Abstract: A system according to one embodiment includes an access control device comprising a lock mechanism configured to secure access to a passageway, and a UWB accessory device configured to receive a credential of the mobile device via Bluetooth communication, determine, using UWB ranging of the UWB accessory device, a location of a mobile device relative to the passageway secured by the lock mechanism of the access control device, determine whether a user of the mobile device intends to access the passageway based on the determined location of the user relative to the passageway, and communicate an indication that the user intends to access the passageway to the electronic lock via Bluetooth communication, and wherein the access control device is configured to unlock the lock mechanism in response to the indication that the user intends to access the passageway.

Abstract: A method according to an embodiment includes receiving UWB data indicative of a distance of a mobile device relative to the access control device and a SNR of signals received by a plurality of UWB antennas, inferring a side of the passageway at which the mobile device is located based on the distance of the mobile device relative to the access control device and also based on the SNR of the signals, estimating a travel time of the mobile device to the passageway based on the UWB data if the inferred side of the passageway based on the distance of the mobile device is different from the side of the passageway inferred based on the SNR of the signals, and determining the side of the passageway at which the mobile device is located to be an unsecure side of the passageway if the travel time exceeds a predefined threshold time.

Abstract: A method according to an embodiment includes receiving UWB data by an access control device, performing predictive analysis on the UWB data to generate expected location data associated with a location of a mobile device, determining a velocity of the mobile device and a heading of the mobile device based on the UWB data, determining whether the mobile device is on course to a passageway associated with the access control device based on the velocity and the heading of the mobile device, performing state estimation to determine whether the mobile device is within a secure distance threshold from the passageway, wherein the secure distance threshold dynamically changes based on the velocity of the mobile device, and inferring ingress intent of a user of the mobile device in response to determining that the mobile device is within the secure distance threshold and on course to the passageway.

Abstract: An electronic lock according to an embodiment includes an exterior escutcheon on an unsecure side of the door, an interior escutcheon on a secure side of the door, a printed circuit board assembly (PCBA) positioned within the exterior escutcheon, and a plurality of ultra wideband (UWB) antennas secured to an exterior-facing side of the PCBA, wherein the plurality of UWB antennas comprises a first UWB antenna and a second UWB antenna configured to operate on a first UWB channel, and wherein the second UWB antenna is positioned no greater than one half of a wavelength of the first UWB channel from the first UWB antenna along a first axis.

Abstract: A system according to one embodiment includes an access control device comprising a lock mechanism configured to secure access to a passageway, and a UWB accessory device configured to receive a credential of the mobile device via Bluetooth communication, determine, using UWB ranging of the UWB accessory device, a location of a mobile device relative to the passageway secured by the lock mechanism of the access control device, determine whether a user of the mobile device intends to access the passageway based on the determined location of the user relative to the passageway, and communicate an indication that the user intends to access the passageway to the electronic lock via Bluetooth communication, and wherein the access control device is configured to unlock the lock mechanism in response to the indication that the user intends to access the passageway.

Abstract: A power train for a vehicle includes a gearbox with an input shaft and an output shaft and is configured such that the input shaft drives the output shaft at a single speed ratio in a first direction and a single speed ratio in a second direction. The output shaft is coupleable with the front and rear vehicle axles to separately drive each axle. Further, a continuously variable transmission is connected with an engine shaft and with the gearbox input shaft such that the engine shaft drives the input shaft within a range of speed ratios from less than 1 to greater than 3. Front and rear differentials are coupled with each axle and with the output shaft and drive the axles at different speed ratios such that a base surface drives the front axle independently of the front differential when at least one rear wheel rolls upon the surface.