Signal switching wiring channel and signal management module

Abstract

The utility model discloses a signal switching wiring channel and a signal management module. Comprising four terminal type high-speed photoelectric couplers (9) and four solid-state relays (10), and one terminal type high-speed photoelectric coupler (9) is correspondingly and electrically connected with one solid-state relay (10) so as to control on / off of each solid-state relay (10); the four solid-state relays (10) are respectively a solid-state relay K1, a solid-state relay K2, a solid-state relay K3 and a solid-state relay K4; wherein the solid-state relays K1 and K2 are connected in series to form a first branch, the solid-state relays K3 and K4 are connected in series to form a second branch, and the common end of the solid-state relays K1 and K2 is electrically connected with the common end of the solid-state relays K3 and K4. According to the utility model, the technical problems that the manual switching is time-consuming and labor-consuming, the efficiency is low, and the test result is deviated due to the misoperation of the manual switching person during signal switching are solved.

Description

Technical Field

[0001] This utility model relates to the field of avionics test equipment technology, and in particular to a signal switching wiring channel and signal management module. Background Technology

[0002] Currently, most avionics laboratory tests involve switching test signal wiring. The test equipment may receive signals from real equipment or simulated equipment, necessitating switching of a specific signal source during testing. After receiving a test signal, the test equipment then sends it to test resources to verify its accuracy, again requiring signal channel wiring switching. Therefore, throughout the testing process, the test signal wiring channels need to be switched repeatedly to ensure the test equipment receives the required signals and monitors specific signals. Existing laboratories often use traditional manual wiring switching methods to control the signal source entering the test equipment. Due to the complexity and redundancy of cables during testing, manual wiring switching is time-consuming and labor-intensive. Furthermore, manual switching during testing is prone to errors, leading to deviations in test results and hindering high-quality, efficient, and rapid testing. Utility Model Content

[0003] The purpose of this invention is to provide a signal switching wiring channel and a signal management module. This invention solves the technical problems of time-consuming and labor-intensive manual signal switching, low efficiency, and the possibility of human error leading to deviations in test results.

[0004] Technical Solution. A signal switching wiring channel includes four terminal-type high-speed optocouplers and four solid-state relays. Each terminal-type high-speed optocoupler is electrically connected to one solid-state relay to control the on / off state of each solid-state relay. The four solid-state relays are K1, K2, K3, and K4. Solid-state relays K1 and K2 are connected in series to form a first branch, and solid-state relays K3 and K4 are connected in series to form a second branch. The common terminal of solid-state relays K1 and K2 is electrically connected to the common terminal of solid-state relays K3 and K4.

[0005] A signal management module equipped with the aforementioned signal switching wiring channel, wherein solid-state relay K1 of the first branch is electrically connected to the real device signal input interface via a signal isolator, and solid-state relay K2 is electrically connected to the simulated signal input interface via a signal isolator; solid-state relay K3 of the second branch is electrically connected to the real device signal output interface via a signal isolator, and solid-state relay K4 is electrically connected to the simulated signal output interface via a signal isolator; and each terminal-type high-speed optocoupler is electrically connected to the MCU processor.

[0006] In the aforementioned signal management module, the MCU processor is connected to the Ethernet port via an Ethernet communication module.

[0007] In the aforementioned signal management module, each signal switching wiring channel is equipped with a set of channel status indicator lights. Each set of channel status indicator lights has two red and green LEDs, which correspond to the working status of the wiring channel: when the channel is working normally, the indicator light is green, otherwise it is red.

[0008] The aforementioned signal management module has an overall rack-mount chassis structure. Terminal high-speed optocouplers, solid-state relays, signal isolators, MCU processors, Ethernet communication modules, and channel status indicator lights are all located inside the chassis. Real component signal input interfaces, real component signal output interfaces, simulation signal input interfaces, and simulation signal output interfaces are all located on the front panel of the chassis, while the Ethernet port is located on the rear panel of the chassis.

[0009] The aforementioned signal management module also includes an LCD screen on the front panel of the enclosure.

