High precision time interval measurement PCI card

Abstract

A high-precision timing interval measurement PCI card belongs to the measurement technology field. Hardware (4) includes PCI bus bridging module (2) with the core PCI9054, high-precision timing interval measurement module (1) with the core TDC-GP1, and core interface logic module (3) with the core XC3S400 FPGA; the hardware (4) comprising the timing interval measurement module (1), PCI bus bridging module (2), and interface logic module (3) is inserted in the PCI slots (6) of the computer (5), and under the control of the Linux operating system drivers and application software (7), it achieves high-precision timing interval measurement. The advantages are that it has high transmission speed, meeting the high-speed timing interval measurement application; and strong programmability, with good portability; strong functional scalability, and according to different applications, designing corresponding application software to facilitate the application in other areas.

Description

technical field

[0001] The invention belongs to the technical field of measurement, and in particular provides a PCI card for measuring high-precision time intervals, which is suitable for measuring high-precision pulse time intervals. It has a wide range of applications in atomic physics, astronomical experiments, laser ranging, positioning and timing, aerospace telemetry and remote control, integrated circuit design, communication and other fields. Background technique

[0002] In the process of laser ranging, it is necessary to accurately measure the time interval between the time when the laser is emitted and the time when the reflected laser is received, and the distance is calculated according to the measured time interval. The measurement accuracy of the time interval is the measurement accuracy of the distance. In practice, two pulse signals are used to mark the time of laser emission and reception. This patent designs a pulse time interval measurement PCI card, wh...

Images