Semiconductor laser control board card

Abstract

The utility model provides a kind of semiconductor laser control board, it is related to laser technical field.Laser control and motion integrated system are included: motion control module: using Tmc chip realizes laser motion control;Crystal oscillator module: X6 crystal oscillator uses active 24MHZ crystal oscillator;Reference source module: using REF3033 as the reference source of analog quantity;Red light brightness adjustment module: setting a road DAC is used to adjust the brightness of red light, to compensate the brightness attenuation after red light light decay;Laser temperature detection and protection module: setting AD1 and AD2 are used to detect the thermistor of laser.In the utility model, laser light emission control and laser motion are integrated together, small space occupation, high development efficiency, cost saving, reliable control, solve the semiconductor laser control laser light emission system and motion control separate two sets of control system in prior art, large space occupation, low development efficiency, high cost, and the problem that the communication of two sets of systems appears time delay.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, specifically to a semiconductor laser control board. Background Technology

[0002] Currently, the light output system of semiconductor lasers is provided by the laser manufacturer, while the motion control of the laser is provided by another company.

[0003] Currently, the control of laser output systems and motion control for semiconductor lasers are generally two separate control systems, which results in large space occupation, low development efficiency, high cost, and timing delays in communication between the two systems. Utility Model Content

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a semiconductor laser control board that solves the problems mentioned in the background section.

[0005] Technical solution To achieve the above objectives, this utility model provides the following technical solution: a semiconductor laser control board, comprising a laser control and motion integration system: Motion control module: Uses TMC chip to achieve laser motion control; Crystal oscillator module: The X6 crystal oscillator uses an active 24MHz crystal oscillator; Reference source module: REF3033 is used as the reference source for analog quantities; Red light brightness adjustment module: A DAC is set up to adjust the brightness of red light to compensate for the brightness decay after red light decays; Laser temperature detection and protection module: AD1 and AD2 are set to detect the thermistors of the laser; Laser output power control module: The LM258 amplifies the 3.3V voltage output by the MCU to 0-10V. The 0-10V voltage is supplied to DA+ to control the laser output power. The analog power value can also control the laser switch. Changing the analog value to 0 will turn off the laser. Laser switch module: Uses G5nb Omron relay as laser switch, which is compatible with both high-level and low-level light output signals; Emergency stop protection module: It is equipped with an external manual emergency stop short-circuit signal transmission channel. After the signal is transmitted to the control system, the control system will respond by cutting off the output light signal. Stepper motor limit module: The limit switches for the two stepper motors use TLP109 logic optocouplers with a transmission rate of 1Mbps.

[0006] As a preferred embodiment of the semiconductor laser control board of this utility model, the Tmc chip has a chopper control function, which significantly improves the motor's anti-interference capability compared with the conventional DRV8825 chip and effectively prevents the motor from shaking when it is stopped.

[0007] As a preferred embodiment of the semiconductor laser control board of this utility model, the X6 crystal oscillator significantly improves the circuit's anti-interference capability, the 24MHz high-frequency crystal oscillator improves the calculation accuracy, and the REF3033 reference source significantly improves the accuracy of analog quantities compared to the 3.3V voltage formed by 24V filtering.

[0008] As a preferred embodiment of the semiconductor laser control board of this utility model, AD1 and AD2 read the laser temperature by converting the resistance change of the thermistor into a voltage change. When the temperature exceeds the limit value, the program automatically cuts off the laser output signal and issues an alarm signal.

[0009] As a preferred embodiment of the semiconductor laser control board of this utility model, the stepper motor can ensure timely response and prevent false triggering caused by excessively fast response. The TLP109 logic optocoupler is connected in parallel with a 560-ohm resistor to act as a release channel for interference signals and prevent interference signals from triggering the logic optocoupler.

[0010] Beneficial effects This invention provides a semiconductor laser control board. It has the following advantages: In this invention, laser output control and laser motion are integrated into one, which occupies little space, has high development efficiency, saves costs, and provides reliable control. It solves the problem in the prior art where the semiconductor laser control laser output system and motion control are separate control systems, which occupy a lot of space, have low development efficiency, high cost, and cause timing delays in communication between the two systems. Attached Figure Description

[0011] Figure 1 This is the core circuit diagram of the laser motion control system of this utility model; Figure 2 This diagram shows the power supply for the crystal oscillator circuit and analog reference source of the main control MCU of this invention. Figure 3 Diagram of the power supply module for the laser red light indicator and the laser temperature detection module of this utility model; Figure 4 This is a circuit diagram of the laser power control and light output control of this utility model; Figure 5 This is the circuit diagram of the TLP109 logic optocoupler transmission rate of this utility model. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] This utility model embodiment provides a semiconductor laser control board, such as Figure 1-5 As shown, it includes a laser control and motion integration system: Motion control module: Uses TMC chip to achieve laser motion control; Crystal oscillator module: The X6 crystal oscillator uses an active 24MHz crystal oscillator; Reference source module: REF3033 is used as the reference source for analog quantities; Red light brightness adjustment module: A DAC is set up to adjust the brightness of red light to compensate for the brightness decay after red light decays; Laser temperature detection and protection module: AD1 and AD2 are set to detect the thermistors of the laser; Laser output power control module: The LM258 amplifies the 3.3V voltage output by the MCU to 0-10V. The 0-10V voltage is supplied to DA+ to control the laser output power. The analog power value can also control the laser switch. Changing the analog value to 0 will turn off the laser. Laser switch module: Uses G5nb Omron relay as laser switch, which is compatible with both high-level and low-level light output signals; Emergency stop protection module: It is equipped with an external manual emergency stop short-circuit signal transmission channel. After the signal is transmitted to the control system, the control system will respond by cutting off the output light signal. Stepper motor limit module: The limit switches for the two stepper motors use TLP109 logic optocouplers with a transmission rate of 1Mbps.

