JPH0367236U - - Google Patents
Info
- Publication number
- JPH0367236U JPH0367236U JP12495889U JP12495889U JPH0367236U JP H0367236 U JPH0367236 U JP H0367236U JP 12495889 U JP12495889 U JP 12495889U JP 12495889 U JP12495889 U JP 12495889U JP H0367236 U JPH0367236 U JP H0367236U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- vehicle
- noise level
- variable frequency
- microphone
- 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
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は、本考案に係る車両の警報装置のブロ
ツク構成図、第２図は、本考案の原理を説明する
グラフ図、第３図は、本考案に用いる警報条件判
定回路の一実施例を示した図、第４図は、本考案
に用いる騒音レベル検出回路の一実施例を示した
図、第５図は、本考案に用いる周波数可変発振回
路の一実施例を示した図、第６図は、本考案に用
いる周波数可変発振回路の他の実施例を示した図
、第７図は、第６図の実施例の動作を説明するた
めの図、である。
第１図において、１は警報条件判定回路、２は
マイク、３は騒音レベル検出回路、４は周波数可
変発振回路、５は増幅回路、６は音響出力装置（
スピーカ、ブザー）をそれぞれ示す。図中、同一
符号は同一又は相当部分を示す。
Fig. 1 is a block configuration diagram of a vehicle alarm system according to the present invention, Fig. 2 is a graph diagram explaining the principle of the present invention, and Fig. 3 is an example of an alarm condition determination circuit used in the present invention. 4 is a diagram showing an embodiment of the noise level detection circuit used in the present invention. FIG. 5 is a diagram showing an embodiment of the variable frequency oscillation circuit used in the present invention. FIG. 6 is a diagram showing another embodiment of the variable frequency oscillation circuit used in the present invention, and FIG. 7 is a diagram for explaining the operation of the embodiment of FIG. 6. In FIG. 1, 1 is an alarm condition determination circuit, 2 is a microphone, 3 is a noise level detection circuit, 4 is a variable frequency oscillation circuit, 5 is an amplifier circuit, and 6 is a sound output device (
(speaker, buzzer) are shown respectively. In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
該マイクから該車両の騒音レベルを検出する回路
と、該警報条件が満たされたとき所定の音響信号
に対応する電気信号を発生すると共に該騒音レベ
ルにマスキングされない高周波側へシフトする周
波数可変発振回路と、該周波数可変発振回路の出
力信号を増幅して音響出力装置に与える回路と、
を備えたことを特徴とする車両の警報装置。 A circuit for determining vehicle alarm conditions, a microphone,
a circuit that detects the noise level of the vehicle from the microphone; and a variable frequency oscillation circuit that generates an electrical signal corresponding to a predetermined acoustic signal when the alarm condition is met and shifts to a high frequency side that is not masked by the noise level. and a circuit that amplifies the output signal of the variable frequency oscillation circuit and provides it to the acoustic output device.
A vehicle warning device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12495889U JPH0367236U (en) | 1989-10-24 | 1989-10-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12495889U JPH0367236U (en) | 1989-10-24 | 1989-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0367236U true JPH0367236U (en) | 1991-07-01 |
Family
ID=31672851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12495889U Pending JPH0367236U (en) | 1989-10-24 | 1989-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0367236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160031A (en) * | 2005-12-12 | 2007-06-28 | Kunihiko Konno | Space-saving knock down furniture |
-
1989
- 1989-10-24 JP JP12495889U patent/JPH0367236U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160031A (en) * | 2005-12-12 | 2007-06-28 | Kunihiko Konno | Space-saving knock down furniture |
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