JPH112524A - Incorrect measurement preventing method and device for measuring measurement station - Google Patents
Incorrect measurement preventing method and device for measuring measurement stationInfo
- Publication number
- JPH112524A JPH112524A JP9172972A JP17297297A JPH112524A JP H112524 A JPH112524 A JP H112524A JP 9172972 A JP9172972 A JP 9172972A JP 17297297 A JP17297297 A JP 17297297A JP H112524 A JPH112524 A JP H112524A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- unit
- measurement
- light
- section
- 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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Links
- 238000005259 measurement Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims description 8
- 230000005484 gravity Effects 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、測定点指示部と計
測ヘッド部を用いて現場見取図を作成する位置計測作図
装置等に用いられ、追尾機能等により上記測定点指示部
に対し計測ヘッド部を正確に正対させた状態で行う測定
点計測の誤測定を防止するための方法及び装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a position measurement plotting apparatus for creating a site sketch using a measuring point indicating section and a measuring head section, and a measuring head section for the measuring point indicating section by a tracking function or the like. The present invention relates to a method and an apparatus for preventing an erroneous measurement of a measurement point measurement performed in a state in which the measurement point is correctly faced.
【0002】[0002]
【従来の技術】交通事故処理業務では、実況見分の際に
現場見取図の作成が行われており、この現場見取図を正
確・迅速に作成するために、近年では、位置計測作図装
置が用いられる。この位置計測作図装置は、従来から巻
尺を用いて行っていた事故現場の関係地点間の測定と見
取図の作成を現場で同時に行うことができる(特開平8
−122069号等)。この種の位置計測作図装置で
は、計測機側から離れた位置にある測定点にセットされ
る測定点指示部(ターゲット)に対し、計測機のヘッド
部が正確に正対するように追尾機能が設けられる。2. Description of the Related Art In a traffic accident handling business, a site plan is created at the time of watching a live broadcast. In recent years, a position measurement plotter has been used in order to create the site plan accurately and quickly. . This position measurement plotting apparatus can simultaneously perform measurement between related points at an accident site and creation of a sketch at the site, which has been conventionally performed using a tape measure (Japanese Patent Application Laid-Open No. H08-208,1992).
No. -12269). In this type of position measurement plotting device, a tracking function is provided so that the head of the measuring machine accurately faces the measuring point indicating unit (target) set at a measuring point at a position distant from the measuring machine. Can be
【0003】図7には、上記の追尾機能の一部の構成が
示されており、図示の反射鏡部1は測定点指示部に配置
される。この反射鏡部1は、離れた位置の計測ヘッド部
側の光波距離計から出力された測定光を反射するコーナ
ーキューブ反射鏡2を備えると共に、複数の発光素子が
円周上に等間隔で配置された発光部3を有しており、こ
の発光部3から出力される光が追尾光(捕捉光)として
用いられる。一方、計測ヘッド部には、上述のように、
光波距離計が設けられると共に、図示の受光部4が配置
されている。この受光部4は、図示のように、A部〜D
部に4分割されており、それぞれの分割領域で上記の追
尾光を検出することになる。FIG. 7 shows a partial configuration of the above-mentioned tracking function. The illustrated reflecting mirror unit 1 is arranged in a measuring point indicating unit. The reflecting mirror unit 1 includes a corner cube reflecting mirror 2 that reflects measurement light output from a lightwave distance meter on a measuring head unit side at a remote position, and a plurality of light emitting elements are arranged at equal intervals on a circumference. The light output from the light emitting unit 3 is used as tracking light (captured light). On the other hand, as described above,
An optical distance meter is provided, and a light receiving unit 4 shown in the figure is arranged. As shown in FIG.
It is divided into four parts, and the tracking light is detected in each divided area.
【0004】そして、上記の追尾光の検出に基づいて、
計測ヘッド部の追尾動作が行われる。即ち、この計測ヘ
ッド部の正面(光波距離計の正面)が測定点指示部の反
射鏡部1に正対する位置からの上下方向のずれ量は、例
えば受光部4のA部とB部の出力の加算値からC部とD
部の出力の加算値を引いた値から求められ、この引算値
が小さくなる俯仰方向に計測ヘッド部が動かされる。ま
た、左右方向のずれ量は、受光部4のA部とD部の加算
値からB部とC部の加算値を引いた値から求められ、こ
の引算値が小さくなる旋回方向に計測ヘッド部が回動さ
れる。このような俯仰方向、旋回方向の動作により、計
測ヘッド部の正面を正確に測定点指示部の反射鏡部1へ
向けることができる。Then, based on the detection of the tracking light,
The tracking operation of the measurement head unit is performed. That is, the amount of vertical displacement from the position where the front of the measurement head unit (the front of the lightwave distance meter) directly faces the reflecting mirror unit 1 of the measurement point indicating unit is, for example, the output of the A unit and the B unit of the light receiving unit 4. C and D from the sum of
The measurement head is moved in the elevation direction in which the subtraction value is obtained by subtracting the sum of the outputs of the sections. Further, the amount of deviation in the left-right direction is obtained from a value obtained by subtracting the added value of the B portion and the C portion from the added value of the A portion and the D portion of the light receiving unit 4, and the measuring head is moved in the turning direction in which the subtracted value becomes smaller. The part is rotated. By the operation in the raising and lowering directions, the front of the measuring head can be accurately directed to the reflecting mirror 1 of the measuring point indicating unit.
