CN202340252U - Communication cell phone with functions of eliminating echoes and noise for mining - Google Patents
Communication cell phone with functions of eliminating echoes and noise for mining Download PDFInfo
- Publication number
- CN202340252U CN202340252U CN2011204611754U CN201120461175U CN202340252U CN 202340252 U CN202340252 U CN 202340252U CN 2011204611754 U CN2011204611754 U CN 2011204611754U CN 201120461175 U CN201120461175 U CN 201120461175U CN 202340252 U CN202340252 U CN 202340252U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- central control
- power management
- noise
- 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 - Lifetime
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The utility model relates to wireless communication devices and aims at providing a communication cell phone with functions of eliminating echoes and noise for mining. A power supply management module in the cell phone is connected with a central control module, the central control module is respectively connected with a wireless communication module, a voice processing module and a man-machine interaction module, the wireless communication module is connected with an antenna, and the voice processing module is connected with microphones and a loudspeaker. The voice processing module further comprises a voice coding and decoding circuit, an echo and noise eliminating circuit, an audio power amplifying circuit and an audio filtering circuit. The number of the microphones is two. The audio power amplifying circuit, the audio filtering circuit and the loudspeaker are sequentially connected, the audio power amplifying circuit, the voice coding and decoding circuit, the loudspeaker and the two microphones are all connected with the echo and noise eliminating circuit, and the voice coding and decoding circuit is connected with the central control module. The communication cell phone can improve cell phone functions and has the functions of eliminating echoes and noise. Voice communication quality is not affected in dangerous and severe environment.
Description
Technical field
The utility model relates to Wireless Telecom Equipment, particularly a kind of mining communication handset.
Background technology
Work under bad environment under the coal mine, unsafe factors such as water, fire, gas, roof fall are many, and personnel, equipment flowability are greatly; When running into the mine burst accident; Because communication network is smooth, means of communication is single, the network ability to bear is poor, often cause between ground floor and the subterranean layer, information is obstructed between subterranean layer and the subterranean layer, commander is ineffective in ground leadership, loss very easily causes a serious accident; Therefore; Means of communication under the coal mine must be stablized perfect, and is particularly high especially to down-hole emergency communication system and wireless communication system requirement, and mobile communication terminal acts on the most directly with of paramount importance in the communication system especially.
Current; Communication terminal is not within minority under the mine, but most of mobile phone is when carrying out voice communication and reckon without the mal-condition under the mine, and background noise is huge; Have a strong impact on voice communication quality, the mobile phone that promptly has this function of echo and noise cancellation does not simultaneously also occur.
The utility model content
The technical problem that the utility model will solve is that what to overcome existing mining communication handset can't eliminate the deficiency of noise and echo under the huge environment of background noise under the mine, a kind of mining communication handset with echo and noise cancellation is provided.
Be the technical solution problem, the technical scheme that the utility model adopts is:
A kind of mining communication handset with grouping intercommunication function is provided; Comprise power management module, central control module, wireless communication module, speech processing module and human-computer interaction module; Said power management module is connected with central control module; Central control module is connected with wireless communication module, speech processing module and human-computer interaction module respectively, and said wireless communication module connects antenna, and said speech processing module connects microphone and loudspeaker; Said speech processing module also comprises encoding and decoding speech circuit, echo and noise canceller circuit, audio power amplifying circuit and audio frequency filter circuit, and said microphone has two; Said audio power amplifying circuit, audio frequency filter circuit, loudspeaker connect successively; Said audio power amplifying circuit, encoding and decoding speech circuit, loudspeaker and two microphone echoes all are connected with noise canceller circuit, and said encoding and decoding speech circuit is connected to central control module.
Battery and power management module are used for power supply to system being provided; Wireless communication module is used for through wireless radio-frequency data being sent or received RF signal, and central control module is used to realize communication control function, and speech processing module is used to control voice; The encoding and decoding speech circuit is used for speech coding and decoding; Echo and noise canceller circuit are used to eliminate echo and noise, and audio power amplifying circuit is used for voice emplifying power, and the audio frequency filter circuit is used for the filtering clutter.
As a kind of improvement, also comprise shell, be provided with circuit board in the enclosure, said each module all is located on the circuit board; Battery links to each other with power management module with current-limiting resistance through fuse, and is connected to other each module through power management module.
As a kind of improvement, said power management module is made up of power management chip, LDO chip and DC/DC chip.
