Ethernet carrier modem circuit, laser bus controller and system

Abstract

The application discloses an Ethernet carrier modulation and demodulation circuit, a laser bus controller and a system. The Ethernet carrier modulation and demodulation circuit is integrated with a double-isolation power supply and comprises a network isolation unit and a coupling modulation and demodulation unit. The network isolation unit is used for electrically isolating a first group of TX differential signals and a first group of RX differential signals to obtain a second group of TX differential signals and a second group of RX differential signals after isolation. The coupling modulation and demodulation unit is used for coupling and modulating the second group of TX differential signals and an external direct-current system power supply into active Ethernet TX carrier signals and decoupling and demodulating the second group of RX differential signals and an external direct-current driving power supply into active Ethernet RX carrier signals. Thus, the electrical wiring mode can be simplified, the power supply interference of the laser equipment is reduced, and the integration degree and the communication speed of the laser equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and in particular to an Ethernet carrier modulation and demodulation circuit, a laser bus controller, and a system. Background Technology

[0002] With the development of laser technology, the laser industry has begun to introduce industrial fieldbus control in recent years. EtherCAT bus, Profinet bus, and Ethernet bus have become the standard Ethernet communication methods for laser processing systems due to their powerful real-time transmission and synchronization performance.

[0003] However, traditional industrial Ethernet buses do not support power supply. When communicating between devices and boards, a separate power supply is required, which is costly, causes complex wiring, is prone to installation errors, and is difficult to troubleshoot. In particular, high-power lasers and laser processing heads are small in size and have high integration of electrical control boards. In harsh working environments such as high temperature and humidity, equipment vibration, air dust, and complex electromagnetic fields, if external control is achieved through conventional external control I / O signals and power cables, the digital signals and analog signals between devices are not grounded, making it difficult to guarantee the stability and reliability of long-term operation. The I / O control method also affects the synchronization of laser processing, making it difficult to integrate the bus system and implement intelligent real-time closed-loop control. This reduces the integration of laser equipment and communication speed, and increases power supply interference for laser equipment. Summary of the Invention

[0004] The present invention aims to provide an Ethernet carrier modulation and demodulation circuit, a laser bus controller, and a system, in order to solve the problems of traditional industrial Ethernet buses not supporting power supply, requiring a separate power supply for communication between devices and boards, resulting in high costs, complex wiring, reduced integration of laser equipment, and increased power supply interference for laser equipment.

[0005] To address the aforementioned technical problems, a first aspect of the present invention provides an Ethernet carrier modulation and demodulation circuit, wherein the Ethernet carrier modulation and demodulation circuit integrates a dual-isolation power supply and includes: a network isolation unit and a coupling modulation and demodulation unit; wherein:

[0006] The network isolation unit is used to electrically isolate the first group of TX differential signals and the first group of RX differential signals of the Ethernet, so as to obtain the isolated second group of TX differential signals and the second group of RX differential signals.

[0007] The coupling modulation and demodulation unit is used to couple and modulate the second group of TX differential signals with an external DC system power supply into an active Ethernet TX carrier signal, and to decouple and demodulate the second group of RX differential signals with an external DC drive power supply into an active Ethernet RX carrier signal.

[0008] Optionally, the Ethernet carrier modulation and demodulation circuit further includes a power supply voltage regulator unit, which is electrically connected to the network isolation unit and is used to stabilize the power supply to the network isolation unit.

[0009] Optionally, the Ethernet carrier modulation and demodulation circuit further includes a terminal matching circuit, which is electrically connected to the power supply regulator unit and is used to avoid reflected signals during network communication.

[0010] Optionally, the Ethernet carrier modulation and demodulation circuit further includes an anti-static protection unit, which is electrically connected to the terminal matching circuit to protect the first group of Ethernet TX differential signals and the second group of Ethernet RX differential signals from external electrostatic surge pulse interference and lightning strike interference, and to quickly discharge to ground when subjected to electrostatic surge pulse interference.

[0011] Optionally, the network isolation unit outputs a second set of isolated TX differential signals, wherein the second set of TX differential signals includes 2_TX_P differential signals and 2_TX_N differential signals; and outputs a second set of isolated RX differential signals, wherein the second set of RX differential signals includes 2_RX_P differential signals and 2_RX_N differential signals.

[0012] Optionally, the Ethernet carrier modulation and demodulation circuit further includes a differential signal protection unit, which is electrically connected to the network isolation unit and is used to protect the two differential signals output by the network isolation unit: the second set of TX differential signals and the second set of RX differential signals.

[0013] Optionally, the Ethernet carrier modulation and demodulation circuit further includes a coupling unit, which is used to couple the two differential signals, the second set of TX differential signals and the second set of RX differential signals, output by the network isolation unit, to the coupling modulation and demodulation unit.

[0014] Optionally, the coupling modulation and demodulation unit includes: a first LC circuit and a second LC circuit;

[0015] The first LC circuit is used to couple and modulate the second group of TX differential signals with an external DC system power supply into an active Ethernet TX carrier signal; wherein, the POE_TX_P carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_P differential signal in the second group of TX differential signals and the DC system power supply ground, and the POE_TX_N carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_N differential signal in the second group of TX differential signals and the positive terminal of the DC system power supply;

[0016] The second LC circuit is used to decouple and demodulate the second group of RX differential signals from the external DC drive power supply into an active Ethernet RX carrier signal; wherein, the POE_RX_N carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_N differential signal in the second group of TX differential signals and the positive terminal of the DC drive power supply, and the POE_RX_P carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_P differential signal in the second group of TX differential signals and the ground of the DC drive power supply.

[0017] Accordingly, a second aspect of the present invention provides a laser bus controller, the laser bus controller comprising: a power buck module, a processor, an Ethernet slave controller, and an Ethernet and power carrier interface circuit; wherein:

[0018] The power step-down module is used to convert AC power into DC power and output two independent DC system power supplies and DC drive power supplies.

[0019] The processor is used to process the application logic of the Ethernet protocol stack, and to control the supply and disconnection of the DC system power supply and the DC drive power supply through the IO drive switch.

[0020] The Ethernet slave controller is used to process data frames on the Ethernet data link layer and output several Ethernet signals.

