Power supply start-stop control device and laser

Abstract

The invention provides a power supply start-stop control device and a laser, in the power supply start-stop control device, firstly, a start-stop input control module generates a driving signal according to a power supply control signal and a reference voltage so as to drive a charging and discharging time module to generate an electric signal voltage; and then, the isolation acquisition module distributes the electric signal voltage to each power supply control module, so that each power supply control module generates a control signal according to the corresponding electric signal voltage and the control voltage provided by the second voltage module to control the corresponding amplification power supply to start and stop, thereby realizing independent control of start and stop of each amplification power supply. Therefore, interference and false triggering caused by centralized start-stop control are avoided, and the safety of start-stop control of the multi-stage amplification power supply in the laser is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lasers, and in particular to a power start-stop control device and a laser. Background Art

[0002] Most existing MOPA (Master Oscillator Power-Amplifier) ​​lasers use a multi-stage continuous power amplification structure, and the seed light output by the seed light source is output after multi-stage power amplification. Among them, each stage of the power amplification structure is correspondingly provided with an amplification power supply, and the control module of the MOPA laser controls the multi-stage amplification power supply through an enable control method, and controls the centralized power-on and centralized power-off of the multi-stage amplification power supply. However, during the centralized power-on and centralized power-off control process, during the initialization process of the control module such as the FPGA (Field Programmable Gate Array) or ARM (Advanced RISC Machines) processor, the timing of the pins is prone to uncontrolled state, resulting in delays in centralized power-on or centralized power-off; in addition, during the high-power multi-stage amplification process, the enable control is easily interfered with and mistriggered during the start-stop operation, which reduces the safety of the start-stop control of the multi-stage amplification power supply of the MOPA laser. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a power start-stop control device and a laser to alleviate the above-mentioned problem and ensure the safety of multi-stage amplification power start-stop control in the laser.

[0004] In a first aspect, an embodiment of the present invention provides a power start-stop control device, the device comprising: a start-stop input control module, a charge-discharge time module, an isolation acquisition module, a first voltage module, a second voltage module and a plurality of power control modules; wherein the first voltage module, the start-stop input control module, the charge-discharge time module and the isolation acquisition module are connected in sequence, the plurality of power control modules are respectively connected to the second voltage module and the isolation acquisition module, and each power control module is also connected to a corresponding amplifying power supply; A start-stop input control module, used to obtain a power control signal and a reference voltage sent by the first voltage module, and generate a drive signal according to the power control signal and the reference voltage, and send the drive signal to the charge and discharge time module; wherein the power control signal includes a power start signal and a power shut-off signal; A charge and discharge time module, used to obtain a drive signal and generate an electrical signal voltage according to the drive signal; and send the electrical signal voltage to the isolation acquisition module so that the isolation acquisition module distributes the electrical signal voltage to each power control module; The power control module is used to obtain the corresponding electrical signal voltage and the control voltage provided by the second voltage module, and generate a control signal according to the electrical signal voltage and the control voltage; and send the control signal to the corresponding amplifying power supply so that the amplifying power supply is started or shut down according to the control signal.

[0005] Preferably, the start-stop input control module includes: a first switching element, a first isolation relay and a seventh resistor; wherein, the first end of the first switching element is grounded, the second end of the first switching element is connected to the input port of the power control signal, one end of the seventh resistor is connected between the second end of the first switching element and the input port, the other end of the seventh resistor is grounded, the third end of the first switching element is connected to the second end of the first isolation relay, the first end of the first isolation relay is connected to the working voltage, the third end of the first isolation relay is connected to the charge and discharge time module, the fourth end of the first isolation relay is connected to the first voltage module, and the fifth end of the first isolation relay is grounded.

[0006] Preferably, the charge and discharge time module includes: an eighth resistor, a fifth capacitor and a sixth capacitor; wherein, one end of the eighth resistor is connected to the third end of the first isolation relay, the other end of the eighth resistor is connected to the isolation acquisition module, one end of the fifth capacitor and the sixth capacitor are both connected between the eighth resistor and the isolation acquisition module, and the other ends of the fifth capacitor and the sixth capacitor are both grounded.

[0007] Preferably, the isolation acquisition module includes a plurality of diodes arranged in parallel; wherein anodes of the plurality of diodes are all connected to the eighth resistor, and cathodes of the plurality of diodes are respectively connected to corresponding power supply control modules.

[0008] Preferably, each power control module comprises: a control time unit and a power output unit; wherein the control time unit is respectively connected to the cathode of the corresponding diode and the second voltage module, and the power output unit is connected to the corresponding amplified power supply.

[0009] Preferably, the control time unit includes: a comparison unit, a ninth resistor, a tenth resistor, an eleventh resistor and a seventh capacitor; wherein, a first end of the comparison unit is connected to the power output unit, a second end of the comparison unit is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the second voltage module, one end of the eleventh resistor is connected between the second end of the comparison unit and the tenth resistor, the other end of the eleventh resistor is grounded, a third end of the comparison unit is connected to the cathode of the corresponding diode, one end of the ninth resistor is connected between the third end of the comparison unit and the cathode of the corresponding diode, the other end of the ninth resistor is grounded, a fourth end of the comparison unit is grounded, a fifth end of the comparison unit is connected to the working voltage, one end of the seventh capacitor is connected to the third end of the comparison unit, and the other end of the seventh capacitor is connected to the first end of the comparison unit.

[0010] Preferably, the power output unit includes: a second switching element and a second isolation relay; wherein, the first end of the second switching element is grounded, the second end of the second switching element is connected to the first end of the comparison unit, the third end of the second switching element is connected to the second end of the second isolation relay, the first end of the second isolation relay is connected to the working voltage, and the third and fourth ends of the second isolation relay are connected to the corresponding amplifying power supply.

