Following distance displaying apparatus that changes alarming display according to operating states
First Claim
1. A following distance alarming apparatus connected to receive output signals of a following distance measuring device and a sensor having an output signal value that changes in accordance with a driver'"'"'s operation for speed adjustment of a subject vehicle, comprising:
- a memory connectable to receive the output signal value of said sensor and, responsive to the output signal value from said sensor having remained unchanged for a prescribed time period, for storing a reference value for the output signal value of said sensor based on the output signal value from said sensor; and
a first alarming circuit connectable to receive the output signal value of said sensor and an output signal value of said following distance measuring device and further connected to said memory, and determining a possibility of collision of the subject vehicle with a preceding vehicle based on a following distance measured by said following distance measuring device when the output signal value from said sensor remained unchanged for the prescribed time period, the output signal value from said sensor and said reference value stored in said memory, to output a warning sound.
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Accused Products
Abstract
The following distance alarming apparatus includes a memory responsive to an output signal value of a sensor, which changes in accordance with a driver'"'"'s operation for speed adjustment of a subject vehicle, having remained unchanged for a prescribed time period, for storing a reference value for the output signal value of the sensor, and an alarming circuit determining a possibility of collision of the subject vehicle with a preceding vehicle, based on a following distance measured by a following distance measuring device when the output signal value from the sensor remained unchanged for the prescribed time period, the output signal value from the sensor and the reference value stored in the memory, and outputting a warning sound.
22 Citations
34 Claims
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1. A following distance alarming apparatus connected to receive output signals of a following distance measuring device and a sensor having an output signal value that changes in accordance with a driver'"'"'s operation for speed adjustment of a subject vehicle, comprising:
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a memory connectable to receive the output signal value of said sensor and, responsive to the output signal value from said sensor having remained unchanged for a prescribed time period, for storing a reference value for the output signal value of said sensor based on the output signal value from said sensor; and
a first alarming circuit connectable to receive the output signal value of said sensor and an output signal value of said following distance measuring device and further connected to said memory, and determining a possibility of collision of the subject vehicle with a preceding vehicle based on a following distance measured by said following distance measuring device when the output signal value from said sensor remained unchanged for the prescribed time period, the output signal value from said sensor and said reference value stored in said memory, to output a warning sound. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A following distance alarming apparatus connected to receive output signals of a following distance measuring device and a sensor having an output signal value that changes in accordance with a driver'"'"'s operation for speed adjustment of a subject vehicle, comprising:
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a memory connectable to receive the output signal of said following distance measuring device and, when it is detected that the subject vehicle and a preceding vehicle have maintained a follow-up travel state for a prescribed time period based on a following distance measured by said following distance measuring device, storing a reference value determined based on the output signal value from said sensor at that time;
a first alarming circuit connectable to receive the output signals of said sensor and said following distance measuring device and further connected to said memory and, responsive to said following distance measuring device having measured an alarm distance determined corresponding to the following distance at the time of said follow-up travel state, for determining a possibility of collision of the subject vehicle with a preceding vehicle based on the output signal value from said sensor and said reference value stored in said memory, to output a warning sound;
a means for, when it is detected that the subject vehicle and a preceding vehicle have maintained a follow-up travel state for a prescribed time period again, causing said memory to store a reference value determined based upon the output value of said sensor; and
a second alarming circuit, responsive to the output signal value from said sensor having satisfied a prescribed relation with said reference value and responsive to said following distance measuring device having measured the alarm distance determined corresponding to the following distance at the time of said follow-up travel state, for determining the possibility of collision of the subject vehicle with the preceding vehicle based on the output signal value from said sensor and said reference value stored in said memory, to output the alarm. - View Dependent Claims (8)
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9. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
a detecting unit detecting that an output signal from a sensor having an output signal value changing in accordance with a driver'"'"'s operation for control of a speed of the subject vehicle has remained unchanged for a prescribed time period; and
a display unit, responsive to said detecting unit having detected that the output signal from said sensor had remained unchanged for the prescribed time period, for displaying the following distance at which said alarm unit activates. - View Dependent Claims (10, 11, 12, 13, 15, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31)
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14. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
a detecting unit detecting that a value of said following distance measurement signal has remained unchanged for a prescribed time period; and
a display unit, responsive to said detecting unit having detected that the value of said following distance measurement signal had remained unchanged for the prescribed time period, for displaying the following distance at which said alarm unit activates.
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19. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
a detecting unit detecting that an output signal from a sensor having an output signal value changing in accordance with a driver'"'"'s operation for control of a speed of the subject vehicle has remained unchanged for a prescribed time period; and
a display unit, responsive to said detecting unit having detected that the output signal of said sensor had remained unchanged for the prescribed time period, for displaying a difference between the following distance indicated by said following distance measurement signal and the following distance at which said alarm unit activates.
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24. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
a detecting unit detecting that a value of said following distance measurement signal has remained unchanged for a prescribed time period; and
a display unit, responsive to said detecting unit having detected that the value of said following distance measurement signal had remained unchanged for the prescribed time period, for displaying a difference between the following distance indicated by said following distance measurement signal and the following distance at which said alarm unit activates.
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29. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
an input device provided to the subject vehicle; and
a display unit displaying a distance at which said alarm unit activates based on an input signal from said input device.
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32. A following distance alarming apparatus, comprising:
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an alarm unit outputting a warning sound, based on a following distance measurement signal, when a following distance from a subject vehicle to a preceding vehicle decreases to a prescribed value;
an input device provided to the subject vehicle; and
a display unit displaying a difference between a distance to the preceding vehicle indicated by said following distance measurement signal and the distance at which said alarm unit activates based on an input signal from said input device. - View Dependent Claims (33, 34)
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Specification