[0010] Beneficial effects: In the process of avionics testing, this utility model can quickly switch the signal of the wiring channel, realize the rapid switching of input and output of real signal and simulation signal, provide stable and reliable signal interaction control for the test, and is simple to operate. It replaces the manual wiring switching method with automatic control, saves test time and improves test efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall signal management module of this utility model;

[0012] Figure 2 This is a front view of the signal management module of this utility model;

[0013] Figure 3 This is a schematic diagram of the back of the signal management module of this utility model;

[0014] Figure 4 This is a schematic diagram of the input / output interface switching principle of this utility model. Detailed Implementation

[0015] Example 1. A signal switching wiring channel, configuration as shown in the example. Figures 1-4It includes four terminal high-speed optocouplers 9 and four solid-state relays 10. Each terminal high-speed optocoupler 9 is electrically connected to one solid-state relay 10 to control the on / off state of each solid-state relay 10. The four solid-state relays 10 are solid-state relay K1, solid-state relay K2, solid-state relay K3, and solid-state relay K4. Among them, solid-state relays K1 and K2 are connected in series to form the first branch, solid-state relays K3 and K4 are connected in series to form the second branch, and the common terminal of solid-state relays K1 and K2 is electrically connected to the common terminal of solid-state relays K3 and K4.

[0016] The signal management module equipped with the aforementioned signal switching wiring channel has the following connections: the solid-state relay K1 of the first branch is electrically connected to the real device signal input interface 11 via signal isolator 5, and the solid-state relay K2 is electrically connected to the simulation signal input interface 13 via signal isolator 5; the solid-state relay K3 of the second branch is electrically connected to the real device signal output interface 12 via signal isolator 5, and the solid-state relay K4 is electrically connected to the simulation signal output interface 14 via signal isolator 5; and each terminal-type high-speed optocoupler 9 is electrically connected to the MCU processor 4.

[0017] The aforementioned MCU processor 4 is connected to Ethernet port 15 via Ethernet communication module 2.

[0018] Each of the aforementioned signal switching wiring channels is equipped with a set of channel status indicator lights 8. Each set of channel status indicator lights 8 has two red and green LEDs, which correspond to the working status of the wiring channel: when the channel is working normally, the indicator light is green, otherwise it is red.

[0019] The aforementioned signal management module features a rack-mount chassis structure. The terminal-type high-speed optocoupler 9, solid-state relay 10, signal isolator 5, MCU processor 4, Ethernet communication module 2, and channel status indicator lights 8 are all located within the chassis 1. The real-device signal input interface 11, real-device signal output interface 12, simulation signal input interface 13, and simulation signal output interface 14 are all located on the front panel of chassis 1, while the Ethernet port 15 is located on the rear panel. This rack-mount chassis structure facilitates installation within a test cabinet and also allows for real-time monitoring of the control status. The front panel of the chassis has four input / output interfaces for connecting real-device signals and simulation signals. The signal management module uses an MCU processor to communicate with the host computer via Ethernet, controlling the signal isolator to drive the terminal-type high-speed optocoupler and solid-state relay to switch signal channels.

[0020] The aforementioned enclosure 1 also features an LCD screen 6 on its front panel. This screen can display the real-time status of the signal input and output of each channel. Inside the enclosure, indicator lights are designed to indicate the status of each channel, facilitating maintenance and debugging by testing personnel.

[0021] like Figure 1 As shown, the module adopts a rack-mount chassis structure. The chassis uses a standard 2U chassis with main dimensions of 482*87.5*387.5mm (length*width*depth). The chassis has mounting holes and a standard chassis handle 7 for easy installation in a test cabinet. The internal power module 3 converts the 220V AC power input from the power input interface 16 into the DC power required for the equipment's operation, providing voltage regulation and protection to ensure the normal operation of the wiring equipment. The Ethernet communication module 2 connects to the Ethernet port 15 and the MCU processor 4. Its main function is to enable Ethernet communication with the host computer, receiving control commands from the host computer and sending the operating status of the wiring equipment to the host computer for testing personnel. The signal isolator 5 primarily isolates the signals from the four input / output interfaces on the front of the chassis: real signal input interface 11, real signal output interface 12, simulation signal input interface 13, and simulation signal output interface 14. These signals are then connected to the terminal-type high-speed optocoupler 9 and solid-state relay 10 according to the designed circuit channels for channel wiring. The signal isolator 5 effectively isolates various signal channels, suppresses electromagnetic interference, and ensures the stability of the signal channels. The channel status indicator lights 8 consist of 16 groups, each with two red and green LEDs corresponding to the working status of the 16 wiring channels. A green light indicates normal channel operation, while a red light indicates other statuses.

