171results about How to "Accurate and reliable measurement" patented technology

A foot measuring or sizing device comprising a base platform, a heel support (28), an alignment fin (6) and a measurement scale (16). The heel support is pivotally connected to the base platform and the foot fin being slidably along an elongate slot formed in the base platform to facilitate alignment of the foot to be measured with a central axis or plane of the foot measuring or sizing device prior to determining a length, measuring a width and / or determining the amount of lift or adjustment of the foot to be measured is necessary to properly support a foot while using footwear.

The present invention utilizes multiple A / D (analog-to-digital) paths and cross-path calibration to provide accurate and reliable measurements for each input channel in a data acquisition system. When the system and method are applied, user and automated methods of selecting among a number of alternative input range settings can be reduced, or even eliminated. That is, there is a significant reduction or complete elimination of input range settings in a measurement system. For each measurement channel of interest, the input signal is directed to at least two paths, e.g., Path A and Path B. The first path measures the full range (e.g., + / −10 volts), while the second path includes a high-gain amplifier. Each path includes an analog-to-digital converter (ADC), so that there is a one-to-one correspondence between the number of paths and the number of ADCs, which sample the input signal simultaneously.

Aspects of this invention include a downhole tool having an angular position sensor disposed to measure the relative angular position between first and second members disposed to rotate about a common axis. A plurality of magnetic field sensors are deployed about the second member and disposed to measure magnetic flux emanating from first and second magnets deployed on the first member. A controller is programmed to determine the relative angular position based on magnetic measurements made by the magnetic field sensors. In a one exemplary embodiment, a downhole steering tool includes first and second magnets circumferentially spaced on the shaft and a plurality of magnetic field sensors deployed about the housing.

The invention relates to an article of clothing (10; 40) for detecting a breathing movement of a living being, wherein the clothing article can be pulled over the thorax of the living being, and has an electrical conductor (12) which can be integrated into the clothing article (10; 40) at the height of the thorax of the living being. Said conductor (12) is attached to the clothing article in sucha manner as to modify an electrically measurable characteristic (L; R) according to the thorax breathing movement. The clothing article also has a holder (14) for fastening evaluation electronics (16) which can be integrated into the article of clothing (10; 40), can be coupled to the electrical conductor (12), and which are designed in such a manner as to detect the electrically measurable characteristic (L; R), and which also have an interface to save or transmit data derived from the electrically measurable characteristic.

An inspection system for inspecting an interior surface of a pipeline has a frame adapted to travel in the pipeline and an imaging means for imaging a selected portion of the interior surface of the pipeline. The imaging means has a field of view and is mounted in a rotatable manner on the frame. The inspection system has with a two-dimensional pattern generator for generating a two-dimensional pattern projection. The generator is mounted with the imaging means to project the two-dimensional pattern projection in the field of view thereof. The imaging means provide images of the selected portion of the internal surface comprising the two-dimensional pattern projection for monitoring a perpendicularity of the optical axis of the imaging means with respect to the selected portion of the interior surface of the pipeline thanks to a shape of the two-dimensional pattern projection prior to inspection of the internal surface.

The invention relates to a weighing controlling device and a method of an electronic belt scale. The weighing controlling device comprises four weighing sensors, a suspended weighing loader, a displacement sensor and an accumulator, wherein the outputs of the weighing sensors enter the accumulator respectively; and the accumulator calculates the combination of three kinds of different programs of the outputs of the four weighing sensors and carries out real-time on-line comparison on two groups of accumulation values. If the difference of the two groups of accumulation values is overlarge, the outputs of the weighing sensors in each group are compared to judge whether certain weighing sensor has a fault, the accumulator shows the accumulation value of the group of weighing sensors with normal outputs so as to ensure that even certain weighing sensor has the fault, the electronic belt scale can still reliably weigh. The device and the method improve the reliability and measurement accuracy of the belt scale, are suitable for on-line, accurate and reliable weighing measurement of a belt type conveyor to continuously convey materials. The device has the advantages of compact and reasonable structure, high reliability, precise measurement, easy maintenance, long service life and wide practicability.