Abstract: Systems and methods for operating an RFID transponder (102). The methods involve: performing energy harvesting operations by a voltage scavenging device (130) of the RFID transponder to collect energy from an RF field, magnetic field, heat, light or movement of the RFID transponder; increasing or decreasing, by a voltage converter of the RFID transponder, a voltage level of a signal received from the voltage scavenging device to a sub-threshold voltage level that is at least one order of magnitude below a normal operating range for the RFID transponder; and supplying an operating voltage at the sub-threshold voltage level to at least a transceiver circuit (124) of the RFID transponder.

Abstract: A people counting system and method for the automatic reconfiguration of a failed people counting sensor device in a people counting system. The system includes a plurality of addressable people counting sensor devices defining a cluster having a master device in communication with at least one slave device, each of the master device and the slave devices having a corresponding Media Access Control (“MAC”) address. The master device is adapted to sequentially transmit power-on commands to each of the slave devices, assign a different node address to each of the slave devices, receive an association of the MAC address of the master device to the node address and MAC address of each of the slave devices to form a cluster configuration, store the cluster configuration as a cluster configuration table, and replicate the cluster configuration table to the slave devices. A dynamic host configuration protocol (DHCP) server assigns an IP public address to the master device.

Abstract: A people counting system and method for the automatic reconfiguration of a failed people counting sensor device in a people counting system. The system includes a plurality of addressable people counting sensor devices defining a cluster having a master device in communication with at least one slave device, each of the master device and the slave devices having a corresponding Media Access Control (“MAC”) address. The master device is adapted to sequentially transmit power-on commands to each of the slave devices, assign a different node address to each of the slave devices, receive an association of the MAC address of the master device to the node address and MAC address of each of the slave devices to form a cluster configuration, store the cluster configuration as a cluster configuration table, and replicate the cluster configuration table to the slave devices. A dynamic host configuration protocol (DHCP) server assigns an IP public address to the master device.

Abstract: A differential DC/RF bridge-configured flowcell particle detector includes a flowcell and an adjustable circuit model of the flowcell, which are differentially coupled through output amplifier circuits and galvanically isolated from sources of signal degradation. The output of the difference amplifier is coupled to a DC/RF discriminator and associated downstream processing circuitry. Respective amplitude and phase outputs of the DC/RF discriminator are used to control amplitude and phase adjustment circuits of the adjustable circuit model, so as to automatically track amplitude and phase variations in the non-linear behavior of the flowcell, to mirror the characteristic impedance of the flowcell, thereby making the bridge insensitive to variations in the flowcell.