[0011] Preferably, the first voltage module includes: a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a first reference voltage source; wherein, the first end of the first reference voltage source is grounded, the second end of the first reference voltage source is connected to one end of the first resistor, the other end of the first resistor is connected to the working voltage, one end of the second resistor is connected between the first resistor and the second end of the first reference voltage source, the other end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is grounded, the third end of the first reference voltage source is connected between the second resistor and the third resistor, one end of the first capacitor and the second capacitor are both connected between the first resistor and the second end of the first reference voltage source, and the other ends of the first capacitor and the second capacitor are both grounded.

[0012] Preferably, the second voltage module includes: a fourth resistor, a fifth resistor, a sixth resistor, a third capacitor, a fourth capacitor and a second reference voltage source; wherein, the first end of the second reference voltage source is grounded, the second end of the second reference voltage source is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to the working voltage, one end of the fifth resistor is connected between the fourth resistor and the second end of the second reference voltage source, the other end of the fifth resistor is connected to one end of the sixth resistor, the other end of the sixth resistor is grounded, the third end of the second reference voltage source is connected between the fifth resistor and the sixth resistor, one end of the third capacitor and the fourth capacitor are both connected between the fourth resistor and the second end of the second reference voltage source, and the other ends of the third capacitor and the fourth capacitor are both grounded.

[0013] In a second aspect, an embodiment of the present invention further provides a laser, comprising a multi-stage power amplification structure and a power start-stop control device according to the first aspect; wherein each stage of the power amplification structure is respectively provided with an amplifying power supply, and the power start-stop control device is used to start and stop the amplifying power supply at each stage.

[0014] The embodiments of the present invention bring the following beneficial effects: The embodiments of the present invention provide a power start-stop control device and a laser. In the power start-stop control device, first, a start-stop input control module generates a drive signal according to a power control signal and a reference voltage to drive a charge-discharge time module to generate an electrical signal voltage; then, an isolation acquisition module distributes the electrical signal voltage to each power control module, so that each power control module generates a control signal according to the corresponding electrical signal voltage and a control voltage provided by a second voltage module to control the corresponding amplifier power supply to start and stop, thereby realizing separate start-stop control of each amplifier power supply, avoiding interference and false triggering caused by centralized start-stop control, and improving the safety of start-stop control of multi-stage amplifier power supplies in the laser.

[0015] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a power start-stop control device provided by an embodiment of the present invention; Figure 2 A circuit diagram of a power start-stop control device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] To facilitate understanding of this embodiment, the embodiment of the present invention is described in detail below.

[0021] The embodiment of the present invention provides a power supply start-stop control device, such as Figure 1 As shown, the device includes: a first voltage module 11, a second voltage module 12, a start-stop input control module 13, a charge-discharge time module 14, an isolation acquisition module 15 and a plurality of power control modules 16; wherein the first voltage module 11, the start-stop input control module 13, the charge-discharge time module 14 and the isolation acquisition module 15 are connected in sequence, and the plurality of power control modules 16 are respectively connected to the second voltage module 12 and the isolation acquisition module 15, and each power control module 16 is also connected to the corresponding amplifying power supply ( Figure 1 It should be noted that, since the multiple amplifying power supplies are arranged in a multi-stage power amplifying structure, the multiple amplifying power supplies may also be referred to as a multi-stage amplifying power supply, and the corresponding multiple power supply control modules may also be referred to as a multi-stage power supply control module, and the specific order or level of each power supply control module may be adaptively adjusted according to actual conditions.

[0022] Specifically, the start-stop input control module 13 is used to obtain the power control signal and the reference voltage sent by the first voltage module 11, and generate a drive signal according to the power control signal and the reference voltage, and send the drive signal to the charge and discharge time module 14; wherein the power control signal includes a power start signal and a power shut-off signal. In practical applications, the power control signal can be obtained through a button connected to the start-stop input control module 13, or through a controller connected to the start-stop input control module 13. The user can manually operate the button to input the power control signal, or send the power control signal through the controller. Therefore, the power control signal is sent in two ways, which ensures the safety of the multi-stage amplification power start-stop control when the controller fails, such as in a dead state.

[0023] The charge and discharge time module 14 is used to obtain the drive signal and generate an electrical signal voltage according to the drive signal; and, send the electrical signal voltage to the isolation acquisition module 15, so that the isolation acquisition module 15 distributes the electrical signal voltage to each power control module 16; the power control module 16 is used to obtain the corresponding electrical signal voltage and the control voltage provided by the second voltage module, and generate a control signal according to the electrical signal voltage and the control voltage; and, send the control signal to the corresponding amplifying power supply, so that the amplifying power supply is started or shut down according to the control signal.

[0024] Therefore, in the power start and stop control device provided by the embodiment of the present invention, first, the start and stop input control module generates a drive signal according to the power control signal and the reference voltage to drive the charge and discharge time module to generate an electrical signal voltage; then, the isolation acquisition module distributes the electrical signal voltage to each power control module, so that each power control module generates a control signal according to the corresponding electrical signal voltage and the control voltage provided by the second voltage module to control the corresponding amplifier power supply to start and stop, thereby realizing separate start and stop control of each amplifier power supply, avoiding easy interference and false triggering caused by centralized start and stop control, and improving the safety of start and stop control of multi-stage amplifier power supplies in the laser.

[0025] In order to explain the working principle of the power supply start-stop control device, the following is a description in conjunction with the circuit diagram. Figure 2 As shown, here, a four-level power control module is taken as an example, and the four-level power control module includes: a first-level power control module, a second-level power control module, a third-level power control module and a fourth-level power control module; the circuit structure of each module in the power start-stop control device is as follows: (1) A first voltage module 11; comprising: a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2 and a first reference voltage source D1.

[0026] Among them, the first end (i.e., port 1) of the first reference voltage source D1 is grounded, the second end (i.e., port 2) of the first reference voltage source D1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to the working voltage (Volt Current Condenser, VCC), one end of the second resistor R2 is connected between the first resistor R1 and the second end of the first reference voltage source D1, the other end of the second resistor R2 is connected to one end of the third resistor R3, the other end of the third resistor R3 is grounded, the third end (i.e., port 3) of the first reference voltage source D1 is connected between the second resistor R2 and the third resistor R3, one end of the first capacitor C1 and the second capacitor C2 are both connected between the first resistor R1 and the second end of the first reference voltage source D1, and the other ends of the first capacitor C1 and the second capacitor C2 are both grounded.

