Editable miniature cascade optical path switching device based on nuclear security level DCS (Distributed Control System)

Abstract

The invention discloses an editable micro cascade optical path switching device based on a nuclear security level DCS system, and relates to the technical field of electrical equipment detection, the switching device comprises a plurality of optical switches having a cascade relationship, and a part of pins of the plurality of optical switches respectively form optical path interfaces; the plurality of optical switches are used for forming a plurality of optical paths with different paths through the closed state of each optical switch and the cascade relationship among the optical switches; the optical path interface is used for accessing an optical signal transmitted in a preset optical path and is also used for outputting the optical signal in the preset optical path; the basic problems that different types of basic modules of the security-level DCS system are complex and difficult in optical path switching, long in switching time and large in optical path verification difficulty after switching are solved, automatic switching of any optical path can be achieved by editing a drive table according to requirements, and the system has good expansibility; and the device is small in size, low in power and small in occupied space, can be used in a narrow environment, and improves the quality and efficiency of module inspection.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment detection, and more specifically, to an editable micro cascade optical path switching device based on a nuclear safety-level DCS system. Background Art

[0002] In the safety-level DCS system of a nuclear power plant, short- and medium-distance data communication is carried out through the basic modules in the system, which first convert electrical signals into optical signals and then complete data transmission through optical fibers. Therefore, there are various types of basic modules with photoelectric conversion in the entire system. During the production process of the basic modules, it is necessary to test their photoelectric conversion functions, data transmission and reception functions, etc. However, when testing modules with multiple photoelectric conversion interfaces and different functions, it is necessary to match each optical path with a corresponding receiving end to verify the correctness of the module function. This means that during the inspection process, a large number of optical fiber lines of the test module and the matching module need to be plugged and unplugged many times to match the communication requirements of different modules. Especially when the interface needs to be plugged and unplugged during the test process, a lot of time will be spent on complex optical path switching when inspecting each basic module. At the same time, after the switch, it is necessary to verify whether the optical path has been switched correctly, and the operation is very difficult. This method can no longer match the high-efficiency production model. Summary of the invention

[0003] The purpose of the present invention is to provide an editable micro-cascade optical path switching device based on a nuclear safety-level DCS system, which solves the basic problems of complex and difficult optical path switching of different types of basic modules in the safety-level DCS system, long switching time, and difficulty in optical path verification after switching. Users can also realize automatic switching of any optical path by editing a drive table according to needs, and have good scalability; at the same time, the device is small in size, low in power, and occupies little space, and can be used in a relatively narrow environment, thereby improving the quality and efficiency of module inspection.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] In a first aspect, the present application provides an editable micro cascade optical path switching device based on a nuclear safety-level DCS system, comprising a plurality of optical switches in a cascade relationship, wherein:

[0006] Part of the pins of the plurality of optical switches respectively form optical path interfaces, and the optical path interfaces include an optical signal input port and an optical signal output port;

[0007] Multiple optical switches are used to form multiple optical paths with different paths through the closed state of each optical switch and the cascade relationship between each optical switch; the optical path interface is used to access the optical signal transmitted in the preset optical path and also to output the optical signal in the preset optical path.

[0008] The beneficial effects of the present invention are as follows: in this solution, a preset optical path is formed by a plurality of optical switches in a cascade relationship and the closed state of each optical switch, and then the optical signal is connected through the optical signal input port, and the optical signal transmitted in the preset optical path is output through the optical signal output port, thereby realizing the transmission of the optical signal in different optical paths; in actual use, that is, by setting the closed state of each optical switch to achieve the effect of changing the optical path, the process of repeatedly plugging and unplugging a large number of optical fibers of the test module and the matching module during the inspection process and the situation of plugging and unplugging replacement interfaces during the test process are eliminated, and the basic problems of complex and difficult optical path switching of different types of basic modules of the safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved, and the problem of spending a lot of time on complex optical path switching when inspecting each basic module is avoided.

