An apparatus for environmental adaptive laser output intensity control

Abstract

The utility model relates to laser control technical field, concretely relates to a kind of device of environmental adaptive laser output intensity control, including laser drive module, laser lamp, light intensity acquisition module, switching module, laser drive module includes controller and laser constant current module, controller, laser constant current module, laser lamp are connected in proper order, the output end of light intensity acquisition module, the output end of switching module is connected with controller respectively;Controller receives the signal of light intensity acquisition module and exports the first PWM signal for adjusting laser output intensity to in laser constant current module;Controller receives the signal of switching module and exports the second PWM signal for adjusting laser output mode to in laser constant current module;The utility model solves the technical problem of the technical problem of the prior art in laser output intensity fixedly unchanged, cannot be flexibly self-adapting adjustment according to the light illumination dark condition of different application environment.

Description

Technical Field

[0001] This utility model relates to the field of laser control technology, and more specifically, to a device for environmentally adaptive laser output intensity control. Background Technology

[0002] In fields such as industrial manufacturing, automated assembly, and building surveying, laser calibration devices have become indispensable tools for precise positioning and calibration. However, the output intensity of existing laser calibration devices is usually a fixed value preset by the factory, or only supports a limited number of manual adjustments. This static output mode has limitations in real-world, complex application scenarios and cannot meet the needs of use in complex environments.

[0003] Specifically, when ambient light changes drastically, laser beams with fixed output intensity are prone to reduced contrast and difficulty in identifying marker points due to excessively strong external light, directly affecting positioning accuracy and work efficiency. Conversely, in dim or dark environments, excessively high-intensity laser output can cause glare and eye strain, leading to user fatigue and potentially affecting accurate judgment of the positioning center due to beam dispersion. Although some devices have manual adjustment functions, repeated operation is required, making them inconvenient in practical use.

[0004] Therefore, designing a laser calibration device that can flexibly and adaptively adjust to the lighting conditions of different application environments is of great significance for ensuring the clear visibility of markings, the accurate and reliable positioning, and the continuous high efficiency of operations. Utility Model Content

[0005] The purpose of this application is to provide an environmentally adaptive laser output intensity control device, which solves the technical problem in the prior art where the laser output intensity is fixed and cannot be flexibly and adaptively adjusted according to the lighting and darkness conditions of different application environments.

[0006] To solve the above-mentioned technical problems, the solution adopted in this application is as follows: This utility model provides an environmentally adaptive laser output intensity control device, including a laser driving module and a laser lamp. The laser driving module includes a controller and a laser constant current module, and the controller, laser constant current module, and laser lamp are connected in sequence. The device further includes a light intensity acquisition module and a switching module, with the output terminals of the light intensity acquisition module and the switching module respectively connected to the controller. The controller receives the signal from the light intensity acquisition module and outputs a first PWM signal for adjusting the laser output intensity to the laser constant current module; The controller receives the signal from the switching module and outputs a second PWM signal to the laser constant current module for adjusting the laser output mode.

[0007] In some embodiments, the laser constant current module includes two or more sets of laser constant current circuits, and each set of laser constant current circuits is connected to two or more laser lamps.

[0008] In some embodiments, the laser constant current circuit includes a constant current chip, the modulation signal receiving end of the constant current chip is connected to the controller, and the output end of the constant current chip is connected to the laser lamp.

[0009] In some embodiments, the constant current chip is model PT4115.

[0010] In some embodiments, the light intensity acquisition module includes a photodiode, a filter circuit, and a resistor. The positive terminal of the photodiode is connected to a power supply, and the negative terminal of the photodiode, one end of the filter circuit, and one end of the resistor are connected together. The other end of the resistor serves as the output terminal of the light intensity acquisition module, and the other end of the filter circuit is grounded.

