CN201797543U - Digital mining amplified telephone terminal - Google Patents
Digital mining amplified telephone terminal Download PDFInfo
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- CN201797543U CN201797543U CN2010205395870U CN201020539587U CN201797543U CN 201797543 U CN201797543 U CN 201797543U CN 2010205395870 U CN2010205395870 U CN 2010205395870U CN 201020539587 U CN201020539587 U CN 201020539587U CN 201797543 U CN201797543 U CN 201797543U
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Abstract
The invention discloses a digital mining amplified telephone terminal, which relates to the technical field of mining communication equipment. The digital mining amplified telephone terminal consists of an RS485 serial interface circuit A1, a central processing unit (CPU) processing module A2, an encoding and decoding module A3 of a voice digital signal, an analogue to digital (A/D) and digital to analogue (D/A) conversion module A4 of a voice signal and a voice output circuit A5, wherein the CPU processing module A2 is connected with the RS485 serial interface circuit A1; the encoding and decoding module A3 of the voice digital signal is connected with the CPU processing module A2; the A/D and D/A conversion module A4 of the voice signal is connected with the CPU processing module A2; and the voice output circuit A5 is connected with the A/D and D/A conversion module A4 of the voice signal. The digital mining amplified telephone terminal has the advantages that: the terminal has high tone quality and high anti-interference performance; and underground cable arrangement is saved based on aboveground to underground transmission and necessary safeguards are provided for reducing safety accidents, reducing loss of life and personal injury and enhancing the scientificity and effectiveness of post-disaster emergency rescue.
Description
Technical field
The utility model relates to mining communication apparatus technical field, specifically is a kind of mining numeric type hands free telephone terminal; It broadcasts communication and signal communication means for the mine intrinsic safety type expands, and is not only applicable to have under the coal mine environment of gas, coal dust explosion hazard, also is suitable for using in the industry ground adverse circumstances such as coal, metallurgy, chemical industry, building materials, traffic, electric power, grain.
Background technology
It is very important to expand the effect of telephone call screener in colliery automated systems such as the control of belt collection, water pump automation, but present existing expansion telephone call screener system is relatively independent, establishes one's own system, and need lay cable separately when conversing with the ground control centre.Analog communication system is still adopted in tradition mine voice communication, but analog signal is in transmission course and noise superimposed is very difficult separates, and noise can be transmitted, amplify, have a strong impact on communication quality along with signal.Along with digital technology and development of internet technology, Industrial Ethernet has obtained application more and more widely in the communications monitor system of colliery.But present hands free telephone terminal can not incorporate industrial ethernet ring network to voice communication, more can not realize ip voice communication.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the utility model provides a kind of mining numeric type hands free telephone terminal; This hands free telephone terminal is that pure digi-tal expands broadcast system, tonequality is good, strong interference immunity, not only have the amplifying of traditional expansion telephone call screener system, intercommunication, function such as get ready, also possess report background music, with expanded function such as ground maneuvers platform intercommunication, can directly include industrial Ethernet ring network system in, not need to lay separately cable.
The utility model is realized with following technical scheme: a kind of mining numeric type hands free telephone terminal, comprise RS485 serial interface circuit A1, the CPU processing module A2 that is connected with RS485 serial interface circuit A1, the coding/decoding module A3 of the voice digital signal that is connected with CPU processing module A2, the A/D of the voice signal that is connected with CPU processing module A2, D/A modular converter A4; With the A/D of voice signal, the voice output circuit A5 that D/A modular converter A4 is connected; Foregoing circuit is the essential safe type circuit, is installed in the airtight housing.
Operation principle: the audio digital signals that expands the conversion port of telephone call screener from IP is sent into CPU processing module A2 by RS485 serial interface circuit A1 and is handled, the coding/decoding module A3 that speech data after the processing is sent into voice digital signal carries out decompress(ion) and decoding to it, speech data after the compression carries out A/D by A/D, the D/A modular converter A4 of voice signal, and the analog signal that obtains is by voice output circuit A5 output.People from down-hole analog voice signal is by the A/D of voice signal, the PCM signal that D/A modular converter A4 obtains, the PCM signal carries out compressed encoding by the coding/decoding module A3 of voice digital signal again, compression back data are exported to CPU processing module A2, and the data of CPU processing module A2 after to coding are handled and packed and be transferred to the conversion port that IP expands telephone call screener by RS485 serial interface circuit A1.
