CN212324570U

CN212324570U - Novel mining explosion-proof and intrinsically safe PLC control box

Info

Publication number: CN212324570U
Application number: CN202021980426.5U
Authority: CN
Inventors: 蔡先振; 涂德建; 汤伟军
Original assignee: Dianguang Explosion Proof Technology Shanghai Co ltd
Current assignee: Dianguang Explosion Proof Technology Shanghai Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-01-08
Anticipated expiration: 2030-09-11

Abstract

The utility model relates to a novel mining flame proof and essential safety type PLC control box, the flame proof cavity left side on the base is the flame proof wiring cavity, the right side is the flame proof main cavity, the flame proof wiring cavity left side sets up the cable lead-in device, be provided with the display screen on the outside front door panel of flame proof main cavity, control button, function knob, the display screen is connected to intelligent keypad through the USB cable, be provided with screw binding post, nine-core binding post, wall-through terminal between flame proof wiring cavity and the flame proof main cavity, be provided with double-deck wiring row in the flame proof wiring cavity, be provided with the programmable module group in the flame proof main cavity, intelligent network voice module unit, reputation voice module unit, prevent surging and filtering module group, transformer, network switch, the flame proof main cavity right side is provided with the; the utility model discloses the operation is more convenient, connects reliable and stable, and the integrated level is high, and the cost is effectively reduced has improved the security of flame proof equipment operation.

Description

Novel mining explosion-proof and intrinsically safe PLC control box

[ technical field ]

The utility model belongs to the technical field of mining PLC control box technique and specifically relates to a novel mining flame proof and safe type PLC control box of essence.

[ background art ]

The mining explosion-proof PLC control box is used in mines with methane mixed gas and coal dust and explosion risks. As a main device of field equipment of an automatic centralized control system, the state continuously strengthens the construction force of automation of coal mine production, and the automation, intellectualization and informatization of coal mine production are realized early. At present, most of mining explosion-proof PLC control boxes in the market have the problems of single function, large volume, poor third-party compatibility, lack of talkback function and the like, so that the operation of a user is inconvenient, the great inconvenience is brought to on-site construction, use and maintenance, and the great influence is caused on the automation, intellectualization and informatization construction of coal mine production.

A Chinese patent with an authorization publication number of CN203224744U discloses a mining explosion-proof and intrinsic safety type programmable control box, wherein a touch screen arranged in a door cover of an explosion-proof cavity can display dynamic parameter change, operation conditions and fault alarm information of equipment; the intrinsic safety power supply and the transformer which are arranged in the explosion-proof cavity can provide power supply required by the transformer, so that mutual conversion of intrinsic safety and explosion-proof signals is realized, and explosion-proof electrical equipment can be directly controlled; through the output communication interface, the mine automation system is convenient to access, and the mine automation system can be communicated with the mine intrinsic safety type wireless switch to realize centralized control and monitoring of the electromechanical equipment of the fully mechanized mining face. However, the mining explosion-proof type mining PLC control box is the same as a common mining PLC control box, and an explosion-proof shell is large in size, single in communication interface, lack of a voice talkback function, lack of a low-voltage uncovering locking device and lack of functions of an anti-surge and filtering module group. For a first party who needs to carry out automatic, intelligent and information construction of coal mine production, the investment cost is increased, and the national resources are wasted; and the explosion-proof shell is bigger, which is not beneficial to the field construction wiring and the installation and fixation.

[ contents of utility model ]

The utility model aims at solving foretell not enough and providing a novel mining flame proof and safe type PLC control box of essence, the operation is more convenient, connect reliable and stable, and the integrated level is high, effective reduce the cost, has improved the security of flame proof equipment operation.

