Control interface box for PSM multi-module high-voltage power supply control system

Abstract

The invention relates to the technical field of power electronics, in particular to a control interface box for a PSM multi-module high-voltage power supply control system, which comprises a signal backboard, a photoelectric conversion circuit board, a plug connector circuit board and an LED circuit board, the signal output end of the photoelectric conversion circuit board is electrically connected with the plug connector circuit board through the signal backboard, and the signal output end of the photoelectric conversion circuit board is electrically connected with the plug connector circuit board through the LED circuit board. The photoelectric conversion circuit board is used for receiving an external optical signal and converting the external optical signal into an electric signal; the plug connector circuit board is used for receiving the electric signal from the photoelectric conversion circuit board and converting the electric signal into a signal format which can be identified by external equipment and outputting the signal format; the photoelectric conversion circuit board and the plug connector circuit board are connected through the signal backboard, efficient conversion and reliable transmission of optical signals and electric signals are achieved, and the problem of electromagnetic interference caused by complex wiring is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to a control interface box for a PSM multi-module high-voltage power supply control system. Background Art

[0002] HL-3 is a large-scale magnetic confinement nuclear fusion tokamak device newly built in my country. In the physical experiments of the tokamak device, heating experiments such as electron cyclotron, low-noise, and neutral beam injection are usually carried out to obtain relevant physical experimental data. The key components of the heating system include gyrotrons, klystrons, and neutral beam ion sources. These loads require high-voltage power supplies to provide stable high-voltage support. High-voltage power supplies generally adopt a PSM topology. Each set of high-voltage power supplies consists of hundreds of modules, and the capacity is usually MW level, and can even exceed tens of MW.

[0003] The overall structure of the heating system is relatively complex, containing multiple components, and the high-voltage power supply is connected to loads such as gyrotrons, klystrons, and neutral beam ion sources through long lines. In actual operation, each component is prone to short-circuit sparking, and the sparking current can be as high as thousands of amperes. In order to achieve the control and regulation of the high-voltage power supply, fully controlled switching devices such as IGBTs are usually used, and each high-voltage power supply needs to be equipped with hundreds of IGBT devices. There are dozens of high-voltage power supply equipment in the entire high-voltage power supply hall, and the problem of electromagnetic interference between equipment is particularly prominent.

[0004] The controlled objects of the high-voltage power supply control system are a large number of power modules, and the control system is connected to the controlled objects through optical fibers. On the one hand, a large number of photoelectric signal boards are required to convert photoelectric signals, collect the status signals of the power modules and transmit them to the controller; on the other hand, the controller's command signals need to be converted into optical signals and sent to the power modules through electro-optical signal boards to turn the modules on and off. In addition, there are a large number of circuit boards in the control cabinet, which are mainly installed vertically on metal risers, occupying a large space and are easily affected by electromagnetic interference in an exposed state, reducing the system's integration and anti-interference capabilities.

[0005] Therefore, the current high-voltage power supply control system still needs further improvement in terms of structural optimization, anti-interference capability improvement, and integration to better adapt to the needs of complex experimental environments. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the signal conversion and transmission anti-interference ability in the existing high-voltage power supply control system is insufficient, the system integration is low, and the structure occupies a large space. The purpose is to provide a control interface box for a PSM multi-module high-voltage power supply control system, which realizes the efficient conversion of photoelectric signals and electrical signals, the improvement of the anti-interference ability of signal transmission, the compact design of the system structure and the optimization of the heat dissipation performance.

[0007] The present invention is achieved through the following technical solutions:

[0008] A control interface box for a PSM multi-module high-voltage power supply control system comprises: a signal backplane, a photoelectric conversion circuit board and a connector circuit board, wherein the signal output end of the photoelectric conversion circuit board is electrically connected to the connector circuit board through the signal backplane, the photoelectric conversion circuit board is used to receive external optical signals and convert them into electrical signals, and the connector circuit board is used to receive electrical signals from the photoelectric conversion circuit board and convert them into a signal format recognizable by external equipment for output.

[0009] Furthermore, it also includes a control chassis, the signal backplane, the photoelectric conversion circuit board and the connector circuit board are all arranged in the control chassis, the chassis bottom plate of the control chassis is provided with a plurality of slots for fixing the photoelectric conversion circuit board and the connector circuit board, and the chassis panel of the control chassis is also provided with LED holes adapted to the LED circuit board.

