Abstract: A wafer probe test system having a probe card with a probe head, a rotary magnet, a magnetic sensor positioned to sense the magnetic field of the rotary magnet and a controller coupled to the probe card, where the probe head has probe needles to engage features of test sites of a wafer in a wafer plane of orthogonal first and second directions, and the rotary magnet is rotatable around an axis of a third direction to provide a magnetic field to the wafer, in which the controller includes a model of magnetic flux density in the first, second and third directions at the respective test sites of the wafer as a function of a rotational angle of the rotary magnet, a probe needle height along the third direction and a measured magnetic flux density of the magnetic sensor.

Abstract: Methods, apparatuses and systems are described for determining respiration through impedance measurements using only two electrodes. A drive signal may be applied to a person, using only two electrodes. Using the same electrodes, the fluctuations in the voltage of the drive signal are determined. The voltage fluctuations in the drive signal are the result of impedance variations in the person's thoracic cavity due to respiration. Therefore, the voltage fluctuations may be used to determine a respiration rate of the person. In doing so, the voltage fluctuations may be digitized using a sampling rate that is much less than the frequency of the applied drive signal.

Abstract: A garment may be used for detecting an impact. The garment may include a capacitive compression sensor attached to the garment having an inner and outer layer of conductive material as well as a compressible non-conductive material between the inner and outer layers. The outer layer of conductive material may include an electrical isolation region. The garment may further include an impact detection device electrically connected to the capacitive compression sensor via a conductor that traverses the electrical isolation region. The impact detection device may include a processing circuit configured to process a change in a capacitance of the capacitive compression sensor into a digital format representative of the impact. The outer layer of conductive material may enclose the inner layer of conductive material.

Abstract: A sensing system is disclosed that uses at least one conductive plate and associated electronic circuitry to provide an output that is indicative of an object's position in relation to the at least one conductive plate. The sensing system is provided with a high impedance drive signal that varies as a result of the location of an object relative to the at least one conductive plate. The electronic circuitry receives a high impedance drive signal value as an input and a processor uses the value to calculate a digital output indicative of the object's position. The high impedance drive signal value is monitored over time enabling the objects position, displacement, pressure, movement, impact and energy to be determined. This data is output to a display and may also be transmitted to a person located remotely from the object being monitored.

Abstract: A sensing system is disclosed that uses at least one conductive plate and associated electronic circuitry to provide an output that is indicative of an object's position in relation to the at least one conductive plate. The sensing system is provided with a high impedance drive signal that varies as a result of the location of an object relative to the at least one conductive plate. The electronic circuitry receives a high impedance drive signal value as an input and a processor uses the value to calculate a digital output indicative of the object's position. The high impedance drive signal value is monitored over time enabling the objects position, displacement, pressure, movement, impact and energy to be determined. This data is output to a display and may also be transmitted to a person located remotely from the object being monitored.

Abstract: A device, method of manufacture, and garment for detecting an impact is provided. In one embodiment, the garment comprises a capacitive compression sensor attached to the garment having an inner and outer layer of conductive material as well as a compressible non-conductive material between the inner and outer layers. The outer layer of conductive material may include an electrical isolation region. The garment may further include an impact detection device electrically connected to the capacitive compression sensor via a conductor that traverses the electrical isolation region; and wherein the impact detection device comprises a processing circuit configured to process a change in a capacitance of the capacitive compression sensor into a digital format representative of the impact. The outer layer of conductive material may enclose the inner layer of conductive material.

Abstract: An impact detection system provides a means of sensing, monitoring and recording impact events on an impact surface using at least one sensor that is incorporated into the impact surface. The sensor(s) can be integral with, attached to or located behind various types of impact surface including various types of garments that can be worn by an individual or on composite materials such as an aircraft fuselage for example. The impact detection system includes a portable impact detection device electrically connected to the sensor(s) and is used to detect ballistic or non-ballistic type impacts on the impact surface. The portable impact detection device processes the impact data detected by the sensor(s) and stores the data for analysis at a later time or outputs the data to a third party system for review and/or analysis.

Abstract: A sensing system is disclosed that uses at least one conductive plate and associated electronic circuitry to provide an output that is indicative of an object's position in relation to the at least one conductive plate. The sensing system is provided with a high impedance drive signal that varies as a result of the location of an object relative to the at least one conductive plate. The electronic circuitry receives a high impedance drive signal value as an input and a processor uses the value to calculate a digital output indicative of the object's position. The high impedance drive signal value is monitored over time enabling the objects position, displacement, pressure, movement, impact and energy to be determined. This data is output to a display and may also be transmitted to a person located remotely from the object being monitored.

Abstract: The bio mechanical sensor system is disclosed that uses conductive fabric sensors to detect, monitor and record one or more physiological parameters of a person wearing a garment that incorporates the fabric sensors such as a body harness or strap for example, that is attached to a person. The physiological parameters that can be detected include a wearer's heart rate and respiration rate plus ambient temperature and body temperature for example. The garment has a monitoring device that is attached to the garment and used to receive the detected physiological data. A processing circuit within the monitoring device then processes the data and outputs the person's physiological data to a display device in a format characteristic of the person's heart rate and respiratory rate and/or outputs the data to a third party system for review and analysis.

Abstract: A garment comprising at least one electrocardiogram sensor integrated into the garment, the electrocardiogram sensor comprising an electrode on the inside of the garment and arranged to contact a user's skin, and a resilient compressible filler provided between the garment and the electrode such that in use the electrode is held substantially in place against the user's skin when the garment moves relative to the user's skin.