JPH0843086A - Inclination angle detection device - Google Patents
Inclination angle detection deviceInfo
- Publication number
- JPH0843086A JPH0843086A JP19478494A JP19478494A JPH0843086A JP H0843086 A JPH0843086 A JP H0843086A JP 19478494 A JP19478494 A JP 19478494A JP 19478494 A JP19478494 A JP 19478494A JP H0843086 A JPH0843086 A JP H0843086A
- Authority
- JP
- Japan
- Prior art keywords
- strain
- strain gauge
- elastic body
- inclination angle
- bridge circuit
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車・船舶・農作業
機器・業務用及び家庭用ゲームマシン等の地面に対する
傾斜角度を重力の大きさを検出して求める傾斜角度検出
装置に関し、特に、傾斜角度方向の検出及び傾斜角度の
測定精度向上に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inclination angle detecting device for detecting an inclination angle of an automobile, a ship, an agricultural work machine, a commercial or household game machine, etc. with respect to the ground by detecting the magnitude of gravity. The present invention relates to detection of an angular direction and improvement of inclination angle measurement accuracy.
【０００２】[0002]
【従来の技術】図３は、従来の歪ゲージ式の傾斜角度検
出装置の構造を示す斜視図である。この傾斜角度検出装
置８においては、矩形の歪弾性体板１の表面の歪により
抵抗値が変化する歪ゲージ２が貼り付けられている。前
記歪弾性体板１の両端部は、歪弾性体板支持体４である
不動部とおもり３が接着されている可動部に分けられて
いる。2. Description of the Related Art FIG. 3 is a perspective view showing the structure of a conventional strain gauge type inclination angle detecting device. In this inclination angle detection device 8, a strain gauge 2 whose resistance value changes due to strain on the surface of a rectangular strain elastic plate 1 is attached. Both ends of the strain elastic body plate 1 are divided into a stationary portion which is the strain elastic body plate support 4 and a movable portion to which the weight 3 is adhered.
【０００３】図４は、図３に示した前記傾斜角度検出装
置の歪ゲージブリッジ回路図である。歪ゲージ２からな
る抵抗Ｒ1とオフセット出力電圧調整用抵抗Ｒ2及び抵抗
Ｒ3，Ｒ4２個により４抵抗のブリッジ回路を構成してい
る。FIG. 4 is a strain gauge bridge circuit diagram of the tilt angle detecting device shown in FIG. A resistor R 1 including the strain gauge 2, an offset output voltage adjusting resistor R 2, and two resistors R 3 and R 4 constitute a 4-resistor bridge circuit.
【０００４】周知のように、ブリッジ回路は、平衡状態
から抵抗値が変化した場合、平衡状態の初期出力電圧に
対し、抵抗値変化分の出力電圧変化が生じる回路であ
る。As is well known, a bridge circuit is a circuit in which, when the resistance value changes from the equilibrium state, the output voltage changes by the resistance value change with respect to the initial output voltage in the equilibrium state.
【０００５】図３及び図４を用いて傾斜角度検出装置の
原理を説明すると、まず、重力が矩形の歪弾性体板１に
作用して歪弾性体板１が変形すると、前記歪弾性体板１
に貼り付けられている歪ゲージ２からなる抵抗Ｒ1も同
時に変形し、その抵抗値が変化する。この時、前記歪ゲ
ージ２の抵抗値変化は、重力の大きさに比例するため、
前述したような抵抗値変化分、即ちブリッジ回路の出力
電圧変化分が重力の大きさとなる。The principle of the tilt angle detecting device will be described with reference to FIGS. 3 and 4. First, when gravity acts on the rectangular strain elastic body plate 1 to deform the strain elastic body plate 1, the strain elastic body plate is deformed. 1
The resistance R 1 formed of the strain gauge 2 attached to is also deformed at the same time, and its resistance value changes. At this time, since the change in the resistance value of the strain gauge 2 is proportional to the magnitude of gravity,
The amount of change in the resistance value as described above, that is, the amount of change in the output voltage of the bridge circuit becomes the magnitude of gravity.
