JPS5780947A - Crime prevention device for automobile - Google Patents
Crime prevention device for automobileInfo
- Publication number
- JPS5780947A JPS5780947A JP15496580A JP15496580A JPS5780947A JP S5780947 A JPS5780947 A JP S5780947A JP 15496580 A JP15496580 A JP 15496580A JP 15496580 A JP15496580 A JP 15496580A JP S5780947 A JPS5780947 A JP S5780947A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- prevention device
- crime prevention
- abnormal noise
- car body
- 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.)
- Granted
Links
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
PURPOSE: To protect automobile from robbery or roguery by detecting change in battery voltage and actuating alarm by means of the detector signal.
CONSTITUTION: This crime prevention device is constituted utilizing a part of the jolting detector circuit 1 which includes a jolt detector M1 used to detect shaking of the car body. Added to the above is an abnormal noise detector circuit 2 which includes more than one microphones M2 to detect abnormal noise produced when the car body is hurt. When an electric system of the car, the self-starting motor, radio, etc., is mischievously handled during parking, the voltage fluctuation of the battery B is conveyed through a power source line l1, and a resistance R1 to the base of a transistor TR2. This input is then successively amplified by TR2, TR6, TR7 and TR9 and finally actuates a relay RY1, blowing a hone H for a time period determined by a capacitor C6.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15496580A JPS5780947A (en) | 1980-11-04 | 1980-11-04 | Crime prevention device for automobile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15496580A JPS5780947A (en) | 1980-11-04 | 1980-11-04 | Crime prevention device for automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5780947A true JPS5780947A (en) | 1982-05-20 |
JPS6344100B2 JPS6344100B2 (en) | 1988-09-02 |
Family
ID=15595766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15496580A Granted JPS5780947A (en) | 1980-11-04 | 1980-11-04 | Crime prevention device for automobile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5780947A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61135845A (en) * | 1984-12-06 | 1986-06-23 | Fujitsu Ten Ltd | Automotive burglarproof system |
-
1980
- 1980-11-04 JP JP15496580A patent/JPS5780947A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61135845A (en) * | 1984-12-06 | 1986-06-23 | Fujitsu Ten Ltd | Automotive burglarproof system |
Also Published As
Publication number | Publication date |
---|---|
JPS6344100B2 (en) | 1988-09-02 |
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