[0022] The terminal-type high-speed optocoupler 9 and the solid-state relay 10 are combined to achieve rapid switching between the input and output of various signal channels. The terminal-type high-speed optocoupler 9 can achieve a switching frequency of up to 100Hz, and the solid-state relay 10 can isolate each signal channel in the loop, effectively preventing mutual interference between channels. Each signal switching wiring channel consists of a control circuit composed of four high-speed optocouplers and four solid-state relays. The high-speed optocoupler 9 receives control commands from the MCU processor 4 to control the solid-state relay 10, realizing... Figure 4 The solid-state relay switches of wiring channels K1, K2, K3, and K4 are switched on and off to achieve high-speed switching of wiring channels and ensure the stability of signals on the wiring channels during switching.

[0023] like Figure 2As shown, the front panel of the enclosure sequentially houses an LCD screen 6, a real-device signal input interface 11, a real-device signal output interface 12, a simulation signal input interface 13, and a simulation signal output interface 14. The LCD screen 6 receives information from the MCU processor 4, displaying the current input / output signal types and operating status of each channel, allowing test personnel to quickly and intuitively understand the current operating status of each channel of the wiring equipment. The real-device signal input interface 11 receives signals from the onboard real-device equipment; its signal on / off state is controlled by... Figure 4 The K1 solid-state relay switch is controlled; the simulation signal input interface 13 receives simulation signals from finished simulation boards such as 422 / 429 boards, and the on / off state of the signal is controlled by... Figure 4 The K2 solid-state relay switch control; the real component signal output interface 12 sends signals from the wiring equipment to the onboard real component equipment. The source of the sent signals is either signals emitted by the onboard real component equipment or simulation signals from finished product simulation boards such as 422 / 429 board resources. The simulation signal output interface 14 sends signals from the wiring equipment to the finished product 422 / 429 signal monitoring board resources for parsing. The source of the sent signals is either signals emitted by the onboard real component equipment or simulation signals from finished product simulation boards such as 422 / 429 board resources.

[0024] like Figure 3 As shown, the rear panel of the enclosure contains, in sequence: an Ethernet port 15, a power input interface 16, and a power switch 17. The device communicates with the host computer via the Ethernet port 15. The power input interface 16 supplies power to the wiring equipment, and the power switch 17 controls the power supply of the entire wiring equipment, serving as the working interface for external communication of the entire device.

[0025] like Figure 4 The diagram shown is the control principle diagram of the wiring switching equipment. Each signal switching wiring channel consists of four high-speed optocouplers and four solid-state relays, forming control circuits K1, K2, K3, and K4. These circuits are controlled by the MCU processor 4 to switch the on / off states of each channel. A single set of fast-switching wiring channel signal modules can support up to 16 input / output signals from actual equipment or 16 signal simulations and monitoring from finished circuit boards.

[0026] When a signal module that rapidly switches wiring channels is operating, there are generally four scenarios for switching wiring channels:

[0027] The airborne equipment receives signals from the actual components and monitors these signals.

[0028] We control the K1, K2, K3, and K4 control circuits, which consist of four high-speed optocouplers and four solid-state relays, by sending control commands through the MCU processor 4. The K1, K3, and K4 circuits are closed, and the K2 circuit is open. The onboard equipment signal can flow from the onboard equipment signal input interface 11 to the onboard equipment signal output interface 12 and the simulation signal output interface 14. At this time, the onboard equipment signal is in a direct connection state. At the same time, the onboard equipment signal can be output to the finished product 422 / 429 signal monitoring board resources for analysis through the simulation signal output interface 14.

[0029] The airborne equipment receives signals from the actual components but does not monitor these signals.

[0030] The MCU processor 4 sends control commands to control the K1, K2, K3, and K4 control circuits, which consist of four high-speed optocouplers and four solid-state relays. When K1 and K3 are closed and K2 and K4 are open, the onboard equipment signal can flow from the signal input interface 11 to the signal output interface 12. At this time, the signal is in a direct connection state.