[0010] Furthermore, it also includes a cooling fan and a base support. The bottom and top surfaces of the control chassis are both provided with cooling holes. The cooling fan is arranged on the top of the control chassis, and the wind direction driven by the cooling fan is from bottom to top. The base support is fixedly connected to the lower side surface of the bottom surface of the control chassis and supports the control chassis to be suspended in the air.

[0011] Specifically, a plurality of optical signal receivers and a plurality of LED light guide columns are installed on the photoelectric conversion circuit board, and the plurality of optical signal receivers are respectively arranged corresponding to the optical signal receiving holes, the level signal output end of the photoelectric conversion circuit board is electrically connected to the connector circuit board through the signal backplane, the photoelectric conversion circuit board is located in a circuit board shielding cover, and the panel of the circuit board shielding cover is provided with optical signal receiving holes and light guide column holes adapted to the photoelectric conversion circuit board, and the plurality of optical signal receivers and the plurality of LED light guide columns are respectively arranged corresponding to the optical signal receiving holes and the light guide column holes.

[0012] Specifically, the connector circuit board is provided with a VHDCI68 connector for connecting to an external device, and the VHDCI68 connector passes through the signal output slot. The connector circuit board is located in a circuit board shielding cover, and the circuit board shielding cover is provided with a signal output slot adapted to the signal backplane.

[0013] Optionally, the signal backplane is connected to the optoelectronic conversion circuit board and the connector circuit board through three rows of 96P right-angle connectors; three rows of 96P right-angle bent pin male connectors are connected to the optoelectronic conversion circuit board, three rows of 96P right-angle bent pin male connectors are connected to the connector circuit board, and three rows of 96P right-angle female connectors are connected to the signal backplane.

[0014] Specifically, it also includes an LED circuit board, on which a double-row 64P bull horn female socket and an LED lamp are arranged, the LED lamp is arranged corresponding to the optical signal receiving hole and is electrically connected to the double-row 64P bull horn female socket, and the double-row 64P bull horn female socket is electrically connected to the photoelectric conversion circuit board through a signal backplane and corresponds one-to-one with the optical signal receiver and the LED lamp;

[0015] The signal backplane is provided with a double-row 64P bull horn male connector corresponding to the double-row 64P bull horn female connector. The double-row 64P bull horn male connector is electrically connected to the three-row 96P right-angle female connector through a flat cable. The double-row 64P bull horn male connector is connected to the double-row 64P bull horn female connector on the LED circuit board through a flat cable.

[0016] Optionally, the number of the photoelectric conversion circuit boards is 12, the number of the connector circuit boards is 3, and the number of the three-row 96P right-angle female sockets is 15, of which 12 of the three-row 96P right-angle female sockets are connected to the 12 photoelectric conversion circuit boards, and the other 3 of the three-row 96P right-angle female sockets are connected to the connector circuit board; each of the three-row 96P right-angle female sockets connected to the connector circuit board is respectively connected to four three-row 96P right-angle female sockets connected to the photoelectric conversion circuit board;

[0017] The number of the double-row 64P bull-horn sockets is 3, and they are respectively connected to the 12 three-row 96P right-angle female sockets.

[0018] Specifically, a switching power supply is provided at the bottom of the control chassis, and the switching power supply provides a 5V DC power supply to the chassis backplane, and the switching power supply provides a 220V AC power supply to the cooling fan.

[0019] Optionally, the control chassis is a 6U+2U standard chassis, the cooling fan is arranged in the 2U part, and the signal backplane, the photoelectric conversion circuit board and the connector circuit board are arranged in the 6U part.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] The control interface box in the present invention mainly includes a signal backplane, a photoelectric conversion circuit board and a connector circuit board. The photoelectric conversion circuit board is electrically connected to the connector circuit board through the signal backplane to complete the conversion and transmission of optical signals to electrical signals;

[0022] The present invention realizes efficient conversion and reliable transmission of optical signals and electrical signals by using a signal backplane to connect the photoelectric conversion circuit board and the connector circuit board, thereby avoiding the electromagnetic interference problem caused by complex wiring; by reasonably designing the heat dissipation channel and installing a heat dissipation fan on the top of the chassis, the heat dissipation condition in the chassis is effectively improved, and equipment failure caused by overheating is prevented; through the combined design of the light guide column and the double-row bull-horn connector, the signal status can be visually displayed on the front and back of the chassis, which is convenient for real-time monitoring and maintenance of the operating status. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the accompanying drawings are included in and constitute a part of this specification and do not constitute a limitation of the embodiments of the present invention.