【0005】その後、光波距離計において測定点指示部
までの距離が測定され、この距離データ、計測ヘッド部
の上記俯仰角度及び旋回角度のデータ等に基づいて、測
定点の位置が3次元座標上の位置として求められる。こ
のようにして、必要な複数の測定点の位置を計測し、ま
た測定点等に関する道路情報、事故情報等を入力するこ
とにより作図処理が実行される。After that, the distance to the measuring point indicating section is measured by the lightwave distance meter, and the position of the measuring point is displayed on the three-dimensional coordinates based on the distance data, the data of the elevation angle and the turning angle of the measuring head section, and the like. Is required. In this manner, the drawing processing is executed by measuring the positions of a plurality of necessary measurement points and inputting road information, accident information, and the like regarding the measurement points and the like.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、上記位
置計測作図装置の追尾機能では、測定点指示部の発光部
からの光を検出することから、ショーウインド、水溜ま
り等で反射した反射像を捉えることがあるという問題が
ある。即ち、図8に示されるように、測定点指示部4を
ショーウインド6や水溜まり7の近くに配置した場合
は、垂直反射面であるショーウインド6に反射鏡部1の
反射像G1 が映り、水平反射面である水溜まり7に反射
像G2 が映ることになる。このため、この反射像G1 ,
G2 の発光部2の追尾光を検出することが生じ、この場
合には反射像G1 ,G2 に正対してしまう。However, since the tracking function of the position measuring and plotting device detects light from the light emitting section of the measuring point indicating section, it can capture a reflected image reflected by a show window, a puddle or the like. There is a problem that there is. That is, as shown in FIG. 8, when the measuring point indicating unit 4 is arranged near the show window 6 or the water pool 7, the reflected image G1 of the reflecting mirror unit 1 is reflected on the show window 6, which is a vertical reflecting surface, The reflection image G2 is reflected on the puddle 7 which is a horizontal reflection surface. Therefore, the reflection images G1,
The tracking light of the light emitting unit 2 of G2 may be detected, and in this case, the reflected images G1 and G2 are directly opposed.
【0007】そして、光波距離計では、その測定光がシ
ョーウインド6や水溜まり7を介して反射鏡部1へ伝送
され、コーナーキューブ反射鏡2からの反射光を受光し
て距離計測が通常通り行われることになる。従って、誤
った測定点を計測するだけでなく、距離自体の誤測定も
生じることになる。In the lightwave distance meter, the measurement light is transmitted to the reflecting mirror unit 1 via the show window 6 and the puddle 7, and the reflected light from the corner cube reflecting mirror 2 is received to perform the distance measurement as usual. Will be Therefore, not only an erroneous measurement point is measured, but also an erroneous measurement of the distance itself occurs.
【0008】また、図9(A)に示されように、反射鏡
部1の発光部3が建物や樹木等の障害物8で隠れる場合
がある。例えば、反射鏡部1の左下側(正面から見て)
がケラレた場合を考えると、受光部4では、図8(B)
のように、発光部3の重心位置が右上側に移動する。即
ち、この状態で計測ヘッド部が反射鏡部1に正対したと
判定することになり、追尾が正確に行われず、同様に計
測誤差が生じてしまう。Further, as shown in FIG. 9A, the light emitting section 3 of the reflecting mirror section 1 may be hidden by an obstacle 8 such as a building or a tree. For example, the lower left side of the reflecting mirror unit 1 (as viewed from the front)
Considering the case where vignetting occurs, in the light receiving section 4, FIG.
As shown in the above, the position of the center of gravity of the light emitting unit 3 moves to the upper right. That is, in this state, it is determined that the measurement head unit has faced the reflecting mirror unit 1 and tracking is not performed accurately, and a measurement error similarly occurs.
【0009】本発明は上記問題点に鑑みてなされたもの
であり、その目的は、光信号のケラレ等による重心移動
があった場合、また反射像が存在する場合でも、これら
の判定を行うことにより、誤測定を防止した測定点計測
の誤測定防止方法及び装置を提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to make these determinations even when the center of gravity moves due to vignetting of an optical signal or when a reflected image exists. Accordingly, it is an object of the present invention to provide a method and apparatus for preventing erroneous measurement of measurement point measurement in which erroneous measurement is prevented.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するため
に、請求項1に係る発明は、測定点指示部の発光部から
出力された光信号を計測ヘッド部の受光部で受信し、上
記測定ヘッド部を上記測定点指示部に正対させて測定点
までの距離を計測する方法において、上記発光部では、
領域分割したときの対角位置にある発光素子を対角発光
部として一組とし、異なる組の上記対角発光部から異な
る光信号を送信し、上記受光部では、上記発光部の分割
領域に対応して分割された複数領域の受光素子で上記光
信号を受信し、上記受光素子のそれぞれで得られた検出
信号を比較処理し、かつこの比較値が所定のスレッショ
ルドレベルを超えているか否かを判別することにより、
上記測定点指示部の発光部の重心移動判定を行うことを
特徴とする。請求項2に係る発明は、測定点指示部の発
光部から出力された光信号を計測ヘッド部の受光部で受
信し、上記測定ヘッド部を上記測定点指示部に正対させ
て測定点までの距離を計測する装置において、上記測定
点指示部に配置され、複数の発光素子を備えた発光部
と、この発光部を領域分割したときの対角位置にある発
光素子を対角発光部として一組とし、異なる組の上記対
角発光部から異なる光信号を送信する点灯回路と、上記
発光部の領域分割に対応して分割された複数領域の受光
素子で上記光信号を受信する受光部と、上記受光素子の
それぞれで得られた検出信号を比較処理し、かつこの比
較値が所定のスレッショルドレベルを超えているか否か
を判別し、上記測定点指示部の発光部の重心移動判定を
行うと同時に、上記測定点指示部の発光部の反射像判定
を行う比較演算回路と、を設けたことを特徴とする。According to a first aspect of the present invention, an optical signal output from a light emitting section of a measuring point indicating section is received by a light receiving section of a measuring head section. In the method of measuring the distance to the measurement point by directly facing the measurement head unit to the measurement point indicating unit, in the light emitting unit,
The light emitting elements at the diagonal positions when the area is divided are set as a diagonal light emitting unit, and different light signals are transmitted from different sets of the diagonal light emitting units. The light signals are received by the light-receiving elements in a plurality of areas correspondingly divided, and the detection signals obtained by each of the light-receiving elements are compared, and whether or not the comparison value exceeds a predetermined threshold level By determining
The center of gravity of the light emitting unit of the measurement point indicating unit is determined. The invention according to claim 2 is that the light signal output from the light emitting section of the measuring point indicating section is received by the light receiving section of the measuring head section, and the measuring head section is directly opposed to the measuring point indicating section to the measuring point. In the device for measuring the distance of the light emitting unit disposed in the measurement point indicating unit, the light emitting unit having a plurality of light emitting elements, and a light emitting element at a diagonal position when the light emitting unit is divided into regions as a diagonal light emitting unit A lighting circuit for transmitting different optical signals from different sets of the diagonal light emitting units as a set, and a light receiving unit for receiving the optical signals with a plurality of light receiving elements divided corresponding to the area division of the light emitting unit. And comparing the detection signals obtained by the respective light receiving elements, and determining whether or not the comparison value exceeds a predetermined threshold level, and determining the center of gravity shift of the light emitting unit of the measurement point indicating unit. At the same time, the measurement point indicator A comparison operation circuit for performing a reflection image determination of the light emitting portion, characterized in that the provided.
【0011】上記の構成によれば、例えば発光部を4分
割した場合の2組の対角発光部から、異なるパルスの光
信号が送信され、受光部では、この光信号が4分割した
受光素子で受信されることになり、この4個の受光素子
で得られた検出信号が比較処理される。この比較処理
は、例えば左右の受光素子間、上下の受光素子間で検出
信号の引き算処理を行い、これら4つの差信号の状態を
みることにより、上下又は左右で発光部の位置に反転が
生じていないかが判定される。According to the above arrangement, for example, two sets of diagonal light emitting parts when the light emitting part is divided into four parts transmit optical signals of different pulses, and the light receiving part divides the light signal into four parts. , And the detection signals obtained by the four light receiving elements are compared. In this comparison processing, for example, the detection signal is subtracted between the right and left light receiving elements and between the upper and lower light receiving elements, and the state of the four difference signals is checked, whereby the position of the light emitting unit is inverted at the upper and lower sides or at the left and right sides. It is determined whether it is not.
【0012】また、上記の比較処理において、左右及び
上下の受光素子間で引き算処理が行われた上記4つの差
信号につき、所定のスレッショルドレベルを超えている
か否かの判別をすることにより、発光部の重心移動判定
が行われる。即ち、障害物によって光信号がケラレてい
る場合は、上記の差信号にバラツキ(一定でない状態)
が生じるので、このバラツキ状態を判別することによ
り、重心移動状態が判定できることになる。Further, in the above-described comparison processing, it is determined whether or not the four difference signals subjected to the subtraction processing between the left and right and upper and lower light receiving elements exceed a predetermined threshold level. The center of gravity of the section is determined. That is, when the optical signal is vignetted by an obstacle, the difference signal varies (is not constant).
Therefore, the state of movement of the center of gravity can be determined by determining the variation state.
【0013】[0013]
【発明の実施の形態】図1乃至図3には、実施形態の一
例である測定点計測の誤測定防止方法及び装置の構成が
示されており、まず図2により装置全体の概略構成を説
明する。道路等の測定地点にセットされる測定点指示部
10は、指示棒11及び反射鏡部12から構成され、こ
の反射鏡部12に、後述する計測機側の光波距離計から
出力される測定光を反射させるコーナーキューブ反射鏡
14と、この反射鏡14の外周部に配置され、追尾光
(捕捉光)及び通信用光信号を送出する発光部(LED
等)15が設けられる。そして、この発光部15を点灯
制御する点灯回路16が配置される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show a method and an apparatus for preventing erroneous measurement of a measuring point as an example of an embodiment. First, FIG. I do. A measuring point indicating unit 10 set at a measuring point such as a road is composed of an indicating rod 11 and a reflecting mirror unit 12, and the measuring light output from a measuring device-side lightwave distance meter described later is applied to the reflecting mirror unit 12. And a light emitting unit (LED) disposed on the outer periphery of the reflecting mirror 14 for transmitting tracking light (captured light) and a communication optical signal.
Etc.) 15 are provided. Then, a lighting circuit 16 for controlling lighting of the light emitting unit 15 is provided.
【0014】即ち、図3に示されるように、上記発光部
15は例えば24個の発光素子を円周上に等間隔で配置
した構成とされ、これらの発光素子の個々の点灯制御が
上記点灯回路16で行われる。当該例では、上記発光部
15において、その円周領域を指示棒11の配置方向と
一致する垂直線と水平線で4分割し、90度毎の領域と
する。そして、図示されるように、正面を見て左上部か
らA部、B部、C部、D部とすると、対角位置となるA
部及びC部とB部及びD部の2組の対角発光部ができる
が、上記点灯回路16はこの対角発光部(A,C)と
(B,D)から、異なる光信号を出力するように点灯制
御する[図4(A),(B)]。That is, as shown in FIG. 3, the light emitting section 15 has a structure in which, for example, 24 light emitting elements are arranged at equal intervals on a circumference, and the lighting control of each of these light emitting elements is performed by the lighting control. This is performed by the circuit 16. In this example, in the light emitting section 15, the circumferential area is divided into four by a vertical line and a horizontal line that coincide with the direction in which the pointing rod 11 is arranged, and the area is set to every 90 degrees. Then, as shown in the figure, when the front is viewed as A, B, C, and D from the upper left, a diagonal position A is obtained.
The lighting circuit 16 outputs different optical signals from the diagonal light emitting units (A, C) and (B, D). (FIGS. 4A and 4B).
【0015】一方、計測機側では、車等に搭載される架
台18に計測ヘッド部20が支持されており、この計測
ヘッド部20は、俯仰方向、旋回方向に回動可能に構成
される。このヘッド部20内には、TVカメラ21、光
波距離計22、受光部23及び追尾制御等を行う演算制
御部24が配置され、この演算制御部24には、反射像
判定、重心移動判定を行う比較演算が設けられる。ま
た、図示していないが、上記TVカメラ21で捉えられ
た映像を表示するモニタや、計測データに基づいて見取
図作成のための処理をする作図演算部(コンピュー
タ)、計測操作をする操作部等が設けられる。On the other hand, on the measuring machine side, a measuring head section 20 is supported by a gantry 18 mounted on a car or the like, and the measuring head section 20 is configured to be rotatable in a raising direction and a turning direction. In the head unit 20, a TV camera 21, an optical distance meter 22, a light receiving unit 23, and a calculation control unit 24 for performing tracking control and the like are arranged. The calculation control unit 24 performs a reflection image determination and a gravity center movement determination. A comparison operation to be performed is provided. Although not shown, a monitor for displaying an image captured by the TV camera 21, a drawing operation unit (computer) for performing a process for creating a sketch based on measurement data, an operation unit for performing a measurement operation, and the like. Is provided.
【0016】上記の距離計測計22は、測定光を出力
し、上記コーナーキューブ反射鏡14から反射された光
を受光して、上記測定点までの距離を計測できるもので
ある。上記受光部23は、図3(B)〜(D)に示され
るように正方形を垂直線及び水平線で均等に4分割した
受光素子23A〜23Dからなり、この受光素子23A
は上記発光部15のA部、23Bは発光部15のB部、
23CはC部、23DはD部からの光信号を受光するこ
とになる。The distance meter 22 outputs measurement light, receives the light reflected from the corner cube reflecting mirror 14, and measures the distance to the measurement point. As shown in FIGS. 3B to 3D, the light receiving section 23 includes light receiving elements 23A to 23D obtained by equally dividing a square into four parts by vertical lines and horizontal lines.
Is an A portion of the light emitting portion 15, 23B is a B portion of the light emitting portion 15,
23C receives the optical signal from the C section and 23D receives the optical signal from the D section.
【0017】図1において、上記演算制御部24内の比
較演算回路として、上記4個の受光素子23A〜23D
には、演算増幅回路26A〜26Dが接続され、この演
算増幅回路26の後段に、ずれ量検出回路27と差検出
回路28、そして反射像及び重心移動の判定を行う判定
回路29が設けられる。上記のずれ量検出回路27で
は、上記受光素子23A,23B,23C,23Dの出
力をVa,Vb,Vc,Vdとすると、(Va+Vb)
−(Vc+Vd)の演算により、上下方向のずれ量(正
対位置に対するずれ量)、即ち上半分の受光量と下半分
の受光量との差を求める。一方、(Va+Vd)−(V
b+Vc)の演算により、左右方向のずれ量、即ち左半
分の受光量と右半分の受光量との差を求める。そして、
これらの差値により上下(俯仰)回転制御及び左右(旋
回)回転制御が行われ、正負で決定される回転方向に計
測ヘッド部20が回転駆動される。In FIG. 1, the four light receiving elements 23A to 23D serve as a comparison operation circuit in the operation control unit 24.