As a kind of improvement, in the said wireless communication module circuit, radio communication master chip, radiofrequency signal match circuit are connected with antenna successively.
As a kind of improvement, said human-computer interaction module comprises LCDs circuit and keyboard matrix circuit.
The technical conceive of the utility model is: this mining communication handset includes shell; Be provided with circuit board in the enclosure; Adopt lithium battery power supply, battery links to each other through other module on power management module and the circuit board, and human-computer interaction module links to each other with central control module; Central control module links to each other with wireless communication module; Wireless communication module is connected with antenna, and speech processing module links to each other with central control module, and speech processing module is connected with loudspeaker and two microphones.
In this communication handset; Except equally with the general underground mobile communication mobile phone of being released on the market at present realizing the functions such as basic conversation, note; Utilize the speech processing circuit of new design definition will have the function of automatic elimination echo and noise, improve voice call quality greatly.
In the scheduler routine management, call center or mobile phone can be under any circumstance with high-quality voice and target mobile phones conversations, and in adverse circumstances, effect is especially obvious under the hazardous environment, has very high realistic meaning.
The beneficial effect of the utility model mainly shows:
1, strengthens cell-phone function, have echo and noise cancellation;
2, under hazardous environment and adverse circumstances, do not influence voice call quality.
Description of drawings
Fig. 1 is the circuit module block diagram of an embodiment of the utility model.
Fig. 2 is the operation principle block diagram of power management module.
Fig. 3 is the operation principle block diagram of central control module.
Fig. 4 is the operation principle block diagram of human-computer interaction module.
Fig. 5 is the operation principle block diagram of wireless communication module.
Fig. 6 is the operation principle block diagram of the utility model.
Embodiment
It is emphasized that at first the functional module that the said product of the utility model is made up of various circuit or circuit constitutes.Wherein, most circuit or functional module can obtain through commercial mode.Even if can't be commercial, those skilled in the art utilize the technological means of its grasp to realize easily also according to the introduction of the utility model to interlock circuit or functional module.Therefore, the utility model does not exist can't understand the problem that maybe can't reproduce, so each circuit or the concrete electronic component combination mode of functional module are repeated no more.
Further describe below in conjunction with 1～6 pair of the utility model of accompanying drawing.
Mining communication handset with echo and noise cancellation; Comprise power management module, central control module, wireless communication module, speech processing module and human-computer interaction module; Said power management module is connected with central control module; Central control module is connected with wireless communication module, speech processing module and human-computer interaction module respectively, and said wireless communication module connects antenna, and said speech processing module connects microphone and loudspeaker; Said speech processing module also comprises encoding and decoding speech circuit, echo and noise canceller circuit, audio power amplifying circuit and audio frequency filter circuit, and said microphone has two; Said audio power amplifying circuit, audio frequency filter circuit, loudspeaker connect successively; Said audio power amplifying circuit, encoding and decoding speech circuit, loudspeaker and two microphone echoes all are connected with noise canceller circuit, and said encoding and decoding speech circuit is connected to central control module.
This mining communication handset includes shell; Be provided with circuit board in the enclosure; Adopt lithium battery power supply, battery links to each other through other module on power management module and the circuit board, and human-computer interaction module links to each other with central control module; Central control module links to each other with wireless communication module; Wireless communication module is connected with antenna, and speech processing module links to each other with central control module, and speech processing module is connected with loudspeaker and two microphones.
Power management module is made up of power management chip, LDO chip and DC/DC chip.Power supply links to each other with power management module with current-limiting resistance through fuse, and through power supply chip IC30, LDO chip IC 31, IC32 and DC/DC chip IC 33 are transformed into the needed supply power voltage of system.Normal by behind the start key; Power management chip IC30 starts working, and exists side by side and promptly enables LDO chip IC 31, and IC32 and DC/DC chip IC 33 begin output; Power management chip IC30 provide reset signal to central control module simultaneously; Central control module begins to start subsequently, and feeds back signal to power management chip IC30 and represent that output voltage is no problem, and power management chip IC30 receives operate as normal after the feedback signal.If power management chip IC30 can not receive the feedback signal of central control module, then power management chip IC30 cuts off all power supplies immediately.After power management chip IC30 and LDO chip IC 31 were opened, other module of system was waited for the order of central control module, and central control module is according to system arrangement other branch road of opening power managing chip IC30, LDO chip IC 32 and DC/DC chip IC 33 successively.Power supply is linked through resistance on the ADC pin of central control module U2, detects as power supply, and not within the scope of default, then central control module can notify power management chip IC30 to shut down by force like the power source voltage fluctuation range.In system's normal course of operation, if often press at least 2 seconds of closing key position, power management chip IC30 then produces shutdown and interrupts giving central control module, and central control module is after ready work, and notice power management chip IC30 shuts down.
