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US 11,697,406 B2Granted
Vehicle operation safety model compliance measurement
AssigneeMobileye Vision Technologies Ltd.
InventorsQianying Zhu, Ping Guo, Xinxin Zhang, Fei Li, Xiangbin Wu
Life of this patent
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Abstract
System and techniques for vehicle operation safety model (VOSM) compliance measurement are described herein. A subject vehicle is tested in a vehicle following scenario against VOSM parameter compliance. The test measures the subject vehicle activity during phases of the following scenario in which a lead vehicle slows and produces log data and calculations that form the basis of a VOSM compliance measurement.
Claims29
An apparatus for vehicle operation safety model compliance measurement, the apparatus comprising:
- an interface to receive data from an external sensor;
- an internal sensor to measure changes in acceleration;
- and
- processing circuitry configured to:
- measure, from data produced by the external sensor, a distance between a test vehicle and a front vehicle when the test vehicle and the front vehicle are in motion and the test vehicle is following the front vehicle;
- measure, using the internal sensor, changes in acceleration of the test vehicle;
- mark a first time in response to braking by the front vehicle;
- detect, from the distance between the test vehicle and the front vehicle, that the test vehicle has entered a dangerous situation, the dangerous situation occurring when the distance between the test vehicle and the front vehicle is less than or equal to a minimum safe distance as defined by the vehicle operation safety model to mark a second time;
- detect, from the changes in acceleration of the test vehicle, braking by the test vehicle to mark a third time, a difference between the second time and the third time being a response time for the test vehicle;
- detect a stop by the test vehicle and the front vehicle to mark a fourth time;
- write to a log:
- the distance between the test vehicle and the front vehicle between the first time and the fourth time;
- the response time;
- acceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time and the second time plus the response time;
- and
- deceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time plus the response time and the fourth time;
- calculate, using data from the log, a maximum acceleration of the test vehicle during the response time;
- calculate, using data from the log, a minimum braking deceleration of the test vehicle after the response time;
- and
- produce a compliance measurement for the test vehicle by comparing the distance between the test vehicle and the front vehicle between the first time and the fourth time, the response time, the maximum acceleration, and the minimum braking;
- deceleration to respective predefined values.
18 more elements
A method for vehicle operation safety model compliance measurement, the method comprising:
- measuring a distance between a test vehicle and a front vehicle when the test vehicle and the front vehicle are in motion and the test vehicle is following the front vehicle;
- measuring changes in acceleration of the test vehicle;
- marking a first time in response to braking by the front vehicle;
- detecting, from the distance between the test vehicle and the front vehicle, that the test vehicle has entered a dangerous situation, the dangerous situation occurring when the distance between the test vehicle and the front vehicle is less than or equal to a minimum safe distance as defined by the vehicle operation safety model to mark a second time;
- detecting, from the changes in acceleration of the test vehicle, braking by the test vehicle to mark a third time, a difference between the second time and the third time being a response time for the test vehicle;
- detecting a stop by the test vehicle and the front vehicle to mark a fourth time;
- logging:
- the distance between the test vehicle and the front vehicle between the first time and the fourth time;
- the response time;
- acceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time and the second time plus the response time;
- and
- deceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time plus the response time and the fourth time;
- calculating, from the logging, a maximum acceleration of the test vehicle during the response time;
- calculating, from the logging, a minimum braking deceleration of the test vehicle the response time;
- and
- producing a compliance measurement for the test vehicle by comparing the distance between the test vehicle and the front vehicle between the first time and the fourth time, the response time, the maximum acceleration, and the minimum braking deceleration to respective predefined values.
13 more elements
A non-transitory machine readable medium including instructions that, when executed by processing circuitry, cause the processing circuitry to perform operations comprising:
- measuring a distance between a test vehicle and a front vehicle when the test vehicle and the front vehicle are in motion and the test vehicle is following the front vehicle;
- measuring changes in acceleration of the test vehicle;
- marking a first time in response to braking by the front vehicle;
- detecting, from the distance between the test vehicle and the front vehicle, that the test vehicle has entered a dangerous situation, the dangerous situation occurring when the distance between the test vehicle and the front vehicle is less than or equal to a minimum safe distance as defined by a vehicle operation safety model to mark a second time;
- detecting, from the changes in acceleration of the test vehicle, braking by the test vehicle to mark a third time, a difference between the second time and the third time being a response time for the test vehicle;
- detecting a stop by the test vehicle and the front vehicle to mark a fourth time;
- logging:
- the distance between the test vehicle and the front vehicle between the first time and the fourth time;
- the response time;
- acceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time and the second time plus the response time;
- and
- deceleration, from the changes in acceleration of the test vehicle, of the test vehicle between the second time plus the response time and the fourth time;
- calculating, from the logging, a maximum acceleration of the test vehicle during the response time;
- calculating, from the logging, a minimum braking deceleration of the test vehicle after the response time;
- and
- producing a compliance measurement for the test vehicle by comparing the distance between the test vehicle and the front vehicle between the first time and the fourth time, the response time, the maximum acceleration, and the minimum braking deceleration to respective predefined values.
13 more elements
Dependencies are inferred from the claim text.