KR101768347B1 - Detection Apparatus and method of Rotational Device in Vehicle - Google Patents
Detection Apparatus and method of Rotational Device in Vehicle Download PDFInfo
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- KR101768347B1 KR101768347B1 KR1020150187834A KR20150187834A KR101768347B1 KR 101768347 B1 KR101768347 B1 KR 101768347B1 KR 1020150187834 A KR1020150187834 A KR 1020150187834A KR 20150187834 A KR20150187834 A KR 20150187834A KR 101768347 B1 KR101768347 B1 KR 101768347B1
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- 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
- G01D5/142—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 using Hall-effect devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
-
- 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
- G01D5/12—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
- G01D5/142—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 using Hall-effect devices
- G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- 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
- G01D5/249—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 pulse code
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- 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
- G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
- G01D5/252—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels
- G01D5/2525—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts a combination of conductors or channels with magnetically controlled switches, e.g. by movement of a magnet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/04—Sensors
- F01L2820/041—Camshafts position or phase sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/04—Sensors
- F01L2820/042—Crankshafts position
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to an apparatus and a method for detecting a rotating body of a vehicle capable of detecting a rotating direction of a crank of a vehicle. A rotation detecting device for a vehicle according to an embodiment of the present invention includes a first sensor for detecting rotation of a first rotating body, a second sensor and a third sensor for detecting rotation of a second rotating body, A permanent magnet for providing a magnetic field to the first sensor, the second sensor, and the third sensor; and a rotation sensor for detecting rotation of the first rotator based on a detection signal of the first sensor, And a signal processing unit for detecting the rotation of the second rotating body based on the detection signal of the first rotating body. Here, the first sensor, the second sensor, and the third sensor are disposed on the same circuit board.
Description
The present invention relates to an apparatus and method for detecting a rotating body of a vehicle, and more particularly, to an apparatus and method for detecting a rotating body of a vehicle capable of detecting the rotating direction of a crank.
The cam sensor is arranged in a configuration for accurately detecting the position of the cam of the vehicle, and the cam sensor measures the position of the piston relative to the top dead center. Based on the sensing signal from the cam sensor, an electronic control unit (ECU) determines engine operating conditions to control the fuel injection timing for each cylinder.
The flywheel of the vehicle is fastened to the crankshaft, and the rotational force of the flywheel actuates the crankshaft and the cylinder of the engine associated therewith. When the vehicle starts, the starter motor operates the flywheel to cause the cylinder of the engine to flow, and the fuel injection of each cylinder is controlled by the ECU to execute the stroke of the engine. There may occur a case where the engine is not normally staged according to the ambient temperature, and the engine may be started by the reverse rotation of the flywheel. In order to detect the rotation of the conventional crank, a crank sensor is provided, but the reverse operation of the crank wheel is not detected. If the flywheel operates in the reverse direction, a system fault may occur and a crank sensor is required to detect it.
The inventors of the present application recognize the above-mentioned problems and propose the following technical problems.
In order to solve the above-described problems, the present invention provides an apparatus and method for detecting a rotating body of a vehicle, which can detect rotation of a cam or rotation of a crank with a single sensor device by integrating a cam sensor and a crank sensor into one sensor As a technical task.
It is another object of the present invention to provide a vehicle rotation detecting device capable of detecting not only a rotational position of a cam or a crank but also a rotational direction of the crank by integrating the cam sensor and the crank sensor into one sensor device and a driving method thereof .
Other features and advantages of the invention will be set forth in the description which follows, or may be obvious to those skilled in the art from the description and the claims.
According to an aspect of the present invention, there is provided an apparatus for detecting a rotating body of a vehicle, comprising: a first sensor for detecting rotation of a first rotating body; a second sensor for detecting rotation of a second rotating body; A third sensor, a permanent magnet for providing a magnetic field to the first sensor, the second sensor, and the third sensor; and a rotation sensor for detecting rotation of the first rotator based on a detection signal of the first sensor, 2 sensor and a signal processing unit for detecting the rotation of the second rotator based on the detection signals of the third sensor. Here, the first sensor, the second sensor, and the third sensor are disposed on the same circuit board.
