LOW-IMPACT CRASH DETECTION SYSTEM
First Claim
1. A low-impact crash detection system for a vehicle comprising an accelerometer device from which horizontal components of acceleration are derived, a data processor comprising a bandpass filter to generate filtered horizontal components of acceleration and a communication device for transmitting crash alert information, wherein the data processor is configured to generate an impact energy signal from the filtered horizontal acceleration components, to compare the impact energy signal with a threshold value to determine whether a low-impact crash has taken place, and to generate a crash alert for transmission by the communication device if the threshold value is exceeded.
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Accused Products
Abstract
There is provided a low-impact crash detection system for a vehicle comprising an accelerometer device from which horizontal components of acceleration are derived, a data processor comprising a FIR bandpass filter to generate filtered horizontal components of acceleration and a communication device for transmitting crash alert information, wherein the data processor is configured to generate an impact energy signal from the filtered horizontal acceleration components, to compare the impact energy signal with a threshold value to determine whether a low-impact crash has taken place, and to generate a crash alert for transmission by the communication device if the threshold value is exceeded. A method of low-impact crash detection is also provided, the method including a crash scoring method.
10 Citations
25 Claims
- 1. A low-impact crash detection system for a vehicle comprising an accelerometer device from which horizontal components of acceleration are derived, a data processor comprising a bandpass filter to generate filtered horizontal components of acceleration and a communication device for transmitting crash alert information, wherein the data processor is configured to generate an impact energy signal from the filtered horizontal acceleration components, to compare the impact energy signal with a threshold value to determine whether a low-impact crash has taken place, and to generate a crash alert for transmission by the communication device if the threshold value is exceeded.
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14. A method of low-impact crash detection comprising acquiring at least horizontal acceleration components from an accelerometer device;
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filtering horizontal acceleration components using a bandpass filter so as to produce filtered horizontal acceleration components within a frequency range; squaring the amplitude of the filtered horizontal acceleration components to produce an impact energy signal; comparing the impact energy signal with a threshold value to determine whether a low-impact crash has taken place; and providing a crash alert if the threshold value is exceeded. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification