Case Corporation

Cnh America LLC

Mohammad Javaid Arshad

Alan D Berger

Danley C Chan

Daniel L Maierhafer

Peter John Dix

Mark Douglas Klassen

Alan G Leupold

Paul Eugene Wibbels

Leonid Chernyavsky

Danley C K Chan

Patrick T Hinke

A controller area network based climate control system for a work machine, and a method of operation of the same, which advantageously and economically integrates into and utilizes the resources and capabilities of a CAN of a work machine, including, but not limited to, shared data from other systems of the machine, particularly engine data including engine operating speed and temperature, for controlling climate control system operation, as well as for troubleshooting and diagnosing problems.

Controller area network based climate control system for a self-propelled work machine and method of operation of the same

A method and system for controlling the operation of a vehicle is disclosed that includes a radio frequency transponder and a vehicle configured to respond to data stored in the transponder by preventing or disabling operation of the vehicle under certain conditions indicated by data stored in the transponder. A communications controller receives the data from the transponder, then monitors the operation of the vehicle to make sure it is operated within the limits that are stored in the transponder. By communicating with other controllers on the vehicle that are in charge of other subsystems, it receives information relating to whether the operational limits of the vehicle have been approached or exceeded, and takes appropriate action in that event, the action may include not enabling the vehicle initially, or disabling the vehicle, or causing an operator display to indicate which limit has been exceeded or approached.

Transponder communication and control system for a vehicle

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the piston where the beam is reflected. The beam then exits the cylinder through at least two light guides connected to two corresponding optical fibers. Each of the optical fibers are joined together into one fiber that carries the reflected beam of light to a photo-diode located remote from the cylinder. A control circuit measures the time of flight of the laser beam.

Multi-fiber cylinder position sensor using time-of-flight technique

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A laser diode emits a pulse or pulses of light that form laser light beam. These pulses are provided to two or more optical fibers that extend into two or more corresponding cylinders. For each of these cylinders, the optical fiber enters the cylinder at one end of the cylinder and directs a laser beam into the cylinder, and off the piston where the beam is reflected. The reflected beam then exits the cylinder through at least two corresponding optical fibers disposed on either side of the fiber that conducted the light into the cylinder. Each of the optical fibers that receives reflected light is joined together with the others of the optical fibers into one fiber that carries the reflected beam of light to a photo-diode located remote from the cylinder. Each of the photo diodes for each of the two or more cylinders has a corresponding photo diode amplifier. The output of these amplifiers are coupled together and provided to a pulse expansion circuit. The timing circuit that generates the pulse that triggers the laser diode also generates gate pulses for each of the photo diode amplifiers. These gate signals suppress the output of all but one of the photo diode amplifiers. In this manner, the pulse expansion circuit and phase comparator circuits that receive the photo diode amplifier signals will generate an output signal indicative of the time-of-flight of the laser light pulse in only one cylinder at a time. This permits the system to select a specific cylinder and generate a signal indicative of the position of the piston within the cylinder: the time-of-flight of the laser light pulse.

Multi-fiber multi-cylinder position method and apparatus using time-of-flight technique

A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the piston where the beam is reflected. The beam then exits the cylinder through a second light guide. A control unit measures the time of flight of the laser beam and calculates the piston position.

Laser based reflective beam cylinder sensor

A sensor system for use on drilling equipment to detect the presence of high voltages during horizontal or vertical drilling and providing an alarm signal corresponding to one of three possibilities: (1) the drilling tool hitting a high voltage line; (2) the drilling tool remaining in contact after hitting the high voltage line; and (3) an exposed or damaged high voltage line in close proximity to the drilling implement. The sensor system detects alternating current, converts the alternating current signal to a pseudo square waveform signal, compares the magnitude of the square waveform signal with a reference voltage, and sounds an alarm if the magnitude of the square waveform signal exceeds the reference voltage. The sensor system also incorporates a self-test circuit which allows an operator to check its functionality before use. The operator can also check the sensor at any time during drilling process.

Growing community of inventors

Naperville, IL, United States of America

Mohammad Javaid Arshad