[0009] In this solution, through the high-speed, low-power, high-reliability, and low-cost optical path switching method, the application requirements of low power consumption and high speed, low cost and intensive space are realized; through the combination of different optical switches, the optical fiber paths required by all the basic modules of the tested safety-level DCS system can be provided; the basic problems of complex and difficult optical path switching of different types of basic modules in the nuclear safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved. In addition, this device has the characteristics of automatic high-speed switching of optical signals, low loss, portability, long service life, small size, low power consumption, strong expansion capability, simple control method, and strong versatility, which meets the needs of optical path switching, automatic testing, etc. of different optical communication modules.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the optical switch is a micro-mechanical dual 1×2 non-self-locking optical switch.

[0012] Furthermore, the number of the above-mentioned optical switches is 18; the number of optical path interfaces is 28, among which the number of optical signal input ports is 4.

[0013] The beneficial effect of adopting the above further solution is that the 28 external optical path interfaces on the device can be directly plugged into optical fibers for use with test cards, tested cards, switches and other equipment.

[0014] Furthermore, the above-mentioned device is also provided with a communication serial port for realizing communication with a plurality of optical switches, and the communication serial port is used to transmit the logic instructions in the preset driving table to each optical switch through a preset protocol.

[0015] The beneficial effect of adopting the above further solution is that the external communication serial port 1 can be an RS485 serial port and adopt the MODBUS industrial protocol to send the command line in the driver table to the editable micro cascade optical path switching device for execution.

[0016] Furthermore, each of the above optical switches is located in a square housing, and each optical path interface extends out of the square housing.

[0017] Furthermore, the square shell is detachably connected to a mounting bracket, and the extension length of the mounting bracket is adjusted through the mounting hole.

[0018] Furthermore, the thickness of the square shell is 1U.

[0019] The beneficial effect of adopting the above further solution is that the main body is designed to be a rectangular shell structure with a height of 1U, and the main body structure is provided with a detachable mounting bracket, the extension length of the bracket can be adjusted through the mounting hole, and can be used in dense spaces.

[0020] Furthermore, the above preset driver table is edited via Excel.

[0021] The beneficial effect of adopting the above further solution is that the driver table can be directly edited by the user through Excel, and after editing, the driver software can package the commands and directly send them for execution.

[0022] Furthermore, in each of the above optical switches:

[0023] The P1 end of the optical switch S1, the P1 end of the optical switch S2, the P1' end and the P3' end of the optical switch S3 respectively form optical signal input ends; the P1' end of the optical switch S1 is connected to the P1 end of the optical switch S4, and the P3' end of the optical switch S1 is connected to the P3' end of the optical switch S5; the P3' end of the optical switch S2 is connected to the P3' end of the optical switch S6, and the P1' end of the optical switch S2 is connected to the P1' end of the optical switch S5; the P1 end of the optical switch S3 is connected to the P3' end of the optical switch S8; the P1' end of the optical switch S4 is connected to the P1' end of the optical switch S6, and the P3' end of the optical switch S4 is connected to the P3' end of the optical switch S7; the P1 end of the optical switch S5 is connected to the P1' end of the optical switch S8, and the P1 end of the optical switch S8 is connected to the optical switch S10 The P1 end of the optical switch S7 is connected to the P1 end of the optical switch S12, and the P1 end of the optical switch S7 is connected to the P1 end of the optical switch S9; the P1' end of the optical switch S10 is connected to the P1 end of the optical switch S13, and the P3' end of the optical switch S10 is connected to the P1 end of the optical switch S14; the P1' end of the optical switch S18 is connected to the P3' end of the optical switch S17, and the P1' end of the optical switch S17 is connected to the P3' end of the optical switch S18, and the P1 end of the optical switch S18 is connected to the P3' end of the optical switch S9; the P1' end of the optical switch S16 is connected to the P1' end of the optical switch S9; the P1' end of the optical switch S12 is connected to the P1' end of the optical switch S11; the P3' end of the optical switch S13 is connected to the P3' end of the optical switch S11.

