SDH equipment teaching and training system
Patent Information
- Application Number
- CN202520975156.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-05-16
Smart Images
Figure CN224861956U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of equipment fault simulation teaching technology, and in particular to an SDH equipment teaching and training system. Background technology:
[0002] Synchronous Digital Hierarchy (SDH) equipment, as the core equipment of transmission networks, is widely used in industries such as power, finance, and telecommunications, and its technology is developing rapidly. At the same time, timely troubleshooting and maintenance of SDH equipment has become particularly important. To improve skills in troubleshooting and maintaining SDH equipment, relevant training programs are usually organized for trainees.
[0003] Traditional SDH equipment training systems consist of a computer running a virtual interface, a mouse, and a keyboard. Users select faults from menus using the mouse, trigger faults by clicking, and view optical power values on the display screen. They also simulate plugging and unplugging interfaces by dragging virtual device icons. However, traditional SDH equipment training systems cannot simulate the feel of real equipment, lack signal status feedback, and cannot monitor signal status in real time, thus limiting the effectiveness of teaching. Furthermore, traditional SDH equipment training systems only support preset standard faults and lack fault injection functionality. Utility model content:
[0004] The purpose of this invention is to provide an SDH equipment teaching and training system that enables students to experience the real feel of operating the equipment, receive feedback on signal status, and monitor the optical power and bit error rate of the tactile resistance sensor in real time, thereby improving the teaching effect.
[0005] This utility model is implemented by the following technical solution: An SDH equipment teaching and training system includes: a signal input device, a signal monitoring device, and a fault injection device;
[0006] The signal input device includes a detachable interface, a tactile resistance feedback module, a controller, and an LED status indicator; the tactile resistance feedback module is located inside the detachable interface, and both the tactile resistance feedback module and the LED status indicator are electrically connected to the controller; the tactile resistance feedback module is electrically connected to the signal monitoring device.
[0007] The tactile resistance feedback module is used to detect the resistance of loosening the detachable interface during plugging and unplugging; the signal monitoring device is used to detect the optical power and bit error rate transmitted by the tactile resistance feedback module; and the fault injection device is used to set the fault type.
[0008] Furthermore, the signal monitoring device includes radio frequency circuitry, an optical power meter, and a bit error rate measurement circuit.
[0009] The radio frequency (RF) circuit is electrically connected to the optical power meter and the bit error rate (BER) measurement circuit, respectively. The RF circuit is used to convert and filter digital signals. The optical power meter is used to measure optical power, and the BER measurement circuit is used to measure the BER.
[0010] Furthermore, the radio frequency circuitry includes a digital-to-analog converter and a digital filter;
[0011] The digital-to-analog converter is electrically connected to the digital filter; the digital-to-analog converter is electrically connected to the tactile resistance feedback module, and the digital filter is electrically connected to the bit error rate measurement circuit and the optical power meter, respectively.
[0012] Furthermore, the fault injection device includes a fault injector, a status display, and a second controller;
[0013] The fault injector is electrically connected to the controller; the second controller is electrically connected to the status display, the optical power meter, and the bit error rate test circuit respectively; the fault injector is used to set the fault type; the status display is used to display the bit error rate and optical power.
[0014] Furthermore, the SDH equipment teaching and training system also includes: a position sensor located in a detachable interface, the position sensor being electrically connected to a second controller, and a status display used to display the fault type.
[0015] The advantages of this invention are as follows: By providing a detachable interface, trainees can realistically manipulate the interface through plugging and unplugging, achieving a genuine tactile experience when operating the equipment. Furthermore, the fault injection device injects faults, and the controller controls the LED status indicator to display red based on the optical power signal transmitted by the fault injection device. The tactile resistance feedback module transmits an optical power signal to the controller, which controls the LED status indicator to display green when the optical power transmitted by the fault injection device and the optical power transmitted by the tactile resistance feedback module are equal. In this embodiment, signal status feedback is achieved through the controller and LED status indicator, and real-time monitoring of the optical power and bit error rate transmitted by the tactile resistance sensor is achieved through the signal monitoring device. The fault injection device also injects faults, improving the teaching effectiveness. Attached image description:
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of an SDH equipment teaching and training system provided by this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of another SDH equipment teaching and training system provided by this utility model;
[0019] Signal input device 1, signal monitoring device 3, fault injection device 2, LED status indicator 10, control module 11, detachable interface 12, fault injector 22, status display 20, second control module 21, radio frequency circuit 30, optical power meter 31, bit error rate measurement circuit 32, tactile resistance feedback module 120, position sensor 121, digital-to-analog converter 301, digital filter 302. Detailed implementation method:
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Figure 1 This is a structural schematic diagram of an SDH equipment teaching and training system provided by this utility model. See [link / reference]. Figure 1 The SDH equipment teaching and training system includes: signal input device 1, signal monitoring device 3, and fault injection device 2;
[0022] The signal input device 1 includes a detachable interface 12, a tactile resistance feedback module 120, a control module 11, and an LED status indicator 10; the tactile resistance feedback module 120 is located inside the detachable interface 12, and both the tactile resistance feedback module 120 and the LED status indicator 10 are electrically connected to the control module 11; the tactile resistance feedback module 120 is also electrically connected to the signal monitoring device 3.