[0021] The Ethernet and power carrier interface circuit includes the Ethernet carrier modulation and demodulation circuit described in the first aspect of the present invention, which is used to load a portion of the Ethernet signal onto the DC system power supply and the DC drive power supply in the manner of Ethernet differential signal through the Ethernet carrier modulation and demodulation circuit to form an active Ethernet carrier signal.

[0022] Optionally, the power step-down module includes an AC power input module, a first AC-to-DC transformer, and a second AC-to-DC transformer; wherein:

[0023] The AC power input module is used to transmit the input AC power to the first AC-to-DC transformer and the second AC-to-DC transformer;

[0024] The first AC-to-DC transformer is used to convert the AC power supplied by the AC power input module into a set of independent DC system power supplies;

[0025] The second AC-to-DC transformer is used to convert the AC power supplied by the AC power input module into a set of independent DC drive power supplies.

[0026] Optionally, the Ethernet slave controller includes a first MII port, a second MII port, a third MII port, and a fourth MII port, which respectively output a first Ethernet signal, a second Ethernet signal, a third Ethernet signal, and a fourth Ethernet signal.

[0027] Optionally, the Ethernet and power carrier interface circuit further includes a first physical layer chip, a second physical layer chip, a third physical layer chip, a fourth physical layer chip, a first isolation transformer, a second isolation transformer, a third isolation transformer, and a fourth isolation transformer;

[0028] The first Ethernet signal of the first MII port of the Ethernet slave controller is connected to the RJ45 standard Ethernet interface through the first physical layer chip and the first isolation transformer to realize a single network port design.

[0029] The second Ethernet signal of the second MII port of the Ethernet slave controller is connected to the RJ45 standard Ethernet interface through the second physical layer chip and the second isolation transformer to realize a single output port design.

[0030] The third Ethernet signal of the third MII port of the Ethernet slave controller is loaded onto the DC system power supply and the DC drive power supply in the form of an Ethernet differential signal through an Ethernet carrier modulation and demodulation circuit to form an active Ethernet carrier signal.

[0031] The fourth Ethernet signal of the fourth MII port of the Ethernet slave controller is integrated with the DC system power supply and the DC drive power supply into the terminal via active Ethernet to form an active Ethernet carrier signal.

[0032] Accordingly, a third aspect of the present invention provides a laser process control system, the laser process control system comprising: a laser processing equipment, the laser processing equipment comprising the laser bus controller, laser process controller, laser processing output head, Z-axis servo height adjustment driver, laser, and laser peripheral equipment as described in the second aspect of the present invention; wherein:

[0033] The laser bus controller is used to provide several traditional Ethernet communication methods and several active Ethernet carrier communication methods;

[0034] The laser process controller communicates with the laser processing output head, the Z-axis servo height adjustment driver, and the laser peripheral equipment via active Ethernet carrier communication; the laser process controller communicates with the laser via traditional Ethernet communication.

[0035] The laser process controller automatically adjusts and calibrates based on information fed back from the Z-axis follow-up height driver of the laser processing output head, the laser, and the laser peripheral equipment, thereby achieving unified and integrated control of the laser processing output head, the Z-axis follow-up height driver, the laser, and the laser peripheral equipment.

[0036] Optionally, the laser process control system further includes: a system control device and a motion control device. The system control device is electrically connected to the motion control device and the laser processing equipment, respectively, and is used to complete on-site debugging of human-machine interface interaction, visual monitoring and production task planning, as well as path planning for the servo driver of the motion control device and calling the laser process controller of the laser processing equipment.

[0037] The motion control device is used to complete the position or speed control of trajectory planning and realize the corresponding processing motion path.

[0038] Compared with existing technologies, the Ethernet carrier modulation and demodulation circuit, laser bus controller, and system provided in this invention integrate a dual-isolation power supply Ethernet carrier modulation and demodulation circuit, comprising: a network isolation unit and a coupling modulation and demodulation unit; wherein: the network isolation unit is used to electrically isolate the first group of Ethernet TX differential signals and the first group of Ethernet RX differential signals to obtain isolated second group of TX differential signals and second group of RX differential signals; the coupling modulation and demodulation unit is used to couple and modulate the second group of TX differential signals with an external DC system power supply to form an active Ethernet TX carrier signal, and to decouple and demodulate the second group of RX differential signals with an external DC drive power supply to form an active Ethernet RX carrier signal. Therefore, using an Ethernet carrier modulation and demodulation circuit with integrated dual-isolation power supply simplifies the electrical wiring, reduces power supply interference to laser equipment, and improves the integration and communication speed of laser equipment. This solves the problems of traditional industrial Ethernet buses not supporting power supply, requiring separate power supplies for communication between devices and boards, resulting in high costs, complex wiring, easy installation errors, and difficulty in troubleshooting. Attached Figure Description

[0039] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0040] Figure 1 This is a schematic diagram of the structure of an Ethernet carrier modulation and demodulation circuit provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of an Ethernet carrier modulation and demodulation circuit provided in an embodiment of the present invention;

[0042] Figure 3 This is a circuit diagram of an Ethernet carrier modulation and demodulation circuit provided in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the structure of a laser bus controller provided in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of a laser process control system provided in an embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the specific structure of a laser bus controller provided in an embodiment of the present invention.

[0046] Explanation of key component symbols:

[0047]

[0048] Detailed Implementation

[0049] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0051] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] In one embodiment, such as Figure 1 As shown, the present invention provides an Ethernet carrier modulation and demodulation circuit 11, which integrates dual-isolation power supply and includes: a network isolation unit 111 and a coupling modulation and demodulation unit 112; wherein:

[0053] The network isolation unit 111 is used to electrically isolate the first group of TX differential signals and the first group of RX differential signals of the Ethernet to obtain the isolated second group of TX differential signals and the second group of RX differential signals.

[0054] The coupling modulation and demodulation unit 112 is used to couple and modulate the second group of TX differential signals with the external DC system power supply 21 into an active Ethernet (POE, Power Over Ethernet) TX carrier signal, and to decouple and demodulate the second group of RX differential signals with the external DC drive power supply 22 into an active Ethernet RX carrier signal.