Are connected to operational amplifier circuits 26A to 26D. A shift amount detecting circuit 27, a difference detecting circuit 28, and a determining circuit 29 for determining the reflection image and the movement of the center of gravity are provided downstream of the operational amplifier circuit 26. In the shift amount detection circuit 27, if the outputs of the light receiving elements 23A, 23B, 23C, and 23D are Va, Vb, Vc, and Vd, (Va + Vb)
By the calculation of-(Vc + Vd), the amount of deviation in the vertical direction (the amount of deviation from the directly-facing position), that is, the difference between the upper half received light amount and the lower half received light amount is obtained. On the other hand, (Va + Vd)-(V
b + Vc), the amount of shift in the left-right direction, that is, the difference between the left half received light amount and the right half received light amount is obtained. And
Up / down (elevation) rotation control and left / right (turning) rotation control are performed based on these difference values, and the measurement head unit 20 is driven to rotate in a rotation direction determined by positive or negative.
【0018】また、上記の差検出回路28では、上記受
光素子23A〜23Dの出力Va〜Vdに対し、Va−
Vb、Vc−Vd、Va−Vd,Vc−Vbの引き算処
理による差信号が検出される。そして、判定回路29で
は、この全ての差信号の論理積(アンド条件)をとるこ
とにより、反射像を判定する。即ち、反射像ではなく正
規な発光部15であれば、全て所定レベルの差信号とな
るので、論理積の結果が1となるが、反射像である場合
は、全て0となる差信号となるので、論理積の結果が0
となる。In the difference detection circuit 28, the output Va-Vd of the light receiving elements 23A-23D is applied to the Va-Vd.
Difference signals obtained by subtraction processing of Vb, Vc-Vd, Va-Vd, and Vc-Vb are detected. Then, the determination circuit 29 determines the reflection image by calculating the logical product (AND condition) of all the difference signals. In other words, if the light emitting unit 15 is not the reflection image but the normal light emitting unit 15, the difference signal is all at a predetermined level. Therefore, the result of the logical product is 1, but if the image is a reflection image, the difference signal is all 0. Therefore, the result of the logical product is 0
Becomes
【0019】また、これらの差信号につき、所定のスレ
ッショルドレベルを超えているか否かを検出し、この結
果に対し論理積をとることにより、重心移動状態を判定
する。即ち、上記の場合と同様に、正規の発光部15で
あれば、上記差信号が上記スレッショルドレベルを超え
るので、論理積の結果が1となるが、重心が移動してい
る場合は、差信号間にアンバランスが生じ、上記スレッ
ショルドレベルを超えない信号が存在して論理積の結果
が0となる。Further, for these difference signals, it is detected whether or not the difference signal exceeds a predetermined threshold level, and the result of the detection is ANDed to determine the state of movement of the center of gravity. That is, as in the case described above, in the case of the regular light emitting unit 15, since the difference signal exceeds the threshold level, the result of the logical product is 1, but when the center of gravity is shifted, the difference signal An imbalance occurs between them, and there is a signal that does not exceed the threshold level, and the result of the logical product becomes zero.
【0020】実施形態例は以上の構成からなり、その作
用を図4乃至図6を参照しながら説明する。図2の測定
点指示部10では、点灯回路16の制御により発光部1
5の対角発光部であるA部及びC部から、図4(A)に
示されるパルス信号(光信号)が出力され、このパルス
の中には、通信用信号が含められるようになっている。
一方、もう一組の対角発光部であるB部及びD部から
は、図4(B)に示される一定周期のパルス信号が出力
される。この光信号は、通常、図3(B)の状態で計測
ヘッド部20の受光部23で捉えられる。即ち、図3
(A)に示されるように、発光部15のA部及びC部か
ら出力される光信号を黒丸[図4(A)の信号]、その
他を白丸[図4(B)の信号]で表すと、正常なときは
図3(B)に示されるように、対応した受光素子23A
〜23Dで受光される。The embodiment has the above configuration, and its operation will be described with reference to FIGS. In the measurement point indicating unit 10 of FIG.
A pulse signal (optical signal) shown in FIG. 4A is output from the diagonal light-emitting units A and C of FIG. 5, and a communication signal is included in this pulse. I have.
On the other hand, pulse signals having a constant period shown in FIG. 4B are output from the other pair of diagonal light emitting units B and D. This optical signal is normally captured by the light receiving unit 23 of the measurement head unit 20 in the state of FIG. That is, FIG.
As shown in (A), the optical signals output from the A and C portions of the light emitting section 15 are represented by black circles (the signal in FIG. 4A), and the others are represented by white circles (the signal in FIG. 4B). And, if normal, the corresponding light receiving element 23A as shown in FIG.
-23D.
【0021】そして、図1で説明したように、4個の受
光素子23A〜23Dで得られた受信信号に基づいて、
ずれ量検出回路27により、計測ヘッド部20が反射鏡
部12へ正対する位置からの上下方向又は左右方向のず
れ量が検出される。即ち、上述したように、(Va+V
b)−(Vc+Vd)の演算により、上下方向のずれ量
が検出され、例えばこの演算値が負の場合は上方向へ、
正の場合は下方向へ駆動され、この値が0になるように
計測ヘッド部20が動かされる。一方、(Va+Vd)
−(Vb+Vc)の演算により、左右方向のずれ量が検
出され、例えばこの演算値が正の場合は右方向へ、負の
場合は左方向へ旋回することになる。このような追尾動
作により、計測ヘッド部20が反射鏡部12へ正確に正
対することになる。Then, as described with reference to FIG. 1, based on the reception signals obtained by the four light receiving elements 23A to 23D,
The shift amount detection circuit 27 detects the shift amount in the vertical direction or the horizontal direction from the position where the measurement head unit 20 faces the reflecting mirror unit 12. That is, as described above, (Va + V
b) By the calculation of-(Vc + Vd), the amount of deviation in the up and down direction is detected.
