JP2003097904A - Array-type sensor - Google Patents
Array-type sensorInfo
- Publication number
- JP2003097904A JP2003097904A JP2001292016A JP2001292016A JP2003097904A JP 2003097904 A JP2003097904 A JP 2003097904A JP 2001292016 A JP2001292016 A JP 2001292016A JP 2001292016 A JP2001292016 A JP 2001292016A JP 2003097904 A JP2003097904 A JP 2003097904A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- array
- sensors
- positioning member
- type sensor
- 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.)
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Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、車両の位置検出な
どに用いられる複数個の非接触型センサを所定位置に配
置して構成したアレイ型センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an array type sensor having a plurality of non-contact type sensors, which are used for detecting the position of a vehicle, arranged at predetermined positions.
【0002】[0002]
【従来の技術】走行レーン内の車両の位置を検出する手
法として、特開平8−201006号公報に開示されて
いる技術が知られている。この技術は、路面の走行レー
ン中央に沿って永久磁石を配置し、この永久磁石で形成
される磁界の強度を車両の横方向にアレイ状に配置され
る一連の磁界センサ(ピックアップコイル)によって検
出することで、この永久磁石からの車両の横方向の変位
を検出するものである。2. Description of the Related Art As a technique for detecting the position of a vehicle in a driving lane, a technique disclosed in Japanese Patent Laid-Open No. 8-201006 is known. In this technology, a permanent magnet is arranged along the center of the traveling lane on the road surface, and the strength of the magnetic field formed by this permanent magnet is detected by a series of magnetic field sensors (pickup coils) arranged in an array in the lateral direction of the vehicle. By doing so, the lateral displacement of the vehicle from this permanent magnet is detected.
【0003】[0003]
【発明が解決しようとする課題】こうしたアレイ型セン
サにおいては、各センサの出力をできるだけ均等に合わ
せることが必要となる。また、このように横方向の位置
検出に用いる場合には、センサ自体が位置ずれを起こす
と、位置検出の誤差を生ずる要因ともなる。In such an array type sensor, it is necessary to match the outputs of the sensors as evenly as possible. Further, when the sensor is used for lateral position detection as described above, if the sensor itself is displaced, it may cause a position detection error.
【0004】そこで本発明は、位置ずれやセンサの出力
変化を低減して高精度の位置検出が可能なアレイ型セン
サを提供することを課題とする。Therefore, it is an object of the present invention to provide an array type sensor capable of highly accurately detecting a position by reducing a positional deviation and a sensor output change.
【0005】[0005]
【課題を解決するための手段】上記課題を解決するた
め、本発明に係るアレイ型センサは、複数個の非接触型
センサを所定位置に配置して構成したアレイ型センサで
あって、各センサを位置決めして保持する高熱伝導性の
位置決め部材を備えていることを特徴とする。In order to solve the above problems, an array type sensor according to the present invention is an array type sensor in which a plurality of non-contact type sensors are arranged at predetermined positions. It is characterized by comprising a positioning member of high thermal conductivity for positioning and holding the.
【0006】このように各センサを高熱伝導性の位置決
め部材に配置することで、各センサの位置関係を正確に
規定することができるとともに、高熱伝導性の位置決め
部材が各センサの温度をほぼ均一に保つことで、センサ
の温度の違いによる出力変位の発生を抑制できる。これ
により、高精度の測定が可能となる。ここで、非接触セ
ンサとしては、磁気センサ、磁界センサのほか、電波セ
ンサ、超音波センサ、光学センサ等が含まれる。By arranging the sensors on the positioning member having high thermal conductivity in this manner, the positional relationship between the sensors can be accurately defined, and the positioning member having high thermal conductivity makes the temperature of each sensor substantially uniform. By keeping it at, it is possible to suppress the occurrence of output displacement due to the difference in temperature of the sensor. This enables highly accurate measurement. Here, the non-contact sensor includes a magnetic sensor, a magnetic field sensor, a radio wave sensor, an ultrasonic sensor, an optical sensor, and the like.
【0007】各センサは、予め計測された感度に応じて
位置決め部材に配置されていることが好ましい。感度に
応じてその配置順を決めることで、例えば、感度順に並
べて隣接するセンサ間の感度差を最小にすることによ
り、計測対象となる物性量が最大となる箇所の特定が容
易になり、高精度の測定が可能となる。Each sensor is preferably arranged on the positioning member according to the sensitivity measured in advance. By deciding the arrangement order according to the sensitivity, for example, by arranging them in the order of sensitivity to minimize the difference in sensitivity between adjacent sensors, it becomes easy to identify the location where the physical property to be measured becomes the maximum, The accuracy can be measured.
