JP7290571B2 - 統合化されたlidar照明出力制御 - Google Patents
統合化されたlidar照明出力制御 Download PDFInfo
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Description
本特許出願は、2017年3月31日に出願された「統合化されたLIDAR照明出力制御」というタイトルの米国特許仮出願第62/480,119号に基づき優先権を主張している、2018年3月30日に出願された「統合化されたLIDAR照明出力制御」というタイトルの米国特許出願第15/941,302に基づく優先権を主張するものであり、その全体が参照により本明細書に組み込まれるものとする。
Claims (4)
- 統合LIDAR測定装置であって、
プリント回路基板に取り付けられた照明源と、
前記プリント回路基板に取り付けられ、省電力制御モジュールを具備する窒化ガリウム(GaN)ベースの照明ドライバ集積回路(IC)であって、前記照明ドライバICは、前記照明源及び第1の電源に電気的に接続され、前記照明ドライバICは、パルストリガー信号に応答して前記照明源を前記第1の電源に選択的に電気的に接続させ、前記照明源に照明光の測定パルスを放射させるよう構成され、そして前記省電力制御モジュールは、前記GaNベースの照明ドライバICの回路の一部に供給する電力を調整して電力消費を低減させることができることを特徴とする、照明ドライバ集積回路と、
前記プリント回路基板に取り付けられた光検出器であって、前記光検出器は、光の戻りパルスを検出し、前記検出された戻りパルスを示す出力信号を生成するよう構成され、前記戻りパルスは、対応する前記測定パルスにより照射された周囲環境内の1つの位置から反射された前記測定パルスであることを特徴とする、光検出器と、
前記プリント回路基板に取り付けられた戻り信号受信機集積回路(IC)であって、前記出力信号に基づいて前記戻り信号受信機ICは、前記LIDAR測定装置から3次元環境内の測定位置まで行き、前記LIDAR測定装置に戻ってくるまでの前記測定パルスの飛行時間を決定するよう構成され、前記戻り信号受信機ICは前記パルストリガー信号を生成し、前記パルストリガー信号を前記GaNベースの照明ドライバICに伝達するよう構成されていることを特徴とする、戻りパルス受信機ICと、
を具備し、
前記省電力制御モジュールは、(i)前記パルストリガー信号の第1のエッジで遅れ時間を導入し、(ii)前記遅れ時間の経過後、前記GaNベースの照明ドライバICの回路の一部への第1の調整された電圧を生成し、前記第1の調整された電圧は、前記パルストリガー信号の第2のエッジを過ぎても低電圧を維持し、(iii)前記GaNベースの照明ドライバICの回路の一部への第2の調整された電圧を生成し、前記第2の調整された電圧は、次のパルストリガー信号の第1のエッジの前に高電圧値へと上昇することを特徴とする、統合LIDAR測定装置。 - 前記第1の電源は、前記第1の電源の第1のノードと第2のノードとの間に第1の電圧を生じさせ、前記照明源の第1のノードは、前記電源の前記第1のノードに電気的に接続され、前記照明ドライバICは、前記照明源の第2のノードと前記第1の電源の前記第2のノードとに電気的に接続され、前記照明ドライバICは、前記パルストリガー信号に応答して、前記照明源の前記第2のノードを前記第1の電源の前記第2のノードに選択的に電気的に接続させるよう構成されていることを特徴とする、請求項1に記載の統合LIDAR測定装置。
- 前記GaNベースの照明ドライバICは、複数の電界効果トランジスタ(FETs)を具備し、前記複数の電界効果トランジスタ(FETs)は、
ソース、第2の電源の第1のノードに接続されたドレイン、及びゲート充電制御信号を受信するよう構成されたゲートを有する第1の電界効果トランジスタ(FET)と、
前記第1のFETの前記ソースに接続されたドレイン、前記第2の電源の第2のノードに接続されたソース、及びゲート放電制御信号を受信するよう構成されたゲートを有する第2のFETと、
前記第1のFETの前記ソースと前記第2のFETの前記ドレインとに接続されたゲート、前記照明源の前記第2のノードに接続されたドレイン、及び前記第1の電源の前記第2のノードに接続されたソースを有する第3のFETであって、前記ゲート充電制御信号は、前記第3のFETの前記ゲートを前記第2の電源の前記第1のノードに選択的に接続させ、前記ゲート放電制御信号は、前記第3のFETの前記ゲートを前記第2の電源の前記第2のノードに選択的に接続させることを特徴とする第3のFETと、