[0024] Figure 1 The figure is a rear elevation view of a control interface box for a PSM multi-module high voltage power supply control system according to the present invention.

[0025] Figure 2 is a front view of a signal backplane according to the present invention.

[0026] Figure 3 The figure is an internal top view of a control interface box for a PSM multi-module high voltage power supply control system according to the present invention.

[0027] Figure 4 It is a schematic diagram of an LED circuit board of a control interface box for a PSM multi-module high-voltage power supply control system according to the present invention.

[0028] Figure 5 It is a schematic structural diagram of the photoelectric conversion circuit board and the connector circuit board according to the present invention.

[0029] Figure 6 It is a schematic diagram of the shielding box of the photoelectric conversion circuit board and the connector circuit board according to the present invention.

[0030] Figure 7 Schematic diagram of a control chassis panel according to the present invention.

[0031] Figure 8 It is a schematic diagram of three rows of 96P right-angle female sockets according to the present invention.

[0032] Figure numerals: 1-optical signal receiver, 2-LED light guide column, 3-three rows of 96P right-angle bent pin male connectors of photoelectric conversion circuit board, 4-photoelectric conversion circuit board, 5-shielding cover of photoelectric conversion circuit board, 6-three rows of 96P right-angle bent pin male connectors of plug-in circuit board, 7-plug-in circuit board, 8-VHDCI68 connector, 9-shielding cover of plug-in circuit board, 10, 11, 12-double-row 64P bull horn female socket, 13-LED hole, 14-power switch, 15-chassis surface Board, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30-three-row 96P right-angle female socket, 31-power socket, 32, 33, 34-double-row 64P bull-horn male connector, 35-switching power supply, 36-card slot, 37-base support, 38-blind plate, 39-electrical signal conversion component, 40-optical electrical conversion component, 41-cooling fan, 42-signal backplane, 43-LED lamp, 44-LED circuit board. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific implementation methods described herein are only used to explain the relevant content, rather than to limit the present invention.

[0034] It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the absence of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] Embodiment 1

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, this embodiment provides a control interface box for a PSM multi-module high-voltage power supply control system, which realizes the conversion of optical signals to electrical signals and their reliable transmission. The structure of the interface box includes: a signal backplane 42, a photoelectric conversion circuit board 4 and a plug-in circuit board 7. The signal output end of the photoelectric conversion circuit board 4 is electrically connected to the plug-in circuit board 7 through the signal backplane 42. The photoelectric conversion circuit board 4 is used to receive external optical signals and convert them into electrical signals. The plug-in circuit board 7 is used to receive electrical signals from the photoelectric conversion circuit board 4 and convert them into signal formats that can be recognized by external devices for output.

[0040] The photoelectric conversion circuit board 4 is dedicated to receiving optical signals from the outside. The photoelectric conversion device converts the optical signal into a corresponding level signal, and the converted level signal is transmitted from the output end of the photoelectric conversion circuit board 4 to the signal backplane 42. As a centralized connection platform, the signal backplane 42 is responsible for receiving the electrical signal of the photoelectric conversion circuit board 4 and accurately transmitting it to the plug-in circuit board 7, while avoiding the electromagnetic interference problem caused by the excessive length of traditional wiring. After receiving the level signal from the signal backplane 42, the plug-in circuit board 7 further converts these signals into a standard signal format recognizable by external devices, such as output through a VHDCI connector.

[0041] The photoelectric conversion circuit board 4 realizes the preliminary conversion of optical signals to electrical signals, the signal backplane 42 is responsible for the transfer and connection of signals, and the connector circuit board 7 further converts the level signal into a signal format recognizable by external devices and outputs it. The control interface box improves the efficiency and reliability of signal processing through modular design, and is particularly suitable for complex PSM multi-module high-voltage power supply control systems, effectively solving the challenges of signal conversion, transmission and anti-interference.

[0042] In order to further describe the structural design and heat dissipation function of the control interface box, this embodiment also proposes the following structure, integrating the signal backplane 42, the optoelectronic conversion circuit board 4 and the connector circuit board 7 into the control chassis, and improving the stability and heat dissipation performance of the system through reasonable layout and additional components.

