Rollover sensing device

• US 20060184301A1
• Filed: 02/14/2006
• Published: 08/17/2006
• Est. Priority Date: 02/16/2005
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Konno, Nobuaki, Tokunaga, Takashi, Inoue, Satoru
• Application Number:
  US11/353,169
• Publication Number:
  US 20060184301A1
• Time in Patent Office: Days
• US Class Current: 701/45
• CPC Class Codes: B60R 16/0233 Vehicle tilting, overturning or roll over
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60R 2021/01325 Vertical acceleration
• CPC Class Codes: B60R 2021/01327 Angular velocity or angular acceleration
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value
• CPC Class Codes: G01P 15/0888 for indicating angular acceleration
• CPC Class Codes: G01P 3/22 transferred to the indicator by electric or magnetic means

Abstract

A rollover sensing device includes a detecting unit that includes at least a pair of acceleration sensors which detect an acceleration in an vertical direction, the pair of acceleration sensors being disposed closer to each other on a same board in a lateral direction of a vehicle, an arithmetic processing unit that calculates an angular acceleration and an angular velocity of the vehicle on a basis of an output signal from the detecting unit, and a rollover determining unit that determines whether or not a rollover of the vehicle occurs on a basis of an arithmetic result obtained by the arithmetic processing unit.

Claims

1. A rollover sensing device comprising:

a detecting unit that includes at least a pair of acceleration sensors which detect an acceleration in an vertical direction, the pair of acceleration sensors being disposed closer to each other on a same board in a lateral direction of a vehicle;

an arithmetic processing unit that calculates an angular acceleration and an angular velocity of the vehicle on a basis of an output signal from the detecting unit; and

a rollover determining unit that determines whether or not a rollover of the vehicle occurs on a basis of an arithmetic result obtained by the arithmetic processing unit.

2. The rollover sensing device according to claim 1, wherein

the detecting unit further includes an angular velocity sensor that detects an angular velocity of the vehicle.

3. The rollover sensing device according to claim 1, wherein

the detecting unit further includes an acceleration sensor that detects an acceleration in the lateral direction of the vehicle.

4. The rollover sensing device according to claim 1, wherein

the detecting unit further includes another pair of acceleration sensors which detect an vertical acceleration, the another pair of acceleration sensors being disposed closer to each other on the same board in the lateral direction of the vehicle.

5. The rollover sensing device according to claim 1, wherein

the rollover determining unit includes two determination units, and

the rollover determining unit determines whether or not the rollover of the vehicle occurs by a logical add operation of outputs from the two determination units.

6. The rollover sensing device according to claim 1, further comprising:

a protective device, wherein

the protective device activates on a basis of an output from the rollover determining unit.

7. The rollover sensing device according to claim 1, wherein

the detecting unit, the arithmetic processing unit and the rollover determining unit are formed on the same board to form a sensing unit.

8. The rollover sensing device according to claim 1, wherein

the rollover determining unit includes two determination units,

the rollover determining unit determines whether or not the rollover of the vehicle occurs by a logical add operation of outputs from the two determination units, and

the detecting unit further includes an angular velocity sensor that detects an angular velocity of the vehicle.

9. The rollover sensing device according to claim 1, wherein

the rollover determining unit includes two determination units,

the rollover determining unit determines whether or not the rollover of the vehicle occurs by a logical add operation of outputs from the two determination units, and

the detecting unit further includes an acceleration sensor that detects an acceleration in the lateral direction of the vehicle.

10. The rollover sensing device according to claim 1, wherein

the rollover determining unit includes two determination units,

the rollover determining unit determines whether or not the rollover of the vehicle occurs by a logical add operation of outputs from the two determination units, and

the detecting unit further includes another pair of acceleration sensors which detect an vertical acceleration, the another pair of acceleration sensors being disposed closer to each other on the same board in the lateral direction of the vehicle.