JPS551205A - Monitoring device of air cushion - Google Patents
Monitoring device of air cushionInfo
- Publication number
- JPS551205A JPS551205A JP7212778A JP7212778A JPS551205A JP S551205 A JPS551205 A JP S551205A JP 7212778 A JP7212778 A JP 7212778A JP 7212778 A JP7212778 A JP 7212778A JP S551205 A JPS551205 A JP S551205A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- fault
- air cushion
- power voltage
- power
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
- B60R21/0173—Diagnostic or recording means therefor
- B60R21/0176—Diagnostic or recording means therefor for firing circuits using only mechanical switches as collision detecting means, in series with pyrotechnic fuses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
PURPOSE:To detect fault of an air cushion mechanism for a wide range of fluctuation in power voltage, by making the threshold voltage variable in proportion to the power voltage. CONSTITUTION:When a working element of an air cushion actuator 7 is disconnected, the cathode voltage of diode array 9 is earthed, the output of a comparator 42 is inverted and the output of a comparator 41 is raised high to generate a fault signal. If this fault is continuous, a transistor 18 is on to turn on a lamp 17. If the normal state is restored immediately after the signal is generated, the lamp 17 is turn off. When the service voltage to the comparators 40-43 is given from a power line 80, the threshold voltage changes in proportion to the change in power voltage, which can detect the fault without regard to the change of power voltage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7212778A JPS551205A (en) | 1978-06-16 | 1978-06-16 | Monitoring device of air cushion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7212778A JPS551205A (en) | 1978-06-16 | 1978-06-16 | Monitoring device of air cushion |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS551205A true JPS551205A (en) | 1980-01-08 |
Family
ID=13480331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7212778A Pending JPS551205A (en) | 1978-06-16 | 1978-06-16 | Monitoring device of air cushion |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS551205A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS608167U (en) * | 1983-06-29 | 1985-01-21 | 日本電気ホームエレクトロニクス株式会社 | Automobile airbag device |
JPS60232320A (en) * | 1984-05-01 | 1985-11-19 | Sandobitsuku Kk | Diverter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147216A (en) * | 1974-10-19 | 1976-04-22 | Meidensha Electric Mfg Co Ltd | Kaitentoransu niokeru rootakoano kumitatehoho |
JPS5195331A (en) * | 1975-02-17 | 1976-08-20 |
-
1978
- 1978-06-16 JP JP7212778A patent/JPS551205A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147216A (en) * | 1974-10-19 | 1976-04-22 | Meidensha Electric Mfg Co Ltd | Kaitentoransu niokeru rootakoano kumitatehoho |
JPS5195331A (en) * | 1975-02-17 | 1976-08-20 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS608167U (en) * | 1983-06-29 | 1985-01-21 | 日本電気ホームエレクトロニクス株式会社 | Automobile airbag device |
JPS6350203Y2 (en) * | 1983-06-29 | 1988-12-23 | ||
JPS60232320A (en) * | 1984-05-01 | 1985-11-19 | Sandobitsuku Kk | Diverter |
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