In order to achieve the purpose, the novel mining explosion-proof and intrinsically safe PLC control box comprises an explosion-proof cavity base 1, wherein an explosion-proof main cavity 3 and an explosion-proof wiring cavity 2 positioned on the left side of the explosion-proof main cavity 3 are arranged on the explosion-proof cavity base 1, a cable leading-in device is arranged on the left side of the explosion-proof wiring cavity 2, a programmable module group 7, an anti-surge and filtering module group 8, an intelligent network voice module unit 11, a transformer 13, a network switch 20, an intelligent key board 23 and an acousto-optic voice module unit 24 are arranged inside the explosion-proof main cavity 3, a control button 9, a function knob 10 and a display screen 19 are arranged on the front end surface of the explosion-proof main cavity 3, the control button 9 and the function knob 10 are respectively connected with the programmable module group 7 through control cables and are transmitted to the display screen 19 after being processed by the programmable module group 7, and the display screen 19 is connected, the intelligent key board 23 is connected with the display screen 19 through a USB cable, the anti-surge and filtering module group 8 is connected at the output side of the transformer 13, the programmable module group 7, the intelligent network voice module unit 11, the display screen 19 and the acousto-optic voice module unit 24 are respectively connected with the network switch 20 through network cables, and the display screen 19 is used for displaying the operation condition of equipment in real time and uploading data information through the network switch 20.

Furthermore, the intelligent network voice module unit 11, the display screen 19, the network switch 20, the intelligent key board 23 and the acousto-optic voice module unit 24 are respectively and electrically connected with the switch power supply 22 and are powered by the switch power supply 22, the programmable module group 7, the control button 9 and the function knob 10 are respectively and electrically connected with the intrinsic safety power supply 21 and are powered by the intrinsic safety power supply 21, and the anti-surge and filtering module group 8 is respectively connected with the intrinsic safety power supply 21 and the switch power supply 22.

Furthermore, the display screen 19 is provided with an RS232 interface, an RS485 interface, an ethernet interface, and a USB interface, and the programmable module group 7 is provided with an RS485 interface, an ethernet interface, a digital IO input/output point, and an analog input/output point.

Furthermore, the programmable module group 7 is provided with an ethernet module and is connected with the network switch 20 through the ethernet module, and the communication interface arranged in the flameproof main cavity 3 comprises ethernet communication, USB communication, RS485 communication, RS232 communication and CAN communication.

Furthermore, the control button 9, the function knob 10 and the display screen 19 are arranged on a door cover panel at the front end of the flameproof main cavity 3, and a glass observation window is arranged on the door cover panel.

Further, a low-voltage cover-opening locking device 14 used for detecting whether a low-voltage cover is opened or not is arranged on the explosion-proof main cavity 3, an isolating switch assembly 15 is arranged between the low-voltage cover-opening locking device 14 and the transformer 13, and electric connection is achieved through the isolating switch assembly 15.

Further, the transformer 13 is electrically connected with the intrinsic safety power supply 21 and the switching power supply 22 through the isolation switch assembly 15, the low-voltage cover opening locking device 14 and the anti-surge and filtering module group 8.

Further, a first cable lead-in device 4 and a second cable lead-in device 5 are arranged on the left side of the explosion-proof wiring cavity 2, a screw type wiring terminal 16, a nine-core wiring terminal 17 and a wall penetrating terminal 18 are arranged between the explosion-proof wiring cavity 2 and the explosion-proof main cavity 3, the transformer 13 and the first cable lead-in device 4 are electrically connected through the screw type wiring terminal 16, the second cable lead-in device 5 is electrically connected with a double-layer wiring bar 6 in the explosion-proof wiring cavity 2, a cable on the double-layer wiring bar 6 is connected to the explosion-proof main cavity 3 through the wall penetrating terminal 18, and a wiring terminal insulating baffle 12 is arranged between the screw type wiring terminal 16 and the double-.

Furthermore, the network cables of the network switch 20 are connected into the flameproof wiring cavity 2 through the nine-core wiring terminal 17, and the optical cables of the network switch 20 are connected into the flameproof wiring cavity 2 through the wall-through terminal 18.

Further, the intelligent network voice module unit 11 is connected to the acousto-optic voice module unit 24 through the network switch 20, and the acousto-optic voice module unit 24 transmits the audio signal with the external device information through the wall-through terminal 18.

Compared with the prior art, the utility model, through increasing the flame proof cavity base, shortening the width of PLC control box, reduced the volume of PLC control box, reduced the total weight of PLC control box; by adding the anti-surge and filtering module group, higher harmonics and short-time voltage impact can be effectively filtered; by adding the intelligent network voice module unit, the on-site telephone intercommunication communication between the aboveground dispatching room and the PLC control box is realized; an intelligent key board is added, so that the operation of the display screen is more convenient; the acousto-optic voice module unit is added, so that the early warning and voice broadcast signals of the programmable module group can be transmitted to peripheral equipment in time, and the operation of workers is facilitated. To sum up: the utility model discloses have convenient operation, communication interface kind many, compatible strong, the function is complete and reduce the effect of the whole width of PLC control box and volume, and gather that the signal is complete, the integrated level is high, the wiring is convenient, is worth popularizing and applying.

