Light-emitting control device and fiber laser

Abstract

The utility model discloses a light-emitting control device and an optical fiber laser. The device comprises a power supply control module, a driving enabling module, a light emitting driving module and a driving control module, the external power supply module is electrically connected with the input end of the light-emitting module through the power supply control module; the output end of the light-emitting module is electrically connected with the output end of the light-emitting driving module; the power supply control module outputs a power signal according to a power mode signal output by the external power module; the driving enabling module is electrically connected with the input end of the light-emitting driving module; the driving enabling module outputs a driving enabling signal to the light emitting driving module according to the control instruction; the driving control module is electrically connected with the input end of the light-emitting driving module; the driving control module outputs a driving voltage signal to the light-emitting driving module; the light-emitting driving module outputs a light-emitting control signal to the light-emitting module according to the driving enable signal and the driving voltage signal.

Description

Technical Field

[0001] This utility model relates to the field of light emission control, and more particularly to a light emission control device and a fiber laser. Background Technology

[0002] Light-emitting modules are widely used in industrial processing, communications, medical and scientific research fields. Light-emitting modules can usually achieve light indication through light-emitting control circuits and provide feedback to users through indicator lights or other visual signals.

[0003] Existing light-emitting control circuits have the following technical problems:

[0004] Light leakage can occur during the power-on or power-off process of the LED module. In particular, the market trend for marking LED modules is towards miniaturization, necessitating improvements to reduce module size. Correspondingly, the LED module's emission current also decreases. When using low-current LED modules, vulnerabilities in the power-on / off control logic make light leakage particularly noticeable, resulting in a poor user experience when using LED modules for marking. Utility Model Content

[0005] This utility model provides a light emission control device and a fiber laser, which effectively solves the problem of light leakage during power-on or power-off of the light emission module, based on normal light emission control.

[0006] To achieve the above objectives, this utility model provides a light-emitting control device, which includes: a power supply control module, a drive enable module, a light-emitting drive module, and a drive control module.

[0007] The input terminal of the power supply control module is electrically connected to the external power supply module; the output terminal of the power supply control module is electrically connected to the input terminal of the light-emitting module; the output terminal of the light-emitting module is electrically connected to the output terminal of the light-emitting driving module; the power supply control module is used to output a power signal to the light-emitting module according to the power mode signal output by the power supply module.

[0008] The drive enable module is electrically connected to the input terminal of the light-emitting drive module; the drive enable module is used to output a drive enable signal to the light-emitting drive module.

[0009] The drive control module is electrically connected to the input terminal of the light-emitting drive module; the drive control module is used to output a drive voltage signal to the light-emitting drive module.

[0010] The light-emitting driving module is used to output a light-emitting control signal to the light-emitting module according to the driving enable signal and the driving voltage signal.

[0011] Optionally, the power supply control module includes a power supply control signal output unit and a power supply control unit;

[0012] The input terminal of the power supply control signal output unit is electrically connected to the external power module, and the output terminal of the power supply control signal output unit is electrically connected to the control terminal of the power supply control unit; the power supply control signal output unit is used to output a power supply start signal to the power supply control unit according to the power mode signal output by the external power module.

[0013] The input terminal of the power supply control unit is electrically connected to the external power module, and the output terminal of the power supply control unit is electrically connected to the input terminal of the light-emitting module; the power supply control unit is used to convert the power mode signal into the power signal according to the power supply start signal.

[0014] Optionally, the device may also include: a voltage feedback module;

[0015] The input terminal of the voltage feedback module is electrically connected to the first output terminal of the light-emitting driving module; the second output terminal of the light-emitting driving module is electrically connected to the output terminal of the light-emitting module; and the output terminal of the voltage feedback module is electrically connected to the input terminal of the drive control module.

[0016] The voltage feedback module is used to convert the real-time light-emitting current signal flowing through the light-emitting module into a real-time voltage signal and feed it back to the drive control module when the light-emitting drive module outputs the light-emitting control signal; the drive control module is also used to adjust the drive voltage signal in real time according to the real-time voltage signal and the reference voltage signal.

[0017] Optionally, the power supply control signal output unit includes a first resistor, a second resistor, and a first transistor;

[0018] The first end of the first resistor serves as the input end of the power supply control signal output unit and is electrically connected to the external power supply module; the second end of the first resistor is electrically connected to the first end of the second resistor and the control end of the first transistor; the second end of the second resistor and the second end of the first transistor are grounded; the first end of the first transistor serves as the output end of the power supply control signal output unit.

[0019] The power supply control unit includes a third resistor, a fourth resistor, and a second transistor;

[0020] The first end of the third resistor serves as the input terminal of the power supply control unit and is electrically connected to the external power module and the first end of the second transistor; the second end of the third resistor serves as the control terminal of the power supply control unit and is electrically connected to the first end of the fourth resistor and the control terminal of the second transistor; the second end of the fourth resistor is grounded; and the second end of the second transistor serves as the output terminal of the power supply control unit.

