48results about How to "Complete measurement" patented technology

A device for measuring heights and/or thicknesses on a measurement object, includes (i) a first low-coherence interferometer for combining, in one spectrometer, a reference optical beam and a measurement optical beam originating from reflections of the light on interfaces of the measurement object, to produce a grooved spectrum signal with spectral modulation frequencies, (ii) apparatus for measuring an item of position information representative of the relative optical length, (iii) electronic and calculating apparatus arranged for determining at least one spectral modulation frequency representative of an optical path difference between the measurement optical beam and the reference optical beam, and for determining, by exploiting the item of information and the spectral modulation frequency, at least one height and/or thickness on the measurement object, and (iv) second optical apparatus for measuring distance and/or thickness with a second measurement beam incident on the measurement object on a second face opposite the measurement beam.

The invention discloses an impact jet pressure and vibration composite measuring device and an impact jet pressure and vibration composite measuring method. The impact jet pressure and vibration composite measuring device comprises an impact jet generating device, a measuring head, a charge amplifier, a data acquisition and transmission card and an upper computer. The impingement jet flow generating device generates impingement jet flow, the measuring head monitors the pressure of the impingement jet flow, the measuring head is connected with the charge amplifier, the charge amplifier is connected with the data acquisition and transmission card, the data acquisition and transmission card is provided with a wireless data transmitting module, and data is transmitted out through wireless signals. The upper computer is provided with a wireless data receiving module for receiving jet pressure data from the data acquisition and transmission card, the upper computer is provided with LabView software for analyzing and processing the jet pressure data to obtain impact jet pressure and vibration data, and the pressure data are displayed on a display screen of the upper computer. The vibration data are stored in the upper computer in the form of a table. According to the impact jet flow pressure and vibration composite measurement device and the pressure and vibration composite measurement method thereof, the transient pressure of the impact jet flow and the pressure change and vibration signals of the impact pressure within a period of time can be obtained at the same time, and the instantaneous impact water pressure and pressure change of the jet flow can be monitored in real time; the problem that jet impact pressure is difficult to monitor in real time in the prior art is solved.