[ description of the drawings ]

Fig. 1 is a front view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a right side view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

in the figure: 1. the explosion-proof cavity comprises an explosion-proof cavity base 2, an explosion-proof wiring cavity 3, an explosion-proof main cavity 4, a cable leading-in device I5, a cable leading-in device II 6, a double-layer wiring bar 7, a programmable module group 8, an anti-surge and filtering module group 9, a control button 10, a function knob 11, an intelligent network voice module unit 12, a wiring terminal insulating baffle 13, a transformer 14, a low-voltage cover-opening locking device 15, an isolating switch assembly 16, a screw type wiring terminal 17, a nine-core wiring terminal 18, a wall-through terminal 19, a display screen 20, a network switch 21, an intrinsic safety power supply 22, a switching power supply 23, an intelligent key board 24 and an acousto.

[ detailed description of the invention ]

The invention is further described below with reference to the accompanying drawings:

as shown in the attached drawings, the utility model provides a novel mining flameproof and intrinsically safe PLC control box, which comprises a flameproof cavity base 1, wherein a flameproof main cavity 3 and a flameproof wiring cavity 2 positioned on the left side of the flameproof main cavity 3 are arranged on the flameproof cavity base 1, a cable leading-in device is arranged on the left side of the flameproof wiring cavity 2, a programmable module group 7, an anti-surge and filtering module group 8, an intelligent network voice module unit 11, a transformer 13, a network switch 20, an intelligent key board 23 and an acousto-optic voice module unit 24 are arranged in the flameproof main cavity 3, a control button 9, a function knob 10 and a display screen 19 are arranged on a door cover panel at the front end of the flameproof main cavity 3, a glass observation window is arranged on the door cover panel, the control button 9 and the function knob 10 are respectively connected with the programmable module group 7 through control cables and are transmitted to the display screen, the display screen 19 is connected with the control button 9 through an intelligent key board 23 to realize the functions of up, down, left, right, quitting and confirming, the intelligent key board 23 is connected with the display screen 19 through a USB cable, the anti-surge and filtering module group 8 is connected to the output side of the transformer 13 and then connected to the intrinsic safety power supply 21 and the switching power supply 22; programmable module group 7, intelligent network pronunciation modular unit 11, display screen 19, reputation pronunciation modular unit 24 are respectively through network connection switch 20, and intelligent network pronunciation modular unit 11, reputation pronunciation modular unit 24 communicate with the dispatch main shaft through network switch 20, and display screen 19 is used for real-time display equipment operating condition to upload data information through network switch 20.

The intelligent network voice module unit 11, the display screen 19, the network switch 20, the intelligent key board 23 and the acousto-optic voice module unit 24 are respectively and electrically connected with the switch power supply 22 and are powered by the switch power supply 22, and the programmable module group 7, the control button 9 and the function knob 10 are respectively and electrically connected with the intrinsic safety power supply 21 and are powered by the intrinsic safety power supply 21. The display screen 19 is provided with an RS232 interface, an RS485 interface, an Ethernet interface and a USB interface, and the programmable module group 7 is provided with an RS485 interface, an Ethernet interface, a digital input/output (IO) point and an analog input/output point; the programmable module group 7 is provided with an Ethernet module and a CPU is provided with an RS485 interface, and is connected with a network switch 20 through the Ethernet module, the display screen is provided with a communication interface, and the intelligent network voice module unit 11 and the acousto-optic voice module unit 24 are both provided with communication interfaces; all communication interfaces arranged in the flame-proof main cavity 3 specifically comprise Ethernet communication, USB communication, RS485 communication, RS232 communication and CAN communication, support various communication modes and have high practicability; the control button 9, the function knob 10 and the peripheral input signals are processed by the programmable module group 7, and then a part of the processed signals are transmitted to the peripheral control equipment, and a part of the processed signals are transmitted to the display screen 19 for the operation condition of the field equipment.