If the value is positive, the head is driven downward, and the measurement head unit 20 is moved so that this value becomes zero. On the other hand, (Va + Vd)
By the calculation of-(Vb + Vc), the amount of deviation in the left-right direction is detected. For example, when the calculated value is positive, the vehicle turns to the right, and when the calculated value is negative, the vehicle turns to the left. By such a tracking operation, the measuring head unit 20 accurately faces the reflecting mirror unit 12.
【0022】次に、図1の差検出回路28及び判定回路
29では、反射像及び重心移動状態の検出が行われる。
即ち上述したように、この差検出回路28では、Va−
Vb、Vc−Vd、Va−Vd,Vc−Vbの引き算処
理が行われるが、これは全て、図4(A)の信号から図
4(B)の信号を引き算することであり、正規な発光部
15を捉えている時には、上記の差信号は、図4(C)
〜(F)に示されるように、全て同一の信号となる。従
って、判定回路29で論理積(アンド)を演算すると、
出力が1となり、正常な状態であることが確認される。Next, the difference detection circuit 28 and the determination circuit 29 in FIG. 1 detect the reflection image and the state of movement of the center of gravity.
That is, as described above, in this difference detection circuit 28, Va−
The subtraction processing of Vb, Vc-Vd, Va-Vd, and Vc-Vb is performed. All of the subtraction processing is to subtract the signal of FIG. 4B from the signal of FIG. When capturing the part 15, the difference signal is as shown in FIG.
(F), all signals are the same. Therefore, when a logical product (AND) is calculated by the determination circuit 29,
The output becomes 1, confirming that it is in a normal state.
【0023】一方、発光部15の反射像が捉えられてい
る場合は、図3(C)に示されるように、黒丸の図4
(A)信号が受光素子23のB部及びD部で受信され、
白丸の図4(B)の信号が受光素子23のA部及びC部
で受信されるので、上記差信号は、図4(G)〜(J)
に示されるように、0の信号となる。なお、ここでは負
の成分は出力されない構成となっている。従って、判定
回路29で論理積を演算すると、出力が0となり、反射
像に追尾していることが判定され、この場合は、追尾を
やり直すことになる。On the other hand, when the reflected image of the light emitting section 15 is captured, as shown in FIG.
(A) The signal is received by the B section and the D section of the light receiving element 23,
Since the signals of the white circles in FIG. 4B are received by the A and C portions of the light receiving element 23, the difference signals are represented by FIGS. 4G to 4J.
As shown in FIG. Here, the negative component is not output. Therefore, when the logical product is calculated by the determination circuit 29, the output becomes 0, and it is determined that the vehicle is tracking the reflected image. In this case, the tracking is performed again.
【0024】また、重心移動の判定でも、図5(C)〜
(F)に示されるように、上記の差検出回路28の出力
信号が用いられ、この差信号に対し、所定のスレッショ
ルドレベルLsを超えているか否かの判別が行われる。
この図5は、正常な時の検出状態であり、図4の場合と
同様に、同一レベルの差信号が得られており、これらの
信号は全てスレッショルドレベルLsを超えることにな
る。従って、判定回路29で論理積(アンド)を演算す
ると、出力が1となり、正常な状態であることが確認さ
れる。In the determination of the movement of the center of gravity, FIG.
As shown in (F), the output signal of the difference detection circuit 28 is used, and it is determined whether or not the difference signal exceeds a predetermined threshold level Ls.
FIG. 5 shows a detection state in a normal state. Similar to the case of FIG. 4, difference signals of the same level are obtained, and these signals all exceed the threshold level Ls. Therefore, when the logical product (AND) is calculated by the determination circuit 29, the output becomes 1, confirming that the circuit is in a normal state.
【0025】一方、障害物の存在等により、例えば図9
で示したように、発光部15の左下側がケラレた場合
は、図3(D)に示されるように、受光部23において
受光像が右上に移動し、重心移動が生じた状態で追尾動
作が終了する。そして、この場合は、各受光素子23A
〜23Dにおいて、黒丸の信号[図4(A)の信号]と
白丸の信号[図4(B)の信号]が混在して受信され、
図6(A)〜(D)に示されるように、この受信信号は
レベルにバラツキのある信号となる。On the other hand, for example, FIG.
When the lower left side of the light emitting unit 15 is vignetted, as shown in FIG. 3, the light receiving image moves to the upper right in the light receiving unit 23 as shown in FIG. finish. In this case, each light receiving element 23A
23D, the signal of the black circle [the signal of FIG. 4A] and the signal of the white circle [the signal of FIG.
As shown in FIGS. 6A to 6D, the received signal is a signal having a level variation.
