4results about "Measurment by measuring phase" patented technology

This application provides a wide-range 1PPS time difference measurement method, system, device, and medium. The method includes: acquiring a first 1PPS signal and a second 1PPS signal; conditioning and synchronizing the two 1PPS signals respectively; inputting the processed two 1PPS signals into a multi-phase sampling module for multi-phase sampling to generate an M-phase base clock sequence for phase interpolation; a high-linearity multi-phase clock interpolator, based on a phase control word, performs multi-phase weighted mixing based on a target phase interpolation clock on the M-phase base clock sequence; triggering time measurements when the first 1PPS signal and the second 1PPS signal arrive respectively, forming a first timestamp for the first 1PPS signal and a second timestamp for the second 1PPS signal respectively; and generating a time difference measurement result for the two 1PPS signals based on the difference between the first timestamp and the second timestamp. This application achieves wide dynamic range and high-precision 1PPS time difference measurement.

A pulse signal conversion unit (10) converts an input signal into a pulse signal having a pulse length corresponding to the magnitude of the input signal. A measurement unit (20) measures a first edge time difference between a pair of edges of the pulse signal. A division unit (28) divides the data using the first edge time difference by a second edge time difference in the cycle of a reference clock.

The application discloses a high-precision event timing measurement system and method based on event synchronous trigger sampling, comprising an event pulse trigger synchronous clock generator, a standard time base signal generator, a system clock generator, a high-speed analog-digital conversion module, a fine timing module, a coarse timing module, a ambiguity discrimination module and an event time calculation module. According to the application, the size of the event trigger synchronous sampling clock frequency and the stability of the standard time base signal frequency can be flexibly adjusted according to the actual measurement precision requirement, so as to meet the high-precision measurement requirement of the event timing in different application scenarios.

The invention provides a wide-range 1PPS time difference measurement method, system and device and a medium. The method comprises the steps that a first 1PPS signal and a second 1PPS signal are obtained, signal conditioning and synchronization are conducted on the two 1PPS signals respectively, the two processed 1PPS signals are input into a multi-phase sampling module for multi-phase sampling, and an M-phase basic clock sequence used for phase interpolation is generated; the high-linearity multi-phase clock interpolator executes multi-phase weighted mixing on the M-phase basic clock sequence based on a phase control word, interpolates a clock based on a target phase, triggers time measurement when a first 1PPS signal and a second 1PPS signal arrive, and forms a first timestamp of the first 1PPS signal and a second timestamp of the second 1PPS signal; and generating a time difference measurement result of the two 1PPS signals according to a difference value between the first timestamp and the second timestamp. According to the invention, wide-dynamic-range and high-precision 1PPS time difference measurement is realized.