KR20170080809A - Apparatus for measuring deformation of tire - Google Patents
Apparatus for measuring deformation of tire Download PDFInfo
- Publication number
- KR20170080809A KR20170080809A KR1020150189909A KR20150189909A KR20170080809A KR 20170080809 A KR20170080809 A KR 20170080809A KR 1020150189909 A KR1020150189909 A KR 1020150189909A KR 20150189909 A KR20150189909 A KR 20150189909A KR 20170080809 A KR20170080809 A KR 20170080809A
- Authority
- KR
- South Korea
- Prior art keywords
- deformation amount
- tire
- deformation
- amount measuring
- unit
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
- B60C23/064—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle comprising tyre mounted deformation sensors, e.g. to determine road contact area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C99/00—Subject matter not provided for in other groups of this subclass
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- 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
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C2019/004—Tyre sensors other than for detecting tyre pressure
Abstract
The present invention relates to a tire deformation amount measuring apparatus comprising a deformation amount measuring section for measuring a deformation amount of a tire having a plurality of deformation amount measuring sensors provided on a tire and a deformation amount calculating section for receiving the deformation amount measuring data from the deformation amount measuring section, Wherein the deformation amount measuring unit comprises at least three deformation amount measuring sensors for the direction of deformation of the deformation amount measuring sensor, the deformation amount measuring sensor being disposed in a direction parallel to the running direction of the tire, and a deformation amount measuring sensor Wherein the deformation amount calculating unit calculates the deformation amount measuring position and the rotating direction using the data obtained from the running direction deformation amount measuring sensor and the lateral deformation amount measuring sensor, Construct to calculate the deformation from the part Relates to a tire strain measuring device, characterized in that the tire deformation measuring device in accordance with the present invention it is possible to detect the amount of deformation of the tire to accurately predict the sensor measurement position and direction of rotation.
Description
The present invention relates to a tire deformation measuring apparatus, and more particularly, to a tire deformation measuring apparatus comprising a tire deformation detecting apparatus comprising a tire deformation measuring sensor and a lateral deformation measuring sensor, To a deformation measuring apparatus.
It is necessary to accurately measure the behavior of the tire by measuring the amount of deformation by measurement of the tire because the deformation amount distribution of the circumference of the tread portion of the tire mounted on the running vehicle has a very important influence on the tire performance.
In this connection, there have been proposed a number of techniques for evaluating the behavior of a tire, abnormal wear, road surface condition, and grounding length by attaching a sensor in the tread of the tire. However, since the data is collected from a part of the rotating tire, there is a limit to the evaluation of the part where the sensor is not located near the ground or the ground. That is, the sensor signal which can give only one information per rotation has a limitation in that the information of the control device is insufficient for the vehicle having a rapid change in the emergency.
In order to overcome this limitation, a method of attaching a plurality of sensors in the direction of rotation of the tire has been attempted. However, as the number of sensors linearly increases, the number of channels increases and additional hardware is required. There is a problem that the cost is increased.
Also, even if a plurality of sensors are applied to one channel and an evaluation system is constructed, there is a limitation that the tire can not know the position of the sensor because it continues to rotate during operation.
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a method and apparatus for detecting a deformation amount of a tire And to provide a deformation measuring device for a tire.
It is another object of the present invention to provide a tire deformation measuring apparatus capable of drastically reducing a calculation amount and a data storage amount by analyzing deformation amount measurement data signals of a plurality of sensors installed on a tire using one receiver of a deformation amount calculating unit.
According to an aspect of the present invention,
1. A tire deformation amount measuring device comprising a deformation amount measuring portion for measuring a deformation amount of a tire having a plurality of deformation amount measuring sensors provided on a tire and a deformation amount calculating portion for calculating a deformation amount of the tire by receiving deformation amount measuring data from the deformation amount measuring portion, The deformation amount measuring unit may include three or more running direction deformation amount measuring sensors provided in the longitudinal direction of the deformation amount measuring sensor in a direction parallel to the running direction of the tire and one or more lateral direction deformation amount measuring sensors arranged in the longitudinal direction of the deformation amount measuring sensor in the tire width direction Wherein the deformation amount calculating unit calculates a deformation amount measuring position and a rotating direction using the data obtained from the traveling direction deformation amount measuring sensor and the lateral deformation amount measuring sensor, that is configured to calculate the It relates to a tire strain measuring device as ranging.
The deformation amount measuring unit may include a deformation amount measuring sensor including a strain gage and a Wheatstone bridge circuit. A signal processing unit for processing the data measured by the deformation amount measuring sensor to generate a pulse signal; A transmission unit for transmitting the deformation amount measurement data processed by the signal processing unit to the reception unit of the deformation amount calculation unit by wire or wirelessly; And a power supply unit for supplying power to the deformation amount measuring sensor.
Wherein the deformation amount calculation unit comprises: a receiving unit for receiving deformation amount measurement data from the transmission unit of the deformation amount measurement unit; A control unit for calculating a deformation amount of the tire using the deformation amount measurement data received through the receiving unit; And a data storage unit for storing strain data calculated by the control unit. And a display unit for displaying the deformation amount data.
In the tire deformation measuring apparatus according to an embodiment of the present invention, the plurality of deformation measuring sensors may be connected to one channel.
