KR20090067563A - Weight measuring system for vehicle tire - Google Patents

Weight measuring system for vehicle tire Download PDF

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Publication number
KR20090067563A
KR20090067563A KR1020070135259A KR20070135259A KR20090067563A KR 20090067563 A KR20090067563 A KR 20090067563A KR 1020070135259 A KR1020070135259 A KR 1020070135259A KR 20070135259 A KR20070135259 A KR 20070135259A KR 20090067563 A KR20090067563 A KR 20090067563A
Authority
KR
South Korea
Prior art keywords
tire
information
piezoelectric element
pressure
measuring device
Prior art date
Application number
KR1020070135259A
Other languages
Korean (ko)
Inventor
황철
Original Assignee
한국타이어 주식회사
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 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020070135259A priority Critical patent/KR20090067563A/en
Publication of KR20090067563A publication Critical patent/KR20090067563A/en

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Classifications

    • 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
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/12—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/62—Over or under weighing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
    • G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
    • G01G23/3728—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/13—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing having piezoelectric or piezoresistive properties

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The present invention relates to a tire load measuring apparatus, comprising: a tire pressure measuring apparatus including a piezoelectric element, a wireless transmitter for transmitting information measured by the pressure measuring apparatus, a receiver for receiving the transmitted information, and received information. A central processing unit for calculating and processing a furnace load, a memory for storing the information processed by the central processing unit, and a display unit for displaying the processed information. It can measure the results continuously and display the measured result in real time, so that it is easy to manage the condition of overload and the condition of tire pressure.

Description

Weight measuring system for vehicle tire

The present invention relates to an apparatus that can measure the tire load and facilitate management of tire air pressure and overload.

In the case of trucks and buses, the actual load applied to the tires is determined as a standard, and compensation is performed based on the accident, so load measurement is an important requirement. Thus, a number of techniques for measuring overload have been introduced.

Publication No. 10-2002-0079637 discloses a technique for a portable device which measures the pressure of a tire and indicates whether it is overloaded. The present invention is a portable overload measuring device for measuring the overpressure by measuring the air pressure of the vehicle tire, connected to the tire binder and the tire binder and the tube is connected to the air inlet path of the vehicle tire to measure the internal air pressure of the vehicle tire An air pressure measuring unit including an A / D converter converting the digital value into a digital value; A storage unit for storing data on the reference air pressure of the vehicle tire at each position based on the type of the vehicle, the weight of the vehicle body, the type of the tire, the number of tires in the case of a double-wheeled vehicle, and an appropriate load load weight; An input unit for inputting the type of vehicle, the weight of the vehicle body, the type of tire, the number of tires in the case of a double-wheeled vehicle, and an appropriate load loading weight; A microcomputer that determines whether the vehicle is overloaded by comparing the internal air pressure of the vehicle tire measured by the air pressure measurer with the reference air pressure of the vehicle tire detected based on the information input through the input unit; A display unit for outputting information input by the input unit, a reference air pressure and measured air pressure according to the information, a result of overload or the like; A power supply for supplying power for the operation of each component; It relates to a portable overload measuring device comprising a.

However, the technique can only measure when the vehicle is stationary, and does not provide a record of what happened during operation in the event of an accident.

In other words, it is possible to measure the load state of the tire even while the vehicle is running, and a technique for grasping the tire load state immediately before an accident even in an accident is required.

Accordingly, the present invention is to solve the above problems by installing a pressure measuring device using a piezoelectric element on the wheel of the vehicle, and display it in real time, and storing the measured value in the memory.

According to the present invention, it is possible to continuously measure the load state of the tire even while the vehicle is running, and to provide useful data on the accident situation by checking the data stored in the memory of the tire load state immediately before the accident even in an accident. There is.

The tire load measuring apparatus of the present invention includes a tire pressure measuring apparatus (1) including a piezoelectric element (11), a wireless transmitter (2) for transmitting information measured by the pressure measuring apparatus (1), and transmitted information. A receiving device 3 for receiving, a central processing unit 4 for calculating and processing loads from the received information, a memory 5 for storing information processed in the central processing unit, and the processed Characterized in that it comprises a display device (6) for displaying information.

