Vehicle parking aid system
First Claim
1. A parking aid system for a vehicle, comprising means for measuring the instantaneous distance of a predetermined portion of the vehicle from an obstacle located in the path of at least prospective movement of such a portion, and for generating at least one output signal having an instantaneous actual distance value indicative of such a measured distance;
- means for issuing warning signals; and
evaluating means interposed between said measuring means and said issuing means and operative for dynamically determining, as a predetermined function of a movement condition of the vehicle, an instantaneous distance limit value representative of a far limit of a range in said path, comparing said actual distance value with said distance limit value, and activating said issuing means when said comparison reveals that said actual distance value is smaller than said distance limit value to alert the driver of the vehicle to the presence of the obstacle within said range.
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Accused Products
Abstract
A parking aid system for a vehicle includes a device that measures the instantaneous distance of a vehicle part from an obstacle located in its path and generates at least one output signal indicative of the measured distance, as well as a device capable of issuing warning signals. An evaluating unit is connected between the measuring device and the warning device. The evaluating device dynamically determines, as a function of vehicle speed, an instantaneous distance limit value, compares the measured distance value with the respective distance limit value and activates the warning device when the measured distance value is smaller than the respective distance limit value to alert the driver of the vehicle to the presence of the obstacle. The distance limit value may be determined by adding a first distance value independent of the speed of the vehicle and a second distance value linearly proportional to the speed of movement of the vehicle. The proportionality constant for the second distance value is at least equal to at least one of the reaction time of the driver, the reaction time of the measuring means, the dead time of the braking system of the vehicle and the time that is required to stop the vehicle after the braking system has become effective.
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Citations
12 Claims
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1. A parking aid system for a vehicle, comprising means for measuring the instantaneous distance of a predetermined portion of the vehicle from an obstacle located in the path of at least prospective movement of such a portion, and for generating at least one output signal having an instantaneous actual distance value indicative of such a measured distance;
- means for issuing warning signals; and
evaluating means interposed between said measuring means and said issuing means and operative for dynamically determining, as a predetermined function of a movement condition of the vehicle, an instantaneous distance limit value representative of a far limit of a range in said path, comparing said actual distance value with said distance limit value, and activating said issuing means when said comparison reveals that said actual distance value is smaller than said distance limit value to alert the driver of the vehicle to the presence of the obstacle within said range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- means for issuing warning signals; and
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12. A parking aid system for a vehicle, comprising
means for measuring an instantaneous distance of a predetermined portion of the vehicle from an obstacle located in the path of at least prospective movement of said predetermined portion and for generating at least one output signal having an actual distance value indicative of the instantaneous distance; -
means for issuing warning signals; and
evaluating means including means for dynamically calculating an instantaneous distance limit value representative of a far limit of a range in said path by adding a first distance value independent of vehicle speed and a second distance value linearly proportional to the speed of movement of the vehicle into said path, means for comparing said actual distance value with said instantaneous distance limit value and means for activating said means for issuing warning signals so as to issue one of the warning signals when said comparing reveals that said actual distance value is smaller than said distance limit value.
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Specification