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US 12,589,758 B2Granted
Driving monitoring method and driving risk evaluation system
AssigneeWistron Corporation
InventorChih-Hao Chiu
Life of this patent
Estimating the term…
Abstract
A driving monitoring method and a driving risk evaluation system are provided. In the method, the safety reaction time relative to a vehicle driving status is determined. A risk value is evaluated by inputting the safety reaction time into a cutoff function. The greater the safety reaction time is, the less the risk value corresponding to the cutoff function is. The less the safety reaction time is, the greater the risk value corresponding to the cutoff function is. Therefore, the driver can be reminded at the right moment.
Claims18
A driving monitoring method, comprising:
- determining a safety reaction time relative to a vehicle driving status;
- evaluating a risk value through inputting the safety reaction time into a cutoff function, wherein the greater the safety reaction time is, the less the corresponding risk value relative to the cutoff function is, and the less the safety reaction time is, the greater the corresponding risk value relative to the cutoff function is, and the cutoff function is an exponential function;
- setting an upper limit time and a lower limit time for the safety reaction time;
- setting a range interval for the risk value;
- defining the exponential function according to the upper limit time, the lower limit time, and the range interval, wherein the upper limit time and the lower limit time are configured to normalize the safety reaction time in the exponential function, and the range interval is related to a frequency of detecting the vehicle driving status;
- and
- slowing down a vehicle, changing to a slow lane, or stopping the vehicle through an in-vehicle system according to the risk value.
4 more elements
A driving risk evaluation system, comprising:
- a sensor, detecting the vehicle driving status;
- a storage, storing a program code;
- and
- a processor, coupled to the sensor and the storage, loading the program code and executing:
- determining a safety reaction time relative to the vehicle driving status;
- evaluating a risk value through inputting the safety reaction time into a cutoff function, wherein the greater the safety reaction time is, the less the corresponding risk value relative to the cutoff function is, and the less the safety reaction time is, the greater the corresponding risk value relative to the cutoff function is, and the cutoff function is an exponential function;
- setting an upper limit time and a lower limit time for the safety reaction time;
- setting a range interval for the risk value;
- defining the exponential function according to the upper limit time, the lower limit time, and the range interval, wherein the upper limit time and the lower limit time are configured to normalize the safety reaction time in the exponential function, and the range interval is related to a frequency of detecting the vehicle driving status;
- and
- slowing down a vehicle, changing to a slow lane, or stopping the vehicle through an in-vehicle system according to the risk value.
8 more elements
Dependencies are inferred from the claim text.