【0008】[0008]
【発明の実施の形態】以下、添付図面を参照して本発明
の好適な実施の形態について詳細に説明する。説明の理
解を容易にするため、各図面において同一の構成要素に
対しては可能な限り同一の参照番号を附し、重複する説
明は省略する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In order to facilitate understanding of the description, the same reference numerals are given to the same constituent elements in each drawing as much as possible in the drawings, and redundant description will be omitted.
【0009】図1は、本発明に係るアレイ型センサを用
いた車両の位置検出装置の検出部を示す全体構成図であ
り、図2は、そのアレイ型センサを下から見た図であ
り、図3は、そのIII−III線断面図である。FIG. 1 is an overall configuration diagram showing a detecting portion of a vehicle position detecting device using an array type sensor according to the present invention, and FIG. 2 is a diagram of the array type sensor seen from below. FIG. 3 is a sectional view taken along the line III-III.
【0010】本発明に係るアレイ型センサ9は、ホール
素子、ホールIC、半導体MR素子等の磁気抵抗素子、
MI素子等の磁気センサ1を多数個(例えば40〜60
個)、アルミニウム、銅等の高熱伝導性の位置決め部材
2に所定の間隔(1〜1.5cm間隔)で配置して構成
される。そして、各センサ1はその配線1bが位置決め
部材2の裏側に配置されるプリント基板4へと電気的に
接続されることで、各センサ1への電源供給を行うとと
もに、その出力信号が図示していない車両内部のECU
へと送られ処理される。The array type sensor 9 according to the present invention includes a Hall element, a Hall IC, a magnetic resistance element such as a semiconductor MR element,
A large number of magnetic sensors 1 such as MI elements (for example, 40 to 60)
Individual), aluminum, copper, etc., and arranged at a predetermined interval (1 to 1.5 cm interval) on the positioning member 2 having high thermal conductivity. Then, the wiring 1b of each sensor 1 is electrically connected to the printed circuit board 4 arranged on the back side of the positioning member 2, thereby supplying power to each sensor 1 and showing the output signal thereof. Not inside the vehicle ECU
Sent to and processed.
【0011】アレイ型センサ9は、筐体5に収容され、
蓋6で封止された上で、ブラケット7を介して車両10
の前方下部に取り付けられる。そして、路面20の走行
レーン中央に沿って配置される永久磁石等からなる磁界
マーカー21の発する磁界を検出するものである。The array type sensor 9 is housed in the housing 5,
After being sealed with the lid 6, the vehicle 10 is mounted via the bracket 7.
It is attached to the lower front part of. Then, the magnetic field generated by the magnetic field marker 21 composed of a permanent magnet or the like arranged along the center of the traveling lane on the road surface 20 is detected.
【0012】位置決め部材2には、所定の間隔でセンサ
1を収容するための窪みである位置決め溝2aが設けら
れており、その壁面2bに各センサ1の側壁が突き当た
るように接着剤3により固定することで、各センサ1は
所定の間隔で位置決め固定される。ここで、位置決め部
材2として前述したようなアルミニウム、銅等を用いる
ことで、位置決め溝2aおよび壁面2bの加工精度を向
上させることができ、高精度の位置決めが可能となる。
そのため、各センサ1を個別に車両10に固定する場合
と比較して、正確な位置調整を行うことができ、センサ
1の位置ずれを抑制することができるので、車両10の
位置検出精度も向上する。The positioning member 2 is provided with positioning grooves 2a, which are recesses for accommodating the sensors 1 at predetermined intervals, and is fixed with an adhesive 3 so that the side wall of each sensor 1 abuts the wall surface 2b. By doing so, each sensor 1 is positioned and fixed at a predetermined interval. Here, by using the above-mentioned aluminum, copper, or the like as the positioning member 2, it is possible to improve the processing accuracy of the positioning groove 2a and the wall surface 2b, and it is possible to perform highly accurate positioning.
Therefore, as compared with the case where each sensor 1 is individually fixed to the vehicle 10, accurate position adjustment can be performed and the positional deviation of the sensor 1 can be suppressed, so that the position detection accuracy of the vehicle 10 is also improved. To do.
【0013】さらに、センサ1は高熱伝導性の位置決め
部材2と面接触しているので、センサ1と位置決め部材
2との熱伝導によりセンサ1は位置決め部材2とほぼ等
温に維持され、さらに、位置決め部材2の内部温度分布
も小さく維持されるので、各センサ1の温度をほぼ均一
に保つことができる。その結果、温度変位によるセンサ
1間の出力変位を抑制することができる。Further, since the sensor 1 is in surface contact with the positioning member 2 having high thermal conductivity, the heat conduction between the sensor 1 and the positioning member 2 maintains the sensor 1 at substantially the same temperature as the positioning member 2, and the positioning is further performed. Since the internal temperature distribution of the member 2 is also kept small, the temperature of each sensor 1 can be kept substantially uniform. As a result, the output displacement between the sensors 1 due to the temperature displacement can be suppressed.
