Method and device for detecting fault of signal processing equipment and optical interface board online

摘要

The disclosure relates to a method and device for detecting a fault of signal processing equipment and an optical interface board on line. The signal processing equipment includes n function modules F1, F2, . . . Fn, and n fault detecting points T1, T2, . . . Tn for determining whether there is a fault in said n function modules, wherein n is a natural number. When the detecting result of said detecting point Ti indicates there is a fault in the function module Fi, the corresponding detecting points of other function modules directly associated with the function module Fi are detected continuously, and the reason of the fault is determined according to all the fault function modules. The present disclosure divides the equipment or the board into different modules in accordance with functions, a fault detecting point being set in each module. Therefore, the fault source point of the equipment or the board can be detected and located quickly without artificial participation, and the self-detection can be done automatically when the board is idle to detect problems promptly, so as to improve the testability and the on-site maintainability of products.

主权项

1. A method for on-line detecting a fault of an optical interface board by an on-line fault detection device, the optical interface board comprising an optical module F1 and a fault detection point T1 thereof, a clock module F2 and a fault detection point F2 thereof, a multiplexing and de-multiplexing module F3 and a fault detection point T3 thereof, a service processing module F4 and a fault detection point F4 thereof; and the method comprising:
detecting a voltage of an electrical signal at the fault detection point T4 of the service processing module F4 firstly; if there is no fault, indicating that the optical interface board has no fault and ending the detection; if the detection for the fault detection point T4 indicates the electrical signal is lost, i.e., there is a fault in the service processing module F4, performing the detection on a voltage of a clock signal at the fault detection point T3 of the multiplexing and de-multiplexing module F3; if there is no fault detected at T3, indicating that the fault is only in the service processing module F4 of the optical interface board; and ending the detection; if the detection of the fault detection point T3 indicates the clock signal losses lock, i.e., there is a fault in the multiplexing and de-multiplexing module F3, performing the detection on a voltage of a Phase-Locked Loop (PLL) at the fault detection point T2; if it is detected at T2 that the PLL loses lock, i.e., there is a fault detected at T2, indicating that there is a fault in the clock module F2 of the optical interface board or there is a fault in the clock module F2, the multiplexing and de-multiplexing module F3 and the service processing module F4 of the optical interface board; and ending the detection; if the detection of the fault detection point T2 indicates there is no fault in the clock module F2, performing the detection on an optical power of an optical signal at the fault detection point T1; if there is no fault detected at T1, indicating that there is a fault in the multiplexing and de-multiplexing module F3 of the optical interface board; if it is detected at T1 that the optical power exceeds a maximum threshold, i.e., there is a fault detected at T1, indicating that the fault of the optical interface board comes from the optical module F1 or an upper stream; and ending the detection; if the detection of the fault detection points T2 and T3 indicates there is a fault in the clock module F2 and there is no fault in the multiplexing and de-multiplexing module F3, performing the detection on the fault detection point T1; if there is no fault detected at T1, indicating that there is a fault in the service processing module F4 and the multiplexing and de-multiplexing module F2 of the optical interface board; if there is a fault detected at T1, indicating that the fault of the optical interface board comes from the upper stream; and ending the detection.