KR101768347B1 - Detection Apparatus and method of Rotational Device in Vehicle - Google Patents

Detection Apparatus and method of Rotational Device in Vehicle Download PDF

Info

Publication number
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
Authority
KR
South Korea
Prior art keywords
sensor
signal
rotating body
detecting
detection signal
Prior art date
Application number
KR1020150187834A
Other languages
Korean (ko)
Other versions
KR20170077676A (en
Inventor
이승태
Original Assignee
주식회사 현대케피코
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 현대케피코 filed Critical 주식회사 현대케피코
Priority to KR1020150187834A priority Critical patent/KR101768347B1/en
Publication of KR20170077676A publication Critical patent/KR20170077676A/en
Application granted granted Critical
Publication of KR101768347B1 publication Critical patent/KR101768347B1/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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

Landscapes

  • 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

TECHNICAL FIELD [0001] The present invention relates to a rotating body detection apparatus and method for a vehicle,

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.

Korea Registered Patent No .: 10-0648458 (Engine reverse rotation detection device)

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 body detecting apparatus 100 includes a Hall sensor 110, a first magneto resistive sensor 120, a second magneto resistive sensor 130, A signal processor 140, and a permanent magnet 150.

The hall sensor 110, the first magnetoresistive sensor 120, and the second magnetoresistive sensor 130 are disposed on the same circuit board. Here, the hall sensor 110 is disposed between the first magnetoresistive sensor 120 and the second magnetoresistive sensor 130.

The hall sensor 110 is a sensor for detecting the rotation of the first rotator (e.g., a cam) among rotors of the vehicle. The first magnetoresistive sensor 120 and the second magnetoresistive sensor 130 are sensors for detecting the rotation of the second rotating body (for example, a crank) among the rotating bodies of the vehicle. Particularly, when detecting the rotational direction of the second rotating body (e.g., a crank), the hall sensor 110, the first magnetoresistive sensor 120, and the second magnetoresistive sensor 130 are both used.

The magnetic field generated in the permanent magnet 150 is supplied to the Hall sensor 110, the first magnetoresistive sensor 120 and the second magnetoresistive sensor 130 and the hall sensor 110, the first magnetoresistive sensor 120 And the second magnetoresistive sensor 130 generate a voltage proportional to the intensity of the magnetic field (current intensity).

The Hall sensor 110 of the present invention is a sensor that senses a magnetic field change amount of a magnetic body by using a Hall effect and can detect the position of the cam by using the detection signal of the hall sensor 110. [ The Hall sensor 110 may be disposed between the first magnetoresistive sensor 120 and the second magnetoresistive sensor 130. However, the present invention is not limited thereto, and there is no restriction on the position where the hall sensor 110 is disposed on the circuit board of the rotating body detection device 100 of the vehicle.

In order to detect the rotational position and the rotational direction of the crank, the first and second magnetoresistive sensors 120 and 130 are disposed at regular intervals, and the change in accordance with the rotation of the crank is controlled by a voltage And outputs it.

If the distance between the first magnetoresistive sensor 120 and the second magnetoresistive sensor 130 is wider than the width of the tooth 164 of the wheel 160 or the valley of the wheel 160, There may be a problem in detecting the rotational position (rotational angle and number of rotations) of the cam (cam or crank). therefore,

A first width from the first magneto resistive sensor 120 to the second magneto resistive sensor 130 is set to a valley or a wheel of the wheel 160 in order to accurately detect the rotational position of the wheel 160 The hall sensor 110, and the second magnetoresistive sensor 130 are arranged so that the second magnetoresistive sensor 120, the hall sensor 110, and the second magnetoresistive sensor 130 are smaller than the second width of the tooth 164 of the rotor 160. However, the present invention is not limited to this, and the first width from the first magneto resistive sensor 120 to the second magneto resistive sensor 130 and the valley 164 of the wheel 160 or the wheel 160 the hall sensor 110, and the second magnetoresistive sensor 130 may be disposed so that the second widths of the first magnetoresistive sensor 120, the tooth, and the tooth are the same.

