CN108566495B - User circuit supporting full calling function - Google Patents
User circuit supporting full calling function Download PDFInfo
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- CN108566495B CN108566495B CN201810556712.XA CN201810556712A CN108566495B CN 108566495 B CN108566495 B CN 108566495B CN 201810556712 A CN201810556712 A CN 201810556712A CN 108566495 B CN108566495 B CN 108566495B
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- protection device
- ringing
- relay
- module
- resistor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/80—Telephone line holding circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
- H04M19/047—Vibrating means for incoming calls
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Emergency Protection Circuit Devices (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a user circuit supporting a full call function, which comprises a telephone interface, a dispatcher interface, an off-hook module, a relay, a ringing module, a constant current source circuit and a decoding chip circuit, wherein the telephone interface is connected with the off-hook module, the off-hook module is connected with the dispatcher interface through the relay, and the relay is respectively connected with the ringing module, the constant current source circuit and the decoding chip circuit. By the mode, the invention provides the user circuit supporting the full call function, aiming at the problem that the conventional dispatching machine cannot force all users of the whole dispatching machine to ring for a long time in emergency, the invention better avoids the time delay of acquiring the dispatching center command caused by the fact that the dispatching center command cannot ring in time by independently distributing a constant current unit to each telephone, and obviously reduces the occurrence probability of major safety accidents in places such as underground coal mines, medical institutions and the like.
Description
Technical Field
The present invention relates to the field of telephone switching, and more particularly to a subscriber circuit supporting a full call function.
Background
The scheduling machine cannot force all users of the whole machine to ring for a long time under the emergency condition, so that the problem that personnel in a coal mine or other important places can not timely acquire the time of a scheduling center command due to the fact that the users cannot ring in time is avoided, and the probability of causing major safety accidents is increased.
Disclosure of Invention
The invention mainly solves the technical problem of providing a user circuit supporting a full call function, and aims at solving the problem that the existing dispatching machine cannot force all users of the whole dispatching machine to ring for a long time in emergency, and by independently distributing constant current units for each telephone, the time delay of acquiring dispatching center commands caused by the fact that the dispatching center commands cannot ring in time is well avoided, and the occurrence probability of major safety accidents in places such as underground coal mines and medical institutions is obviously reduced.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a support user circuit of full call function, includes telephone interface, dispatcher interface, off hook module, relay, ringing module, constant current source circuit and decoding chip circuit, telephone interface connection off hook module, off hook module passes through the relay and connects dispatcher interface, the relay is connected ringing module, constant current source circuit and decoding chip circuit respectively, off hook module contains the opto-coupler and sets up diode, first electrolytic capacitor, second electrolytic capacitor, first resistance, second resistance and the thermistor protection device on the circuit with telephone interface connection, ringing module contains the ringing generation module of being connected with the relay and sets up resistance, thermistor protection device and the piezoresistor protection device on the circuit.
In a preferred embodiment of the invention, the relay is connected with the constant current source circuit and the decoding chip circuit through two normally closed ports respectively.
The beneficial effects of the invention are as follows: the user circuit supporting the full call function solves the problem that the conventional dispatching machine cannot force all users of the whole machine to ring for a long time in emergency, and the time delay of acquiring dispatching center commands caused by the fact that the constant current units cannot ring in time is well avoided by independently distributing the constant current units to each telephone, so that the occurrence probability of major safety accidents in places such as underground coal mines and medical institutions is remarkably reduced.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a block diagram of a preferred embodiment of a subscriber circuit supporting a full call function in accordance with the present invention;
FIG. 2 is a block diagram of a preferred embodiment of a subscriber circuit supporting a full call function in accordance with the present invention;
fig. 3 is a block diagram of a preferred embodiment of a subscriber circuit supporting a full call function in accordance with the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, an embodiment of the present invention includes:
the utility model provides a subscriber circuit supporting full call function, includes telephone interface 1, dispatcher interface 2, offhook module 3, relay 4, ringing module 5, constant current source circuit 6 and decoding chip circuit 7, telephone interface 1 connects offhook module 3, offhook module 3 passes through relay 4 and connects dispatcher interface 2, relay 4 connects ringing module 5, constant current source circuit 6 and decoding chip circuit 7 respectively, offhook module 3 contains the opto-coupler of being connected with telephone interface 1 and sets up diode, first electrolytic capacitor, second electrolytic capacitor, first resistance, second resistance and the thermistor protection device on the circuit, ringing module 5 contains the ringing current generation module of being connected with relay 4 and sets up resistance, thermistor protection device and the piezoresistor protection device on the circuit.
Wherein, the relay 4 is respectively connected with the constant current source circuit 6 and the decoding chip circuit 7 through two normally closed ports.
