JP2019507340A - 多重パルスlidarに基づく三次元撮像 - Google Patents
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- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
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- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
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- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
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Abstract
Description
11 下部ハウジング
12 上部ハウジング
13 円筒形シェル要素
14 中心軸
15 複数の光ビーム
16 ビーム
17 位置
100 三次元LIDARシステム
101 下部ハウジング
102 上部ハウジング
103 ドーム状シェル要素
104 中心軸
105 複数の光ビーム
106 ビーム
107 XY平面上の位置
108 円形軌跡
110 固定電子基板
111 回転電子基板
112 発光・集光エンジン
113 光検出素子アレイ
114 発光素子アレイ
115 照明光学系
116 集光光学系
116A レンズ素子
116B レンズ素子
116C レンズ素子
116D レンズ素子
117 112の中心光軸
118 集光された光
121 中間電子基板
122 中間電子基板
123 中間電子基板
124 ミラー
130 多重パルス照射システム
131 電気エネルギー源
132A 電気エネルギー蓄積素子
132B 電気エネルギー蓄積素子
132C 電気エネルギー蓄積素子
133 電流
134 電流
135 電流
136 パルス電気信号、電流信号
137 パルス発光装置
138 特定位置
139A スイッチ素子
139B スイッチ素子
139C スイッチ素子
140 制御装置
144 アナログ/デジタル変換器
145 イネーブル/ディスエーブル信号
150 光検出システム
151 出力信号
152 アナログ相互インピーダンス増幅器
153 増幅信号、アナログ信号
155 光検出器
161 多重パルス発射信号
162 インデックス信号
163 戻り信号、戻り測定パルスシーケンス
165 フィルタリングされた信号
167 測定パルスシーケンス
Claims (23)
- 光検出及び測距(LIDAR)装置であって、前記LIDAR装置は、
前記LIDAR装置から三次元環境内に照射光の多重パルスビームを出射する多重パルス照射源であって、照射光の前記多重パルスビームは、照射光の多重パルスを含む照射光の測定パルスシーケンスにより、前記三次元環境内の特定位置を照射する、前記多重パルス照射源と、
照射光の前記多重パルスビームにより照射された前記三次元環境内の前記特定位置から反射された前記測定パルスシーケンスの量を検出し、検出された光量を示す出力信号を発生する感光検出器と、
計算システムと、
を有し、
前記計算システムは、前記検出された光量を示す前記出力信号を受信し、前記出力信号をデジタル信号に変換し、前記デジタル信号に基づいて前記LIDAR装置から前記三次元環境内の前記特定位置そして前記特定位置から前記LIDAR装置に戻るまでの前記測定パルスシーケンスの飛行時間を測定するように構成される、ことを特徴とするLIDAR装置。 - 前記多重パルス照射源が、
パルス発光装置と、
前記パルス発光装置に選択的に結合された複数の電気エネルギー蓄積素子と、
前記パルス発光装置に前記複数の電気エネルギー蓄積素子のそれぞれを選択的に結合するように構成された複数のスイッチ素子と、
前記複数の電気エネルギー蓄積素子に電気的に結合する電気エネルギー源と、
を有し、
前記電気エネルギー源は、前記複数の電気エネルギー蓄積素子に電気エネルギーを供給することを特徴とする請求項1に記載のLIDAR装置。 - 前記計算システムはさらに、前記複数のスイッチ素子のそれぞれに制御信号を伝達するように構成されており、前記制御信号が、前記複数のスイッチ素子の1つ以上のスイッチ素子を、実質的に非導電性の状態から実質的に導電性の状態に変化させることを特徴とする請求項2に記載のLIDAR装置。
- 前記制御信号が、前記複数の電気エネルギー蓄積素子の1つ以上の電気エネルギー蓄積素子から前記パルス発光装置への一連の放電を引き起こし、そして、前記パルス発光装置が、前記一連の放電を受電し、照射光の前記多重パルスビームを発生することを特徴とする請求項3に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、第1の振幅を有する第1のパルスと、前記第1の振幅より大きな又は小さな第2の振幅を有する第2のパルスと、を含むことを特徴とする請求項4に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、第1の持続時間を有する第1のパルスと、前記第1の持続時間より長い又は短い第2の持続時間を有する第2のパルスと、を含むことを特徴とする請求項4に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、第1の振幅及び第1の持続時間を有する第1のパルスと、第2の振幅及び第2の持続時間を有する第2のパルスと、を含み、前記第2の振幅は前記第1の振幅より大きく、そして、前記第2の持続時間は前記第1の持続時間より長いことを特徴とする請求項4に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、符号ダイバーシティ方式、振幅ダイバーシティ方式、及び時間ダイバーシティ方式のいずれかにより符号化されることを特徴とする請求項4に記載のLIDAR装置。
- 前記計算システムがさらに、閾値を超えた前記出力信号の複数の連続するインスタンスのそれぞれに関する検出の時間を測定し、そして、複数の連続する前記インスタンスのそれぞれの間の時間が、照射光の前記多重パルスビームの多重パルスの間の時間と実質的に同じであるか測定するように構成されており、