[0027] In addition, an output terminal is provided between the first resistor R1 and the second end of the first reference voltage source D1, for providing a reference voltage VB to the start-stop input control module 13. It should be noted that the first reference voltage source D1 may also be replaced by other voltage stabilizing modules or ICs (Integrated Circuits), which may be adaptively adjusted according to actual conditions.

[0028] (2) The second voltage module 12 includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a third capacitor C3, a fourth capacitor C4 and a second reference voltage source D2.

[0029] Among them, the first end (i.e., port 1) of the second reference voltage source D2 is grounded, the second end (i.e., port 2) of the second reference voltage source D2 is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the working voltage VCC, one end of the fifth resistor R5 is connected between the fourth resistor R4 and the second end of the second reference voltage source D2, the other end of the fifth resistor R5 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is grounded, the third end (i.e., port 3) of the second reference voltage source D2 is connected between the fifth resistor R5 and the sixth resistor R6, one end of the third capacitor C3 and the fourth capacitor C4 are both connected between the fourth resistor R4 and the second end of the second reference voltage source D2, and the other ends of the third capacitor C3 and the fourth capacitor C4 are both grounded.

[0030] In addition, an output terminal is provided between the fourth resistor R4 and the second end of the second reference voltage source D2 for outputting the reference voltage VREF. It should be noted that the second reference voltage source D2 may also be replaced by other voltage stabilizing modules or ICs, and may be adaptively adjusted according to actual conditions. In practical applications, the reference voltage VB is generally greater than the reference voltage VREF, and the values ​​of the reference voltage VB and the reference voltage VREF may be set according to actual conditions.

[0031] (3) A start-stop input control module 13; comprising: a first switch element Q1, a first isolation relay K1 and a seventh resistor R7; wherein the first switch element Q1 is preferably a bipolar transistor, and the first isolation relay K1 can also be replaced by an isolation device such as an optocoupler, which can be adaptively adjusted according to actual conditions.

[0032] Among them, the first end (i.e., port 1) of the first switching element Q1 is grounded, the second end (i.e., port 2) of the first switching element Q1 is connected to the input port START-KEY of the power control signal, one end of the seventh resistor R7 is connected between the second end of the first switching element Q1 and the input port START-KEY, the other end of the seventh resistor R7 is grounded, the third end (i.e., port 3) of the first switching element Q1 is connected to the second end (i.e., port 2) of the first isolation relay K1, the first end (i.e., port 1) of the first isolation relay K1 is connected to the working voltage VCC, the third end (i.e., port 3) of the first isolation relay K1 is connected to the charge and discharge time module 14, the fourth end (i.e., port 4) of the first isolation relay K1 is connected to the first voltage module 11, specifically connected to the output end of the first voltage module 11, to obtain the reference voltage VB; the fifth end (i.e., port 5) of the first isolation relay K1 is grounded.

[0033] (4) Charging and discharging time module 14; including: an eighth resistor R8, a fifth capacitor C5 and a sixth capacitor C6.

[0034] Among them, one end of the eighth resistor R8 is connected to the third end of the first isolation relay K1, the other end of the eighth resistor R8 is connected to the isolation acquisition module 15, one end of the fifth capacitor C5 and the sixth capacitor C6 are connected between the eighth resistor R8 and the isolation acquisition module 15, and the other ends of the fifth capacitor C5 and the sixth capacitor C6 are grounded. Therefore, in practical applications, the eighth resistor R8, the fifth capacitor C5 and the sixth capacitor C6 form an RC network, which not only serves as a dynamic acquisition of the power control signal, but also can be used as a dynamic time constant to provide the entire time domain parameters for RC charging (integration) and RC discharging (differentiation) to adjust the maximum start and stop time of the amplifier power supply, and realize the free adjustment and setting of the start and stop time of each level of the amplifier power supply.

[0035] (5) Isolation acquisition module 15; including multiple diodes arranged in parallel. In practical applications, the number of diodes should be consistent with the number of power control modules. Here, since the number of power control modules is 4, the number of diodes is also 4. For the sake of convenience, the diode corresponding to the first-level power control module is called D3, the diode corresponding to the second-level power control module is called D4, the diode corresponding to the third-level power control module is called D5, and the diode corresponding to the fourth-level power control module is called D6.

[0036] Among them, the anodes of multiple diodes are all connected to the eighth resistor R8, and the cathodes of multiple diodes are respectively connected to the corresponding power control modules. For example, the anodes of D3~D6 are all connected to the eighth resistor R8, the cathode of D3 is connected to the first-level power control module, the cathode of D4 is connected to the second-level power control module, the cathode of D5 is connected to the third-level power control module, and the cathode of D6 is connected to the fourth-level power control module. Therefore, the isolation acquisition module 15 provides the corresponding electrical signal voltage to the corresponding power control module through each diode, so that the transmission isolation of the electrical signal voltage at each level is not affected, thereby realizing the separate control of the start and stop of each amplifier power supply, avoiding the easy interference and false triggering caused by the centralized start and stop control, and improving the safety of the start and stop control of the multi-stage amplifier power supply in the laser.

[0037] (6) Multiple power control modules; each power control module includes: a control time unit and a power output unit; the control time unit is connected to the cathode of the corresponding diode and the second voltage module respectively, and the power output unit is connected to the corresponding amplified power supply.

[0038] For example, Figure 2 As shown, the primary power control module includes: a primary control time unit 161 and a primary power output unit 162, the primary control time unit 161 is connected to the cathode of the corresponding diode D3 and the second voltage module 12, and the primary power output unit 162 is connected to the corresponding primary amplification power supply ( Figure 2 ) connection.

