006-03-31 | 2007-10-04 | Niles Co., Ltd. | Rotational angel detector |
| EP1849683A1 (en) * | 2006-04-27 | 2007-10-31 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Rotational angle detector |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869709A (en) * | 2017-05-12 | 2020-03-06 | 德州仪器公司 | Method and apparatus to determine the position of a rotatable shaft of an electric machine |
| CN110869709B (en) * | 2017-05-12 | 2022-01-21 | 德州仪器公司 | Method and apparatus to determine the position of a rotatable shaft of an electric machine |
| CN113167596A (en) * | 2018-12-13 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Sensor unit with at least one gear formed by a printed circuit board |
| CN110260835A (en) * | 2019-06-21 | 2019-09-20 | 天津理工大学 | A kind of method and device using intrinsic frequency measurement included-angle-changeable angle |
| CN110260835B (en) * | 2019-06-21 | 2021-03-16 | 天津理工大学 | Method and device for measuring variable included angle by using natural frequency |
| CN112444193A (en) * | 2019-08-30 | 2021-03-05 | Tdk-迈克纳斯有限责任公司 | Rotation angle measuring method and rotation angle measuring circuit |
| CN112444193B (en) * | 2019-08-30 | 2022-06-28 | Tdk-迈克纳斯有限责任公司 | Rotation angle measuring method and rotation angle measuring circuit |
| CN114391085A (en) * | 2019-10-10 | 2022-04-22 | 舍弗勒技术股份两合公司 | Sensor device for detecting rotational angle position of rotatable shaft, and steering device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105547142B (en) | 2019-06-04 |
| FR3027104A1 (en) | 2016-04-15 |
| DE102014220465A1 (en) | 2016-04-14 |
| FR3027104B1 (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105547142A (en) | Sensor assembly for detecting rotational angles of a rotating component | |
| US8680847B2 (en) | Semiconductor chip and method for generating pulse edges, assigned synchronously to the movement of a mechanical part | |
| US7830278B2 (en) | Sensor arrangement for the precise detection of relative movements between an encoder and a sensor | |
| CN101832789B (en) | Absolute magnetic positioner | |
| CN107850618B (en) | Method and device for operating a rotational speed sensor, rotational speed sensor arrangement | |
| US6498474B1 (en) | Rotational velocity and direction sensing system | |
| CN106152932B (en) | A kind of rotating angle measurement apparatus and measurement method | |
| US20160202089A1 (en) | Position sensor device to determine a position of a moving device | |
| CN106052724B (en) | A kind of robot, rotary measurement device and method | |
| AU1962800A (en) | Device and method for detecting the relative position of a rotatable body | |
| US20170160101A1 (en) | Sensor Arrangement for Detecting Rotational Angles on a Rotating Component in a Vehicle | |
| CN110887975A (en) | Apparatus and method for transmitting and receiving rotational speed information | |
| CN103282750B (en) | Cubing analysis method | |
| JP5893360B2 (en) | Monitoring unit and method for monitoring a position signal of an incremental position measuring mechanism | |
| CN106796117A (en) | Sensor for determining at least one rotational characteristic of rotating element | |
| CN104570142B (en) | Demodulation method of gravity gradient measuring signals of gravity gradiometer | |
| CN103954799A (en) | Magnetic rotation speed sensor self-checking device and system and method thereof | |
| CN104011991A (en) | Method for determining the absolute position of a linear actuator | |
| US10684144B2 (en) | Position measuring device and method for operating a position measuring device | |
| CN204165994U (en) | A kind ofly measure rotating speed and the device that turns to and the engineering machinery with it | |
| CN210014751U (en) | Measuring device for detecting rotation angle of shaft | |
| CN105823412B (en) | Contactless rotary angle transmitter | |
| CN100480973C (en) | Method and apparatus for detecting position of movable device | |
| CN100504306C (en) | AMR sensor element for angle measurement | |
| JP2005061964A (en) | Rotation angle sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |