Pulse signal pulse width measuring device adopting proportional threshold judgment
A pulse signal, proportional technology, used in the field of automatic pulse width measurement
Inactive Publication Date: 2019-05-17
BEIJING INST OF REMOTE SENSING EQUIP
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[0004] The purpose of the present invention is to provide a pulse signal pulse width measurement device using proportional threshold judgment to solve the problem that the pulse signal output by the product to be tested needs to be automatically tested and judged
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[0020] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] The device for measuring the pulse width of a pulse signal using a proportional threshold decision includes: a filter debounce module 1, a differential module 2, a rectification module 3, an initial threshold extraction module 4, a peak search module 5, a delay module 6 and a pulse width measurement module 7. Schematic diagram of the pulse width measurement structure of the pulse signal using proportional threshold judgment as shown in figure 1 shown.
[0022] The filter debounce module 1 eliminates the high frequency component of the pulse signal, and smoothes the signal.
[0023] The differential module 2 performs differential processing on the pulse signal to obtain a differential signal Z, and implements the differential processing in a digital discrete domain by means of differential.
[0024] The rectification module 3 performs ...
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The invention discloses a pulse signal pulse width measuring device adopting proportional threshold judgment. A filtering and dithering elimination module (1) eliminates a high-frequency component ofa pulse signal and carries out smoothing processing on the signal; a differential module (2) conducts differential processing on the pulse signal to obtain a differential signal Z; a rectifying module(3) performs absolute value operation on the differential signal; an initial threshold extraction module (4) searches for the maximum value of an absolute value of the signal processed by the rectifying module (3), and obtains an initial judgment threshold by a specified threshold ratio; a peak value searching module (5) obtains and outputs the maximum and minimum values of each pair of positiveand negative peaks of the differential signal; a time delay module (6) performs time delay of a specified duration on the signal; and a pulse width measuring module (7) carries out searching and positioning according to the peak values, and completes peak value position measurement to obtain a pulse width output. The problem in automatic high-precision measurement of conventional pulse signals issolved, and the fluctuation of the signal strength can be better adapted.
Description
technical field [0001] The invention relates to the technical field of pulse width automatic measurement, in particular to a pulse signal pulse width measurement device using proportional threshold judgment. Background technique [0002] Pulse signals widely exist in various communication equipment or test equipment. In communication equipment, pulse signals are often used as information bearing methods. For example, amplitude modulation signals use the presence or absence and width of pulse signals as the presentation of 0 / 1 data for carrier modulation and then external transmission; for example, serial communication directly uses pulses on the baseband to Realize short-distance low-speed communication. In the test equipment, the pulse signal is usually obtained by detecting the radio frequency signal output by the product to be tested, and the working status of the product to be tested is judged by monitoring it. [0003] The traditional pulse signal monitoring method ma...
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IPC IPC(8): G01R29/02
Inventor 张前南陶磊岩
Owner BEIJING INST OF REMOTE SENSING EQUIP