A thickness measuring device of the present invention includes a supporter which supports a specimen, an emission unit which emits an electromagnetic wave in a direction toward the specimen, a chamber which surrounds the specimen, a receiving unit which receives an electromagnetic wave output in a direction in which the chamber is positioned, and a control unit which receives a signal from the receiving unit and calculates a thickness of the specimen. At least a part of the chamber transmits a part of the electromagnetic wave and reflects the remaining part of the electromagnetic wave. The receiving unit receives a first electromagnetic wave having a first peak and a second electromagnetic wave having a second peak. The first peak occurs at a first time point, the second peak occurs at a second time point, and a difference between the first time point and the second time point is a first period or more.

An indicating device, in particular a pressure gauge, including: a basic housing including a mechanism for driving a rotating needle indicator, movable relative to a dial, an interface housing attached to the basic housing, at least one rotary screen carried by the interface housing, for locating an operating area, of which the angular position can be adjusted about the axis of the needle, a protective cover removable attached to the interface housing and making it possible, when removed, to adjust the position of the rotary screen without separating the interface housing from the basic housing.

An indicating device, in particular a pressure gauge, including: a basic housing including a mechanism for driving a rotating needle indicator, movable relative to a dial, an interface housing attached to the basic housing, at least one rotary screen carried by the interface housing, for locating an operating area, of which the angular position can be adjusted about the axis of the needle, a protective cover removable attached to the interface housing and making it possible, when removed, to adjust the position of the rotary screen without separating the interface housing from the basic housing.

Disclosed is a camshaft or crankshaft sensor including a toothed target, a measuring cell adapted to supply a raw signal and a processor module having two modes of operation: 1) a measurement mode in which the processor module is adapted to supply an output port of the sensor a measurement signal representing the times of passage of the teeth of the target at the level of the measuring cell; and 2) a diagnostic mode in which the processor module is adapted to supply at the output port of the sensor a diagnostic signal different from the measurement signal and representing the amplitude of the raw signal. Also disclosed is a method and a module for diagnosing such a sensor.

A vehicle detection method includes using a first sensor and a second sensor coupled to a structure to detect vibrations generated by one or more vehicles that have passed over the structure. Based on the vibrations detected by the first sensor, a first plurality of peaks are extracted, and based on the vibrations detected by the second sensor, a second plurality of peaks are extracted. Each of the first plurality of peaks and the second plurality of peaks corresponds to an axle of the one or more vehicles. The first plurality of peaks and the second plurality of peaks are then computed to determine a number of vehicles that have passed over the structure.

A vehicle detection method includes using a first sensor and a second sensor coupled to a structure to detect vibrations generated by one or more vehicles that have passed over the structure. Based on the vibrations detected by the first sensor, a first plurality of peaks are extracted, and based on the vibrations detected by the second sensor, a second plurality of peaks are extracted. Each of the first plurality of peaks and the second plurality of peaks corresponds to an axle of the one or more vehicles. The first plurality of peaks and the second plurality of peaks are then computed to determine a number of vehicles that have passed over the structure.

A signal processing method includes a processing target signal generation step of generating a processing target signal which is a time-series signal based on a source signal which is a time-series signal output from an object, and a vibration rectification error calculation step of calculating a plurality of vibration rectification errors by performing product-sum operation processing of a first signal based on the processing target signal and a second signal based on a phase-shifted signal of the processing target signal a plurality of times by changing a shift amount.

A method for offset calibration of a rotation rate sensor signal of a rotation rate sensor. In a first step, an ascertainment is made that the rotation rate sensor is in an idle state. In a second step, after the first step, a filter parameter is determined as a function of the measured rotation rate sensor values, measured in the idle state, of the rotation rate sensor. In a third step, after the second step, a filtered measured rotation rate sensor value is determined with the aid of the filter parameter. An offset is determined with the aid of the filtered measured rotation rate sensor value.

A method for offset calibration of a rotation rate sensor signal of a rotation rate sensor. In a first step, an ascertainment is made that the rotation rate sensor is in an idle state. In a second step, after the first step, a filter parameter is determined as a function of the measured rotation rate sensor values, measured in the idle state, of the rotation rate sensor. In a third step, after the second step, a filtered measured rotation rate sensor value is determined with the aid of the filter parameter. An offset is determined with the aid of the filtered measured rotation rate sensor value.

A device for contactlessly determining a position of a pedal in a vehicle, having at least a magnet and a sensor, wherein the magnet produces a magnetic field that varies with the position of the pedal and detected by the sensor. The sensor has an output for providing at least one sensor signal. A first and a second position range are defined, wherein each position range includes positions of the magnet with respect to the sensor. The processor generates an output signal from the at least one sensor signal. The output signal takes on values that are unambiguously associated with a position of the magnet relative to the sensor in the first position range, and takes on a constant value that is independent of the position of the magnet relative to the sensor in the second position range.