[0039] Among them, the first-level control time unit 161 includes: a first comparison unit U1, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11 and a seventh capacitor C7; wherein, the first end (i.e., port 1) of the first comparison unit U1 is connected to the first-level power output unit 162, the second end (i.e., port 2) of the first comparison unit U1 is connected to one end of the tenth resistor R10, and the other end of the tenth resistor R10 is connected to the second voltage module 12, specifically connected to the output end of the second voltage module 12, to obtain the reference voltage VREF. One end of the eleventh resistor R11 is connected between the second end of the first comparison unit U1 and the tenth resistor R10, the other end of the eleventh resistor R11 is grounded, the third end (i.e., port 3) of the first comparison unit U1 is connected to the cathode of the corresponding diode D3, one end of the ninth resistor R9 is connected between the third end of the first comparison unit U1 and the cathode of the corresponding diode D3, the other end of the ninth resistor R9 is grounded, the fourth end (i.e., port 4) of the first comparison unit U1 is grounded, the fifth end (i.e., port 5) of the first comparison unit U1 is connected to the operating voltage VCC, one end of the seventh capacitor C7 is connected to the third end of the first comparison unit U1, and the other end of the seventh capacitor C7 is connected to the first end of the first comparison unit U1.

[0040] In addition, the primary power output unit 162 includes: a second switch element Q2 and a second isolation relay K2; wherein the first end (i.e., port 1) of the second switch element Q2 is grounded, the second end (i.e., port 2) of the second switch element Q2 is connected to the first end of the first comparison unit U1, the third end (i.e., port 3) of the second switch element Q2 is connected to the second end (i.e., port 2) of the second isolation relay K2, the first end (i.e., port 1) of the second isolation relay K2 is connected to the working voltage VCC, the third end (i.e., port 3) and the fourth end (i.e., port 4) of the second isolation relay K2 are connected to the corresponding primary amplification power supply POWER1, where the third end of the second isolation relay K2 is connected to the input end POWER1-IN of the primary amplification power supply POWER1, and the fourth end of the second isolation relay K2 is connected to the output end POWER1-OUT of the primary amplification power supply POWER1. In particular, the fifth end (i.e., port 5) of the second isolation relay K2 can be adaptively connected in practical applications, and the embodiment of the present invention does not limit this.

[0041] In addition, the first-level control time unit 161 also includes a twelfth resistor R12, and the first-level power output unit 162 also includes a thirteenth resistor R13 and a fourteenth resistor R14; wherein, one end of the thirteenth resistor R13 is connected to the first end of the first comparison unit U1, the other end of the thirteenth resistor R13 is connected to the second end of the second switch element Q2, one end of the fourteenth resistor R14 is connected between the thirteenth resistor R13 and the second end of the second switch element Q2, the other end of the fourteenth resistor R14 is grounded, one end of the twelfth resistor R12 is connected between the thirteenth resistor R13 and the first end of the first comparison unit U1, and the other end of the twelfth resistor R12 is grounded.

[0042] Similarly, the secondary power control module includes: a secondary control time unit 163 and a secondary power output unit 164, the secondary control time unit 163 is connected to the cathode of the corresponding diode D4 and the second voltage module 12, and the secondary power output unit 164 is connected to the corresponding secondary amplifier power ( Figure 2 ) connection.

[0043] Among them, the secondary control time unit 163 includes: a second comparison unit U2, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17 and an eighth capacitor C8; wherein, the first end (i.e., port 1) of the second comparison unit U2 is connected to the secondary power output unit 164, the second end (i.e., port 2) of the second comparison unit U2 is connected to one end of the sixteenth resistor R16, and the other end of the sixteenth resistor R16 is connected to the second voltage module 12, specifically connected to the output end of the second voltage module 12, to obtain the reference voltage VREF. One end of the seventeenth resistor R17 is connected between the second end of the second comparison unit U2 and the sixteenth resistor R16, the other end of the seventeenth resistor R17 is grounded, the third end (i.e., port 3) of the second comparison unit U2 is connected to the cathode of the corresponding diode D4, one end of the fifteenth resistor R15 is connected between the third end of the second comparison unit U2 and the cathode of the corresponding diode D4, the other end of the fifteenth resistor R15 is grounded, the fourth end (i.e., port 4) of the second comparison unit U2 is grounded, the fifth end (i.e., port 5) of the second comparison unit U2 is connected to the operating voltage VCC, one end of the eighth capacitor C8 is connected to the third end of the second comparison unit U2, and the other end of the eighth capacitor C8 is connected to the first end of the second comparison unit U2.

[0044] In addition, the secondary power output unit 164 includes: a third switch element Q3 and a third isolation relay K3; wherein the first end (i.e., port 1) of the third switch element Q3 is grounded, the second end (i.e., port 2) of the third switch element Q3 is connected to the first end of the second comparison unit U2, the third end (i.e., port 3) of the third switch element Q3 is connected to the second end (i.e., port 2) of the third isolation relay K3, the first end (i.e., port 1) of the third isolation relay K3 is connected to the working voltage VCC, the third end (i.e., port 3) and the fourth end (i.e., port 4) of the third isolation relay K3 are connected to the corresponding secondary amplification power supply POWER2, ​​where the third end of the third isolation relay K3 is connected to the input end POWER2-IN of the secondary amplification power supply POWER2, ​​and the fourth end of the third isolation relay K3 is connected to the output end POWER2-OUT of the secondary amplification power supply POWER2. In particular, the fifth end (i.e., port 5) of the third isolation relay K3 can be adaptively connected in practical applications, and the embodiment of the present invention does not limit this.

[0045] In addition, the secondary control time unit 163 also includes an eighteenth resistor R18, and the secondary power output unit 164 also includes a nineteenth resistor R19 and a twentieth resistor R20; wherein, one end of the nineteenth resistor R19 is connected to the first end of the second comparison unit U2, the other end of the nineteenth resistor R19 is connected to the second end of the third switch element Q3, one end of the twentieth resistor R20 is connected between the nineteenth resistor R19 and the second end of the third switch element Q3, the other end of the twentieth resistor R20 is grounded, one end of the eighteenth resistor R18 is connected between the nineteenth resistor R19 and the first end of the second comparison unit U2, and the other end of the eighteenth resistor R18 is grounded.