[0055] In this embodiment, an Ethernet carrier modulation and demodulation circuit with integrated dual-isolation power supply is used, comprising: a network isolation unit and a coupling modulation and demodulation unit; wherein: the network isolation unit is used to electrically isolate the first group of Ethernet TX differential signals and the first group of Ethernet RX differential signals to obtain isolated second group of TX differential signals and second group of Ethernet RX differential signals; the coupling modulation and demodulation unit is used to couple and modulate the second group of TX differential signals with an external DC system power supply to form an active Ethernet TX carrier signal, and to decouple and demodulate the second group of RX differential signals with an external DC drive power supply to form an active Ethernet RX carrier signal. Therefore, using an Ethernet carrier modulation and demodulation circuit with integrated dual-isolation power supply simplifies the electrical wiring, reduces power supply interference to the laser equipment, and improves the integration and communication speed of the laser equipment. This solves the problems of traditional industrial Ethernet buses not supporting power supply, requiring a separate power supply for communication between devices and boards, resulting in high costs, complex wiring, easy installation errors, and difficulty in troubleshooting.

[0056] In one embodiment, such as Figure 2 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes an anti-static protection unit 113, which is used to protect the first group of Ethernet TX differential signals and the second group of Ethernet RX differential signals from external electrostatic surge pulse interference and lightning strike interference, and to quickly discharge to ground when subjected to electrostatic surge pulse interference.

[0057] As an example, such as Figure 3 As shown, the first group of TX differential signals includes ECATP_TX_P differential signal and ECATP_TX_N differential signal, and the first group of RX differential signals includes ECATP_RX_P differential signal and ECATP_RX_N differential signal.

[0058] The anti-static protection unit 113 includes a first port 1131, a second port 1132, a third port 1133, and a fourth port 1134. The first port 1131 is connected to the ECATP_TX_P differential signal terminal in the first group of TX differential signals, the second port 1132 is connected to the ECATP_RX_N differential signal terminal in the first group of RX differential signals, the third port 1133 is connected to the ECATP_TX_N differential signal terminal in the first group of TX differential signals, and the fourth port 1134 is connected to the ECATP_RX_P differential signal terminal in the first group of RX differential signals.

[0059] As an example, the anti-static protection unit 113 includes an anti-static protection TVS diode D23.

[0060] In one embodiment, such as Figure 2 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes a terminal matching circuit 114, which is used to avoid reflected signals during network communication.

[0061] Specifically, such as Figure 3 As shown, the terminal matching circuit 114 includes: a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, and a first decoupling capacitor C1 and a second decoupling capacitor C2; wherein:

[0062] One end of the first resistor R1 is connected to the ECATP_TX_P differential signal terminal in the first group of TX differential signals, and the other end of the first resistor R1 is connected to the first decoupling capacitor C1 and then grounded; one end of the second resistor R2 is connected to the ECATP_TX_N differential signal terminal in the first group of TX differential signals, and the other end of the second resistor R2 is connected to the first decoupling capacitor C1 and then grounded.

[0063] One end of the third resistor R3 is connected to the ECATP_RX_P differential signal terminal in the first group of RX differential signals, and the other end of the third resistor R3 is connected to the second decoupling capacitor C2 and then grounded; one end of the fourth resistor R4 is connected to the ECATP_RX_P differential signal terminal in the first group of RX differential signals, and the other end of the fourth resistor R4 is connected to the second decoupling capacitor C2 and then grounded.

[0064] In one embodiment, such as Figure 2 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes a power supply voltage regulator unit 115, which is electrically connected to the network isolation unit 111 and is used to stabilize the power supply of the network isolation unit 111.

[0065] As an example, such as Figure 3 As shown, the power supply regulation unit 115 includes: a first inductor L1, a third capacitor C3, and a fourth capacitor C4; wherein, one end of the first inductor L1 is connected to the reference voltage terminal VCC, the other end of the first inductor L1 is connected to the network isolation unit 111, and the other end of the first inductor L1 is connected to the third capacitor C3 and then grounded; one end of the fourth capacitor C4 is connected to the network isolation unit 111, and the other end of the fourth capacitor C4 is grounded.

[0066] In one embodiment, the network isolation unit 111 is used to electrically isolate the first group of Ethernet TX differential signals and the first group of Ethernet RX differential signals to obtain the isolated second group of TX differential signals and the second group of RX differential signals.

[0067] Specifically, such as Figure 3 As shown, the network isolation unit 111 includes a first isolation subunit 1111 and a second isolation subunit 1112; wherein:

[0068] The first isolation subunit 1111 is used to output the second group of isolated TX differential signals, the second group of TX differential signals including 2_TX_P differential signals and 2_TX_N differential signals; wherein:

[0069] The first isolation subunit 1111 includes a first pin A1, a second pin A2, a third pin A3, a fourteenth pin A14, a fifteenth pin A15, and a sixteenth pin A16. The first pin A1 is connected to the ECATP_TX_P differential signal terminal in the first group of TX differential signals. The third pin A3 is connected to the ECATP_TX_N differential signal terminal in the first group of TX differential signals. The second pin A2 is connected to the power supply regulator unit 115, specifically, to the other end of the first inductor L1 of the power supply regulator unit 115. The fourteenth pin A14 is used to output the 2_TX_N differential signal in the second group of TX differential signals after isolation by the first isolation subunit 1111. The sixteenth pin A16 is used to output the 2_TX_P differential signal in the second group of TX differential signals after isolation by the first isolation subunit 1111. The fifteenth pin A15 is connected to ground via the fifth resistor R5 and the fifth capacitor C5.

[0070] The second isolation subunit 1112 is used to output the second group of isolated RX differential signals, which includes 2_RX_P differential signals and 2_RX_N differential signals; wherein:

[0071] The second isolation subunit 1112 includes a sixth pin A6, a seventh pin A7, an eighth pin A8, a ninth pin A8, a tenth pin A10, and an eleventh pin A11. The sixth pin A6 is connected to the ECATP_RX_P differential signal terminal in the first group of RX differential signals. The eighth pin A8 is connected to the ECATP_RX_N differential signal terminal in the first group of RX differential signals. The seventh pin A7 is connected to the power supply regulator unit 115; specifically, the seventh pin A7 is connected to the third capacitor C3 and the fourth capacitor C4 of the power supply regulator unit 115 and then grounded. The ninth pin A9 is used to output the 2_RX_N differential signal in the second group of RX differential signals after isolation by the second isolation subunit 1112. The eleventh pin A11 is used to output the 2_RX_P differential signal in the second group of RX differential signals after isolation by the second isolation subunit 1112. The tenth pin A10 is connected to ground via the sixth resistor R6 and the fifth capacitor C5.

