A handheld power tool 10 includes a detection signal acquisition unit 31, a determination unit 32, a display unit 24, a display control unit 34, a motor 14, and a drive control unit 13. The detection signal acquisition unit 31 acquires a detection signal that changes according to the detection strength of rebar W1 in concrete W. The determination unit 32 determines the presence or absence of the rebar W1 based on the acquisition result acquired by the detection signal acquisition unit 31. The display unit 24 displays the presence or absence of the rebar W1 by turning on different lights. The display control unit 34 controls so as to switch the color of the light displayed on the display unit 24 on the basis of the determination result by the determination unit 32. The motor 14 rotationally drives a tip tool 18a that works the concrete W. The drive control unit 13 controls the drive of the motor 14.

An improved detector device for locating studs and other objects behind a substrate (such as a wall) uses one or more light emitting diodes (LEDs) in combination with a photochromic compound to mark the locations on the substrate behind which objects are located.

The present invention provides an electrode device, semiconductor device and a semiconductor system capable of accuracy detecting an object to be detected. According to one embodiment, the electrode device 11 is used for detecting the capacitance of the mutual capacitance system, and includes a reception electrode PR1, a transmission electrode PX1 arranged to face the reception electrode PR1, a transmission electrode PX2 arranged to face the reception electrode PR1 with the transmission electrode PX1 interposed therebetween, and a dielectric board 101 provided between the transmission electrode PX1 and the transmission electrode PX2 to fix the distance and the dielectric constant between the transmission electrode PX1 and the transmission electrode PX2.

A solution for evaluating a medium using electrical signals is described. A plurality of electrical signals having different frequencies are transmitted through the medium and signal data corresponding to the electrical signals after having traveled through the medium is acquired. A complex impedance and a complex permittivity and/or complex conductivity can be calculated for the medium. A set of characteristics of the medium can be computed using mixing models and/or known information of the medium. A level of one or more attributes of the medium can be determined from the characteristics using nonparametric Bayesian inference. One particular application is directed to determining a nitrate level of soil.

The present disclosure relates to a method for determining the occupancy status of a seat of a motor vehicle, the method being implemented by a determination system comprising a seat, six interdigitated capacitive sensors, and a controller comprising a reference capacitance value and a threshold value for each interdigitated capacitive sensor, the method comprising a step of measuring three capacitance values for each interdigitated capacitive sensor, the following steps being implemented by the controller for the measured capacitance values: calculating a resulting capacitance value based on the measured capacitance values, calculating the difference between the resulting capacitance value and the reference capacitance value, comparing the calculated difference to the threshold value, determining the occupancy status of the seat, based on the result of the comparison.

A wireless-power transmission system (WPTS) includes sensors, antennas, a power amplifier (PA), and integrated circuits (ICs). The antennas, upon receiving an amplified signal for the PA, are configured to radiate energy within a transmission field (TF) of the WPTS. The ICs are configured to receive sensor data indicating presence of an object within a keep-out zone (KOZ). The ICs are configured to classify using the sensor data the object as a sensitive object. While detecting presence of the sensitive object, the ICs are configured to forgo providing an instruction to the PA to amplify the signal. In accordance with a determination that the sensitive object is no longer detected the ICs are configured to determine whether an electronic device is within the TF and in accordance with a determination that the electronic device is within the TF the ICs are configured to instruct the PA to amplify the signal.

Naturally-occurring, electromagnetic signals generated by interaction of solar wind with earth's magnetosphere adjacent a borehole are measured by an electromagnetic sensor positioned adjacent the borehole in the hydrocarbon-bearing formation. Electromagnetic signals generated within the borehole are measured over a period of time by a borehole sensor positioned within the borehole. The electromagnetic signals change over the period of time due to variations in fluid distributions within the hydrocarbon-bearing formation. Electromagnetic changes to the electromagnetic signals generated within the borehole and to the passive, naturally-occurring electromagnetic signals over the period of time are determined by one or more processors. A computational model of the hydrocarbon-bearing formation is generated based in part on the electromagnetic changes.

A monitoring system monitors a presence or condition of a particular fluid in a device for storing or conducting the fluid using permittivity properties of the fluid. The system includes: the device for storing or conducting the fluid; a detector component being an integral part of the device and having a component body and a passive antenna deposited on a surface of the component body; and a reader device having a reader antenna. The reader device emits an electromagnetic output signal with a predefined output power and over a predefined frequency range via the reader antenna to the passive antenna and measures a reflected signal over the predefined frequency range, which is reflected from the passive antenna. The reader device also compares the reflected signal with at least one reference signal of at least one reference fluid to determine the presence or the condition of the particular fluid.

A vehicle assembly includes a sensor system of a bumper or a skid plate. The sensor system includes a plurality of first sensors and at least one second sensor. The sensor system emits a first electrical field from each of the first sensors when the plurality of first sensors are active and the at least one second sensor is inactive. The sensor system emits a second electrical field when the plurality of first sensors are active and the at least one second sensor is active. The first electrical field projects a first distance from the skid plate. The second electrical field projects a longer, second distance from the skid plate.

An appliance includes: at least one measurement electrode, for detecting at least one object in a detection zone, by detecting a signal with respect to a coupling capacitance between the object and said the at least one measurement electrode; at least one capacitive detection electronics, connected to the at least one measurement electrode, and an electric line, having at least one electric wire, in the detection zone;
the appliance also including a signal conditioner, applying to at least a portion of the electric line, an alternating electrical potential (V.sub.G), called guard potential, identical to the detection potential at the detection frequency. The appliance can be a robot, in particular a robotized arm, equipped with an electric line providing a power supply to a component part of the robot.