CN2453616Y - Means for automatic monitoring fault of program control telephone communication network - Google Patents

Abstract

The utility model relates to a fault automatic monitoring device for a program control telephone communication network, which comprises a machine shell, a plurality of monitoring boards which are arranged in the machine shell, a power supply, and a sounding alarm device. Each monitoring board monitors a single telephone machine and transmission lines of the single telephone machine; each monitoring board shares the power supply and the sounding alarm device; a panel of the machine shell is provided with a plurality of indicating lamps, a power switch, and an alarm loudspeaker Y; each monitoring board is connected with two indicating lamps. The monitoring device can automatically display and alarm the states of signal lines which are arranged in the telephone communication network, such as direct or indirect short circuit, broken circuit, normal, etc. Serviceman can repair fault initiatively, exactly, and in time according to light position of the indicating lamps of the panel, and the utility model is suitable for various SPC telephone exchanger.

Description

The automatic monitoring machine of program controlled telephone communication network fault

The utility model relates to the automatic monitoring machine of a kind of network failure, is a kind of automatic monitoring machine of fault that is used for the program controlled telephone communication network specifically.

At present, each program controlled telephone communication network is config failure automated watch-keeping facility not all, each user's telephone transmission line and telephone terminal in the belonging network, and Chang Yin makes moist, reasons such as aging, external force open circuit short-circuit between conductors or signal, cause communication quality to descend or can't converse at all.When this class fault took place in the past, the telephone network system maintenance personal can't know that fault has taken place which bar circuit, the maintenance of just sending someone after must being reported by 112 phones by the user.The mode of this passive maintenance has not only increased telephone subscriber's worry, also can cause the blindness in the maintenance management, has a strong impact on the service quality of telecommunication bureau.

The purpose of this utility model provides the automatic monitoring machine of a kind of program controlled telephone communication network, it can show each telephone in this network or short/open fault and the nature of trouble on the adapted transmission line with it automatically, allow the attendant accurately, in time, initiatively go maintenance, reduce telephone subscriber's loss and worry, improve the credit worthiness of user telecommunication bureau.

The purpose of this utility model is achieved in that the administrative center at the program controlled telephone communication network, be that one of serial connection comprises a plurality of monitoring boards, power supply in casing and the casing, the automatic monitoring machine of program controlled telephone network that audio alerting unit is formed in the phone transmission circuit of stored-program control exchange.Each monitoring board Electricity Federation is connected to a pair of telephone transmission line of a telephone in the monitoring machine, and the shared power supply of each monitoring board and a warning device are provided with a plurality of indicator lights on the panel of casing, and each monitoring board is electrically connected with two indicator light FD ₁, FD ₂, in order to indication institute connect telephone and transmission line thereof normally, short circuit or open-circuit working state.When the transmission line that a phone or multi-section telephone is arranged and connected in the program controlled telephone network broke down, alarm sound will take place in audio alerting unit, just had corresponding indicator light bright or go out on the display screen of casing.Maintenance personal's state bright according to indicator light or that go out is determined location of fault and character timely.Also be provided with the loud speaker Y of mains switch K and warning device on the machine shell panel.

The utility model has the advantages that: 1, be installed in the programme-controlled exchange machine room because of this monitoring machine, the maintenance operator on duty can find the fault of each subscriber phone in the network and the character of fault thereof timely, notify the maintenance personal to go to fault in-situ to get rid of, realize in time, accurately, the purpose of initiatively getting rid of the telephone network fault reduces user's worried and loss, increases Telephone Management Agency department good service image.2, the power supply of this monitoring machine and warning device are global facility, and telephone of every increase only need increase and comprises 4 crystal, three utmost point T ₁～T ₄, therefore the monitoring board of several crystal diodes and small quantities of usual element has circuit reasonable in design, increases few, easy to operate, the easy to utilize advantage of cost.

The utility model is described in further detail below in conjunction with drawings and Examples;

Fig. 1 is a structural representation block diagram of the present utility model;

Fig. 2 is an electrical schematic diagram of the present utility model.

One, the utility power of monitor:

220 volts of AC power are through transformer B step-down, D ₁～D ₄Bridge rectifier and filter capacitor C ₁After, export three direct voltage V _A, V _B, V _CThe first via is through current-limiting resistance R ₁, two voltage stabilizing didoe WD ₁, WD ₂With filtering capacitor C ₂After provide galvanic current to press V _A, the choose reasonable resistance R ₁, voltage-stabiliser tube WD ₁, WD ₂Parameter, make V _AValue is lower than the voltage V line that SPC telephone exchange flows to telephone transmission line, again a little more than this voltage of minimum operating voltage V of telephone set _APower supply comparative voltage as the indirect short trouble circuit of each monitoring board monitoring telephone signal line; The second the tunnel is through current-limiting resistance R ₂, the three-terminal voltage-stabilizing ic chip ₁With filter capacitor C ₃Stable voltage V of back output _C, select the three-terminal voltage-stabilizing ic chip ₁Model, make output voltage V _CValue a little more than the telephone set off-hook after stored-program control exchange flow to the voltage of telephone set, this voltage V _CPower supply comparative voltage as each monitoring telephone set off-hook or conversation signal circuit; Third Road is with voltage V _CAgain through two crystal diode D ₅, D ₆Stable voltage V of output after the step-down _B, this voltage V _BWill be as the power supply comparative voltage of each monitoring board monitoring holding wire direct short-circuit faulty circuit of answering the call.

