JP4227598B2 - 車両接近報知装置 - Google Patents
車両接近報知装置 Download PDFInfo
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- JP4227598B2 JP4227598B2 JP2005114900A JP2005114900A JP4227598B2 JP 4227598 B2 JP4227598 B2 JP 4227598B2 JP 2005114900 A JP2005114900 A JP 2005114900A JP 2005114900 A JP2005114900 A JP 2005114900A JP 4227598 B2 JP4227598 B2 JP 4227598B2
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- vehicle
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Description
f:周波数(Hz)、v=相対速度(km/h)、λ=波長(m)
ドップラーモジュール11−1の波長1/24GHzを上記式に代入し変形すると、次式のようになる。
式(2)にHPF11−4のカットオフ周波数、例えば400Hzを代入すると、約8.9km/h以下の低速度の車両を検出しないこととなる。
Claims (2)
- 第1の位置に設置され、検知領域にマイクロ波を放射し、前記検知領域内の車両からの反射波を受信する送受信部と、
前記送受信部から出力されるドップラー信号成分が供給され、増幅利得を調整することにより、前記検知領域を調整する検知領域調整部と、
前記検知領域調整部から出力されるドップラー信号成分より低域信号成分を除去する除去部と、
前記第1の位置から離れた第2の位置に設置され、前記除去部から信号が供給されたとき、前記第1の位置と第2の位置との距離に対応した時間信号を発生する作動時間調整部と、
前記作動時間調整部の出力信号に応じて警報を発生する警報部と
を具備することを特徴とする車両接近報知装置。 - 前記第2の位置に設けられ、係員の有無を検知する第2の検知部と、
前記第2の検知部の出力信号と前記作動時間調整部の出力信号が供給されたとき、前記警報部を起動する信号を出力する論理回路と
をさらに具備することを特徴とする請求項1記載の車両接近報知装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005114900A JP4227598B2 (ja) | 2005-04-12 | 2005-04-12 | 車両接近報知装置 |
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Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005114900A JP4227598B2 (ja) | 2005-04-12 | 2005-04-12 | 車両接近報知装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006292588A JP2006292588A (ja) | 2006-10-26 |
JP4227598B2 true JP4227598B2 (ja) | 2009-02-18 |
Family
ID=37413305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005114900A Expired - Fee Related JP4227598B2 (ja) | 2005-04-12 | 2005-04-12 | 車両接近報知装置 |
Country Status (1)
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JP (1) | JP4227598B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106970425B (zh) * | 2017-04-07 | 2019-02-01 | 长安大学 | 一种公路隧道地质雷达超前预报辅助检测车 |
CN112458946A (zh) * | 2020-11-27 | 2021-03-09 | 杭州晶一智能科技有限公司 | 可显示是否有行人的智能人行道 |
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2005
- 2005-04-12 JP JP2005114900A patent/JP4227598B2/ja not_active Expired - Fee Related
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JP2006292588A (ja) | 2006-10-26 |
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