[0011] In some embodiments, the switching module includes a button, a resistor, a capacitor, and a transient voltage suppression diode; one end of the resistor is connected to a power source, and the other end of the resistor, one end of the button, one end of the capacitor, and the cathode of the transient voltage suppression diode are connected together, with an output terminal set here as the output terminal of the switching module; the other end of the button, the other end of the capacitor, and the anode of the transient voltage suppression diode are connected together and grounded.

[0012] In some embodiments, the input terminal of the switching module is connected to the output terminal of the light intensity acquisition module. The switching module receives the signal from the light intensity acquisition module and makes a judgment, and outputs a signal to the controller according to the judgment result.

[0013] In some embodiments, the switching module includes a comparator, the input of which is the input of the switching module, and the output of which is the output of the switching module.

[0014] In some embodiments, a power conversion module is also included, which supplies power to the light intensity acquisition module, the controller, and the switching module.

[0015] The technical solution of this application has at least the following advantages and beneficial effects: 1. This utility model adaptively adjusts the brightness of the laser light by collecting ambient light intensity signals, which not only optimizes energy consumption but also ensures that the marking position maintains clear and appropriate brightness under different ambient light conditions, effectively avoiding glare.

[0016] 2. This utility model changes the laser output mode by switching modules. When the sunlight is off-center and the sensor cannot collect the true light intensity, it can switch to the mode where the laser light flashes at maximum brightness to ensure the visibility of the markings under different conditions. Attached Figure Description

[0017] Figure 1 This is the overall signal flow diagram of this utility model; Figure 2 This is a diagram of the laser constant current circuit of this utility model; Figure 3 This is a circuit diagram of the light intensity acquisition module of this utility model; Figure 4 This is a circuit diagram of the switching module in Example 1; Figure 5 This is the circuit diagram of the controller of this utility model; Figure 6 This is a circuit diagram of the power conversion module of this utility model; Figure 7 This is a circuit diagram of the switching module in Example 2. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] Example 1 Please refer to Figures 1-6 This utility model provides an environmentally adaptive laser output intensity control device, which is the same as the prior art. It includes a laser driving module and a laser lamp. The laser driving module includes a controller and a laser constant current module. The controller, the laser constant current module and the laser lamp are connected in sequence.

[0021] Unlike existing technologies, this device also includes a light intensity acquisition module and a switching module, with the output terminals of the light intensity acquisition module and the switching module respectively connected to the controller; The controller receives the signal from the light intensity acquisition module and outputs a first PWM signal for adjusting the laser output intensity to the laser constant current module; The controller receives the signal from the switching module and outputs a second PWM signal to the laser constant current module for adjusting the laser output mode.

[0022] It should be noted that the light intensity acquisition module is used to collect the ambient light intensity; the laser drive module is used to drive the laser lamp to emit laser light; and the switching module is used to adjust the laser output mode.

[0023] The significance of setting up a switching module in this utility model is that when the ambient light sensor cannot accurately collect data due to factors such as sunlight deviation, the laser output mode can be switched through this module to ensure the reliable operation of the system under different conditions.

[0024] In this invention, the light intensity acquisition module collects ambient light intensity data in real time and sends it to the controller. The controller adjusts the duty cycle of the first PWM signal according to the received ambient data and outputs it to the laser constant current module. The laser constant current module adaptively adjusts the intensity of the laser lamp according to the first PWM signal. When the switching module outputs a control signal to the controller, the controller outputs a second PWM signal to the laser constant current module to adjust the laser output mode.

[0025] In this embodiment, the laser constant current module receives the second PWM signal and controls the laser lamp to flash at maximum brightness.

[0026] It should be noted that the first PWM signal and the second PWM signal are output from the same output terminal of the controller.

[0027] It should be noted that the signal output by the switching module has a higher priority than the signal output by the light intensity acquisition module. That is, when the controller receives signals from both the light intensity acquisition module and the switching module at the same time, it will output the second PWM signal first.

[0028] In this embodiment, the laser constant current module includes two or more sets of laser constant current circuits, and each set of laser constant current circuits is connected to two or more laser lamps.