【０００６】図４の場合、重力がない状態の歪ゲージブ
リッジ回路出力電圧は、（Ｖ1−Ｖ2）で示され、（Ｖ1
−Ｖ2）をオフセット出力電圧調整用抵抗Ｒ2によって、
０又は任意の基準電圧に設定し、その出力電圧変化分が
重力の大きさとなる。In the case of FIG. 4, the output voltage of the strain gauge bridge circuit in the absence of gravity is represented by (V 1 -V 2 ), and (V 1
-V 2 ) by the offset output voltage adjusting resistor R 2
It is set to 0 or an arbitrary reference voltage, and the amount of change in the output voltage becomes the magnitude of gravity.
【０００７】歪弾性体板１を、図３に示す回軸方向に３
６０゜回転させた場合の歪ゲージブリッジ回路出力電圧
（Ｖ1−Ｖ2）は、図５に示すように、正弦波形を示すも
のとなる。The strain elastic plate 1 is moved in the direction of the rotation axis shown in FIG.
The output voltage (V 1 -V 2 ) of the strain gauge bridge circuit when rotated by 60 ° has a sinusoidal waveform as shown in FIG.
【０００８】[0008]
【発明が解決しようとする課題】従来の歪ゲージ式傾斜
角度検出装置８は、傾斜軸一軸に前記歪弾性体板１が１
個配置されており、そのため、従来の傾斜角度検出装置
では３６０゜（１回転）中に、同一出力電圧が２回現れ
ることとなり、単なる傾斜角度は測定できるが、原点を
基準とした場合の傾斜角度の方向が不明となる欠点があ
った。In the conventional strain gauge type tilt angle detecting device 8, the strain elastic plate 1 is arranged on one axis of the tilt axis.
Therefore, in the conventional tilt angle detection device, the same output voltage appears twice during 360 ° (one rotation), and the mere tilt angle can be measured. There was a drawback that the direction of the angle was unknown.
【０００９】本発明は、この傾斜角度検出装置の３６０
゜（１回転）中の原点を基準とした場合の正確な方向を
含めた傾斜角度の測定を可能とし、安定な精度のよい傾
斜角度検出装置を提供することを目的とする。The present invention relates to the tilt angle detecting device 360.
An object of the present invention is to provide a stable and accurate tilt angle detection device that enables measurement of a tilt angle including an accurate direction when the origin in one degree (one rotation) is used as a reference.
【００１０】[0010]
【課題を解決するための手段】本発明によれば、弾性体
板の少なくとも一方の表面に歪により抵抗値が変化する
歪ゲージを配置した歪弾性体板と、前記歪ゲージを含む
４個の抵抗で構成される歪ゲージブリッジ回路と、前記
歪弾性体板の可動端部におもりを配置し、前記歪弾性体
板に加わる重力を前記歪ゲージブリッジ回路の出力電圧
変化により検出し、傾斜角度を求める傾斜角度検出装置
において、傾斜角度を検出する傾斜軸に対して３６０゜
回転時（１回転中）に２個の歪ゲージブリッジ回路の出
力がそれぞれ９０゜の位相ずれが生じるように、前記歪
弾性体板を２個配置することにより、正確な傾斜角度の
測定が可能となる傾斜角度検出装置が得られる。According to the present invention, a strain elastic plate having a strain gauge whose resistance value changes due to strain is disposed on at least one surface of the elastic plate, and four strain gauges including the strain gauge. A strain gauge bridge circuit composed of a resistor and a weight are arranged at the movable end of the strain elastic body plate, and gravity applied to the strain elastic body plate is detected by a change in the output voltage of the strain gauge bridge circuit. In the tilt angle detecting device for determining the tilt angle, the output of the two strain gauge bridge circuits is shifted by 90 degrees with respect to the tilt axis for detecting the tilt angle so that the outputs of the two strain gauge bridge circuits each have a phase shift of 90 degrees. By arranging two strain elastic plates, an inclination angle detecting device capable of accurately measuring the inclination angle can be obtained.