[0072] As an example, the network isolation unit 111 includes a network isolation transformer U12.

[0073] In this embodiment, by setting a network isolation unit in the Ethernet carrier modulation and demodulation circuit, the first group of TX differential signals and the first group of RX differential signals of the Ethernet are electrically isolated, so that the signals of the device and the external connection cable are electrically isolated, which can suppress common mode and differential mode noise and EMC (Electromagnetic Compatibility) problems.

[0074] In one embodiment, such as Figure 2 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes a differential signal protection unit 116, which is electrically connected to the network isolation unit 111 and is used to protect the two differential signals of the second TX differential signal and the second RX differential signal output by the network isolation unit 111.

[0075] Specifically, such as Figure 3 As shown, the differential signal protection unit 116 includes a first ceramic gas discharge tube D21 and a second ceramic gas discharge tube D22.

[0076] The two ends of the first ceramic gas discharge tube D21 are respectively connected to the fourteenth pin A14 and the sixteenth pin A16 of the network isolation unit 111 to protect the 2_TX_N differential signal in the isolated second group of TX differential signals output by the fourteenth pin A14 and the 2_TX_P differential signal in the isolated second group of TX differential signals output by the sixteenth pin A16.

[0077] The two ends of the second ceramic gas discharge tube D22 are respectively connected to the ninth pin A9 and the eleventh pin A11 of the network isolation unit 111 to protect the 2_RX_N differential signal in the isolated second group of RX differential signals output by the ninth pin A9 and the 2_RX_P differential signal in the isolated second group of RX differential signals output by the eleventh pin A11.

[0078] In one embodiment, such as Figure 2 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes a coupling unit 117, which is used to couple the two differential signals of the second set of TX differential signals and the second set of RX differential signals output by the network isolation unit 111 to the coupling modulation and demodulation unit 112.

[0079] Specifically, such as Figure 3 As shown, the coupling unit 117 includes a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, and a ninth capacitor C9; wherein:

[0080] The sixth capacitor C6 is connected to the sixteenth pin A16 of the network isolation unit 111, and couples the 2_TX_P differential signal in the isolated second group of TX differential signals output from the sixteenth pin A16 to the coupling modulation and demodulation unit 112.

[0081] The seventh capacitor C7 is connected to the fourteenth pin A14 of the network isolation unit 111, and couples the 2_TX_N differential signal in the isolated second group of TX differential signals output from the fourteenth pin A14 to the coupling modulation and demodulation unit 112.

[0082] The eighth capacitor C8 is connected to the eleventh pin A11 of the network isolation unit 111, and couples the 2_RX_P differential signal in the isolated second group of RX differential signals output by the eleventh pin A11 to the coupling modulation and demodulation unit 112.

[0083] The ninth capacitor C9 is connected to the ninth pin of the network isolation unit 111, and couples the 2_RX_N differential signal in the isolated second group of RX differential signals output by the ninth pin A9 to the coupling modulation and demodulation unit 112.

[0084] In one embodiment, the coupling modulation and demodulation unit 112 is used to couple and modulate the second group of TX differential signals with the external DC system power supply 21 into an active Ethernet TX carrier signal, and to decouple and demodulate the second group of RX differential signals with the external DC drive power supply 22 into an active Ethernet RX carrier signal.

[0085] Specifically, such as Figure 3 As shown, the coupling modulation and demodulation unit 112 includes: a first LC circuit 1121 and a second LC circuit 1122.

[0086] The first LC circuit 1121 is a bidirectional signal transmission circuit. The first LC circuit 1121 includes a second inductor L2, a third inductor L3, and a tenth capacitor C10, used to couple and modulate the second group of TX differential signals with the external DC system power supply 21 into an active Ethernet TX carrier signal (POE_TX carrier signal). The second inductor L2 and the third inductor L3 serve as isolation devices for the DC system power supply 21.

[0087] The POE_TX_P carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_P differential signal (TX+) in the second group of TX differential signals and the DC system power supply 21 ground (System_GND), and the POE_TX_N carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_N differential signal (TX-) in the second group of TX differential signals and the DC system power supply 21 positive terminal (System_Power+).

[0088] The second LC circuit 1122 is a bidirectional signal flow circuit. The second LC circuit 1122 includes a fourth inductor L4, a fifth inductor L5, and an eleventh capacitor C11, used to decouple and demodulate the second group of RX differential signals from the external DC drive power supply 22 into an active Ethernet RX carrier signal (POE_RX carrier signal). The fourth inductor L4 and the fifth inductor L5 serve as isolation devices for the DC drive power supply 22.

[0089] The POE_RX_N carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_N differential signal (RX-) in the second group of TX differential signals and the positive terminal (Drvier_Power+) of the DC drive power supply 22. The POE_RX_P carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_P differential signal (RX+) in the second group of TX differential signals and the ground terminal (Drvier_GND) of the DC drive power supply 22.

[0090] In this embodiment, by setting a coupling modulation and demodulation unit in the Ethernet carrier modulation and demodulation circuit, the second group of TX differential signals is coupled and modulated with the external DC system power supply to form an active Ethernet TX carrier signal, and the second group of RX differential signals is decoupled and demodulated with the external DC drive power supply to form an active Ethernet RX carrier signal. Thus, the Ethernet carrier modulation and demodulation circuit can integrate dual isolated power supplies, simplifying electrical wiring, reducing power supply interference in laser equipment, and improving the integration and communication speed of laser equipment. This solves the problems of traditional industrial Ethernet buses not supporting power supply, requiring a separate power supply for communication between devices and boards, resulting in high costs, complex wiring, easy installation errors, and difficulty in troubleshooting.

[0091] In one embodiment, such as Figure 3 As shown, the Ethernet carrier modulation and demodulation circuit 11 further includes an isolation capacitor C12, through which the DC drive power supply 22 is connected to ground, thereby improving the anti-interference capability of the DC drive power supply 22.

[0092] Based on the same concept, in one embodiment, such as Figure 4As shown, the present invention also provides a laser bus controller, the laser bus controller 10 comprising: a power buck module 2, a processor 3, an Ethernet slave controller 4, and an Ethernet and power carrier interface circuit 1; wherein:

[0093] The power step-down module 2 is used to convert AC power into DC power and output two independent DC system power supplies 21 and DC drive power supplies 22.

[0094] The processor 3 is used to process the application logic of the Ethernet protocol stack, and to control the supply and disconnection of the DC system power supply 21 and the DC drive power supply 22 through IO (Input / Output) drive switches;

[0095] The Ethernet slave controller 4 is used to process data frames on the Ethernet data link layer and output several Ethernet signals.

[0096] The Ethernet and power carrier interface circuit 1 includes the Ethernet carrier modulation and demodulation circuit 11 described in any of the above embodiments, which is used to load a portion of the Ethernet signal onto the DC system power supply 21 and the DC drive power supply 22 in the form of an Ethernet differential signal through the Ethernet carrier modulation and demodulation circuit 11 to form an active Ethernet carrier signal.

[0097] In this embodiment, the Ethernet carrier modulation and demodulation circuit 11 is the same as the Ethernet carrier modulation and demodulation circuit 11 described in any of the above embodiments. The specific structure and function can be referred to the Ethernet carrier modulation and demodulation circuit 11 described in any of the above embodiments, and will not be repeated here.

[0098] In this embodiment, a laser bus controller is provided, comprising: a power step-down module, a processor, an Ethernet slave controller, and an Ethernet and power carrier interface circuit; wherein: the power step-down module is used to convert AC power to DC power and output two independent DC system power supplies and DC drive power supplies; the processor is used to process the application logic of the Ethernet protocol stack and to control the supply and disconnection of the DC system power supply and DC drive power supply through IO drive switches; the Ethernet slave controller is used to process data frames on the Ethernet data link layer and output several Ethernet signals; the Ethernet and power carrier interface circuit is used to load part of the Ethernet signal onto the DC system power supply and DC drive power supply in the form of Ethernet differential signals through an Ethernet carrier modulation and demodulation circuit to form an active Ethernet carrier signal. This enables the laser bus controller to integrate multi-port industrial Ethernet and dual-isolated power carrier communication, allowing for low-cost and rapid upgrades of current IO-controlled lasers to bus-type lasers, compatible with the bus and IO control interfaces of various laser processing heads. Furthermore, the Ethernet and power carrier interface circuits of the laser bus controller use an integrated dual-isolated power supply Ethernet carrier modulation and demodulation circuit, which simplifies electrical wiring, reduces power supply interference to laser equipment, and improves the integration and communication speed of laser equipment. This solves the problems of traditional industrial Ethernet buses not supporting power supply, requiring separate power supplies for communication between devices and boards, resulting in high costs, complex wiring, easy installation errors, and difficulty in troubleshooting. In particular, high-power lasers and laser processing heads are small in size and have high integration of electronic control boards. In harsh working environments such as high temperature and humidity, equipment vibration, air dust, and complex electromagnetic fields, if external control is achieved through conventional external control I / O signals and power cables, the digital signals and analog signals between devices are not grounded, making it difficult to guarantee the stability and reliability of long-term operation. The I / O control method also affects the synchronization of laser processing, making it difficult to integrate the bus system and implement intelligent real-time closed-loop control. Furthermore, traditional bus laser equipment uses one input and one output dual physical connection ports, which cannot meet the specific bus topology and complex field wiring requirements.

[0099] In one embodiment, the power step-down module 2 is used to convert AC power into two independent DC system power supplies 21 and DC drive power supplies 22 through AC-to-DC conversion.

[0100] Specifically, such as Figure 6 As shown, the power step-down module 2 includes an AC power input module 23, a first AC-to-DC transformer 24, and a second AC-to-DC transformer 25; wherein:

[0101] The AC power input module 23 is electrically connected to the first AC to DC transformer 24 and the second AC to DC transformer 25 respectively, and is used to transmit the input AC power to the first AC to DC transformer 24 and the second AC to DC transformer 25.

[0102] The first AC-to-DC transformer 24 is used to convert the AC power supplied by the AC power input module 23 into a set of independent DC system power supply 21, which supplies power to the control board.

[0103] The second AC-to-DC transformer 25 is used to convert the AC power supplied by the AC power input module 23 into a set of independent DC drive power supplies 22, which supply power to a high-power focusing stepper servo motor or a galvanometer voice coil motor.

[0104] In this embodiment, the AC power is converted to DC power by a power step-down module and output as two independent DC system power supplies and DC drive power supplies. The two independent DC system power supplies and DC drive power supplies can be controlled by the processor through I / O drive switches. The dual isolation independent power supply ensures that the two power supplies are independent and unaffected by interference. The control part is not affected by the drive load. In addition, the different load currents allow for the selection of electrical wires and components to be differentiated, thereby reducing costs.

[0105] In one embodiment, the processor 3 is used to process the application logic of the Ethernet protocol stack, and to control the supply and disconnection of the DC system power supply 21 and the DC drive power supply 22 through the IO drive switch.

[0106] Specifically, such as Figure 6 As shown, the processor 3 includes a communication signal input / output terminal 31, a PWM (Pulse Width Modulation) signal output terminal 32, a serial communication terminal 33, a serial port 34, and a module operation indicator 35; wherein:

[0107] The communication signal input / output terminal 31 is used to output and input several digital signals, as well as several analog signals, to control the laser, specifically including:

[0108] It outputs 16 channels of 24V digital signals to control the laser's interlock emergency stop safety signal, power start signal, remote start button, laser enable, etc.

[0109] The output of two 0-10V analog signals controls the inner and outer ring output power of the dual-output welding laser;

[0110] Input 6 channels of 24V digital signals to collect the power-on status, remote start status, Ready status, and alarm status of the laser;

[0111] Input two 0-10V analog signals to collect the real-time output power of the inner and outer loops of the dual-output laser or the output power of the two single-fiber lasers, which facilitates closed-loop control in the laser control system.

[0112] The PWM signal output terminal 32 is used to output a PWM signal to control the switching of the laser in high-speed pulse mode.

[0113] The serial communication 33 is connected to the laser and reads the laser's detailed status and alarm information in real time. The serial communication 33 includes RS-232 communication and / or RS-485 communication.

[0114] The serial port 34 is used to connect to the Bluetooth module, so that the operating status of the laser device can be viewed in the APP on the mobile phone.

