Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: A concrete mixer vehicle includes a mixer drum, an additive admixture system, and a controller. The additive admixture system includes an air inlet valve, a fluid valve, an air valve, and a pump. The controller is configured to operate the additive admixture system to transition the additive admixture system between an additive addition mode, a drain mode, and a system clear mode. The controller transitions the additive admixture system into the additive addition mode and operates the pump until a desired amount of an additive is added to the mixer drum, transitions the additive admixture system into the drain mode for a predetermined amount of time in response to the desired amount of additive being added to the mixer drum, and transitions the additive admixture system into the system clear mode for a predetermined amount of time to clear stagnant fluid or built up mixture from the additive admixture system.

Abstract: A method of authenticating a mobile device over Bluetooth advertisements according to one embodiment includes broadcasting, by an access control device, a first Bluetooth advertisement including a challenge message generated by the access control device, receiving, by the mobile device, the first Bluetooth advertisement including the challenge message, broadcasting, by the mobile device, a second Bluetooth advertisement including a challenge response message generated by the mobile device based on the challenge message, receiving, by the access control device, the second Bluetooth advertisement including the challenge response message, and determining, by the access control device, whether the mobile device is authorized to perform an action with respect to the access control device by verifying the challenge response message.

Abstract: A concrete mixer vehicle includes a mixer drum, an additive admixture system, and a controller. The additive admixture system includes an air inlet valve, a fluid valve, an air valve, and a pump. The controller is configured to operate the additive admixture system to transition the additive admixture system between an additive addition mode, a drain mode, and a system clear mode. The controller transitions the additive admixture system into the additive addition mode and operates the pump until a desired amount of an additive is added to the mixer drum, transitions the additive admixture system into the drain mode for a predetermined amount of time in response to the desired amount of additive being added to the mixer drum, and transitions the additive admixture system into the system clear mode for a predetermined amount of time to clear stagnant fluid or built up mixture from the additive admixture system.

Abstract: A concrete mixer vehicle includes a mixer drum, an additive admixture system, and a controller. The additive admixture system includes an air inlet valve, a fluid valve, an air valve, and a pump. The controller is configured to operate the additive admixture system to transition the additive admixture system between an additive addition mode, a drain mode, and a system clear mode. The controller transitions the additive admixture system into the additive addition mode and operates the pump until a desired amount of an additive is added to the mixer drum, transitions the additive admixture system into the drain mode for a predetermined amount of time in response to the desired amount of additive being added to the mixer drum, and transitions the additive admixture system into the system clear mode for a predetermined amount of time to clear stagnant fluid or built up mixture from the additive admixture system.

Abstract: A concrete mixer vehicle includes a mixer drum, an additive admixture system, and a controller. The additive admixture system includes an air inlet valve, a fluid valve, an air valve, and a pump. The controller is configured to operate the additive admixture system to transition the additive admixture system between an additive addition mode, a drain mode, and a system clear mode. The controller transitions the additive admixture system into the additive addition mode and operates the pump until a desired amount of an additive is added to the mixer drum, transitions the additive admixture system into the drain mode for a predetermined amount of time in response to the desired amount of additive being added to the mixer drum, and transitions the additive admixture system into the system clear mode for a predetermined amount of time to clear stagnant fluid or built up mixture from the additive admixture system.

Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: A method of authenticating a mobile device over Bluetooth advertisements according to one embodiment includes broadcasting, by an access control device, a first Bluetooth advertisement including a challenge message generated by the access control device, receiving, by the mobile device, the first Bluetooth advertisement including the challenge message, broadcasting, by the mobile device, a second Bluetooth advertisement including a challenge response message generated by the mobile device based on the challenge message, receiving, by the access control device, the second Bluetooth advertisement including the challenge response message, and determining, by the access control device, whether the mobile device is authorized to perform an action with respect to the access control device by verifying the challenge response message.

Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: An exemplary credential reader includes a touch-sensitive region and is configured to generate tap information and/or swipe information in response to the touch-sensitive region being tapped and/or swiped. In certain forms, the touch-sensitive region is a non-displaying track pad. In other forms, the touch-sensitive region is a touch-sensitive display. A lockset including the credential reader further includes a controller configured to generate credential information based upon information received from the credential reader. The controller may compare the credential information to an authorized credential and transmit a grant/deny signal based upon the comparing.