The working principle is summarized as follows: the ringing voltage and ringing current when ringing on telephone line is not uniformly supplied by whole machine public power supply, instead, every unit board is independently configured, and-48V voltage is supplied to ringing module 55, so that the ringing voltage can be supplied to user circuit in the unit board for use, so that the problems of machine failure, telephone failure and ringing or ringing weak can be solved. Specifically, two lines, namely A1 and B1, respectively, wherein A1 is connected with the 1 end of the thermistor protection device 1RT1, and after coming out from the 2 end, the two lines are respectively connected with the 1 end of the varistor protection device 1RV1 and the 1 end of the resistor 1R4, the 1 end of the electrolytic capacitor 1EC2, the 2 end of the electrolytic capacitor 1EC1, the 2 end of the diode 1D1 and the 2 end of the optocoupler 1OC 1; the 2-end of the piezoresistor protection device 1RV1 is connected to the EARTH; the 2 end of the resistor 1R4 is connected with the 8 end of the relay 441RL2, the 2 end of the electrolytic capacitor 1EC2 and the 2 end of the resistor 1R 2; the 1 end of the optocoupler 1OC1 is connected with the 1 end of the diode 1D1, the 1 end of the electrolytic capacitor 1EC1 and the 1 end of the resistor 1R 2; the 3 end of the output end of the optical coupler is connected with GND, the 4 end of the optical coupler 1OC1 is connected with the off-hook information detection point DET1 and the 2 end of the resistor 1R1, and the other end of the resistor is connected with VCC; b1 is connected with the 1 end of the thermistor protection device 1RT2, and is connected with the 1 end of the piezoresistor protection device 1RV2 and the 3 end of the relay 441RL2 after coming out from the 2 end; the 2 end of the piezoresistor protection device 1RV2 is connected with the EARTH; two groups of normally closed ends of the relay 441RL2 are respectively connected with A and B and are connected with a rear constant current source circuit 6 and a coding and decoding chip circuit 7; -48V voltage is provided to 3 and 4 ends of the ringing current generating module U1, GND is connected to 5 ends of the ringing current generating module U1, and 1 end of the ringing current generating module U1 is connected to 1 end of the varistor protection device 1RV12 and 2 ends of the thermistor protection device 1RT 12; the 1 end of the thermistor protection device 1RT12 is connected with the 2 end of the resistor 1R 14; the 1 end of the resistor 1R14 is connected to the 7 end of the relay 441RL 2; the 2 end of the ringing current generating module U1 is connected with the 2 end of the piezoresistor protection device 1RV12 and the 2 end of the thermistor protection device 1RT11, and the 1 end of the thermistor protection device 1RT11 is connected with the 4 end of the relay 441RL 2.
In summary, the invention provides a user circuit supporting a full call function, which aims at solving the problem that the existing dispatcher cannot force all users of the whole dispatcher to ring for a long time in emergency, and by independently distributing constant current units for each telephone, the time delay of acquiring dispatching center commands caused by the fact that the call cannot be timely ringing is well avoided, and the occurrence probability of serious safety accidents in places such as underground coal mines and medical institutions is obviously reduced.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (1)
1. The user circuit supporting the full call function is characterized by comprising a telephone interface, a dispatcher interface, an off-hook module, a relay, a ringing module, a constant current source circuit and a decoding chip circuit, wherein the telephone interface is connected with the off-hook module, the off-hook module is connected with the dispatcher interface through the relay, the relay is respectively connected with the ringing module, the constant current source circuit and the decoding chip circuit, the off-hook module comprises an optocoupler connected with the telephone interface, a diode, a first electrolytic capacitor, a second electrolytic capacitor, a first resistor, a second resistor and a thermistor protection device 1RT1, and the ringing module comprises a ringing current generation module connected with the relay, a resistor 1R14, thermistor protection devices 1RT11 and 1RT12 and a piezoresistor protection device 1RV12;
wherein, ringing voltage and ringing current when ringing on the telephone line, by each unit board independent configuration, the voltage provides the ringing module, produces the ringing voltage and provides the user circuit in this unit board;
the telephone interface is connected with the 1 end of the thermistor protection device 1RT1, and is respectively connected with the 1 end of the piezoresistor protection device 1RV1, the 1 end of the resistor 1R4, the 1 end of the second electrolytic capacitor, the 2 end of the first electrolytic capacitor, the 2 end of the diode and the 2 end of the optocoupler after coming out from the 2 end;
the 2-end of the piezoresistor protection device 1RV1 is connected to the EARTH; the 2 end of the resistor 1R4 is connected with the 8 end of the relay, the 2 end of the second electrolytic capacitor and the 2 end of the second resistor;
the 1 end of the optocoupler is connected with the 1 end of the diode, the 1 end of the first electrolytic capacitor and the 1 end of the second resistor;
the output 3 of the optical coupler is connected with GND, the 4 end of the optical coupler is connected with the off-hook information detection point and the 2 end of the first resistor, and the 1 end of the first resistor is connected with VCC;
the interface of the dispatcher is connected with the 1 end of the thermistor protection device 1RT2, and the interface of the dispatcher is connected with the 1 end of the piezoresistor protection device 1RV2 and the 3 end of the relay after coming out from the 2 end;
the 2 end of the piezoresistor protection device 1RV2 is connected with the EARTH;
the two groups of normally closed ends of the relay are respectively connected to the constant current source circuit and the decoding chip circuit;
the voltage is provided to the 3 and 4 ends of the ringing current generating module, GND is connected with the 5 end of the ringing current generating module, and the 1 end of the ringing current generating module is connected with the 1 end of the piezoresistor protection device 1RV12 and the 2 end of the thermistor protection device 1RT 12;
the 1 end of the thermistor protection device 1RT12 is connected with the 2 end of the resistor 1R 14;
the end 1 of the resistor 1R14 is connected with the end 7 of the relay;
the 2 end of the ringing current generating module is connected with the 2 end of the piezoresistor protection device 1RV12 and the 2 end of the thermistor protection device 1RT11, and the 1 end of the thermistor protection device 1RT11 is connected with the 4 end of the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556712.XA CN108566495B (en) | 2018-05-31 | 2018-05-31 | User circuit supporting full calling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556712.XA CN108566495B (en) | 2018-05-31 | 2018-05-31 | User circuit supporting full calling function |
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| Publication Number | Publication Date |
|---|---|
| CN108566495A CN108566495A (en) | 2018-09-21 |
| CN108566495B true CN108566495B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810556712.XA Active CN108566495B (en) | 2018-05-31 | 2018-05-31 | User circuit supporting full calling function |
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| CN108566495A (en) | 2018-09-21 |
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