The utility model has the advantages that: tonequality is good, strong interference immunity; Both can be connected, also can be connected with the dispatch command telephone exchange with the plain old telephone switch; Can realize the function of background music broadcast, contact signal remote control and scram button more easily.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model theory diagram;
Fig. 2 is the utility model A1 module circuit diagram;
Fig. 3 is the utility model A2 module circuit diagram;
Fig. 4 is the utility model A3 module circuit diagram;
Fig. 5 is the utility model A4 module circuit diagram;
Fig. 6 is the utility model A5 module circuit diagram.
RS485 serial interface circuit A1: be mainly used in the conversion port that connects IP expansion telephone call screener;
CPU processing module A2: except all required sequential of system are provided, the data that IP is expanded the conversion port of telephone call screener are unpacked and are extracted speech data and send into A3 it is carried out decompress(ion) and decoding, also the data behind the coding are handled and packed being transferred to the conversion port that IP expands telephone call screener;
The coding/decoding module A3 of voice digital signal: be mainly used in the speech data that A2 is received and carry out decompress(ion) and decoding or the PCM signal that A4 obtains is carried out compressed encoding;
The A/D of voice signal, D/A modular converter A4: the modulus, the digital-to-analogue conversion that are mainly used in voice signal;
Voice signal output module A5: the simulation output that is mainly used in voice signal.
Embodiment
As shown in Figure 1, mining numeric type hands free telephone terminal has a RS485 serial interface circuit A1 who is connected with IP expansion telephone call screener conversion port; The CPU processing module A2 that is connected with RS485 serial interface circuit A1; The coding/decoding module A3 of the voice digital signal that is connected with CPU processing module A2; The A/D of the voice signal that is connected with CPU processing module A2, D/A modular converter A4; Form with the A/D of voice signal, five parts of voice output circuit A5 that D/A modular converter A4 is connected.
As Fig. 2～shown in Figure 6, RS485 serial port circuit A1 mainly is made up of opto-coupler chip 6N137, HCPL-2630, house dog and reset special chip MAX813L and transceiver MAX1487; 3 pin of opto-coupler chip 6N137 are connected with 1 pin of transceiver MAX1487,3,4 pin of transceiver MAX1487 are connected with 7,6 pin of opto-coupler chip HCPL-2630 respectively, and 2 pin of opto-coupler chip HCPL-2630 are connected with 8 pin of the house dog and the special chip MAX813L that resets; CPU processing module A2 adopts fpga chip EP2C8Q208C8; Coding/decoding module A3 adopts WMA audio decoder chip VS1003B; The A/D of voice signal, D/A modular converter A4 adopt PCM chip of speech decoder MC14LC5480; Voice output circuit A5 adopts power amplifier TDA2822M.
RXD end (6 pin of opto-coupler chip 6N137) among the RS485 serial port circuit A1, TXD holds (3 pin among the opto-coupler chip HCPL-2630), RTC end (3 pin among the opto-coupler chip HCPL-2630) is connected with 199,198,197 pin of fpga chip EP2C8Q208C8 respectively, finishes the transmitting-receiving of data; 12,13,14,15 pin of fpga chip EP2C8Q208C8 are connected with MISO, MOSI, XCS, XDCS pin among the WMA audio decoder chip VS1003B respectively; 33 pin among the fpga chip EP2C8Q208C8,5 pin, 4 pin, 34 pin, 35 pin, 37 pin, 39 pin are connected with FST end, DT end, BCKT end, MCLK end, FSR end, DR end, the BCKR end of PCM chip of speech decoder MC14LC5480 respectively, finish the coding and decoding of voice; 4,17 pin of PCM chip of speech decoder MC14LC5480 connect respectively at 7,8 pin of power amplifier TDA2822M; 1,3 pin of power amplifier TDA2822M connect loud speaker.
