JPH01135600U - - Google Patents
Info
- Publication number
- JPH01135600U JPH01135600U JP1988030794U JP3079488U JPH01135600U JP H01135600 U JPH01135600 U JP H01135600U JP 1988030794 U JP1988030794 U JP 1988030794U JP 3079488 U JP3079488 U JP 3079488U JP H01135600 U JPH01135600 U JP H01135600U
- Authority
- JP
- Japan
- Prior art keywords
- receiving
- vehicle
- sound
- comparing
- ultrasonic waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000605 extraction Methods 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims 2
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Description
第1図は本考案の一実施例を示すブロツク図、
第2図は他の実施例を示すブロツク図である。
図中、1……マイクロホン(受信手段)、2,
8……増幅器、3,9……バンドパスフイルタ(
抽出手段)、4,10……オペアンプ(比較手段
)、5,11……ランプ、またはブザー(通報手
段)、6……発振器、7……受発信器(受発信手
段)。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram showing another embodiment. In the figure, 1...microphone (receiving means), 2,
8...Amplifier, 3,9...Band pass filter (
extraction means), 4, 10... operational amplifier (comparison means), 5, 11... lamp or buzzer (notification means), 6... oscillator, 7... receiver/transmitter (reception/transmission means).
Claims (1)
音を受信する受信手段と、該受信手段で受信した
音の特定の周波数帯域の音声信号成分を抽出する
抽出手段と、該抽出手段の出力を所定値と比較す
る比較手段と、該比較手段の出力に基づいて車両
の接近を知らせる通報手段と、を備えたことを特
徴とする車両接近確認装置。 (2) 前記受信手段の代りに超音波を発信し、反
射してきた超音波を受信する受発信手段を設けた
ことを特徴とする請求項1に記載の車両接近確認
装置。[Claims for Utility Model Registration] (1) Receiving means for receiving the running sound and engine sound of a vehicle approaching from the side, and extraction for extracting audio signal components in a specific frequency band of the sound received by the receiving means A vehicle approach confirmation device comprising: means for comparing the output of the extracting means with a predetermined value; and reporting means for notifying the approach of a vehicle based on the output of the comparing means. (2) The vehicle approach confirmation device according to claim 1, further comprising a receiving and transmitting means for transmitting ultrasonic waves and receiving reflected ultrasonic waves in place of the receiving means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988030794U JPH01135600U (en) | 1988-03-08 | 1988-03-08 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988030794U JPH01135600U (en) | 1988-03-08 | 1988-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01135600U true JPH01135600U (en) | 1989-09-18 |
Family
ID=31256169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988030794U Pending JPH01135600U (en) | 1988-03-08 | 1988-03-08 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01135600U (en) |
-
1988
- 1988-03-08 JP JP1988030794U patent/JPH01135600U/ja active Pending
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