[0029] It should be explained that the laser constant current circuit design includes two or more groups, which can realize group control of the laser lights, such as long lines and short lines, enhancing operational flexibility. Each group of laser constant current circuits drives two or more laser lights, which can effectively disperse the heat source, increase the hardware heat dissipation space, avoid heat concentration, and thus improve the lifespan of components.

[0030] Furthermore, the laser constant current circuit includes a constant current chip, the modulation signal receiving end of the constant current chip is connected to the controller, and the output end of the constant current chip is connected to the laser lamp.

[0031] In this embodiment, the laser constant current circuit includes a constant current chip U2, diodes D5, D6, and D7, capacitors C4 and C5, inductor L1, resistors R8 and R9, and interfaces J3 and J4. The constant current chip is a PT4115.

[0032] Specifically, such as Figure 2 As shown, the anode of diode D5 is set as the VIN1 input terminal for connecting to an external power supply; the cathode of diode D5, one end of capacitor C4, one end of capacitor C5, the cathode of diode D6, one end of resistor R8, and pin 5 of constant current chip U2 are connected; the other end of resistor R8, pin 4 of constant current chip U2, and pin 1 of interface J3 are connected; the other end of capacitor C4, the other end of capacitor C5, and pin 2 of constant current chip U2 are connected and grounded; the anode of diode D6, pin 1 of constant current chip U2, and one end of inductor L1 are connected; the other end of inductor L1 is connected to pin 2 of interface J4; pin 1 of interface J4 and pin 2 of interface J3 are connected; pin 3 of constant current chip U2 is connected to the anode of diode D7; the cathode of diode D7 is connected to one end of resistor R9; the other end of resistor R9 is set as the PWM input terminal, which is connected to the controller.

[0033] It should be noted that interfaces J3 and J4 are used to connect laser lights.

[0034] The working principle of the laser constant current circuit is as follows: the PWM input terminal receives the PWM signal transmitted by the controller in real time, and the constant current chip U2 adjusts the output drive current to the laser lamp according to the PWM signal, thereby adjusting the light intensity of the laser lamp.

[0035] In this embodiment, the external power supply is 18~24V.

[0036] In this embodiment, the light intensity acquisition module includes a photodiode, a filter circuit, and a resistor. The positive terminal of the photodiode is connected to a power supply, and the negative terminal of the photodiode, one end of the filter circuit, and one end of the resistor are connected together. The other end of the resistor serves as the output terminal of the light intensity acquisition module, and the other end of the filter circuit is grounded.

[0037] Furthermore, the light intensity acquisition module includes a photodiode D1, resistors R1 and R2, and a capacitor C1. Resistor R1 and capacitor C1 form a filter circuit.

[0038] Specifically, such as Figure 3 As shown, the anode of photodiode D1 is connected to the power supply, and the cathode of photodiode D1, one end of resistor R1, one end of resistor R2, and one end of capacitor C1 are connected together. The other end of resistor R1 and the other end of capacitor C1 are connected and grounded. The other end of resistor R2 is set as the ADIN output terminal and connected to the controller.

[0039] The working principle of the light intensity acquisition module is as follows: the photodiode D1 converts the ambient light intensity into an electrical signal and transmits it to the controller.

[0040] In this embodiment, the switching module includes a button, a resistor, a capacitor, and a transient voltage suppression diode; one end of the resistor is connected to a power source, and the other end of the resistor, one end of the button, one end of the capacitor, and the cathode of the transient voltage suppression diode are connected together, and an output terminal is set here as the output terminal of the switching module; the other end of the button, the other end of the capacitor, and the anode of the transient voltage suppression diode are connected together and grounded.

[0041] Furthermore, the switching module includes a button K1, a capacitor C2, a resistor R3, and a transient voltage suppression diode D3. Resistor R3 is a pull-up resistor.