【0026】このため、上記差検出回路28のVa−V
b、Vc−Vd、Va−Vd,Vc−Vbの引き算処理
の結果にも、図6(E)〜(H)に示されるようにバラ
ツキが生じ、この例で上記スレッショルドレベルLsを
超えるのは、(E)と(H)の場合のみとなる。従っ
て、判定回路29で論理積を演算すると、出力が0とな
り、発光部15の重心が移動していることが判定され
る。この重心移動状態が判定された場合は、計測表示部
の表示や警告ブザー等でこの状態を報知することにな
る。For this reason, Va-V of the difference detection circuit 28 is used.
The results of the subtraction processing of b, Vc-Vd, Va-Vd, and Vc-Vb also have variations as shown in FIGS. 6 (E) to 6 (H), and in this example, the reason for exceeding the threshold level Ls is as follows. , (E) and (H). Therefore, when the logical product is calculated by the determination circuit 29, the output becomes 0, and it is determined that the center of gravity of the light emitting unit 15 is moving. When the state of movement of the center of gravity is determined, this state is notified by a display on the measurement display unit or a warning buzzer.
【0027】[0027]
【発明の効果】以上説明したように、本発明によれば、
測定点指示部の発光部では、分割部における例えば2組
の対角発光部から異なる光信号を送信し、計測ヘッド部
の受光部では、例えば4分割の受光素子で上記光信号を
受信し、これらの検出信号を比較し、この比較値につき
所定のスレッショルドレベルを超えているか否かの判別
をすることにより、上記発光部の重心移動の判定を行う
ようにしたので、障害物等による発光部のケラレ等を把
握することができ、これに起因する誤測定が防止可能と
なる。As described above, according to the present invention,
The light emitting unit of the measurement point indicating unit transmits different optical signals from, for example, two pairs of diagonal light emitting units in the dividing unit, and the light receiving unit of the measuring head unit receives the optical signal by, for example, a quadrant light receiving element. By comparing these detection signals and determining whether or not the comparison value exceeds a predetermined threshold level, it is determined whether or not the center of gravity of the light emitting unit is shifted. Vignetting can be grasped, and erroneous measurement due to this can be prevented.
【0028】また、上記の比較演算処理において、上記
の重心移動の検出と共に、上記4分割受光素子からの検
出信号に基づき上記発光部の反射像判定を行うので、シ
ョーウインドや水溜まり等の反射像を測定することを防
止できる。In addition, in the above-mentioned comparison operation processing, the reflection image judgment of the light emitting section is performed based on the detection signal from the four-division light receiving element, together with the detection of the above-mentioned movement of the center of gravity. Can be prevented from being measured.
【図1】本発明の実施形態例に係る測定点計測の誤測定
防止装置の構成を示すブロック図である。FIG. 1 is a block diagram illustrating a configuration of a device for preventing erroneous measurement of measurement point measurement according to an embodiment of the present invention.
【図2】実施形態例の装置を適用する位置計測作図装置
の概略構成を示すブロック図である。FIG. 2 is a block diagram illustrating a schematic configuration of a position measurement plotting apparatus to which the apparatus according to the embodiment is applied.
【図3】実施形態例の測定点指示部の構成及び計測ヘッ
ド部の受光部での受光状態を示す図である。FIG. 3 is a diagram illustrating a configuration of a measurement point indicating unit and a light receiving state of a light receiving unit of a measurement head unit according to the embodiment.
【図4】実施形態例において反射像を判定する場合の動
作を示す波形図である。FIG. 4 is a waveform chart showing an operation when a reflected image is determined in the embodiment.
【図5】実施形態例において重心移動の判定をする場合
の動作を示し、重心移動がない場合の波形図である。FIG. 5 is a waveform diagram showing an operation when determining the movement of the center of gravity in the embodiment and when there is no movement of the center of gravity.
【図6】実施形態例において重心移動の判定をする場合
の動作を示し、重心移動がある場合の波形図である。FIG. 6 is a waveform chart showing an operation when determining the movement of the center of gravity in the embodiment, and when there is a movement of the center of gravity.
【図7】従来において、追尾機能の構成を示す説明図で
ある。FIG. 7 is an explanatory diagram showing a configuration of a tracking function in the related art.
【図8】追尾動作時の測定点指示部測の状態を示す図で
ある。FIG. 8 is a diagram showing a state of a measurement point indicating unit measurement during a tracking operation.
【図9】従来の測定点指示部が障害物でケラレる状態
[図(A)]及びこの状態のとき計測ヘッド部の受光部
で得られる受光状態を示す図である。FIG. 9 is a diagram illustrating a conventional state in which a measurement point indicating unit is vignetted by an obstacle [FIG. 9A] and a light receiving state obtained by a light receiving unit of a measurement head unit in this state.
10,5 … 測定点指示部、 12,1 … 反射鏡部、 15,3 … 発光部、 16 … 点灯回路、 22 … 光波距離計、 23(A,B,C,D),4 … 受光部、 24 … 演算制御回路、 27 … ずれ量検出回路、 28 … 差検出回路、 29 … 判定回路。 10, 5 ... measurement point indicating unit, 12, 1 ... reflecting mirror unit, 15, 3 ... light emitting unit, 16 ... lighting circuit, 22 ... light wave distance meter, 23 (A, B, C, D), 4 ... light receiving unit , 24 ... arithmetic control circuit, 27 ... shift amount detection circuit, 28 ... difference detection circuit, 29 ... judgment circuit.
Claims (2)
信号を計測ヘッド部の受光部で受信し、上記測定ヘッド
部を上記測定点指示部に正対させて測定点までの距離を
計測する方法において、 上記発光部では、領域分割したときの対角位置にある発
光素子を対角発光部として一組とし、異なる組の上記対
角発光部から異なる光信号を送信し、 上記受光部では、上記発光部の分割領域に対応して分割
された複数領域の受光素子で上記光信号を受信し、 上記受光素子のそれぞれで得られた検出信号を比較処理
し、かつこの比較値が所定のスレッショルドレベルを超
えているか否かを判別することにより、上記測定点指示
部の発光部の重心移動判定を行うことを特徴とする測定
点計測の誤測定防止方法。An optical signal output from a light emitting section of a measuring point indicating section is received by a light receiving section of a measuring head section, and the measuring head section is directly opposed to the measuring point indicating section to determine a distance to a measuring point. In the measuring method, in the light emitting unit, light emitting elements at diagonal positions when the area is divided are set as a diagonal light emitting unit, and different light signals are transmitted from different sets of the diagonal light emitting units. In the unit, the light signal is received by a plurality of light receiving elements divided corresponding to the divided area of the light emitting unit, the detection signals obtained by each of the light receiving elements are compared, and the comparison value is A method for preventing erroneous measurement of measurement point measurement, comprising determining whether or not the center of gravity of the light emitting unit of the measurement point indicating unit is determined by determining whether or not a predetermined threshold level is exceeded.
信号を計測ヘッド部の受光部で受信し、上記測定ヘッド
部を上記測定点指示部に正対させて測定点までの距離を
計測する装置において、 上記測定点指示部に配置され、複数の発光素子を備えた
発光部と、 この発光部を領域分割したときの対角位置にある発光素
子を対角発光部として一組とし、異なる組の上記対角発
光部から異なる光信号を送信する点灯回路と、 上記発光部の領域分割に対応して分割された複数領域の
受光素子で上記光信号を受信する受光部と、 上記受光素子のそれぞれで得られた検出信号を比較処理
し、かつこの比較値が所定のスレッショルドレベルを超
えているか否かを判別し、上記測定点指示部の発光部の
重心移動判定を行うと同時に、上記測定点指示部の発光
部の反射像判定を行う比較演算回路と、を設けたことを
特徴とする測定点計測の誤測定防止装置。2. An optical signal output from a light emitting section of a measuring point indicating section is received by a light receiving section of a measuring head section, and the measuring head section is directly opposed to the measuring point indicating section to determine a distance to a measuring point. In the measurement device, a light emitting unit disposed on the measurement point indicating unit and including a plurality of light emitting elements, and a light emitting element at a diagonal position when the light emitting unit is divided into regions is set as a diagonal light emitting unit. A lighting circuit for transmitting a different optical signal from a different set of the diagonal light emitting units; a light receiving unit for receiving the optical signal with a plurality of light receiving elements divided corresponding to the area division of the light emitting unit; The detection signals obtained by each of the light receiving elements are compared, and whether or not the comparison value exceeds a predetermined threshold level is determined. , The light emission of the measurement point indicator Erroneous measurement prevention device of the measuring point measured, characterized and comparison operation circuit for performing a reflection image determination, that was provided for.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9172972A JPH112524A (en) | 1997-06-13 | 1997-06-13 | Incorrect measurement preventing method and device for measuring measurement station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9172972A JPH112524A (en) | 1997-06-13 | 1997-06-13 | Incorrect measurement preventing method and device for measuring measurement station |
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Publication Number | Publication Date |
---|---|
JPH112524A true JPH112524A (en) | 1999-01-06 |
Family
ID=15951783
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JP9172972A Pending JPH112524A (en) | 1997-06-13 | 1997-06-13 | Incorrect measurement preventing method and device for measuring measurement station |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001033251A (en) * | 1999-07-23 | 2001-02-09 | Sgs:Kk | Opening and closing device for reflection prism, and surveying by total station using opening and closing device for reflection prism |
KR100754077B1 (en) * | 1999-09-28 | 2007-08-31 | 텔레폰악티에볼라겟엘엠에릭슨(펍) | Interleaver and method for interleaving an input data bit sequence using a coded storing of symbol and additional information |
JP2008298794A (en) * | 2008-08-11 | 2008-12-11 | Nikon-Trimble Co Ltd | Surveying instrument |
-
1997
- 1997-06-13 JP JP9172972A patent/JPH112524A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001033251A (en) * | 1999-07-23 | 2001-02-09 | Sgs:Kk | Opening and closing device for reflection prism, and surveying by total station using opening and closing device for reflection prism |
KR100754077B1 (en) * | 1999-09-28 | 2007-08-31 | 텔레폰악티에볼라겟엘엠에릭슨(펍) | Interleaver and method for interleaving an input data bit sequence using a coded storing of symbol and additional information |
JP2008298794A (en) * | 2008-08-11 | 2008-12-11 | Nikon-Trimble Co Ltd | Surveying instrument |
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