The explosion-proof main cavity 3 is provided with a low-voltage cover opening locking device 14 for detecting whether a low-voltage cover is opened or not, an isolating switch assembly 15 is arranged between the low-voltage cover opening locking device 14 and the transformer 13, and electric connection is realized through the isolating switch assembly 15, when an external panel of the explosion-proof main cavity 3 is opened, the transformer 13 stops supplying power, and the effect of improving operation safety is achieved; the transformer 13 is electrically connected with the intrinsic safety power supply 21 and the switch power supply 22 through the isolation switch assembly 15, the low-voltage cover opening locking device 14 and the anti-surge and filtering module group 8. A first cable lead-in device 4 and a second cable lead-in device 5 are arranged on the left side of the explosion-proof wiring cavity 2, a screw type wiring terminal 16, a nine-core wiring terminal 17 and a wall penetrating terminal 18 are arranged between the explosion-proof wiring cavity 2 and the explosion-proof main cavity 3, the transformer 13 and the first cable lead-in device 4 are electrically connected through the screw type wiring terminal 16, an input end cable of the transformer 13 in the explosion-proof wiring cavity 2 is connected into the explosion-proof wiring cavity 2 through the screw type wiring terminal 13 and then is connected onto an external power supply through the first cable lead-in device; the cable leading-in device II 5 is electrically connected with a double-layer wiring bar 6 in the explosion-proof wiring cavity 2, a cable on the double-layer wiring bar 6 is connected to the explosion-proof main cavity 3 through a wall-through terminal 18, a wiring terminal insulating baffle 12 is arranged between the screw type wiring terminal 16 and the double-layer wiring bar 6, and an external network cable is connected to a network switch 20 in the explosion-proof main cavity 3 through a nine-core wiring terminal 17 and an external optical cable through the wall-through terminal 18; the network cable of the network switch 20 is connected into the flameproof wiring cavity 2 through a nine-core wiring terminal 17, the optical cable of the network switch 20 is connected into the flameproof wiring cavity 2 through a wall-through terminal 18, an external signal is connected to the double-layer wiring row 6, and then the external signal is connected into the flameproof main cavity 3 through the wall-through terminal 18; the intelligent network voice module unit 11 is connected to the acousto-optic voice module unit 24 through the network switch 20, the acousto-optic voice module unit 24 transmits audio signals with external equipment information through the wall-through terminal 18, the real-time talkback function from dispatching to field equipment can be achieved, the functions of original multiple devices are integrated into a whole, and the acousto-optic voice module unit has the advantages of being high in integration level, strong in function and cost-saving.

Novel mining flame proof and essence safety type PLC control box, flame proof cavity left side on the base is flame proof wiring cavity, the right side is flame proof main cavity, flame proof wiring cavity left side sets up cable leading device, be provided with the display screen on the outside qianmen panel of flame proof main cavity, control button, function knob, the display screen is connected to intelligent keypad through the USB cable, be provided with screw binding post between flame proof wiring cavity and the flame proof main cavity, nine-core binding post, wear the wall terminal, be provided with double-deck wiring row in the flame proof wiring cavity, be provided with programmable module group in the flame proof main cavity, intelligent network voice module unit, reputation voice module unit, prevent surge and filter module group, binding post insulating barrier, transformer, network switch, this ampere of power, switching power supply, flame proof main cavity right side is provided with low pressure blocking device that uncaps, An isolation switch assembly. Therefore, the following effects are provided: the width of the PLC control box is shortened, the total weight of the PLC control box is effectively reduced, and underground installation and transportation are facilitated; the anti-surge and filtering module group has the functions of preventing short-time overvoltage and higher harmonics, so that the higher harmonics and short-time voltage impact are effectively filtered, and the stability and reliability of the voltage in the PLC control box are guaranteed; the intelligent network voice module unit is added to realize the on-site telephone intercommunication communication between the aboveground dispatching room and the PLC control box; an intelligent key board is added, so that the operation of the display screen is more convenient; and the acousto-optic voice module unit is added, so that the early warning and voice broadcast signals of the programmable module group can be transmitted to peripheral equipment in time.

