TW202339376A - Self-modulating electrical power laser system and control method - Google Patents

Abstract

The invention provides a self-modulating input electrical power laser system and control method. After the laser is turned on for a period of time, the control module reduces the initial electrical power to the operating power of the laser, and it maintains the operating power until the laser is turned off, which can reduce the extra power consumption and achieve the energy-efficiency.

Description

Self-adjusting electric power laser system and control method

The invention relates to the field of laser, in particular to a laser system and control method with adjustable laser power.

High-power laser systems are important components in today's material processing applications. Among them, fiber lasers have become the mainstream laser source for industrial processing due to their high conversion efficiency and small size. In a laser system, the greater the laser light power, the higher the current/voltage required, so a larger voltage needs to be given during startup.

The traditional control method uses the starting voltage as the operating voltage, so after the laser is turned on, the maximum voltage output is still maintained, as shown in Figure 1. However, the laser does not need to be maintained at the maximum voltage to operate after it is started. Therefore, excess voltage will be generated during laser operation, and the heat converted into heat will easily reduce the service life of electronic components.

In view of the above energy consumption problem, the present invention provides a laser system that self-regulates electric power. After starting the laser for a period of time, the output voltage is lowered and maintained, thereby reducing electric power loss and achieving energy saving effects.

The present invention provides a laser system that self-regulates electric power, including: a control module; and A laser light source module, connected to the control module, is used to output laser light with an excitation power or an operating power; When the laser light source module outputs the laser light with the excitation electric power for a period of time, the control module controls the laser light source module to modulate the excitation electric power to the operation power and maintains the output with the operation power. The laser light.

The invention provides a laser control method for self-regulating electric power, which includes: Control a laser light source module to output laser light with an excitation power through a control module; and When the laser light source module outputs the laser light with the excitation electric power for a period of time, the control module controls the laser light source module to modulate the excitation electric power to an operating power and maintains the output of the operating electric power. The laser light.

The following embodiments, together with the drawings, are used to illustrate the spirit of the present invention and allow those skilled in the art to clearly understand the technology of the present invention. However, they are not intended to limit the scope of the present invention. The scope of the patent rights of the present invention shall be determined by the claims. define. It is particularly emphasized that the drawings are for schematic purposes only and do not represent the actual size or quantity of components. Some details may not be fully drawn in order to keep the drawings concise.

The laser system of the present invention provides excitation voltage and stable (operating) voltage to the laser element, provides an excitation voltage with a higher voltage value during the initial period of excitation, and provides a stable voltage with a lower voltage value after the initial period, and Hold until the laser is turned off.

Please refer to Figure 2, which is a block diagram of the laser system of the present invention. The laser system includes a control module 11 and a laser light source module 12. The laser light source module 12 includes a laser element 122 and a power supply device 121. The power supply device 121 is connected between the control module 11 and the laser element 122. between. The control module 11 outputs the activation signal to the power supply device 121. The power supply device 121 correspondingly provides the excitation voltage (or activation voltage) to the laser element 122. In this embodiment, the excitation voltage is 70~80V, and the laser element 122 corresponds to Output laser light with excitation power.

When the laser light with excitation power is output for a period of time, such as 10~30μs, preferably 20~30μs, the control module 11 outputs a reduction signal to the power supply device 121, and the power supply device 121 reduces the excitation voltage by 5~10V. The voltage is the operating voltage to the laser element 122, so that the laser element 122 outputs laser light with operating power, and maintains the laser light with operating power until the laser is turned off, completing a laser opening and closing adjustment. Understandably, the operation The power is lower than the excitation power. In other embodiments, the actual manufacturing process will turn on/off the laser several times. The timing changes of the switching voltage are shown in Figure 3. The control module 11 gives an initial voltage of 79V. After 20 μs, the control module 11 decreases the voltage. voltage to 72V.

Figure 4 is a comparison diagram of the power of traditional laser processing (solid line) and the self-modulating power laser processing of the present invention (dashed line). Under different control voltages, lowering the operating voltage can significantly reduce power consumption by 5~50W.

In one embodiment, the laser element 122 of the laser light source module 12 can be a semiconductor laser, a fiber laser, a carbon dioxide laser, a solid-state laser, a liquid laser, a gas laser, a YAG laser, or other lasers that can generate High-power laser light devices, and the laser light includes laser light of various wavelength bands, such as infrared light, blue light, or green light, etc.

In one embodiment, the control module 11 includes an operation interface (not shown) for the user to input the required laser parameters. The laser parameters for different types of panels can also be preset and stored in the memory of the control module. Users can start the laser by simply selecting the required setting package, which can improve efficiency, reduce human error and maintain a certain quality. The parameter values include output voltage value, reduction time point and reduction voltage value, etc.

In one embodiment, the laser light source module 12 further includes a laser head element (not shown) disposed on the laser element 122 as a light outlet for the laser light, and the laser light is output through the laser head element, wherein the laser head element The component can adjust the laser light diameter.

Figure 5 is a flow chart of the laser control method of the present invention, which includes the following steps:

Step S01: Control the power supply device of the laser light source module to output an excitation voltage through the control module, so that the laser element of the laser light source module outputs laser light with excitation power.

Step S02: After the laser element outputs laser light with excitation power for a period of time, the control module lowers the excitation voltage to the operating voltage, thereby reducing the excitation electric power to the operating power, and maintains output of laser light with operating power until it is turned off. Laser.

In one embodiment, the operator can pre-set the required laser processing programs for different types of processing objects to the control module and save them through the above-mentioned operating interface, and only need to select the corresponding program when getting on the machine.

The present invention provides a self-adjusting power laser system and a control method. By adjusting the voltage supplied to the laser, the electrical power loss can be reduced and the energy saving effect can be achieved.

11:Control module 12:Laser light source module 121:Power supply device 122:Laser components S01~S02: steps

Figure 1 is a general laser operating voltage timing diagram.

Figure 2 is a block diagram of the laser system of the present invention.

Figure 3 is a timing diagram of laser starting and operating voltage according to the present invention.

Figure 4 shows the control voltage and power consumption curve with or without adjusting the laser voltage.

Figure 5 is a flow chart of the laser control method of the present invention.

11:Control module

12:Laser light source module

121:Power supply device

122:Laser components

Claims (7)

A self-adjusting electric power laser system, including: a control module; and A laser light source module, connected to the control module, is used to output laser light with an excitation power or an operating power; When the laser light source module outputs the laser light with the excitation power for a period of time, the control module controls the laser light source module to reduce the excitation power to the operating power and maintains the output with the operating power. The laser light. The laser system as described in claim 1, wherein the laser light source module includes: A laser element for outputting the laser light with the excitation power or the operating power; and A power supply device connected between the control module and the laser element for providing an excitation voltage or an operating voltage to the laser element; When the power supply device provides the excitation voltage for the time, the control module controls the power supply device to lower the excitation voltage to the operating voltage and maintains providing the operating voltage to the laser element. The laser system as described in claim 1, wherein the time ranges from 10 to 30 μs. The laser system of claim 2, wherein the laser element is a semiconductor laser, a fiber laser, a carbon dioxide laser, a solid laser, a liquid laser, a gas laser, a YAG laser or a combination thereof. A laser control method for self-adjusting electric power, including: Control a laser light source module to output laser light with an excitation power through a control module; and When the laser light source module outputs the laser light with the excitation electric power for a period of time, the control module controls the laser light source module to lower the excitation electric power to an operating power and maintains the output with the operating power. The laser light. The laser control method as described in claim 5 further includes presetting a laser processing program in the control module. The laser control method as described in claim 5, wherein the time ranges from 10 to 30 μs.