[0115] The module operation indicator light 35 is used to display the operating status of the control module.

[0116] In one embodiment, the Ethernet slave controller 4 is used to process data frames on the Ethernet data link layer and output several Ethernet signals.

[0117] Specifically, such as Figure 6 As shown, the Ethernet slave controller 4 is electrically connected to the processor 3 and the Ethernet and power carrier interface circuit 1 respectively. The Ethernet slave controller 4 and the processor 3 interact through FSMC (Flexible Static Memory Controller) or SPI (Serial Peripheral Interface), and perform bus communication synchronization control with the processor 3 through IRQ interrupt, SYNC0 interrupt, and SYNC1 interrupt.

[0118] The Ethernet slave controller 4 includes a first MII port, a second MII port, a third MII port, and a fourth MII port, which respectively output a first Ethernet signal, a second Ethernet signal, a third Ethernet signal, and a fourth Ethernet signal.

[0119] In one embodiment, the Ethernet and power carrier interface circuit 1 is used to load a portion of the Ethernet signal onto the DC system power supply 21 and the DC drive power supply 22 in the form of an Ethernet differential signal via the Ethernet carrier modulation and demodulation circuit 11, thereby forming an active Ethernet differential carrier signal.

[0120] Specifically, such as Figure 6As shown, the Ethernet and power carrier interface circuit 1 includes a first physical layer (PHY) chip 12, a second physical layer (PHY) chip 13, a third physical layer (PHY) chip 14 and a fourth physical layer (PHY) chip 15, a first isolation transformer 16, a second isolation transformer 17, a third isolation transformer 18, a fourth isolation transformer 19 and an Ethernet carrier modulation and demodulation circuit 11.

[0121] The first Ethernet signal of the first MII port of the Ethernet slave controller 4 is connected to the RJ45 standard Ethernet interface through the first physical layer chip 12 and the first isolation transformer 16 to realize a single network port design.

[0122] The second Ethernet signal of the second MII port of the Ethernet slave controller 4 is connected to the RJ45 standard Ethernet interface through the second physical layer chip 13 and the second isolation transformer 17, realizing a single output port design. This dual-port design allows the laser bus controller to be placed arbitrarily at any slave topology position in the bus system.

[0123] The third Ethernet signal of the third MII port of the Ethernet slave controller 4 is loaded onto the DC system power supply 21 and the DC drive power supply 22 in the form of an Ethernet differential signal through the Ethernet carrier modulation and demodulation circuit 11 to form an active Ethernet carrier signal. It is connected to devices using other buses through the 4pin-M8 terminal, such as the EtherCAT-P bus, which uses the 4pin-M8 terminal to connect to other laser slave devices.

[0124] The fourth Ethernet signal of the fourth MII port of the Ethernet slave controller 4 is integrated with the DC system power supply 21 and the DC drive power supply 22 into an 8-pin-POE M16 terminal via PoE to form an active Ethernet carrier signal for connection to other bus devices.

[0125] In this embodiment, the first and second isolation transformers are connected to an RJ45 standard Ethernet interface, achieving a dual-port design with one input and one output. This allows the laser bus controller to be placed arbitrarily at any slave topology position in the bus system. The two sets of Ethernet differential signals connected to the third isolation transformer are modulated and demodulated by a modulation / demodulation circuit to load the Ethernet signal onto the DC system power supply and DC drive power supply, forming an active Ethernet carrier signal for devices using other buses to connect to other laser slave devices via the 4-pin-M8 terminal. The Ethernet signal from the fourth isolation transformer is integrated with the DC system power supply and DC drive power supply via PoE into an 8-pin-POE M16 terminal, forming an active Ethernet carrier signal for devices using other buses to connect. This enables the laser bus controller to integrate multi-port industrial Ethernet and dual-isolated power supply carrier communication, allowing for low-cost and rapid upgrades of current IO-controlled lasers to bus-type lasers. It is compatible with the bus and IO control interfaces of various laser processing heads and can output several traditional Ethernet signals and several active Ethernet carrier signals, enabling the laser bus controller to simultaneously possess both traditional Ethernet communication and active Ethernet carrier communication modes. Furthermore, the use of an integrated dual-isolated power supply Ethernet carrier modulation and demodulation circuit simplifies electrical wiring, reduces power supply interference to laser equipment, and improves the integration and communication speed of laser equipment.

[0126] Based on the same concept, in one embodiment, such as Figure 5 As shown, the present invention also provides a laser process control system, which includes: a laser processing equipment 100, the laser processing equipment 100 including: a laser bus controller 10, a laser process controller 20, a laser processing output head 30, a Z-axis follow-up height adjustment driver 40, a laser 50, and laser peripheral equipment 60 as described in any of the above embodiments; wherein:

[0127] The laser bus controller 10 is used to provide several traditional Ethernet communication methods and several active Ethernet carrier communication methods;

[0128] The laser process controller 20 communicates with the laser processing output head 30, the Z-axis follow-up height adjustment driver 40, and the laser peripheral equipment 60 via active Ethernet carrier communication; the laser process controller 20 communicates with the laser 50 via conventional Ethernet communication.

[0129] The laser process controller 20 receives information from the laser processing output head 30, the Z-axis follow-up height driver 40, the laser 50, and the laser peripheral equipment 60, and performs automatic tuning and process calibration. This enables unified integrated control of the four major components: the laser processing output head 30, the Z-axis follow-up height driver 40, the laser 50, and the laser peripheral equipment 60, thereby controlling the final quality of laser processing.

[0130] In this embodiment, the laser bus controller 10 is the same as the laser bus controller 10 described in any of the above embodiments. The specific structure and function can be referred to the laser bus controller 10 described in any of the above embodiments, and will not be repeated here.

[0131] In this embodiment, a laser process control system is provided, which realizes unified integrated control of four major components: the laser processing output head, the Z-axis follow-up height adjustment driver, the laser, and the laser peripheral equipment, thereby controlling the final quality of laser processing.

