A laser weakening process control system and method

Abstract

A kind of laser weakening process control system and method, the system includes laser detection module and laser control module;The laser detection module is used to sample the heat of the plate material, and the heat is converted into corresponding electrical signal and then real-time feedback to laser control module;The laser control module is used to transmit real-time control signal to laser, controls laser to output corresponding power, frequency and duty cycle pulse by the real-time control signal, and receives the electrical signal fed back by laser detection module, and adjusts the real-time control signal based on the electrical signal fed back by laser detection module in real time.The present application controls each parameter of laser in real time, so as to realize the precise control of laser processing depth on plate material, and achieve the purpose of precisely controlling material weakening strength.

Description

Technical Field

[0001] This invention relates to the field of laser processing, and specifically to a laser weakening process control system and method. Background Technology

[0002] With the continuous expansion of the laser processing field, using lasers to weaken the strength of sheet materials has become a new application area. The weakening process is different from the traditional cutting or welding process. It reduces the strength and other physical properties of certain parts of the sheet material without changing its external dimensions, thereby meeting certain specific needs, such as weakening the dashboard of a car.

[0003] For example, the weakening process of car dashboards is to change the connection strength of the airbag part of the car dashboard without affecting the appearance, so that the airbag can quickly deploy from the corresponding part of the dashboard in the event of a car accident to protect the occupants, without damaging the dashboard due to daily operation. Summary of the Invention

[0004] In view of the technical defects and drawbacks existing in the prior art, embodiments of the present invention provide a laser weakening process control system and method to overcome the above problems or at least partially solve the above problems, the specific solution of which is as follows:

[0005] As a first aspect of the present invention, a laser weakening process control system is provided, the system comprising a laser detection module and a laser control module;

[0006] The laser detection module is used to sample the heat transmitted through the plate and convert the heat into a corresponding electrical signal, which is then fed back to the laser control module in real time.

[0007] The laser control module is used to transmit real-time control signals to the laser, control the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receive electrical signals fed back by the laser detection module, and adjust the real-time control signals in real time based on the electrical signals fed back by the laser detection module.

[0008] Furthermore, the real-time control signal includes various laser parameters, including laser output power, frequency, and duty cycle. The laser outputs pulses with corresponding power, frequency, and duty cycle based on the power, frequency, and duty cycle among the laser parameters.

[0009] Furthermore, the laser detection module includes a pyroelectric sensor, a signal conditioning circuit, and a feedback output interface;

[0010] The pyroelectric sensor, as a thermoelectric conversion device, is used to convert the sampled heat into a sensor signal;

[0011] The signal conditioning circuit is used to convert the sensor signal into an analog voltage signal and feed it back to the laser control module through the feedback output interface.

[0012] Furthermore, the signal conditioning circuit includes a current amplification circuit and a band-stop filter circuit connected in sequence. The sensor signal output by the pyroelectric sensor is converted into an analog voltage signal by the current amplification circuit and the band-stop filter circuit, and then output to the laser control module.

[0013] Furthermore, the laser control module includes a feedback input interface, a real-time control module, and a laser signal output module. The feedback input interface is used to receive real-time electrical signals fed back by the laser detection module. The real-time control module is used to convert the electrical signals into real-time control signals for controlling various parameters of the laser. The laser signal output module is used to control the output of the laser in real time based on the real-time control signals.

[0014] Furthermore, the laser control module also includes a host computer interface. The real-time control module is electrically connected to the host computer through the host computer interface, receives the processing parameters sent by the host computer, and uploads the processing report to the host computer.

[0015] Furthermore, the laser control module also includes an I / O interface, through which the real-time control module communicates with external devices.

[0016] As a second aspect of the present invention, a method for controlling laser weakening process is provided, the method comprising:

[0017] The heat transmitted through the plate is sampled in real time by the laser detection module, and the heat is converted into a corresponding electrical signal and fed back to the laser control module in real time.

[0018] The laser control module transmits real-time control signals to the laser, controls the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receives electrical signals fed back from the laser detection module, and adjusts the real-time control signals in real time based on the electrical signals fed back from the laser detection module.

[0019] Furthermore, the real-time control signal includes various laser parameters, including laser output power, frequency, and duty cycle. The laser outputs pulses with corresponding power, frequency, and duty cycle based on the power, frequency, and duty cycle among the laser parameters.

[0020] Furthermore, the specific steps of receiving the electrical signal fed back by the laser detection module and adjusting the real-time control signal in real time based on the electrical signal fed back by the laser detection module are as follows:

[0021] The laser receives real-time electrical signals from the laser detection module, converts these signals into real-time control signals to control various laser parameters, and controls the laser output in real time based on these real-time control signals.

[0022] The present invention has the following beneficial effects:

[0023] This invention achieves precise control of the laser processing depth on a substrate by controlling various laser parameters in real time, thereby precisely controlling the material weakening intensity. The method primarily involves real-time monitoring of temperature changes at the material weakening point during the laser weakening process to determine the real-time weakening degree. Based on these changes, the laser parameters are controlled in real time to achieve control over the weakening process. Attached Figure Description

[0024] Figure 1 This is a control system architecture diagram for a laser weakening process provided in an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, as a first embodiment of the present invention, a laser weakening process control system is provided, which mainly includes the following two modules:

[0027] The laser detection module is used to sample the heat transmitted through the plate and convert the heat into a corresponding electrical signal, which is then fed back to the laser control module in real time.

