KR19980053961A - Vehicle speed sensor - Google Patents
Vehicle speed sensor Download PDFInfo
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- KR19980053961A KR19980053961A KR1019960073091A KR19960073091A KR19980053961A KR 19980053961 A KR19980053961 A KR 19980053961A KR 1019960073091 A KR1019960073091 A KR 1019960073091A KR 19960073091 A KR19960073091 A KR 19960073091A KR 19980053961 A KR19980053961 A KR 19980053961A
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- vehicle speed
- cylinder
- sensor
- speed sensor
- piezoelectric sensor
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- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
본 발명은 센서에 관한 것으로서, 보다 상세하게는 차속 센서에 관한 것으로서, 차량의 속도를 정확하게 알 수 있는 차속 센서를 제공함에 있다.The present invention relates to a sensor, and more particularly to a vehicle speed sensor, to provide a vehicle speed sensor that can accurately know the speed of the vehicle.
본 발명은 일정 각도 θ로 기울어진 상태로 장착된 원통(1)과, 상기한 원통(1)에 삽입되어 슬라이드 이동됨과 아울러 일정 중량을 가진 볼(2)과, 상기한 원통(1)의 일측에 설치된 압전 센서(3)와, 상기한 압전 센서(3)에 A/D컨버터(4)를 개재한 상태로 연결된 ECU(5)로 구성한다.The present invention is a cylinder (1) mounted in an inclined state at a predetermined angle θ, the ball (2) having a certain weight and being inserted into the cylinder (1) and slide movement, and one side of the cylinder (1) The piezoelectric sensor 3 provided in the and the ECU 5 connected to the said piezoelectric sensor 3 via the A / D converter 4 are comprised.
Description
본 발명은 센서에 관한 것으로서, 보다 상세하게는 차속 센서에 관한 것이다.The present invention relates to a sensor, and more particularly to a vehicle speed sensor.
일반적으로, 자동차는 엔진으로부터의 폭발력을 적절하게 변환시켜 차속에 적합한 구동력을 얻게 되는 것이다.In general, an automobile converts the explosive force from the engine appropriately to obtain a driving force suitable for the vehicle speed.
여기서, 상기한 차속은 엔진의 연료 분사량, 자동 변속기 제어, 흡기량 제어 등을 위해 ECU에 전달되면서 제어 신호로 사용되는 바, 상기한 차속은 변속기의 출력축 및 휠에 장치된 차속 센서에 의해 얻어진다.Here, the vehicle speed is used as a control signal while being transmitted to the ECU for fuel injection amount, automatic transmission control, intake amount control, etc. of the engine, and the vehicle speed is obtained by the vehicle speed sensor installed on the output shaft and the wheel of the transmission.
상기한 차속 센서는 통상 자계를 감지하여 차속을 구하게 되는 바, 이는 자계가 간헐 형성되어 있을 뿐만 아니라 회전되는 로터를 홀 센서 등으로 자계 감지하게 되는 것이다.The vehicle speed sensor typically detects a magnetic field to obtain a vehicle speed, which not only forms an intermittent magnetic field but also detects a rotating rotor by a hall sensor or the like.
즉, 1회전동안 로터에 형성된 자계를 감지함으로써 전체적인 회전수를 체크할 수 있게 되는 것이다.That is, by detecting the magnetic field formed in the rotor during one revolution it is possible to check the total number of revolutions.
그러나, 상기한 바와 같은 차속 센서는 직접 차속을 체크하지 않고 차륜 또는 변속기의 회전수를 감지하는 것이기 때문에 정확한 차속을 구할 수 없는 문제점이 있다.However, since the vehicle speed sensor as described above detects the rotation speed of the wheel or the transmission without directly checking the vehicle speed, an accurate vehicle speed cannot be obtained.
따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로서, 차량의 속도를 정확하게 알 수 있는 차속 센서를 제공함에 있다.Accordingly, an object of the present invention is to provide a vehicle speed sensor that can accurately recognize the speed of a vehicle.
상기한 목적을 실현하기 위하여 본 발명은 일정 각도θ로 기울어진 상태로 장착된 원통과, 상기한 원통에 삽입되어 슬라이드 이동됨과 아울러 일정 중량을 가진 볼과, 상기한 원통의 일측에 설치된 압전 센서와, 상기한 압전 센서에 A/D컨버터를 개재한 상태로 연결된 ECU로 구성함을 특징으로 한다.In order to achieve the above object, the present invention provides a cylinder mounted in an inclined state at a predetermined angle θ, a ball inserted into the cylinder and being slide-moved, and having a predetermined weight, and a piezoelectric sensor installed at one side of the cylinder. The ECU is configured to be connected to the piezoelectric sensor through an A / D converter.