In the rotating body detection device for a vehicle according to the embodiment of the present invention, the second sensor and the third sensor are the same kind of sensors. The first sensor is a sensor of a different type from the second sensor and the third sensor.
In the rotating body detection device for a vehicle according to the embodiment of the present invention, the first sensor is an Hall sensor, and the second sensor and the third sensor are magnetoresistive sensors.
The rotating body detecting device of the vehicle according to the embodiment of the present invention operates the first sensor, the second sensor and the third sensor when detecting the rotating direction of the second rotating body. The signal processing unit detects the rotation direction of the second rotating body based on the detection signal of the first sensor, the detection signal of the second sensor, and the detection signal of the third sensor.
The signal processing unit of the vehicle rotation detecting apparatus according to the embodiment of the present invention confirms the zero crossing rising edge of the difference signal corresponding to the difference between the detection signal of the second sensor and the detection signal of the third sensor. The rotation direction of the second rotating body is detected based on the slope of the detection signal of the first sensor corresponding to the zero crossing rising edge of the difference signal.
The signal processing unit of the vehicle rotating body detecting apparatus according to the embodiment of the present invention determines that the second rotating body rotates in the forward direction when the slope of the detection signal of the first sensor is positive (+).
The signal processing unit of the vehicle rotating body detecting apparatus according to the embodiment of the present invention determines that the second rotating body rotates in the reverse direction when the slope of the detection signal of the first sensor is negative (-).
The signal processing unit of the vehicle rotation detecting apparatus according to the embodiment of the present invention outputs the position signal of the first rotating body to an electronic control unit (ECU).
The signal processing unit of the vehicle rotation detecting apparatus according to the embodiment of the present invention outputs the first position signal when the second rotator rotates in the forward direction to an electronic control unit (ECU). Then, the second position signal when the second rotator rotates in the reverse direction is outputted to the ECU. Here, the first position signal and the second position signal are outputted differently from each other.
In the rotating body detection device for a vehicle according to the embodiment of the present invention, the first sensor is disposed between the second sensor and the third sensor.
A method for detecting a rotating body of a vehicle according to an embodiment of the present invention includes detecting rotation of a first rotating body using a first one of a plurality of sensors disposed on the same circuit board, And detecting rotation of the second rotating body using a third sensor. A position signal of the first rotating body is generated based on the detection signal of the first sensor or a position signal of the second rotating body is detected based on the detection signal of the second sensor and the second detection signal .
The method of detecting a rotating body of a vehicle according to the embodiment of the present invention operates the first sensor, the second sensor and the third sensor when detecting the rotational direction of the second rotating body. The rotation direction of the second rotating body is detected based on the detection signal of the first sensor, the detection signal of the second sensor, and the detection signal of the third sensor.
The method for detecting the rotating body of the vehicle according to the embodiment of the present invention confirms the zero crossing rising edge of the difference signal corresponding to the difference between the detection signal of the second sensor and the detection signal of the third sensor. The rotation direction of the second rotating body is detected based on the slope of the detection signal of the first sensor corresponding to the zero crossing rising edge of the difference signal.
In the method of detecting the rotating body of the vehicle according to the embodiment of the present invention, when the slope of the detection signal of the first sensor is positive (+), it is determined that the second rotating body rotates in the forward direction.
Method of Detecting Rotor of Vehicle According to an Embodiment of the Present Invention If the slope of the detection signal of the first sensor is negative (-), it is determined that the second rotating body rotates in the reverse direction.
A method for detecting a rotating body of a vehicle according to an embodiment of the present invention detects the rotational position of one of a plurality of rotating bodies disposed in a vehicle by selectively using different types of sensors disposed on a single circuit board. The rotation direction of one of the plurality of rotators is detected using all of the different types of sensors.
The rotational body detection method of the vehicle according to the embodiment of the present invention detects the rotational position of the cam of the vehicle by using one hall sensor. Then, the rotational position of the crank of the vehicle is detected using two magnetoresistive sensors. The rotational direction of the crank is detected using the one Hall sensor and two magnetoresistive sensors.
An apparatus and method for detecting a rotating body of a vehicle according to an embodiment of the present invention can integrate a cam sensor and a crank sensor into one sensor to detect rotation of a cam or rotation of a crank with one sensor device.
