JP2015187571A5

JP2015187571A5 -

Info

Publication number: JP2015187571A5
Application number: JP2014065023A
Authority: JP
Filing date: 2014-03-27
Publication date: 2017-04-06
Anticipated expiration: 2034-03-27

Description

前記目的を達成するため、本発明の回転数測定装置の一態様は、回転体を所定のフレームレートで連続撮影する撮影手段と、前記撮影手段により連続撮影された各フレームの撮影画像において前記回転体の回転状態を確認する確認手段と、前記確認手段により確認された前記回転体の前記各フレームでの前記回転状態に基づいて、前記回転体の単位時間あたりの回転数を取得する取得手段と、を備えた、ことを特徴とする。
また、前記目的を達成するため、本発明の回転数測定方法の一態様は、回転体を所定のフレームレートで連続撮影する撮影工程と、前記撮影工程で連続撮影した各フレームの撮影画像において前記回転体の回転状態を確認する確認工程と、前記確認工程で確認した前記回転体の前記各フレームでの前記回転状態に基づいて、前記回転体の単位時間あたりの回転数を取得する取得工程と、を含む、ことを特徴とする。
また、前記目的を達成するため、本発明のプログラムの一態様は、コンピュータに、撮影手段により回転体を所定のフレームレートで連続撮影する撮影処理と、前記撮影処理で連続撮影した各フレームの撮影画像において前記回転体の回転状態を確認する確認処理と、前記確認処理で確認した前記回転体の前記各フレームでの前記回転状態に基づいて、前記回転体の単位時間あたりの回転数を取得する取得処理と、を実行させる、ことを特徴とする。 In order to achieve the above object, an aspect of the rotational speed measurement device according to the present invention includes an imaging unit that continuously shoots a rotating body at a predetermined frame rate, and the rotation in a captured image of each frame continuously captured by the imaging unit. and confirmation means for confirming the rotation state of the body, an acquisition unit based said confirmed the rotating body to the rotational state of each frame by said confirming means, obtains the rotational speed of per unit of the rotating body time , with a, characterized in that.
In order to achieve the above object, one aspect of the rotational speed measurement method of the present invention includes a photographing step of continuously photographing a rotating body at a predetermined frame rate, and a photographed image of each frame continuously photographed in the photographing step. A confirmation step of confirming a rotation state of the rotating body, and an acquisition step of acquiring the number of rotations of the rotating body per unit time based on the rotation state of each of the rotating bodies confirmed in the confirmation step. , Including.
In order to achieve the above object, according to one aspect of the program of the present invention, there is provided in a computer, a photographing process in which a rotating body is continuously photographed by a photographing unit at a predetermined frame rate, and photographing of each frame continuously photographed in the photographing process. Based on the confirmation process for confirming the rotation state of the rotating body in the image and the rotation state of the rotating body at each frame confirmed in the confirmation process, the number of rotations per unit time of the rotating body is acquired. The acquisition process is executed.

表示制御部１６は、画像メモリ１５に記憶された撮影画像データに基づく撮影画像を表示部１７にライブビュー表示させるとともに、中央制御部２１から送られる風速及び風向の測定結果をＯＳＤ（On Screen Display）により撮影画像に重畳して表示部１７に表示させる。 The display control unit 16 causes the live view display on the display unit 17 the captured image based on the captured image data stored in the image memory 15, the measurement results of the wind speed and wind direction of the OSD (On Screen sent from the central control unit 21 Display) is superimposed on the photographed image and displayed on the display unit 17.

複数種のデータには、画像処理部１８が個体識別マーカーＭ１や風向測定マーカーＭ２の認識に際して使用する特徴データと、各風車１０１，２０１の種類、すなわち水平軸型と垂直軸型のいずれであるかの情報が含まれる。上記の特徴データのうち個体識別マーカーＭ１の認識に使用される特徴データは、個体識別マーカーＭ１を表す画像データである。また風向測定マーカーＭ２の認識に使用される特徴データは、平面に展開された状態の風向測定マーカーＭ２を表す画像（以下、平面画像）のデータである。 The plurality of types of data include feature data used when the image processing unit 18 recognizes the individual identification marker M1 and the wind direction measurement marker M2, and the types of the windmills 101 and 201, that is, the horizontal axis type and the vertical axis type. Information is included. Of the above feature data, the feature data used for recognition of the individual identification marker M1 is image data representing the individual identification marker M1. The feature data used for recognition of the wind direction measurement marker M2 is data of an image (hereinafter referred to as a plane image) representing the wind direction measurement marker M2 in a state of being developed on a plane.

ステップＳＡ３の処理に際して中央制御部２１は、各風車１０１，２０１の個体識別マーカーＭ１や風向測定マーカーＭ２の位置、及び個体識別マーカーＭ１によって示される各風車の識別番号を取得し、それらをＲＡＭ３１に記憶する。なお、以下の説明では、便宜上、撮影画像内に複数の風車が存在するものとする。 The central control unit 21 when processing in step SA3, obtains the position of the identification markers M1 and wind direction measuring markers M2 of the wind turbine 101, 201, and the identification number of each windmill Therefore indicated in individual identification markers M1, they RAM31 To remember. In the following description, for the sake of convenience, it is assumed that there are a plurality of windmills in the captured image.