[0043] The control interface box also includes a control chassis, in which the signal backplane 42, the photoelectric conversion circuit board 4 and the connector circuit board 7 are all arranged. A plurality of card slots 36 for fixing the photoelectric conversion circuit board 4 and the connector circuit board 7 are arranged on the chassis bottom plate of the control chassis. Fixing through the card slots 36 not only facilitates modular installation, but also reduces the displacement and vibration of the circuit board during operation, thereby improving the stability and reliability of the system.

[0044] The shielding cover 5 of the photoelectric conversion circuit board is provided with an optical signal receiving hole and a conduit column hole adapted to the photoelectric conversion circuit board 4 , and the shielding cover 9 of the connector circuit board is also provided with a signal output slot adapted to the connector circuit board 7 .

[0045] The control interface box also includes a cooling fan 41 and a base support 37. The bottom and top surfaces of the control box are both provided with cooling holes. The cooling fan 41 is provided on the top of the control box, and the wind direction driven by the cooling fan 41 is from bottom to top. The cooling channel designed from bottom to top allows the fan to drive air to circulate from bottom to top and take away the heat inside the box. This not only effectively avoids overheating of the equipment, but also prevents dust from accumulating inside the box, thereby extending the life of the equipment.

[0046] The base support is fixedly connected to the bottom and lower side of the control chassis, and supports the control chassis to be suspended in the air, so that air can enter the chassis from the bottom.

[0047] In addition, the control chassis is a 6U+2U standard chassis, and the signal backplane 42, the photoelectric conversion circuit board 4 and the plug-in circuit board 7 are arranged in the 6U part. The 6U part is provided with a card slot 36 for installing and fixing the signal backplane 42, the photoelectric conversion circuit board 4 and the plug-in circuit board 7. The circuit board is further fixed by the limit rail to prevent the connection from being unstable due to vibration or displacement during operation. The 6U part centrally realizes the arrangement and management of the signal processing module to ensure the reliability and maintainability of the system.

[0048] The cooling fan 41 is set in the 2U part. The 2U part shell adopts a heat dissipation net with a shielding effect, which not only effectively reduces the impact of external electromagnetic interference on the internal signal of the chassis, but also achieves a good heat dissipation effect. The cooling fan 41 is installed in the 2U part, and the heat dissipation holes at the bottom and top are designed to form a bottom-to-top air duct. The cooling fan 41 is powered by a 220V AC power supply to continuously remove the heat inside the chassis, effectively prevent overheating and extend the service life of the equipment.

[0049] A switching power supply 35 is provided at the bottom of the control chassis, and the switching power supply 35 provides a 5V DC power supply to the chassis backplane, and the switching power supply 35 provides a 220V AC power supply to the cooling fan 41. The power switch 14 is provided on the chassis panel 15 of the control chassis, so that the user can quickly turn on and off the system. The power socket 31 is located on the signal backplane 42 of the control chassis, and is used to connect an external power supply to provide input power to the switching power supply 35 inside the system.

[0050] According to the installation conditions of the photoelectric conversion circuit board 4 and the connector circuit board 7, a blind plate 38 is designed at the rear of the chassis to shield the unused opening area. The design of the blind plate 38 further improves the shielding performance, while reducing the possibility of dust entering the chassis, and enhancing the safety and durability of the system.

[0051] The shielding cover at the rear of the chassis is the main interface for the system to interact with the outside. The shielding cover 5 of the photoelectric conversion circuit board is provided with a plurality of optical signal receiving holes, which correspond one-to-one with the optical signal receiver 1 of the photoelectric conversion circuit board 4 and are used to receive external optical signals. The shielding cover 9 of the connector circuit board is provided with a signal output slot, and the VHDCI68 connector 8 passes through the slot to realize signal connection with external devices.

[0052] Embodiment 2

[0053] This embodiment describes the specific structure.

[0054] A plurality of optical signal receivers 1 and a plurality of LED light guides 2 are installed on the photoelectric conversion circuit board 4, and the plurality of optical signal receivers 1 are respectively arranged corresponding to the optical signal receiving holes. Each optical signal of the photoelectric conversion circuit board 4 corresponds to an LED lamp, and the LED lamp is equipped with a light guide, and the signal status is displayed to the outside of the control box through the light guide. The level signal output end of the photoelectric conversion circuit board 4 is electrically connected to the plug-in circuit board 7 through the signal backplane 42. The photoelectric conversion circuit board 4 is located in the circuit board shielding cover 5. The photoelectric conversion circuit board 4 and the circuit board shielding cover constitute an optical-to-electrical component 40, which is flexibly installed in the interface box as a whole. The panel of the plug-in circuit board shielding cover 5 is provided with an optical signal receiving hole and a light guide hole adapted to the photoelectric conversion circuit board 4, and the plurality of optical signal receivers 1 and the plurality of LED light guides 2 are respectively arranged corresponding to the optical signal receiving hole and the light guide hole.