[0021] Optionally, the drive control module includes: a reference voltage circuit, an operational amplifier chip, an integrator circuit, a differentiator circuit, and a power supply filter circuit;

[0022] The positive input terminal of the operational amplifier chip is electrically connected to the reference voltage circuit; the inverting input terminal of the operational amplifier chip is electrically connected to the output terminal of the operational amplifier chip through the integrating circuit.

[0023] The output terminal of the operational amplifier chip is electrically connected to the input terminal of the differentiating circuit; the output terminal of the differentiating circuit is electrically connected to the input terminal of the light-emitting driving module; the power supply terminal of the operational amplifier chip is electrically connected to a voltage source through the power supply filtering circuit.

[0024] Optionally, the reference voltage circuit includes: a fifth resistor and a sixth resistor;

[0025] The first terminal of the fifth resistor is electrically connected to the voltage source; the second terminal of the fifth resistor is electrically connected to the first terminal of the sixth resistor; the second terminal of the sixth resistor is grounded; and the second terminal of the fifth resistor is electrically connected to the positive input terminal of the operational amplifier chip.

[0026] Optionally, the integrating circuit includes a seventh resistor and a first capacitor; the differentiating circuit includes an eighth resistor and a second capacitor; and the power supply filtering circuit includes a third capacitor, a fourth capacitor, and a first inductor.

[0027] The first end of the seventh resistor is electrically connected to the inverting input terminal of the operational amplifier chip; the second end of the seventh resistor is electrically connected to the first end of the first capacitor; the second end of the first capacitor is electrically connected to the output terminal of the operational amplifier chip.

[0028] The first end of the eighth resistor and the first end of the second capacitor are both electrically connected to the output terminal of the operational amplifier chip; the second end of the eighth resistor and the second end of the second capacitor are electrically connected to the input terminal of the light-emitting driving module.

[0029] The first terminal of the third capacitor, the first terminal of the fourth capacitor, and the first terminal of the first inductor are all electrically connected to the power supply terminal of the operational amplifier chip; the second terminal of the third capacitor and the second terminal of the fourth capacitor are grounded; and the second terminal of the first inductor is electrically connected to a voltage source.

[0030] Optionally, the voltage feedback module includes: a tenth resistor and an eleventh resistor;

[0031] The first end of the tenth resistor serves as the input terminal of the voltage feedback module and is electrically connected to the first output terminal of the light-emitting driving module; the second end of the tenth resistor is grounded; the first end of the tenth resistor is also electrically connected to the first end of the eleventh resistor; the second end of the eleventh resistor serves as the output terminal of the voltage feedback module and is electrically connected to the input terminal of the driving control module.

[0032] Optionally, the drive enable module includes a third transistor and a pull-up resistor; the light-emitting drive module includes a fourth transistor.

[0033] The first terminal of the third transistor serves as the output terminal of the drive enable module and is electrically connected to the control terminal of the fourth transistor; the second terminal of the third transistor is grounded; the control terminal of the third transistor is electrically connected to the first terminal of the pull-up resistor; the control terminal of the third transistor is used to receive control commands; the second terminal of the pull-up resistor is electrically connected to a voltage source.

[0034] The first terminal of the fourth transistor is electrically connected to the first terminal of the tenth resistor; the second terminal of the fourth transistor is electrically connected to the output terminal of the light-emitting module.

[0035] Secondly, this utility model embodiment also provides a fiber laser, which includes the light emission control device and light emission module described in the first aspect; the light emission module includes the fiber laser body.

[0036] In this embodiment of the invention, when the external power module is in the process of power-on or power-off, the control command received by the drive enable module is an uncontrollable light-emitting command due to uncontrollable factors. The drive enable module then outputs a drive enable signal to the light-emitting drive module; the drive control module outputs a drive voltage signal to the light-emitting drive module; and the light-emitting drive module outputs a light-emitting control signal according to the drive enable signal and the drive voltage signal. At this time, since the external power module is in the process of power-on or power-off, the power supply control module cannot output a power signal to the light-emitting module according to the power-on / off power mode signal output by the external power module. Therefore, the light-emitting module is in a non-light-emitting state, thus avoiding the problem of light leakage from the light-emitting module during the power-on or power-off process of the external power module.

[0037] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a structural block diagram of a light-emitting control device provided in an embodiment of the present utility model;

[0040] Figure 2 This is a schematic diagram of the specific structure of a light-emitting control device provided in an embodiment of the present utility model;

[0041] Figure 3 This is a schematic diagram of the specific structure of another light-emitting control device provided in this embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the specific structure of another light-emitting control device provided in this embodiment of the utility model;

[0043] Figure 5 This is a schematic diagram of the specific structure of another light-emitting control device provided in this embodiment of the utility model;

[0044] Figure 6 This is a schematic diagram of the specific structure of another light-emitting control device provided in this embodiment of the utility model;

[0045] Figure 7 This is a schematic diagram of the specific structure of another light-emitting control device provided in this embodiment of the present invention.

