Abstract:
A system includes first and second access points. Each access point includes one or more 802.11 wireless radios configured to communicate with a wireless node. The first and second access points are both configured to wirelessly receive first data from the wireless node at substantially a same time and forward the first data. The first and second access points are also both configured to receive second data for the wireless node. The first access point is configured to wirelessly transmit the second data to the wireless node, and the second access point is configured to refrain from transmitting the second data to the wireless node while the first access point is operating properly.
Abstract:
A fall protection harness or fall protection static line includes one or more straps, an electrical sensing device coupled to the one or more straps, a computer processor coupled to the electrical sensing device, and a transmitter coupled to the computer processor. The one or more straps are made up of an electrically non-conducting thread and an electrically conducting thread. The electrically non-conducting thread and the electrically conducting thread are intertwined, or the electrically conductive thread is intertwined with itself. The electrical sensing device detects a disruption in current in the electrically conducting thread, a disruption in voltage in the electrically conducting thread, or a change in resistance in the electrically conducting thread, which indicates damage to the fall protection harness or a fall by a person wearing the fall protection harness.
Abstract:
A fall protection harness includes a computer processor, an optical transmitter, and an optical receiver coupled. The optical transmitter and the optical receiver are optically coupled. Upon damage to the fall protection harness, the optical coupling between the optical transmitter and the optical receiver is broken, the computer processor senses the break in the optical coupling between the optical transmitter and the optical receiver; and the computer processor generates a signal indicating the damage.
Abstract:
A system includes first and second access points. Each access point includes one or more 802.11 wireless radios configured to communicate with a wireless node. The first and second access points are both configured to wirelessly receive first data from the wireless node at substantially a same time and forward the first data. The first and second access points are also both configured to receive second data for the wireless node. The first access point is configured to wirelessly transmit the second data to the wireless node, and the second access point is configured to refrain from transmitting the second data to the wireless node while the first access point is operating properly.
Abstract:
A fall protection harness has a magnetic sensor coupled to it, and a computer processor is coupled to the magnetic sensor. Upon damage to the fall protection harness, the magnetic sensor senses the damage, the magnetic sensor generates a first signal to the computer processor, and the computer processor generates a second signal indicating the damage.
Abstract:
A system includes multiple nodes, where each node includes one or more 802.11 wireless radios. The nodes are arranged in a hierarchical tree structure in which one or more nodes residing in one level of the tree structure are configured to communicate with one or more nodes residing in another level of the tree structure to propagate information in the tree structure. At least a first of the nodes is configured to operate its associated radio(s) in an 802.11 access point mode and in an 802.11 station mode. The first node is configured to relay data to and from one or more nodes in a lower level of the tree structure using the 802.11 access point mode. The first node is further configured to transmit data to and receive data from one or more nodes in a higher level of the tree structure using the 802.11 station mode.
Abstract:
A system includes multiple nodes, where each node includes one or more 802.11 wireless radios. The nodes are arranged in a hierarchical tree structure in which one or more nodes residing in one level of the tree structure are configured to communicate with one or more nodes residing in another level of the tree structure to propagate information in the tree structure. At least a first of the nodes is configured to operate its associated radio(s) in an 802.11 access point mode and in an 802.11 station mode. The first node is configured to relay data to and from one or more nodes in a lower level of the tree structure using the 802.11 access point mode. The first node is further configured to transmit data to and receive data from one or more nodes in a higher level of the tree structure using the 802.11 station mode.
Abstract:
A fall protection harness includes a computer processor, an optical transmitter, and an optical receiver coupled. The optical transmitter and the optical receiver are optically coupled. Upon damage to the fall protection harness, the optical coupling between the optical transmitter and the optical receiver is broken, the computer processor senses the break in the optical coupling between the optical transmitter and the optical receiver; and the computer processor generates a signal indicating the damage.
Abstract:
A fall protection harness or fall protection static line includes one or more straps, an electrical sensing device coupled to the one or more straps, a computer processor coupled to the electrical sensing device, and a transmitter coupled to the computer processor. The one or more straps are made up of an electrically non-conducting thread and an electrically conducting thread. The electrically non-conducting thread and the electrically conducting thread are intertwined, or the electrically conductive thread is intertwined with itself. The electrical sensing device detects a disruption in current in the electrically conducting thread, a disruption in voltage in the electrically conducting thread, or a change in resistance in the electrically conducting thread, which indicates damage to the fall protection harness or a fall by a person wearing the fall protection harness.