CN205195795U - Mining belt conveyor voice communication system - Google Patents
Mining belt conveyor voice communication system Download PDFInfo
- Publication number
- CN205195795U CN205195795U CN201521052392.2U CN201521052392U CN205195795U CN 205195795 U CN205195795 U CN 205195795U CN 201521052392 U CN201521052392 U CN 201521052392U CN 205195795 U CN205195795 U CN 205195795U
- Authority
- CN
- China
- Prior art keywords
- demodulator
- modulator
- signal
- output part
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a mining belt conveyor voice communication system. Its purpose is in order to provide with low costs, a signal non -interfering voice communication system. The utility model discloses an at least communication line, every communication line include the control unit, communication terminal and a plurality of communication unit, supply power and provide communication channel for the control unit, communication terminal and communication unit simultaneously through the power supply link. Among the the control unit: the signal output part of first modulator respectively with the signal reception end and power supply link connection of first demodulator. In the communication unit: the signal output part of second modulator respectively with the signal reception end and power supply link connection of second demodulator, the signal output part of second demodulator holds with the signal reception of second sound reproduction circuit and is connected. Among the communication terminal: the signal output part of third modulator respectively with the signal reception end and power supply link connection of third demodulator, the signal output part of third demodulator holds with the signal reception of third sound reproduction circuit and is connected.
Description
Technical field
The utility model relates to mining communication field, particularly relates to a kind of coal mine belt conveyer speech communication system.
Background technology
Present stage, audio signal transmission mode in the speech communication system of underground coal mine is comparatively single, the wired baseband signal of many employings is transmitted, audio signal bandwidth occupancy in communication line is large, can only accomplish communication line transmission of one line audio signal simultaneously when causing audio signal to be propagated in voice band line, line efficiency is very low.Along with the development of underground coal mine integrated automation, the demand of speech communication is improved greatly, the voice signal of different geographical difference in functionality is interlaced, causes the too fat to move obstruction of underground coal mine communication line, virtually too increases difficulty and the cost of track laying simultaneously.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, cost-saving, non-interfering coal mine belt conveyer speech communication system between signal.
The utility model coal mine belt conveyer speech communication system, wherein, comprise at least one communication line, every bar communication line comprises control unit, communicating terminal and multiple communication unit, control unit comprises again power supply link, first modulator, first send sound circuit and the first demodulator, the signal receiving end and first of the first modulator send sound circuit to be connected, the signal output part of the first modulator is connected with link of powering with the signal receiving terminal of the first demodulator respectively, each communication unit comprises again the second modulator, second demodulator, second send sound circuit and the second playback circuit, the signal receiving end and second of the second modulator send sound circuit to be connected, the signal output part of the second modulator is connected with link of powering with the signal receiving terminal of the second demodulator respectively, the signal output part of the second demodulator is connected with the signal receiving end of the second playback circuit, communicating terminal comprises again the 3rd modulator, 3rd demodulator, 3rd send sound circuit and the 3rd playback circuit, the signal receiving end and the 3rd of the 3rd modulator send sound circuit to be connected, the signal output part of the 3rd modulator is connected with link of powering with the signal receiving end of the 3rd demodulator respectively, the signal output part of the 3rd demodulator is connected with the signal receiving end of the 3rd playback circuit.
The utility model coal mine belt conveyer speech communication system, wherein said coal mine belt conveyer speech communication system comprises many communication lines, is connected between adjacent two communication lines by power supply link.
The utility model coal mine belt conveyer speech communication system difference from prior art is: the utility model is at control unit, communicating terminal and communication unit are all provided with corresponding modulator and demodulator, powered by power supply link, modulator is modulated the audio signal received, different modulating according to signal becomes different frequency range, and modulation signal and the direct voltage in power supply link are carried out compound, after demodulator receives modulation signal, the required frequency range of screening carries out demodulation, and by playback circuit, the audio signal after demodulation is externally exported, only adopt a power supply link just can complete the transmission of power supply and audio signal, without the need to carrying out laying of voice band line separately, cost has greatly been saved while simplifying syndeton.Demodulator in each communication unit carries out demodulation to the modulation signal received according to required frequency range, can not produce and influence each other between each communication unit, and audio signal is separated to be play, and can not have an impact each other.
Below in conjunction with accompanying drawing, the utility model coal mine belt conveyer speech communication system is described further.
Accompanying drawing explanation
Fig. 1 is the syndeton block diagram of the utility model coal mine belt conveyer speech communication system.
Embodiment
As shown in Figure 1, be the syndeton block diagram of the utility model coal mine belt conveyer speech communication system, comprise at least one communication line, every bar communication line comprises control unit 1, communicating terminal 3 and multiple communication unit 2.Control unit 1 comprises again power supply link, the first modulator, first send sound circuit and the first demodulator, the signal receiving end and first of the first modulator send the audio output of sound circuit to be connected, and the signal output part of the first modulator is connected with link of powering with the signal receiving end of the first demodulator respectively.Each communication unit 2 comprises again the second modulator, the second demodulator, second send sound circuit and the second playback circuit, the signal receiving end and second of the second modulator send the audio output of sound circuit to be connected, the signal output part of the second modulator is connected with link of powering with the signal receiving end of the second demodulator respectively, and the signal output part of the second demodulator is connected with the signal receiving end of the second playback circuit.Communicating terminal 3 comprises again the 3rd modulator, the 3rd demodulator, the 3rd send sound circuit and the 3rd playback circuit, the signal receiving end and the 3rd of the 3rd modulator send the audio output of sound circuit to be connected, the signal output part of the 3rd modulator is connected with link of powering with the signal receiving end of the 3rd demodulator respectively, and the signal output part of the 3rd demodulator is connected with the signal receiving end of the 3rd playback circuit.Undertaken powering and communicating to connect by power supply link between adjacent two communication lines.
The power supply link adopted in the utility model is low-voltage dc power supply, according to voltage superposition principle, audio signal is compound in voltage signal, and transmits with voltage signal.
Operation principle of the present utility model is: every bar communication line all comprises control unit 1, communicating terminal 3 and communication unit 2, and need to access multiple communication unit 2 according to use, power supply and the communication of every bar communication line are mutually independent.Power supply link is respectively control unit 1, the equipment of communicating terminal 3 and communication unit 2 inside is powered, first modulator, the second modulator and the 3rd modulator receive the corresponding audio signal sending sound circuit respectively, and audio signal is become the modulation signal of the different frequency range of frequency within the scope of 87MHz-108MHz according to the different modulating of source of sound, and modulation signal and the voltage signal of power supply link are carried out compound.While power supply link carries out powering, also the modulation signal after compound can be transferred to respectively the first demodulator, the second demodulator and the 3rd demodulator, first demodulator, the second demodulator and the 3rd demodulator are according to the difference of required frequency range, modulation signal is screened, the modulation signal of required frequency range is demodulated into base-band audio signal, thus externally exports respectively by the first playback circuit, the second playback circuit and the 3rd playback circuit.According to the difference of communication unit user's request each on every bar communication line, also corresponding communication unit 2 can be set to alarm communication system unit or telephone for special use communication unit.
