Provided herein are a measurement device and an operation method thereof. The measurement device senses a distance variation between the measurement device and an object using a built-in proximity sensor and accordingly determines whether to turn on or turn off a track sensing module and an optical ranging module such that the measurement device provides intelligent selection to achieve energy saving without being interfered with by other sensors being turned on.

A measurement system for assisting in guiding an elongated medical device in a body is described. The measurement system comprises a multicore fiber for insertion into an elongated medical device such that a position of the tip of the multicore fiber corresponds with a position near the tip of the elongated medical device, the multicore fiber comprising a plurality of cores, and a measurement device being adapted for determining, based on the optical signals measured from the multicore fiber, a known shape applied to the multicore fiber, and for deriving based thereon, a length of the portion of the multicore fiber that has been introduced in the body or a position of the multicore fiber in the body.

A hand-held OCTG length measuring apparatus has hollow upper and lower bodies, a hand grip extending generally downward from the hollow upper body near the first end and including a source trigger, and a sensor housing extending generally downward from the hollow upper body. The sensor housing encloses a TOF source operatively connected to the source trigger. The hollow lower body shaped to include a frontal cavity positioned generally under the source housing, the frontal cavity having attached thereto a pipe end alignment bracket. The upper hollow body and the lower hollow body connected at a lower end of the hand grip and at a lower end of the sensor housing. The apparatus employs a minimum 40,000 lux laser (at 18 to 25 feet) and a polarized, diamond-grade reflector, to afford reliable, repeatable OCTG length measurements.

The invention relates to a transport device (100), in particular for transporting product carriers in a plant for manufacturing food products. The transport device (100) comprises at least one chain (1) to which measuring marks (4) are attached, an electrical drive system (20) for driving the chain (1) with a servo motor (25) and an absolute encoder (21), a plant control unit (30) and a measuring sensor (11) for detecting the measuring marks (4) with a switching frequency of greater than 2000/s. The plant control unit (30) comprises a first input (34) for receiving measurement data from the measuring sensor (11) and a second input (35) for receiving position data from the position sensor (21) and is designed to receive data from the measuring sensor (11) and from the position sensor (21), to mutually correlate said data correctly with respect to time, to determine therefrom lengths between measurement marks (4), more particularly between two consecutive measurement marks, and to produce a signal which provides information about the quality of the chain. A servo position actual value is ascertained by means of oversampling. (FIG. 2)

A method of measuring objects that are conveyed in a conveying direction comprises the steps that (i) a first object edge of a conveyed object is detected at a first measurement position by means of a first optoelectronic sensor, (ii) the first object edge or a second object edge of the object is detected at a second measurement position, which is spaced apart from the first measurement position in the conveying direction, by means of a second optoelectronic sensor that is spatially resolving at least in the conveying direction, (iii) a time difference between the detection of the first object edge at the first measurement position and the detection of the object edge detected in step (ii) at the second measurement position is determined, (iv) a transit time is determined in which the object edge detected in step (ii) moves through a predetermined measurement path, (v) the object speed is determined based on the transit time and a length of the measurement path, and (vi) the length of the object is determined based on the determined time difference and the determined object speed.

An apparatus for depositing a piece of band-like elastomeric element on a forming support in a process for building a tyre for vehicle wheels. The apparatus operates by feeding a piece of band-like elastomeric element having a predetermined nominal length towards the forming support along a predetermined feeding direction and measuring the actual length of the piece along the feeding direction. If the actual length is lower than or equal to a circumferential length of a deposition surface defined on the forming support, the piece is deposited on the deposition surface while the forming support rotates about a rotation axis thereof. During such deposition the piece is pressed on the deposition surface with a pressing force selected as a function of the actual length.

A power chain elongation inspecting system is provided and includes a power chain that is configured to move in a longitudinal direction and a measuring device that is configured to measure elongation of the power chain. In addition, an electronic tag attaching device is configured to mark failures on the power chain to measure the elongation of the power chain in real time and to track a failure portion of the power chain via a tag attachment.

The invention relates to a method of determining the elongation of segments of a chain during operation, comprising the following steps: Performing a first detection to determine a position of a first chain component and detecting a first measurement value, performing a second detection to determine a position of a second chain component and detecting a second measurement value, and determining the distance L between the first and the second chain component, wherein the first detection and the second detection are performed simultaneously.

The invention relates to a method for setting up two sensor systems for monitoring the state of wear of a chain, which method comprises the steps: first positioning of the first sensor system relative to a calibration object, first positioning of the second sensor system relative to the calibration object, carrying out a first signal detection using the first sensor system, carrying out a first signal detection using the second sensor system, wherein the first signal detection using the first sensor system takes place at the same time as the first signal detection of the second sensor system.

Method and apparatus for measuring a protrusion length of a protrusion portion on each side of sheet after cutting even when there is variation in positions of cords embedded in the sheet, apparatus with imaging unit that images cross-sectional profile in width direction of sheet including protrusion portions, and generates waveform data from imaging of cross-sectional profile, detect maximum height-positions of crests and of troughs of waveform data, set, based on waveform data, a maximum height-position of crest closest to width end of sheet as maximum height-position of end crest, set a position corresponding to an edge of protrusion portion of sheet, located on more width end side than maximum height-position of end crest, as minimum height-position of a terminal trough, detect distance in width direction of sheet between maximum height-position of end crest and of the terminal trough, and measure protrusion length of protrusion portion based on detected distance.