[0055] A plurality of optical signal receivers 1 are mounted on the photoelectric conversion circuit board 4 for receiving external optical signals. Each optical signal receiver 1 corresponds to the optical signal receiving hole of the control box one by one to ensure accurate input of the optical signal. After the optical signal is received, it is processed by the photoelectric conversion device to generate a corresponding level signal and connected to the connector circuit board 7 through a connector (such as 9001-11961C00A). The connector signal distribution is as follows:

[0056] A1-A16 pins: converted level signal output;

[0057] A17-A32 pins: LED display signal output;

[0058] B1-B32 pins: power ground signal;

[0059] C31-C32 pins: power positive signal.

[0060] The plug-in circuit board 7 is provided with a VHDCI68 connector 8 for connecting to an external device, and the VHDCI68 connector 8 passes through the signal output slot, and the plug-in circuit board 7 is located in the circuit board shielding cover 9. The plug-in circuit board 7 and the shielding cover 9 constitute an electric-to-electrical signal component 39, which is installed as a whole in the interface box. The plug-in circuit board 7 is provided with a VHDCI68 connector 8, which is used to convert the level signal into a signal format recognizable by the external device, and transmit it to the external device through the signal output slot on the control chassis panel. During the signal connection and transmission process, the plug-in circuit board 7 is protected by the shielding cover 9, which effectively reduces the influence of electromagnetic interference.

[0061] A double-row 64P bull-horn socket and an LED lamp 43 are provided on the LED circuit board 44. The LED lamp 43 is arranged corresponding to the optical signal receiving hole and is electrically connected to the double-row 64P bull-horn socket. The double-row 64P bull-horn socket is electrically connected to the photoelectric conversion circuit board 4 through the signal backplane 42 and corresponds one-to-one with the optical signal receiver 1 and the LED lamp 43, making real-time monitoring of the signal status more intuitive.

[0062] The photoelectric conversion circuit board 4 and the connector circuit board 7 are both installed in independent shielding covers to effectively isolate external electromagnetic interference. According to the size of the circuit board and the position of the connector, the design of the shielding cover ensures the stable installation of the circuit board and seamless connection with other components. The signal backplane 42 realizes efficient transmission of 64 signals through 3 rows of 96P right-angle connectors inside, which correspond one-to-one with the pins of the two circuit board components, ensuring the stability of data processing.

[0063] Embodiment 3

[0064] In this embodiment, the signal connection is realized by three rows of 96P right-angle connectors between the signal backplane 42 and the photoelectric conversion circuit board 4 and the plug-in circuit board 7, and the signal display of the LED lamp is realized by combining with double rows of 64P bull-horn connectors. The signal backplane 42 is connected to the photoelectric conversion circuit board 4 and the plug-in circuit board 7 by three rows of 96P right-angle connectors; the photoelectric conversion circuit board 4 is connected with three rows of 96P right-angle bent pin male connectors 3, the plug-in circuit board 7 is connected with three rows of 96P right-angle bent pin male connectors 6, and the signal backplane 42 is connected with three rows of 96P right-angle female connectors (numbered in the figure: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30).

[0065] The photoelectric conversion circuit board 4 and the plug-in circuit board 7 are connected to the three rows of 96P right-angle female sockets on the signal backplane 42 through three rows of 96P right-angle bent pin male connectors. The output signal of the photoelectric conversion circuit board 4 is transmitted to the signal backplane 42 through three rows of 96P plug-ins. The signal backplane 42 then transfers the signal to the plug-in circuit board 7 to realize the overall transmission closed loop of the signal.