【0014】さらにセンサ1を以下に述べるようにその
感度に応じて配置することが好ましい。説明を簡単にす
るため、センサの配置数が5個の場合を例にとる。ま
ず、6個のセンサを用意し、同一の温度条件、磁束密度
でそれぞれのセンサの出力値(電圧)を測定する。その
結果が表1に示されるようになったとする。Further, it is preferable to arrange the sensor 1 according to its sensitivity as described below. In order to simplify the description, the case where the number of sensors arranged is 5 is taken as an example. First, six sensors are prepared, and the output value (voltage) of each sensor is measured under the same temperature condition and magnetic flux density. It is assumed that the result is as shown in Table 1.
【0015】[0015]
【表1】
ここで、他のセンサとの出力差が大きいセンサDのみを
除外し、その他のセンサをセンサ型アレイ9が車両10
に配置されたときに、車両10の右側から左側に向かっ
て、出力の小さい側から順に、つまり、センサF、セン
サB、センサA、センサC、センサEの順に取り付け
る。このように各センサを配置すると、隣接するセンサ
間の感度差を最小とすることができる。したがって、セ
ンサ出力を調整することなく生出力のまま測定を行って
も、センサの感度差による位置検出の誤り発生を抑制す
ることができる。したがって、センサの感度調整コスト
を低減することができる。また、この測定を使用頻度が
最も高いと予想される特定の温度条件、磁束密度で行う
ことで、この特定の条件、つまり使用頻度の高い条件下
での位置検出精度を特に向上させることもできる。[Table 1] Here, only the sensor D having a large output difference from the other sensors is excluded, and the other sensors are replaced by the sensor type array 9 in the vehicle 10.
When the vehicle 10 is installed in the vehicle, the vehicle 10 is attached from the right side to the left side in order from the side with the smallest output, that is, the sensor F, the sensor B, the sensor A, the sensor C, and the sensor E in this order. By arranging the sensors in this way, the difference in sensitivity between adjacent sensors can be minimized. Therefore, even if the raw output is measured without adjusting the sensor output, it is possible to suppress the occurrence of an error in position detection due to the difference in the sensitivity of the sensor. Therefore, the sensitivity adjustment cost of the sensor can be reduced. Further, by performing this measurement under a specific temperature condition and magnetic flux density that are expected to be most frequently used, it is possible to particularly improve the position detection accuracy under this particular condition, that is, a frequently used condition. .
【0016】ここで、センサの配置順は、上記の説明と
逆であってもよく、あるいは、中央に最も高感度あるい
は低感度のセンサを配置し、感度が山形あるいは谷型の
分布となるように配置してもよい。Here, the order of arranging the sensors may be opposite to that described above, or the sensor having the highest sensitivity or the lowest sensitivity may be arranged in the center so that the sensitivities have a mountain-shaped or valley-shaped distribution. It may be placed at.
【0017】以上の説明では、磁気センサの場合を説明
してきたが、非接触型のアレイ型センサ、例えば、電波
センサ、超音波センサ、光学センサ等についても本発明
は好適に適用できる。In the above description, the case of the magnetic sensor has been described, but the present invention can be suitably applied to a non-contact type array sensor such as a radio wave sensor, an ultrasonic sensor, an optical sensor, or the like.
【0018】[0018]
【発明の効果】以上説明したように本発明によれば、多
数のセンサを高熱伝導性の位置決め部材に配置すること
で、高精度で位置決めできるとともに、各センサの温度
をほぼ均一に維持して温度変位に伴う出力変位の発生を
抑制することができる。さらに、各センサの出力を予め
測定しておき、その出力に応じて隣接するセンサ間での
出力差が小さくなるように配置することで、センサの出
力調整を行わなくとも高精度の検出が可能となる。As described above, according to the present invention, by arranging a large number of sensors on a positioning member having high thermal conductivity, positioning can be performed with high accuracy and the temperature of each sensor is maintained substantially uniform. It is possible to suppress the occurrence of output displacement due to temperature displacement. Furthermore, by measuring the output of each sensor in advance and arranging so that the output difference between adjacent sensors will be small according to that output, highly accurate detection is possible without adjusting the output of the sensor. Becomes
【図1】本発明に係るアレイ型センサを用いた車両の位
置検出装置の検出部を示す全体構成図である。FIG. 1 is an overall configuration diagram showing a detection unit of a vehicle position detection device using an array type sensor according to the present invention.