[0028] The laser control module is used to transmit real-time control signals to the laser, control the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receive electrical signals fed back by the laser detection module. Based on the electrical signals fed back by the laser detection module, the real-time control signals are adjusted in real time, thereby achieving precise control of the weakening strength of the board material.

[0029] The real-time control signal includes various laser parameters, including laser output power, frequency, and duty cycle. The laser outputs pulses with corresponding power, frequency, and duty cycle based on the power, frequency, and duty cycle of the laser parameters.

[0030] Preferably, the laser control module includes a pyroelectric sensor, a signal conditioning circuit, and a feedback output interface. The pyroelectric sensor, as a thermoelectric conversion device, is used to convert the sampled heat into a sensor signal. The signal conditioning circuit is used to convert the sensor signal into an analog voltage signal and feed it back to the laser control module through the feedback output interface.

[0031] The signal conditioning circuit includes a current amplification circuit and a band-stop filter circuit connected in sequence. The sensor signal output by the pyroelectric sensor is converted into an analog voltage signal by the current amplification circuit and the band-stop filter circuit, and then output to the laser control module to realize real-time control of various laser parameters.

[0032] Preferably, the laser control module consists of both hardware and software components, primarily implementing functional modules such as a feedback input interface, a real-time control module, a laser signal output module, an I / O interface, and a host computer configuration interface. Before the processing begins, processing parameters and other processing information are pre-configured via the host computer. During processing, the feedback input interface receives real-time electrical signals from the laser detection module, which are then converted into real-time control signals for parameters such as laser power, frequency, and duty cycle in the real-time control module. The laser signal output module then controls the laser in real-time, and the module communicates with the equipment via the I / O interface to control the weakening process. After processing is complete, a processing report is uploaded to the host computer.

[0033] This invention proposes a laser weakening process control system that, by controlling various laser parameters in real time, enables precise control of the laser processing depth on a substrate, thereby achieving accurate control of the material weakening intensity. The method primarily involves real-time monitoring of temperature changes at the material weakening point during the laser weakening process to determine the real-time weakening degree. Based on these changes, the laser parameters are then controlled in real time to achieve control over the weakening process.

[0034] As a second embodiment of the present invention, a laser weakening process control method is also provided, the method comprising:

[0035] The heat transmitted through the plate is sampled in real time by the laser detection module, and the heat is converted into a corresponding electrical signal and fed back to the laser control module in real time.

[0036] The laser control module transmits real-time control signals to the laser, controls the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receives electrical signals fed back from the laser detection module, and adjusts the real-time control signals in real time based on the electrical signals fed back from the laser detection module.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser-weakening process control system, characterized by, The system includes a laser detection module and a laser control module; The laser detection module is used to sample the heat transmitted through the plate and convert the heat into a corresponding electrical signal, which is then fed back to the laser control module in real time. The laser control module is used to transmit real-time control signals to the laser, control the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receive electrical signals fed back by the laser detection module, and adjust the real-time control signals in real time based on the electrical signals fed back by the laser detection module. The laser detection module includes a pyroelectric sensor, a signal conditioning circuit, and a feedback output interface. The pyroelectric sensor, as a thermoelectric conversion device, is used to convert the sampled heat into a sensor signal; The signal conditioning circuit is used to convert the sensor signal into an analog voltage signal and feed it back to the laser control module through the feedback output interface. The signal conditioning circuit includes a current amplification circuit and a band-stop filter circuit connected in sequence. The sensor signal output by the pyroelectric sensor is converted into an analog voltage signal by the current amplification circuit and the band-stop filter circuit, and then output to the laser control module. The laser control module includes a feedback input interface, a real-time control module, and a laser signal output module. The feedback input interface is used to receive real-time electrical signals fed back by the laser detection module. The real-time control module is used to convert the electrical signals into real-time control signals for controlling various parameters of the laser. The laser signal output module is used to control the output of the laser in real time based on the real-time control signals. The laser control module also includes a host computer interface. The real-time control module is electrically connected to the host computer through the host computer interface, receives the processing parameters sent by the host computer, and uploads the processing report to the host computer. The real-time control signal includes various laser parameters, including laser output power, frequency, and duty cycle. The laser outputs pulses with corresponding power, frequency, and duty cycle based on the power, frequency, and duty cycle of the laser parameters.

2. The laser weakening process control system of claim 1, wherein, The laser control module also includes an I / O interface, through which the real-time control module communicates with external devices.

3. A method of controlling a laser-weakening process, using the laser-weakening process control system according to claim 1 or 2, characterized by, The method includes: The heat transmitted through the plate is sampled in real time by the laser detection module, and the heat is converted into a corresponding electrical signal and fed back to the laser control module in real time. The laser control module transmits real-time control signals to the laser, controls the laser to output pulses with corresponding power, frequency and duty cycle through the real-time control signals, and receives electrical signals fed back from the laser detection module, and adjusts the real-time control signals in real time based on the electrical signals fed back from the laser detection module.

4. The laser-weakening process control method of claim 3, wherein, The real-time control signal includes various laser parameters, including laser output power, frequency, and duty cycle. The laser outputs pulses with corresponding power, frequency, and duty cycle based on the power, frequency, and duty cycle of the laser parameters.

5. The laser-weakening process control method of claim 4, wherein, The specific steps of receiving the electrical signal fed back by the laser detection module and adjusting the real-time control signal in real time based on the electrical signal fed back by the laser detection module are as follows: Receiving the real-time electric signal fed back by the laser detection module, converting the electric signal into a real-time control signal for controlling various parameters of the laser, and controlling the output of the laser based on the real-time control signal.

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