CN205179179U - Can fix a position circuit of ticket distributing position ringing current puncture trouble - Google Patents
Can fix a position circuit of ticket distributing position ringing current puncture trouble Download PDFInfo
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- CN205179179U CN205179179U CN201521022400.9U CN201521022400U CN205179179U CN 205179179 U CN205179179 U CN 205179179U CN 201521022400 U CN201521022400 U CN 201521022400U CN 205179179 U CN205179179 U CN 205179179U
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Abstract
The utility model relates to a can fix a position circuit of ticket distributing position ringing current puncture trouble, including ringing current detection circuitry, ringing current puncture trouble detection circuitry and false load switching circuit, the triode T1 through ringing current detection circuitry detects whether there is the ring, puncture stabilivolt D6 among the failure detector circuit through the ringing current and judge the machine is got by the telephone whether, puncture failure detector circuit according to ringing current detection circuitry and ringing current and determine and whether break off false load resistance RL and ticket distributing position exchange interface major loop L1 or put through with the L2 major loop to the solution punctures the problem that incoming telegram that the trouble leads to can't be answered because of the ringing current, and troubleshooting realizes ticket distributing position safety steady job.
Description
Technical field
The utility model relates to dispatching desk control field, particularly relates to a kind of circuit of locating dispatching desk ringing-current breakdown fault.
Background technology
Dispatching desk is widely used in electric power, railway, public security, a kind of particular terminal equipment of the dispatch control departments such as aviation, be connected with adopting digital circuit interface between voice exchange, the multiple dispatching desk of usual employing forms same dispatching desk group and runs, there is quick (hot key) calling and pickup feature, when there being phone incoming call, the telephone set that all dispatching desks of same dispatching desk group connect, send ringing tone under the ringing-current effect that just can send at each dispatching desk simultaneously, if when one of them dispatching desk is tried to be the first and is received calls, other dispatching desks with group just can stop ring immediately, and be in display in real time with the running status of other dispatching desks of group, if the phone conversed with other dispatching desks organized need be switched through, then after getting machine, only need insert strong can realization by next.
The ringing-current that dispatching desk sends to telephone set, usually 75 ± 15V/25 ± 3Hz is set to, if when having a dispatching desk or its telephone set to there is ringing-current breakdown fault in dispatching desk group (as shown in Figure 1), the impedance produced in its ringing-current breakdown process, DC impedance close when being easy to occur getting machine with telephone set, so switch just can be judged as that the telephone set of dispatching desk has entered and be got machine state, when telephone set enter get machine state time, switch just can send immediately and stop sending the order of ringing-current.Under the effect not having ringing-current voltage, telephone set just can recover paramount DC impedance state, when telephone set recovers paramount DC impedance state, switch just can be judged as that the telephone set of dispatching desk enters hook state, so switch just can send the order of taking out stitches immediately.Therefore, when ringing-current breakdown fault appears in a dispatching desk or the telephone set that is connected with dispatching desk, when there being phone incoming call, namely there will be the phenomenon of just on-hook immediately after fast fetching machine, thus cause all dispatching desks of this dispatching desk group, all cannot answer the consequence of all Inbound Calls.During machine of getting due to equivalence, compole is short, and in the equipment such as switch, dispatching desk and recording system, all cannot provide can the data of fault analysis and judgement, therefore, serious are had influence on safety, stable carrying out the work.
Humidity rainy season or service life longer dispatching desk and telephone set in; frequent meeting is random there is this type of fault; and usually only have the fault time of a few minutes; the difficulty of fixing a breakdown is very large; if have some dispatching desks to distribute different floors or area with group scheduling platform, the difficulty of fixing a breakdown can be larger.
Popularizing the today using touch-tone telephone, and under the condition that the connection distance of switch or dispatching desk and telephone set is closer again, being reduced by ringing-current voltage is the effective way eliminating or reduce ringing-current breakdown fault, but because of: one is that existing ringing current generator adopts highly integrated circuit to form and not easily adjusts; If two is that ringing-current voltage is reduced, the existing index request of Ministry of Industry and Information can not be met, and do not adopted by manufacturer.
Summary of the invention
The purpose of this utility model is for above weak point, provides a kind of circuit of locating dispatching desk ringing-current breakdown fault, the problem that the electricity that solution breakdown fault causes cannot be answered.