[0046] Explanation of reference numerals in the attached diagram: 10, Power supply control module; 11, Power supply control signal output unit; 12, Power supply control unit; 20, Drive enable module; 30, Drive control module; 31, Reference voltage circuit; 32, Operational amplifier chip; 33, Integrator circuit; 34, Differentiator circuit; 35, Power supply filter circuit; 40, Light emission drive module; 50, Voltage feedback module. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0049] Figure 1 This is a structural block diagram of a light-emitting control device provided in an embodiment of this utility model, as shown below. Figure 1 As shown, the device includes: a power supply control module 10, a drive enable module 20, a drive control module 30, and a light-emitting drive module 40; the input terminal of the power supply control module 10 is electrically connected to an external power supply module; the output terminal of the power supply control module 10 is electrically connected to the input terminal of the light-emitting module D; the output terminal of the light-emitting module D is electrically connected to the output terminal of the light-emitting drive module 40; the power supply control module 10 is used to output a power signal to the light-emitting module D according to the power mode signal output by the external power supply module.

[0050] The drive enable module 20 is electrically connected to the input terminal of the light-emitting drive module 40; the drive enable module 20 is used to output a drive enable signal to the light-emitting drive module 40 according to the control command; the drive control module 30 is electrically connected to the input terminal of the light-emitting drive module 40; the drive control module 30 is used to output a drive voltage signal to the light-emitting drive module 40; the light-emitting drive module 40 is used to output a light-emitting control signal according to the drive enable signal and the drive voltage signal.

[0051] The power mode signals include: a stable power mode signal and a power-on / off power mode signal; the stable power mode signal is a stable power signal VCC1 output by the external power module; the power-on / off power mode signal is when the external power module is in the power-on process (i.e., the power signal VCC1 of the external power module gradually increases from 0 to 1) or the power-off process (i.e., the power signal VCC1 of the external power module gradually decreases from 1 to 0); specifically, the power supply control module 10 can output the power signal VCC1 to the light-emitting module D according to the stable power mode signal output by the external power module; the power supply control module 10 cannot output the power signal VCC1 to the light-emitting module D according to the power-on / off power mode signal output by the external power module.

[0052] The control commands include light-emitting commands, no-light-emitting commands, and uncontrollable light-emitting commands. The light-emitting and no-light-emitting commands are I / O commands under stable power supply from the external power module. The uncontrollable light-emitting commands are I / O commands under power-on and power-off conditions of the external power module. Specifically, when the drive enable module 20 receives a light-emitting command, it outputs a drive enable signal to the light-emitting drive module 40. When the drive enable module 20 receives a no-light-emitting command, it does not output a drive enable signal. When the drive enable module 20 receives an uncontrollable light-emitting command, it also outputs a drive enable signal.

[0053] The light-emitting module D can be an indicator light to be emitted; the indicator light to be emitted can be various light sources such as red light source and blue light source. In this embodiment, the light-emitting type of the light-emitting module D is not specifically limited; the light-emitting module D can be a high-current indicator light or a low-current indicator light. In this embodiment, the operating current of the light-emitting module D is not specifically limited.

[0054] In this embodiment, the normal light-emitting control process of the light-emitting control device is as follows: when the control command is a light-emitting command, the drive enable module 20 outputs a drive enable signal to the light-emitting drive module 40; the drive control module 30 outputs a drive voltage signal to the light-emitting drive module 40; the light-emitting drive module 40 outputs a light-emitting control signal according to the drive enable signal and the drive voltage signal; at this time, the external power supply module provides stable power supply, and the power supply control module 10 outputs a power signal VCC1 according to the stable power mode signal output by the external power supply module; then the light-emitting module D outputs a light-emitting current signal under the light-emitting control signal and the power signal VCC1, thereby making the light-emitting module D in a light-emitting state;

[0055] When the control command is a non-light-emitting command, the drive enable module 20 does not output a drive enable signal; the drive control module 30 outputs a drive voltage signal to the light-emitting drive module 40; correspondingly, the light-emitting drive module 40 cannot output a light-emitting control signal because it cannot receive the drive enable signal; the external power supply module provides stable power supply, and the power supply control module 10 outputs a power signal VCC1 according to the stable power mode signal output by the external power supply module; since the light-emitting module D cannot receive the light-emitting control signal at this time, but can receive the power signal VCC1, the light-emitting module D is in a non-light-emitting state, thus ensuring the normal use of the control function.

[0056] It should be noted that, in this embodiment, while ensuring normal light emission control, when the external power module is in the process of power-on or power-off, the control command received by the drive enable module 20 is affected by uncontrollable factors and becomes an uncontrollable light emission command. The drive enable module 20 then outputs a drive enable signal to the light emission drive module 40; the drive control module 30 outputs a drive voltage signal to the light emission drive module 40; and the light emission drive module 40 outputs a light emission control signal based on the drive enable signal and the drive voltage signal. At this time, because the external power module is in the process of power-on or power-off, the power supply control module 10 cannot output the power signal VCC1 based on the power-on / off power mode signal output by the external power module. Even if the light emission module D receives the light emission control signal, it remains in a non-light emission state because it cannot obtain the power signal. Thus, the power supply control module 10 effectively avoids the problem of light leakage from the light emission module during the power-on or power-off process of the external power module. Furthermore, the power supply control module 10 performs power supply control in hardware, eliminating the need for software control and improving control reliability.

