METHOD TO MEASURE TIME INTERVALS BETWEEN RADIATION PULSES Russian patent published in 2013 - IPC G01J11/00 G04F13/02 

FIELD: measurement equipment.

SUBSTANCE: in the method for measurement of time intervals between radiation pulses each of pulses generated by an investigated object is introduced into the appropriate light guide, the opposite ends of light guides are arranged in the form of a matrix, its image with the help of an optical system including a rotary mirror is moved along a photosensitive surface of a photodetector, on which light marks are fixed. Time intervals are determined between marks as a quotient from division of distances between them into a speed of image scan, at the same time the time intervals are broken into two parts: the first one, common for all intervals (delay time T_spec), the value of which is by 1 mcs lower than the time of development of the investigated process, produced by calculation, and the second one, requiring measurement for each interval ΔT_ik, where i, k - numbers of a column and a line of the light guide image in the matrix. At the moment T_spec a light signal is generated, sent with the help of light guides into corner points of the matrix and fixed with the help of a digital recorder, and this signal is delayed relative to the start one by the specified value, radiation pulses are fixed in the same frame from light guides at the completing stage of the process, as well as time marks generated with the specified frequency, using the coordinates of corner points of the light guide matrix, and also knowing the number of columns m and lines n in it, through calculation they determine coordinates of all light guides at the moment T_spec, the difference of coordinates ΔX_ik is defined along the direction of image scan for each light guide at the moment of radiation of light pulses by them and at the moment T_spec. At the same time a recorder based on CCD-matrix is used, coordinates of light marks are coordinates of a pixel in the light guide image, which accumulated the maximum charge, using time marks, the speed of image scan is determined, intervals ΔT_jk are found as the quotient from division of the appropriate difference of coordinates into the speed of scan, the sought for time intervals T_ik are defined as a sum of intervals T_spec+ΔT_ik.

EFFECT: reduced error of measurements.

3 dwg, 1 tbl