照射光の前記多重パルスビームの前記飛行時間は、前記LIDAR装置から前記多重パルスビームが出射された時間、及び前記閾値を超えた前記出力信号の複数の連続する前記インスタンスのそれぞれに関する検出の時間の間の差に基づいて測定されることを特徴とする請求項1に記載のLIDAR装置。 - 前記計算システムがさらに、前記出力信号をフィルタリングし、そして、フィルタリングされた前記出力信号が閾値を超えた時のインスタンスを測定するように構成されており、
照射光の前記多重パルスビームの前記飛行時間は、前記LIDAR装置から前記多重パルスビームが出射された時間、及びフィルタリングされた前記出力信号が前記閾値を超えた時の前記インスタンスに関する検出の時間の間の差に基づいて測定されることを特徴とする請求項1に記載のLIDAR装置。 - 前記フィルタリングが、シグネチャ検出フィルタにより実施されることを特徴とする請求項10に記載のLIDAR装置。
- 前記LIDAR装置の測定範囲の2倍の距離にわたる光の飛行時間を超える存続期間を有する測定窓の間、前記検出された光量を示す前記出力信号が発生されることを特徴とする請求項1に記載のLIDAR装置。
- 光検出及び測距(LIDAR)装置であって、前記LIDAR装置は、
前記LIDAR装置から三次元環境内に照射光の多重パルスビームを出射する多重パルス照射源であって、照射光の前記多重パルスビームは、照射光の多重パルスを含む照射光の測定パルスシーケンスにより、前記三次元環境内の特定位置を照射する、前記多重パルス照射源と、
照射光の前記多重パルスビームにより照射された前記三次元環境内の前記特定位置から反射された前記測定パルスシーケンスの量を検出し、検出された光量を示す出力信号を発生する感光検出器と、
一定量のプログラムコードを記憶している非一時的なコンピュータ可読媒体と、
を有し、
前記プログラムコードが計算システムにより実行されると、前記プログラムコードが、前記計算システムに、前記検出された光量を示す前記出力信号を受信させ、前記出力信号をデジタル信号に変換させ、そして、前記デジタル信号に基づいて前記LIDAR装置から前記三次元環境内の前記特定位置そして前記特定位置から前記LIDAR装置に戻るまでの前記測定パルスシーケンスの飛行時間を測定させる、ことを特徴とするLIDAR装置。 - 照射光の前記多重パルスビームが、第1の振幅を有する第1のパルスと、前記第1の振幅より大きな又は小さな第2の振幅を有する第2のパルスと、を含むことを特徴とする請求項13に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、第1の持続時間を有する第1のパルスと、前記第1の持続時間より長い又は短い第2の持続時間を有する第2のパルスと、を含むことを特徴とする請求項13に記載のLIDAR装置。
- 照射光の前記多重パルスビームが、符号ダイバーシティ方式、振幅ダイバーシティ方式、及び時間ダイバーシティ方式のいずれかにより符号化されることを特徴とする請求項13に記載のLIDAR装置。
- 一定量の前記プログラムコードがさらに、前記計算システムに、前記出力信号をフィルタリングさせ、そして、フィルタリングされた前記出力信号が閾値を超えた時のインスタンスを測定させ、
照射光の前記多重パルスビームの前記飛行時間は、前記LIDAR装置から前記多重パルスビームが出射された時間、及びフィルタリングされた前記出力信号が前記閾値を超えた時の前記インスタンスに関する検出の時間の間の差に基づいて測定されることを特徴とする請求項13に記載のLIDAR装置。 - 前記LIDAR装置の測定範囲の2倍の距離にわたる光の飛行時間を超える存続期間を有する測定窓の間、検出された光量を示す前記出力信号が発生されることを特徴とする請求項13に記載のLIDAR装置。
- LIDAR装置から三次元環境内に照射光の多重パルスビームを出射し、照射光の前記多重パルスビームが、照射光の多重パルスを含む照射光の測定パルスシーケンスにより、前記三次元環境内の特定位置を照射し、
照射光の前記多重パルスビームにより照射された前記三次元環境内の前記特定位置から反射された前記測定パルスシーケンスの量を検出し、
検出された光量を示す出力信号を発生し、
前記出力信号をデジタル信号に変換し、
前記デジタル信号に基づいて前記LIDAR装置から前記三次元環境内の前記特定位置そして前記特定位置から前記LIDAR装置に戻るまでの前記測定パルスシーケンスの飛行時間を測定することを特徴とする方法。 - 照射光の前記多重パルスビームが、第1の振幅を有する第1のパルス及び前記第1の振幅より大きな又は小さな第2の振幅を有する第2のパルス、第1の持続時間を有する第1のパルス及び前記第1の持続時間より長い又は短い第2の持続時間を有する第2のパルス、又はその組み合わせを含むことを特徴とする請求項19に記載の方法。
- 照射光の前記多重パルスビームが、符号ダイバーシティ方式、振幅ダイバーシティ方式、及び時間ダイバーシティ方式のいずれかにより符号化されることを特徴とする請求項19に記載の方法。
- さらに、前記出力信号をフィルタリングし、そして、フィルタリングされた前記出力信号が閾値を超えた時のインスタンスを測定し、
前記測定パルスシーケンスの前記飛行時間は、前記LIDAR装置から前記測定パルスシーケンスが出射された時間、及びフィルタリングされた前記出力信号が前記閾値を超えた時の前記インスタンスに関する検出の時間の間の差に基づいて測定されることを特徴とする請求項19に記載の方法。 - 前記LIDAR装置の測定範囲の2倍の距離にわたる光の飛行時間を超える存続期間を有する測定窓の間、照射光の前記多重パルスビームにより照射された前記三次元環境内の前記特定位置から反射された前記測定パルスシーケンスの量が検出されることを特徴とする請求項19に記載の方法。
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US201662289277P | 2016-01-31 | 2016-01-31 | |
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US15/339,790 | 2016-10-31 | ||
US15/339,790 US10627490B2 (en) | 2016-01-31 | 2016-10-31 | Multiple pulse, LIDAR based 3-D imaging |
PCT/US2017/015869 WO2017132703A1 (en) | 2016-01-31 | 2017-01-31 | Multiple pulse, lidar based 3-d imaging |
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