[0057] Optionally, based on the above embodiments, the power supply control module 10 can be further refined. Figure 2 This is a schematic diagram of the specific structure of a light-emitting control device provided in an embodiment of this utility model; as shown below. Figure 2 As shown, the power supply control module 10 includes a power supply control signal output unit 11 and a power supply control unit 12. The input terminal of the power supply control signal output unit 11 is electrically connected to the external power module; the output terminal of the power supply control signal output unit 11 is electrically connected to the control terminal of the power supply control unit 12; the input terminal of the power supply control unit 12 is electrically connected to the external power module; the output terminal of the power supply control unit 12 is electrically connected to the input terminal of the light-emitting module D. The power supply control signal output unit 11 is used to output a power supply start signal to the power supply control unit 12 according to the power mode signal output by the external power module; the power supply control unit 12 is used to convert the power mode signal into a power signal VCC1 according to the power supply start signal. Specifically, when the external power module outputs a stable power supply mode signal, the power supply control signal output unit 11 outputs an enable level signal as the power supply start signal, and the power supply control unit 12 outputs the power signal VCC1; when the external power module outputs a power-on / off mode signal, the power supply control signal output unit 11 outputs a non-enable level signal as the power supply start signal, and the power supply control unit 12 cannot output the power signal VCC1.

[0058] The following section describes each unit in the power supply control module using a specific circuit diagram. Figure 3 This is a schematic diagram of another light-emitting control device provided in an embodiment of this utility model; as shown. Figure 3As shown, the power supply control signal output unit 11 includes a first resistor R1, a second resistor R2, and a first transistor Q1; the first end of the first resistor R1 serves as the input end of the power supply control signal output unit 11 and is electrically connected to an external power supply module; the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2 and the control end of the first transistor Q1; the second end of the second resistor R2 and the second end of the first transistor Q1 are grounded; the first end of the first transistor Q1 serves as the output end of the power supply control signal output unit 11.

[0059] Optional, continue to refer to Figure 3 The power supply control unit 12 includes a third resistor R3, a fourth resistor R4, and a second transistor Q2. The first end of the third resistor R3 serves as the input terminal of the power supply control unit 12 and is electrically connected to the external power supply module and the first end of the second transistor Q2. The second end of the third resistor R3 serves as the control terminal of the power supply control unit 12 and is electrically connected to the first end of the fourth resistor R4 and the control terminal of the second transistor Q2. The second end of the fourth resistor R4 is grounded. The second end of the second transistor Q2 serves as the output terminal of the power supply control unit 12.

[0060] Specifically, when the external power module outputs a stable power mode signal, i.e., the external power module outputs a stable power signal VCC1, the power signal VCC1 is divided by the first resistor R1 and the second resistor R2 and then output to the control terminal of the first transistor Q1, turning on the first transistor Q1. When the first transistor Q1 is turned on, it pulls down the potential of the control terminal of the second transistor Q2, thereby turning on the second transistor Q2. In this way, the power signal VCC1 can be directly output to the input terminal of the light-emitting module D. At this time, if the drive enable module 20 receives a light-emitting command and the drive control module 30 issues a control command, the light-emitting drive module 40 can output a light-emitting control signal, and the light-emitting module D is in a light-emitting state. When the drive enable module 20 receives a non-light-emitting command, the light-emitting drive module 40 cannot output a light-emitting control signal, and the light-emitting module D is in a non-light-emitting state.

[0061] When the external power module outputs a power-on / off mode signal, the power signal VCC1 of the power module gradually decreases from 1 to 0, or gradually increases from 0 to 1. This causes the voltage of the power signal VCC1 after being divided by the first resistor R1 and the second resistor R2 to be less than the conduction voltage of the first transistor Q1, and the first transistor Q1 is turned off. When the first transistor Q1 is turned off, the control terminal of the second transistor Q2 is kept at a high potential due to the voltage division by the third resistor R3 and the fourth resistor R4, so the second transistor Q2 is turned off. Thus, the power signal VCC1 cannot be output to the input terminal of the light-emitting module D. At this time, when the external power module outputs a power-on / off mode signal, the light-emitting drive module 40 outputs a light-emitting control signal according to the drive enable signal and the drive voltage signal. Since the power signal VCC1 cannot be obtained, it is in a non-light-emitting state, thus avoiding the problem of fiber laser leakage during the power-on or power-off process of the external power module in the existing light-emitting control device.