【図2】図1のアレイ型センサを下から見た図である。FIG. 2 is a view of the array type sensor of FIG. 1 seen from below.
【図3】図2のIII−III線断面図である。3 is a sectional view taken along line III-III in FIG.
1…センサ、1a…センサ本体、1b…配線部、2…位
置決め部材、2a…位置決め溝、2b…壁面、3…接着
剤、4…プリント基板、5…筐体、6…蓋、7…ブラケ
ット、10…車両、20…路面、21…信号源。DESCRIPTION OF SYMBOLS 1 ... Sensor, 1a ... Sensor main body, 1b ... Wiring part, 2 ... Positioning member, 2a ... Positioning groove, 2b ... Wall surface, 3 ... Adhesive agent, 4 ... Printed circuit board, 5 ... Housing, 6 ... Lid, 7 ... Bracket 10 ... Vehicle, 20 ... Road surface, 21 ... Signal source.
フロントページの続き (72)発明者 武田 憲司 愛知県西尾市下羽角町岩谷14番地 株式会 社日本自動車部品総合研究所内 (72)発明者 伊藤 恒司 愛知県豊田市トヨタ町1番地 トヨタ自動 車株式会社内 Fターム(参考) 2F063 AA02 BA11 BB03 CB01 DA01 DC08 DD06 GA52 KA01 KA03 2F077 AA13 AA46 JJ00 UU15 VV02 VV11 VV31 VV33 Continued front page (72) Inventor Kenji Takeda 14 Iwatani Shimohakaku-cho, Nishio-shi, Aichi Stock Association Company Japan Auto Parts Research Institute (72) Inventor Tsuneji Ito 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Auto Car Co., Ltd. F term (reference) 2F063 AA02 BA11 BB03 CB01 DA01 DC08 DD06 GA52 KA01 KA03 2F077 AA13 AA46 JJ00 UU15 VV02 VV11 VV31 VV33
Claims (3)
置して構成したアレイ型センサであって、 各センサを位置決めして保持する高熱伝導性の位置決め
部材を備えていることを特徴とするアレイ型センサ。1. An array type sensor having a plurality of non-contact type sensors arranged at predetermined positions, comprising a positioning member of high thermal conductivity for positioning and holding each sensor. Array type sensor.
応じて前記位置決め部材に配置されていることを特徴と
する請求項1記載のアレイ型センサ。2. The array type sensor according to claim 1, wherein each of the sensors is arranged on the positioning member according to a previously measured sensitivity.
ることを特徴とする請求項2記載のアレイ型センサ。3. The array type sensor according to claim 2, wherein the respective sensors are arranged in order of sensitivity.
Priority Applications (1)
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JP2001292016A JP4812203B2 (en) | 2001-09-25 | 2001-09-25 | Array type sensor |
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Application Number | Priority Date | Filing Date | Title |
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JP2001292016A JP4812203B2 (en) | 2001-09-25 | 2001-09-25 | Array type sensor |
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JP2003097904A true JP2003097904A (en) | 2003-04-03 |
JP4812203B2 JP4812203B2 (en) | 2011-11-09 |
Family
ID=19114062
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JP2001292016A Expired - Fee Related JP4812203B2 (en) | 2001-09-25 | 2001-09-25 | Array type sensor |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010256171A (en) * | 2009-04-24 | 2010-11-11 | Murata Machinery Ltd | Mobile unit system |
JP2016106217A (en) * | 2010-05-31 | 2016-06-16 | アルセロルミタル・インベステイガシオン・イ・デサロジヨ・エセ・エレ | Method and device for measuring thickness of film layer of flowing strip |
CN109916287A (en) * | 2019-01-30 | 2019-06-21 | 西安维控自动化科技有限公司 | A kind of in-plane displancement sensor, displacement detecting method and system based on magnetic induction |
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Publication number | Priority date | Publication date | Assignee | Title |
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US10203194B2 (en) | 2010-05-31 | 2019-02-12 | Arcelormittal Investigacion Y Desarrollo, S.L. | Method and device for measuring the thickness of a coating layer on a running strip |
CN109916287A (en) * | 2019-01-30 | 2019-06-21 | 西安维控自动化科技有限公司 | A kind of in-plane displancement sensor, displacement detecting method and system based on magnetic induction |
CN109916287B (en) * | 2019-01-30 | 2020-11-27 | 西安维控自动化科技有限公司 | Planar displacement sensor based on magnetic induction, displacement detection method and system |
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