JPS63153476A - Acceleration detector - Google Patents
Acceleration detectorInfo
- Publication number
- JPS63153476A JPS63153476A JP30198286A JP30198286A JPS63153476A JP S63153476 A JPS63153476 A JP S63153476A JP 30198286 A JP30198286 A JP 30198286A JP 30198286 A JP30198286 A JP 30198286A JP S63153476 A JPS63153476 A JP S63153476A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- type iron
- metal film
- acceleration
- metallic film
- 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
- 230000001133 acceleration Effects 0.000 title claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 230000005284 excitation Effects 0.000 claims description 7
- 229910001004 magnetic alloy Inorganic materials 0.000 claims 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000269851 Sarda sarda Species 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えば車載用やロボット用等の各種の機械
に装着される加速度検出装置（以下、Ｇセンサと称する
。）に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an acceleration detection device (hereinafter referred to as a G sensor) that is mounted on various types of machines, such as vehicles and robots.
従来のＧセンサに於ては、一般に振シ子式又はボール式
のものが用いられている。この振り子又はボールを加速
度の作用体として利用して加速度を検出していた。Conventional G sensors generally use a pendulum type or a ball type. Acceleration was detected using this pendulum or ball as an acceleration effecting body.
従来のＧセンサは以上のように構成されているので、作
用体がかなりＮ量大となり且つ大型化し、しかも機械的
な磨耗部分が存在するのでこの磨耗が上記作用体のＭ量
の増大につれて顕著となるために寿命を著るしく縮め、
更に、構造的に複雑化しているために小型軽量化が困難
であると共に高価となるなどの問題点があった。Since the conventional G sensor is constructed as described above, the working body has a considerably large amount of N and is large in size.Moreover, since there is a mechanically worn part, this wear becomes more noticeable as the amount of M in the working body increases. As a result, lifespan is significantly shortened,
Furthermore, since the structure is complicated, it is difficult to reduce the size and weight, and it is also expensive.
この発明は上記のような問題点を解消するためになされ
たもので、簡単な構造で非接触式に加速度を検出できる
Ｇセンサを得ることを目的とする。This invention was made to solve the above-mentioned problems, and aims to provide a G sensor that has a simple structure and can detect acceleration in a non-contact manner.
この発明に係るＧセンサは、磁性鰹を設けた磁性金属嘆
体の両側に一対のＥ型鉄心を対向配置し、これらＥ型鉄
心に励磁コイル及び検出コイルから成るコイル集合体を
内挿するようにしたものである。The G sensor according to the present invention has a pair of E-type iron cores facing each other on both sides of a magnetic metal body provided with magnetic bonito, and a coil assembly consisting of an excitation coil and a detection coil is inserted into these E-type iron cores. This is what I did.
この発明におけるＧセンサは、加速度の作用下で磁性錘
と磁性金属膜体が変位し、それらとＥ型鉄心との距離を
変化させて磁気抵抗を変化させ、励磁コイルの励磁によ
り磁場を与えられている時、雨検出コイルに磁気抵抗差
による誘導電圧差が生じるようにする。In the G sensor of this invention, the magnetic weight and the magnetic metal film are displaced under the action of acceleration, the distance between them and the E-type iron core is changed to change the magnetic resistance, and a magnetic field is applied by excitation of the excitation coil. When the rain detection coil is wet, an induced voltage difference is generated in the rain detection coil due to the difference in magnetic resistance.
以下、この発明の一実施例を図について説明する。第１
図はこの発明の一実施例を示す断面図である。同図にお
いて、１は磁性金属膜体で、磁性金属膜体１ａと同１ｂ
とから構成されている。２は磁性金属膜体１の中央部に
固定保持された加速度の作用体としての磁性錘、３ａ、
３ｂは互いの各辺の端部が磁性金属膜体１や磁性錘２を
介して対向する如く左右に配置された第１及び第２のＥ
型鉄心である。４ａ、４ｂは磁気回路の磁気抵抗の変化
を検出する検出コイルと不図示の電源に接続されこの検
出コイルに磁場を与える励磁コイルとから各々構成され
る第１及び第２のコイル集合体で、第１及び第２のＥ型
鉄心３ａ、３ｂの各空間部に内挿される。５ａ、５ｂは
左右のノ１ウジングで、第１及び第２のＥ型鉄心３ａ、
３ｂ及び第１及び第２のコイル集合体４ａ、４ｂを左右
の所定空間部に固定保持すると共に磁性金属膜体１が上
下に位置するようＫその端部を挾持し且つ接着固定して
いる。（Ｘ−Ｘ）、（Ｙ−Ｙ）はか＼る構成のＧセンサ
の左右及び上下の互いに直交する中心軸線であシ、この
Ｇセンサは例えば車載されている。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a sectional view showing an embodiment of the present invention. In the figure, 1 is a magnetic metal film body, and the magnetic metal film bodies 1a and 1b are the same.
