Abstract: An electronic control device 140 is mounted on an on-vehicle control system 10 that performs travel control of an automobile, and is communicatively connected to a plurality of control devices including a first control device (electronic control device 120) and a second control device (electronic control device 130). The electronic control device 140 includes an attack determination unit 145 that determines presence or absence of a security attack in each control device, and a redundant system execution determination unit 146 that determines whether to cause the second control device to execute a redundant function similar to or a part of the function performed by the first control device based on the result of determination by the attack determination unit 145.

Abstract: An electrostatic chuck device containing a substrate, a stack stacked on an upper surface of the substrate in the thickness direction, and a ceramic layer stacked on an upper surface of the stack in the thickness direction. A sleeve formed from an insulating material is inserted into a through-hole that penetrates through the substrate and the stack in the thickness direction. The upper surface of the sleeve in the thickness direction has a two-level structure including a first upper surface positioned on the same plane as an upper surface of the substrate in the thickness direction, and a second upper surface positioned above the first upper surface in the thickness direction of the sleeve and disposed proximate to the ceramic layer. In a plan view, an edge portion of the stack is disposed on top of the first upper surface.

Abstract: A buried type measuring instrument has a sensing unit 10A which is formed in part of a case 10 and senses a physical value pertaining to a change of state of a structure. This case 10 accommodates a transducer 11 for converting the physical value sensed by the sensing unit 10A; a transmission circuit unit 12 for outputting a carrier signal modulated by an output of the transducer 11; a drive unit 13 for driving the transducer 11 and the transmission circuit unit 12 with power supply from a battery 15; and a transmission coil 14 for receiving an output of the transmission circuit unit 12 and generating a low frequency magnetic field signal. This case 10 is buried in the structure. Consequently, it is possible to provide a measuring instrument which can adopt a radio communication mode to secure a sufficient cutoff function of the structure and avoid damage to the measuring sensor, allows remote data acquisition, and even has no adverse effect on strength characteristics of the structure.

Abstract: First to third exciting coils are arranged at a reference position. First to third detecting coils are arranged at a measuring subject position distant from the reference position. Voltages induced in the first to third detecting coils are measured when the first exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the second exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the third exciting coil is excited. An azimuth of the measuring subject position from the reference position based on a predetermined calculation by using all nine induced-voltages which are obtained by the first to third detecting coils.

Abstract: First to third exciting coils are arranged at a reference position. First to third detecting coils are arranged at a measuring subject position distant from the reference position. Voltages induced in the first to third detecting coils are measured when the first exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the second exciting coil is excited. Voltages induced in the first to third detecting coils are measured when the third exciting coil is excited. An azimuth of the measuring subject position from the reference position based on a predetermined calculation by using all nine induced-voltages which are obtained by the first to third detecting coils.

Abstract: In an underground information collecting apparatus which comprises a steel rod with an end to be inserted into the ground and which is for collecting on the ground underground information detected by a sensor mounted in the end, a noise receiving coil is provided to the rod in the vicinity of a main receiving coil which receives a magnetic signal transmitted from a transmitting coil through the rod and which produces a receiving signal. An amplitude and phase adjusting circuit adjusts a noise amplitude and a noise phase included in an induced noise signal obtained in the noise receiving coil to produce an adjusted noise signal having an adjusted noise amplitude and an adjusted noise phase. The adjusted noise amplitude and the adjusted noise phase are adjusted to be coincident with a noise amplitude and a noise phase contained in the receiving signal obtained in the main receiving coil, respectively.

Abstract: A method for detecting a leakage position in an impervious sheet, which comprises disposing a first and a second electrode units on an upper side and a lower side of the impervious sheet, respectively, the first electrode unit intersecting with the second electrode unit; short-circuiting all of electrodes in the first electrode unit; selecting a plurality of electrode sets one set after another set in the second electrode unit, each set comprising three electrodes adjacent to each other; supplying an AC voltage from an AC power source across a central one of each electrode set and the short circuited electrodes of the first electrode unit; measuring a potential difference between the other electrodes in the each electrode set to produce a measured voltage signal; and phase-detecting the measured voltage signal with a signal synchronized with the AC voltage from the AC power source to produce a detected signal, a series of the detected signals produced one after another changing in polarity due to a damage exi

Abstract: A well data transmitting system for use in transmission of a data signal representative of a drilling parameter sensed by a sensor in a drill string of a magnetic material at a bottom of the well drilled by the drill string to a surface station mounted on the earth's surface. A carrier wave is modulated by the data signal and is then applied to a transmitting coil wound on the bottom portion of the drill string to generate a magnetic flux signal induced in the drill string material. The magnetic flux signal is picked up as an electric signal at a coil disposed around an exposed end of the drill string on the earth's surface. The electric signal is equivalent to the modulated signal and is demodulated so that the data signal can be obtained on the earth's surface. The obtained data signal is recorded in a recorder and is processed in a data processor for controlling well drilling operation.