[0066] The signal of the LED lamp 43 is electrically connected to the double-row 64P horn female socket; the signal backplane 42 is provided with a double-row 64P horn male head corresponding to the double-row 64P horn female socket, which is electrically connected through a flat cable, and the double-row 64P horn male head is electrically connected to the three-row 96P right-angle female socket, and the light guide column is connected to the photoelectric conversion circuit board 4 and corresponds to the optical signal receiver 1 one by one. Each LED lamp 43 is electrically connected to the double-row 64P horn female socket, and the signal backplane 42 is provided with a corresponding double-row 64P horn male head. The signal backplane 42 connects the horn male head to the horn female socket through a flat cable. The signal of the light guide column corresponds to the photoelectric conversion circuit board 4 and the optical signal receiver 1 one by one, so that the state change of the optical signal can be intuitively displayed on the LED circuit board 44.

[0067] An example is provided, in which the number of the photoelectric conversion circuit boards 4 is 12, and each photoelectric conversion circuit board 4 is connected to the signal backplane 42 via three rows of 96P right-angle bent pin male connectors.

[0068] The number of the plug-in circuit boards 7 is three. Each plug-in circuit board 7 is connected to the signal backplane 42 via three rows of 96P right-angle bent pin male connectors, and communicates with external devices via the VHDCI68 connector 8 .

[0069] The signal backplane 42 includes 15 three-row 96P right-angle female connectors and 3 double-row 64P male headers.

[0070] 12 three-row 96P right-angle female sockets are connected to 12 photoelectric conversion circuit boards 4, and another 3 three-row 96P right-angle female sockets are connected to the connector circuit board 7; each three-row 96P right-angle female socket connected to the connector circuit board 7 is respectively connected to four three-row 96P right-angle female sockets connected to the photoelectric conversion circuit board 4;

[0071] Each double-row 64P bull-horn socket is connected to the LED display signal of four photoelectric conversion circuit boards 4. Three double-row 64P bull-horn male connectors are respectively connected to 12 three-row 96P right-angle female connectors. Each double-row 64P bull-horn socket is connected to the double-row 64P bull-horn male connector on the signal backplane 42 through a flat cable, and then connected to the LED light display board.

[0072] Signal path and operation process:

[0073] Photoelectric signal processing: External optical signals are input to 12 photoelectric conversion circuit boards 4, and are processed by photoelectric conversion devices to generate level signals. The level signals are output to the signal backplane 42 through three rows of 96P right-angle bent pin male connectors on the photoelectric conversion circuit board 4.

[0074] The signal backplane 42 is relayed: 12 three-row 96P right-angle female sockets (numbered 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 in the figure) receive signals from 12 photoelectric conversion circuit boards 4; 3 three-row 96P right-angle female sockets (numbered 16, 17, 18 in the figure) are connected to the connector circuit board 7, and forward the signal of the photoelectric conversion circuit board 4 to the connector circuit board 7;

[0075] Each of the three rows of 96P right-angle female sockets connected to the connector circuit board 7 forwards the signals of the four photoelectric conversion circuit boards 4 respectively.

[0076] Signal output: The connector circuit board 7 outputs the received level signal to the external device through the VHDCI68 connector 8 to achieve signal format conversion and transmission.

[0077] LED status display: The optical signal status of each optoelectronic conversion circuit board 4 is indicated in real time by the 192 LED lights 43 of the LED light display board and the LED light guide column 2 on the optoelectronic conversion circuit board 4, so the status of the optical signal can be observed in real time in the front and rear directions of the chassis.

[0078] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A control interface box for a PSM multi-module high voltage power supply control system, characterized in that: include: A signal backplane (42), a photoelectric conversion circuit board (4) and a connector circuit board (7), wherein the signal output end of the photoelectric conversion circuit board (4) is electrically connected to the connector circuit board (7) via the signal backplane (42), the photoelectric conversion circuit board (4) is used to receive external optical signals and convert them into electrical signals, and the connector circuit board (7) is used to receive electrical signals from the photoelectric conversion circuit board (4) and convert them into a signal format recognizable by an external device for output.

2. A control interface box for a PSM multi-module high voltage power supply control system according to claim 1, characterized in that: The invention also comprises a control chassis, wherein the signal backplane (42), the photoelectric conversion circuit board (4) and the connector circuit board (7) are all arranged in the control chassis, a chassis bottom plate of the control chassis is provided with a plurality of card slots (36) for fixing the photoelectric conversion circuit board (4) and the connector circuit board (7), and an LED hole (13) adapted to the LED circuit board (44) is also provided on the chassis panel (15) of the control chassis.

