CN201450594U - Mine intrinsic safety type sound box - Google Patents
Mine intrinsic safety type sound box Download PDFInfo
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- CN201450594U CN201450594U CN200920044243XU CN200920044243U CN201450594U CN 201450594 U CN201450594 U CN 201450594U CN 200920044243X U CN200920044243X U CN 200920044243XU CN 200920044243 U CN200920044243 U CN 200920044243U CN 201450594 U CN201450594 U CN 201450594U
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Abstract
The utility model discloses a mine intrinsic safety type sound box, which uses modulation chips to modulate speech signals and control signals to different frequency bands and synthesize signals to transfer on an electric cable or an optical cable on a same medium. When using the electric cable to transfer, synthesized signals directly enter a demodulation chip, the control signals which are demodulated through the demodulation chip control a power amplifier chip to work after being treated and judged in a microprocessor, and simultaneously received control signals are output from a serial port and are converted into 485 signals to output by a signal conversion chip. Synthesized signals left audio signals through a low pass filter, a part of audio signals directly enter a power amplifier module, and a part of audio signals enter audio prolong line module to output. When the synthesized signals are transferred by the optical cable, the synthesized signals firstly enter an optical emission optical terminal, are converted into optical signals to output, and then are converted into electric signals to output through an optical receiving optical terminal on the other end. The mine intrinsic safety type sound box has the advantages that the mine intrinsic safety type sound box achieves the intrinsic safety demands of mine products, signals are little interfered, the transmission mode is flexible, the mine intrinsic safety type sound box can alodially select, and is safe, reliable and steady.
Description
Technical field
The utility model relates to a kind of audio amplifier, specifically is a kind of mine intrinsic safety type audio amplifier.Be particularly suitable for places uses such as big lane, working face, marquis's car chamber, shaft bottom under mine; Can broadcast background music in real time, news, notice can the verbal announcement personnel be withdrawn in danger, and is sent alarm sound.
Background technology
At present, known broadcasting audio amplifier series products structure is that simple power amplifier module and loud speaker are formed by connecting, audio signal is with the form input audio amplifier of the signal of telecommunication, directly by the loud speaker output sound, be subjected to external interference to influence sound quality easily, and be the ground product, can't be applied to coal mining enterprise.General audio amplifier audio signal can not be to the transmission of subordinate audio amplifier, and the startup of uncontrollable audio amplifier and stopping, and transmission mode can only be signal of telecommunication transmission, and transmission range is restricted.
Summary of the invention
The utility model provides a kind of mine intrinsic safety type audio amplifier, be used to overcome existing simple power amplifier module of audio amplifier series products and speaker combination structural model, and only can can't under coal mine, use in the ground use, and traditional ground audio amplifier transmission mode is single, only with signal of telecommunication transmission, the defective that range of application is narrow.Mine intrinsic safety type audio amplifier can be used optical signal transmission again with signal of telecommunication transmission, can withdraw the deathtrap rapidly by the verbal announcement personnel in the pit on coal mine, can assure the safety for life and property of the people.
The technical scheme that the utility model technical solution problem is adopted is: a kind of mine intrinsic safety type audio amplifier mainly comprises: voice signal and control signal are modulated into the modulating part of different frequency range, demodulation part, loud speaker, light emission optical transceiver, light-receiving optical transceiver and another light emission optical transceiver with the signal demodulation; Level transferring chip and modulation chip connect to form modulating part; Demodulation chip, microprocessor, low pass filter, power amplifier chip, audio frequency extended line, conversion of signals chip are formed the signal demodulation part, wherein demodulation chip, low pass filter and audio frequency extended line three are connected in parallel, demodulation chip is connected with microprocessor, low pass filter, power amplifier chip connect, and microprocessor also is connected with the power amplifier chip with the conversion of signals chip; Level transferring chip is 232 level conversion of control signal a Transistor-Transistor Logic level, and the Transistor-Transistor Logic level signal enters modulation chip, and output after modulating is synthetic with audio signal; Composite signal transmits on same medium; Described medium is cable or optical cable;
When adopting cable transmission, the composite signal of control signal and audio signal enters demodulation chip, low pass filter and audio frequency extended line simultaneously; Voice signal transmits to subordinate by the audio frequency extended line, and audio signal enters the power amplifier chip by low pass filter simultaneously; Through the control signal after the demodulation chip demodulation enter microprocessor through processing judge control the power amplifier chip work whether, reach the startup of control loudspeaker and stop; Control signal process microprocessor output simultaneously changes into 485 signals through the conversion of signals chip and transmits to subordinate;
When adopting the optical cable transmission, the composite signal of control signal and audio signal enters light emission optical transceiver, and the light-receiving optical transceiver is sent the synthetic signal of telecommunication into another light emission optical transceiver, transmits to subordinate through the synthetic light signal of light emission optical transceiver output then; The light-receiving optical transceiver or the synthetic signal of telecommunication of output itself deliver to, low pass filter and audio frequency extended line; Voice signal transmits to subordinate by the audio frequency extended line, and audio signal enters the power amplifier chip by low pass filter simultaneously; Through the control signal after the demodulation chip demodulation enter microprocessor through processing judge control power amplifier chip work whether, the startup of control loudspeaker and stopping; Control signal process microprocessor output simultaneously converts 485 signals to through the conversion of signals chip and transmits to subordinate.