[0024] In a second aspect, the present application provides an application of an editable micro-cascade optical path switching device based on a nuclear safety-level DCS system in optical path switching as described in any one of the first aspects.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] In the present application, a preset optical path is formed by a plurality of optical switches in a cascade relationship and the closed state of each optical switch, and then the optical signal is connected through the optical signal input port, and the optical signal transmitted in the preset optical path is output through the optical signal output port, thereby realizing the transmission of the optical signal in different optical paths; in actual use, that is, by setting the closed state of each optical switch to achieve the effect of changing the optical path, the process of multiple plugging and unplugging of a large number of optical fiber lines of the test module and the matching module during the inspection process and the situation of plugging and unplugging replacement interfaces during the test process are eliminated, and the basic problems of complex and difficult optical path switching of different types of basic modules of the safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved, and the problem of spending a lot of time on complex optical path switching when inspecting each basic module is avoided.

[0027] In the present application, a high-speed, low-power, high-reliability, low-cost switching optical path method is adopted to achieve the application requirements of low power consumption and high speed, low cost and intensive space; the external structure adopts a 1U shell to meet the application of miniaturized space; the optical path switching is realized by different cascade modes of 18 micro-mechanical dual 1×2 non-self-locking optical switches inside the switching device. The optical switch can achieve 1-to-2. Through the combination of different optical switches, the optical fiber path required by all the basic modules of the tested safety-level DCS system can be provided; the 28 external optical path interfaces on the device can be directly plugged into the optical fiber for use with test cards, tested cards, switches and other equipment; the external 1-way RS485 serial port adopts the MODBUS industrial protocol to send the command line in the driver table to the editable micro-cascade optical path switching device for execution; the module test end is equipped with 4 optical signal input ports, and the user can set the signal path in advance according to the direction of the signal, and then control the state of the switching switch by setting the "1" and "0" commands in the driver table to realize the editability of the optical path switching.

[0028] In the present application, multiple micro-mechanical dual 1×2 non-self-locking optical switches are cascaded, and then the driver table edited by the user is sent to the device for execution through the MODBUS industrial protocol. This method provides users with more operability and higher device scalability. The driver table is edited in the form of an EXCEL table, and only simple learning is required to write the driver instructions. Users can set the switching waiting time according to their needs to ensure the integrity of different signals. When switching the optical path at high speed, the optical signal has almost no loss, and the entire device uses low-power devices. The device is small in size and can be used in a narrow space.

[0029] In the present application, the basic problems of complex and difficult optical path switching of different types of basic modules in the nuclear safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved. In addition, the device has the characteristics of automatic high-speed switching of optical signals, low loss, portability, long service life, small size, low power consumption, strong expansion capability, simple control method, and strong versatility, which meets the needs of optical path switching and automatic testing of different optical communication modules; and the device has been successfully applied to the automatic test system of the basic module of the nuclear safety-level DCS system, and the optical port test efficiency has been improved by 100%. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0031] Figure 1 is a connection diagram of each optical switch in an embodiment of the present invention;

[0032] Figure 2 is a logic schematic diagram of each optical switch in an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the outer shell in an embodiment of the present invention;

[0034] Figure 4 is a schematic diagram of the closed state of each optical switch in one optical path in an embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the closed state of each optical switch in one optical path in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that if the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0042] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1:

[0044] In order to solve the basic problems of complex and difficult optical path switching of different types of basic modules in the current safety-level DCS system, long switching time, and difficulty in optical path verification after switching, and at the same time to avoid the problem of spending a lot of time on complex optical path switching when inspecting each basic module, this embodiment provides an editable micro cascade optical path switching device based on a nuclear safety-level DCS system, including multiple optical switches in a cascade relationship, and the above optical switch is a micro mechanical dual 1×2 non-self-locking optical switch; wherein:

[0045] Part of the pins of the plurality of optical switches respectively form an optical path interface, and the optical path interface includes an optical signal input port and an optical signal output port; the plurality of optical switches are used to form optical paths with multiple different paths through the closed state of each optical switch and the cascade relationship between each optical switch; the optical path interface is used to access the optical signal transmitted in the preset optical path, and is also used to output the optical signal in the preset optical path.

