JP6690009B2 - 反復無線送信に基づく動き検出 - Google Patents
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- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
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Description
本出願は、2016年4月15日に出願された「反復無線送信に基づく動き検出(Detecting Motion Based on Repeated Wireless Transmission)」という名称の米国特許出願第15/099,833号に対する優先権を主張するものであり、この文献は引用により本明細書に組み入れられる。
302 空間内のセンサにおいて、送信無線信号に基づく無線信号を受信
304 受信無線信号の周波数成分の特性を判別
306 複数の受信無線信号の周波数成分の特性に基づいて空間内の物体の動きを検出
Claims (17)
- 動き検出方法であって、
空間内の無線センサデバイスにおいて、第1の時点に、ソースデバイスによって送信される送信無線信号の第1の送信に基づく第1の受信無線信号を受け取るステップと、
プロセッサの動作により、前記第1の受信無線信号に基づく第1の信号の帯域幅における周波数成分の、該第1の信号の該帯域幅における該周波数成分の第1の複素値の組を含む第1の特性を判別するステップと、
前記無線センサデバイスにおいて、その後の第2の時点に、前記ソースデバイスによって送信される前記送信無線信号の第2の送信に基づく第2の受信無線信号を受け取るステップと、
前記プロセッサの動作により、前記第2の受信無線信号に基づく第2の信号の前記帯域幅における周波数成分の、該第2の信号の該帯域幅における該周波数成分の第2の複素値の組を含む第2の特性を判別するステップと、
前記第1の特性と前記第2の特性との比較に基づいて前記空間内の物体の動きを検出するステップであって、前記第1の特性と前記第2の特性との間の差分が閾値を上回ることに応じて前記動きが生じたことを検出することを含むステップと、
を含むことを特徴とする動き検出方法。 - 前記空間は密閉空間を含み、前記ソースデバイスは前記密閉空間内に存在する、
請求項1に記載の動き検出方法。 - 前記第1の特性及び前記第2の特性を判別するステップは、前記第1の信号及び前記第2の信号をそれぞれ周波数領域に変換するステップを含み、前記第1の複素値の組は、前記第1の信号の前記帯域幅における前記周波数成分の大きさ及び位相を表し、前記第2の複素値の組は、前記第2の信号の前記帯域幅における前記周波数成分の大きさ及び位相を表す、
請求項1に記載の動き検出方法。 - 前記送信無線信号は、送信無線周波数(RF)信号である、
請求項1に記載の動き検出方法。 - 前記ソースデバイスは、前記空間内の第2の無線センサデバイスを含む、
請求項1に記載の動き検出方法。 - 前記第1の特性と前記第2の特性との比較に基づいて前記空間内の物体の動きを検出するステップは、前記第1の複素値の組と前記第2の複素値の組との間の差分に基づいて前記物体の動きを検出するステップを含む、
請求項1に記載の動き検出方法。 - 前記差分は、前記周波数成分のうちの1又は2以上の周波数成分の位相の差分又は大きさの差分のうちの少なくとも1つを含む、
請求項6に記載の動き検出方法。 - 前記第1の受信無線信号をフィルタ処理して第1の出力信号を生成するステップと、
前記第1の出力信号をダウンコンバートして前記第1の信号を生成するステップと、
前記第2の受信無線信号をフィルタ処理して第2の出力信号を生成するステップと、
前記第2の出力信号をダウンコンバートして前記第2の信号を生成するステップと、
をさらに含む、請求項1に記載の動き検出方法。 - 動き検出方法であって、
空間内の無線センサデバイスにおいて、ソースによって繰り返される無線送信に基づく無線信号を受け取る受信ステップと、
プロセッサの動作により、前記受け取った無線信号を解析して前記空間内の物体の動きを検出する解析ステップと、
を含み、前記解析ステップは、
前記受け取った無線信号の各々のそれぞれの周波数成分の複素値を求めるステップと、
前記複素値の変化が閾値を上回ったことに応じて前記空間内の物体の動きを検出するステップと、
を含む、
ことを特徴とする動き検出方法。 - 前記複素値を求めるステップは、高速フーリエ変換(FFT)アルゴリズムを使用するステップを含む、
請求項9に記載の動き検出方法。 - 前記無線送信は、無線周波数(RF)信号を含む、
請求項9に記載の動き検出方法。 - 動き検出システムであって、
空間内の物体の動きを検出するように構成されたセンサデバイスを備え、該センサデバイスは、
ソースデバイスからの送信無線信号の反復送信に基づく前記空間内の無線信号を受け取るように構成されたアンテナシステムと、
1又は2以上のプロセッサと、
を含み、前記プロセッサは、
前記受け取った無線信号に基づいてそれぞれの信号の周波数成分の複素値を求め、
前記複素値間の差分が閾値を上回ったことに応じて前記物体の動きを検出する、
ように構成される、
ことを特徴とする動き検出システム。 - 前記1又は2以上のプロセッサは、高速フーリエ変換(FFT)アルゴリズムを用いて前記複素値を求めるように構成される、
請求項12に記載の動き検出システム。 - 前記センサデバイスは、フィルタを含む無線経路と、ダウンコンバージョン回路とを含むとともに、前記受け取った無線RF信号の電気信号を前記無線経路に入力するように構成され、前記無線経路の出力部は、前記ダウンコンバージョン回路の入力部に結合され、前記ダウンコンバージョン回路は、RF信号をベースバンド信号にダウンコンバートするように構成されるとともに、前記受け取った無線RF信号に基づいて前記それぞれの信号を出力するように構成される、
請求項12に記載の動き検出システム。 - 前記反復送信を送信するように構成されたソースデバイスをさらに備える、
請求項12に記載の動き検出システム。 - 前記センサデバイスは、前記反復送信を送信するように構成されたソースデバイスをさらに含む、
請求項12に記載の動き検出システム。 - 前記センサデバイスから動き検出に関する情報を受け取るように構成されたデータ解析システムをさらに備える、
請求項12に記載の動き検出システム。
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US15/099,833 | 2016-04-15 | ||
US15/099,833 US9523760B1 (en) | 2016-04-15 | 2016-04-15 | Detecting motion based on repeated wireless transmissions |
PCT/CA2016/051229 WO2017177303A1 (en) | 2016-04-15 | 2016-10-24 | Detecting motion based on repeated wireless transmissions |
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JP2019513985A (ja) | 2019-05-30 |
KR20180108835A (ko) | 2018-10-04 |
CA3016018C (en) | 2019-08-27 |
CA3016018A1 (en) | 2017-10-19 |
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EP3417309A4 (en) | 2019-11-13 |
CN108780145A (zh) | 2018-11-09 |
EP3417309A1 (en) | 2018-12-26 |
WO2017177303A1 (en) | 2017-10-19 |
CN108780145B (zh) | 2020-03-03 |
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