[0132] Traditional bus-type laser welding or cutting systems consist of a control system, machine tool, laser, processing head (cutting head or welding head), and peripheral auxiliary boards. These components are supplied by different manufacturers, and integrators assemble them, making debugging complex. To meet the diverse needs of customers in different application scenarios, and given the variety of equipment models and laser processing parameters, significant time and manpower are required for machine and system debugging. For example, laser power, output frequency and duty cycle; cutting head focus and spot size, nozzle size, cutting gas pressure, collimating lens, focusing lens, and protective lens temperature; cutting height and real-time control of the height adjuster; laser power and output waveform for welding; welding galvanometer and welding head X-axis and Y-axis oscillation frequency, amplitude, and deflection angle—all these are crucial parameters affecting the laser processing technology. Currently, there is no single control board or process library for these parameters. Without a simple laser processing debugging tool or method, it is difficult to achieve a bright surface when cutting thick plates, hindering the improvement of processing speed and efficiency. In welding applications, the quality and finish of the weld pool are difficult to control, relying almost entirely on the engineer's experience and usage habits, making it impossible to guarantee consistent machine debugging. This invention provides a laser process control system that integrates the control of four main components—the laser processing output head, the Z-axis servo height adjustment driver, the laser, and the laser peripheral equipment—to ensure the final quality of laser processing. This solves the aforementioned technical problems in the laser processing process.

[0133] Specifically, the laser peripheral device 60 includes a CCD camera, a protective air valve, a cold water valve, a solenoid valve, a relay, and / or a red light indicator switch.

[0134] The laser process controller 20, as the master station device, communicates with the laser processing output head 30, the Z-axis follow-up height driver 40, and the laser peripheral equipment 60. At the same time, it connects to the 8-pin-POE M16 terminal of the laser bus controller 10 to provide DC system power and DC drive power. The 8-pin-POE M16 terminal has good sealing performance, is easy to install, and is foolproof.

[0135] The output power, output delay, output frequency duty cycle, and laser pump source combination configuration switch of the laser 50 are accessible to the laser process controller 20. The XY galvanometer swing amplitude, rotation angle, scanning frequency, scanning pattern, scanning start switch, and synchronization time of the XY galvanometer cutting head in the laser processing output head 30 are also accessible to the laser process controller 20. Furthermore, the focus control of the cutting head, the change in spot size, the nozzle model, the temperature, humidity, and pressure sensor information inside the cutting head, and the processing distance obtained by the capacitance sensor are all accessible to the laser process controller 20. The height position value of the Z-axis follow-up height adjustment driver 40 is fed back to the laser process controller 20. The cutting and welding seam information collected by the CCD camera in the laser peripheral device 60 is transmitted to the laser process controller 20. The external processing air pressure and water pressure control, and the red light indicator switch in the laser peripheral device 60 all interact with the laser process controller 20.

[0136] The laser process controller 20 performs dynamic closed-loop correlation and process calibration of performance indicators based on the rated parameters and functional characteristics of each device and different models of the same device before the four-in-one laser processing equipment is shipped. The laser process controller 20 can pre-input matching commonly used processing materials on the market and then automatically generate a process library. The customer's system only needs to call the process library file to start production immediately. During processing, the laser process controller 20 can automatically adjust traditional laser PD alarm parameter threshold settings, power attenuation compensation, focus compensation due to cutting head temperature rise, energy-saving control of laser switching light, and real-time dynamic follow-up control of the Z-axis, thereby improving processing quality and work efficiency without the need for repeated adjustments.

[0137] In one embodiment, such as Figure 5 As shown, the laser process control system further includes a system control device 200 and a motion control device 300. The system control device 200 is electrically connected to the motion control device 300 and the laser processing equipment 100, respectively, and is used to complete on-site debugging of human-machine interface CAD and CAM, visual monitoring and production task planning, as well as path planning for the servo driver of the motion control device 300 and calling the laser process controller 20 of the laser processing equipment 100.

[0138] The motion control device 300 is used to complete the position or speed control of trajectory planning and realize the corresponding processing motion path.

[0139] The laser processing equipment 100 is used to achieve unified integrated control of four major components: the laser processing output head 30, the Z-axis follow-up height adjustment driver 40, the laser 50, and the laser peripheral equipment 60, thereby controlling the final quality of laser processing.

[0140] The system control device 200 acts as the master system, while the motion control device 300 and the laser processing device 100 act as slave stations, communicating via traditional Ethernet. For laser welding applications, the motion control device 300 uses a 6-axis robotic arm; for laser cutting applications, a multi-axis bus servo machine tool is used. The laser processing device 100 encompasses all laser and laser-related equipment, all uniformly controlled by the laser process controller 20. The laser process controller 20 controls the laser 50, the laser processing output head 30 (cutting head or galvanometer welding head), and the Z-axis follow-up height adjustment driver 40.

[0141] In this embodiment, a laser process control system is provided. Based on the traditional laser cutting or welding system, the laser processing system is independently divided into two parts: a servo motor drive shaft control device and a laser processing device. This facilitates high system integration, modular and independent management, rapid setting of machine adjustment parameters, and ensures consistency of the processing technology.

[0142] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An Ethernet carrier modulation and demodulation circuit, characterized in that, The Ethernet carrier modulation and demodulation circuit integrates a dual-isolation power supply, including: a network isolation unit and a coupling modulation and demodulation unit; wherein: The network isolation unit is used to electrically isolate the first group of TX differential signals and the first group of RX differential signals of the Ethernet, so as to obtain the isolated second group of TX differential signals and the second group of RX differential signals. The coupling modulation and demodulation unit is used to couple and modulate the second group of TX differential signals with an external DC system power supply into an active Ethernet TX carrier signal, and to decouple and demodulate the second group of RX differential signals with an external DC drive power supply into an active Ethernet RX carrier signal.

2. The Ethernet carrier modulation and demodulation circuit according to claim 1, characterized in that, The Ethernet carrier modulation and demodulation circuit also includes a power supply voltage regulator unit, which is electrically connected to the network isolation unit and is used to stabilize the power supply to the network isolation unit.

3. The Ethernet carrier modulation and demodulation circuit according to claim 2, characterized in that, The Ethernet carrier modulation and demodulation circuit also includes a terminal matching circuit, which is electrically connected to the power supply voltage regulator unit and is used to avoid reflected signals during network communication.

4. The Ethernet carrier modulation and demodulation circuit according to claim 3, characterized in that, The Ethernet carrier modulation and demodulation circuit also includes an anti-static protection unit, which is electrically connected to the terminal matching circuit. It is used to protect the first group of Ethernet TX differential signals and the second group of Ethernet RX differential signals from external electrostatic surge pulse interference and lightning strike interference, and to quickly discharge to ground when subjected to electrostatic surge pulse interference.