[0046] Similarly, the three-level power supply control module includes: a three-level control time unit 165 and a three-level power supply output unit 166, the three-level control time unit 165 is connected to the cathode of the corresponding diode D5 and the second voltage module 12, and the three-level power supply output unit 166 is connected to the corresponding three-level amplifier power supply ( Figure 2 ) connection.

[0047] Among them, the three-level control time unit 165 includes: a third comparison unit U3, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23 and a ninth capacitor C9; wherein, the first end (i.e., port 1) of the third comparison unit U3 is connected to the three-level power output unit 166, the second end (i.e., port 2) of the third comparison unit U3 is connected to one end of the twenty-second resistor R22, and the other end of the twenty-second resistor R22 is connected to the second voltage module 12, specifically connected to the output end of the second voltage module 12, to obtain the reference voltage VREF. One end of the twenty-third resistor R23 is connected between the second end of the third comparison unit U3 and the twenty-second resistor R22, the other end of the twenty-third resistor R23 is grounded, the third end (i.e., port 3) of the third comparison unit U3 is connected to the cathode of the corresponding diode D5, one end of the twenty-first resistor R21 is connected between the third end of the third comparison unit U3 and the cathode of the corresponding diode D5, the other end of the twenty-first resistor R21 is grounded, the fourth end (i.e., port 4) of the third comparison unit U3 is grounded, the fifth end (i.e., port 5) of the third comparison unit U3 is connected to the operating voltage VCC, one end of the ninth capacitor C9 is connected to the third end of the third comparison unit U3, and the other end of the ninth capacitor C9 is connected to the first end of the third comparison unit U3.

[0048] In addition, the three-stage power output unit 166 includes: a fourth switch element Q4 and a fourth isolation relay K4; wherein the first end (i.e., port 1) of the fourth switch element Q4 is grounded, the second end (i.e., port 2) of the fourth switch element Q4 is connected to the first end of the third comparison unit U3, the third end (i.e., port 3) of the fourth switch element Q4 is connected to the second end (i.e., port 2) of the fourth isolation relay K4, the first end (i.e., port 1) of the fourth isolation relay K4 is connected to the working voltage VCC, the third end (i.e., port 3) and the fourth end (i.e., port 4) of the fourth isolation relay K4 are connected to the corresponding three-stage amplification power supply POWER3, where the third end of the fourth isolation relay K4 is connected to the input end POWER3-IN of the three-stage amplification power supply POWER3, and the fourth end of the fourth isolation relay K4 is connected to the output end POWER3-OUT of the three-stage amplification power supply POWER3. In particular, the fifth end (i.e., port 5) of the fourth isolation relay K4 can be adaptively connected in practical applications, and the embodiment of the present invention does not limit this.

[0049] In addition, the three-level control time unit 165 also includes a twenty-fourth resistor R24, and the three-level power output unit 166 also includes a twenty-fifth resistor R25 and a twenty-sixth resistor R26; wherein, one end of the twenty-fifth resistor R25 is connected to the first end of the third comparison unit U3, the other end of the twenty-fifth resistor R25 is connected to the second end of the fourth switch element Q4, one end of the twenty-sixth resistor R26 is connected between the twenty-fifth resistor R25 and the second end of the fourth switch element Q4, the other end of the twenty-sixth resistor R26 is grounded, one end of the twenty-fourth resistor R24 ​​is connected between the twenty-fifth resistor R25 and the first end of the third comparison unit U3, and the other end of the twenty-fourth resistor R24 ​​is grounded.

[0050] Similarly, the four-level power supply control module includes: a four-level control time unit 167 and a four-level power supply output unit 168, the four-level control time unit 167 is connected to the cathode of the corresponding diode D6 and the second voltage module 12, and the four-level power supply output unit 168 is connected to the corresponding four-level amplifier power supply ( Figure 2 ) connection.

[0051] Among them, the four-level control time unit 167 includes: a fourth comparison unit U4, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29 and a tenth capacitor C10; wherein, the first end (i.e., port 1) of the fourth comparison unit U4 is connected to the four-level power output unit 168, the second end (i.e., port 2) of the fourth comparison unit U4 is connected to one end of the twenty-eighth resistor R28, and the other end of the twenty-eighth resistor R28 is connected to the second voltage module 12, specifically connected to the output end of the second voltage module 12, to obtain the reference voltage VREF. One end of the twenty-ninth resistor R29 is connected between the second end of the fourth comparison unit U4 and the twenty-eighth resistor R28, the other end of the twenty-ninth resistor R29 is grounded, the third end (i.e., port 3) of the fourth comparison unit U4 is connected to the cathode of the corresponding diode D6, one end of the twenty-seventh resistor R27 is connected between the third end of the fourth comparison unit U4 and the cathode of the corresponding diode D6, the other end of the twenty-seventh resistor R27 is grounded, the fourth end (i.e., port 4) of the fourth comparison unit U4 is grounded, the fifth end (i.e., port 5) of the fourth comparison unit U4 is connected to the operating voltage VCC, one end of the tenth capacitor C10 is connected to the third end of the fourth comparison unit U4, and the other end of the tenth capacitor C10 is connected to the first end of the fourth comparison unit U4.

[0052] In addition, the four-stage power output unit 168 includes: a fifth switch element Q5 and a fifth isolation relay K5; wherein the first end (i.e., port 1) of the fifth switch element Q5 is grounded, the second end (i.e., port 2) of the fifth switch element Q5 is connected to the first end of the fourth comparison unit U4, the third end (i.e., port 3) of the fifth switch element Q5 is connected to the second end (i.e., port 2) of the fifth isolation relay K5, the first end (i.e., port 1) of the fifth isolation relay K5 is connected to the working voltage VCC, the third end (i.e., port 3) and the fourth end (i.e., port 4) of the fifth isolation relay K5 are connected to the corresponding four-stage amplifier power supply POWER4, where the third end of the fifth isolation relay K5 is connected to the input end POWER4-IN of the four-stage amplifier power supply POWER4, and the fourth end of the fifth isolation relay K5 is connected to the output end POWER4-OUT of the four-stage amplifier power supply POWER4. In particular, the fifth end (i.e., port 5) of the fifth isolation relay K5 can be adaptively connected in practical applications, and the embodiment of the present invention does not limit this.

