JPS6342239A - Faulty part deciding system - Google Patents

Abstract

PURPOSE:To decide a faulty part by adding a flicker signal as part of an input data, to a digital transmitter provided with its own station loop back function. CONSTITUTION:A flicker signal outputted from a flicker signal generating circuit 6 is transmitted by a multiplexing circuit 2 and a demultiplexing circuit 3, inputted to a flicker state detecting circuit 9, and also, transmitted by a multiplexing circuit 4 and a demultiplexing circuit 5, and inputted to a flicker state detecting circuit 11. A flicker signal generating circuit 12, a flicker state detecting circuit 15, and a flicker state detecting circuit 17 correspond to the flicker signal generating circuit 6, the flicker state detecting circuit 9, and the flicker state detecting circuit 11, respectively. In such a state, the results of detection from the flicker state detecting circuits 11, 15 are compared with the other station connecting state and its own station loop back testing state. In such a way, where a faulty part exists can be deicided.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a failure determination method for equipment, and particularly to a failure determination method for digital transmission equipment.

(Prior Art) Conventionally, in this Hinoki digital transmission device, a failure part has been determined for a failure in the power supply system and a failure in the synchronization system by means of a synchronization signal detection means.

(Problems to be Solved by the Invention) In the above-mentioned conventional failure location determination method of digital transmission equipment, a synchronization system failure can be determined by the synchronization signal detection means, but it is possible to determine a synchronization system failure by using the synchronization signal detection means. Not only is it difficult to judge data errors caused by a fault as a fault, but it is also difficult to distinguish between a fault in the multiplexer circuit on the transmitting side and a fault in the demultiplexer circuit on the receiving side.

An object of the present invention is to supply a flicker signal to the input of the transmitter of the digital transmission equipment of the own station and the other station, and return the flicker signal transmitted from the other station from the output of the receiver to the input of the transmitter. By detecting the flicker operation of the flicker signal, it is possible to eliminate the above drawback and distinguish between a fault in the transmitting circuit and a fault in the receiving circuit. 1K 7th police officer 2 first place judgment - No. 7 type was surrendered).

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= ↑'s terminal, -χ・j's flicker i, Kagyu SenB, -
5c-↑ flicker state detection means and gold l1. Be prepared! 7, -
] - I scatter the valley part 6r of the Digigel transmission model containing 18 stations because it is a pair of sets - ♀Easy to separate 1'1', one pair and 18 stations.

Terminal station with -1 -1, zo n-: Multiplexer circuit and demultiplexer circuit l #i schemer 1.7, capable of transmitting data from one station to the other using a transmission line It is.

14 Flicker signals + i generating means 0.61 It is a rounded type that adds the flicker signals of 0.61 and 81 pairs of terminal stations as part of the transmission data 2).

A pair of flicker-like, excellent test means are -f of a pair of terminal stations:
'ノ]2zono1. This is the A-th one from the center of Flicker No. 14.

(Example) Next, an explanation will be given of the complete drawings for [1] when a misfire occurs.

FIG. 1 is a 2-note diagram illustrating the faulty part determination method of the invention ζ/CJ.

1st Itsu IU shoes [, l (zu, already i ↑: f digital transmission j ζ device, 2, 4 are so 1 so f L;, 1 multigrax circuit on the ζ side, '3゜3) (・、j、Sozu 1st arrival、Business 1i'ii'fllll's f-γ multibutton ri 4
j, circuit? , (J side is the child 1. Each one is free, Ef ””J side, main circuit, 9. Xi,
15. 17 は-　〕1. -zo=fshi: Noritsuka-like deafness L1j circuit 2).

Digital transmission P, 1 time l is - 1 lug 1/Ifj from Kuza circuit 2 °τ lug l/99 +
! +1 path [input to j or (・”, multig[/
Fusa circuit/1 output transmission bow/Diljeep 1/Kuza times)
It is possible to make a 1° diagnosis dff for yourself in the calendar year ＼ person number 5 and 9, CnJCJ (self L4' 斤a l-' at, '4J v otoei).

Noritsuka Shin-;zu° also exceeds 1) Nagisa fii, i:, I1 Toshiki 7-1..., - Flicker (J's full output., 1
Route J 7' soil norikkaiji- is multiple l/ri multi' times kneeling, 2 oj: and demarunapu 1/kuda degree circuit; 31/
Transmit this to mail 17, IM line s -, h t11
I'm sorry. The 11th issue of Jozu Iwao δ1 is the Noritsuka state detection episode! ? It is input to the 1i29 output and multiplex 1/gusa circuits 4. The signal on the signal @8 is transmitted via the multiplexer circuit 4 and the demultiplexer circuit 5.
, is sent out on signal line 10. Flicker signal generation circuit 1
2. Signal line 13, signal line 14, flicker state detection circuit 1
5. The signal line 16 and flicker state detection circuit 17 are
14 corresponds to the flicker force signal generation circuit 6, signal line 7, signal line 8, flicker state detection circuit 9, 11 line 101, and flicker-like deafness output circuit 11.

The detection result of the flicker state when the fault pattern is -T:'' is 1.J:9iCZ shown in FIG.

In FIG. 2, the connection state of the other station is a normal opposite connection state, and the local station return state is a local station return test state performed for the purpose of self-diagnosis.

In other words, the side-by-side results from the flicker state detection circuits 11 and 15 are compared with the connection state of the other station and the return test state of the own station! , 9. Fault location is multiple 1. /multiplexer circuit 2, demultiplexer circuit 3% multiplexer circuit 4%
It is determined whether it is the inlet of the demultiplier 1/comb circuit 5, and ζ is performed. Is that possible? -1 (Efficacy of the invention!, i11.) 1st explanation 7'lTh It is added as a part of the input f-even, and on the output side θ7:, the 10th distribution signal is returned to the receiver side, and the flicker operation is fully detected, l:l. )
This has the effect of being able to identify the true fault location without overlooking any faults in the digital transmission equipment.

Ma/(-, Flicka Toshita Full Inmor, Yasumi Asui) 'Rujin Toni:,! :su, display message: lil gutter flashing f,
-' ``Since there is C, normal feathering ~ If there is C, it is also used as a proof of raztsu + i - ``There is an effect called ``kiruto'', ψ mi.

[Brief explanation of the drawing]

FIG. 1 υ72 is a block diagram illustrating an embodiment of the J:6 fault identification method. The second south is an explanatory diagram showing an example of failure determination. 1...Digital transmission equipment 2, 4...Multiplexer circuit 3.5...Demultiplexer circuit 6.12...Flicker Signal generation circuits 9.11, 15.17...flicker state configuration circuits

Claims (1)

[Claims] A pair of terminal stations each having a multiplexer circuit and a demultiplexer circuit and capable of returning transmitted data to the own station via a transmission line, and a flicker signal being added as part of the transmitted data at each of the pair of terminal stations. each of the digital transmission apparatuses including a pair of flicker signal generating means and a pair of flicker state detection means for detecting the presence of the flicker signal in each of the pair of terminal stations; A failure part determination method characterized in that it is configured to be able to determine a failure in a part.