Sections of a linear motor track can each include a single power sensor configured to detect a power current in an erroneous state and one or more reference sensors configured to detect reference currents in erroneous states. The power sensor can be arranged between multiple drive coils of a section and a DC power rail (or mid-bus) for the drive coils. The power sensor can produce a single isolated output to a processor for the section, and the processor, in turn, can compare the output to a threshold for determining an error. The one or more reference sensors can be arranged between lower switches and a DC-reference bus, thereby providing a DC-referenced sensing signal for the drive coil currents. By referencing the processor to the same rail as the DC-referenced current sensing circuit, the reference sensors can produce outputs to the processor without any need for isolation.

Electrical energy storage system (1), comprising at least two strings (STR1, STR2, STR3) interconnected in parallel connection, wherein the strings each have at least two electrical energy storage units (15) interconnected in series connection, characterized in that at least one first electrically conductive cross-connection (11) between electrical energy storage units (15) at an identical first electrical potential in the strings (STR1, STR2, STR3) interconnected in parallel connection is electrically conductively connected via at least one diode (12) to a means for detecting an electric current (13) and a controllable electrical energy source (14), wherein the diode (12) is not incorporated into the first electrically conductive cross-connection (11).

An adapter for testing electrical equipment can include a first receptacle end having at least one first coupling feature, where the at least one first coupling feature is configured to couple to a power source and a first electrical device, where the first receptacle end is configured to receive from the power source at least one first test signal and send the at least one first test signal to the first electrical device. The adapter can also include a sensing device configured to receive at least one first response signal from the first electrical device, where the at least one first response signal is in response to and based on the first electrical device receiving the at least one first test signal.

A wire harness conduction inspection method performed by a computer includes determining whether wirings included in two wire harnesses arranged in adjacent divided areas are conducted by a connector that connects the two wire harnesses, based on an actual wiring diagram that describes wirings to drive a certain electrical system mounted on a vehicle, a matrix table that describes specification for a wire harness to identify the electrical system constituting a portion of a circuit, for each wire harness mounted on the vehicle, and a connector diagram that describes a connector, a corresponding relationship between the connector and the wirings, and specification for the connector to identify the electrical system constituting the portion of the circuit.

A system for monitoring electrical contacts for an overhead trolley line may include a wear sensor arranged such that an electrical contact on a vehicle or work machine for contacting the overhead trolley line is continually or periodically in its line of sight. The wear sensor may be configured to capture spatial data defining the surface profile of the electrical contact. The system may also include a data processing module configured to receive the spatial data and identify a defect in the electrical contact based on the spatial data.

A test device includes a power compensation module and a test module. The power compensation module receives AC power generated by a device under test to generate DC power to the device under test. The test module provides a plurality of test signals and a test mode to the device under test for testing the device under test.

Disclosed are a sensor mounting apparatus and associated method, e.g. for use in testing of a vehicle sensor in an anechoic chamber. The apparatus features a sensor mounting device for mounting the sensor and a vehicle part mounting device comprised of first, second and third frames. Each frame is movable in a different direction relative to the sensor and each other frame, e.g. either: adjustable forward and back, left and right, up and down, and/or via roll, yaw and pitch. The outermost third frame further includes an attachment means for holding a vehicle part (e.g. a vehicle fascia/bumper) in place and provision for further adjustment of the part relative to the sensor in use, e.g. via a pivot mounting enabling yaw movement.

A device for current sensing of a power transistor system having a power transistor, a first series circuit which includes a first transistor and a first resistance, the first resistance disposed in a load circuit of the first transistor, a second series circuit which has a second transistor and a second resistance disposed in a load circuit of the second transistor, the first series circuit, the second series circuit and the power transistor situated in parallel with one another, the first resistance connected to the first transistor in an electrically conductive manner when the first transistor is switched on, and the second resistance connected to the second transistor in an electrically conductive manner when the second transistor is switched on, and a gate terminal of the first transistor is connected in an electrically conductive manner to a gate terminal of the power transistor when the power transistor is switched on.

A system and method that provide a means to overcome errors in determining the source of an electromagnetic event due to reflection, absorption and scattering of the electromagnetic field due to metallic parts of the electric equipment.

A diagnostic system for a vehicle electrical system having a first and second diagnostic application is provided. The first diagnostic application commands a high side driver circuit and a low side driver circuit to transition a contactor to an open operational position when a first difference value is greater than a first threshold difference value indicating that at least one of the first and second analog multiplexers is malfunctioning. The second diagnostic application commanding the high side driver circuit and the low side driver circuit to transition the contactor to the open operational position when a second difference value is greater than the first threshold difference value indicating that at least one of the first and second analog multiplexers is malfunctioning.