It is composed of. 2 is a magnetic weight fixedly held at the center of the magnetic metal film body 1 as an acceleration acting body; 3a;
3b is a first and a second E arranged on the left and right so that the ends of each side face each other with the magnetic metal film 1 and the magnetic weight 2 interposed therebetween.
It is a type iron core. 4a and 4b are first and second coil assemblies each composed of a detection coil that detects a change in magnetic resistance of a magnetic circuit and an excitation coil that is connected to a power source (not shown) and applies a magnetic field to the detection coil; It is inserted into each space of the first and second E-shaped cores 3a and 3b. 5a and 5b are the left and right nozzles, and the first and second E-type iron cores 3a,
3b and the first and second coil assemblies 4a, 4b are fixedly held in predetermined left and right spaces, and the ends of the magnetic metal film 1 are sandwiched and adhesively fixed so that the magnetic metal film 1 is positioned above and below. (X-X) and (Y-Y) are central axes of the left and right sides and the top and bottom of the G sensor having the above configuration, which are orthogonal to each other, and this G sensor is mounted on a vehicle, for example.
次に動作について説明する。今、左又は右方向の（Ｘ−
￥）方向に作用する加速度が零である場合には、磁性金
属膜体１及び磁性＠２は中立位置の上下の（Ｙ−Ｙ）軸
線上にあるため、左右の第１及び第２のＥ型鉄心３ａ、
３ｂ、磁性金属膜体ｌａ、ｌｂ及び磁性＝２で各々形成
される左右の各磁気回路の磁気抵抗は等しい。このため
、左右にある第１及び第２のコイル集合体４ａ、４ｂの
検出コイルに発生する誘導電圧の値も等しく、それら左
右の検出コイルの差動出力電圧は零である。Next, the operation will be explained. Now left or right direction (X-
When the acceleration acting in the direction of type iron core 3a,
3b, the magnetic resistances of the left and right magnetic circuits formed by the magnetic metal films la and lb and magnetism=2 are equal. Therefore, the values of the induced voltages generated in the detection coils of the first and second coil assemblies 4a and 4b on the left and right sides are also equal, and the differential output voltage between the left and right detection coils is zero.
次に、（Ｘ−Ｘ）方向に加速度が左方向（又は、右方向
）に作用すると、磁性錘２は加速度の作用を受けて、そ
の加速度の方向と反対方向に変位する。又、この磁性＃
ｌ！２と一体化されている磁性金属膜体１も、この磁性
錘２の変位方向と同方向に変位する。従って、加速度の
作用方向側におる第１のＥ型鉄心３ａ（又は、第２のＥ
型鉄心３ｂ）と磁性金属膜体１ａ、ｌｂや磁性錘２との
各距離は増大され、第２のＥ型鉄心３ｂ（又は、第１の
Ｅ型鉄心３ａ）と磁性金属膜体１ａ、ｌｂや磁性錘２と
の斜距離は減少する。よって、左側（又は、右側）にあ
る磁気回路の磁気抵抗は増大し、反対側の磁気回路の磁
気抵抗が減少する。この時、第１及び第２のコイル集合
体４ａ、４ｂの励磁コイルの励磁により上記各磁気回路
に磁場が与えられているので左右の第１及び第２の集合
体４ａ、４ｂの検出コイルに発生する誘導電圧は異なる
値となる。このため、上記雨検出コイルの差動出力電圧
が生じるようになる。そして、上記差動出力電圧の値は
作用する加速度の大きさに比例すると共に１その極性は
加速度の方向によって反転する。故に、このＧセンサに
よれば加速度の大きさと共にその方向も同時に検出可能
となる。Next, when acceleration acts to the left (or right) in the (XX) direction, the magnetic weight 2 is affected by the acceleration and is displaced in the opposite direction to the direction of the acceleration. Also, this magnetic #
l! The magnetic metal film body 1 integrated with the magnetic weight 2 is also displaced in the same direction as the displacement direction of the magnetic weight 2. Therefore, the first E-type iron core 3a (or the second
The distances between the magnetic metal film bodies 1a, lb and the magnetic weight 2 are increased, and the distances between the second E-type iron core 3b (or first E-type core 3a) and the magnetic metal film bodies 1a, lb are increased. and the oblique distance from the magnetic weight 2 decreases. Therefore, the magnetic resistance of the magnetic circuit on the left (or right) side increases, and the magnetic resistance of the magnetic circuit on the opposite side decreases. At this time, since a magnetic field is applied to each magnetic circuit by the excitation of the excitation coils of the first and second coil assemblies 4a and 4b, the detection coils of the left and right first and second assemblies 4a and 4b are The induced voltages generated will have different values. Therefore, a differential output voltage of the rain detection coil is generated. The value of the differential output voltage is proportional to the magnitude of the applied acceleration, and its polarity is reversed depending on the direction of the acceleration. Therefore, with this G sensor, both the magnitude and direction of acceleration can be detected at the same time.
なお、磁性金属膜体１としてアモルファス磁性金属膜又
はその積層体を用いることによってより高透磁率で磁気
特性に優れ且つ機械的ストレスに強い高信頼性のものが
得られる。Note that by using an amorphous magnetic metal film or a laminate thereof as the magnetic metal film 1, a highly reliable film having higher magnetic permeability, excellent magnetic properties, and strong resistance to mechanical stress can be obtained.
以上のように、この発明によれば磁性錘を設けた磁性金
属膜体が加速度の作用下で変位することによりその両側
の磁気回路の磁気抵抗を変化させ、その両側の検出コイ
ルに差動誘導電圧を生じるように構成したので、構造が
簡単となり、小型軽量化が計られると共に機械的な磨耗
が生じることなく極めて信頼性の高い低コストものとな
る効果がある。As described above, according to the present invention, the magnetic metal film provided with the magnetic weight changes the magnetic resistance of the magnetic circuits on both sides by displacing under the action of acceleration, and differential induction is applied to the detection coils on both sides. Since it is configured to generate a voltage, the structure is simple, it is small and lightweight, and there is no mechanical wear, making it extremely reliable and low cost.
第１図はこの発明の一実施例を示すＧセンサの断面図で
ある。
図中、■・・・磁性金属膜体、２・・・磁性錘、３ａ。
３ｂ・・・Ｅ型鉄心、４ａ、４ｂ・・・コイル集合体、
５ａ、５ｂ・・・ハウジング。FIG. 1 is a sectional view of a G sensor showing an embodiment of the present invention. In the figure, ■...Magnetic metal film body, 2...Magnetic weight, 3a. 3b... E type iron core, 4a, 4b... coil assembly,
5a, 5b...Housing.
Claims (3)
両側に対向配置された一対のＥ型鉄心と、該一対のＥ型
鉄心に各々内挿され、各々が励磁コイル及び検出コイル
から構成される一対のコイル集合体と、上記磁性金属膜
体、Ｅ型鉄心及びコイル集合体を内挿し固定保持するた
めのハウジングとを備えた加速度検出装置。(1) A magnetic metal film body with a magnetic weight provided in the center, a pair of E-type iron cores placed opposite to each other on both sides, and an excitation coil and a detection coil each inserted into the pair of E-type iron cores. An acceleration detection device comprising: a pair of coil assemblies constituted by; and a housing for inserting and fixing the magnetic metal film, the E-type iron core, and the coil assemblies.
成ることを特徴とする特許請求の範囲第１項記載の加速
度検出装置。(2) The acceleration detection device according to claim 1, wherein the magnetic metal film is made of an amorphous magnetic alloy.
層膜体から成ることを特徴とする特許請求の範囲第１項
記載の加速度検出装置。(3) The acceleration detecting device according to claim 1, wherein the magnetic metal film is made of a laminated film of an amorphous magnetic alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30198286A JPS63153476A (en) | 1986-12-17 | 1986-12-17 | Acceleration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30198286A JPS63153476A (en) | 1986-12-17 | 1986-12-17 | Acceleration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153476A true JPS63153476A (en) | 1988-06-25 |
Family
ID=17903461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30198286A Pending JPS63153476A (en) | 1986-12-17 | 1986-12-17 | Acceleration detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010025891A (en) * | 2008-07-24 | 2010-02-04 | Japan Aviation Electronics Industry Ltd | Acceleration sensor and servo accelerometer |
-
1986
- 1986-12-17 JP JP30198286A patent/JPS63153476A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010025891A (en) * | 2008-07-24 | 2010-02-04 | Japan Aviation Electronics Industry Ltd | Acceleration sensor and servo accelerometer |
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