Two, telephone signal line operating state just often:

When two holding wires of each telephone set in the programme-controlled telephone system network were working properly, the voltage V line on the holding wire can be greater than first burning voltage V _A, the 3rd burning voltage V _BWith second burning voltage V _C, this moment, negative pole was connected on three crystal diode D on the holding wire ₇, D ₈, D ₁₀Equal admittances not, transistor T ₁, T ₂, T ₃All by T ₁, T ₂, T ₃Emitter be high level, transistor T ₃The not adhesive of relay J of emitter serial connection; NAND gate IC ₂Because of two input pins are high level, so its output pin is a low level, holding wire short circuit indicator light FD ₁Keep no electricity to extinguish state; Be serially connected in two crystal diode D on the switch output signal line negative line this moment ₁₁, D ₁₂, because of forming loop conducting, D with switch, holding wire, telephone set ₁₁, D ₁₂The pressure drop of two pipes makes T ₄Conducting, the holding wire indicator light FD that opens circuit ₂Keep the electrified light emitting state, simultaneously the pronunciation ic chip of warning device ₃Because of non-transformer voltage is not worked, loud speaker Y keeps the not state of sounding sound.

Three, the indirect short circuit monitoring, alarming of telephone wire in the network:

After two holding wires of telephone set cause indirect short circuit owing to reasons such as aging, rainwater, humidities, the voltage that makes SPC telephone exchange flow to this telephone set holding wire is dropped to the minimum normal working voltage of telephone set, and this voltage is greater than off-hook or conversation voltage, crystal two utmost point D ₇Conducting, transistor T ₁Because of base potential reduces by by becoming conducting, make the emitter of this pipe become low level by high level, this low level is through resistance R ₄Be connected to NAND gate IC with the normally closed contact of relay J ₂An input pin, IC ₂Output become high level by low level, this level passes through resistance R on the one hand ₉Make line short light-emitting diode FD ₁Electrified light emitting is on the other hand through crystal diode D ₁₃, resistance R ₁₃, capacitor C ₄Make sound IC actuated IC of warning device ₃Energising work is through transistor T ₅Promote loud speaker Y and send alarm sound.

Four, the situation of holding wire direct short-circuit:

After two signals of telephone set cause direct short-circuit for a certain reason, will be with making SPC telephone exchange flow to the voltage V line of this holding wire far below the voltage in off-hook or when conversation, even be zero.Make negative pole be connected to diode D on this line ₇, D ₈, D ₁₀Be admittance, transistor T ₁, T ₂, T ₃All reduce conducting, T because of base voltage ₁, T ₂, T ₃Emitter become low level by high level, be connected electrically in transistor T ₃The adhesive of the relay J of emitter, the normally closed contact of J disconnect the normal opened contact contact, make NAND gate IC ₂An input pin still be high level, but this moment IC ₂Another input pin and crystal three utmost point T of conducting state ₂Emitter link to each other and become low level, so NAND gate IC by high level ₃Output by the low high level, holding wire short circuit light-emitting diode FD of becoming ₁Conducting is luminous, simultaneously through diode D ₁₃, resistance R ₁₃, capacitor C ₄, sound IC actuated IC ₃Transistor T ₅Drive loud speaker Y and send alarm sound.

Five, telephone set off-hook or talking state are not reported to the police:

When two lines of telephone set did not break down, though in telephone set off-hook or talking state, the voltage of the holding wire that SPC telephone exchange is carried was low to about 10 volts, because of electric power output voltage V _A＞V _C＞10 volts, and V _B＜10 volts, so the time crystal diode D ₇, D ₁₀Conducting, transistor T ₁, T ₃Also conducting, their conducting makes NAND gate IC ₂The input pin that is connected to relay tip keeps high level, and crystal diode D ₈Admittance does not make transistor T ₂The remain off state, T ₂The high level of pipe emitter is electrically connected NAND gate IC ₂Another input pin, because of IC ₂Two input pins be high level, its output is low level, this low level can not drive short circuit indicator light FD ₁Luminous, can not drive alarm speaker Y sounding.Can avoid producing the situation of false alarm.

