Abstract: A switch includes first and second transistors electrically connected in series between the switch's first and second terminals. Each of the first and second transistors includes first and second transistor terminals between which electrical current can flow. A first metal bus bar includes a first channel through which fluid can flow. A second metal bus bar includes a second channel through which fluid can flow. The first transistor terminals of the first and second transistors are electrically connected to the first and second metal bus bars, respectively. A first driver circuit controls the first transistor. A second driver circuit controls the second transistor. A control unit can generate a first signal. A first distribution network can transmit the first signal to the first and second drivers at the same time.

Abstract: An apparatus for electrically connecting and disconnecting a power converter to a voltage supply. The apparatus may include a first bus bar configured for electrical connection to the power converter, a first tube received in the first bus bar, wherein the first tube extends between a first end and a second end, wherein the first tube is configured to electrically insulate fluid flowing through it from the first bus bar, a second bus bar, a second tube received in the second bus bar, wherein the second tube extends between first and second ends, wherein the second tube is configured to electrically insulate fluid flowing through it from the second bus bar, and a first switch electrically connected between the first and second bus bars.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively filling earth into a fill location in a dig site. A first earth shaping vehicle configured with a hauling tool carrying a volume of earth navigates to the fill location. At the fill location, the first earth shaping vehicle navigates over a target tool path to fill earth from the hauling tool into the fill location. As the first earth shaping vehicle fills earth into the fill location, a measurement sensor coupled to the first earth shaping vehicle measures a compaction level of earth filled into the fill location. If the measured compaction level is determined to be below a threshold compaction level, the first earth shaping vehicle communicates a request for a second earth shaping vehicle configured with a compaction tool to compact earth in the fill location.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively filling earth into a fill location in a dig site. A first earth shaping vehicle configured with a hauling tool carrying a volume of earth navigates to the fill location. At the fill location, the first earth shaping vehicle navigates over a target tool path to fill earth from the hauling tool into the fill location. As the first earth shaping vehicle fills earth into the fill location, a measurement sensor coupled to the first earth shaping vehicle measures a compaction level of earth filled into the fill location. If the measured compaction level is determined to be below a threshold compaction level, the first earth shaping vehicle communicates a request for a second earth shaping vehicle configured with a compaction tool to compact earth in the fill location.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively executing an earth shaping routine in a dig site with other earth shaping vehicles. A first earth shaping vehicle configured with a tool for excavating earth navigates to a dig location containing earth to be excavated. The first earth shaping vehicle identifies a loading location where the first vehicle may transfer earth to a second earth shaping vehicle configured with a tool for hauling earth between locations. Upon navigating to the loading location and detecting the second earth shaping vehicle at the loading location, the first earth shaping vehicle transfers earth from its excavation tool to the hauling tool of the second earth shaping vehicle.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively executing an earth shaping routine in a dig site with other earth shaping vehicles. A first earth shaping vehicle configured with a tool for excavating earth navigates to a dig location containing earth to be excavated. The first earth shaping vehicle identifies a loading location where the first vehicle may transfer earth to a second earth shaping vehicle configured with a tool for hauling earth between locations. Upon navigating to the loading location and detecting the second earth shaping vehicle at the loading location, the first earth shaping vehicle transfers earth from its excavation tool to the hauling tool of the second earth shaping vehicle.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively hauling earth from a first location to a second location in a dig site with other earth shaping vehicles. A first earth shaping vehicle navigates through a set of coordinates within the coordinate space that represent a path from the start location to the end location. As the first earth shaping vehicle navigates towards the end location, the set of coordinates are dynamically updated to avoid collisions with neighboring earth shaping vehicles in the dig site. The updates to the set of coordinates are determines based on a position of the first earth shaping vehicle relative to a position of the second earth shaping vehicle. The velocity of the first earth shaping vehicle may be adjusted to maintain a threshold distance between the first earth shaping vehicle and each neighboring earth shaping vehicle.

Abstract: This description provides an autonomous or semi-autonomous earth shaping vehicle that is capable of cooperatively filling earth into a fill location in a dig site. A first earth shaping vehicle configured with a hauling tool carrying a volume of earth navigates to the fill location. At the fill location, the first earth shaping vehicle navigates over a target tool path to fill earth from the hauling tool into the fill location. As the first earth shaping vehicle fills earth into the fill location, a measurement sensor coupled to the first earth shaping vehicle measures a compaction level of earth filled into the fill location. If the measured compaction level is determined to be below a threshold compaction level, the first earth shaping vehicle communicates a request for a second earth shaping vehicle configured with a compaction tool to compact earth in the fill location.