도면은 본 발명에 따른 차속 센서를 도시한 개략도.Figure is a schematic diagram showing a vehicle speed sensor according to the present invention.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1:원통2:볼1: cylinder 2: ball
3:압전 센서4:A/D컨버터3: Piezoelectric sensor 4: A / D converter
5:ECU5: ECU
도면은 차속 센서를 도시한 개략도로서, 일정 각도θ로 기울어진 상태인 원통(1)과, 상기한 원통(1)에 삽입됨과 아울러 일정 중량을 가진 볼(2)과, 상기한 원통(1)의 일측에 설치된 압전 센서(3)와, 상기한 압전 센서(3)에 A/D컨버터(4)를 개재한 상태로 연결된 ECU(5)로 구성되어 있다.The figure is a schematic diagram showing a vehicle speed sensor, a cylinder 1 inclined at a predetermined angle θ, a ball 2 inserted into the cylinder 1 and having a predetermined weight, and the cylinder 1 described above. Piezoelectric sensor (3) provided on one side of, and the ECU (5) connected to the piezoelectric sensor (3) in the state via the A / D converter (4).
상기한 바와 같은 본 발명의 작용 효과를 설명하면 차량의 진행 방향에 따라 원통(1)이 설치되어 있는 차량이 주행하게 되면 볼(2)이 차량 속도에 따른 힘으로 후방으로 밀리게 되고, 현재 차속에 따른 힘에 의해 볼(2)이 압전 센서(3)를 밀게 된다.Referring to the operation and effect of the present invention as described above, when the vehicle with the cylinder 1 is installed in accordance with the traveling direction of the vehicle is driven, the ball 2 is pushed to the rear by the force according to the vehicle speed, the current vehicle speed The ball 2 pushes the piezoelectric sensor 3 by the force.
압전 센서(3)를 밀게 되면 상기한 힘에 따른 전류가 압전 센서(3)에서 발생되는바, 상기한 전류를 ECU(5)에서 감지하여 차속으로 연산하게 되는 것이다.When the piezoelectric sensor 3 is pushed, the current according to the force is generated in the piezoelectric sensor 3, and the current is detected by the ECU 5 to calculate the vehicle speed.
물론, 상기한 연산은 하기한 식(1)에 따라 이루어지게 된다.Of course, the above calculation is made according to the following equation (1).
Va:이동 속도Va: moving speed
Vo:차량 진행 속도Vo: vehicle progress speed
l:원통 길이l: cylindrical length
g:중력 가속도g: gravity acceleration
즉, 차량의 이동 속도와 원통(1)의 길이에 따른 볼(2)의 이동 속도에 의해 압전 센서(3)에서 전류가 발생되고, 상기한 전류에 의해 현재 차속을 계산할 수 있게 되는 것이다.That is, the current is generated in the piezoelectric sensor 3 by the moving speed of the vehicle and the moving speed of the ball 2 along the length of the cylinder 1, and the current vehicle speed can be calculated by the current.
물론, 상기한 차속은 종래와 같이 차륜의 회전 속도가 아니고 직접적인 차속을 체크할 수 있게 됨으로써 이를 정보로 사용하는 연료량 분사등을 보다 정확하게 할 수 있게 되는 것이다.Of course, the above-described vehicle speed can directly check the vehicle speed instead of the rotational speed of the wheel as in the prior art, so that the amount of fuel injection and the like using the information can be more accurately performed.
이상과 같이 본 발명은 경사진 상태의 원통에 볼을 삽입하고, 상기한 볼이 압전 센서를 압박하는 힘으로 차속을 체크함으로써 실질적인 차속을 알 수 있는 잇점이 있는 것이다.As described above, the present invention has the advantage that the actual vehicle speed can be known by inserting the ball into the cylinder in the inclined state and checking the vehicle speed with the force of the ball pressing the piezoelectric sensor.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960073091A KR19980053961A (en) | 1996-12-27 | 1996-12-27 | Vehicle speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960073091A KR19980053961A (en) | 1996-12-27 | 1996-12-27 | Vehicle speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980053961A true KR19980053961A (en) | 1998-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960073091A KR19980053961A (en) | 1996-12-27 | 1996-12-27 | Vehicle speed sensor |
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| Country | Link |
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| KR (1) | KR19980053961A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040026839A (en) * | 2002-09-26 | 2004-04-01 | 현대자동차주식회사 | Apparatus for measure the speed of an automobile using piezo electric effect element |
-
1996
- 1996-12-27 KR KR1019960073091A patent/KR19980053961A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040026839A (en) * | 2002-09-26 | 2004-04-01 | 현대자동차주식회사 | Apparatus for measure the speed of an automobile using piezo electric effect element |
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