Abstract: A system includes a helically polarized magnet having a plurality of north and south poles circumferentially and helically patterned along a linear axis. Magnetic flux varies at different positions along a linear path in a direction aligned with the linear axis. A multi-axis magnetometer and/or magnetometer array is configured with at least two sensing coils to detect the position of the helically polarized magnet by sensing the magnetic flux variations at the different positions along the linear path.

Abstract: A system includes a helically polarized magnet having a plurality of north and south poles circumferentially and helically patterned along a linear axis. Magnetic flux varies at different positions along a linear path in a direction aligned with the linear axis. A multi-axis magnetometer and/or magnetometer array is configured with at least two sensing coils to detect the position of the helically polarized magnet by sensing the magnetic flux variations at the different positions along the linear path.

Abstract: A system includes a helically polarized magnet having a plurality of north and south poles circumferentially and helically patterned along a linear axis. Magnetic flux varies at different positions along a linear path in a direction aligned with the linear axis. A multi-axis magnetometer and/or magnetometer array is configured with at least two sensing coils to detect the position of the helically polarized magnet by sensing the magnetic flux variations at the different positions along the linear path.

Abstract: A system includes a helically polarized magnet having a plurality of north and south poles circumferentially and helically patterned along a linear axis. Magnetic flux varies at different positions along a linear path in a direction aligned with the linear axis. A multi-axis magnetometer and/or magnetometer array is configured with at least two sensing coils to detect the position of the helically polarized magnet by sensing the magnetic flux variations at the different positions along the linear path.

Abstract: A system (S) for testing of electronic circuits (14) includes at least one input signal (18) influenced by the tested circuit (14) for generating a resultant signal (22) conveying characteristics of selected critical performance parameters from the tested circuit (14). A reference circuit (80) receives comparable test signals (19) and produces a reference resultant signal (23). A comparator block circuit (82) further generates an output signal (52) that results from an application of selected comparison criteria to the signals (22 and 23). The output signal (52) is reflective of desired performance of the electronic circuit (14) that is tested and deterioration with time is detected by analysis and comparison with the results of previous tests.

Abstract: A system wherein a plurality of remote stations, in response to a request from a primary terminal, will transmit requested data to the primary terminal and to a secondary terminal. The secondary terminal is operable to receive and process the data transmitted in synchronism with the requests from the primary, and without any synchronizing information between the primary and secondary terminals. This is accomplished with the provision of data processing means in the two terminals which have identical memory maps of the sequencing operation.

Abstract: A control station in data communication with a plurality of remote stations, each remote station including a receiving opto-isolator device and a transmitting opto-isolator device, each having an LED and an associated light detector. The LED of the receiving opto-isolator is in series circuit arrangement with the detector of the transmitting opto-isolator. A single remote station may be provided or a plurality of remote stations either in series or parallel circuit configuration. If in series configuration, a bypass circuit may be provided in the event of a failure of a particular remote station.

Abstract: In an electrical or electronic system employing numerous remote devices such as relays, lamps, motors, etc., requiring periodic testing to determine their operability, a monitoring circuit is connected to the output of a test signal generator to provide an indication of the operational integrity of the remote device without requiring a separate dedicated electrical lead for monitoring the operational integrity of the remote device.