【００１１】[0011]
【作用】本発明の傾斜角度検出装置は、傾斜角度を検出
する傾斜軸に対して３６０゜回転する時に、２個の歪ゲ
ージブリッジ回路の出力が、それぞれ９０゜の位相ずれ
を生ずるように歪弾性体板を２個配置したもので、９０
°の位相ずれを利用して、二つの出力の特性により、回
転方向を判別すると共に、出力値の相対比較により傾斜
角度を求めることができるので、周囲の環境等、外部の
変動の影響をあまり受けないために、精度よく測定でき
る。In the tilt angle detecting device of the present invention, the outputs of the two strain gauge bridge circuits are distorted so that the outputs of the two strain gauge bridge circuits are rotated by 360 ° with respect to the tilt axis for detecting the tilt angle. With two elastic plates arranged, 90
Using the phase shift of °, the rotation direction can be discriminated by the characteristics of the two outputs, and the tilt angle can be obtained by relative comparison of the output values, so there is less influence of external fluctuations such as the surrounding environment. Since it does not receive, it can be measured accurately.
【００１２】[0012]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】図１は、本発明の実施例を示す傾斜角度検
出装置の構造図である。本発明の歪ゲージ式の傾斜角度
検出装置は、図３に示す従来の傾斜角度検出装置を２個
用いており、図１に示すように、第一の傾斜角度検出装
置８ａにおいては、ＸＹ平面上に矩形の第一の歪弾性体
板５の表面に歪により抵抗値が変化する歪ゲージが形成
され、前記第一の弾性体板５の両端には不動部である歪
弾性体板支持体４と可動部であるおもり３とが接着され
ている。前記第一の歪弾性体板５は、縦に（ＸＹ平面に
垂直に）接着されている。他方の第二の傾斜角度検出装
置８ｂは、第一の傾斜角度検出装置８ａと全く同様に構
成され、ＸＹ平面上に矩形の第二の歪弾性体板６の表面
に歪ゲージが形成され、前記第二の歪弾性体板６の両端
には歪弾性体板支持体４とおもり３とが接着されてい
る。前記第二の歪弾性体板６は、横に（ＸＹ平面に平行
に）接着されている。前記第一の歪弾性体板５の歪ゲー
ジは、第一の傾斜角度検出装置８ａの第一の歪ゲージブ
リッジ回路Ａに接続され、歪ゲージの抵抗値変化が、電
圧出力で第一の歪ゲージブリッジ回路出力Ｖｏｕｔ１
として得られる。同様に、前記第二の歪弾性体板６の歪
ゲージは、第二の傾斜角度検出装置８ｂの第二の歪ゲー
ジブリッジ回路Ｂに接続され、歪ゲージの抵抗値変化
が、電圧出力で第二の歪ゲージブリッジ回路出力Ｖｏ
ｕｔ２として得られる。FIG. 1 is a structural view of an inclination angle detecting device showing an embodiment of the present invention. The strain gauge type inclination angle detecting device of the present invention uses two conventional inclination angle detecting devices shown in FIG. 3, and as shown in FIG. 1, in the first inclination angle detecting device 8a, the XY plane is used. A strain gauge whose resistance value changes due to strain is formed on the surface of a rectangular first strain elastic plate 5, and a strain elastic plate support that is a non-moving part at both ends of the first elastic plate 5. 4 and the weight 3, which is a movable part, are bonded together. The first strain elastic plate 5 is adhered vertically (perpendicular to the XY plane). The other second inclination angle detection device 8b is configured in exactly the same manner as the first inclination angle detection device 8a, and a strain gauge is formed on the surface of the rectangular second strain elastic body plate 6 on the XY plane, A strain elastic plate support 4 and a weight 3 are adhered to both ends of the second strain elastic plate 6. The second strain elastic body plate 6 is laterally (parallel to the XY plane) bonded. The strain gauge of the first strain elastic plate 5 is connected to the first strain gauge bridge circuit A of the first inclination angle detecting device 8a, and the change in resistance value of the strain gauge causes the first strain by the voltage output. Gauge bridge circuit output Vout1
Obtained as. Similarly, the strain gauge of the second strain elastic plate 6 is connected to the second strain gauge bridge circuit B of the second inclination angle detection device 8b, and the change in resistance value of the strain gauge is detected by the voltage output. Second strain gauge bridge circuit output Vo
Obtained as ut2.
