Abstract: A method for wireless authentication of a device to a machine is provided. The device has a sensor and the method includes sensing, by a sensor of the device, a first input pattern of physical parameters received at the device. The method includes wirelessly transmitting, from the device, an identification signal to a machine upon said sensing of the first input pattern. The method includes wirelessly receiving, at the device, an authentication signal indicating an authentication of the device, wherein the device is configured to interact with the machine upon the wireless receiving of the authentication.

Abstract: A method for wireless authentication of a device to a machine is provided. The device has a sensor and the method includes sensing, by a sensor of the device, a first input pattern of physical parameters received at the device. The method includes wirelessly transmitting, from the device, an identification signal to a machine upon said sensing of the first input pattern. The method includes wirelessly receiving, at the device, an authentication signal indicating an authentication of the device, wherein the device is configured to interact with the machine upon the wireless receiving of the authentication.

Abstract: A machine security system for authenticating a machine key is disclosed. The machine security system comprises a microcontroller for detecting insertion of a machine key in a key slot of the machine. The machine key comprises of an embedded transponder. Based on detection of the machine key in the key slot, the microcontroller transmits an interrogation signal for charging the transponder. The microcontroller then receives a response signal from the transponder. The transponder sends the response signal when substantially charged by the interrogation signal. The response signal is encoded with an authentication code for authenticating the machine key. The microcontroller decodes the authentication code from the received response signal and authenticates the machine key based on the decoded authentication code.

Abstract: A particulate trap regeneration system is provided, which may include a particulate trap having a filter medium configured to remove one or more types of particulate matter from an exhaust flow of an engine and a regeneration device configured to reduce an amount of particulate matter in the particulate trap, as well as a radio frequency-based particulate loading monitoring system configured to determine an amount of particulate matter trapped by the filter medium. The particulate loading monitoring system may include at least one radio frequency transmitting probe configured to transmit radio frequency signals of predetermined magnitude and predetermined frequency toward the filter medium and at least one radio frequency receiving probe configured to receive and measure the magnitude of received radio frequency signals that pass through the filter medium.

Abstract: A particulate sensing system for a particulate trap including a radio frequency transmit circuit and a radio frequency receive circuit is disclosed. The transmit circuit may include a wideband signal generator configured to produce a wideband radio frequency signal and a wideband radio frequency amplifier, coupled to the wideband signal generator. The transmit circuit may include a transmit antenna coupled to the wideband radio frequency amplifier and configured to propagate the wideband radio frequency signal through a filter medium. The receive circuit may include a receive antenna configured to receive the wideband radio frequency signal that has been propagated through the filter medium, and a bandpass filter coupled to the receive antenna and configured to limit a frequency range of the received wideband radio frequency signal.