The signal processing unit 140 amplifies the detection signals input from the hall sensor 110, the first magneto resistive sensor 120, and the second magneto resistive sensor 130. Then, a position signal of the cam is generated on the basis of the detection signal of the Hall sensor 110. The position signal of the crank is generated on the basis of the detection signal of the first magnetoresistive sensor 120 and the detection signal of the second magnetoresistive sensor 130. [

Here, the signal processing unit 140 detects not only a position signal according to the rotation of the crank but also whether the crank rotates in a forward direction or a reverse direction, thereby generating a position signal including information on the rotational direction of the crank. At this time, the rotation direction of the crank is detected based on the detection signal of the Hall sensor 110, the detection signal of the first magnetoresistive sensor 120, and the detection signal of the second magnetoresistive sensor 130.

The position signal of the wheel 160 generated in the signal processing unit 140 is supplied to the ECU 200. The ECU 200 controls the position of the wheel 160 in accordance with the position signal of the wheel 160 and the direction of rotation, Determine the timing and control the fuel injector.

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 wheel 160 of the rotating body (cam / crank) is rotated, the current when the valley of the wheel 160 is positioned to correspond to the hall sensor 110 and the current when the wheel 160 The tooth current 164 changes, and this current is converted into a voltage. The rotational position of the wheel 160 can be detected through the voltage change of the hall sensor 110 by the rotation of the wheel 160. [ The voltage generated by the Hall sensor 110 is supplied to the signal processing unit 140 as a detection signal.

The signal processing unit 140 compares the detection signal signal 2 of the hall sensor 110 with the switching reference value zero when detecting the rotational position of the wheel 160 through the detection signal of the hall sensor 110 . If the detection signal (signal 2) of the hall sensor 110 is smaller than the switching reference value, it is determined that the trough 162 of the wheel is positioned to correspond to the hall sensor 110. On the contrary, if the detection signal (signal 2) of the hall sensor 110 is larger than the switching reference value, it is determined that the wheel tooth 164 is positioned to correspond to the hall sensor 110.

Here, the switching reference value is obtained by dividing the valley 162 of the wheel and the wheel tooth 164, and determining a reference value for detecting that the valley 164 of the wheel and the valley 162 of the wheel are switched by the rotation of the cam to be. The first voltage value due to the magnetic field when the hall sensor 110 is positioned to correspond to the valleys 162 of the wheel is smaller than the switching reference value. On the other hand, the second voltage value due to the magnetic field when the hall sensor 110 is positioned to correspond to the tooth 164 of the wheel is larger than the switching reference value. In this way, the rotation position of the cam can be detected by comparing the detection signal (signal 2) of the hall sensor 110 with the switching reference value.

When the detection signal (signal 2) of the hall sensor 110 passes the switching reference value, a change occurs in the output signal. It is optional to generate the output signal high or low when the detection signal (signal 2) is below the switching reference value.

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 first magnetoresistive sensor 120 and the detection signal (signal 3) of the second magnetoresistive sensor 130, the rotation of the vehicle (for example, As shown in Fig.

When the first magnetoresistive sensor 120 is positioned so as to correspond to the wheel teeth 164, the output signal signal 1 of the first magnetoresistive sensor 120 is set to a high value relative to the reference value zero I have. On the other hand, when the second magnetoresistive sensor 130 is positioned so as to correspond to the wheel teeth 164, the output signal signal 3 of the second magnetoresistive sensor 130 is low in comparison with the reference value zero, .

On the other hand, when the first magnetoresistive sensor 120 is located so as to correspond to the valleys 162 of the wheel, the output signal signal 1 of the first magnetoresistive sensor 120 is low ) Value. On the other hand, when the second magnetoresistive sensor 130 is located so as to correspond to the valleys 162 of the wheel, the output signal signal 3 of the second magnetoresistive sensor 130 is high, .