In the tire deformation measuring apparatus according to an embodiment of the present invention, the plurality of deformation measuring sensors may be arranged in four to eight equally spaced along the circumferential direction of the tire. In the tire deformation measuring apparatus according to an embodiment of the present invention, the deformation amount measuring unit may be configured to measure an electromotive force due to a resistance change using a Wheatstone bridge.
The tire deformation measuring apparatus of the present invention can measure a deformation amount of a tire more accurately by using a plurality of sensors in one channel and estimating a measurement position and a rotating direction of a deformation amount measuring sensor in a tire, More information is provided to enable more precise control.
According to the tire deformation measuring apparatus of another embodiment of the present invention, when a plurality of transmitting units (transmitters) attached to a tire are used, analysis through one channel is possible and specific data of a plurality of deformation measuring sensors are integrated into one signal Therefore, it is possible to remarkably reduce the amount of data stored and exclude unmeasured areas of interest, thereby measuring and monitoring the amount of deformation of the tire more efficiently.
1 is a schematic block diagram of a tire deformation measuring apparatus according to an embodiment of the present invention.
2 is a view for explaining the operation principle of a tire deformation measuring apparatus according to an embodiment of the present invention.
3 is a schematic view schematically illustrating the configuration of a strain sensor, a transmitter, and a receiver according to another embodiment of the present invention.
4 is a view for explaining a concept of receiving data measured by each deformation amount measuring sensor of a deformation amount measuring unit in a tire deformation measuring apparatus according to another embodiment of the present invention via respective transmitters, to be.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known general functions or configurations will be omitted.
The tire deformation measuring apparatus of one embodiment of the present invention uses a plurality of deformation measuring sensors (for example, strain gauges) in one channel, and combines the traveling direction deformation measuring sensor and the lateral deformation measuring sensor, Backward) direction of the tire can be predicted.
1 is a schematic block diagram of a tire deformation measuring apparatus according to an embodiment of the present invention. Referring to FIG. 1, a tire deformation measuring apparatus according to the present invention includes a
The deformation
The deformation
That is, when the strain gauge is attached to the tread 1 of the
The tire deformation measuring apparatus according to the present invention obtains signals of each of a plurality of deformation measuring sensors installed in the circumferential direction of the tire, and it is possible to measure the tire behavior in all regions of the tire while the tire is mounted on the vehicle and the rotation is progressing It is effective. As an embodiment of the tire deformation measuring apparatus according to the present invention, when four sensors are used, the region of interest can be extracted four times as much as the case of using one sensor. In this case, the number of sensors is not limited to four, and it is also possible to arrange four to eight sensors at regular intervals by dividing 360 degrees by the number of arbitrary sensors, or to concentrate them at an arbitrary position of interest. The plurality of deformation measuring sensors may be installed in the tread, the shoulder, the sidewall, or the bead, though not necessarily limited thereto.
2 is a view showing an attachment position of the deformation
2 is a diagram showing the deformation amount measurement results of the running direction deformation
Even if a plurality of sensors are mounted around the circumference of the tire, it is difficult to distinguish the sensors to which the tires are grounded, and it can not be distinguished when the direction of rotation (forward / backward) is changed. As in the present invention, when four sensors are applied to one measurement channel, if one lateral deformation measuring sensor and three lateral deformation measuring sensors are applied, the position of the sensor can be known and a signal of one rotation can be extracted . You can also see when the rotation has changed. For example, let us assume that sensors 1 to 3 in Fig. 2 (A) are transversal signals, (B) 4 are longitudinal signals, and the sensor signal is AAAB-AAAB-AAAB-AAAB .
The sensor measurement (ground) position of the tire when driving a tire can be found by the following method.
b) A A AB AAAB-AAAB-AAAB 2-one signal
c) A B AA-AAAB-AAAB-AAAB 3 times signal
d) AAAB-AAA B- AAAB-AAAB signal 4 (one rotation detection)
Further, when there is a change in the direction of rotation, the change in the direction of rotation is detected and the measured position of the tire can also be determined.
Signal pattern
Signal pattern
Signal pattern
Signal pattern
When a specific number of the traveling direction
In another embodiment, a transmitter (transmitter) is installed in each of the plurality of tire
The deformation
The deformation
Hereinafter, the operation of the tire deformation measuring apparatus of the present invention will be described.
The deformation
The receiving
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. This will be obvious.
Claims (7)
Priority Applications (1)
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KR1020150189909A KR101790851B1 (en) | 2015-12-30 | 2015-12-30 | Apparatus for measuring deformation of tire |
Applications Claiming Priority (1)
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KR1020150189909A KR101790851B1 (en) | 2015-12-30 | 2015-12-30 | Apparatus for measuring deformation of tire |
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KR20170080809A true KR20170080809A (en) | 2017-07-11 |
KR101790851B1 KR101790851B1 (en) | 2017-10-27 |
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KR1020150189909A KR101790851B1 (en) | 2015-12-30 | 2015-12-30 | Apparatus for measuring deformation of tire |
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KR102345606B1 (en) * | 2020-04-28 | 2021-12-31 | 넥센타이어 주식회사 | Apparatus for testing pneumatic tire |
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JP4165320B2 (en) * | 2003-07-23 | 2008-10-15 | トヨタ自動車株式会社 | Tire condition detection device |
JP4082345B2 (en) * | 2003-12-12 | 2008-04-30 | トヨタ自動車株式会社 | Wheel state detection device, wheel and vehicle body |
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