The scheme that the utility model technical solution problem adopts is: a kind of circuit of locating dispatching desk ringing-current breakdown fault, comprise bell flowing detecting circuit, ringing-current breakdown fault testing circuit and dummy load switching circuit, described bell flowing detecting circuit is electrically connected by the base stage of electric capacity C1 one end through resistance R1, diode D5 and triode T1, and the collector electrode of triode T1 is connected to external power source positive pole through resistance R7; The other end of electric capacity C1 and input L1 and L2 of dispatching desk exchange interface major loop are electrically connected; Described ringing-current breakdown fault testing circuit is electrically connected through the base stage of resistance R4 and triode T2 by the anode of a voltage-stabiliser tube D6, and the collector electrode of triode T2 is connected to external power source positive pole through resistance R6 and is electrically connected with the base stage of triode T3; The collector electrode of triode T3 and the emitter of triode T1 are electrically connected, and the negative electrode of voltage-stabiliser tube D6 is electrically connected through input L1 and L2 of a bridge rectifier bridge and dispatching desk exchange interface major loop; Described dummy load switching circuit is made up of a triode T4 and dummy resistance RL, the base stage of described triode T4 and the emitter of triode T3 are electrically connected, the collector electrode of triode T4 is connected with the negative electrode of voltage-stabiliser tube D6 through dummy resistance RL, and the emitter of triode T4 is connected to another output of bridge rectifier bridge; The base stage of described triode T2 is all connected with the emitter of triode T4 with the emitter of emitter, triode T3, the base stage of triode T1.
Further, input L1 with L2 of described dispatching desk exchange interface major loop is connected with one end of electric capacity C1 through described bridge rectifier bridge; Output one end of described bridge rectifier bridge is connected with the negative electrode of voltage stabilizing end D6, and the other end is connected to the emitter of triode T4.
Further, the emitter of described triode T3 is connected with the emitter of triode T4 through electric capacity C4.
Further, the base stage of described triode T1 is connected with the emitter of triode T4 through resistance R2, R3.
Further, the base stage of described triode T2 is connected with the emitter of triode T4 with electric capacity C3 through resistance R5 respectively, and is connected with the emitter of described triode T2; The output of described resistance R4 be connected with electric capacity C3 with resistance R5 respectively.
Further, the emitter of described triode T1 is also electrically connected through the base stage of electric capacity C2 or resistance R2 and triode T1.
Further, the puncture voltage of described voltage-stabiliser tube D6 is 48V.
Compared with prior art, the utility model has following beneficial effect: detect whether have ring by the triode T1 of bell flowing detecting circuit; Judge whether telephone set gets machine by the voltage-stabiliser tube D6 in ringing-current breakdown fault testing circuit, judge whether dummy resistance RL and dispatching desk exchange interface major loop L1 and L2 major loop disconnect or connect according to bell flowing detecting circuit and ringing-current breakdown fault testing circuit, thus solve the problem that the incoming call that causes because of ringing-current breakdown fault cannot answer, fix a breakdown, realize the work of dispatching desk safety and stability.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model patent is further illustrated.
Fig. 1 is dispatching desk and telephone interface circuit diagram.
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Fig. 1 ~ 2, the utility model embodiment provides a kind of circuit of locating dispatching desk ringing-current breakdown fault, comprise bell flowing detecting circuit, ringing-current breakdown fault testing circuit and dummy load switching circuit, described bell flowing detecting circuit is electrically connected by the base stage of electric capacity C1 one end through resistance R1, diode D5 and triode T1, and the collector electrode of triode T1 is connected to external power source positive pole through resistance R7; The other end of electric capacity C1 and input L1 and L2 of dispatching desk exchange interface major loop are electrically connected; Described ringing-current breakdown fault testing circuit is electrically connected through the base stage of resistance R4 and triode T2 by the anode of a voltage-stabiliser tube D6, and the collector electrode of triode T2 is connected to external power source positive pole through resistance R6 and is electrically connected with the base stage of triode T3; The collector electrode of triode T3 and the emitter of triode T1 are electrically connected, and the negative electrode of voltage-stabiliser tube D6 is electrically connected through input L1 and L2 of a bridge rectifier bridge and dispatching desk exchange interface major loop; Described dummy load switching circuit is made up of a triode T4 and dummy resistance RL, the base stage of described triode T4 and the emitter of triode T3 are electrically connected, the collector electrode of triode T4 is connected with the negative electrode of voltage-stabiliser tube D6 through dummy resistance RL, and the emitter of triode T4 is connected to another output of bridge rectifier bridge; The base stage of described triode T2 is all connected with the emitter of triode T4 with the emitter of emitter, triode T3, the base stage of triode T1.
In the present embodiment, input L1 with L2 of described dispatching desk exchange interface major loop is connected with one end of electric capacity C1 through described bridge rectifier bridge; Output one end of described bridge rectifier bridge is connected with the negative electrode of voltage stabilizing end D6, and the other end is connected to the emitter of triode T4.
In the present embodiment, the emitter of described triode T3 is connected with the emitter of triode T4 through electric capacity C4.
In the present embodiment, the base stage of described triode T1 is connected with the emitter of triode T4 through resistance R2, R3.