【００１４】初期状態にてＺ軸方向を重力の矢印７の方
向とし、Ｙ軸を矢印９の回転方向に回転させた（Ｙ軸の
回転角度がＸ軸の傾斜角度となる）場合の回転角度に対
する第一の歪ゲージブリッジ回路出力Ｖｏｕｔ１波
形、及び第二の歪ゲージブリッジ回路出力Ｖｏｕｔ２
波形は、図２の通りとなる。この時、回転角度（傾斜角
度）をθとした場合、第一の歪ゲージブリッジ回路出力
Ｖｏｕｔ１、及び第二の歪ゲージブリッジ回路出力
Ｖｏｕｔ２は、下式で表される。In the initial state, the Z-axis direction is the direction of gravity arrow 7 and the Y-axis is rotated in the rotation direction of arrow 9 (the rotation angle of the Y-axis becomes the tilt angle of the X-axis). To the first strain gauge bridge circuit output Vout1 waveform, and the second strain gauge bridge circuit output Vout2
The waveform is as shown in FIG. At this time, when the rotation angle (tilt angle) is θ, the first strain gauge bridge circuit output Vout1 and the second strain gauge bridge circuit output Vout2 are expressed by the following equations.
【００１５】 Ｖｏｕｔ１＝ＡＳｉｎθ ・・・・・（１）Vout1 = ASinθ (1)
【００１６】 Ｖｏｕｔ２＝ＢＣｏｓθ ・・・・・（２）Vout2 = BCosθ (2)
【００１７】従って、上記（１）式、及び（２）式よ
り、回転角度（傾斜角度）θは、（３）式で表される。Therefore, from the equations (1) and (2), the rotation angle (tilt angle) θ is represented by the equation (3).
【００１８】θ＝Ｔａｎ-1［（Ｖｏｕｔ１×Ｂ）／（Ｖ
ｏｕｔ２×Ａ）］ ・・・・・（３）Θ = Tan -1 [(Vout1 × B) / (V
out2 × A)] (3)
【００１９】更に、Ｖｏｕｔ１及びＶｏｕｔ２の極性を
判別することにより、表１に示すように、回転角度（傾
斜角度）θを０〜３６０゜で判別することができる。Further, by discriminating the polarities of Vout1 and Vout2, the rotation angle (tilt angle) θ can be discriminated from 0 to 360 ° as shown in Table 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】なお、歪ゲージが１個の場合は、出力の絶
対値で測定するので、個々の素子の特性、重力により、
変化するが、２個使用の相対値の場合、２個同じ特性で
あれば、重力の変化、入力、温度等に影響されないの
で、安定で、精度のよい測定ができる装置を提供でき
る。When the number of strain gauges is one, the absolute value of the output is used for the measurement.
Although it changes, in the case of using two relative values, if the two have the same characteristics, they are not affected by changes in gravity, input, temperature, etc., so a stable and accurate measurement device can be provided.
【００２２】[0022]
【発明の効果】以上、説明したように、本発明の傾斜角
度検出装置において、傾斜角度を検出する傾斜軸に対し
て３６０゜回転時に、２個の第一及び第二の歪ゲージブ
リッジ回路出力が、それぞれ９０゜の位相ずれが生じる
ように歪弾性体板を２個配置することにより、正確な傾
斜角度の測定が可能となる。As described above, in the tilt angle detecting device of the present invention, when the 360 ° is rotated with respect to the tilt axis for detecting the tilt angle, the two first and second strain gauge bridge circuit outputs are output. However, by arranging two strain elastic plates such that the respective phase shifts of 90 ° occur, it is possible to accurately measure the tilt angle.
【図１】本発明の実施例を示す傾斜角度検出装置の構造
図。FIG. 1 is a structural diagram of a tilt angle detection device showing an embodiment of the present invention.
【図２】本発明の傾斜角度検出装置の傾斜角度θにおけ
る第一の歪ゲージブリッジ回路出力及び第二の歪ゲージ
ブリッジ回路出力の出力電圧波形を示す図。図２（ａ）
は、第一の歪ゲージブリッジ回路出力の出力電圧波形を
示す図。図２（ｂ）は、第二の歪ゲージブリッジ回路出
力の出力電圧波形を示す図。FIG. 2 is a diagram showing output voltage waveforms of a first strain gauge bridge circuit output and a second strain gauge bridge circuit output at a tilt angle θ of the tilt angle detection device of the present invention. Figure 2 (a)
FIG. 4 is a diagram showing an output voltage waveform of the output of the first strain gauge bridge circuit. FIG. 2B is a diagram showing an output voltage waveform of the output of the second strain gauge bridge circuit.