[0046] Among them, a preset optical path is formed by a plurality of optical switches in a cascade relationship and the closed state of each optical switch, and then the optical signal is connected through the optical signal input port, and the optical signal transmitted in the preset optical path is output through the optical signal output port, thereby realizing the transmission of the optical signal in different optical paths; in actual use, that is, by setting the closed state of each optical switch to achieve the effect of changing the optical path, the process of repeatedly plugging and unplugging a large number of optical fiber lines of the test module and the matching module during the inspection process and the situation of plugging and unplugging replacement interfaces during the test process are avoided, and the basic problems of complex and difficult optical path switching of different types of basic modules of the safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved, and the problem of spending a lot of time on complex optical path switching when inspecting each basic module is avoided.

[0047] Optionally, the above device is also provided with a communication serial port for realizing communication with multiple optical switches; the communication serial port is used to transmit the logic instructions in the preset driver table to each optical switch through a preset protocol. Among them, the external communication serial port 1 can be an RS485 serial port and adopts the MODBUS industrial protocol to send the command line in the driver table to the editable micro cascade optical path switching device for execution.

[0048] Among them, a high-speed, low-power, high-reliability, and low-cost switching optical path method is adopted to achieve the application requirements of low power consumption and high speed, low cost and intensive space; the external structure adopts a 1U shell to meet the application of miniaturized space; the optical path switching is realized by different cascade modes of 18 micro-mechanical dual 1×2 non-self-locking optical switches inside the switching device. The optical switch can achieve 1-to-2, and through the combination of different optical switches, it can provide the optical fiber path required by all the basic modules of the tested safety-level DCS system; the 28 external optical path interfaces on the device can be directly plugged into optical fibers for use with test cards, tested cards, switches and other equipment; the external 1-way RS485 serial port uses the MODBUS industrial protocol to send the command lines in the driver table to the editable micro-cascade optical path switching device for execution; the module test end is equipped with 4 optical signal input ports, and the user can set the signal path in advance according to the direction of the signal, and then control the state of the switching switch by setting the "1" and "0" commands in the driver table to achieve the editability of the optical path switching.

[0049] Optionally, each of the above optical switches is located in a square housing, such as Figure 3 As shown, each optical path interface extends out of the square shell; wherein the square shell is detachably connected to a mounting bracket, and the extension length of the mounting bracket is adjusted through the mounting hole; specifically, the thickness of the square shell is 1U.

[0050] The main body is designed as a 1U high rectangular shell structure with a detachable mounting bracket. The extension length of the bracket can be adjusted through the mounting hole and can be used in dense spaces.

[0051] Optionally, the above preset driver table is edited via Excel.

[0052] The beneficial effect of adopting the above further solution is that the driver table can be directly edited by the user through Excel, and after editing, the driver software can package the commands and directly send them for execution.

[0053] Embodiment 2:

[0054] In order to solve the basic problems of complex and difficult optical path switching of different types of basic modules in the current safety-level DCS system, long switching time, and difficulty in optical path verification after switching, and at the same time to avoid the problem of spending a lot of time on complex optical path switching when inspecting each basic module, this embodiment provides an editable micro cascade optical path switching device based on a nuclear safety-level DCS system, including 18 optical switches in a cascade relationship, and the above optical switches are micro mechanical dual 1×2 non-self-locking optical switches; wherein:

[0055] Part of the pins of the 18 optical switches form 16 optical path interfaces, 8 direct optical path interfaces and 4 reserved optical path interfaces. The switched optical paths are all bidirectional conductive links. The 18 optical switches are used to form optical paths with multiple different paths through the closed state of each optical switch and the cascade relationship between each optical switch. The optical path interface is used to access the optical signal transmitted in the preset optical path, and is also used to output the optical signal in the preset optical path. Specifically, the 28 external optical path interfaces on the device can be directly plugged into optical fibers for use with test cards, tested cards, switches and other equipment.

[0056] Optionally, the above device is also provided with a communication serial port for realizing communication with multiple optical switches; the communication serial port is used to transmit the logic instructions in the preset driver table to each optical switch through a preset protocol. Among them, the external communication serial port 1 can be an RS485 serial port and adopts the MODBUS industrial protocol to send the command line in the driver table to the editable micro cascade optical path switching device for execution.

[0057] Optionally, each of the above optical switches is located in a square housing, such as Figure 3 As shown, each optical path interface extends out of the square shell; wherein the square shell is detachably connected to a mounting bracket, and the extension length of the mounting bracket is adjusted through the mounting hole; specifically, the thickness of the square shell is 1U.

[0058] The main body is designed as a 1U high rectangular shell structure with a detachable mounting bracket. The extension length of the bracket can be adjusted through the mounting hole and can be used in dense spaces.

[0059] Optionally, the above preset driver table is edited via Excel.

[0060] The beneficial effect of adopting the above further solution is that the driver table can be directly edited by the user through Excel, and after editing, the driver software can package the commands and directly send them for execution.

[0061] Among them, a high-speed, low-power, high-reliability, and low-cost switching optical path method is adopted to achieve the application requirements of low power consumption and high speed, low cost and intensive space; the external structure adopts a 1U shell to meet the application of miniaturized space; the optical path switching is realized by different cascade modes of 18 micro-mechanical dual 1×2 non-self-locking optical switches inside the switching device. The optical switch can achieve 1-to-2, and through the combination of different optical switches, it can provide the optical fiber path required by all the basic modules of the tested safety-level DCS system; the 28 external optical path interfaces on the device can be directly plugged into optical fibers for use with test cards, tested cards, switches and other equipment; the external 1-way RS485 serial port uses the MODBUS industrial protocol to send the command lines in the driver table to the editable micro-cascade optical path switching device for execution; the module test end is equipped with 4 optical signal input ports, and the user can set the signal path in advance according to the direction of the signal, and then control the state of the switching switch by setting the "1" and "0" commands in the driver table to achieve the editability of the optical path switching.

[0062] The logic diagram of each optical switch is as follows: Figure 2 As shown, it can be seen that Figure 2 The left contact of the optical switch shown in the figure can be closed with either of the two sets of contacts on the right. Figure 2 The contact connection relationship shown in , that is, the P1 end is connected to the P1' end, that is, the P2 end is connected to the P2' end, and the P1 end can be connected to the P1' end or the P3' end, and the P2 end can be connected to the P2' end or the P4' end, that is, when connected, its state is represented as 1, and when not connected, it is represented as 0, as shown in Figure 2 As shown in the table below, Figure 2 The logical relationship between the middle and upper parts.

[0063] Optionally, in each of the above optical switches, Figure 1 As shown:

[0064] The P1 end of the optical switch S1, the P1 end of the optical switch S2, the P1' end and the P3' end of the optical switch S3 respectively form optical signal input ends; the P1' end of the optical switch S1 is connected to the P1 end of the optical switch S4, and the P3' end of the optical switch S1 is connected to the P3' end of the optical switch S5; the P3' end of the optical switch S2 is connected to the P3' end of the optical switch S6, and the P1' end of the optical switch S2 is connected to the P1' end of the optical switch S5; the P1 end of the optical switch S3 is connected to the P3' end of the optical switch S8; the P1' end of the optical switch S4 is connected to the P1' end of the optical switch S6, and the P3' end of the optical switch S4 is connected to the P3' end of the optical switch S7; the P1 end of the optical switch S5 is connected to the P1' end of the optical switch S8, and the P1 end of the optical switch S8 is connected to the P1 end of the optical switch S10; the P1' end of the optical switch S7 is connected to the P1' end of the optical switch The optical switch S12 is connected to the P1 end of the optical switch S12, the P1 end of the optical switch S7 is connected to the P1 end of the optical switch S9; the P1' end of the optical switch S10 is connected to the P1 end of the optical switch S13, and the P3' end of the optical switch S10 is connected to the P1 end of the optical switch S14; the P1' end of the optical switch S18 is connected to the P3' end of the optical switch S17, the P1' end of the optical switch S17 is connected to the P3' end of the optical switch S18, and the P1 end of the optical switch S18 is connected to the P3' end of the optical switch S9; the P1' end of the optical switch S16 is connected to the P1' end of the optical switch S9; the P1' end of the optical switch S12 is connected to the P1' end of the optical switch S11; the P3' end of the optical switch S13 is connected to the P3' end of the optical switch S11; wherein, the preset optical path is formed by a plurality of optical switches in a cascade relationship and the closed state of each optical switch.

