阅读说明：本技术 一种矿用通信控制系统的多媒体终端及矿用通信控制系统 (Multimedia terminal of mining communication control system and mining communication control system ) 是由 刘同宝 徐春颖 舒正义 门雪松 胡耀鹏 满俊材 夏增极 宋志勇 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种矿用通信控制系统的多媒体终端及矿用通信控制系统,具有音视频通话、网络数据交换、CAN/485本非转换等功能；该多媒体终端包括本安箱体和隔爆箱体,所述隔爆箱体内设置有电源模块、信号隔离转换模块和SIP通话模块,所述电源模块用于给信号隔离转换模块和SIP通话模块供电,所述信号隔离转换模块实现非安CAN信号与本安CAN信号、非安485信号与本安485信号之间的双向透传以及CAN与485信号之间的协议转换,所述SIP通话模块实现音视频通话和网络数据交换。(The invention discloses a multimedia terminal of a mining communication control system and the mining communication control system, which have the functions of audio and video communication, network data exchange, CAN/485 bus non-conversion and the like; this multimedia terminal includes this ampere of box and explosion-proof box, be provided with power module, signal isolation conversion module and SIP conversation module in the explosion-proof box, power module is used for keeping apart conversion module and SIP conversation module power supply for the signal, signal isolation conversion module realizes two-way passthrough between ann's CAN signal and this ampere of CAN signal, ann's 485 signal and the protocol conversion between CAN and 485 signal, SIP conversation module realizes audio and video conversation and network data exchange.)

1. The utility model provides a mining communication control system's multimedia terminal, characterized by, includes intrinsically safe box and explosion-proof box, be provided with power module, signal isolation conversion module and SIP conversation module in the explosion-proof box, power module is used for keeping apart conversion module and SIP conversation module power supply for the signal, signal isolation conversion module realizes two-way passthrough between ann's CAN signal and ann's CAN signal, ann's 485 signal and the protocol conversion between CAN and the 485 signal that the SIP conversation module realizes audio and video conversation and network data exchange.

2. The multimedia terminal of the mining communication control system according to claim 1, wherein a liquid crystal screen, a liquid crystal touch panel, a camera and a microphone are arranged on the cover body on the front side of the explosion-proof box body, and a loudspeaker is arranged on the cover body on the front side of the intrinsically safe box body; the liquid crystal screen, the liquid crystal touch pad, the camera, the microphone and the loudspeaker are respectively connected with the SIP call module.

3. The multimedia terminal of the mining communication control system according to claim 1, wherein the power module comprises an EMC protection device, an AC/DC converter, an intrinsically safe voltage stabilizing circuit, a double overcurrent and overvoltage protection circuit, a non-intrinsically safe voltage stabilizing circuit, a battery management circuit and a battery, alternating current enters the AC/DC converter through the EMC protection device, the AC/DC converter converts the alternating current into direct current for output, the direct current voltage outputs intrinsically safe 12V after passing through the intrinsically safe voltage stabilizing circuit and the double overcurrent and overvoltage protection circuit, the direct current voltage outputs non-intrinsically safe 12V after passing through the non-intrinsically safe voltage stabilizing circuit, and the direct current voltage controls charging and discharging of the battery after passing through the battery management circuit.

4. The multimedia terminal of the mining communication control system according to claim 1, wherein the SIP call module comprises an SIP module, a photoelectric switch and a power amplifier module, the SIP module is connected with the power amplifier module, a microphone, a liquid crystal screen, a liquid crystal touch panel and a camera to realize audio and video calls, and the photoelectric switch is connected with the SIP module to realize network data exchange.

5. The multimedia terminal of the mining communication control system according to claim 4, wherein the optoelectronic switch comprises a switch chip and a plurality of RJ45 network ports and optical ports connected with the switch chip.

6. The multimedia terminal of the mining communication control system according to claim 4, wherein isolation devices are respectively connected between the power amplifier module and the SIP module, and between the microphone and the SIP module.

7. The multimedia terminal of the mining communication control system according to claim 1, wherein the signal isolation conversion module comprises a CAN local non-isolation circuit, a 485 local non-isolation circuit and a CAN/485 local non-conversion circuit;

the CAN local non-isolation circuit is used for realizing bidirectional transparent transmission between a non-safety CAN signal and an intrinsic safety CAN signal;

the 485 non-isolation circuit is used for realizing bidirectional transparent transmission between the non-safety 485 signal and the intrinsic safety 485 signal;

the CAN/485 non-conversion circuit is used for realizing protocol conversion between CAN and 485 signals.

8. The multimedia terminal of the mining communication control system according to claim 1, wherein the CAN local non-isolated circuit comprises two CAN driving chips, a signal isolation chip and a data forwarding module; one CAN driving chip receives an unsafe CAN signal and sends the unsafe CAN signal to the data forwarding module, the data forwarding module reads the unsafe CAN signal and converts the unsafe CAN signal into an intrinsic safety CAN signal, and the intrinsic safety CAN signal is isolated by the CAN signal isolation chip and then output by the other CAN driving chip;

the 485 non-isolation circuit comprises two 485 driving chips and a receiving and transmitting control module; one 485 driver chip receives the non-safety 485 signal and sends the non-safety 485 signal to the receiving and sending control module, the receiving and sending control module reads the non-safety 485 signal and converts the non-safety 485 signal into an intrinsic safety 485 signal, and the intrinsic safety 485 signal is isolated by the other 485 driver chip and then output.

9. The multimedia terminal of the mining communication control system according to claim 1, wherein the CAN/485 local non-conversion circuit comprises a CAN driving chip, a 485 driving chip, a signal isolation circuit and a data forwarding module, the CAN driving chip receives the non-safety CAN signal and sends the non-safety CAN signal to the data forwarding module, the data forwarding module analyzes the non-safety CAN signal and converts the non-safety CAN signal into an intrinsically-safe 485 signal, and the intrinsically-safe 485 signal is isolated by the signal isolation circuit and then output by the 485 driving chip.

10. A mining communication control system, characterised by comprising a multimedia terminal according to any of claims 1 to 9.

Technical Field

The invention relates to the technical field of mining communication, in particular to a multimedia terminal of a mining communication control system and the mining communication control system.

Background

The multimedia terminal is an audio conversion device applied to a coal mine communication control system, realizes conversion between digital audio and analog audio of an SIP protocol, and can realize functions of video call, calling and the like. Through the multimedia terminal, audio signals of KTC118, KTC2 and broadcast can be intercommunicated, and the voice of a wireless communication system with a downhole WIFI system and a 3G system can be realized, and a video call function is supported.

The inventor finds that the existing multimedia terminal cannot meet the requirement of checking the actual field conditions of both parties of a call in real time among all working points under the current coal mine in the research and development process.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the multimedia terminal of the mining communication control system and the mining communication control system, which have the functions of audio and video communication, network data exchange, CAN/485 non-conversion and the like, realize that any two devices CAN directly dial numbers for communication, simultaneously CAN check the actual situation of the site of the other party in real time, and CAN shoot a communication picture for storage.

The technical scheme of the multimedia terminal of the mining communication control system provided by the invention is as follows:

the utility model provides a mining communication control system's multimedia terminal, includes this ampere of box and explosion-proof box, be provided with power module, signal isolation conversion module and SIP conversation module in the explosion-proof box, power module is used for keeping apart conversion module and SIP conversation module power supply for the signal, signal isolation conversion module realizes two-way passthrough between ann CAN signal and this ampere of CAN signal, ann 485 signal and this ampere of 485 signal and the protocol conversion between CAN and 485 signal, SIP conversation module realizes audio and video conversation and network data exchange.

Furthermore, a liquid crystal screen, a liquid crystal touch pad, a camera and a microphone are arranged on the cover body on the front side of the explosion-proof box body, and a loudspeaker is arranged on the cover body on the front side of the intrinsically safe box body; the liquid crystal screen, the liquid crystal touch pad, the camera, the microphone and the loudspeaker are respectively connected with the SIP call module.

Furthermore, the power module comprises an EMC protection device, an AC/DC converter, an intrinsically safe voltage stabilizing circuit, a double overcurrent and overvoltage protection circuit, a non-intrinsically safe voltage stabilizing circuit, a battery management circuit and a battery, alternating current enters the AC/DC converter through the EMC protection device, the AC/DC converter converts the alternating current into direct current for output, the direct current voltage outputs intrinsically safe 12V after passing through the intrinsically safe voltage stabilizing circuit and the double overcurrent and overvoltage protection circuit, the direct current voltage outputs non-intrinsically safe 12V after passing through the non-intrinsically safe voltage stabilizing circuit, and the direct current voltage controls the charging and discharging of the battery after passing through the battery management circuit.