The foregoing circuit device is in an essential safe type metal shell.
The utility model employing modulation chip is modulated into different frequency ranges to voice signal and control signal and transmits on same medium with the form of composite signal, and this medium can be that cable also can be an optical cable.When using cable transmission, composite signal directly enters demodulation chip of the present utility model, the control signal of coming out by the demodulation chip demodulation enters microprocessor, whether control power amplifier chip operation after microprocessor processes is judged, microprocessor from serial ports output entering signal conversion chip, converts the control signal that receives the output of to 485 signals then simultaneously.Composite signal is left audio signal after entering low pass filter, and a part of audio signal directly enters power amplifier module, and a part enters the output of audio frequency extended line module; When composite signal used the optical cable transmission, composite signal at first entered light emission optical transceiver, converts optical signal transmission to, and the light-receiving optical transceiver by the other end converts the signal of telecommunication to again, and later technology solves identical with above cable transmission.
The beneficial effects of the utility model are: reach the requirement of mining product intrinsic safety.When using optical signal transmission, signal is disturbed less.Signal transmission form is flexible, can independently select, and safe and reliable stable, different distance adopts the transmission means of different medium, can save cost greatly.When the down-hole is in an emergency, but the fast notification personnel in the pit withdraw, assure the safety for life and property of the people.Control signal that the utility model can be come terrestrial transmission and audio signal be again to subordinate's audio amplifier transmission, the control signal that send on ground can control well under any playscript with stage directions utility model startup and stop.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a schematic block circuit diagram of the present utility model;
Fig. 2 mine intrinsic safety type audio amplifier modulation panel circuit theory diagrams;
Fig. 3 mine intrinsic safety type audio amplifier is separated the tuned plate circuit theory diagrams.
Among the figure: I, modulating part, II, demodulation part, 1, level transferring chip, 2, modulation chip, 3, demodulation chip, 4, microprocessor, 5, low pass filter, 6, power amplifier chip, 7, loud speaker, 8, the audio frequency extended line, 9, transmitter/receiver, 10, light emission optical transceiver, 11, the light-receiving optical transceiver, 12, another light emission optical transceiver.
Embodiment
As shown in Figure 1, mine intrinsic safety type audio amplifier is made up of Max232 level transferring chip 1, XR2206 modulation chip 2, XR2211 demodulation chip 3, STC12C5410AD microprocessor 4, low pass filter 5, power amplifier chip 6, loud speaker 7, audio frequency extended line 8, SN75LBC184 conversion of signals chip 9, light emission optical transceiver 10, light-receiving optical transceiver 11 and another light emission optical transceiver 12.Max232 level transferring chip 1 is 232 level conversion of control signal a Transistor-Transistor Logic level, and the Transistor-Transistor Logic level signal enters XR2206 modulation chip 2, and output after modulating is synthetic with audio signal.
When adopting cable to be signal of telecommunication transmission, the composite signal of control signal and audio signal enters XR2211 demodulation chip 3, low pass filter 5 and audio frequency extended line 8 simultaneously; To subordinate's transmission, audio signal enters power amplifier chip 6 by low pass filter 5 to voice signal simultaneously by audio frequency extended line 8; Through the control signal after 3 demodulation of XR2211 demodulation chip enter microprocessor 4 through processing judge control power amplifier chip 6 work whether, and then reach the startup of control loudspeaker and stop.Control signal process microprocessor 4 outputs simultaneously change into 485 signals through SN75LBC184 conversion of signals chips 9 and transmit to subordinate.
When adopting optical signal transmission, the composite signal of control signal and audio signal enters light emission optical transceiver 10, the light-receiving optical transceiver 11 of demodulation part II the inside is sent the synthetic signal of telecommunication into light emission optical transceiver 12, transmits to subordinate through the synthetic light signal of another light emission optical transceiver 12 outputs then; The synthetic signal of telecommunication that light-receiving optical transceiver 11 also can be exported itself is delivered to XR2211 demodulation chip 3, low pass filter 5 and audio frequency extended line 8; To subordinate's transmission, audio signal enters power amplifier chip 6 by low pass filter 5 to voice signal simultaneously by audio frequency extended line 8; Through the control signal after 3 demodulation of XR2211 demodulation chip enter microprocessor 4 through processing judge control power amplifier chip 6 work whether, and then reach the startup of control loudspeaker and stop. 4 outputs convert 485 signals to through SN75LBC184 and transmit to subordinate control signal through microprocessor simultaneously.
As shown in Figure 2, U1 (ACT4088US-T) is the voltage transitions chip, DC12V is converted into DC5V, U2 (MAX232), is 232 level conversion of computer output Transistor-Transistor Logic level, U3 (XR2206) is a modulation chip, is used for control signal is modulated to upper frequency, and this figure output signal is the composite signal of audio signal and control signal.