[0014] The TMC chip features chopper control, which significantly improves the motor's anti-interference capability compared to the conventional DRV8825 chip, effectively preventing motor vibration when the motor is stationary.

[0015] like Figure 1 As shown, the TMC2209 chip controls the movement of two stepper motors to adjust the size and vertical movement of the light spot; the TMC chip uses an STM32F407 MCU to control the direction, speed, and position of the motor movement; the TMC chip's unique noise reduction function ensures quiet operation of the motor; the TMC chip's chopper control significantly improves the motor's anti-interference capability compared to the conventional DRV8825 chip, preventing the motor from shaking when it is stationary.

[0016] The X6 crystal oscillator significantly improves the circuit's anti-interference capability, the 24MHz high-frequency crystal oscillator improves the operational accuracy, and the REF3033 reference source significantly improves the accuracy of analog quantities compared to the 3.3V voltage formed by filtering with 24V.

[0017] like Figure 2 As shown, the X6 crystal oscillator uses an active 24MHz crystal oscillator, which significantly improves the circuit's anti-interference capabilities, and the 24MHz high-frequency crystal oscillator improves the operational accuracy; the use of REF3033 as the analog reference source significantly improves the accuracy of the analog signal (compared to the 3.3V voltage formed by filtering with 24V).

[0018] AD1 and AD2 read the laser temperature by converting the resistance change of the thermistor into a voltage change. When the temperature exceeds the limit, the program automatically cuts off the laser output signal and issues an alarm signal.

[0019] like Figure 3 As shown, a DAC is used to adjust the brightness of the red light, which can compensate for the brightness decay after the red light decays; AD1 and AD2 are used to detect the thermistors of the laser. The temperature of the laser is read by converting the resistance change of the thermistor into a voltage change. If the temperature exceeds the limit, the program will automatically cut off the laser output signal and issue an alarm signal.

[0020] like Figure 4 As shown, the LM258 amplifies the 3.3V voltage from the MCU to 0-10V, which is then supplied to DA+ to control the laser output power. The laser switch uses a G5nb Omron relay, compatible with both high-level and low-level output signals. An externally triggered emergency stop short-circuit signal is transmitted to the control system, which then cuts off the output signal.

[0021] The stepper motor can ensure timely response while preventing false triggering due to excessively fast response. A 560-ohm resistor is connected in parallel with the TLP109 logic optocoupler to act as a release channel for interference signals and prevent interference signals from triggering the logic optocoupler.

[0022] like Figure 5 As shown, the limit switches of the two stepper motors use TLP109 logic optocouplers with a transmission rate of 1Mbps, which can ensure timely response and prevent false triggering caused by excessively fast response. A 560-ohm resistor is connected in parallel with the TLP109 logic optocoupler to act as a discharge channel for interference signals and prevent interference signals and static electricity from triggering the logic optocoupler.

[0023] In summary, integrating laser beam emission control and laser motion together results in a small footprint, high development efficiency, cost savings, and reliable control.

[0024] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. All electrical equipment in this utility model is powered by an external power source.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A semiconductor laser control board, comprising a laser control and motion integration system, characterized in that: Motion control module: Uses TMC chip to achieve laser motion control; Crystal oscillator module: The X6 crystal oscillator uses an active 24MHz crystal oscillator; Reference source module: REF3033 is used as the reference source for analog quantities; Red light brightness adjustment module: A DAC is set up to adjust the brightness of red light to compensate for the brightness decay after red light decays; Laser temperature detection and protection module: AD1 and AD2 are set to detect the thermistors of the laser; Laser output power control module: The LM258 amplifies the 3.3V voltage output by the MCU to 0-10V. The 0-10V voltage is supplied to DA+ to control the laser output power. The analog power value can also control the laser switch. Changing the analog value to 0 will turn off the laser. Laser switch module: Uses G5nb Omron relay as laser switch, which is compatible with both high-level and low-level light output signals; Emergency stop protection module: It is equipped with an external manual emergency stop short-circuit signal transmission channel. After the signal is transmitted to the control system, the control system will respond by cutting off the output light signal. Stepper motor limit module: The limit switches for the two stepper motors use TLP109 logic optocouplers with a transmission rate of 1Mbps.

2. The semiconductor laser control board according to claim 1, characterized in that: The Tmc chip has a chopper control function, which significantly improves the motor's anti-interference capability compared to the conventional DRV8825 chip and effectively prevents the motor from shaking when it is stopped.

3. A semiconductor laser control board according to claim 1, characterized in that: The X6 crystal oscillator significantly improves the circuit's anti-interference capability, the 24MHz high-frequency crystal oscillator improves the calculation accuracy, and the REF3033 reference source significantly improves the accuracy of analog quantities compared to the 3.3V voltage formed by 24V filtering.

4. A semiconductor laser control board according to claim 1, characterized in that: The AD1 and AD2 read the laser temperature by converting the resistance change of the thermistor into a voltage change. When the temperature exceeds the limit, the program automatically cuts off the laser output signal and issues an alarm signal.

5. A semiconductor laser control board according to claim 1, characterized in that: The stepper motor can ensure timely response while preventing false triggering due to excessively fast response. The TLP109 logic optocoupler is connected in parallel with a 560-ohm resistor to act as a release channel for interference signals and prevent interference signals from triggering the logic optocoupler.

Images