[0065] Specifically, the editable micro-cascade optical path switching device provided in this embodiment can be used for optical path switching inspection during the inspection process of the basic module of the nuclear safety-level DCS system. By cooperating with the safety-level DCS basic module detection device, the optical signal link of the module can be correctly switched to the required interface; the following is further explained through specific use cases; Figure 4 As shown, Figure 4 What is implemented is that the optical signals of the four ports LC-A13, LC-B13, LC-A14, and LC-B14 are sent to the LC-B11 port in sequence. In the figure, S1-S18 represent various optical switches, among which the filled ones represent the controlled optical switches, and the transmission path of the optical signals can be seen.

[0066] After the path is planned, it is realized by controlling the state of each optical switch in the editable micro cascade optical path switching device; Figure 4 In order to send the optical signals of the four ports LC-A13, LC-B13, LC-A14, and LC-B14 to the LC-B11 port in sequence, the driver table formed is as shown in Table 1. The user only needs to edit and import the driver in the driver table according to the following format to execute the above optical signal transmission path.

[0067] Table 1

[0068]

[0069] Among them, Byte1-Byte7 in Table 1 is the data format of the MODBUS protocol; when using, you only need to insert the four optical fiber interfaces LC-A13, LC-B13, LC-A14, and LC-B14 into the corresponding ports of the module under test, and then run this driver table to complete the switching of all optical paths. The driver table only needs to be imported once. Users can also implement optical path switching tests for all modules in all nuclear safety-level DCS systems by simply modifying the optical switch state.

[0070] Specifically, another use case is used to further illustrate this; see Figure 1 , if you need to send the optical signals of the LC-A13 and LC-B13 ports to the LC-A5 port, and at the same time ensure that the data of the LC-A13 and LC-B13 ports meet the expected requirements and maintain the communication connection status when the LC-A4 port communicates with the LC-A5 port; first determine the order of the signals according to the actual needs, sort out the switching logic, and then drive and edit the optical switch; first determine the switch to be switched according to the signal flow direction, such as Figure 5 As shown, Figure 5 The filled ones are the optical switches that need to be controlled; edit the drive table according to the signal flow, see Table 2.

[0071] Table 2

[0072]

[0073] Among them, by editing and importing the driver table shown in Table 2 above, the optical path switching function test can be completed, that is, the optical signals of the two ports LC-A13 and LC-B13 are sent to the LC-A5 port. At the same time, it is necessary to ensure that when the LC-A4 port communicates with the LC-A5 port, the data of the LC-A13 and LC-B13 ports meet the expected requirements and maintain the communication connection state.

[0074] In this embodiment, by cascading multiple micro-mechanical dual 1×2 non-self-locking optical switches, the driver table edited by the user is sent to the device for execution through the MODBUS industrial protocol. In this way, the user has more operability and the device scalability is also higher; the driver table is edited in the form of an EXCEL table, and only simple learning is required to write the drive instruction. The user can set the waiting time for switching according to the needs to ensure the integrity of different signals; when switching the optical path at high speed, the optical signal has almost no loss, and the entire device uses low-power devices, and the device is small in size and can be used in a narrow space; the basic problems of complex and difficult optical path switching of different types of basic modules in the nuclear safety-level DCS system, long switching time, and difficulty in optical path verification after switching are solved, and the device has the characteristics of automatic high-speed switching of optical signals, low loss, portability, long service life, small size, low power consumption, strong expansion capability, simple control method, and strong versatility, meeting the needs of optical path switching and automatic testing of different optical communication modules; and the device has been successfully applied to the automatic test system of the basic module of the nuclear safety-level DCS system, and the optical port switching efficiency is improved by 100%.

[0075] Embodiment 3:

[0076] An embodiment of the present application provides an application of an editable micro-cascade optical path switching device based on a nuclear safety-level DCS system in optical path switching, such as any one of Embodiment 1 or Embodiment 2.