The output signal (signal 1) of the first magnetoresistive sensor 120 and the output signal (signal 1) of the second magnetoresistive sensor 130 at the boundary point, that is, the edge portion, between the valley 162 of the wheel and the tooth 164 (signal 3) has a zero value. In other words, the output signal (signal 1) of the first magnetoresistive sensor 120 and the output signal (signal 3) of the second magnetoresistive sensor 130 are set to have a maximum value and a minimum value And outputs a linearly varying voltage value.

The signal processing unit 140 generates a difference signal signal 1-3 corresponding to a difference between the detection signal signal 1 of the first magneto resistive sensor 120 and the detection signal signal 3 of the second magneto resistive sensor 130, . Then, a position signal having a pulse signal synchronized with the zero crossing rising edge of the difference signal is generated. That is, by counting the pulse signal synchronized with the zero-crossing rising edge of the difference signal, it is possible to know how much the rotational body (for example, the crank) of the vehicle has rotated and the position of the rotational body (e.g., crank) Can be detected.

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 Hall sensor 110, the first magnetoresistive sensor 120, and the third magnetoresistive sensor 130 are both disposed in order to detect the rotational direction of the rotating body (e.g., a crank) Activate. The signal processing unit 140 receives the detection signal signal 2 of the hall sensor 110, the detection signal signal 1 of the first magneto resistive sensor 120, and the detection signal signal 3) of the vehicle body (for example, a crank).

The detection signal signal 1 of the first magnetostrictive sensor 120 and the detection signal signal 3 of the second magnetostrictive sensor 130 are detected in order to detect the rotational direction of the rotating body (e.g., crank) (Signal 1 - 3) corresponding to the difference between the two signals.

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 hall sensor 110 corresponding to the zero crossing rising edge of the difference signal (signal 1-3), the rotation direction of the rotating body (e.g., crank) .

Specifically, the sign (+, -) of the slope of the detection signal (signal 2) of the hall sensor 110 corresponding to the zero crossing rising edge of the difference signal (signal 1-3) is checked. Here, if the positive slope of the detection signal signal 1 of the Hall sensor 110 is positive, it is determined that the rotating body (for example, a crank) of the vehicle rotates in the forward direction.

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 hall sensor 110, the first magnetoresistive sensor 120, and the third magnetoresistive sensor 130 are all disposed in order to detect the direction of rotation of the vehicle's rotating body (e.g., a crank) Activate. The signal processing unit 140 receives the detection signal signal 2 of the hall sensor 110, the detection signal signal 1 of the first magneto resistive sensor 120, and the detection signal signal 3) of the vehicle body (for example, a crank).

The detection signal signal 1 of the first magnetostrictive sensor 120 and the detection signal signal 3 of the second magnetostrictive sensor 130 are detected in order to detect the rotational direction of the rotating body (e.g., crank) (Signal 1 - 3) corresponding to the difference between the two signals.

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 hall sensor 110 corresponding to the zero crossing rising edge of the difference signal (signal 1-3), the rotation direction of the rotating body (e.g., crank) .

Specifically, the sign (+, -) of the slope of the detection signal (signal 2) of the hall sensor 110 corresponding to the zero crossing rising edge of the difference signal (signal 1-3) is checked. Here, if the detection signal signal 1 of the hall sensor 110 is a negative slope (-), it is determined that the rotating body (for example, a crank) of the vehicle rotates in the reverse direction.

The signal processing unit 140 outputs a position signal corresponding to the rotation of the vehicle's rotating body (for example, a cam or a crank) to an electronic control unit (ECU). Further, the first position signal when the rotating body (for example, a crank) of the vehicle rotates in the normal direction is outputted to an ECU (electronic control unit), and the rotating body (for example, a crank) And outputs the second position signal to an electronic control unit (ECU). Here, the first position signal shown in FIG. 4 and the second position signal shown in FIG. 5 are outputted differently.