The utility model discloses in, between peripheral input signal and the programmable module group, through being provided with the through-wall terminal in the flame proof wiring cavity to realize the transmission of electricity connection and low voltage signal, this through-wall terminal has the advantage of connecting reliable and stable. The transformer is electrically connected with the intrinsic safety power supply and the switch power supply through the isolation switch component, the low-voltage cover opening locking device and the surge and filtering module group, and the surge and filtering module group has the advantage of stable and reliable connection. Be provided with the low pressure blocking device that uncaps that is used for detecting whether low pressure uncaps and opens on the flame proof main cavity body, the low pressure is uncapped and is connected through being provided with isolator subassembly realization electricity between blocking device and the transformer, and when flame proof main cavity body outside panel opened, the transformer stopped the power supply to the security of flame proof equipment operation has been improved. Between transformer and the cable entry device, through being provided with screw binding post, in order to realize the electricity and connect, external signal is connected to the double-deck wiring row in the flame proof wiring cavity through the cable entry device on, the cable is connected to the flame proof main cavity body through wearing the wall terminal on the double-deck wiring row, be provided with binding post insulating barrier between screw binding post and the double-deck wiring row, external network cable is through nine core binding posts, on external optical cable is connected to the network switch in the flame proof main cavity body through wearing the wall terminal, thereby guarantee that the transmission of all kinds of signals is effectively separated mutually noninterference.

The utility model discloses in, the module group able to programme is provided with digital quantity IO input/output point, analog quantity input/output point, ethernet interface, RS485 interface, and control button, function knob and peripheral input signal transmit for the display screen for field device operating mode after the processing of module group able to programme for the PLC control box has abundant signal acquisition unit and data communication interface, has stronger compatibility and data processing function. The display screen is connected with the control buttons through the intelligent key board, so that the functions of up-down, left-right, quitting and confirming are realized. The display screen is fixed on the door closure panel of the explosion-proof main cavity body, and the door closure panel is provided with the glass observation window, so that the personnel can flexibly operate the display screen, and the personnel can understand and control the operation condition of the equipment in detail. The communication interface that this PLC control box inside contained specifically includes ethernet communication, USB communication, RS485 communication, RS232 communication, CAN communication to CAN support multiple communication mode, compatible strong, the practicality is high. The intelligent network voice module unit is connected to the acousto-optic voice module unit through the network switch, the acousto-optic voice module unit transmits audio signals with external equipment information through the wall-through terminal, real-time voice talkback can be achieved through scheduling and equipment sites, and talkback voice, early warning voice and broadcast voice can be transmitted to peripheral equipment, the functions of original multiple kinds of equipment are integrated together, and the acousto-optic voice module unit has the effects of being high in integration level, strong in function and cost saving.

To sum up: the utility model has the advantages that the width of the flame-proof main cavity body is shortened by adding the flame-proof cavity body base, the volume of the PLC control box is effectively reduced, the total weight of the PLC control box is reduced, the transportation is convenient, and the cost is reduced; then, an anti-surge and filtering module group is added, so that higher harmonics and short-time voltage impact are effectively filtered, and the weight and reliability of power supply of electronic devices in the cabinet are ensured; the intelligent network voice module unit is added to realize the on-site telephone intercommunication communication between the aboveground dispatching room and the PLC control box, and the functions of the original various devices are integrated together, so that the cost is effectively reduced, and the integration function and the automation level of the system are enhanced; the intelligent key board is added, so that the operation of the display screen is more convenient and more humanized; the acousto-optic voice module unit is added, so that the early warning and voice broadcast signals of the programmable module group can be transmitted to peripheral equipment in time, and the operation of workers is facilitated.

The present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and are all included in the protection scope of the present invention.

Claims

1. The utility model provides a novel mining flame proof and intrinsically safe PLC control box, includes flame proof cavity base (1), be provided with flame proof main cavity (3) on flame proof cavity base (1) and be located the left flame proof wiring cavity (2) of flame proof main cavity (3), flame proof wiring cavity (2) left side is provided with cable entry device, its characterized in that: the explosion-proof main cavity body (3) is internally provided with a programmable module group (7), an anti-surge and filtering module group (8), an intelligent network voice module unit (11), a transformer (13), a network switch (20), an intelligent key board (23) and an acousto-optic voice module unit (24), the front end surface of the explosion-proof main cavity body (3) is provided with a control button (9), a function knob (10) and a display screen (19), the control button (9) and the function knob (10) are respectively connected with the programmable module group (7) through control cables and are transmitted to the display screen (19) after being processed by the programmable module group (7), the display screen (19) is connected with the control button (9) through the intelligent key board (23), the intelligent key board (23) is connected with the display screen (19) through a USB cable, the anti-surge and filtering module group (8) is connected to the output side of the transformer (13), the programmable module group (7), the intelligent network voice module unit (11), the display screen (19) and the acousto-optic voice module unit (24) are respectively connected with the network switch (20) through network cables, and the display screen (19) is used for displaying the operation condition of equipment in real time and uploading data information through the network switch (20).