[0062] Optionally, based on the above embodiments, the drive control module 30 can be further refined. Figure 4 This is a schematic diagram of another light-emitting control device provided in an embodiment of this utility model; as shown. Figure 4 As shown, the drive control module 30 includes: a reference voltage circuit 31, an operational amplifier chip 32, an integrator circuit 33, a differentiator circuit 34, and a power supply filter circuit 35; the positive input terminal of the operational amplifier chip 32 is electrically connected to the reference voltage circuit 31; the inverting input terminal of the operational amplifier chip 32 is electrically connected to the output terminal of the operational amplifier chip 32 through the integrator circuit 33; the output terminal of the operational amplifier chip 32 is electrically connected to the input terminal of the differentiator circuit 34; the output terminal of the differentiator circuit 34 is electrically connected to the input terminal of the light-emitting drive module 40; the power supply terminal of the operational amplifier chip 32 is electrically connected to the voltage source VCC2 through the power supply filter circuit 35.

[0063] When the voltage source VCC2 provides a stable power supply voltage VCC2 to the operational amplifier chip 32 through the power supply filter circuit 35, the operational amplifier chip 32 can output a drive voltage signal to the light-emitting drive module 40 based on the difference between the reference voltage signal output by the reference voltage circuit 31 and the voltage signal input at the inverting input terminal. The integrator circuit 33 can control the rise time waveform of the drive voltage signal, which can effectively control the response time of the drive voltage signal output. The differentiator circuit 34 can effectively eliminate the waveform oscillation of the drive voltage signal, so that the drive voltage signal output is stable. Thus, the drive control module composed of the reference voltage circuit 31, the operational amplifier chip 32, the integrator circuit 33, the differentiator circuit 34 and the power supply filter circuit 35 can provide a stable drive voltage signal.

[0064] Optionally, based on the above embodiments, the light emission control device further includes: a voltage feedback module 50; Figure 5This is a schematic diagram of another light-emitting control device provided in an embodiment of this utility model; as shown. Figure 5 As shown, the input terminal of the voltage feedback module 50 is electrically connected to the first output terminal of the light-emitting driving module 40; the second output terminal of the light-emitting driving module 40 is electrically connected to the output terminal of the light-emitting module D; the output terminal of the voltage feedback module 50 is electrically connected to the input terminal of the drive control module 30 (specifically, the inverting input terminal of the operational amplifier chip 32); the voltage feedback module 50 is used to convert the real-time light-emitting current signal flowing through the light-emitting module D into a real-time voltage signal and feed it back to the drive control module 30 (specifically, the inverting input terminal of the operational amplifier chip 32) when the light-emitting driving module 40 outputs a light-emitting control signal; the drive control module 30 is also used to adjust the drive voltage signal in real time according to the real-time voltage signal and the reference voltage signal.

[0065] Specifically, when the real-time luminous current signal flowing through the light-emitting module D is small, the real-time voltage signal is also small. The operational amplifier chip 32 in the drive control module 30 adjusts the output of a larger drive voltage signal according to the real-time voltage signal and the reference voltage signal, thereby increasing the luminous current signal output through the light-emitting module D. When the real-time luminous current signal flowing through the light-emitting module D is large, the real-time voltage signal is also large. The operational amplifier chip 32 adjusts the output of a smaller drive voltage signal according to the real-time voltage signal and the reference voltage signal, thereby decreasing the luminous current signal output through the light-emitting module D. In this way, the luminous current signal of the light-emitting module D becomes a constant current luminous signal. This achieves constant current control of the light-emitting module while ensuring normal luminous control and avoiding power-on / off leakage.

[0066] The following description, using specific circuit diagrams, explains the drive control module 30, drive enable module 20, light-emitting drive module 40, and voltage feedback module 50. Figure 6 This is a schematic diagram of another light-emitting control device provided in an embodiment of this utility model; as shown. Figure 6 As shown, the reference voltage circuit 31 includes: a fifth resistor R5 and a sixth resistor R6; the first terminal of the fifth resistor R5 is electrically connected to the voltage source VCC2; the second terminal of the fifth resistor R5 is electrically connected to the first terminal of the sixth resistor R6; the second terminal of the sixth resistor R6 is grounded; and the second terminal of the fifth resistor R5 is electrically connected to the positive input terminal of the operational amplifier chip 32. The reference voltage can be set according to the theoretical operating current of the light-emitting module using the fifth resistor R5 and the sixth resistor R6.