[0031] The airborne equipment receives and monitors the simulated signals.

[0032] We control the K1, K2, K3, and K4 control circuits, composed of four high-speed optocouplers and four solid-state relays, by sending control commands through the MCU processor 4. The K2, K3, and K4 circuits are closed, and the K1 circuit is open. The simulation signal from the finished 422 / 429 signal simulation board is connected to the wiring equipment through the simulation signal output interface 14, and then enters the airborne equipment through the actual component signal output interface 12. At this point, the airborne actual component equipment receives the simulation signal from the finished 422 / 429 signal simulation board and simultaneously outputs the simulation signal to the finished 422 / 429 signal monitoring board resource for analysis through the simulation signal output interface 14.

[0033] The airborne equipment receives simulated signals but does not monitor them.

[0034] We control the K1, K2, K3, and K4 control circuits, composed of four high-speed optocouplers and four solid-state relays, by sending control commands through the MCU processor 4. The K2 and K3 circuits are closed, while the K1 and K4 circuits are open. The simulation signal from the finished 422 / 429 signal simulation board is connected to the wiring equipment through the simulation signal output interface 14, and then enters the airborne equipment through the actual component signal output interface 12. At this point, the airborne actual component equipment receives the simulation signal from the finished 422 / 429 signal simulation board.

[0035] In summary, during avionics testing, this signal management module can support rapid switching and wiring management of up to 16 signal channels. It enables rapid switching of input / output channels between airborne prototype equipment and finished 422 / 429 circuit board resources. Test personnel can control the switching of each wiring channel according to test requirements, and the status of each wiring channel can be displayed in real time on an LCD screen. It provides stable and reliable signal interaction control for avionics testing, and its simple operation, replacing manual wiring switching with automatic control, significantly saves test time, improves test efficiency, and enhances the accuracy and reliability of the tests.

Claims

1. A signal switching wiring channel, characterized in that, It includes four terminal high-speed optocouplers (9) and four solid-state relays (10). Each terminal high-speed optocoupler (9) is electrically connected to one solid-state relay (10) to control the on / off state of each solid-state relay (10). The four solid-state relays (10) are solid-state relay K1, solid-state relay K2, solid-state relay K3, and solid-state relay K4. Among them, solid-state relays K1 and K2 are connected in series to form the first branch, solid-state relays K3 and K4 are connected in series to form the second branch, and the common terminal of solid-state relays K1 and K2 is electrically connected to the common terminal of solid-state relays K3 and K4.

2. A signal management module equipped with the signal switching wiring channel of claim 1, characterized in that, The solid-state relay K1 in the first branch is electrically connected to the real device signal input interface (11) via a signal isolator (5), and the solid-state relay K2 is electrically connected to the simulation signal input interface (13) via a signal isolator (5); the solid-state relay K3 in the second branch is electrically connected to the real device signal output interface (12) via a signal isolator (5), and the solid-state relay K4 is electrically connected to the simulation signal output interface (14) via a signal isolator (5); each terminal high-speed optocoupler (9) is electrically connected to the MCU processor (4).

3. The signal management module according to claim 2, characterized in that, The MCU processor (4) is connected to the Ethernet port (15) via the Ethernet communication module (2).

4. The signal management module according to claim 2, characterized in that, Each of the aforementioned signal switching wiring channels is equipped with a set of channel status indicator lights (8). Each set of channel status indicator lights (8) has two red and green LEDs, which correspond to the working status of the wiring channel: when the channel is working normally, the indicator light is green, otherwise it is red.

5. The signal management module according to any one of claims 2-4, characterized in that, The overall structure is a rack-mounted chassis. Terminal high-speed optocoupler (9), solid-state relay (10), signal isolator (5), MCU processor (4), Ethernet communication module (2), and channel status indicator (8) are all located inside the chassis (1). The real component signal input interface (11), real component signal output interface (12), simulation signal input interface (13), and simulation signal output interface (14) are all located on the front panel of the chassis (1), and the Ethernet port (15) is located on the rear panel of the chassis (1).

6. The signal management module according to claim 5, characterized in that, The front panel of the enclosure (1) is also equipped with an LCD screen (6).

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