FPGA-based time delay settable time interval measuring device and measuring method
A technology of time interval measurement and time delay, which is applied in the direction of electrical unknown time interval measurement, devices and instruments for measuring time intervals, etc., and can solve the problems of inability to measure time intervals with instruments
Active Publication Date: 2020-04-24
嘉兴泰传光电有限公司
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Problems solved by technology
[0002] At present, many instruments for measuring time intervals on the market must specify a start signal and a stop signal when measuring two time interval signals, and the start signal must precede the stop signal, but when measuring some synchronous signals, the delay is due to the two synchronous signals themselves There may be changes before and after, and it is not necessarily guaranteed that a certain signal is in front, so such a time interval measuring instrument cannot be used to measure the time interval
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[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited by this.
[0016] see first figure 1 , figure 1 It is a block diagram of a time interval measurement device based on FPGA that can be set for time delay. It can be seen from the figure that the time interval measurement device based on FPGA can be set up, including an FPGA module, and the FPGA module has a signal 1 input port, Signal 2 input port, the output of the FPGA module is connected to the first TDC7200 module, the second TDC7200 module, the first and second TDC7200 modules through the SPI bus, and the FPGA module is connected to the single-chip microcomputer. The single-chip microcomputers are connected by means of serial communication.
[0017] The method for measuring the time interval using the above-mentioned FPGA-based time-delay-configurable time-interval measurement dev...
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The invention discloses an FPGA-based time delay settable time interval measuring device and measuring method. The device comprises an FPGA module. The FPGA module is provided with a signal 1 input port and a signal 2 input port. The output end of the FPGA module is connected with a single-chip microcomputer through a first TDC7200 module and a second TDC7200 module via an SPI bus, and the FPGA module is connected with the single-chip microcomputer in a serial port communication mode. The whole system can work normally if the delayed counting stopping time is set to fall behind the counting starting time so that the time interval between the signal 1 and the signal 2 is ensured to be measured only by setting proper time delay without forcing that the signal 1 is ahead of the signal 2.
Description
technical field [0001] The invention relates to a time interval, in particular to an FPGA-based time-delay-configurable time-interval measurement device and a measurement method. Background technique [0002] At present, many instruments for measuring time interval on the market must specify a start signal and a stop signal when measuring two time interval signals, and the start signal must precede the stop signal, but the delay when measuring some synchronization signals is because the two synchronization signals themselves There may be changes before and after, and it is not necessarily guaranteed that a certain signal is in front, so such a time interval measuring instrument cannot be used to measure the time interval. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide an FPGA-based time-delay-settable time interval measurement device and a measurement method. The whole system can work normally as long as the time for stopping counting ...
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Login to View More IPC IPC(8): G04F10/04
CPCG04F10/04
Inventor 陈建平吴龟灵胡亮
Owner 嘉兴泰传光电有限公司