In the present embodiment, the base stage of described triode T2 is connected with the emitter of triode T4 with electric capacity C3 through resistance R5 respectively, and is connected with the emitter of described triode T2; The output of described resistance R4 be connected with electric capacity C3 with resistance R5 respectively.
In the present embodiment, the emitter of described triode T1 is also electrically connected through the base stage of electric capacity C2 or resistance R2 and triode T1, and electric capacity C2 and resistance R2 is in parallel.
In the present embodiment, the puncture voltage of described voltage-stabiliser tube D6 is 48V.
As shown in Figure 1, the feed voltage that feed circuit provides is-48V, and the circuit that the utility model provides can be connected on L1 and the L2 major loop of dispatching desk switch or a, b circuit of telephone set.
As shown in Figure 2, the circuit that the utility model provides, detects whether have ring by the triode T1 of bell flowing detecting circuit; Judge whether telephone set gets machine by the voltage-stabiliser tube D6 in ringing-current breakdown fault testing circuit, judge whether dummy resistance RL and dispatching desk exchange interface major loop L1 and L2 major loop disconnect or connect according to bell flowing detecting circuit and ringing-current breakdown fault testing circuit, thus solve the problem that the incoming call that causes because of ringing-current breakdown fault cannot answer, fix a breakdown, realize the work of dispatching desk safety and stability.
By this circuit, machine of the getting state caused by ringing-current breakdown fault is extended for a predetermined time (as 1-3 second), can realize following object:
(1) on the display screen of each dispatching desk of dispatching desk group, can analyze and judge that ringing-current punctures the number of dispatching desk, reach the object of location ringing-current breakdown fault dispatching desk;
(2) by the function of dispatching desk Converting telephone, the phone connecing ringing-current breakdown fault dispatching desk can be robbed, or callback can be carried out according to the title of caller identification or number;
(3) from the sound recordings of calling of switchboard record or recording system, the information analyzed and judge ringing-current breakdown fault dispatching desk can be found.
Dummy resistance RL can select larger resistance as far as possible, can not cause bad impact to the speech quality of dispatching desk.If the Lifetime of dummy resistance RL and L1 and L2 major loop is predefined for 3 seconds, then a dispatching desk can not carry out continuously receiving calls, carrying out receiving calls or initiate outbound calling operation again in 3 seconds, because the probability of this situation is not high, influence time is very short, therefore this shortcoming can be allowed to exist.
The circuit that the utility model provides, only for analytical work principle, can be optimized according to actual, and the components and parts such as integrated circuit, photoelectrical coupler, relay can also be adopted to form.
A kind of specific implementation process of locating the circuit of dispatching desk ringing-current breakdown fault that the utility model provides is as follows:
When dispatching desk is in static state (namely telephone set is in without ring, without getting machine state), because of without ringing-current, the triode T1 of bell flowing detecting circuit ends because of the trigger current without ringing-current, because nothing gets machine (telephone set DC circuit is disconnected), voltage-stabiliser tube D6 punctures because of the high feed voltage of-48V, the forward bias that triode T2 provides through resistance R4, resistance R5, electric capacity C3 and conducting, triode T3 ends.Because triode T1 cut-off, triode T3 end, triode T4 cannot obtain forward bias current and end, and dummy resistance RL and L1 and L2 major loop disconnect.
When dispatching desk initiates to breathe out, the triode T1 of bell flowing detecting circuit is because ending without ringing-current trigger current, voltage-stabiliser tube D6 because getting low-voltage that machine is formed and cannot puncture and ending, triode T2 also ends without forward bias voltage, triode T3 conducting, make the triode T4 of dummy load switching circuit obtain forward bias current because triode T1 ends and end, therefore dummy resistance RL and L1 and L2 major loop disconnect.
During incoming call dispatching desk, by switch command scheduling platform to the ringing telephone stations connected separately, the triode T1 of bell flowing detecting circuit is by electric capacity C1, resistance R1, diode D5, resistance R2, electric capacity C2, resistance R3 circuit, obtain forward bias current and conducting, and made by the energy storage effect of electric capacity C2 T1 maintain conducting one predetermined time.Now, if answer without getting machine, ringing-current breakdown fault testing circuit, voltage-stabiliser tube D6 conducting because of high electrical breakdown, the forward bias that triode T2 provides through resistance R4, resistance R5, electric capacity C3 and conducting, triode T3 ends.Because triode T1 cut-off, triode T3 end, triode T4 cannot obtain forward bias current and end, and dummy resistance RL and L1 and L2 major loop disconnect.If the machine of getting is answered, voltage-stabiliser tube D6 because getting low-voltage that machine is formed and cannot puncture and ending, triode T2 also ends without forward bias voltage, triode T3 conducting, because triode T1 is still in maintenance conducting state, therefore triode T4 conducting because of the conducting of triode T1, T3, dummy resistance RL and L1 is communicated with L2 major loop, and makes T4 maintain conducting one predetermined time because of the energy storage effect of electric capacity C4.