Abstract: An exemplary credential reader includes a touch-sensitive region and is configured to generate tap information and/or swipe information in response to the touch-sensitive region being tapped and/or swiped. In certain forms, the touch-sensitive region is a non-displaying track pad. In other forms, the touch-sensitive region is a touch-sensitive display. A lockset including the credential reader further includes a controller configured to generate credential information based upon information received from the credential reader. The controller may compare the credential information to an authorized credential and transmit a grant/deny signal based upon the comparing.

Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: A method of authenticating a mobile device over Bluetooth advertisements according to one embodiment includes broadcasting, by an access control device, a first Bluetooth advertisement including a challenge message generated by the access control device, receiving, by the mobile device, the first Bluetooth advertisement including the challenge message, broadcasting, by the mobile device, a second Bluetooth advertisement including a challenge response message generated by the mobile device based on the challenge message, receiving, by the access control device, the second Bluetooth advertisement including the challenge response message, and determining, by the access control device, whether the mobile device is authorized to perform an action with respect to the access control device by verifying the challenge response message.

Abstract: A concrete mixer vehicle includes a mixer drum, an additive admixture system, and a controller. The additive admixture system includes an air inlet valve, a fluid valve, an air valve, and a pump. The controller is configured to operate the additive admixture system to transition the additive admixture system between an additive addition mode, a drain mode, and a system clear mode. The controller transitions the additive admixture system into the additive addition mode and operates the pump until a desired amount of an additive is added to the mixer drum, transitions the additive admixture system into the drain mode for a predetermined amount of time in response to the desired amount of additive being added to the mixer drum, and transitions the additive admixture system into the system clear mode for a predetermined amount of time to clear stagnant fluid or built up mixture from the additive admixture system.

Abstract: An exemplary credential reader includes a touch-sensitive region and is configured to generate tap information and/or swipe information in response to the touch-sensitive region being tapped and/or swiped. In certain forms, the touch-sensitive region is a non-displaying track pad. In other forms, the touch-sensitive region is a touch-sensitive display. A lockset including the credential reader further includes a controller configured to generate credential information based upon information received from the credential reader. The controller may compare the credential information to an authorized credential and transmit a grant/deny signal based upon the comparing.

Abstract: An exemplary apparatus includes a sensor, control circuitry, and an alert mechanism. The sensor is configured to sense one or more users entering a passageway. The control circuitry in communication with the sensor and a credential reader, and is configured to count a number of the one or more users entering the passageway, to count a number of authorized credentials presented to the credential reader, and to transmit an alert signal based upon the number of the one or more users and the number of authorized credentials. The alert mechanism in communication with the control circuitry, and is configured to perform an alert operation in response to the alert signal.

Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: An exemplary method includes operating an access control device in a standalone mode, which involves controlling a locked/unlocked state of the access control device locally, and operating a wireless transceiver of the access control device in a lower-power state in which the wireless transceiver is operable to receive a lockdown signal from an external device. The method further includes operating the access control device in a networked lockdown mode in response to receiving the lockdown signal from the external device. Operating the access control device in the networked lockdown mode involves placing the access control device in a locked state, establishing a wireless communication connection with the external device via the wireless transceiver while operating the wireless transceiver in a higher-power state.

Abstract: An exemplary credential reader includes a touch-sensitive region and is configured to generate tap information and/or swipe information in response to the touch-sensitive region being tapped and/or swiped. In certain forms, the touch-sensitive region is a non-displaying track pad. In other forms, the touch-sensitive region is a touch-sensitive display. A lockset including the credential reader further includes a controller configured to generate credential information based upon information received from the credential reader. The controller may compare the credential information to an authorized credential and transmit a grant/deny signal based upon the comparing.

Abstract: A method according to one embodiment includes determining, by a host processor of a master device, a combined cost of an outgoing message transmission of the master device and an expected response message from a slave device; determining, by the host processor, a number of available tokens associated with data transmission; reducing, by the host processor, the number of available tokens by the combined cost in response to a determination that the combined cost does not exceed the number of available tokens; periodically increasing the number of available tokens up to a token maximum by a predefined number of tokens based on a token refill rate; and sending the outgoing message from the host processor to Bluetooth Low Energy communication circuitry of the master device in response to the determination that the combined cost does not exceed the number of available tokens.