A measurement unit module includes a printed circuit board (PCB) and electronic components being mounted on a front face of the PCB, a plurality of measurement unit modules are arranged at intervals in an extending direction of a stripped flat cable, the stripped flat cable is electrically connected to back faces of the plurality of PCBs in sequence to form a measurement unit cluster, the measurement unit cluster is packaged and molded by an extrusion technology of silica gel to form the flexible sensing strip, and the flexible sensing strip can be wound into a sensing strip reel. The packaging structure has the beneficial effects that connection integrity between the measurement unit modules is enhanced, connection strength is improved, and reliability of a flexible clinometer is improved. The flexible sensing strip can be wound into the sensing strip reel so as to be convenient to carry and convey.

A fall protection compliance system includes a connection structure configured for interfacing an anchor structure and a connection sensor associated with the connection structure. The connection sensor includes an accelerometer or a pressure switch, where the connection sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal indicating said continued connection.

A fall protection compliance system includes a connection structure configured for interfacing an anchor structure and a connection sensor associated with the connection structure. The connection sensor includes an accelerometer or a pressure switch, where the connection sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal indicating said continued connection.

A sensor including a sensor element for acquiring a measuring signal, the measuring signal including at least one useful signal component in a useful signal frequency range and at least one interference signal component in an interference signal frequency range, and a readout circuit for converting the measuring signal into an analog electrical sensor signal. A feedback circuit is provided, which feeds back the output signal of the readout circuit to the input of the readout circuit at which the measuring signal is applied, and the total transmission function H(s) of the readout circuit and feedback circuit induces an attenuation of the analog sensor signal in the interference signal frequency range, while the analog sensor signal in the useful signal frequency range is not attenuated.

A sensor including a sensor element for acquiring a measuring signal, the measuring signal including at least one useful signal component in a useful signal frequency range and at least one interference signal component in an interference signal frequency range, and a readout circuit for converting the measuring signal into an analog electrical sensor signal. A feedback circuit is provided, which feeds back the output signal of the readout circuit to the input of the readout circuit at which the measuring signal is applied, and the total transmission function H(s) of the readout circuit and feedback circuit induces an attenuation of the analog sensor signal in the interference signal frequency range, while the analog sensor signal in the useful signal frequency range is not attenuated.

A device for measuring at least one physical quantity includes a direct voltage source and a measuring sensor coupled to the voltage source, which sensor is configured to measure a physical quantity. A current regulator is connected between the direct voltage source and the measuring sensor, and a voltmeter is connected in parallel with the measuring sensor so that a voltage detected by the voltmeter is indicative of the measured quantity.

Described herein is an energy harvesting system comprising a transducer and a processor. The transducer generates an electric signal from ambient energy. The processor is configured to process the electric signal to perform pattern recognition of the electric signal so as to determine and output a characteristic of a source of the ambient energy. The pattern recognition comprises statistical analysis and frequency domain analysis.

Described herein is an energy harvesting system comprising a transducer and a processor. The transducer generates an electric signal from ambient energy. The processor is configured to process the electric signal to perform pattern recognition of the electric signal so as to determine and output a characteristic of a source of the ambient energy. The pattern recognition comprises statistical analysis and frequency domain analysis.

A MicroElectroMechanical Structure (MEMS) accelerometer includes a piezoelectric membrane including at least one electrode and an inertial mass, the piezoelectric membrane being affixed to a holder; and a circuit for evaluating sums and differences of signals associated with the at least one electrode to determine a three-dimensional acceleration direction, wherein the at least one electrode includes a segmented electrode, and wherein the segmented electrode includes four segmentation zones.

A MicroElectroMechanical Structure (MEMS) accelerometer includes a piezoelectric membrane including at least one electrode and an inertial mass, the piezoelectric membrane being affixed to a holder; and a circuit for evaluating sums and differences of signals associated with the at least one electrode to determine a three-dimensional acceleration direction, wherein the at least one electrode includes a segmented electrode, and wherein the segmented electrode includes four segmentation zones.