Further, the apparatus and method for detecting the rotation of the vehicle according to the embodiment of the present invention can detect not only the rotation position of the cam or the crank but also the rotation direction of the crank by integrating the cam sensor and the crank sensor into one sensor device.
In addition, other features and advantages of the present invention may be newly understood through embodiments of the present invention.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing an apparatus for detecting a rotating body of a vehicle according to an embodiment of the present invention; FIG.
2 is a diagram showing a method of detecting rotation of a cam with a rotating body detecting device of a vehicle according to an embodiment of the present invention.
3 is a view showing a method of detecting rotation of a crank by a rotating body detection device of a vehicle according to an embodiment of the present invention.
4 is a diagram showing a method of detecting forward rotation of a crank by a rotating body detection device of a vehicle according to an embodiment of the present invention.
5 is a diagram showing a method of detecting the backward rotation of the crank by the rotating body detection device of the vehicle according to the embodiment of the present invention.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.
In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.
Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.
If any part is referred to as being "on" another part, it may be directly on the other part or may be accompanied by another part therebetween. In contrast, when a section is referred to as being "directly above" another section, no other section is involved.
The terms first, second and third, etc. are used to describe various portions, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.
Terms indicating relative space such as "below "," above ", and the like may be used to more easily describe the relationship to other portions of a portion shown in the figures. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain parts that are described as being "below" other parts are described as being "above " other parts. Thus, an exemplary term "below" includes both up and down directions. The device can be rotated by 90 degrees or rotated at different angles, and terms indicating relative space are interpreted accordingly.
Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The ECU disposed in the vehicle determines the timing of injecting the fuel into each of the plurality of cylinders based on the sensing data input from the cam sensor so that the piston position of each of the plurality of cylinders constituted in the engine must be accurately detected. Further, it is necessary to detect not only the crank rotation position but also the forward rotation and the reverse rotation of the crank, thereby preventing a system error. To this end, the present invention proposes an apparatus and method for detecting a rotating body of a vehicle that detects a rotating position and a rotating direction of a rotating body (for example, a cam and a crank) of the vehicle.
A rotating body detection device for a vehicle according to the present invention is characterized in that different types of sensors arranged on a circuit board are disposed and selectively use one of the rotation sensors . Here, the rotational direction of one of the plurality of rotators is detected using all of the different types of sensors.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing an apparatus for detecting a rotating body of a vehicle according to an embodiment of the present invention; FIG.
1, a vehicle rotating
The
The
The magnetic field generated in the
The
In order to detect the rotational position and the rotational direction of the crank, the first and second
If the distance between the
A first width from the first
The
Here, the
The position signal of the
2 is a diagram showing a method of detecting rotation of a cam with a rotating body detecting device of a vehicle according to an embodiment of the present invention.
2, when the
The
Here, the switching reference value is obtained by dividing the
When the detection signal (signal 2) of the
3 is a view showing a method of detecting rotation of a crank by a rotating body detection device of a vehicle according to an embodiment of the present invention.
3, based on the detection signal (signal 1) of the
When the
On the other hand, when the
The output signal (signal 1) of the
The
4 is a diagram showing a method of detecting forward rotation of a crank by a rotating body detection device of a vehicle according to an embodiment of the present invention.
Referring to FIG. 4, the
The
Then, a zero crossing rising edge of the difference signal (signal 1-3) is confirmed. Based on the slope of the detection signal (signal 2) of the
Specifically, the sign (+, -) of the slope of the detection signal (signal 2) of the
5 is a diagram showing a method of detecting the backward rotation of the crank by the rotating body detection device of the vehicle according to the embodiment of the present invention.
5, the
The
Then, a zero crossing rising edge of the difference signal (signal 1-3) is confirmed. Based on the slope of the detection signal (signal 2) of the
Specifically, the sign (+, -) of the slope of the detection signal (signal 2) of the
The
The first position signal and the second position signal have a pulse signal synchronized with a zero crossing rising edge of the difference signal. By outputting the first width W1 of the pulse signal included in the first position signal shown in FIG. 4 and the second width W2 of the pulse signal included in the second position signal shown in FIG. 5 differently from each other , So that the electronic control unit (ECU) can know whether the vehicle's rotating body (for example, crank) rotates in the forward direction or in the reverse direction. That is, since the pulse widths W1 and W2 of the first position signal and the second position signal are different from each other, the ECU determines whether the rotating body (for example, a crank) of the vehicle rotates in a forward direction It is possible to know whether it is rotating or not.
An apparatus and method for detecting a rotating body of a vehicle according to an embodiment of the present invention can integrate a cam sensor and a crank sensor into one sensor to detect rotation of a cam or rotation of a crank with one sensor device. Further, the apparatus and method for detecting the rotation of the vehicle according to the embodiment of the present invention can detect not only the rotation position of the cam or the crank but also the rotation direction of the crank by integrating the cam sensor and the crank sensor into one sensor device.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. Only. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
100: Rotor detecting device
110: hall sensor
120: first magnetoresistive sensor
130: second magnetoresistive sensor
140: Signal processor
150: permanent magnet
160: Wheel
162: Wheel valley
164: tooth of a wheel
200: Electronic control unit (ECU)
Claims (17)
A second sensor and a third sensor for detecting the rotation of the second rotating body;
A permanent magnet for providing a magnetic field to the first sensor, the second sensor and the third sensor; And
A signal processor for detecting the rotation of the first rotating body based on the detection signal of the first sensor and for detecting the rotation of the second rotating body based on the detection signals of the second sensor and the third sensor Including,
Wherein the first sensor, the second sensor, and the third sensor are disposed on the same circuit board,
The first sensor, the second sensor, and the third sensor are operated when the rotational direction of the second rotating body is detected,
The signal processing unit,
Detecting a rotation direction of the second rotating body based on a detection signal of the first sensor, a detection signal of the second sensor, and a detection signal of the third sensor,
Wherein the zero crossing rising edge of the difference signal corresponding to the difference between the detection signal of the second sensor and the detection signal of the third sensor is checked and the zero crossing rising edge of the detection signal of the first sensor corresponding to the zero crossing rising edge of the difference signal And detects the rotational direction of the second rotating body based on the inclination.
The second sensor and the third sensor are sensors of the same kind,
Wherein the first sensor is a sensor of a different type from the second sensor and the third sensor.
Wherein the first sensor is an Hall sensor, and the second sensor and the third sensor are magnetoresistive sensors.
And determines that the second rotating body rotates in the forward direction if the slope of the detection signal of the first sensor is positive (+).
And determines that the second rotating body rotates in the reverse direction if the slope of the detection signal of the first sensor is negative (-).
And outputs a position signal of the first rotating body to an electronic control unit (ECU).
A first position signal when the second rotary member rotates in the forward direction is output to an electronic control unit (ECU)
And outputting a second position signal when the second rotary member rotates in the reverse direction to the ECU,
And outputs the first position signal and the second position signal differently from each other.
And the first sensor is disposed between the second sensor and the third sensor.
A position sensor for detecting a position of the first rotating body based on a detection signal of the first sensor or a position signal of the second rotating body based on a detection signal of the second sensor and a detection signal of the third sensor The method comprising:
Wherein the control unit operates the first sensor, the second sensor, and the third sensor when the rotational direction of the second rotating body is detected, and when the difference between the detection signal of the second sensor and the detection signal of the third sensor Detecting a zero-crossing rising edge of a signal and detecting a rotational direction of the second rotational body based on a slope of a detection signal of the first sensor corresponding to a zero crossing rising edge of the difference signal .
And determining that the second rotating body rotates in the forward direction if the slope of the detection signal of the first sensor is positive (+).
And determining that the second rotating body rotates in the reverse direction if the slope of the detection signal of the first sensor is negative (-).
Detecting rotation directions of one of the plurality of rotors by using all of the different kinds of sensors,
A rotational position of the cam of the vehicle is detected using one Hall sensor,
The rotational position of the crank of the vehicle is detected using two magnetoresistive sensors,
Detecting the rotational direction of the crank using the one hall sensor and the two magnetoresistive sensors,
Wherein the zero crossing rising edge of the difference signal corresponding to the difference between the detection signals of the two magnetoresistive sensors is checked and based on the slope of the detection signal of the hall sensor corresponding to the zero crossing rising edge of the difference signal, A method of detecting a rotating body of a vehicle that detects a rotating direction.
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