Caterpillar Inc.

Mark T DeCou

Andrew Alfred Knitt

Joshua D Reed

Arjun Veneshetty

Bradley Bergerhouse

Frank B Walton

Matthew Daniel Fike

Brian D Huggins

Scott E Ligeski

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.

System and method for wirelessly authenticating a device having a sensor

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. Further, the system may include a temperature sensing device configured to take a temperature measurement indicative of a temperature of the particulate trap at the time the radio signals are received by the receiving probe and a controller, which may be configured to determine, based on the measured magnitude of received radio frequency signals, a particulate loading value indicative of the amount of particulate matter trapped in the filter medium. The controller may also be configured to perform a temperature compensation including modifying, based on the temperature measurement, at least one of the following: the measured magnitude of the received radio frequency signals that pass through the filter medium or the particulate loading value.

Radio frequency-based particulate loading monitoring system

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. The receive circuit may include a radio frequency power sensing device coupled to the bandpass filter and configured to sense a power level of the received wideband radio frequency signal and configured to output a direct current voltage proportional to the total power received across an operating frequency range of the radio frequency power sensing device.

Radio frequency particulate sensing system

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Peoria, IL, United States of America

Mark T DeCou