[0067] Optional, continue to refer to Figure 6The integrating circuit 33 includes a seventh resistor R7 and a first capacitor C1; the differentiating circuit 34 includes an eighth resistor R8 and a second capacitor C2; the power supply filtering circuit 35 includes a third capacitor C3, a fourth capacitor C4, and a first inductor L1; the first end of the seventh resistor R7 is electrically connected to the inverting input terminal of the operational amplifier chip 32; the second end of the seventh resistor R7 is electrically connected to the first end of the first capacitor C1; the second end of the first capacitor C1 is electrically connected to the output terminal of the operational amplifier chip 32; the first ends of the eighth resistor R8 and the second capacitor C2 are both electrically connected to the output terminal of the operational amplifier chip 32; the second ends of the eighth resistor R8 and the second capacitor C2 are electrically connected to the input terminal of the light-emitting driving module 40; the first ends of the third capacitor C3, the fourth capacitor C4, and the first inductor L1 are all electrically connected to the power supply terminal of the operational amplifier chip 32; the second ends of the third capacitor C3 and the fourth capacitor C4 are grounded; the second end of the first inductor L1 is electrically connected to the voltage source VCC2. Among them, the third capacitor C3, the fourth capacitor C4 and the first inductor L1 can provide a stable power supply voltage VCC2 for the operational amplifier chip 32; the seventh resistor R7 and the first capacitor C1 can control the rise time waveform of the drive voltage signal; the eighth resistor R8 and the second capacitor C2 can effectively eliminate the waveform oscillation of the drive voltage signal; the operational amplifier chip 32 can output a drive voltage signal to the light-emitting drive module 40 based on the difference between the reference voltage signal output by the voltage divider of the fifth resistor R5 and the sixth resistor R6 and the voltage signal input at the inverting input terminal.

[0068] Optional, continue to refer to Figure 6 The voltage feedback module 50 includes a tenth resistor R10 and an eleventh resistor R11. The first end of the tenth resistor R10 serves as the input end of the voltage feedback module 50 and is electrically connected to the first output end of the light-emitting driving module 40. The second end of the tenth resistor R10 is grounded. The first end of the tenth resistor R10 is electrically connected to the first end of the eleventh resistor R11. The second end of the eleventh resistor R11 serves as the output end of the voltage feedback module 50 and is electrically connected to the inverting input end of the operational amplifier chip 32.

[0069] Optional, continue to refer to Figure 6 The drive enable module 20 includes a third transistor Q3 and a pull-up resistor R'; the light-emitting drive module 40 includes a fourth transistor Q4; the first terminal of the third transistor Q3 serves as the output terminal of the drive enable module 20 and is electrically connected to the control terminal of the fourth transistor Q4; the second terminal of the third transistor Q3 is grounded; the control terminal of the third transistor Q3 is electrically connected to the first terminal of the pull-up resistor R'; the control terminal of the third transistor Q3 is used to receive control commands; the second terminal of the pull-up resistor R' is electrically connected to the voltage source VCC2; the first terminal of the fourth transistor Q4 is grounded through the first terminal of the tenth resistor R10; the second terminal of the fourth transistor Q4 is electrically connected to the output terminal of the light-emitting module D.

[0070] Specifically, when the control terminal of the third transistor Q3 receives a light-emitting command, the light-emitting command is a low-level signal, the third transistor Q3 is turned off, and the first terminal of the third transistor Q3 remains at a high-level signal. At the same time, the operational amplifier chip 32 outputs a high-level driving voltage signal, so the fourth transistor Q4 is turned on. At this time, when the power supply control module 10 outputs a stable power mode signal from the internal and external power supply modules, the first transistor Q1 is turned on and the second transistor Q2 is turned on. In this way, the power supply signal VCC1 can be directly output to the light-emitting module D, so the light-emitting module D is in the light-emitting state. During the process of the light-emitting module D being in the light-emitting state, the tenth resistor R10 can convert the light-emitting current signal flowing through the light-emitting module D into a real-time voltage signal, which is fed back to the operational amplifier chip 32 through the eleventh resistor R11. The operational amplifier chip 32 can adjust the driving voltage signal in real time according to the real-time voltage signal and the reference voltage signal, thus realizing the constant current control of the light-emitting module D.

[0071] When the control command is a non-light-emitting command, the operational amplifier chip 32 still outputs a high-level drive voltage signal. At this time, the third transistor Q3 receives the high-level signal and turns on. The first terminal of the third transistor Q3 is pulled low, which causes the control terminal potential of the fourth transistor Q4 to be pulled low, thus turning off the fourth transistor Q4. At this time, when the power supply control module 10 outputs a stable power supply mode signal, the first transistor Q1 turns on and the second transistor Q2 turns on, so that the power supply signal VCC can be directly output to the light-emitting module D. Since the fourth transistor Q4 is turned off, the light-emitting module D is in a non-light-emitting state.

[0072] When the external power supply module outputs a power-on / off power mode signal, the control command received by the control terminal of the third transistor Q3 is an uncontrollable low-level signal, and the third transistor Q3 is turned off. Therefore, the first terminal of the third transistor Q3 remains at a high level. Simultaneously, the operational amplifier chip 32 outputs a high-level drive voltage signal, thus turning on the fourth transistor Q4. Since the first transistor Q1 and the second transistor Q2 are both turned off at this time, the power signal VCC1 cannot be output to the input terminal of the light-emitting module D. Thus, the light-emitting module D is in a non-emitting state, thereby avoiding the problem of fiber laser leakage during power-on or power-off in existing light-emitting control devices.

