Device for controlling personal protection in a vehicle

a technology for controlling the means of personal protection and vehicles, which is applied in the direction of process control, pedestrian/occupant safety arrangement, instruments, etc., can solve the problems of suboptimal triggering of personal protection systems, different acceleration curves belonging to different physical crash events cannot be distinguished from one another, and crash history reproduced in “blurred” fashion. , to achieve the effect of better suited, precise and robust activation

Active Publication Date: 2016-03-17
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps prevent accidents by analyzing data from crashes on vehicles during their journey. It does this through calculating certain factors like speed and distance traveled before they hit an accident. By doing this, it allows for early identification of potential hazards and activates appropriate safety measures based on these factors.

Problems solved by technology

This patent describes different ways to detect if someover blocks a car's air bag system. One method involves measuring accelerations in both directions, while another method uses processing data obtained from the acceleration measurements themselves. However, each method has its own limitations: either the accuracy of identifying crashes depends on factors like the distance traveled by the vehicle, the number of passengers being protected, or the severity of the impact caused by the objects involved. Additionally, the methods require multiple triggers to identify crashes and trigger specific actions, making them difficult to interpret accurately.

Method used

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  • Device for controlling personal protection in a vehicle
  • Device for controlling personal protection in a vehicle
  • Device for controlling personal protection in a vehicle

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Embodiment Construction

[0036]As a rule, crush zones of vehicles are designed in such a way that they have different force levels. The frontmost structures of the crush zone have the lowest force level, and the rear structures show the highest force level. When there is deformation of the crush zone, the force level and the measured acceleration therefore change. In the case of crashes against a hard obstacle, in which only the structures of the home vehicle are deformed, there is always a decrease in force between the change of the force levels, due to the plastic deformation of the already-deformed structure. In the case of a soft crash, both the home vehicle and the other vehicle in the collision are deformed. Here, depending on the rigidity curve of the crush zones, phases of deformation of the home vehicle alternate with phases of deformation of the object impacted. In the transition from deformation of the home vehicle to deformation of the other object, the achieved force level often decreases somewhat

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Abstract

A device for controlling personal protection apparatus in a vehicle includes: at least one sensor unit that acquires at least one physical quantity; and evaluation and control unit which (i) produces, from the at least one acquired physical quantity, at least one signal curve that characterizes an impact, (ii) determines, as a function of an energy dissipation behavior of the vehicle, at least one temporal phase in the produced signal curve, and (iii) evaluates the at least one phase for crash classification and for a triggering decision for the personal protection apparatus. The evaluation and control unit retroactively calculates at least one feature of the energy dissipation based on a characteristic time in the signal curve that represents the end of a first temporal phase.

Description

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Claims

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Application Information

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Owner ROBERT BOSCH GMBH
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