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Automobile airbag controller

A vehicle safety and controller technology, applied in vehicle safety arrangement, pedestrian/occupant safety arrangement, vehicle components, etc., can solve problems such as wrong airbag deployment, and achieve the effect of avoiding wrong airbag deployment

Active Publication Date: 2013-04-17
泰州市凌峰机电设备有限公司
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  • Summary
  • Abstract
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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. Choose a dual-axis micro-mechanical acceleration sensor, which can synthesize longitudinal and lateral acceleration, no matter which direction the collision, as long as the composite acceleration value reaches the set value, it will meet one of the collision conditions.

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

[0019] 3. The acceleration signal of the driving car is sampled at any time, and the signal that truly meets the conditions of the collision is selected and filtered in accordance with relevant international standards before being output to the MCU (Micro-Controller Unit) of the airbag controller.

[0020] 4. The communi...

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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 airbag controller. Background technique [0002] None of the existing automobile airbag controllers can completely solve the problems of accurately detonating the airbag when the collision conditions are met and the problem of incorrectly detonating the airbag when the collision conditions are not met. At present, the acceleration sensor widely used in passenger car airbag controllers on the market is an inertial mechanical switch structure, which can only sense the acceleration during a frontal or one-way side collision. When the collision direction is slightly offset, the collision conditions cannot Satisfaction, resulting in failure to accurately detonate the airbag, causing casualties and vehicle damage. In addition, when the car is driving, due to emergency braking, bumps caused by roadblocks, etc., the airbag may be detonated by mistake when the col...

Claims

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Application Information

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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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