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 first sensor for detecting a rotation of the first rotating member;
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 method according to claim 1,
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. 3. The method of claim 2,
Wherein the first sensor is an Hall sensor, and the second sensor and the third sensor are magnetoresistive sensors. delete delete The signal processing apparatus according to claim 1,
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 (+). The signal processing apparatus according to claim 1,
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 (-). The signal processing apparatus according to claim 1,
And outputs a position signal of the first rotating body to an electronic control unit (ECU). The signal processing apparatus according to claim 1,
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. The method according to claim 1,
And the first sensor is disposed between the second sensor and the third sensor. The rotation of the first rotating body is detected using a first one of the plurality of sensors disposed on the same circuit board or the rotation of the second rotating body is detected using the second and third sensors of the plurality of sensors Detecting; And
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 . delete delete 12. The method of claim 11,
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 (+). 12. The method of claim 11,
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 positions of one of the plurality of rotors disposed in the vehicle by selectively using different types of sensors disposed on one circuit board,
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. delete
KR1020150187834A 2015-12-28 2015-12-28 Detection Apparatus and method of Rotational Device in Vehicle KR101768347B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150187834A KR101768347B1 (en) 2015-12-28 2015-12-28 Detection Apparatus and method of Rotational Device in Vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150187834A KR101768347B1 (en) 2015-12-28 2015-12-28 Detection Apparatus and method of Rotational Device in Vehicle

Publications (2)

Publication Number Publication Date
KR20170077676A KR20170077676A (en) 2017-07-06
KR101768347B1 true KR101768347B1 (en) 2017-08-14

Family

ID=59354499

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150187834A KR101768347B1 (en) 2015-12-28 2015-12-28 Detection Apparatus and method of Rotational Device in Vehicle

Country Status (1)

Country Link
KR (1) KR101768347B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102536972B1 (en) * 2020-01-17 2023-05-26 주식회사 일진글로벌 Wheel bearing provided with wheel speed sensor having a plurality of sensing units

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006038773A (en) * 2004-07-29 2006-02-09 Nippon Soken Inc Device for detecting rotation angle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006038773A (en) * 2004-07-29 2006-02-09 Nippon Soken Inc Device for detecting rotation angle

Also Published As

Publication number Publication date
KR20170077676A (en) 2017-07-06

Similar Documents

Publication Publication Date Title
JP4797721B2 (en) Rotation angle detector
US6212783B1 (en) Non-contact system for detecting an angle of rotation
CN107532529B (en) Method and apparatus for detecting the reverse rotation of internal combustion engine
US8656762B2 (en) Method for detecting a rotation angle
US7436172B2 (en) Angular speed detecting device using dual angular position signals to reduce noise
US11054435B2 (en) Method and device for processing a signal produced by a sensor for detecting the rotation of a rotating target
US10401194B2 (en) Sensor for determining at least one rotation characteristic of a rotating element
KR20070032356A (en) Magnetic encoder
US10704884B2 (en) Sensing system for sensing a position of a gear shaft
KR101768347B1 (en) Detection Apparatus and method of Rotational Device in Vehicle
KR20200020955A (en) Rotational speed sensor device
SE522243C2 (en) Device for internal combustion engines
US7323864B2 (en) Absolute angular position sensor on 360 of a rotating element
US6172500B1 (en) Target design for geartooth sensor with minimal number of unique segments combined in nonrepeating fashion
US10352798B2 (en) Angular rotation sensor system
US20080295803A1 (en) Camshaft wheel for determining startup engine angle and machine using same
JP2007513343A (en) Device for obtaining angular position and rotational speed of rotating member
KR101822722B1 (en) Detection Device and Method of Vehicle Cam Position
JP2004198425A (en) Device for detecting rotational angle of rotatable element
JP4591034B2 (en) Rotation angle detector
KR101921822B1 (en) Detecting apparatus and starting apparatus
CN110678637B (en) Apparatus and method for reporting changes in orientation of a signal sensing wheel
JP2006047228A (en) Rotation angle detecting device
CN104895673B (en) Sensor wheel and device and method for detecting the position of an internal combustion engine
JP2014227892A (en) Crank angle sensor, crank angle detection device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E90F Notification of reason for final refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant