JPS5576718A - Automotive alarm device - Google Patents
Automotive alarm deviceInfo
- Publication number
- JPS5576718A JPS5576718A JP14875078A JP14875078A JPS5576718A JP S5576718 A JPS5576718 A JP S5576718A JP 14875078 A JP14875078 A JP 14875078A JP 14875078 A JP14875078 A JP 14875078A JP S5576718 A JPS5576718 A JP S5576718A
- Authority
- JP
- Japan
- Prior art keywords
- alarm sound
- closed
- sensor switch
- oscillates
- condenser
- 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
- Alarm Systems (AREA)
Abstract
PURPOSE: To enable identification of closed switch by providing an oscillation circuit which oscillates at frequency different with closure of each sensor switch for safety operation and by emitting the alarm sound by means of the speaker.
CONSTITUTION: When the sensor switch SW1 is closed, the oscillation circuit consisting of 2 NAND gages N, condenser C and resistance r1 oscillates at frequency by the time constant circuit consisting of resistance r1 and condenser C, and the output is amplified by the low freqeuncy amplifier AL of the automotive radio AR, outputting alarm sound from the speaker SP. Since the alarm sound of a tone corresponding to sensor switches SW1WSWn is emitted, closed sensor switch can be immediately identified in accordance with the tone of alarm sound. In addition, the use of automotive radio for this system has the advantage of simplified circuit and less cost.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14875078A JPS5576718A (en) | 1978-11-30 | 1978-11-30 | Automotive alarm device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14875078A JPS5576718A (en) | 1978-11-30 | 1978-11-30 | Automotive alarm device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5576718A true JPS5576718A (en) | 1980-06-10 |
JPS5610216B2 JPS5610216B2 (en) | 1981-03-06 |
Family
ID=15459786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14875078A Granted JPS5576718A (en) | 1978-11-30 | 1978-11-30 | Automotive alarm device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576718A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61176695U (en) * | 1985-04-19 | 1986-11-04 | ||
JP2009012609A (en) * | 2007-07-04 | 2009-01-22 | Kubota Corp | Motor part structure for tractor |
-
1978
- 1978-11-30 JP JP14875078A patent/JPS5576718A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61176695U (en) * | 1985-04-19 | 1986-11-04 | ||
JP2009012609A (en) * | 2007-07-04 | 2009-01-22 | Kubota Corp | Motor part structure for tractor |
Also Published As
Publication number | Publication date |
---|---|
JPS5610216B2 (en) | 1981-03-06 |
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