[0023] The tactile resistance feedback module 120 is used to detect the resistance of the detachable interface 12 when it is plugged in or unplugged; the signal monitoring device 3 is used to detect the optical power and bit error rate transmitted by the tactile resistance feedback module 120; and the fault injection device 2 is used to set the fault type.
[0024] The LED status indicator 10 turns red to indicate a fault, and turns green to indicate that the fault has been cleared. Fault types include loosening of the detachable interface plug and open circuit faults. The signal monitoring device 3 is also used to convert and filter the optical power signal transmitted from the tactile resistance feedback module 120.
[0025] Initially, the teacher sets the fault type using the fault injection device 2. The fault injection device 2 transmits a light power signal to the control module 11. The control module 11 controls the LED status indicator 10 to display red based on the light power signal. The student plugs and unplugs the detachable interface 12 to loosen it. The tactile resistance feedback module 120 detects the resistance of plugging and unplugging the detachable interface 12 and outputs a light power signal (i.e., a digital signal) to the control module 11 and the signal monitoring device 3. The control module 11 controls the LED status indicator 10 to display green based on the light power signal transmitted by the fault injection device 2 and the light signal transmitted by the tactile resistance feedback module 120. When the light power transmitted by the fault injection device 2 and the light power transmitted by the tactile resistance feedback module 120 are equal, the control module 11 controls the LED status indicator 10 to display green, and the student has resolved the fault. When the light power transmitted by the fault injection device 2 and the light power transmitted by the tactile resistance feedback module 120 are not equal, the LED status indicator 10 remains red, and the fault has not been resolved. When the signal monitoring device 3 receives the optical power signal transmitted by the tactile resistance feedback module 120, it monitors the optical power and bit error rate in real time.
[0026] See Figure 1 Furthermore, based on the above embodiments, the signal monitoring device 3 includes a radio frequency circuit 30, an optical power meter 31, and a bit error rate measurement circuit 32; the radio frequency circuit 30 is electrically connected to the optical power meter 31 and the bit error rate measurement circuit 32 respectively; the radio frequency circuit 30 is electrically connected to the tactile resistance feedback module 120; the radio frequency circuit 30 is used to convert digital signals into analog signals and to filter analog signals; the optical power meter 31 is used to measure optical power, and the bit error rate measurement circuit 32 is used to measure bit error rate.
[0027] In this invention, the conversion between digital and analog signals is achieved by setting up an radio frequency circuit 30, and the analog signal is filtered. The optical power meter 31 is set up to achieve real-time monitoring of the optical power of the analog signal, and the bit error rate is measured by setting up a bit error rate measurement circuit 32.
[0028] Figure 2 This is a structural schematic diagram of another SDH equipment teaching and training system provided by this utility model. See [link / reference]. Figure 2 Furthermore, based on the above embodiments, the radio frequency circuit 30 includes a digital-to-analog converter 301 and a digital filter 302; the digital-to-analog converter 301 is electrically connected to the digital filter 302; the digital filter 302 is electrically connected to the tactile resistance feedback module 120 and the bit error rate measurement circuit 32.
[0029] See Figure 1Furthermore, based on the above embodiments, the fault injection device 2 includes a fault injector 22, a status display 20, and a second control module 21; the fault injector 22 is electrically connected to the control module 11; the second control module 21 is electrically connected to the status display 20; the second control module 21 is electrically connected to the tactile resistance feedback module 120; the fault injector 22 is used to set the fault type; the status display 20 is used to display the bit error rate and optical power.
[0030] Among them, such as Figure 1 As shown, "I" in fault injector 22 indicates a loosening fault in detachable interface 12, and "II" in fault injector 22 indicates an open circuit fault.
[0031] When the teacher injects fault signal into position "1" via fault injector 22, the fault setting is a loosening fault in the detachable interface 12. Fault injector 22 transmits an optical power signal to control module 11. At this time, the optical power signal decreases, and control module 11 controls LED status indicator 10 to display red based on the optical power signal. When the student plugs or unplugs the detachable interface 12 to loosen it, tactile resistance feedback module 120 transmits optical power signals to control module 11 and RF circuit 30 respectively. At this time, control module 11 controls LED status indicator 10 to display green based on the optical power input from fault injector 22 and tactile resistance feedback module 120. At this time, the fault is cleared. After conversion and filtering by RF circuit 30, the optical power signal flows to optical power meter 31 and bit error rate test circuit respectively. Optical power meter 31 measures the optical power and transmits it to second control module 21. Bit error rate test circuit tests the bit error rate and transmits it to second control module 21. Second control module 21 controls status display 20 to display optical power and bit error rate.
[0032] When the teacher injects fault into position "1" through fault injector 22, and the student does not insert the detachable interface 12, the light power transmitted from the tactile resistance feedback module 120 to the control module 11 and the radio frequency circuit 30 is zero. At this time, the light power transmitted by the fault injector 22 is different from the light power transmitted by the tactile resistance feedback module 120. The control module 11 controls the LED status indicator 10 to display red, and the fault is not eliminated.
[0033] In this utility model, the fault injection function is realized by setting a fault injector 22, which avoids the fact that the traditional SDH equipment teaching and training system only supports preset standard faults and has no fault injection function. The status display 20 is used to realize the feedback of signal status.
[0034] See Figure 1Furthermore, based on the above embodiments, the SDH equipment teaching and training system also includes: a position sensor 121, which is located inside the detachable interface 12 and is electrically connected to the second control module 21. The status display 20 is also used to display the fault type.
[0035] Specifically, the position sensor 121 includes a Hall sensor. The position sensor 121 detects the depth of insertion into the removable interface 12 and transmits the detected depth of insertion into the removable interface 12 to the second control module 21. The second control module 21 controls the status display 20 to display the fault type based on the depth of insertion into the removable interface 12.
[0036] In this invention, feedback on the fault type is achieved by setting a position sensor 121 and a status display 20.
[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An SDH equipment teaching and training system, characterized in that, include: Signal input device, signal monitoring device, and fault injection device; The signal input device includes a detachable interface, a tactile resistance feedback module, a control module, and an LED status indicator; the tactile resistance feedback module is located inside the detachable interface, and both the tactile resistance feedback module and the LED status indicator are electrically connected to the control module; the tactile resistance feedback module is electrically connected to the signal monitoring device. The tactile resistance feedback module is used to detect the resistance of the detachable interface when plugged in or unplugged, and the signal monitoring device is used to detect the optical power and bit error rate transmitted by the tactile resistance feedback module. The fault injection device is used to set the fault type.
2. The SDH equipment teaching and training system according to claim 1, characterized in that, The signal monitoring device includes a radio frequency circuit, an optical power meter, and a bit error rate measurement circuit. The radio frequency (RF) circuit is electrically connected to the optical power meter and the bit error rate (BER) measurement circuit, respectively; the RF circuit is electrically connected to the tactile resistance feedback module; the RF circuit is used to convert and filter digital signals; the optical power meter is used to measure optical power, and the BER measurement circuit is used to measure the BER.
3. The SDH equipment teaching and training system according to claim 2, characterized in that, The radio frequency circuit includes a digital-to-analog converter and a digital filter; The digital-to-analog converter is electrically connected to the digital filter; the digital-to-analog converter is electrically connected to the tactile resistance feedback module; and the digital filter is electrically connected to the bit error rate measurement circuit and the optical power meter, respectively.
4. The SDH equipment teaching and training system according to claim 1, characterized in that, The fault injection device includes a fault injector, a status display, and a second control module. The fault injector is electrically connected to the control module; the second control module is electrically connected to the status display, the optical power meter, and the bit error rate test circuit, respectively; the fault injector is used to set the fault type; the status display is used to display the bit error rate and optical power.
5. The SDH equipment teaching and training system according to claim 1, characterized in that, Also includes: A position sensor is located within the detachable interface and is electrically connected to the second control module. The status display is also used to display the fault type.