3. A control interface box for a PSM multi-module high voltage power supply control system according to claim 2, characterized in that: It also includes a cooling fan (41) and a base support (37), the bottom and top surfaces of the control chassis are both provided with cooling holes, the cooling fan (41) is arranged on the top of the control chassis, and the wind direction driven by the cooling fan (41) is from bottom to top, and the base support (37) is fixedly connected to the lower side surface of the bottom surface of the control chassis and supports the control chassis to be suspended in the air.

4. A control interface box for a PSM multi-module high voltage power supply control system according to claim 2, characterized in that: A plurality of optical signal receivers (1) and a plurality of LED light guide columns (2) are mounted on the photoelectric conversion circuit board (4); a level signal output end of the photoelectric conversion circuit board (4) is electrically connected to the connector circuit board (7) via the signal backplane (42); the photoelectric conversion circuit board (4) is located in a shielding cover (5) of the photoelectric conversion circuit board; a panel of the shielding cover (5) of the photoelectric conversion circuit board is provided with an optical signal receiving hole and a light guide column hole adapted to the photoelectric conversion circuit board (4); and the plurality of optical signal receivers (1) and the plurality of LED light guide columns (2) are respectively arranged corresponding to the optical signal receiving hole and the light guide column hole.

5. The control interface box for a PSM multi-module high voltage power supply control system according to claim 2, characterized in that: The plug-in circuit board (7) is provided with a VHDCI68 connector (8) for connecting to an external device, and the VHDCI68 connector (8) passes through the signal output slot. The plug-in circuit board (7) is located in a shielding cover (9) of the plug-in circuit board, and the shielding cover (9) of the plug-in circuit board is provided with a signal output slot adapted to the signal backplane (42).

6. A control interface box for a PSM multi-module high voltage power supply control system according to claim 2, characterized in that: The signal backplane (42) is connected to the photoelectric conversion circuit board (4) and the connector circuit board (7) via three rows of 96P right-angle connectors; the photoelectric conversion circuit board (4) is connected to three rows of 96P right-angle bent pin male connectors, the connector circuit board (7) is connected to three rows of 96P right-angle bent pin male connectors, and the signal backplane (42) is connected to three rows of 96P right-angle female connectors.

7. A control interface box for a PSM multi-module high voltage power supply control system according to claim 6, characterized in that: It also includes an LED circuit board (44), on which a double-row 64P horn female socket and an LED lamp (43) are arranged, the LED lamp (43) being arranged corresponding to the optical signal receiving hole and electrically connected to the double-row 64P horn female socket, the double-row 64P horn female socket being electrically connected to the photoelectric conversion circuit board (4) through a signal backplane (42) and corresponding one-to-one with the optical signal receiver (1) and the LED lamp (43); The signal backplane (42) is provided with a double-row 64P bull horn male connector corresponding to the double-row 64P bull horn female connector, the double-row 64P bull horn male connector is electrically connected to the three-row 96P right-angle female connector, and the double-row 64P bull horn male connector is connected to the double-row 64P bull horn female connector on the LED circuit board (44) via a flat cable.

8. The control interface box for a PSM multi-module high voltage power supply control system according to claim 7, characterized in that: The number of the photoelectric conversion circuit boards (4) is 12, the number of the plug-in circuit boards (7) is 3, and the number of the three-row 96P right-angle female sockets is 15, wherein 12 of the three-row 96P right-angle female sockets are connected to the 12 photoelectric conversion circuit boards (4), and the other 3 of the three-row 96P right-angle female sockets are connected to the plug-in circuit board (7); each of the three-row 96P right-angle female sockets connected to the plug-in circuit board (7) is respectively connected to four three-row 96P right-angle female sockets connected to the photoelectric conversion circuit board (4); The number of the double-row 64P bull-horn sockets is 3, and they are respectively connected to the 12 three-row 96P right-angle female sockets.

9. The control interface box for a PSM multi-module high voltage power supply control system according to claim 3, characterized in that: A switching power supply (35) is provided at the bottom of the control chassis, and the switching power supply (35) provides a 5V DC power supply to the chassis backplane, and the switching power supply (35) provides a 220V AC power supply to the cooling fan (41).

10. A control interface box for a PSM multi-module high voltage power supply control system according to claim 9, characterized in that: The control chassis is a 6U+2U standard chassis, the cooling fan (41) is arranged in the 2U part, and the signal backplane (42), the photoelectric conversion circuit board (4) and the connector circuit board (7) are arranged in the 6U part.

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