JPH0463069U - - Google Patents
Info
- Publication number
- JPH0463069U JPH0463069U JP10514590U JP10514590U JPH0463069U JP H0463069 U JPH0463069 U JP H0463069U JP 10514590 U JP10514590 U JP 10514590U JP 10514590 U JP10514590 U JP 10514590U JP H0463069 U JPH0463069 U JP H0463069U
- Authority
- JP
- Japan
- Prior art keywords
- acceleration sensor
- frequency band
- piezoelectric acceleration
- vehicle
- diagnostic signal
- 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
- 230000001133 acceleration Effects 0.000 claims description 13
- 238000003745 diagnosis Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
図面は本考案の一実施例を示し、第１図は本考
案の故障診断装置の診断対象となる圧電型加速度
センサの縦断面図、第２図は第１図の矢視図、
第３図は圧電型加速度センサ及び本考案の故障診
断装置を組み込んだ車両の乗員保護装置の作動制
御回路図、第４図は加速度と圧電型加速度センサ
の出力電圧の周波数との関係を示す図である。
１……圧電型加速度センサ、１６……診断信号
発生回路（診断信号発生器）。
The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a piezoelectric acceleration sensor to be diagnosed by the failure diagnosis device of the present invention; FIG. 2 is a view taken in the direction of the arrow in FIG. 1;
Fig. 3 is an operation control circuit diagram of a vehicle occupant protection device incorporating a piezoelectric acceleration sensor and the failure diagnosis device of the present invention, and Fig. 4 is a diagram showing the relationship between acceleration and the frequency of the output voltage of the piezoelectric acceleration sensor. It is. 1...Piezoelectric acceleration sensor, 16...Diagnostic signal generation circuit (diagnostic signal generator).
Claims (1)
たとき該加速度に比例した電圧を発生して乗員保
護装置を作動させる圧電型加速度センサに、診断
信号発生器から出力される診断信号を印加するこ
とにより、該圧電型加速度センサの故障の有無を
診断できるようにした圧電型加速度センサの故障
診断装置において、前記診断信号の電圧の周波数
帯域を、前記車両に加速度が生じたとき前記圧電
型加速度センサから発生される電圧の周波数帯域
とは異なる周波数帯域に設定したことを特徴とす
る圧電型加速度センサの故障診断装置。 By applying a diagnostic signal output from a diagnostic signal generator to a piezoelectric acceleration sensor that is attached to a vehicle and that, when acceleration occurs in the vehicle, generates a voltage proportional to the acceleration to activate the occupant protection device. , in a failure diagnosis device for a piezoelectric acceleration sensor capable of diagnosing the presence or absence of a failure in the piezoelectric acceleration sensor, the frequency band of the voltage of the diagnostic signal is set from the piezoelectric acceleration sensor when acceleration occurs in the vehicle; A failure diagnosis device for a piezoelectric acceleration sensor, characterized in that the frequency band is set to a frequency band different from the frequency band of the generated voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990105145U JP2523843Y2 (en) | 1990-10-05 | 1990-10-05 | Failure diagnosis device for piezoelectric acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990105145U JP2523843Y2 (en) | 1990-10-05 | 1990-10-05 | Failure diagnosis device for piezoelectric acceleration sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0463069U true JPH0463069U (en) | 1992-05-29 |
| JP2523843Y2 JP2523843Y2 (en) | 1997-01-29 |
Family
ID=31850728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990105145U Expired - Fee Related JP2523843Y2 (en) | 1990-10-05 | 1990-10-05 | Failure diagnosis device for piezoelectric acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523843Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638684U (en) * | 1986-07-03 | 1988-01-20 | ||
| JPS63181980U (en) * | 1987-05-15 | 1988-11-24 | ||
| JPH02303224A (en) * | 1989-05-18 | 1990-12-17 | Nissan Motor Co Ltd | On-vehicle receiver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5681010A (en) * | 1979-12-06 | 1981-07-02 | Mitsubishi Electric Corp | Controlling apparatus of electric car |
-
1990
- 1990-10-05 JP JP1990105145U patent/JP2523843Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS638684U (en) * | 1986-07-03 | 1988-01-20 | ||
| JPS63181980U (en) * | 1987-05-15 | 1988-11-24 | ||
| JPH02303224A (en) * | 1989-05-18 | 1990-12-17 | Nissan Motor Co Ltd | On-vehicle receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2523843Y2 (en) | 1997-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |