Systems and methods for battery testing including a holder system. The holder system is designed to couple one or more transducers to a battery under test, wherein the one or more transducers are configured for electrochemical-acoustic signal interrogation (EASI) of the battery. The holder system includes at least one arm to house at least one transducer to be coupled to the battery, and a pressure applying device to apply pressure to the at least one transducer, and to control pressure between the at least one transducer and the battery. The holder system is also configured to determine the pressure between the at least one transducer and the battery and adjust the pressure applied to the at least one transducer based on the determined pressure.

An object perspective monitor comprises an electric field sensing nodule, a signal processing module, a battery module, an analog digital conversion module, a human-machine interface analysis module and a radio transmission module. The electric field sensing module is electrically connected to the signal processing module to form a loop. The electric field sensing module which receives electric field intensity changes to generate electric signals, can be an antenna of capacitor medium, convenient for changing the detection space.

A fluid sensor including a sensing area configured to receive a fluid. The fluid sensor includes a transducer and a capacitive sensor. The transducer is configured to output an ultrasonic wave through the fluid. The capacitive sensor includes a capacitive plate configured to reflect the ultrasonic wave toward the transducer.

A MEMS gas sensor is disclosed. In an embodiment a MEMS gas sensor includes a carrier having a recess, a gas sensitive element arranged in the recess and a shielding layer at least partially covering the recess.

Embodiments generally relate to personal protective equipment (PPE) (such as gloves, shoes/boots, hoods, protective clothing, etc.) for industrial applications. More specifically, the invention relates to using magnetic particles (e.g. incorporated within or attached/affixed to the PPE) so that a magnetic scan may be run to determine a change (e.g. decrease) in initial magnetic field signature (MFS) for the PPE). The change in MFS is used to determine end of service life of the PPE (such that the protective equipment should be retired or repaired).

Systems and methods for battery testing including a holder system. The holder system is designed to couple one or more transducers to a battery under test, wherein the one or more transducers are configured for electrochemical-acoustic signal interrogation (EASI) of the battery. The holder system includes at least one arm to house at least one transducer to be coupled to the battery, and a pressure applying device to apply pressure to the at least one transducer, and to control pressure between the at least one transducer and the battery. The holder system is also configured to determine the pressure between the at least one transducer and the battery and adjust the pressure applied to the at least one transducer based on the determined pressure.

A SAW (Surface Acoustic Wave) magnetic sensor includes: a piezoelectric thin film; a seed layer; an interdigital transducer arranged respectively on each side of the piezoelectric thin film, the interdigital transducer comprising an interdigital electrode made from magnetic materials, and reflector grids located at both ends of the interdigital electrode; an underlying substrate arranged at the seed layer opposite to the piezoelectric thin film. A manufacturing method for the sensor is also disclosed.

A fluid sensor including a sensing area configured to receive a fluid. The fluid sensor includes a transducer and a capacitive sensor. The transducer is configured to output an ultrasonic wave through the fluid. The capacitive sensor includes a capacitive plate configured to reflect the ultrasonic wave toward the transducer.

Magneto-Mechanical Resonator Sensor with Mass Distribution Channel Some aspects of the present disclosure feature a sensing device (e.g. for temperature, moisture or detection of substances) comprising a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The spacer is disposed between the magnetic bias layer and the resonator. At least one of the resonator surfaces has a predefined channel. The environmental change receptor is disposed proximate to the predefined channel. In response to a change in environment, the environmental change receptor distributes along a part of the channel.

A fluid sensor including a sensing area configured to receive a fluid. The fluid sensor includes a transducer and a capacitive sensor. The transducer is configured to output an ultrasonic wave through the fluid. The capacitive sensor includes a capacitive plate configured to reflect the ultrasonic wave toward the transducer.