[0042] Specifically, such as Figure 4 As shown, one end of resistor R3 is connected to the power supply, and the other end of resistor R3, one end of button K1, one end of capacitor C2, and the cathode of transient voltage suppression diode D3 are connected together. The SW output terminal is set here and connected to the controller. The other end of button K1, the other end of capacitor C2, and the anode of transient voltage suppression diode D3 are connected together and grounded.

[0043] In this embodiment, the working principle of the switching module is as follows: Under normal circumstances, the other end of resistor R3 is in a high-level state. When button K1 is pressed, the circuit is turned on, and the other end of resistor R3 changes from a high level to a low level. At this time, the SW output terminal outputs a low-level signal to the controller.

[0044] In this embodiment, the controller includes a control chip U1, a capacitor C3, resistors R6 and R7, an indicator light D4, and a transient voltage suppression diode D2. Indicator light D4 is used to display the device's power-on status. The control chip is model STC8H1K08.

[0045] Specifically, such as Figure 5As shown, pin 5 of control chip U1 is set as the SW input terminal, which is connected to the SW output terminal of the switching module; pins 8 and 5 of control chip U1 and one end of capacitor C3 are connected and connected to the power supply; pin 10 of control chip U1 and the other end of capacitor C3 are connected and grounded; pin 17 of control chip U1, the cathode of transient voltage suppression diode D2, and one end of resistor R6 are connected, the other end of resistor R6 is connected to the anode of indicator light D4, the cathode of indicator light D4 and the anode of transient voltage suppression diode D3 are connected and grounded; pin 19 of control chip U1 is connected to one end of resistor R7 and a PWM output terminal is set here, which is connected to the PWM input terminal of the laser constant current circuit; the other end of resistor R7 is grounded; pin 20 of control chip U1 is set as the ADIN input terminal, which is connected to the ADIN output terminal of the light intensity acquisition module.

[0046] The controller works as follows: the ADIN input terminal of the control chip U1 collects the electrical signal representing the ambient light intensity in real time, processes the electrical signal, and outputs the first PWM signal to the laser constant current circuit through the PWM output terminal; if the SW input terminal of the control chip U1 receives a low level signal, the control chip U1 outputs the preset second PWM signal to the laser constant current circuit through the PWM output terminal.

[0047] It should be noted that the operation of the control chip U1 in processing electrical signals and outputting a preset second PWM signal is a conventional algorithm well known to those skilled in the art. The focus of this solution is the hardware circuit structure of the present invention that adjusts the brightness of the laser lamp in real time by collecting ambient light intensity signals, while the signal processing process of the control chip U1 is not the key technical point of this embodiment.

[0048] This utility model also includes a power conversion module, which supplies power to the light intensity acquisition module, the controller, and the switching module.

[0049] Furthermore, such as Figure 6 As shown, the power conversion module includes resistor R10, capacitors C6, C7, and C8, and voltage regulator chip U3.

[0050] Specifically, one end of resistor R10 is the VIN2 input terminal, used to connect to an external power supply; the other end of resistor R10, one end of capacitor C6, and pin 3 of voltage regulator chip U3 are connected; pin 1 of voltage regulator chip U3, one end of capacitor C7, and one end of capacitor C8 are connected, and this is where the power output terminal is set, which is connected to the light intensity acquisition module, the controller, and the switching module respectively; the other ends of capacitor C6, C7, and C8 are connected to pin 2 of voltage regulator chip U3 and grounded.

[0051] In this embodiment, the power conversion module is used to convert the external power supply into a 5V+ power supply.

[0052] Example 2 The difference between this embodiment and embodiment 1 is that the input end of the switching module is connected to the output end of the light intensity acquisition module. The switching module receives the signal from the light intensity acquisition module and makes a judgment, and outputs a signal to the controller according to the judgment result.

[0053] In this embodiment, the switching module includes a comparator, the input of which is the input of the switching module, and the output of which is the output of the switching module.

[0054] Furthermore, the switching module includes comparator U4, resistors R3, R4, R5, and capacitor C9.

