Abstract: A method for determining a health indication of a mechanical component includes: receiving, by a processor of a multi-sensor node device having a plurality of sensors, a configuration defining activation of the plurality of sensors based on a type of mechanical component to which the multi-sensor node device is coupled and based on a level of energy harvesting available at the multi-sensor node device; determining to activate a first sensor based on the received configuration; collecting data from the first sensor relating to a first parameter of the mechanical component; determining to activate a second sensor based on determining that the data collected from the first sensor indicates a threshold is exceeded; collecting data from the second sensor relating to a second parameter of the mechanical component; determining an initial health indication of the mechanical component; and transmitting the determined initial health indication to a remote computing system.

Abstract: A method, comprises: receiving measured air pressure data from each air data probe on a vehicle; receiving a first set of data from at least one sensor system on the vehicle; determining predicted noise levels for each air data probe using a noise modelling system and the received first set of data; determining a transmission loss for each air data probe; determining if any air data probe is faulty by determining if an transmission loss of any of the air data probes is greater than a first threshold value, where an air data probe is deemed faulty if its transmission loss is greater than the first threshold value; and if the transmission loss of any of the air data probes is greater than the first threshold value, then generating a signal to indicated that at least one air data probe is faulty.

Abstract: A method, comprises: receiving measured air pressure data from each air data probe on a vehicle; receiving a first set of data from at least one sensor system on the vehicle; determining predicted noise levels for each air data probe using a noise modelling system and the received first set of data; determining a transmission loss for each air data probe; determining if any air data probe is faulty by determining if an transmission loss of any of the air data probes is greater than a first threshold value, where an air data probe is deemed faulty if its transmission loss is greater than the first threshold value; and if the transmission loss of any of the air data probes is greater than the first threshold value, then generating a signal to indicated that at least one air data probe is faulty.

Abstract: Core-less current sensor comprises two parallel conductors carrying equal currents in the same direction. The magnetic field in mid location of the two parallel conductors carrying equal currents in the same direction for all current magnitudes is zero in absence of an external magnetic interference. Sum of magnetic fields in two points equidistant from the mid location on both the sides is zero as magnetic fields at these points are equal in magnitude and opposite in polarity for all current magnitudes and for equal amount of currents flowing through both conductors in same direction in absence of an external magnetic interference. Two sensing elements can be arranged between the two parallel conductors for sensing the magnetic field due to currents flowing through them for the purpose of current measurement. Sensor output is the difference between two outputs measured by the sensing elements. Outputs of sensing elements can vary due to external interference.

Abstract: A magnetic pattern detection system (200) includes a housing (201), and a magnetic detector (100) including at least one magneto resistive (MR) sensor array (144) having an easy axis within the housing. A magnetic field source (151, 152) is within the housing (201), wherein the magnetic field source is operable when turned on to provide a magnetic field to line up random magnetic domains along the easy axis of the MR array (144). An amplifier (170) within the housing (201) is coupled to an output of the MR sensor array (144).

Abstract: An apparatus and method for measuring the position of a member. The apparatus has a sonic waveguide, a generator for generating an interrogation sonic wave at a first position in the sonic wave guide, and a transducer for converting the interrogation sonic wave, at a second position in the sonic wave guide, to an interrogation signal. A timer can be enabled in response to the generator generating the interrogation sonic wave and stopped in response to the transducer converting the interrogation sonic wave so as to determine the propagation time delay of the interrogation sonic wave and the distance between the first and second positions. When the transducer is attached to a member, the position of the member can be determined from this distance. The apparatus can include a transmitter for transmitting the interrogation signal. The generator can be configured to generate an excitation sonic wave which is converted by the transducer to a power signal for powering the transmitter.

Abstract: A relaxation time constant associated with a fluid can be determined and then compared with a stored reference value. The difference between the relaxation time constant and the stored reference value can then be calculated in order to provide qualitative and/or quantitative data indicative of an adulteration of the fluid. The relaxation time constant associated with the fluid can be determined by first generating a static charge and then injecting the static charge into the fluid. The charge can then be collected from the fluid and utilized to determine the relaxation time constant.

Abstract: Core-less current sensor comprises two parallel conductors carrying equal currents in the same direction. The magnetic field in mid location of the two parallel conductors carrying equal currents in the same direction for all current magnitudes is zero in absence of an external magnetic interference. Sum of magnetic fields in two points equidistant from the mid location on both the sides is zero as magnetic fields at these points are equal in magnitude and opposite in polarity for all current magnitudes and for equal amount of currents flowing through both conductors in same direction in absence of an external magnetic interference. Two sensing elements can be arranged between the two parallel conductors for sensing the magnetic field due to currents flowing through them for the purpose of current measurement. Sensor output is the difference between two outputs measured by the sensing elements. Outputs of sensing elements can vary due to external interference.

Abstract: Sensor components deployed in a container and acting as resistors or capacitors are used to determine liquid level independent of liquid quality. Displacement current can also be considered as the conduction current to accurately measure liquid quality and level. As the level of liquid increases, the displacement current and conduction current increases, which in turn causes a large change in output for a small change in liquid level. The change in displacement and conduction current values due to contamination of the liquid can be taken in to account with the help of auxiliary electrodes. The contaminated liquid level can be measured very accurately by current flowing through primary electrodes along with the use of auxiliary electrodes for auxiliary measurement, resulting in enhanced sensor system sensitivity and accuracy. System liquid level accuracy is independent of liquid quality and measures liquid quality accurately with resistance, displacement current, conduction current and capacitive measurement.

Abstract: An apparatus and method for measuring the position of a member. The apparatus has a sonic waveguide, a generator for generating an interrogation sonic wave at a first position in the sonic wave guide, and a transducer for converting the interrogation sonic wave, at a second position in the sonic wave guide, to an interrogation signal. A timer can be enabled in response to the generator generating the interrogation sonic wave and stopped in response to the transducer converting the interrogation sonic wave so as to determine the propagation time delay of the interrogation sonic wave and the distance between the first and second positions. When the transducer is attached to a member, the position of the member can be determined from this distance. The apparatus can include a transmitter for transmitting the interrogation signal. The generator can be configured to generate an excitation sonic wave which is converted by the transducer to a power signal for powering the transmitter.

Abstract: A relaxation time constant associated with a fluid can be determined and then compared with a stored reference value. The difference between the relaxation time constant and the stored reference value can then be calculated in order to provide qualitative and/or quantitative data indicative of an adulteration of the fluid. The relaxation time constant associated with the fluid can be determined by first generating a static charge and then injecting the static charge into the fluid. The charge can then be collected from the fluid and utilized to determine the relaxation time constant.