The master chip of central control module is a 32 arm processor, and it is the control centre of whole system, can be through 24 address wires and 32 position datawires and SPI, and IIC, interface such as UART and peripheral module carry out exchanges data and control.In the utility model, central processing module is controlled speech processing module through parallel interface with the mode of bus, carries out data interaction with SPI interface and wireless communication module, communicates by letter with power management module and then carries out through the mode of IIC.Keyboard matrix circuit is then implemented control and data interaction through interruption and GPIO mouth with other circuit.Because central control module self has the A/D translation interface, so can detect power supply.
In the wireless communication module circuit, master chip is a wireless radio frequency modules, supports IEEE802.11b and IEEE802.11g.The IEEE802.11 standard is the international standard that meets ieee specification, and it works in 2.4GHz and exempts to authorize frequency range, supports the channel of 13 maximum rate 54Mbps.Power management chip IC30, LDO chip IC 31 is supplied power to the radio communication master chip respectively with DC/DC chip IC 32, through power management chip IC30 and central control module they is controlled respectively to satisfy the requirement of electrifying timing sequence.To the radio communication master chip power on accomplish after, beginning is carried out data interaction with central control module through the SPI interface, the radio communication master chip is in after the successful configuration to be received and dispatched or holding state.Under emission state; Data that central control module will send and receive voice packet there from speech processing module; Through the digital signal encoding circuit, be transferred to the radio communication master chip through the SPI interface, coded modulation is carried out in radio communication master chip inside; Amplify through the internal radio frequency amplifier, launch by antenna.During reception, the radiofrequency signal match circuit is delivered to the radio communication master chip and is handled, and obtains digital signal, gives central control module by the SPI interface again, and central control module is according to data content, or sends to speech processing module, or does other processing.
In the speech processing module circuit,, also include echo and noise canceller circuit except normal speech simulation with the digital circuit.Echo and noise cancellation are developed for adapting to the mine operational environment.When sending voice, this circuit receives voice analog signal from the encoding and decoding speech circuit, carries out white noise through echo and noise canceller circuit then and eliminates, and sends on the loudspeaker through audio power amplifying circuit and audio frequency filter circuit then.When receiving voice; This mobile phone has two microphone MC1, MC2; Be installed in the above and below of handset shell respectively; Insert the equal and noise canceller circuit of echo then, echo all can be used according to the sound that microphone MC1, MC2 receive with noise canceller circuit carry out the background noise filtering, simultaneously; Loudspeaker also be linked into echo all with noise canceller circuit as feedback signal, echo is all carried out echo elimination with noise canceller circuit according to the voice signal of the audio signal of loudspeaker and microphone MC1, MC2.After this; Echo all passes to the encoding and decoding speech circuit with the analog voice signal that noise canceller circuit will eliminate echo and noise signal; Convert analoging sound signal into digital signal by the encoding and decoding speech circuit and pass to central control module through LPT data wire and address wire again, issue target mobile phones through wireless mode then.Echo and noise cancellation have been realized thus.
Claims (5)
1. mining communication handset with echo and noise cancellation; Comprise power management module, central control module, wireless communication module, speech processing module and human-computer interaction module; Said central control module is connected with power management module, wireless communication module, speech processing module and human-computer interaction module respectively; Wireless communication module connects antenna, and speech processing module connects microphone and loudspeaker; It is characterized in that said speech processing module comprises encoding and decoding speech circuit, echo and noise canceller circuit, audio power amplifying circuit and audio frequency filter circuit, said microphone has two; Said audio power amplifying circuit, audio frequency filter circuit, loudspeaker connect successively; Said audio power amplifying circuit, encoding and decoding speech circuit, loudspeaker and two microphones all are connected with noise canceller circuit with echo, and said encoding and decoding speech circuit is connected to central control module.
2. mining communication handset according to claim 1 is characterized in that, also comprises shell, is provided with circuit board in the enclosure, and said each module all is located on the circuit board; Battery links to each other with power management module with current-limiting resistance through fuse, and is connected to other each module through power management module.