The utility model coal mine belt conveyer speech communication system, control unit 1, communicating terminal 3 and communication unit 2 are all provided with corresponding modulator and demodulator, powered by power supply link, modulator is modulated the audio signal received, and modulation signal and the direct voltage in power supply link are carried out compound, after demodulator receives modulation signal, the required frequency range of screening carries out demodulation, and by playback circuit, the audio signal after demodulation is externally exported, only adopt a power supply link just can complete the transmission of power supply and audio signal, without the need to carrying out laying of voice band line separately, cost has greatly been saved while simplifying syndeton.Demodulator in each communication unit 2 carries out demodulation to the modulation signal received according to required frequency range, can not produce and influence each other between each communication unit 2, and audio signal is separated to be play, and can not have an impact each other.This real new structure is simple, cost-saving, do not interfere with each other between signal, compared with prior art has obvious advantage.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (2)
1. a coal mine belt conveyer speech communication system, it is characterized in that: comprise at least one communication line, every bar communication line comprises control unit (1), communicating terminal (3) and multiple communication unit (2), control unit (1) comprises again power supply link, first modulator, first send sound circuit and the first demodulator, the signal receiving end and first of the first modulator send sound circuit to be connected, the signal output part of the first modulator is connected with link of powering with the signal receiving terminal of the first demodulator respectively, each communication unit (2) comprises again the second modulator, second demodulator, second send sound circuit and the second playback circuit, the signal receiving end and second of the second modulator send sound circuit to be connected, the signal output part of the second modulator is connected with link of powering with the signal receiving terminal of the second demodulator respectively, the signal output part of the second demodulator is connected with the signal receiving end of the second playback circuit, communicating terminal (3) comprises again the 3rd modulator, 3rd demodulator, 3rd send sound circuit and the 3rd playback circuit, the signal receiving end and the 3rd of the 3rd modulator send sound circuit to be connected, the signal output part of the 3rd modulator is connected with link of powering with the signal receiving end of the 3rd demodulator respectively, the signal output part of the 3rd demodulator is connected with the signal receiving end of the 3rd playback circuit.
2. coal mine belt conveyer speech communication system according to claim 1, is characterized in that: described coal mine belt conveyer speech communication system comprises many communication lines, is connected between adjacent two communication lines by power supply link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052392.2U CN205195795U (en) | 2015-12-16 | 2015-12-16 | Mining belt conveyor voice communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052392.2U CN205195795U (en) | 2015-12-16 | 2015-12-16 | Mining belt conveyor voice communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205195795U true CN205195795U (en) | 2016-04-27 |
Family
ID=55788733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521052392.2U Expired - Fee Related CN205195795U (en) | 2015-12-16 | 2015-12-16 | Mining belt conveyor voice communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205195795U (en) |
-
2015
- 2015-12-16 CN CN201521052392.2U patent/CN205195795U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205792848U (en) | The portable power source of band digital intercom module based on intelligent mobile terminal | |
| ATE426277T1 (en) | RADIO COMMUNICATION SYSTEM, RADIO STATION AND METHOD FOR TRANSMITTING DATA | |
| CN102832971A (en) | Synergetic networking system based on power line communication and communication method | |
| CN204068967U (en) | A kind of DC power line current carrier communication system | |
| CN205195795U (en) | Mining belt conveyor voice communication system | |
| CN107979827A (en) | A kind of D2D equipment for supporting again parasitic network and again parasitic network implementation method | |
| CN102217208A (en) | A method for transmitting signals, a combiner and a system thereof | |
| CN202261286U (en) | Self-adaptive modulator-demodulator on basis of time diversity | |
| CN105391828A (en) | Mine belt conveyor voice communication system | |
| CN202949575U (en) | Intrinsic safety type anti-explosion three-channel communication base station | |
| CN201750525U (en) | FSK numerically-controlled dual-frequency wireless microphone system | |
| CN104883331A (en) | Baseband signal processing platform based on software radio | |
| KR101043218B1 (en) | Rs 485 communication apparatus using power line having 2-line | |
| CN204349980U (en) | Spi bus data distance transmission system | |
| CN101094040B (en) | Carrier wave feedback circuit for wire broadcasting terminals in amplitude modulation format or frequency modulation format | |
| CN205320264U (en) | Bluetooth sound system | |
| CN205320352U (en) | Light operator based on power line communication | |
| CN202856694U (en) | Prime amplifier used for broadcasting system of railway station | |
| CN206790471U (en) | A kind of signal of communication transmitter | |
| CN204652389U (en) | A kind of low-consumption wireless remote-controlled doorbell repeater | |
| CN203039832U (en) | Wireless leakage communication system | |
| CN201601667U (en) | Portable scatter communication device | |
| CN202261325U (en) | Transmission protocol synchronization device based on clock drift resistance | |
| CN202178768U (en) | Scheduling broadcasting communication system for coal mine | |
| CN202696621U (en) | Radio receiving and forwarding controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161216 |