を具備することを特徴とする請求項2に記載の統合LIDAR測定装置。 - パルストリガー信号に応答して、プリント回路基板に取り付けられた窒化ガリウム(GaN)ベースの照明ドライバ集積回路(IC)から電力のパルスを供給するステップであって、前記照明ドライバICには、省電力制御モジュールが含まれていることを特徴とする、ステップと
電力消費を低減させるために、前記GaNベースの照明ドライバICの回路の一部に供給する電力を調整するステップであって、前記電力を調整するステップは、
(i)前記省電力制御モジュールにより、前記パルストリガー信号の第1のエッジで遅れ時間を導入するステップと、
(ii)前記遅れ時間の経過後、前記省電力制御モジュールにより、前記GaNベースの照明ドライバICの回路の一部への第1の調整された電圧を生成するステップであって、前記第1の調整された電圧は、前記パルストリガー信号の第2のエッジを過ぎても低電圧を維持する、ステップと、
(iii)前記省電力制御モジュールにより、前記GaNベースの照明ドライバICの回路の一部への第2の調整された電圧を生成するステップであって、前記第2の調整された電圧は、次のパルストリガー信号の第1のエッジの前に高電圧値へと上昇する、ステップと、
を具備することを特徴とする、ステップと、
前記プリント回路基板に取り付けられた照明源からの電力の前記パルスに応答して照明光の測定パルスを放射するステップと、
光の戻りパルスを検出するステップであって、前記戻りパルスは、対応する前記測定パルスにより照射された周囲環境内の1つの位置から反射された前記測定パルスであることを特徴とする光の戻りパルスを検出するステップと、
LIDAR装置から3次元環境内の測定位置まで行き、前記LIDAR装置に戻ってくるまでの前記測定パルスの飛行時間を、前記検出された光の戻りパルスに基づき決定するステップと、
を具備することを特徴とする方法。
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US201762480119P | 2017-03-31 | 2017-03-31 | |
US62/480,119 | 2017-03-31 | ||
PCT/US2018/025395 WO2018183843A1 (en) | 2017-03-31 | 2018-03-30 | Integrated lidar illumination power control |
US15/941,302 | 2018-03-30 | ||
US15/941,302 US10386465B2 (en) | 2017-03-31 | 2018-03-30 | Integrated LIDAR illumination power control |
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- 2018-03-30 WO PCT/US2018/025395 patent/WO2018183843A1/en unknown
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US10627491B2 (en) | 2020-04-21 |
EP3593166A4 (en) | 2020-12-09 |
EP3593166B1 (en) | 2024-04-17 |
WO2018183843A1 (en) | 2018-10-04 |
JP2021107817A (ja) | 2021-07-29 |
US20190361092A1 (en) | 2019-11-28 |
US10386465B2 (en) | 2019-08-20 |
US20200191915A1 (en) | 2020-06-18 |
US20190339365A1 (en) | 2019-11-07 |
CN110914705A (zh) | 2020-03-24 |
CN110914705B (zh) | 2024-04-26 |
EP3593166A1 (en) | 2020-01-15 |
CA3057988A1 (en) | 2018-10-04 |
US20180284227A1 (en) | 2018-10-04 |
JP2020515855A (ja) | 2020-05-28 |
US11808891B2 (en) | 2023-11-07 |
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