A system for monitoring electrostatic charge buildup and electrostatic discharge (ESD) remotely comprises a plurality of electrostatic charge measurement units and a data acquisition device. Each electrostatic charge measurement unit includes a primary charge plate, a static sensor device, a secondary charge plate, and a shielded cable. The primary charge plate is positioned proximal to an object. The static sensor device includes an input sensor at which an electric voltage is measured and outputs an electronic signal whose level varies according to the measured electric voltage. The secondary charge plate is positioned in proximity to the input sensor of the static sensor device. The shielded cable includes an inner conductor electrically connected to the primary charge plate and the secondary charge plate and an outer conductor electrically connected to electrical ground. The data acquisition device receives the electronic signal from the static sensor device of each electrostatic charge measurement unit.

Two approaches for on-chip ESD detection include variable dielectric width capacitor, and vertical metal-oxide-semiconductor (MOS) capacitor MOSCAP array. The variable dielectric width capacitor approach employs metal plates terminated with sharp corners to enhance local electric field and facilitate ready breakdown of a thin dielectric between the metal plates. The vertical MOSCAP array is composed of a capacitor array connected in series. Both approaches are incorporated in an example 22 nm fully depleted silicon-on-insulator. Vertical MOSCAP arrays detect ESD events starting from about 6 V with about 6 V granularity, while the variable dielectric width capacitor is suitable for detection of high ESD voltage from about 40 V and above.

A detection apparatus is for detecting interference on signal paths in a differential voltage measuring system with a signal measuring circuit for measuring bioelectric signals with a number of useful signal paths having at least one shield. In an embodiment, the detection apparatus includes at least one analysis unit, connected to the shield and embodied to detect interference in a useful signal path of the voltage measuring system via a signal measured at the shield in the case of interference.

A device includes an EMC (electromagnetic compatibility) filter, a frequency converter coupled to the EMC filter, and a motor coupled to the frequency converter via a motor cable. A leakage current compensator includes a leakage current detector and a compensation current generator configured to generate a compensation current that is directed against the leakage current and is overlaid on the leakage current in such a way that the leakage current is reduced.

A method of computer simulation is for evaluating the immunity characteristics of a device-under-test by use of a transmission line model that models a transmission line connected to the device-under-test. The method includes a characteristic change node at which parameters representing the transmission characteristics of the transmission line change midway.

Systems and methods of testing cables are provided. An exemplary testing system for testing radio frequency (RF) cables in a telecommunication system including a cable under test includes a termination element configured to be coupled to a distal end of the cable under test; and a controller in communication with the termination element, wherein the controller switches the termination element between two or more termination states selected from the group consisting of an open termination state, a short termination state, a load termination state, and a through state.

A testing apparatus for electromagnetically sensitive equipment includes a housing defining a testing chamber. The housing blocks transmission of electromagnetic waves from an external environment into the testing chamber and reduces reflection of electromagnetic waves within the testing chamber. The testing apparatus also includes a tube defining an air flow path between the testing chamber and the external environment. The tube blocks transmission of electromagnetic waves from the external environment into the air flow path. The tube includes a proximal end coupled to an opening in the housing such that the air flow path is fluidly coupled to the testing chamber via the opening, a distal end opposing the proximal end, and a bent segment extending between the proximal end and the distal end.

A pipeline AC mitigation SSD Marker Station has a shape and land surface area footprint that are similar to conventional pipeline location markers or corrosion test stations. The SSD Marker Station includes an SSD device that connects an underground metallic pipeline to an underground grounding conductor. The SSD Marker Station further includes a disconnect switch configured to disconnect the SSD device from the pipeline and/or grounding conductor. Also included is a pair of testing ports that are in electrical communication with the SSD device. Testing of the SSD device thereby requires only operating the disconnect switch to isolate the SSD device from the pipeline and/or grounding connector and performing an electrical measurement across the testing ports. In embodiments, the SSD Marker Station meets all requirements applicable to a pipeline location marker, and can be installed in lieu of a pipeline location marker.

An electromagnetic immunity test system includes a data acquisition and control device, a linear module, an electromagnetic disturbance simulator, and an upper computer. The data acquisition and control device is in a data connection to the linear module, the electromagnetic disturbance simulator, and the upper computer. The linear module includes a grating ruler; and the linear module is disposed on the numerical control machine tool to measure location data of the sliding table of the numerical control machine tool and transmit the location data to the data acquisition and control device. The electromagnetic disturbance simulator is configured to generate and transmit an electromagnetic signal to the numerical control system. The data acquisition and control device is configured to read the location data in real time and transfer the real-time location data to the upper computer.

An apparatus for electromagnetic wave evaluation may include: an electromagnetic wave non-reflecting outer structure in which electromagnetic wave absorbers are installed on interior walls and an evaluation space is formed therein; a building-simulating structure which is installed in the evaluation space inside the electromagnetic wave non-reflecting outer structure and in which electromagnetic wave absorbers capable of adjusting a quality factor are installed; a transmitting end installed inside or outside the building-simulating structure in the evaluation space and transmitting an electromagnetic wave; and a receiving end installed outside or inside the building-simulating structure in the evaluation space.