In sum, a kind of circuit and detection method thereof of locating dispatching desk ringing-current breakdown fault that the utility model provides, can thus solve the problem that the incoming call that causes because of ringing-current breakdown fault cannot answer, fix a breakdown, realize the work of dispatching desk safety and stability.
The above-listed preferred embodiment that the utility model provides; the purpose of this utility model, technical scheme and advantage are further described; be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. can locate the circuit of dispatching desk ringing-current breakdown fault for one kind, it is characterized in that: comprise bell flowing detecting circuit, ringing-current breakdown fault testing circuit and dummy load switching circuit, described bell flowing detecting circuit is electrically connected by the base stage of electric capacity C1 one end through resistance R1, diode D5 and triode T1, and the collector electrode of triode T1 is connected to external power source positive pole through resistance R7; The other end of electric capacity C1 and input L1 and L2 of dispatching desk exchange interface major loop are electrically connected; Described ringing-current breakdown fault testing circuit is electrically connected through the base stage of resistance R4 and triode T2 by the anode of a voltage-stabiliser tube D6, and the collector electrode of triode T2 is connected to external power source positive pole through resistance R6 and is electrically connected with the base stage of triode T3; The collector electrode of triode T3 and the emitter of triode T1 are electrically connected, and the negative electrode of voltage-stabiliser tube D6 is electrically connected through input L1 and L2 of a bridge rectifier bridge and dispatching desk exchange interface major loop; Described dummy load switching circuit is made up of a triode T4 and dummy resistance RL, the base stage of described triode T4 and the emitter of triode T3 are electrically connected, the collector electrode of triode T4 is connected with the negative electrode of voltage-stabiliser tube D6 through dummy resistance RL, and the emitter of triode T4 is connected to another output of bridge rectifier bridge; The base stage of described triode T2 is all connected with the emitter of triode T4 with the emitter of emitter, triode T3, the base stage of triode T1.
2. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, is characterized in that: input L1 with L2 of described dispatching desk exchange interface major loop is connected with one end of electric capacity C1 through described bridge rectifier bridge; Output one end of described bridge rectifier bridge is connected with the negative electrode of voltage stabilizing end D6, and the other end is connected to the emitter of triode T4.
3. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, is characterized in that: the emitter of described triode T3 is connected with the emitter of triode T4 through electric capacity C4.
4. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, is characterized in that: the base stage of described triode T1 is connected with the emitter of triode T4 through resistance R2, R3.
5. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, it is characterized in that: the base stage of described triode T2 is connected with the emitter of triode T4 with electric capacity C3 through resistance R5 respectively, and be connected with the emitter of described triode T2; The output of described resistance R4 be connected with electric capacity C3 with resistance R5 respectively.
6. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, is characterized in that: the emitter of described triode T1 is also electrically connected through the base stage of electric capacity C2 and resistance R2 and triode T1 respectively, and electric capacity C2 and resistance R2 is in parallel.
7. a kind of circuit of locating dispatching desk ringing-current breakdown fault according to claim 1, is characterized in that: the puncture voltage of described voltage-stabiliser tube D6 is 48V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521022400.9U CN205179179U (en) | 2015-12-10 | 2015-12-10 | Can fix a position circuit of ticket distributing position ringing current puncture trouble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521022400.9U CN205179179U (en) | 2015-12-10 | 2015-12-10 | Can fix a position circuit of ticket distributing position ringing current puncture trouble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205179179U true CN205179179U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521022400.9U Withdrawn - After Issue CN205179179U (en) | 2015-12-10 | 2015-12-10 | Can fix a position circuit of ticket distributing position ringing current puncture trouble |
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| Country | Link |
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| CN (1) | CN205179179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105357406A (en) * | 2015-12-10 | 2016-02-24 | 厦门市广哈通信产品有限公司 | Circuit capable of locating ringing current breakdown fault of dispatching desk, and detection method for ringing current breakdown fault of dispatching desk |
-
2015
- 2015-12-10 CN CN201521022400.9U patent/CN205179179U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105357406A (en) * | 2015-12-10 | 2016-02-24 | 厦门市广哈通信产品有限公司 | Circuit capable of locating ringing current breakdown fault of dispatching desk, and detection method for ringing current breakdown fault of dispatching desk |
| CN105357406B (en) * | 2015-12-10 | 2018-02-02 | 厦门市广哈通信产品有限公司 | A kind of circuit and its detection method for positioning dispatching desk ringing-current breakdown fault |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20180202 |
|
| AV01 | Patent right actively abandoned |