As shown in Figure 3, U1 (ACT4088US-T) is the voltage transitions chip, and DC12V is converted into DC5V, U2 (STC12C5410AD) is a microprocessor, be the core devices of entire circuit, be used for handling and judge the voltage signal that collects that the work of controlling lead acid accumulator then whether.U3 (SN75LBC184) is the chip that Transistor-Transistor Logic level signal and 485 signals are changed mutually, is used for control signal that microprocessor is sent to send with the form of 485 signals.U4 (XR2211) is a demodulation chip, is used for the analog high frequency that is modulated into is converted into the TTLI level signal.U5 (YD1519B) is the power amplifier chip, and (LS1) provides high-power output for loud speaker.
The foregoing circuit device is in an essential safe type stainless steel metal housing.
Claims (5)
1. mine intrinsic safety type audio amplifier, it is characterized in that, mainly comprise: with voice signal and control signal be modulated into the modulating part (I) of different frequency range, demodulation part (II), loud speaker (7), light emission optical transceiver (10), light-receiving optical transceiver (11) and another light with the signal demodulation is launched optical transceiver (12); Level transferring chip (1) and modulation chip (2) connect to form modulating part (I); Demodulation chip (3), microprocessor (4), low pass filter (5), power amplifier chip (6), audio frequency extended line (8), conversion of signals chip (9) are formed signal demodulation part (II), wherein demodulation chip (3), low pass filter (5) and audio frequency extended line (8) three are connected in parallel, demodulation chip (3) is connected with microprocessor (4), low pass filter (5), power amplifier chip (6) connect, and microprocessor (4) also is connected with power amplifier chip (6) with conversion of signals chip (9); Level transferring chip (1) is 232 level conversion of control signal a Transistor-Transistor Logic level, and the Transistor-Transistor Logic level signal enters modulation chip (2), output after modulating, and synthetic with audio signal, composite signal transmits on same medium; Described medium is cable or optical cable;
When adopting cable transmission, the composite signal of control signal and audio signal enters demodulation chip XR2211 (3), low pass filter (5) and audio frequency extended line (8) simultaneously; To subordinate's transmission, audio signal enters power amplifier chip (6) by low pass filter (5) to voice signal simultaneously by audio frequency extended line (8); Through the control signal after demodulation chip (3) demodulation enter microprocessor (4) through processing judge control power amplifier chip (6) work whether, reach the startup of control loudspeaker and stop; Control signal process microprocessor (4) output simultaneously changes into 485 signals through conversion of signals chip (9) and transmits to subordinate;
When adopting the optical cable transmission, the composite signal of control signal and audio signal enters light emission optical transceiver (10), light-receiving optical transceiver (11) is sent the synthetic signal of telecommunication into another light emission optical transceiver (12), transmits to subordinate through the synthetic light signal of light emission optical transceiver (12) output then; The synthetic signal of telecommunication that light-receiving optical transceiver (11) also can be exported itself is delivered to demodulation chip (3), low pass filter (5) and audio frequency extended line (8); To subordinate's transmission, audio signal enters power amplifier chip (6) by low pass filter (5) to voice signal simultaneously by audio frequency extended line (8); Through the control signal after demodulation chip (3) demodulation enter microprocessor (4) through processing judge control power amplifier chip (6) work whether, the startup of control loudspeaker and stopping; Control signal process microprocessor (4) output simultaneously converts 485 signals to through conversion of signals chip (9) and transmits to subordinate;
The foregoing circuit device is in the essential safe type metal shell.
2. mine intrinsic safety type audio amplifier according to claim 1 is characterized in that, level transferring chip (1) adopts the Max232 chip.
3. mine intrinsic safety type audio amplifier according to claim 1 is characterized in that, modulation chip (2) adopts the XR2206 chip.
4. mine intrinsic safety type audio amplifier according to claim 1 is characterized in that, demodulation chip adopts the XR2211 chip.
5. mine intrinsic safety type audio amplifier according to claim 1 is characterized in that, the conversion of signals chip adopts the SN75LBC184 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920044243XU CN201450594U (en) | 2009-06-05 | 2009-06-05 | Mine intrinsic safety type sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920044243XU CN201450594U (en) | 2009-06-05 | 2009-06-05 | Mine intrinsic safety type sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450594U true CN201450594U (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920044243XU Expired - Fee Related CN201450594U (en) | 2009-06-05 | 2009-06-05 | Mine intrinsic safety type sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104202107A (en) * | 2014-09-16 | 2014-12-10 | 合肥协知行信息系统工程有限公司 | Mine emergency broadcasting system |
| CN104104338B (en) * | 2014-07-18 | 2017-02-01 | 天地（常州）自动化股份有限公司 | Mine intrinsic safety type audio power amplifier module |
-
2009
- 2009-06-05 CN CN200920044243XU patent/CN201450594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104338B (en) * | 2014-07-18 | 2017-02-01 | 天地（常州）自动化股份有限公司 | Mine intrinsic safety type audio power amplifier module |
| CN104202107A (en) * | 2014-09-16 | 2014-12-10 | 合肥协知行信息系统工程有限公司 | Mine emergency broadcasting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20140605 |