2. The novel mining flameproof and intrinsically safe PLC control box of claim 1, characterized in that: intelligent network pronunciation modular unit (11), display screen (19), network switch (20), intelligent keypad (23), reputation pronunciation modular unit (24) electricity connection switching power supply (22) respectively to supply power through switching power supply (22), this ampere of power supply (21) is connected respectively to programmable module group (7), control button (9), function knob (10) electricity, and supplies power through this ampere of power supply (21), prevent that surge and filtering module group (8) are connected respectively with this ampere of power supply (21), switching power supply (22).

3. The novel mining flameproof and intrinsically safe PLC control box of claim 1, characterized in that: the display screen (19) is provided with an RS232 interface, an RS485 interface, an Ethernet interface and a USB interface, and the programmable module group (7) is provided with an RS485 interface, an Ethernet interface, a digital input/output (IO) point and an analog input/output point.

4. The novel mining flameproof and intrinsically safe PLC control box of claim 1, characterized in that: the programmable module group (7) is provided with an Ethernet module and is connected with a network switch (20) through the Ethernet module, and a communication interface arranged in the flameproof main cavity body (3) comprises Ethernet communication, USB communication, RS485 communication, RS232 communication and CAN communication.

5. The novel mining flameproof and intrinsically safe PLC control box of claim 1, characterized in that: the control button (9), the function knob (10) and the display screen (19) are arranged on a door cover panel at the front end of the explosion-proof main cavity body (3), and a glass observation window is arranged on the door cover panel.

6. The novel mining flameproof and intrinsically safe PLC control box of any one of claims 1 to 5, characterized in that: the explosion-proof main cavity body (3) is provided with a low-voltage cover opening locking device (14) used for detecting whether a low-voltage cover is opened or not, an isolating switch assembly (15) is arranged between the low-voltage cover opening locking device (14) and the transformer (13), and electric connection is achieved through the isolating switch assembly (15).

7. The novel mining flameproof and intrinsically safe PLC control box of claim 6, characterized in that: the transformer (13) is electrically connected with the intrinsic safety power supply (21) and the switching power supply (22) through the isolation switch assembly (15), the low-voltage cover opening locking device (14) and the anti-surge and filtering module group (8).

8. The novel mining flameproof and intrinsically safe PLC control box of any one of claims 1 to 5, characterized in that: the explosion-proof wiring cavity (2) left side is provided with cable leading-in device (4), cable leading-in device two (5), be equipped with screw binding post (16), nine-core binding post (17), wear wall terminal (18) between explosion-proof wiring cavity (2) and explosion-proof main cavity (3), realize the electricity through screw binding post (16) between transformer (13) and the cable leading-in device (4) and be connected, cable leading-in device two (5) are connected with double-deck wiring row (6) electricity in explosion-proof wiring cavity (2), double-deck wiring row (6) are gone up the cable and are connected to explosion-proof main cavity (3) through wearing wall terminal (18), be provided with binding post insulating barrier (12) between screw binding post (16) and double-deck wiring row (6).

9. The novel mining flameproof and intrinsically safe PLC control box of claim 8, characterized in that: the network cable of the network switch (20) is connected into the flameproof wiring cavity (2) through a nine-core wiring terminal (17), and the optical cable of the network switch (20) is connected into the flameproof wiring cavity (2) through a through-wall terminal (18).

10. The novel mining flameproof and intrinsically safe PLC control box of claim 8, characterized in that: the intelligent network voice module unit (11) is connected to the acousto-optic voice module unit (24) through the network switch (20), and the acousto-optic voice module unit (24) transmits audio signals with external equipment information through the wall-through terminal (18).