Volvo Truck Corporation

Volvo Autonomous Solutions Ab

Jonas Hagerskans

Kristoffer Tagesson

Vinzenz Bandi

A wireless control system comprises a plurality of local stations linked by a communication network. Each local station transmits, in a respective radio coverage area, an enduring status signal. An autonomous vehicle is authorized to move while it receives the status signal. When an emergency stop switch of the local station is activated, the local station interrupts its transmission of the status signal. It also instructs one or more further local stations, to which it is linked by a communication network, to interrupt their transmission of the status signal. In this way, the activation of the local emergency stop switch will have effect throughout the control system and will eventually bring all autonomous vehicles to a halt.

Wireless control system for autonomous vehicles operating in an extended area

A method performed by a control unit for handling safe stop mode of a vehicle. The control unit obtains an activation request for activating the safe stop mode. When the activation request has been obtained, the control unit verifies that all safety conditions of the vehicle are fulfilled. The control unit activates the safe stop mode when the activation request has been obtained and when all safety conditions are fulfilled. The control unit triggers at least one light source to be turned on when all safety conditions are fulfilled. After the safe stop mode has been activated, the control unit obtains an inactivation request for inactivating the safe stop mode of the vehicle. The control unit inactivates the safe stop mode of the vehicle when the inactivation request has been obtained.

Method and control unit for handling safe stop mode of a vehicle

A brake system in a vehicle includes a brake circuit arranged to contain pressurized brake fluid; a parking brake acting on at least one wheel of the vehicle, the parking brake connected to the brake circuit and configured to be engaged when the pressure in the brake circuit is below a threshold pressure; and at least two evacuation valves, each configured to evacuate pressurized brake fluid from the brake circuit in response to a control signal, for thereby engaging the parking brake.

Brake system for an autonomous vehicle

The present disclosure relates to a method for controlling a lifting and lowering sequence of a load carrying body () of a vehicle () and to a vehicle comprising a chassis structure () and the load carrying body () pivotally mounted on the chassis structure () with respect to a pivot axis being substantially parallel to either a pitch axis (Y) or a roll axis (X) of the vehicle, wherein the vehicle () comprises sensing means () provided on the chassis structure for measuring roll angle and pitch angle of the chassis structure and sensing means () provided on the load carrying body for measuring roll angle and pitch angle of the load carrying body. The method comprises the steps of: —(S) measuring roll angle and pitch angle of the chassis structure and of the load carrying body during the lifting and lowering sequence, by means of the sensing means, —(S) determining absolute roll angle and pitch angle of the chassis structure and the load carrying body, respectively, with respect to a reference, —(S) determining a relative roll angle between the chassis structure and the load carrying body by comparing the measured roll angles of the chassis structure and the load carrying body when the load carrying body is pivotally mounted with respect to the pivot axis being substantially parallel to the pitch axis, or determining a relative pitch angle between the chassis structure and the load carrying body by comparing the measured pitch angles of the chassis structure and the load carrying body when the load carrying body is pivotally mounted with respect to the pivot axis being substantially parallel to the roll axis, —(S) controlling the lifting and lowering sequence at least based on the determined absolute and relative angles.

Method for controlling a lifting and lowering sequence of a vehicle and a vehicle comprising a chassis structure and a load carrying body

The present disclosure relates to an autonomous vehicle control system () for providing motion control of an autonomous vehicle (), comprising: —a primary control unit () configured to perform longitudinal and lateral motion control of the vehicle during normal operation, —a secondary back-up control unit () configured to perform back-up longitudinal motion control when an emergency mode has been enabled, wherein the primary control unit is further configured to perform back-up lateral motion control when the emergency mode has been enabled. The invention further relates to a method for providing motion control of an autonomous vehicle and to an autonomous vehicle.

Growing community of inventors

Landvetter, Sweden

Jonas Hagerskans