[0053] In addition, the four-level control time unit 167 also includes a thirtieth resistor R30, and the four-level power output unit 169 also includes a thirty-first resistor R31 and a thirty-second resistor R32; wherein, one end of the thirty-first resistor R31 is connected to the first end of the fourth comparison unit U4, the other end of the thirty-first resistor R31 is connected to the second end of the fifth switch element Q5, one end of the thirty-second resistor R32 is connected between the thirty-first resistor R31 and the second end of the fifth switch element Q5, the other end of the thirty-second resistor R32 is grounded, one end of the thirtieth resistor R30 is connected between the thirty-first resistor R31 and the first end of the fourth comparison unit U4, and the other end of the thirtieth resistor R30 is grounded.

[0054] For Figure 2 The power supply start-stop control device shown includes two modes of operation: startup timing control and shutdown timing control. The two modes are described in detail below.

[0055] ① Start timing control; the start-stop input control module 13 receives a power control signal sent from a controller or a manual operation button through the input port START-KEY, where the power control signal is a power start signal, and the power start signal drives the first isolation relay K1 through the first switching element Q1 to close the first isolation relay K1. At this time, the reference voltage VB provided by the first voltage module 11 charges the eighth resistor R8, the fifth capacitor C5 and the sixth capacitor C6 through the first isolation relay K1 to generate an electrical signal voltage, where the electrical signal voltage is a charging signal voltage.

[0056] Then, the electrical signal voltage is distributed to the primary control time unit 161 via the diode D3, to the secondary control time unit 163 via the diode D4, to the tertiary control time unit 165 via the diode D5, and to the quaternary control time unit 167 via the diode D6. After the distribution is completed, the electrical signal voltage corresponding to the primary control time unit 161 is the first distribution voltage, the electrical signal voltage corresponding to the secondary control time unit 163 is the second distribution voltage, the electrical signal voltage corresponding to the tertiary control time unit 165 is the third distribution voltage, and the electrical signal voltage corresponding to the quaternary control time unit 167 is the fourth distribution voltage, and, according to the level order, the first distribution voltage < the second distribution voltage < the third distribution voltage < the fourth distribution voltage is satisfied.

[0057] In addition, the startup time of the first-stage amplifying power supply is set to T1, the startup time of the second-stage amplifying power supply is set to T2, the startup time of the third-stage amplifying power supply is set to T3, and the startup time of the fourth-stage amplifying power supply is set to T4, and T1<T2<T3<T4. Therefore, the startup sequence is: first-stage amplifying power supply, second-stage amplifying power supply, third-stage amplifying power supply and fourth-stage amplifying power supply. It should be noted that in actual applications, the startup sequence between the multi-stage amplifying power supplies can be adjusted according to actual needs.

[0058] For the primary control time unit 161, in addition to obtaining the corresponding electrical signal voltage, i.e., the first distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the first control voltage for the sake of convenience. The first control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the tenth resistor R10 and the eleventh resistor R11. At this time, when the first distribution voltage is higher than the first control voltage, the first comparison unit U1 flips and outputs a high level to the second switch element Q2 through the first end, so that the second switch element Q2 drives the second isolation relay K2 to close, thereby realizing the start control of the primary amplifier power supply POWER1.

[0059] For the secondary control time unit 163, in addition to obtaining the corresponding electrical signal voltage, i.e., the second distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the second control voltage for the sake of convenience. The second control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the sixteenth resistor R16 and the seventeenth resistor R17. At this time, when the second distribution voltage is higher than the second control voltage, the second comparison unit U2 flips and outputs a high level to the third switch element Q3 through the first end, so that the third switch element Q3 drives the third isolation relay K3 to close, thereby realizing the start control of the secondary amplifier power supply POWER2.

[0060] For the three-level control time unit 165, in addition to obtaining the corresponding electrical signal voltage, i.e., the third distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the third control voltage for the sake of convenience. The third control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the twenty-second resistor R22 and the twenty-third resistor R23. At this time, when the third distribution voltage is higher than the third control voltage, the third comparison unit U3 flips and outputs a high level to the fourth switch element Q4 through the first end, so that the fourth switch element Q4 drives the fourth isolation relay K4 to close, thereby realizing the start control of the three-level amplifier power supply POWER3.

[0061] For the four-level control time unit 167, in addition to obtaining the corresponding electrical signal voltage, i.e., the fourth distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the fourth control voltage for the sake of convenience. The fourth control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the twenty-eighth resistor R28 and the twenty-ninth resistor R29. At this time, when the fourth distribution voltage is higher than the fourth control voltage, the fourth comparison unit U4 flips and outputs a high level to the fifth switch element Q5 through the first end, so that the fifth switch element Q5 drives the fifth isolation relay K5 to close, thereby realizing the start control of the four-level amplifier power supply POWER4.

[0062] In summary, by adjusting the startup time according to the startup sequence of each level of the amplifier power supply, the first-level amplifier power supply, the second-level amplifier power supply, the third-level amplifier power supply and the fourth-level amplifier power supply can be started in sequence, thereby avoiding the startup of the multi-stage amplifier power supply being affected by the controller startup initialization, and ensuring the safety of the startup timing of the multi-stage amplifier power supply.

