A frequency pulse selector and its selection method

Abstract

The invention discloses a frequency pulse selector and selection method. The frequency pulse selector comprises a complex programmable logic device (CPLD), a lower computer and a menu selector, wherein the lower computer is connected with the input end of the CPLD, and the menu selector is connected with the output end of the CPLD. An upper computer comprises a data providing module, and the data providing module is used for providing first communication data. The lower computer comprises a data conversion module, the data conversion module is used for generating fractional frequency signals corresponding to the number of fractional frequencies and generating monocycle pulse signals corresponding to the monocycle pulses in number. The CPLD is used for receiving clock signals, generating control signals according to the fractional frequency signals, the monocycle pulse signals and the clock signals and sending the control signals to the menu selector. The frequency pulse selector and selection method can change output multiple pulses and the number of the monocycle pulses of a laser without adjusting a hardware circuit, thereby avoiding signal control abnormity caused by failures of the hardware circuit.

Description

technical field [0001] The present application relates to the field of electronic devices, in particular to a frequency pulse selector and a selection method. Background technique [0002] The frequency divider can realize the frequency division of any fraction of the signal. In the acousto-optic Q-switched laser system, the output repetition frequency of the laser can be changed through the signal after frequency division by the frequency divider. In the practical application of the laser, it is often necessary to change the output repetition frequency and the number of single-cycle pulses of the laser at the same time. Due to hardware limitations, the existing laser can only be realized by using the switch control signal, and the existing frequency divider cannot provide switch control. Signal. [0003] In this case, if you want to change the output repetition frequency and the number of single-cycle pulses of the laser at the same time, based on the existing technology, ...

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Problems solved by technology

[0004] The technical problem to be solved by the embodiment of the present application is to provide a frequency pulse selector, which can change the output repetition frequency and single-cycle pulse number of the laser more conveniently, so as to solve the problem of changing the output repetition frequency and single-cycle pulse number of the laser through the adjustment of the hardware circuit. The problem with the number of periodic pulses

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