Method for matching gating signals with frequency signals of laser
A technology of frequency signal and gate control signal, which is applied in the field of laser gate control signal and frequency signal matching, can solve the problems of reducing marking quality and affecting the effect of laser processing, and achieve the effect of improving the effect
Active Publication Date: 2009-11-04
HANS LASER TECH IND GRP CO LTD
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Problems solved by technology
This mismatch will affect the effect of laser processing, especially in fine marking, which will reduce the marking quality. In the current laser application, there is no solution to this technical problem.
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[0016] When the laser is marking or marking, the high level stage (or low level) of the gating signal is the light output stage of the laser, and the rising edge moment (or falling edge moment) of the frequency signal corresponds to a light pulse output by the laser, such as figure 1 It is a structural schematic diagram of the mismatch between the existing gating signal and the frequency signal, S0 is the gating signal, S1 is the frequency signal, S2 is the corresponding optical pulse signal, and t is the edge time difference between S0 and S1 (the edge can be a rising edge, It can also be a falling edge, which is described here as a rising edge, that is, the rising edge turns on the light, and the falling edge turns off the light), T is the period of S2, and t1 is the edge time difference between S0 and S2 (t1-t=constant). Since S1 and S2 belong to signals of different time domains and frequencies, each time the edge of S0 changes, the value of t is different, so that the time...
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The invention relates to a method for matching gating signals with frequency signals of a laser, which is realized in a programmable logic device; the method has the following steps: detecting cycle of the frequency signals, temporarily storing the cycle in a register; detecting the rising edge or the falling edge of the gating signals; at the moment of the rising edge and falling edge of the gating signals, generating frequency signals having the same cycle and specific time relationship with the gating signals by the cycle data temporarily stored in the register; using the signals to replace previous frequency signals which do not have specific time relationship with the gating signals. In the invention, the gating signals are matched with the frequency signals, and first output light pulse matching corresponding to each light introduction of gating signals, namely, time consumed from each time of light introduction of gating signals to the corresponding output of the first optical pulse is fixed, thus improving laser processing effect.
Description
technical field [0001] The invention relates to a method for matching a gate control signal and a frequency signal of a laser. Background technique [0002] When the laser is applied, especially for laser marking or marking, the light sequence is generally controlled by the gating signal and the frequency signal: the gating signal is used to determine when the light is emitted and when the light is turned off; the frequency signal is used to determine the light output The output frequency of the optical pulse. The gating signal and the frequency signal are often in different time domains, and the time difference between the two edges (there are four combinations: rising edge and rising edge, rising edge and falling edge, falling edge and rising edge, falling edge and falling edge) is the time difference (0 to T, T is the period of the light pulse), that is, the time relationship is uncertain, and the resulting phenomenon is that the first output light pulse corresponding to...
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IPC IPC(8): H03L7/00H01S3/00H01S5/00
Inventor 高云峰赵恒吕启涛吕凤萍金艳丽刘林周德平马淑贞
Owner HANS LASER TECH IND GRP CO LTD