[0073] It should be noted that in this embodiment, the conduction of the fourth transistor Q4 depends on the signal output from the first terminal of the independent third transistor Q3 and the signal output from the output terminal of the operational amplifier chip 32. This avoids the situation in the prior art where the first terminal of the third transistor Q3 is directly connected to the positive input terminal of the operational amplifier chip 32, so that the signal output from the output terminal of the operational amplifier chip 32 directly affects the conduction of the fourth transistor Q4. This avoids the operational amplifier chip 32 from generating an offset voltage that causes it to change from a non-light-emitting state to a light-emitting state.

[0074] Optionally, in some other embodiments, the drive control module 30 may further include a twelfth resistor R12 and a thirteenth resistor R13. Figure 7 This is a schematic diagram of another light-emitting control device provided in an embodiment of this utility model; as shown. Figure 7 As shown, the first terminal of the twelfth resistor R12 is electrically connected to the control terminal of the fourth transistor Q4; the second terminal of the twelfth resistor R12 is electrically connected to the first terminal of the tenth resistor R10; the inverting input terminal of the operational amplifier chip 32 is connected to the voltage source VCC2 through the thirteenth resistor R13 and the first inductor L1. The twelfth resistor R12, together with the eighth resistor R8, forms a voltage divider to provide a drive voltage to the fourth transistor Q4, thus providing an adjustable upper limit range for the drive voltage signal. The thirteenth resistor R13 acts as a bias, ensuring that in normal power supply mode, when no light is emitted, the voltage at the inverting input terminal of the operational amplifier is slightly higher than that at the non-inverting input terminal, resulting in a low-voltage output signal from the operational amplifier.

[0075] Optional, continue to refer to Figure 7 The power supply control unit 12 further includes a third capacitor C3; the power supply control signal output unit 11 further includes a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6; the third capacitor C3 is connected in parallel with the second resistor R2; the first terminal of the fourth capacitor C4 is electrically connected to the first terminal of the second transistor Q2; the second terminal of the fourth capacitor C4 is electrically connected to the control terminal of the second transistor Q2; the first terminals of the fifth capacitor C5 and the sixth capacitor C6 are both electrically connected to the second terminal of the second transistor Q2; the second terminals of the fifth capacitor C5 and the sixth capacitor C6 are both grounded. The third capacitor C3 filters the signal after voltage division by the first and second resistors; the fourth capacitor C4 filters the output signal from the first terminal of the first transistor Q1; and the fifth capacitor C5 and the sixth capacitor C6 filter the output signal from the second terminal of the second transistor.

[0076] Optional, continue to refer to Figure 7The drive enable module 20 also includes a seventh capacitor C7; the first terminal of the seventh capacitor C7 is electrically connected to the first terminal of the third transistor Q3; the second terminal of the seventh capacitor C7 is electrically connected to the second terminal of the third transistor Q3; wherein, the seventh capacitor C7 plays the role of filtering the output signal of the first terminal of the third transistor Q3.

[0077] Based on the same inventive concept, this utility model embodiment also provides a fiber laser, which includes the light-emitting control device and light-emitting module described in the above embodiments; the light-emitting module includes the fiber laser body. Since the fiber laser includes the light-emitting control device described in the above embodiments and also possesses the beneficial effects of the above embodiments, further details are omitted here.

[0078] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A light-emitting control device, characterized in that, include: Power supply control module, drive enable module, light-emitting drive module and drive control module; The input terminal of the power supply control module is electrically connected to the external power supply module; The output terminal of the power supply control module is electrically connected to the input terminal of the light-emitting module; the output terminal of the light-emitting module is electrically connected to the output terminal of the light-emitting driving module; the power supply control module is used to output a power signal to the light-emitting module according to the power mode signal output by the power supply module. The drive enable module is electrically connected to the input terminal of the light-emitting drive module; the drive enable module is used to output a drive enable signal to the light-emitting drive module according to the control command. The drive control module is electrically connected to the input terminal of the light-emitting drive module; The drive control module is used to output a drive voltage signal to the light-emitting drive module; The light-emitting driving module is used to output a light-emitting control signal to the light-emitting module according to the driving enable signal and the driving voltage signal.

2. The light-emitting control device according to claim 1, characterized in that, The power supply control module includes a power supply control signal output unit and a power supply control unit; The input terminal of the power supply control signal output unit is electrically connected to the external power module, and the output terminal of the power supply control signal output unit is electrically connected to the control terminal of the power supply control unit; the power supply control signal output unit is used to output a power supply start signal to the power supply control unit according to the power mode signal output by the external power module. The input terminal of the power supply control unit is electrically connected to the external power module, and the output terminal of the power supply control unit is electrically connected to the input terminal of the light-emitting module. The power supply control unit is used to convert the power mode signal into the power signal according to the power supply start signal.