【図３】従来の歪ゲージ式の傾斜角度検出装置の構造を
示す斜視図。FIG. 3 is a perspective view showing the structure of a conventional strain gauge type tilt angle detection device.
【図４】傾斜角度検出装置の歪ゲージブリッジ回路図。FIG. 4 is a strain gauge bridge circuit diagram of the tilt angle detection device.
【図５】従来の歪ゲージ式傾斜角度検出装置の３６０゜
回転時の歪ゲージブリッジ回路出力（Ｖ1−Ｖ2）波形を
示す図。FIG. 5 is a diagram showing a waveform of a strain gauge bridge circuit output (V 1 -V 2 ) when a conventional strain gauge type tilt angle detecting device is rotated by 360 °.
１，５，６ 歪弾性体板 ２ 歪ゲージ ３ おもり ４ 歪弾性体板支持体 ７，９ 矢印 ８ 傾斜角度検出装置 ８ａ 第一の傾斜角度検出装置 ８ｂ 第二の傾斜角度検出装置 第一の歪ゲージブリッジ回路出力 第二の歪ゲージブリッジ回路出力 Ａ 第一の歪ゲージブリッジ回路 Ｂ 第二の歪ゲージブリッジ回路 Ｒ1 （歪ゲージ）抵抗 Ｒ2 （オフセット出力電圧調整用）抵抗 Ｒ3，Ｒ4 抵抗 Ｖ1，Ｖ2 出力電圧 Ｖcc 入力電圧 Ｖｏｕｔ１ 第一の歪ゲージブリッジ回路出力 Ｖｏｕｔ２ 第二の歪ゲージブリッジ回路出力1, 5, 6 strain elastic body plate 2 strain gauge 3 weight 4 strain elastic body plate support 7, 9 arrow 8 tilt angle detection device 8a first tilt angle detection device 8b second tilt angle detection device first strain gauge bridge circuit output the second strain gauge bridge circuit output a first strain gauge bridge circuit B second strain gauge bridge circuits R 1 (strain gauge) resistor R 2 (for offset output voltage adjustment) resistors R 3, R 4 Resistance V 1 , V 2 Output voltage Vcc Input voltage Vout 1 First strain gauge bridge circuit output Vout 2 Second strain gauge bridge circuit output
Claims (1)
より抵抗値が変化する歪ゲージを配置した歪弾性体板
と、前記歪ゲージを含む４個の抵抗で構成される歪ゲー
ジブリッジ回路と、前記歪弾性体板の可動端部におもり
を配置し、前記歪弾性体板に加わる重力を前記歪ゲージ
ブリッジ回路の出力電圧変化により検出し、傾斜角度を
求める傾斜角度検出装置において、傾斜角度を検出する
傾斜軸に対する回転に対して、又は回転する時に、２個
の歪ゲージブリッジ回路の出力がそれぞれ９０゜の位相
ずれが生じるように、前記歪弾性体板を２個配置したこ
とを特徴とする傾斜角度検出装置。1. A strain elastic plate having a strain gauge whose resistance value changes due to strain on at least one surface of the elastic plate, and a strain gauge bridge circuit composed of four resistors including the strain gauge. A tilt angle detecting device, in which a weight is arranged at a movable end of the strain elastic plate and gravity applied to the strain elastic plate is detected by a change in output voltage of the strain gauge bridge circuit to obtain a tilt angle, The two strain elastic body plates are arranged so that the outputs of the two strain gauge bridge circuits are out of phase with each other by 90 ° with respect to the rotation with respect to the tilt axis for detecting the strain. Inclination angle detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19478494A JPH0843086A (en) | 1994-07-26 | 1994-07-26 | Inclination angle detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19478494A JPH0843086A (en) | 1994-07-26 | 1994-07-26 | Inclination angle detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0843086A true JPH0843086A (en) | 1996-02-16 |
Family
ID=16330210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19478494A Pending JPH0843086A (en) | 1994-07-26 | 1994-07-26 | Inclination angle detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0843086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007275934A (en) * | 2006-04-07 | 2007-10-25 | National Institute Of Advanced Industrial & Technology | Automatic molten metal pouring system |
-
1994
- 1994-07-26 JP JP19478494A patent/JPH0843086A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007275934A (en) * | 2006-04-07 | 2007-10-25 | National Institute Of Advanced Industrial & Technology | Automatic molten metal pouring system |
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