3. mining communication handset according to claim 1 is characterized in that, said power management module is made up of power management chip, LDO chip and DC/DC chip.
4. mining communication handset according to claim 1 is characterized in that, in the said wireless communication module circuit, radio communication master chip, radiofrequency signal match circuit are connected with antenna successively.
5. mining communication handset according to claim 1 is characterized in that said human-computer interaction module comprises LCDs circuit and keyboard matrix circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611754U CN202340252U (en) | 2011-11-18 | 2011-11-18 | Communication cell phone with functions of eliminating echoes and noise for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611754U CN202340252U (en) | 2011-11-18 | 2011-11-18 | Communication cell phone with functions of eliminating echoes and noise for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340252U true CN202340252U (en) | 2012-07-18 |
Family
ID=46488935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204611754U Expired - Lifetime CN202340252U (en) | 2011-11-18 | 2011-11-18 | Communication cell phone with functions of eliminating echoes and noise for mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202340252U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027540A (en) * | 2012-12-21 | 2015-11-04 | 微软技术许可有限责任公司 | Echo suppression |
| CN106454637A (en) * | 2016-12-16 | 2017-02-22 | 郑州云海信息技术有限公司 | Audio module silencing structure and method of server system |
| US9832582B2 (en) | 2013-09-16 | 2017-11-28 | Huawei Device (Dongguan) Co., Ltd. | Sound effect control method and apparatus |
| CN111355835A (en) * | 2019-12-16 | 2020-06-30 | 天津七一二通信广播股份有限公司 | Echo suppression circuit in hands-free call of operation display terminal and implementation method |
-
2011
- 2011-11-18 CN CN2011204611754U patent/CN202340252U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027540A (en) * | 2012-12-21 | 2015-11-04 | 微软技术许可有限责任公司 | Echo suppression |
| CN105027540B (en) * | 2012-12-21 | 2017-07-21 | 微软技术许可有限责任公司 | Echo suppressing |
| US9832582B2 (en) | 2013-09-16 | 2017-11-28 | Huawei Device (Dongguan) Co., Ltd. | Sound effect control method and apparatus |
| CN106454637A (en) * | 2016-12-16 | 2017-02-22 | 郑州云海信息技术有限公司 | Audio module silencing structure and method of server system |
| CN111355835A (en) * | 2019-12-16 | 2020-06-30 | 天津七一二通信广播股份有限公司 | Echo suppression circuit in hands-free call of operation display terminal and implementation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205864751U (en) | Broadband cluster and arrowband private network voice intercommunication equipment | |
| CN202340252U (en) | Communication cell phone with functions of eliminating echoes and noise for mining | |
| CN204349975U (en) | Based on the Shipborne terminal that the Big Dipper, GPS, marine satellite are integrated | |
| CN201374816Y (en) | Coal-mine underground communication cell-phone with one-key talkback function | |
| CN204761728U (en) | Multimode phone and radio station switching device | |
| CN101820459A (en) | Interface circuit of communication equipment and intelligent mobile communication terminal | |
| CN204615910U (en) | IP phone and radio station switching device | |
| CN202696827U (en) | Wireless control microphone | |
| CN208128235U (en) | A kind of Novel walkie talkie combined system | |
| CN202340251U (en) | Mine communication mobile phone with grouped talkback function | |
| CN110225215A (en) | A method of realizing that signal transmits between fire telephone host and extension set | |
| CN102231234A (en) | Public transportation intelligent dispatching system and method with support for VOIP 3G transmission | |
| CN202340253U (en) | Communication cell phone with locating function for mining | |
| CN204887368U (en) | Lanya earphone | |
| CN202206519U (en) | Bluetooth earphone | |
| CN201243284Y (en) | Portable satellite communication device | |
| CN201323626Y (en) | Television set with GSM/GPRS remote control function | |
| CN205283833U (en) | Wireless access gateway equipment of synthesizing of integrated doorbell suggestion | |
| CN203039833U (en) | Device automatically forwarding computer speech to wireless intercom | |
| CN208836420U (en) | A kind of intelligent radio sound box system | |
| CN202816113U (en) | Interference-shielding alarm | |
| CN202145651U (en) | Telephone set with WIFI routing function | |
| CN203233473U (en) | Tunnel emergency communication system | |
| CN202949573U (en) | Third generation (3G)/4G mine communication system | |
| CN202261691U (en) | IP (Internet Protocol)-network-based conversation station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |