Actuation apparatus for actuating the protective devices for the safety of vehicle occupants
US5802480A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Jun 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/01034
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An actuation apparatus (1) for actuating a protective device for the safety of vehicle occupants, including an accelerometer (S) which outputs a deceleration signal at a time of a crash; a central processing unit (16) in which the signal received from the accelerometer (S) undergoes arithmetic operations; a first memory (17) for the central processing unit (16), which is a read only memory and constitutes a one-chip microcomputer (2) together with the central processing unit (16), in which an algorithm for the signal received from the accelerometer (S) undergoing the arithmetic operations is preset; a second memory (18) for the central processing unit (16), which is a writable memory and is preset with parameters for use in the arithmetic operations, the parameters are determined by crash tests varying according to vehicle type and are specific values corresponding to a specific type of vehicle; and an ignition circuit (6) for actuating the protective device on a basis of a signal received from the central processing unit (16). The memory (18) is mounted on a chip such as an EEPROM separate from and connected to the one-chip microcomputer (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.