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Automotive Airbag Controller

A car safety and controller technology, which is applied in vehicle safety arrangements, pedestrian/passenger safety arrangements, vehicle components, etc., can solve problems such as wrongly detonating airbags, and achieve the effect of avoiding wrongly detonating airbags

Active Publication Date: 2016-02-24
泰州市凌峰机电设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The car airbag controller can satisfactorily solve the problem of accurately detonating the airbag when the collision condition is satisfied and wrongly detonating the airbag when the collision condition is not satisfied

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0017] 1. A dual-axis micro-mechanical acceleration sensor is selected, which can synthesize longitudinal and lateral accelerations. No matter which direction the collision occurs, as long as the synthesized acceleration value reaches the set value, it meets one of the collision conditions.

[0018] 2. On the basis that the acceleration value conforms to the set value, its duration (that is, pulse width) is strictly regulated. Acceleration and time requirements: such as figure 1 : When the acceleration signal of 10g is collected, start timing and meet the conditions: the acceleration value is ≥10g; when the duration is ≥3ms and the acceleration value is ≥20g, the detonation condition is reached.

[0019] 3. Sampling the acceleration signal of the driving car at any time, selecting the signal that really meets the collision conditions, filtering and processing according to relevant international standards, and then sending it to the MCU (Micro-ControllerUnit) of the airbag cont...

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PUM

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Abstract

The invention discloses an automobile airbag controller which is capable of accurately judging whether ignition signals for detonating an airbag is needed or not during running or collision of an automobile. A seat sensor is used for sensing passenger signals, a detonation loop detection circuit is used for detecting states of a detonation system, a power detection circuit is used for detecting conditions of a power source, and an indicating circuit is used for indicating system operation conditions. When collision occurs, a dual-passage micromechanical sensor senses collision force and time which are processed by a 400HZ hardware filter circuit and then sent to an MCU (micro controller unit) for signal processing. The MCU adopts a special mathematical model for operation, an early warning type safety belt detonation circuit is detonated when detonation conditions are met, and the safety belt detonation circuit is detonated after 0.3ms. The automobile airbag controller solves the problem that the airbag is accurately detonated when collision conditions are met and is falsely detonated when collision conditions are not met.

Description

technical field [0001] The invention belongs to the technical field of automobile electronics, in particular to an automobile safety airbag controller. Background technique [0002] None of the existing automotive airbag controllers can completely solve the problems of accurately detonating the safety airbag when the collision condition is met and incorrectly detonating the safety airbag when the collision condition is not satisfied. At present, the acceleration sensor widely used in passenger car airbag controllers in the market is an inertial mechanical switch structure, which can only sense the acceleration of frontal or one-way side collision. When the collision direction is slightly offset, the collision condition will not be able to Satisfied, resulting in the inability to accurately detonate the airbag, resulting in casualties and vehicle damage. In addition, due to emergency braking and bumps caused by roadblocks during driving, the airbag may be erroneously detonat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R21/0136B60R21/015
Inventor 张红岗董余良丁宙波
Owner 泰州市凌峰机电设备有限公司
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