The pressure measuring device 1 is installed on the wheel 7 of the vehicle, and includes a valve body 12, a valve cap 13, an annular piezoelectric element 11, and a pressure pin 14. The pressure measuring device 1 is installed in an air injection valve that is usually installed on the wheel. The piezoelectric element 11 is inserted into the space in the valve body 12 and is installed, and the pressure pin 14 is disposed on the lower portion of the piezoelectric element 11.

The air in the tire pushes the pressure pin 14 so that the cone portion flange 141 of the pressure pin 14 pressurizes the piezoelectric element 11 to measure the pressure. In the state in which air is injected, the pressure pin 14 is closed by the air pressure inside the tire, and when the air is injected, the pressure is pushed toward the inside of the tire to create a space, and air is injected into this space. The pressure pin 14 may form a passage therein so as not to completely block the air inlet, or the bottom surface may be formed in a cross shape rather than a circular shape.

The electrical signal generated by the pressure pin 14 pressing the piezoelectric element 11 is sent to the central processing unit 4 through the wireless transmitter 2 and the receiver 3. The central processing unit 4 has a microprocessor, which calculates the load by multiplying the cross-sectional area of the air valve by the measured air pressure (F (kgf) = A (cm 2 ) * P (kgf / cm 2). )).

In addition, the central processing unit performs statistical calculations such as the average of the calculated loads and how often the limit value is exceeded, and these calculation results are stored in the memory device 5. In the event of an accident, data stored in the memory device 5 may be referred to.

Furthermore, the results calculated by the central processing unit 4 are displayed on the display device 6 in real time so that the driver can check them at any time. The display apparatus 6 may use a vehicle navigation system or the like, and a separate LCD screen may be installed.

On the other hand, in applying the piezoelectric element 11, it is preferable to adjust the zero point to the electric signal under the prescribed pressure of the tire.

1 is a conceptual explanatory diagram of a tire load measuring apparatus of the present invention.

Figure 2 is a sectional view of the main part of the pressure measuring device of the present invention.

<Explanation of symbols for the main parts of the drawings>

1. Pressure measuring device

11. Piezoelectric element

12. Valve body

13. Valve cap

14. Pressure pin

2. Wireless transmitter

3. Receiver

4. Central processing unit

5. Memory

6. Display device

Claims (2)

A tire pressure measuring device including a piezoelectric element, a wireless transmitting device for transmitting information measured by the pressure measuring device, a receiving device for receiving the transmitted information, a central processing unit for calculating and processing a load using the received information; And a memory device for storing the processed information in the central processing unit, and a display device for displaying the processed information. The pressure measuring device of claim 1, wherein the pressure measuring device is installed in an air injection valve of a vehicle wheel, and includes a valve body, a valve cap, an annular piezoelectric element, and a pressure pin, and the piezoelectric element is inserted into a space in the valve body. The tire load measuring device, characterized in that the pressure pin is installed on the lower portion of the piezoelectric element.
KR1020070135259A 2007-12-21 2007-12-21 Weight measuring system for vehicle tire KR20090067563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070135259A KR20090067563A (en) 2007-12-21 2007-12-21 Weight measuring system for vehicle tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070135259A KR20090067563A (en) 2007-12-21 2007-12-21 Weight measuring system for vehicle tire

Publications (1)

Publication Number Publication Date
KR20090067563A true KR20090067563A (en) 2009-06-25

Family

ID=40995267

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070135259A KR20090067563A (en) 2007-12-21 2007-12-21 Weight measuring system for vehicle tire

Country Status (1)

Country Link
KR (1) KR20090067563A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101396133B1 (en) * 2012-10-09 2014-05-19 우송대학교 산학협력단 Pressure measurement apparatus for whee, that using film type piezoelectric element
KR101531792B1 (en) * 2014-04-08 2015-06-25 주식회사 더원 Loading weight measuring device for truck
US10161756B2 (en) 2015-03-30 2018-12-25 Xiaomi Inc. Navigation method and device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101396133B1 (en) * 2012-10-09 2014-05-19 우송대학교 산학협력단 Pressure measurement apparatus for whee, that using film type piezoelectric element
KR101531792B1 (en) * 2014-04-08 2015-06-25 주식회사 더원 Loading weight measuring device for truck
US10161756B2 (en) 2015-03-30 2018-12-25 Xiaomi Inc. Navigation method and device

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A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application