[0063] ② Shutdown timing control; the start-stop input control module 13 receives a power control signal sent from a controller or a manual operation button through the input port START-KEY, where the power control signal is a power shutdown signal, and the power shutdown signal drives the first isolation relay K1 through the first switching element Q1 to shut down the first isolation relay K1. At this time, the eighth resistor R8, the fifth capacitor C5 and the sixth capacitor C6 are discharged to generate an electrical signal voltage, where the electrical signal voltage is a discharge signal voltage.

[0064] Then, the electrical signal voltage is distributed to the primary control time unit 161 via the diode D3, to the secondary control time unit 163 via the diode D4, to the tertiary control time unit 165 via the diode D5, and to the quaternary control time unit 167 via the diode D6. After the distribution is completed, the electrical signal voltage corresponding to the primary control time unit 161 is the first distribution voltage, the electrical signal voltage corresponding to the secondary control time unit 163 is the second distribution voltage, the electrical signal voltage corresponding to the tertiary control time unit 165 is the third distribution voltage, and the electrical signal voltage corresponding to the quaternary control time unit 167 is the fourth distribution voltage, and, according to the level order, the first distribution voltage < the second distribution voltage < the third distribution voltage < the fourth distribution voltage is satisfied.

[0065] In addition, the shutdown time of the first-stage amplification power supply is set to T5, the shutdown time of the second-stage amplification power supply is set to T6, the shutdown time of the third-stage amplification power supply is set to T7, and the shutdown time of the fourth-stage amplification power supply is set to T8, and T5>T6>T7>T8. Therefore, the shutdown sequence is: fourth-stage amplification power supply, third-stage amplification power supply, second-stage amplification power supply and first-stage amplification power supply. It should be noted that in actual applications, the shutdown sequence between the multi-stage amplification power supplies can be adjusted according to actual needs.

[0066] For the four-level control time unit 167, in addition to obtaining the corresponding electrical signal voltage, i.e., the fourth distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the fourth control voltage for the sake of convenience. The fourth control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the twenty-eighth resistor R28 and the twenty-ninth resistor R29. At this time, when the fourth distribution voltage is lower than the fourth control voltage, the fourth comparison unit U4 flips and outputs a low level to the fifth switch element Q5 through the first end, so that the fifth switch element Q5 drives the fifth isolation relay K5 to turn off, thereby realizing the shutdown control of the four-level amplifier power supply POWER4.

[0067] For the three-level control time unit 165, in addition to obtaining the corresponding electrical signal voltage, i.e., the third distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the third control voltage for the sake of convenience. The third control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the twenty-second resistor R22 and the twenty-third resistor R23. At this time, when the third distribution voltage is lower than the third control voltage, the third comparison unit U3 flips and outputs a low level to the fourth switch element Q4 through the first end, so that the fourth switch element Q4 drives the fourth isolation relay K4 to turn off, thereby realizing the shutdown control of the three-level amplifier power supply POWER3.

[0068] For the secondary control time unit 163, in addition to obtaining the corresponding electrical signal voltage, i.e., the second distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the second control voltage for the sake of convenience. The second control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the sixteenth resistor R16 and the seventeenth resistor R17. At this time, when the second distribution voltage is lower than the second control voltage, the second comparison unit U2 flips and outputs a low level to the third switch element Q3 through the first end, so that the third switch element Q3 drives the third isolation relay K3 to turn off, thereby realizing the shutdown control of the secondary amplifier power supply POWER2.

[0069] For the primary control time unit 161, in addition to obtaining the corresponding electrical signal voltage, i.e., the first distribution voltage, the second voltage module 12 also provides a control voltage, which is referred to as the first control voltage for the sake of convenience. The first control voltage is obtained by dividing the reference voltage VREF provided by the second voltage module 12 by the tenth resistor R10 and the eleventh resistor R11. At this time, when the first distribution voltage is lower than the first control voltage, the first comparison unit U1 flips and outputs a low level to the second switch element Q2 through the first end, so that the second switch element Q2 drives the second isolation relay K2 to turn off, thereby realizing the shutdown control of the primary amplifier power supply POWER1.

[0070] Therefore, according to the start-up order of each level of the amplifier power supply, by adjusting the shutdown time, the four-level amplifier power supply, the three-level amplifier power supply, the two-level amplifier power supply and the one-level amplifier power supply can be shut down in sequence, thereby avoiding the impact of the controller power-off instability on the shutdown of the multi-stage amplifier power supply and ensuring the safety of the shutdown timing of the multi-stage amplifier power supply.

[0071] In summary, the power start-stop control device provided by the embodiment of the present invention isolates and controls the start-stop of the multi-stage amplifying power supply through the start-stop input control module, and realizes the isolation of the electrical signal voltage transmission corresponding to each stage of the amplifying power supply through the isolation acquisition module; and the start or shut-down time control is performed through the control time unit corresponding to each stage of the amplifying power supply, and at the same time, the corresponding power output unit provides an on-off function for the main circuit of the amplifying power supply to prevent false triggering, thereby realizing the individual start-stop control of each amplifying power supply, avoiding the easy interference and false triggering caused by the centralized start-stop control, and improving the safety of the start-stop control of the multi-stage amplifying power supply in the laser. In addition, it can also ensure that when the controller fails, such as in a dead state, the multi-stage amplifying power supply is safely shut down in sequence through a button switch, thereby ensuring the service life of the laser.

[0072] Furthermore, based on the above-mentioned power start and stop control device, an embodiment of the present invention also provides a laser, including a multi-stage power amplification structure and the above-mentioned power start and stop control device; wherein, each stage of the power amplification structure is respectively provided with an amplifying power supply, and the power start and stop control device is used to start and stop control the amplifying power supplies at each stage. For details, please refer to the above-mentioned embodiment, and the embodiment of the present invention will not be described in detail here.

[0073] The laser provided in the embodiment of the present invention has the same technical features as the power start and stop control device provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects. It should be noted that the structure of the specific laser can refer to the prior art, and the embodiment of the present invention will not be described in detail here.

[0074] The computer program product of the power start-stop control device and the laser provided in the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the previous embodiments. The specific implementation can be referred to the previous embodiments and will not be repeated here.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the laser described above can refer to the corresponding process in the aforementioned embodiment, and will not be repeated here.