[0055] Specifically, such as Figure 7 As shown, one end of resistor R5 is set as the ADIN2 input terminal, which is connected to the ADIN output terminal of the light intensity acquisition module; the other end of resistor R5, one end of capacitor C9, and pin 2 of comparator U4 are connected; pin 4 of comparator U4 is connected to one end of resistor R3 and connected to the power supply; the other end of resistor R3, pin 3 of comparator U4, and one end of resistor R4 are connected; the other end of resistor R4, the other end of capacitor C9, and pin 5 of comparator U4 are connected and grounded; pin 1 of comparator U4 is set as the SW2 output terminal, which is connected to the SW input terminal of the controller.

[0056] In this embodiment, the switching module works as follows: the switching module collects and compares light intensity signals in real time. When the light intensity exceeds a threshold, the SW2 output terminal of the switching module outputs a low-level signal to the SW input terminal of the controller, and the controller outputs a second PWM signal to the laser constant current module. The advantage of this design is that the switching module can adaptively adjust the laser output mode according to the ambient light intensity.

[0057] It should be noted that all the electronic devices mentioned in the above embodiments are available in domestic and international markets.

[0058] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A device for environmentally adaptive laser output intensity control, comprising a laser driving module and a laser lamp, wherein the laser driving module includes a controller and a laser constant current module, and the controller, the laser constant current module, and the laser lamp are connected in sequence; characterized in that: It also includes a light intensity acquisition module and a switching module, the output terminals of the light intensity acquisition module and the switching module being connected to the controller, respectively; The controller receives the signal from the light intensity acquisition module and outputs a first PWM signal for adjusting the laser output intensity to the laser constant current module; The controller receives the signal from the switching module and outputs a second PWM signal to the laser constant current module for adjusting the laser output mode.

2. The device for environmentally adaptive laser output intensity control according to claim 1, characterized in that, The laser constant current module includes two or more sets of laser constant current circuits, and each set of laser constant current circuits is connected to two or more laser lamps.

3. The device for environmentally adaptive laser output intensity control according to claim 2, characterized in that, The laser constant current circuit includes a constant current chip, the modulation signal receiving end of the constant current chip is connected to the controller, and the output end of the constant current chip is connected to the laser lamp.

4. The device for environmentally adaptive laser output intensity control according to claim 3, characterized in that, The constant current chip is model PT4115.

5. The device for environmentally adaptive laser output intensity control according to claim 1, characterized in that, The light intensity acquisition module includes a photodiode, a filter circuit, and a resistor. The positive terminal of the photodiode is connected to a power supply. The negative terminal of the photodiode, one end of the filter circuit, and one end of the resistor are connected together. The other end of the resistor serves as the output terminal of the light intensity acquisition module, and the other end of the filter circuit is grounded.

6. The device for environmentally adaptive laser output intensity control according to claim 1, characterized in that, The switching module includes a button, a resistor, a capacitor, and a transient voltage suppression diode; one end of the resistor is connected to a power source, and the other end of the resistor, one end of the button, one end of the capacitor, and the cathode of the transient voltage suppression diode are connected together, with an output terminal set at this location as the output terminal of the switching module; the other end of the button, the other end of the capacitor, and the anode of the transient voltage suppression diode are connected together and grounded.

7. The device for environmentally adaptive laser output intensity control according to claim 1, characterized in that, The input terminal of the switching module is connected to the output terminal of the light intensity acquisition module. The switching module receives the signal from the light intensity acquisition module and makes a judgment, and outputs a signal to the controller according to the judgment result.

8. The device for environmentally adaptive laser output intensity control according to claim 7, characterized in that, The switching module includes a comparator, the input of which is the input of the switching module, and the output of which is the output of the switching module.

9. The device for environmentally adaptive laser output intensity control according to claim 1, characterized in that, It also includes a power conversion module, which supplies power to the light intensity acquisition module, the controller, and the switching module.

Images