Further, SIP conversation module includes SIP module, photoelectric switch and power amplifier module, microphone, LCD screen, liquid crystal touch pad and camera are connected to the SIP module, realize the audio and video conversation, the SIP module is connected to the photoelectric switch, realizes network data exchange.

Further, the optoelectronic switch includes a switch chip and a plurality of RJ45 network ports and optical ports connected to the switch chip.

Furthermore, isolation devices are respectively connected between the power amplifier module and the SIP module and between the microphone and the SIP module.

Furthermore, the signal isolation conversion module comprises a CAN non-isolation circuit, a 485 non-isolation circuit and a CAN/485 non-conversion circuit;

the CAN local non-isolation circuit is used for realizing bidirectional transparent transmission between a non-safety CAN signal and an intrinsic safety CAN signal;

the 485 non-isolation circuit is used for realizing bidirectional transparent transmission between the non-safety 485 signal and the intrinsic safety 485 signal;

the CAN/485 non-conversion circuit is used for realizing protocol conversion between CAN and 485 signals.

Furthermore, the CAN local non-isolated circuit comprises two CAN driving chips, a signal isolation chip and a data forwarding module; one CAN driving chip receives an unsafe CAN signal and sends the unsafe CAN signal to the data forwarding module, the data forwarding module reads the unsafe CAN signal and converts the unsafe CAN signal into an intrinsic safety CAN signal, and the intrinsic safety CAN signal is isolated by the CAN signal isolation chip and then output by the other CAN driving chip;

the 485 non-isolation circuit comprises two 485 driving chips and a receiving and transmitting control module; one 485 driver chip receives the non-safety 485 signal and sends the non-safety 485 signal to the receiving and sending control module, the receiving and sending control module reads the non-safety 485 signal and converts the non-safety 485 signal into an intrinsic safety 485 signal, and the intrinsic safety 485 signal is isolated by the other 485 driver chip and then output.

Furthermore, the CAN/485 local non-conversion circuit comprises a CAN driving chip, a 485 driving chip, a signal isolation circuit and a data forwarding module, wherein the CAN driving chip receives a non-safety CAN signal and sends the non-safety CAN signal to the data forwarding module, the data forwarding module analyzes the non-safety CAN signal and converts the non-safety CAN signal into a local safety 485 signal, and the local safety 485 signal is isolated by the signal isolation circuit and then output by the 485 driving chip.

The technical scheme of the mining communication control system provided by the invention on the other hand is as follows:

a mining communication control system comprises the multimedia terminal.

Through the technical scheme, the invention has the beneficial effects that:

(1) the multimedia terminal related by the invention can realize the functions of dialing SIP phone, video call and the like through the explosion-proof touch screen and the call microphone;

(2) the multimedia terminal related by the invention can dial other IP devices in the same network through the touch screen, and after the opposite side is connected, the half-duplex conversation with the opposite side is realized through the microphone adapter; if the dialed opposite side is a multimedia terminal, the equipment can also realize video call with the opposite side through a camera of the equipment, the image display is full duplex during the video call, and the voice is in a half duplex mode;

(3) the multimedia terminal related to the invention has the function of network data exchange, can realize the data exchange among different network interfaces, the said network interface includes hundred million RJ45 electric ports, hundred million SC optical interface, giga RJ45 electric ports, giga SFP optical port;

(4) the multimedia terminal has the intrinsic safety/non-safety isolation and transparent transmission functions of CAN and 485 signals, CAN convert the intrinsic safety signals into non-safety signals or convert the non-safety signals into the intrinsic safety signals, is applied to data transfer between devices in different explosion-proof modes, and also has the function of mutual conversion of the CAN and 485 signals.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the application and not to limit the invention.

FIG. 1 is a schematic diagram of an overall structure of a multimedia terminal according to an embodiment;

FIG. 2 is a block diagram illustrating an internal structure of a multimedia terminal according to an embodiment;

FIG. 3 is a functional block diagram of a SIP module of an embodiment;

FIG. 4 is a block diagram of an optoelectronic switch according to an embodiment;

FIG. 5 is a block diagram of a CAN non-isolated circuit according to an embodiment;

FIG. 6 is a block diagram of a 485 non-isolated circuit according to an embodiment;

FIG. 7 is a block diagram of a CAN/485 non-conversion circuit according to an embodiment;

FIG. 8 is a block diagram of a power panel according to an embodiment.

Detailed Description

The invention is further described with reference to the following figures and examples.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.