[0076] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that can be executed by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., various media that can store program codes.

[0078] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0079] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A power start-stop control device, characterized in that: The device comprises: a start-stop input control module, a charge-discharge time module, an isolation acquisition module, a first voltage module, a second voltage module and a plurality of power control modules; wherein the first voltage module, the start-stop input control module, the charge-discharge time module and the isolation acquisition module are connected in sequence, a plurality of the power control modules are respectively connected to the second voltage module and the isolation acquisition module, and each of the power control modules is also connected to a corresponding amplifying power supply; The start-stop input control module is used to obtain the power control signal and the reference voltage sent by the first voltage module, and generate a drive signal according to the power control signal and the reference voltage, and send the drive signal to the charge and discharge time module; wherein the power control signal includes a power start signal and a power shutdown signal; The charge and discharge time module is used to obtain the drive signal and generate an electrical signal voltage according to the drive signal; and send the electrical signal voltage to the isolation acquisition module so that the isolation acquisition module distributes the electrical signal voltage to each of the power control modules; The power supply control module is used to obtain the corresponding electrical signal voltage and the control voltage provided by the second voltage module, and generate a control signal according to the electrical signal voltage and the control voltage; and send the control signal to the corresponding amplifying power supply so that the amplifying power supply is started or shut down according to the control signal.

2. The power start-stop control device according to claim 1, characterized in that: The start-stop input control module includes: a first switch element, a first isolation relay and a seventh resistor; Among them, the first end of the first switching element is grounded, the second end of the first switching element is connected to the input port of the power control signal, one end of the seventh resistor is connected between the second end of the first switching element and the input port, the other end of the seventh resistor is grounded, the third end of the first switching element is connected to the second end of the first isolation relay, the first end of the first isolation relay is connected to the working voltage, the third end of the first isolation relay is connected to the charging and discharging time module, the fourth end of the first isolation relay is connected to the first voltage module, and the fifth end of the first isolation relay is grounded.

3. The power start-stop control device according to claim 2, characterized in that: The charging and discharging time module includes: an eighth resistor, a fifth capacitor and a sixth capacitor; Among them, one end of the eighth resistor is connected to the third end of the first isolation relay, the other end of the eighth resistor is connected to the isolation acquisition module, one end of the fifth capacitor and the sixth capacitor are both connected between the eighth resistor and the isolation acquisition module, and the other ends of the fifth capacitor and the sixth capacitor are both grounded.

4. The power start-stop control device according to claim 3, characterized in that: The isolation acquisition module includes a plurality of diodes arranged in parallel; wherein the anodes of the plurality of diodes are all connected to the eighth resistor, and the cathodes of the plurality of diodes are respectively connected to the corresponding power control modules.

5. The power start-stop control device according to claim 4, characterized in that: Each of the power control modules includes: a control time unit and a power output unit; wherein the control time unit is respectively connected to the cathode of the corresponding diode and the second voltage module, and the power output unit is connected to the corresponding amplified power supply.

6. The power start-stop control device according to claim 5, characterized in that: The control time unit includes: a comparison unit, a ninth resistor, a tenth resistor, an eleventh resistor and a seventh capacitor; Among them, the first end of the comparison unit is connected to the power output unit, the second end of the comparison unit is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the second voltage module, one end of the eleventh resistor is connected between the second end of the comparison unit and the tenth resistor, the other end of the eleventh resistor is grounded, the third end of the comparison unit is connected to the cathode of the corresponding diode, one end of the ninth resistor is connected between the third end of the comparison unit and the cathode of the corresponding diode, the other end of the ninth resistor is grounded, the fourth end of the comparison unit is grounded, the fifth end of the comparison unit is connected to the working voltage, one end of the seventh capacitor is connected to the third end of the comparison unit, and the other end of the seventh capacitor is connected to the first end of the comparison unit.

7. The power start-stop control device according to claim 6, characterized in that: The power output unit includes: a second switch element and a second isolation relay; Among them, the first end of the second switching element is grounded, the second end of the second switching element is connected to the first end of the comparison unit, the third end of the second switching element is connected to the second end of the second isolation relay, the first end of the second isolation relay is connected to the working voltage, and the third and fourth ends of the second isolation relay are connected to the corresponding amplification power supply.

8. The power start-stop control device according to claim 1, characterized in that: The first voltage module includes: a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a first reference voltage source; Among them, the first end of the first reference voltage source is grounded, the second end of the first reference voltage source is connected to one end of the first resistor, the other end of the first resistor is connected to the working voltage, one end of the second resistor is connected between the first resistor and the second end of the first reference voltage source, the other end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is grounded, the third end of the first reference voltage source is connected between the second resistor and the third resistor, one end of the first capacitor and the second capacitor are both connected between the first resistor and the second end of the first reference voltage source, and the other ends of the first capacitor and the second capacitor are both grounded.

9. The power start-stop control device according to claim 1, characterized in that: The second voltage module includes: a fourth resistor, a fifth resistor, a sixth resistor, a third capacitor, a fourth capacitor and a second reference voltage source; Among them, the first end of the second reference voltage source is grounded, the second end of the second reference voltage source is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to the working voltage, one end of the fifth resistor is connected between the fourth resistor and the second end of the second reference voltage source, the other end of the fifth resistor is connected to one end of the sixth resistor, the other end of the sixth resistor is grounded, the third end of the second reference voltage source is connected between the fifth resistor and the sixth resistor, one end of the third capacitor and the fourth capacitor are both connected between the fourth resistor and the second end of the second reference voltage source, and the other ends of the third capacitor and the fourth capacitor are both grounded.

10. A laser, characterized in that: It comprises a multi-stage power amplification structure and a power supply start-stop control device as described in any one of claims 1 to 9 above; wherein each stage of the power amplification structure is respectively provided with an amplified power supply, and the power supply start-stop control device is used to perform start-stop control on each stage of the amplified power supply.

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