Six, telephone line breaking alarming in the network:

When the holding wire of telephone set in the programme-controlled telephone system network opens circuit for a certain reason, the crystal diode D that is connected in series in the circuit ₁₁, D ₁₂Because of no current flows through, make transistor T ₄Become by conducting and to end, be serially connected in the indicator light FD that opens circuit in this pipe collector ₂Extinguish because of no current flows through, represent that open circuit fault has taken place two signals of this telephone set.The V line is through R simultaneously ₁₀, R ₁₂, DW ₄, D ₁₄Driving comprises resistance R ₁₃, capacitor C ₄, the pronunciation ic chip ₃, transistor T ₅And the warning device of loud speaker Y sends alarm sound.

Claims (3)

1, the automatic monitoring machine of a kind of program controlled telephone communication network fault, comprise casing, a plurality of monitoring boards in the casing, power supply and audio alerting unit, it is characterized in that: in the monitoring machine, each monitoring board is connected to a pair of telephone transmission line of a telephone, the shared power supply of each monitoring board and an audio alerting unit, be provided with a plurality of indicator lights on the panel of casing, each monitoring board is electrically connected with two indicator light (FD ₁, FD ₂), connect the normal of telephone and transmission line thereof in order to indicate, weak point/open-circuit working state; Also be provided with the loud speaker (Y) of mains switch (K) and warning device on the machine shell panel, monitoring board needs only when finding that telephone set and transmission line thereof have weak point/open fault, will send alarm sound.

2, the automatic monitoring machine of fault according to claim 1 is characterized in that: described utility power is that 220 volts of AC power are through transformer B step-down D ₁～D ₄Bridge rectifier and filter capacitor C ₁After, export three direct voltage V _A, V _B, V _CFirst is through current-limiting resistance R ₁, voltage stabilizing didoe WD ₁, WD ₂With filtering capacitor C ₂The direct voltage V that the back produces _A, select resistance R ₁, voltage-stabiliser tube WD ₁, WD ₂Parameter, make V _AValue is lower than the voltage that SPC telephone exchange flows to telephone transmission line _{The V line}, again a little more than the minimum operating voltage of telephone set; Second is through current-limiting resistance R ₂, the three-terminal voltage-stabilizing ic chip ₁With filter capacitor C ₃The direct voltage V that the back produces _C, select the three-terminal voltage-stabilizing ic chip ₁Model, make output voltage V _CValue a little more than the telephone set off-hook after SPC telephone exchange flow to the voltage of telephone set; The 3rd is with voltage V _CAgain through crystal diode D ₅, D ₆The direct voltage V that produces after the step-down _B

3, the automatic monitoring machine of fault according to claim 1 and 2 is characterized in that; Described monitoring board is provided with the transistor T that is responsible for the indirect short circuit of monitoring telephone signal line ₁, the resistance R of its base stage through connecting ₅, crystal diode D ₇Be connected to the telephone signal line, its emitter is through resistance R ₃After, with direct voltage V _ALink to each other, its output is through resistance R ₄Be connected to NAND gate IC with the normally closed contact of relay J ₂An input pin; Monitoring board also is provided with the transistor T that is responsible for monitoring telephone wire direct short-circuit fault ₂, the resistance R of this pipe base stage through connecting ₇, crystal diode D ₈The back links to each other with telephone transmission line, and the emitter of this pipe is through resistance R ₆With direct voltage V _BLink to each other, receive the normal opened contact of relay J simultaneously, T ₂The pipe emitter also with NAND gate IC ₂Another input pin be electrically connected; Monitoring board also is provided with is responsible for the not transistor T of false alarm of monitoring telephone set off-hook or communication state ₃, the resistance R of the base stage of this pipe through connecting ₈With crystal diode D ₁₀After be electrically connected to telephone transmission line, the emitter of this pipe after relay J with direct voltage V _CJoin transistor T ₁, T ₂, T ₃Collector electrode all be connected with the ground of DC power supply; Also be provided with on the monitoring board and be responsible for that monitoring telephone signal line opens circuit or the transistor T of operate as normal ₄, order is serially connected with two crystal diode D in the negative electrical wire of telephone signal line ₁₁, D ₁₂, diode D ₁₂Positive pole through resistance R ₁₁Back and transistor T ₄Base stage link to each other diode D ₁₁Negative pole and transistor T ₄Emitter link to each other transistor T ₄Collector electrode in be serially connected with light-emitting diode FD ₂NAND gate IC ₂Output pin through current-limiting resistance R ₉With light-emitting diode FD ₁The back is connected IC with the ground of DC power supply ₂Output pin also through crystal diode D ₁₃And the resistance R of warning circuit ₁₃, capacitor C ₄, the pronunciation ic chip ₃With transistor T ₅Y is electrically connected with the loud speaker device.

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