5. The Ethernet carrier modulation and demodulation circuit according to claim 1, characterized in that, The network isolation unit outputs a second set of isolated TX differential signals, wherein the second set of TX differential signals includes 2_TX_P differential signals and 2_TX_N differential signals; and outputs a second set of isolated RX differential signals, wherein the second set of RX differential signals includes 2_RX_P differential signals and 2_RX_N differential signals.

6. The Ethernet carrier modulation and demodulation circuit according to claim 5, characterized in that, The Ethernet carrier modulation and demodulation circuit further includes a differential signal protection unit, which is electrically connected to the network isolation unit and is used to protect the two differential signals output by the network isolation unit: the second TX differential signal and the second RX differential signal.

7. The Ethernet carrier modulation and demodulation circuit according to claim 5, characterized in that, The Ethernet carrier modulation and demodulation circuit further includes a coupling unit, which is used to couple two sets of differential signals, namely the second set of TX differential signals and the second set of RX differential signals, output by the network isolation unit, to the coupling modulation and demodulation unit.

8. The Ethernet carrier modulation and demodulation circuit according to claim 7, characterized in that, The coupling modulation and demodulation unit includes: a first LC circuit and a second LC circuit; The first LC circuit is used to couple and modulate the second group of TX differential signals with an external DC system power supply into an active Ethernet TX carrier signal; wherein, the POE_TX_P carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_P differential signal in the second group of TX differential signals and the DC system power supply ground, and the POE_TX_N carrier signal in the active Ethernet TX carrier signal is coupled to the 2_TX_N differential signal in the second group of TX differential signals and the positive terminal of the DC system power supply; The second LC circuit is used to decouple and demodulate the second group of RX differential signals from the external DC drive power supply into an active Ethernet RX carrier signal; wherein, the POE_RX_N carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_N differential signal in the second group of TX differential signals and the positive terminal of the DC drive power supply, and the POE_RX_P carrier signal in the active Ethernet RX carrier signal is coupled to the 2_RX_P differential signal in the second group of TX differential signals and the ground of the DC drive power supply.

9. A laser bus controller, characterized in that, The laser bus controller includes: a power step-down module, a processor, an Ethernet slave controller, and Ethernet and power carrier interface circuits; wherein: The power step-down module is used to convert AC power into DC power and output two independent DC system power supplies and DC drive power supplies. The processor is used to process the application logic of the Ethernet protocol stack, and to control the supply and disconnection of the DC system power supply and the DC drive power supply through the IO drive switch. The Ethernet slave controller is used to process data frames on the Ethernet data link layer and output several Ethernet signals. The Ethernet and power carrier interface circuit includes an Ethernet carrier modulation and demodulation circuit as described in any one of claims 1 to 8, used to load a portion of the Ethernet signal onto the DC system power supply and the DC drive power supply in the form of an Ethernet differential signal through the Ethernet carrier modulation and demodulation circuit, thereby forming an active Ethernet carrier signal.

10. The laser bus controller according to claim 9, characterized in that, The power step-down module includes an AC power input module, a first AC-to-DC transformer, and a second AC-to-DC transformer; wherein: The AC power input module is used to transmit the input AC power to the first AC-to-DC transformer and the second AC-to-DC transformer; The first AC-to-DC transformer is used to convert the AC power supplied by the AC power input module into a set of independent DC system power supplies; The second AC-to-DC transformer is used to convert the AC power supplied by the AC power input module into a set of independent DC drive power supplies.

11. The laser bus controller according to claim 9, characterized in that, The Ethernet slave controller includes a first MII port, a second MII port, a third MII port, and a fourth MII port, which respectively output a first Ethernet signal, a second Ethernet signal, a third Ethernet signal, and a fourth Ethernet signal.

12. The laser bus controller according to claim 11, characterized in that, The Ethernet and power carrier interface circuit also includes a first physical layer chip, a second physical layer chip, a third physical layer chip, a fourth physical layer chip, a first isolation transformer, a second isolation transformer, a third isolation transformer, and a fourth isolation transformer; The first Ethernet signal of the first MII port of the Ethernet slave controller is connected to the RJ45 standard Ethernet interface through the first physical layer chip and the first isolation transformer to realize a single network port design. The second Ethernet signal of the second MII port of the Ethernet slave controller is connected to the RJ45 standard Ethernet interface through the second physical layer chip and the second isolation transformer to realize a single output port design. The third Ethernet signal of the third MII port of the Ethernet slave controller is loaded onto the DC system power supply and the DC drive power supply in the form of an Ethernet differential signal through an Ethernet carrier modulation and demodulation circuit to form an active Ethernet carrier signal. The fourth Ethernet signal of the fourth MII port of the Ethernet slave controller is integrated with the DC system power supply and the DC drive power supply into the terminal via active Ethernet to form an active Ethernet carrier signal.

13. A laser process control system, characterized in that, The laser process control system includes: a laser processing equipment, the laser processing equipment comprising: a laser bus controller, a laser process controller, a laser processing output head, a Z-axis servo height adjustment driver, a laser, and laser peripheral equipment as described in any one of claims 9 to 12; wherein: The laser bus controller is used to provide several traditional Ethernet communication methods and several active Ethernet carrier communication methods; The laser process controller communicates with the laser processing output head, the Z-axis servo height adjustment driver, and the laser peripheral equipment via active Ethernet carrier communication; the laser process controller communicates with the laser via traditional Ethernet communication. The laser process controller automatically adjusts and calibrates based on information fed back from the Z-axis follow-up height driver of the laser processing output head, the laser, and the laser peripheral equipment, thereby achieving unified and integrated control of the laser processing output head, the Z-axis follow-up height driver, the laser, and the laser peripheral equipment.

14. The laser process control system according to claim 13, characterized in that, The laser process control system further includes: a system control device and a motion control device. The system control device is electrically connected to the motion control device and the laser processing equipment, respectively, and is used to complete on-site debugging of human-machine interface interaction, visual monitoring and production task planning, as well as path planning for the servo driver of the motion control device and calling the laser process controller of the laser processing equipment. The motion control device is used to complete the position or speed control of trajectory planning and realize the corresponding processing motion path.

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