Method and apparatus for evaluating deceleration of a vehicle
First Claim
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1. Method for evaluating deceleration of a vehicle comprising:
- measuring a deceleration of the vehicle during a first time interval,determining a trend in the measured deceleration,estimating calculating a speed of the vehicle at a first time instant in a second time interval,which is different from the first time interval, based on the measured deceleration by extrapolating the trend to said first time instant, wherein the calculated speed forms an estimate of a speed the vehicle would reach had the determined trend had been maintained until said first time instant,measuring a speed of the vehicle at said first time instant,comparing the calculated speed to the measured speed,generating a signal based on said comparison, andgenerating a notification regarding the deceleration based on the signal.
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Abstract
In accordance with the present inventive concept, there is provided a method for evaluating deceleration of a vehicle. The method comprises: measuring a deceleration of the vehicle during a first time interval, estimating a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, based on the measured deceleration, measuring a speed of the vehicle at the first time instant, comparing the estimated speed to the measured speed, and generating a signal based on the comparison. There is also provided an apparatus for evaluating deceleration of a vehicle.
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Citations
28 Claims
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1. Method for evaluating deceleration of a vehicle comprising:
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measuring a deceleration of the vehicle during a first time interval, determining a trend in the measured deceleration, estimating calculating a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, based on the measured deceleration by extrapolating the trend to said first time instant, wherein the calculated speed forms an estimate of a speed the vehicle would reach had the determined trend had been maintained until said first time instant, measuring a speed of the vehicle at said first time instant, comparing the calculated speed to the measured speed, generating a signal based on said comparison, and generating a notification regarding the deceleration based on the signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for evaluating deceleration of a vehicle comprising:
- a measurement unit arranged to measure a deceleration of the vehicle during a first time interval, and measure a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval,
an estimation unit arranged to estimate a speed at said first time instant, based on the measured deceleration, wherein the estimation unit is arranged to determine a trend in the measured deceleration, and estimate the speed at said first time instant by extrapolating the trend to said first time instant, wherein the estimated speed forms an estimate of a speed the vehicle would reach had the determined trend had been maintained until said first time instant, a comparison unit arranged to compare the estimated speed to the measured speed, and a signal generator arranged to generate a signal based on said comparison. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- a measurement unit arranged to measure a deceleration of the vehicle during a first time interval, and measure a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval,
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17. Method for evaluating deceleration of a vehicle comprising:
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measuring a deceleration of the vehicle in a first time interval, measuring a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, determining a trend in the measured deceleration, estimating calculating a second time instant at which an estimated speed of the vehicle based on the measured deceleration matches said measured speed by extrapolating the trend to the measured speed, wherein the second time instant forms an estimate of a time instant at which the vehicle would reach said measured speed had the determined trend had been maintained during the second time interval, comparing the first time instant and the second time instant, generating a signal based on said comparison, and generating a notification regarding the deceleration based on the signal. - View Dependent Claims (18)
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19. Apparatus for evaluating deceleration of a vehicle comprising:
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a measurement unit arranged to measure a deceleration of the vehicle in a first time interval, and measure a speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, an estimation unit arranged to estimate a second time instant at which an estimated speed of the vehicle based on the measured deceleration matches said measured speed, wherein the estimation unit is arranged to determine a trend in the measured deceleration, and estimate the second time instant by extrapolating the trend to the measured speed, wherein the second time instant forms an estimate of a time instant at which the vehicle would reach said measured speed had the determined trend had been maintained during the second time interval, a comparison unit arranged to compare the first and the second time instant, and a signal generator arranged to generate a signal based on said comparison. - View Dependent Claims (20)
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21. Method for evaluating deceleration of a vehicle comprising:
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determining a time instant of initiation of a deceleration of the vehicle, measuring the deceleration of the vehicle during a first time interval, measuring a first speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, estimating a second time instant such that a deceleration, corresponding to said measured deceleration, from a second speed of the vehicle prior to the first time interval, during a time interval from the second to the first time instant, results in said first measured speed, comparing the second time instant and the time instant of initiation of the deceleration, and generating a signal based on said comparison, and generating a notification regarding the deceleration based on the signal. - View Dependent Claims (22, 23, 24)
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25. Apparatus for evaluating deceleration of a vehicle comprising:
- a monitoring unit arranged to determine a time instant of initiation of a deceleration of the vehicle, a measurement unit arranged to measure the deceleration of the vehicle in a first time interval, and a first speed of the vehicle at a first time instant in a second time interval, which is different from the first time interval, an estimation unit arranged to estimate a second time instant such that a deceleration, corresponding to said measured deceleration, from a second speed of the vehicle prior to the first time interval, during a time interval from the second to the first time instant, results in said first measured speed, a comparison unit arranged to compare the second time instant and the time instant of initiation of the deceleration, and generating a signal based on said comparison.
- View Dependent Claims (26, 27, 28)
Specification