A safe driving notification system includes a wearable module including a sensor unit configured to recognize a gaze of a driver in a vehicle or a driving direction of the vehicle, and a head unit configured to judge a driver's forward gazing state based on the driver's gaze or viewing direction acquired from the wearable module and to display a warning message.

A system for use at a vehicle to estimate vehicle pitch angle and road grade angle, in real time and generally simultaneously. The system includes a sensor configured to measure vehicle pitch rate, a processor, and a computer-readable medium. The medium includes computer-executable instructions that, when executed by the processor, cause the processor to perform operations comprising estimating, using an observer and the vehicle pitch rate measured by the sensor, an estimated vehicle pitch rate. The operations further comprise estimating, using an observer and the measured vehicle pitch rate, the vehicle pitch angle, and estimating, based on the estimated vehicle pitch rate and the vehicle pitch angle estimated, the road grade angle.

A system, for use at a vehicle to estimate vehicle roll angle and road bank angle, in real time and generally simultaneously. The system includes a sensor configured to measure vehicle roll rate, a processor; and a computer-readable medium. The medium includes instructions that, when executed by the processor, cause the processor to perform operations comprising estimating, using an observer and the vehicle roll rate measured by the sensor, a vehicle roll rate. The operations also include estimating, using an observer and a measured vehicle roll rate, the vehicle roll angle, and estimating, based on the vehicle roll rate estimated and the vehicle roll angle estimated, the road bank angle.

A method for compensating sensor tolerances of accelerometers of a vehicle. The method includes following steps: recording of measurement signals of at least three similarly oriented accelerometers, calculation of an acceleration (a.sub.b,z) at a reference position in the spatial direction, which corresponds to the orientation of the accelerometers, low-pass filtering of the measurement signals, determination of tolerance parameters (c.sub.x, c.sub.y, c.sub.z) of each sensor via an optimization method with the aid of the calculated acceleration (a.sub.b,z) at the reference position, and calculation of the adjusted measurement signals from the recorded measurement signals and the tolerance parameters (c.sub.x, c.sub.y, c.sub.z).

A device for determining positional information relating to the position of a vehicle is configured to determine a measured value of an acceleration vector of the vehicle, and to determine a value of a dynamic component of the measured value of the acceleration vector caused by a movement of the vehicle. The device is further configured to determine an estimated value of the gravity vector based on the measured value of the acceleration vector and based on the value of the dynamic component, and to determine positional data relating to the position of the vehicle based on the estimated value of the gravity vector.

A safety arrangement for a vehicle. The safety arrangement has a control unit; one or more sensors, a road detection arrangement; and one or more vehicle safety systems. The control unit processes the signals from the sensors and determines whether the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. The control unit will activate one or more of the vehicle safety systems if it is determined that the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. Signals, or derived quantities, from the sensors are compared against a threshold to determine whether to activate a vehicle safety system. A first threshold level is used if the vehicle has not or is not likely to leave the road, and a second threshold level is used if the vehicle has or is likely to leave the road.

A method of angle estimation for use in a vehicle which is travelling on a surface. The vehicle includes a vehicle body having a first axis and being attached to at least two wheels. The method includes the steps of: providing a first height sensor for measuring h.sub.1, the height of the vehicle body with respect to the first wheel; providing a second height sensor for measuring h.sub.2, the height of the vehicle body with respect to the second wheel; providing a surface angle sensor for measuring .sub.road, the angle of the surface in relation to a horizontal plane; measuring the values of h.sub.1, h.sub.2 and .sub.road; using the values of h.sub.1 and h.sub.2 to calculate .sub.rel, the angle of the vehicle body relative to the surface; and calculating an estimate of .sub.glob, the angle between the first axis and the horizontal plane, from .sub.road and .sub.rel.

The present disclosure obtains a controller and a control method capable of improving safety of a lean vehicle.

In a controller (30) and a control method according to the present disclosure, an execution section of the controller (30) executes a first operation as an operation that causes a lean vehicle (1) to execute a cruise control based on a positional relationship information between the lean vehicle (1) and a preceding vehicle preceding the lean vehicle (1). When a speed information, which is information about a speed of the lean vehicle (1) and is acquired during the first operation, indicates that the lean vehicle (1) is decelerated to a reference speed, the execution section executes, instead of the first operation, a second operation as an operation that causes the lean vehicle (1) to execute the cruise control regardless of the positional relationship information.

A system (1) for efficiently determining a driving behaviour of a driver driving a vehicle. The system includes a 3-axis accelerometer (2) generating accelerometer data (3), a direction sensor (4) generating direction data (5) and orientation sensor (6) generating orientation and angular velocity data (7), all placed inside the vehicle. The system (1) also includes a processing unit (8) which processes the accelerometer data (3), the direction data (5) and the orientation data (7), and calibrates the accelerometer data (3) to generate a calibrated accelerometer data (9). The calibrated accelerometer data (9) is used in determining the driving behaviour of the driver of the vehicle and generate Driving Deficiency Alerts, including but not limited to Over-speeding. Hard acceleration. Sudden Braking, Fast Cornering, Quick Lane Changing, Distracted Driving, Dangerous Driving over bumps and Crash Detection.

A damping control system for a vehicle having a suspension located between a plurality of ground engaging members and a vehicle frame includes at least one adjustable shock absorber having an adjustable damping profile.