Intrinsically safe network voice controller for mining

A network voice and controller technology, applied in voice analysis, voice synthesis, instruments, etc., can solve the problems that broadcasting cannot meet the needs of coal mine underground broadcasting, high distortion, limited power expansion capacity, etc., and achieve rich sound source types, Reduce line consumption and good general performance

Active Publication Date: 2012-07-18
济南易安行信息科技有限公司
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Problems solved by technology

[0003] At present, traditional broadcasting cannot meet the needs of underground broadcasting in coal mines
The traditional ①constant voltage transmission is affected by factors such as the bandwidth of the transformer between the lines, the size of the speaker, and the diameter of the cable. Only one set of programs can be transmitted, unable to satisfy simultaneous broadcasting and regional broadcasting, and unable to realize point-to-p

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  • Intrinsically safe network voice controller for mining
  • Intrinsically safe network voice controller for mining
  • Intrinsically safe network voice controller for mining

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Embodiment Construction

[0052] The present invention will be further elaborated below through specific examples. It should be noted that the following descriptions are only for explaining the present invention, and do not limit its content.

[0053] see figure 1 Schematic diagram of the structure and figure 2 The schematic diagram of the modules in the control box, an intrinsically safe network voice controller for mining, consists of power supply circuit 7, network processing circuit 2, SD card circuit 3, CPU circuit 1, codec circuit Ⅰ4, codec circuit Ⅱ5, audio drive Circuit 6, 4-way audio interface 8, cascade device power interface 9, etc. image 3 is the circuit diagram of the network processing circuit; Figure 4 is the circuit diagram of the SD card circuit; Figure 5 is the circuit diagram of the power circuit; Image 6 is the circuit diagram of the codec circuit; Figure 7 Is the circuit diagram of the CPU circuit.

[0054] The CPU circuit 1 is connected to the network processing circui...

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Abstract

The invention discloses an intrinsically safe network voice controller for mining, comprising a CPU (central processing unit) circuit, wherein the CPU circuit is respectively connected with a network processing circuit, an SD (Secure Digital Memory) card circuit, two paths of audio coding and decoding circuits, an audio drive circuit and a power supply circuit for supplying power, the two paths of audio coding and decoding circuits are connected with at least one path of audio interfaces through the audio drive circuit, and the SD card circuit is directly connected with the audio coding and decoding circuits. The intrinsically safe network voice controller for mining, disclosed by the invention, is a part of underground digital broadcast of a coal mine, the digital broadcast is transmitted by a network, so that the signal to noise ratio is high, the transmission distance is far, and the digital broadcast has an advantage incomparable to that of the traditional constant pressure broadcast method. The intrinsically safe network voice controller for mining is suitable for such occasions as an underground sidewalk of mine, a parking place and a rest room, etc.

Description

[0001] technical field [0002] The invention relates to a mine-used intrinsically safe network voice controller. Background technique [0003] At present, traditional broadcasting cannot meet the needs of underground broadcasting in coal mines. The traditional ①constant voltage transmission is affected by factors such as the bandwidth of the transformer between the lines, the size of the speaker, and the diameter of the cable. Only one set of programs can be transmitted, which cannot satisfy simultaneous broadcasting and regional broadcasting, and cannot realize point-to-point addressing broadcasting. ③The sound source is basically an analog sound source, which cannot play digital format audio files, and cannot realize automatic playback and automatic control. Constant-voltage broadcasting is designed according to the principles of power matching and impedance matching. Once the system wiring is installed, the capacity for power expansion is very limited, and the program ...

Claims

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Application Information

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IPC IPC(8): G11B19/02H04R27/00G10L19/00G10L13/033
Inventor 付茂勇林宪旗张二伟郭少丰
Owner 济南易安行信息科技有限公司
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