[0077] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An editable micro cascade optical path switching device based on a nuclear safety-level DCS system, characterized in that: The invention comprises a plurality of optical switches in a cascade relationship, wherein: Part of the pins of the plurality of optical switches respectively form an optical path interface, wherein the optical path interface includes an optical signal input port and an optical signal output port; The plurality of optical switches are used to form optical paths with a plurality of different paths through the closed state of each optical switch and the cascade relationship between each optical switch; the optical path interface is used to access the optical signal transmitted in the preset optical path and also to output the optical signal in the preset optical path.

2. According to claim 1, an editable micro cascade optical path switching device based on a nuclear safety-level DCS system is characterized in that: The optical switch is a micro-mechanical dual 1×2 non-self-locking optical switch.

3. According to claim 2, an editable micro cascade optical path switching device based on a nuclear safety-level DCS system is characterized in that: The number of the optical switches is 18; the number of the optical path interfaces is 28, wherein the number of the optical signal input ports is 4.

4. According to claim 1, an editable micro cascade optical path switching device based on a nuclear safety-level DCS system is characterized in that: The device is also provided with a communication serial port for realizing communication with a plurality of optical switches, and the communication serial port is used to transmit the logic instructions in the preset driving table to each of the optical switches through a preset protocol.

5. The editable micro cascade optical path switching device based on a nuclear safety-level DCS system according to claim 1 is characterized in that: Each of the optical switches is located in a square housing, and each of the optical path interfaces extends out of the square housing.

6. The editable micro cascade optical path switching device based on a nuclear safety-level DCS system according to claim 5 is characterized in that: The square shell is detachably connected to a mounting bracket, and the extension length of the mounting bracket is adjusted through a mounting hole.

7. The editable micro cascade optical path switching device based on a nuclear safety-level DCS system according to claim 5 is characterized in that: The thickness of the square shell is 1U.

8. The editable micro cascade optical path switching device based on a nuclear safety-level DCS system according to claim 4 is characterized in that: The preset driver table is edited via Excel.

9. An editable micro cascade optical path switching device based on a nuclear safety-level DCS system according to any one of claims 3 to 8, characterized in that: In each of the optical switches: The P1 end of the optical switch S1, the P1 end of the optical switch S2, the P1' end and the P3' end of the optical switch S3 respectively form optical signal input ends; the P1' end of the optical switch S1 is connected to the P1 end of the optical switch S4, and the P3' end of the optical switch S1 is connected to the P3' end of the optical switch S5; the P3' end of the optical switch S2 is connected to the P3' end of the optical switch S6, and the P1' end of the optical switch S2 is connected to the P1' end of the optical switch S5; the P1 end of the optical switch S3 is connected to the P3' end of the optical switch S8; the P1' end of the optical switch S4 is connected to the P1' end of the optical switch S6, and the P3' end of the optical switch S4 is connected to the P3' end of the optical switch S7; the P1 end of the optical switch S5 is connected to the P1' end of the optical switch S8, and the P1 end of the optical switch S8 is connected to the optical switch S10 The P1 end of the optical switch S7 is connected to the P1 end of the optical switch S12, and the P1 end of the optical switch S7 is connected to the P1 end of the optical switch S9; the P1' end of the optical switch S10 is connected to the P1 end of the optical switch S13, and the P3' end of the optical switch S10 is connected to the P1 end of the optical switch S14; the P1' end of the optical switch S18 is connected to the P3' end of the optical switch S17, and the P1' end of the optical switch S17 is connected to the P3' end of the optical switch S18, and the P1 end of the optical switch S18 is connected to the P3' end of the optical switch S9; the P1' end of the optical switch S16 is connected to the P1' end of the optical switch S9; the P1' end of the optical switch S12 is connected to the P1' end of the optical switch S11; the P3' end of the optical switch S13 is connected to the P3' end of the optical switch S11.

10. Application of an editable micro cascade optical path switching device based on a nuclear safety-level DCS system as claimed in any one of claims 1 to 9 in optical path switching.

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