Abstract: A method employs an unmanned aerial vehicle to carry an electromagnetic field measurement system to overcome environmental obstacles in measuring environmental electromagnetic field. The electromagnetic field measurement system senses the electromagnetic field of a spatial position in the environment to generate a sensing signal, then processes the sensing signal to remove the high-frequency electromagnetic interference generated by the operation of the unmanned aerial vehicle itself from the sensing signal, and converts the processed sensing signal into a digital signal. The digital signal is processed to extract at least one wave according to a fundamental frequency and a harmonic order, thereby removing the low-frequency electromagnetic interference from the digital signal. The extracted wave is employed in calculating an environmental electromagnetic field value of the spatial location.

Abstract: A method employs an unmanned aerial vehicle to carry an electromagnetic field measurement system to overcome environmental obstacles in measuring environmental electromagnetic field. The electromagnetic field measurement system senses the electromagnetic field of a spatial position in the environment to generate a sensing signal, then processes the sensing signal to remove the high-frequency electromagnetic interference generated by the operation of the unmanned aerial vehicle itself from the sensing signal, and converts the processed sensing signal into a digital signal. The digital signal is processed to extract at least one wave according to a fundamental frequency and a harmonic order, thereby removing the low-frequency electromagnetic interference from the digital signal. The extracted wave is employed in calculating an environmental electromagnetic field value of the spatial location.

Abstract: A system for positioning based on magnetic field characteristics includes a system apparatus and a client device. The system apparatus includes a characteristic magnetic field generation device, a magnetic field characteristic database and a processing device. The characteristic magnetic field generation device is used for generating a plurality of characteristic magnetic fields in a predetermined space. The characteristic magnetic fields have at least two magnetic field characteristics. The magnetic field, characteristic database has a plurality of characteristic values and a plurality of positioning values. Each of the characteristic values corresponds to each of the magnetic field characteristics. The characteristic values correspond to the magnetic field characteristics. The client device includes a magnet detecting component and a processor. The magnet detecting component is used for detecting the magnetic field characteristics and for outputting a magnetic field signal.

Abstract: A method and apparatus for current measurement using Hall sensors without iron cores, used to estimate a flowing current in an electric conducting cable are provided by the exemplary examples of the present invention. The method for current measurement using Hall sensors without iron cores includes the following step: (a) providing Hall sensors to be attached to or located near the electric conducting cable; (b) using each of the Hall sensors to measure the flux density of the magnetic field generated by the flowing current, so as to generate an output voltage according to the flux density of the magnetic field; (c) performing a statistical operation on the output voltages of the Hall sensors, so as to generate a statistical voltage; (d) estimating the flowing current in the electric conducting cable according to the statistical voltage.

Abstract: A method and apparatus for current measurement using Hall sensors without iron cores, used to estimate a flowing current in an electric conducting cable are provided by the exemplary examples of the present invention. The method for current measurement using Hall sensors without iron cores includes the following step: (a) providing Hall sensors to be attached to or located near the electric conducting cable; (b) using each of the Hall sensors to measure the flux density of the magnetic field generated by the flowing current, so as to generate an output voltage according to the flux density of the magnetic field; (c) performing a statistical operation on the output voltages of the Hall sensors, so as to generate a statistical voltage; (d) estimating the flowing current in the electric conducting cable according to the statistical voltage.

Abstract: The present invention relates to the use of silicone anchorage additives in curable silicone coatings. The silicone anchorage additive of the invention is an alkoxy containing alkenyl functional organopolysiloxane, and these additives can be used in silicone coatings to provide superior anchorage while maintaining fast cure rates especially on films.

Abstract: This invention discloses curable silicon compositions which impart beneficial characteristics to the fibers that are not possible without the use of the instant invention compositions and process.