Acceleration sensor arrangement, safing arrangement for an activation system, activation system
First Claim
1. An acceleration sensor arrangement comprising in one package:
- a logic interface of the package for receiving from external of the package a user programmable acceleration threshold and a user programmable delay;
an acceleration threshold detector for detecting acceleration and for providing an output signal having one of a first value and a second value, the output signal having the first value when the acceleration is less than the user programmable acceleration threshold, the acceleration threshold detector being arranged to switch the output signal from the first value to the second value when the acceleration reaches the user programmable acceleration threshold, wherein the acceleration threshold detector receives the user programmable acceleration threshold from the logic interface of the package; and
a processor circuit for receiving the output signal from the acceleration threshold detector and for generating an event signal based on the user programmable delay, the event signal to trigger an event in response to the output signal switching to the second value, wherein the processor circuit receives the user programmable delay from the logic interface of the package.
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Accused Products
Abstract
An acceleration sensor arrangement comprises, in one package, an acceleration threshold detector for detecting acceleration and for providing an output signal and a processor circuit for receiving the output signal. The acceleration threshold detector provides an output signal having a first value when the acceleration is less than a predetermined threshold and is arranged to switch the output signal from the first value to a second value when the acceleration reaches the predetermined threshold. The processor circuit generates an event signal to trigger an event, such as the closing of a safing transistor switch in an airbag system, in response to the output signal from the acceleration threshold detector switching to the second value.
20 Citations
20 Claims
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1. An acceleration sensor arrangement comprising in one package:
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a logic interface of the package for receiving from external of the package a user programmable acceleration threshold and a user programmable delay; an acceleration threshold detector for detecting acceleration and for providing an output signal having one of a first value and a second value, the output signal having the first value when the acceleration is less than the user programmable acceleration threshold, the acceleration threshold detector being arranged to switch the output signal from the first value to the second value when the acceleration reaches the user programmable acceleration threshold, wherein the acceleration threshold detector receives the user programmable acceleration threshold from the logic interface of the package; and a processor circuit for receiving the output signal from the acceleration threshold detector and for generating an event signal based on the user programmable delay, the event signal to trigger an event in response to the output signal switching to the second value, wherein the processor circuit receives the user programmable delay from the logic interface of the package. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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receiving, at a logic interface of an integrated circuit, first digital data for a user programmable acceleration threshold value; providing the first digital data for the user programmable acceleration threshold value to an acceleration threshold detector of the integrated circuit, wherein the user programmable acceleration threshold value is compared with an acceleration detected in the acceleration threshold detector that when the acceleration threshold detector detects that the acceleration reaches the user programmable acceleration threshold value the acceleration threshold detector switches an output signal of from a first value to a second value; receiving, at the logic interface, second digital data for a user programmable delay; and providing the second digital data for the user programmable delay to a processor circuit, wherein the user programmable delay is used to set an amount of time between when the processor circuit receives the second value of the output signal from the acceleration threshold detector and when the processor circuit provides an event trigger to trigger an event. - View Dependent Claims (18, 19)
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20. An integrated circuit comprising:
an acceleration threshold detector to receive digital data associated with a user programmable acceleration threshold value from a logic interface of the integrated circuit, the acceleration threshold detector to detect that an acceleration value has reached the user programmable acceleration threshold value and to switch an output signal from a first value to a second value in response to the acceleration value reaching the a user programmable acceleration threshold value.
Specification