Claims

Photographing means for continuously photographing the rotating body at a predetermined frame rate;
Confirmation means for confirming the rotation state of the rotating body in the captured images of each frame continuously photographed by the photographing means;
An acquisition unit operable of the rotating body that have been identified on the basis of the rotational state of each frame, to obtain the number of rotations per the unit of the rotating body time by the confirmation means,
With,
Rotational speed measuring device characterized by that.

The acquisition unit, based on the rotation state at each frame of the rotating body, which is confirmed by the confirmation means in the captured image of each frame that is continuously captured by the imaging means within a predetermined measurement period, rotational speed measuring apparatus according to claim 1, wherein the obtaining the number of revolutions per unit time of the rotary body.

The confirmation means includes
Setting means for setting a predetermined detection area corresponding to the rotating body in the continuous captured image of each frame;
Targeting the detection area set by the setting means, and recognizing means serving as a reference metric in confirming the rotational state of the rotary member,
Including
The acquisition unit acquires the number of rotations per unit time based on the number of frames recognized as the measurement reference by the recognizing means,
The rotational speed measuring apparatus according to claim 1 or 2, wherein

The setting means, the said photographic image of each frame, the rotation number measuring apparatus according to claim 3, characterized in that for setting the detection area in accordance with the type of the rotating body.

The setting means, as said detection area, the rotation number measuring according to claim 3 or 4, wherein to set an area corresponding to the range the rotational center of the rotating body is changed to the captured image of each frame apparatus.

The rotating body is a wind receiving body of a windmill,
It said recognition means, as the object of the detection area set by the setting means, recognizes the reference vanes as a reference among the plurality of blades constituting the air receiving member,
The acquisition unit acquires the number of rotations per unit time on the basis of the number of frames to the reference blade is recognized by the recognizing means,
Rotational speed measuring device according to any one Kouki placement of claims 3 to 5, characterized by further comprising a calculating means for calculating the wind speed from the number of rotations per unit time obtained by the obtaining means.

The windmill is a horizontal axis type windmill,
The horizontal axis type windmill is provided on a rotating shaft that is rotatably attached to an upper end of a support, a trunk portion provided on the rotating shaft, a vertical tail provided on the trunk portion, and the trunk portion. It has a propeller as the said wind receiving body, The rotation speed measuring apparatus of Claim 6 characterized by the above-mentioned.

The propeller of the horizontal axis type wind turbine has a plurality of blades, one blade of the plurality of blades is distinguishable from the other blades, and the one blade confirms the rotation state of the propeller. 8. The rotational speed measuring device according to claim 7, wherein the rotational speed measuring device is used as the reference blade as a reference.

The detection area of the horizontal axis type windmill is an area that varies depending on the size of the horizontal axis type windmill, and the reference blade is positioned within a predetermined angle range on the rotation plane of the propeller regardless of the direction of the trunk portion. 9. The rotational speed measuring device according to claim 7 or 8, wherein the rotational speed measuring device is an area that appears only in between.

The windmill is a vertical axis type windmill,
The vertical axis type windmill includes: a rotating shaft rotatably attached to an upper end of a support; a plurality of supporting shafts provided on the rotating shaft; and the wind receiving member provided on each tip of the plurality of supporting shafts. The rotation speed measuring apparatus according to claim 6, further comprising:

One cup of each of the cups of the vertical axis type windmill is distinguishable from the other cups, and the one cup serves as a reference for checking the rotation state of the cup. The rotational speed measuring device according to claim 10, wherein the rotational speed measuring device is used as a reference blade.

The detection area of the vertical axis type windmill is an area that varies depending on the size of the vertical axis type windmill, and is an area that appears only while the reference blade is located within a predetermined angular range on the rotation plane of the cup. The rotational speed measurement device according to claim 10 or 11, characterized in that.

The confirmation means, the rotational state of the plurality of rotating bodies existing in the captured image of each frame independently confirmed,
Said acquisition means, any one Kouki mounting of the rotational speed measuring device according to claim 1 to 12, characterized in that to obtain separately the number of rotations per unit time of the plurality of rotating bodies.

A shooting process of continuously shooting the rotating body at a predetermined frame rate;
A confirmation step for confirming the rotation state of the rotating body in the photographed images of the frames continuously photographed in the photographing step;
An acquisition step of, based on the rotational state of the each frame of the rotating body which is confirmed by the confirmation process, to obtain the number of rotations per the unit of the rotating body time,
Including,
The wind speed measuring method characterized by this.

On the computer,
A photographing process for continuously photographing the rotating body at a predetermined frame rate by the photographing means;
Confirmation processing for confirming the rotation state of the rotating body in the captured image of each frame continuously photographed in the photographing processing;
And obtaining processing based on the rotational state of the each frame of the rotating body confirmed in the confirmation process, to obtain the number of rotations per the unit of the rotating body time,
To execute ,
A program characterized by that.