3. The light-emitting control device according to claim 1, characterized in that, Also includes: Voltage feedback module; The input terminal of the voltage feedback module is electrically connected to the first output terminal of the light-emitting driving module; the second output terminal of the light-emitting driving module is electrically connected to the output terminal of the light-emitting module; and the output terminal of the voltage feedback module is electrically connected to the input terminal of the drive control module. The voltage feedback module is used to convert the real-time light-emitting current signal flowing through the light-emitting module into a real-time voltage signal and feed it back to the driving control module when the light-emitting driving module outputs the light-emitting control signal. The drive control module is also used to adjust the drive voltage signal in real time based on the real-time voltage signal and the reference voltage signal.

4. The light-emitting control device according to claim 2, characterized in that, The power supply control signal output unit includes a first resistor, a second resistor, and a first transistor; The first end of the first resistor serves as the input terminal of the power supply control signal output unit and is electrically connected to the external power supply module; the second end of the first resistor is electrically connected to the first end of the second resistor and the control terminal of the first transistor; the second end of the second resistor and the second end of the first transistor are grounded; the first end of the first transistor serves as the output terminal of the power supply control signal output unit. The power supply control unit includes a third resistor, a fourth resistor, and a second transistor; The first end of the third resistor serves as the input terminal of the power supply control unit and is electrically connected to the external power module and the first end of the second transistor; the second end of the third resistor serves as the control terminal of the power supply control unit and is electrically connected to the first end of the fourth resistor and the control terminal of the second transistor; the second end of the fourth resistor is grounded; and the second end of the second transistor serves as the output terminal of the power supply control unit.

5. The light-emitting control device according to claim 1, characterized in that, The drive control module includes: a reference voltage circuit, an operational amplifier chip, an integrator circuit, a differentiator circuit, and a power supply filter circuit. The positive input terminal of the operational amplifier chip is electrically connected to the reference voltage circuit; the inverting input terminal of the operational amplifier chip is electrically connected to the output terminal of the operational amplifier chip through the integrating circuit. The output terminal of the operational amplifier chip is electrically connected to the input terminal of the differentiating circuit; the output terminal of the differentiating circuit is electrically connected to the input terminal of the light-emitting driving module; the power supply terminal of the operational amplifier chip is electrically connected to a voltage source through the power supply filtering circuit.

6. The light-emitting control device according to claim 5, characterized in that, The reference voltage circuit includes: a fifth resistor and a sixth resistor; The first terminal of the fifth resistor is electrically connected to the voltage source; the second terminal of the fifth resistor is electrically connected to the first terminal of the sixth resistor; the second terminal of the sixth resistor is grounded; and the second terminal of the fifth resistor is electrically connected to the positive input terminal of the operational amplifier chip.

7. The light-emitting control device according to claim 5, characterized in that, The integrating circuit includes a seventh resistor and a first capacitor; the differentiating circuit includes an eighth resistor and a second capacitor; the power supply filtering circuit includes a third capacitor, a fourth capacitor, and a first inductor. The first end of the seventh resistor is electrically connected to the inverting input terminal of the operational amplifier chip; the second end of the seventh resistor is electrically connected to the first end of the first capacitor; the second end of the first capacitor is electrically connected to the output terminal of the operational amplifier chip. The first end of the eighth resistor and the first end of the second capacitor are both electrically connected to the output terminal of the operational amplifier chip; the second end of the eighth resistor and the second end of the second capacitor are electrically connected to the input terminal of the light-emitting driving module. The first terminal of the third capacitor, the first terminal of the fourth capacitor, and the first terminal of the first inductor are all electrically connected to the power supply terminal of the operational amplifier chip; the second terminal of the third capacitor and the second terminal of the fourth capacitor are grounded; and the second terminal of the first inductor is electrically connected to a voltage source.

8. The light-emitting control device according to claim 3, characterized in that, The voltage feedback module includes: a tenth resistor and an eleventh resistor; The first end of the tenth resistor serves as the input terminal of the voltage feedback module and is electrically connected to the first output terminal of the light-emitting driving module; the second end of the tenth resistor is grounded; the first end of the tenth resistor is also electrically connected to the first end of the eleventh resistor; the second end of the eleventh resistor serves as the output terminal of the voltage feedback module and is electrically connected to the input terminal of the driving control module.

9. The light-emitting control device according to claim 8, characterized in that, The drive enable module includes a third transistor and a pull-up resistor; the light-emitting drive module includes a fourth transistor. The first terminal of the third transistor serves as the output terminal of the drive enable module and is electrically connected to the control terminal of the fourth transistor; the second terminal of the third transistor is grounded; the control terminal of the third transistor is electrically connected to the first terminal of the pull-up resistor; the control terminal of the third transistor is used to receive control commands; the second terminal of the pull-up resistor is electrically connected to a voltage source. The first terminal of the fourth transistor is electrically connected to the first terminal of the tenth resistor; the second terminal of the fourth transistor is electrically connected to the output terminal of the light-emitting module.

10. A fiber laser, characterized in that, It includes the light-emitting control device and light-emitting module as described in any one of claims 1-9.

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