Expand audio digital signals the unpacking and extract speech data and it is carried out decompress(ion) and decoding sending into WMA audio decoder chip VS1003B of the conversion port of telephone call screener by fpga chip EP2C8Q208C8 from IP, decompress(ion) and decoded speech data carry out the D/A conversion by PCM chip of speech decoder MC14LC5480 chip and are reduced into voice analog signal, and voice analog signal is exported through power amplifier TDA2822M.Opposite people from down-hole analog voice signal at first carries out the PCM signal that A/D is converted to via PCM chip of speech decoder MC14LC5480 chip, carry out compressed encoding by WMA audio decoder chip VS1003B again, compression back data are exported to fpga chip EP2C8Q208C8; The microprocessor of fpga chip EP2C8Q208C8 also handles and packs being transferred to the conversion port that IP expands telephone call screener to the data behind the coding except all required sequential of system are provided.
The course of work: the ground maneuvers platform is broadcasted (background music is play, broadcasts, got ready making peace) by this device to all expansion telephone call screeners in down-hole, perhaps can expand telephone call screeners to a few groups by certain several key and broadcast.If this moment, the people of down-hole will converse with the people on ground, just can realize intercommunication function by the outside line button, phone is connected the ground maneuvers platform that presets automatically by pressing the outside line button, and the other side can carry out intercommunication after pressing dialog buttons.Numeric type hands free telephone terminal that this is mining adopts quad UNICOM (containing charging), can form independently to expand completely and broadcast communication, intercommunication and sending dotter signal contacted system; Can include industrial Ethernet ring network system in.Its inner dress boosting battery group, externally fed interrupts temporarily, and it is unaffected to communicate by letter.
Claims (6)
1. mining numeric type hands free telephone terminal, it is characterized in that: comprise RS485 serial interface circuit A1, the CPU processing module A2 that is connected with RS485 serial interface circuit A1, the coding/decoding module A3 of the voice digital signal that is connected with CPU processing module A2, the A/D of the voice signal that is connected with CPU processing module A2, D/A modular converter A4; With the A/D of voice signal, the voice output circuit A5 that D/A modular converter A4 is connected; Foregoing circuit is installed in the airtight housing.
2. mining numeric type hands free telephone terminal according to claim 1 is characterized in that: described RS485 serial port circuit A1 mainly is made up of opto-coupler chip 6N137, HCPL-2630, house dog and reset special chip MAX813L and transceiver MAX1487; 3 pin of opto-coupler chip 6N137 are connected with 1 pin of transceiver MAX1487,3,4 pin of transceiver MAX1487 are connected with 7,6 pin of opto-coupler chip HCPL-2630 respectively, and 2 pin of opto-coupler chip HCPL-2630 are connected with 8 pin of the house dog and the special chip MAX813L that resets.
3. mining numeric type hands free telephone terminal according to claim 1 is characterized in that: described CPU processing module A2 adopts fpga chip EP2C8Q208C8.
4. mining numeric type hands free telephone terminal according to claim 1 is characterized in that: described coding/decoding module A3 adopts WMA audio decoder chip VS1003B.
5. mining numeric type hands free telephone terminal according to claim 1 is characterized in that: the A/D of described voice signal, D/A modular converter A4 adopt PCM chip of speech decoder MC14LC5480.
6. mining numeric type hands free telephone terminal according to claim 1 is characterized in that: described voice output circuit A5 adopts power amplifier TDA2822M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205395870U CN201797543U (en) | 2010-09-17 | 2010-09-17 | Digital mining amplified telephone terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205395870U CN201797543U (en) | 2010-09-17 | 2010-09-17 | Digital mining amplified telephone terminal |
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| Publication Number | Publication Date |
|---|---|
| CN201797543U true CN201797543U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205395870U Expired - Fee Related CN201797543U (en) | 2010-09-17 | 2010-09-17 | Digital mining amplified telephone terminal |
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| CN (1) | CN201797543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412731A (en) * | 2018-12-12 | 2019-03-01 | 天津华宁电子有限公司 | Mining voice couples emergent broadcast terminal installation |
-
2010
- 2010-09-17 CN CN2010205395870U patent/CN201797543U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412731A (en) * | 2018-12-12 | 2019-03-01 | 天津华宁电子有限公司 | Mining voice couples emergent broadcast terminal installation |
| CN109412731B (en) * | 2018-12-12 | 2024-04-30 | 天津华宁电子有限公司 | Mining voice coupling emergency broadcasting terminal device |
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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 |
Granted publication date: 20110413 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |