CN102932028A - Multi-frequency wireless digital-analog compatible mobile communication device and communication system thereof - Google Patents
Multi-frequency wireless digital-analog compatible mobile communication device and communication system thereof Download PDFInfo
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- CN102932028A CN102932028A CN2012104250702A CN201210425070A CN102932028A CN 102932028 A CN102932028 A CN 102932028A CN 2012104250702 A CN2012104250702 A CN 2012104250702A CN 201210425070 A CN201210425070 A CN 201210425070A CN 102932028 A CN102932028 A CN 102932028A
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Abstract
The invention discloses a multi-frequency wireless digital-analog compatible mobile communication device which comprises a voice acquisition device, a voice play device, a power device, a key device, a display device, a storage device, a radio-frequency device and a central processing device connected with the voice acquisition device, the voice play device, the power device, the key device, the display device, the storage device and the radio-frequency device. The device disclosed by the invention adopts a wireless digital communication special chip as a core and can realize the functions of digital voice communication, editing, short message receiving and sending and the like through a voice signal digital processing module, a channel coding/decoding function module, a radio-frequency device and interface design. The digital communication special chip has a high integration level and a simple structure, and is low in cost and convenient to manufacture; and with only one external storage chip, a radio-frequency device and corresponding peripheral application circuit, the digital communication function can be realized.
Description
Technical field
The present invention relates to wireless communication field, particularly multi-frequency radio DA compatibility mobile communications device and the communication system thereof in railway communication field.
Background technology
No. 666 files of China Ministry of Industry and Information issue are indicating that artificial antenna intercommunication in 2016 withdraws from the domestic market fully, and the digital radio intercommunication will replace the artificial antenna intercommunication.The digital radio intercommunication is with analog signal figure, in the mode of digital coding and Digital Modulation, and the communication mode that adopts digital signal processing method to be optimized.Compare with the artificial antenna intercommunication, the digital radio intercommunication has many advantages, at first be to utilize better frequency spectrum resource, similar to the cellular digital technology, the digital radio intercommunication can be loaded more users such as 25KHz on the channel of an appointment, improve the availability of frequency spectrum, this is a kind of solution that solves frequency congestion, has long-range meaning.Next is to improve speech quality.Because digital communication technology has function of data error correction, compare with analog wireless communication, can be within the specific limits widely in the signal environment, realize better speech audio quality, its audio noise that receives can be less, and sound is more clear, digital communication raising and improvement voice-and-data are integrated, changed signal and increased the weakness that reduces with communication distance, compared with traditional analog voice system, the digital radio intercommunication can provide better data processing and interface function.Digital communication meets the rule of Communication Development, is the direction of wireless communication technology development.
From 1997, China railways was implemented speed raising six times, and train speed has increased significantly, and goods train quantity increases, and heavy haul train constantly enlarges.At train under the high-speed and high density service conditions, transporting on the busy railway line, train list section operation interval only has 3-7min, under this form, bring safely new pressure for undoubtedly the Contraction in Site maintenance activity, proposed to upgrade higher requirement to trouble free service.If think little of on-the-spot protection or on-the-spot protection is improper, operating personnel on the line can not predict send a car and at present the road keep away car, then may cause the generation of operating personnel's human casualty accident.
According to " [2006] No. 177 ones of railway engineering safety rule Railway transportation of The Ministry of Railway of the People's Republic of China, MOR make " requirement, all construction and generation line fault places that affects traffic safety all should arrange protection.Construction director, protection personnel must carry the communication equipments such as train dispatching radiophone.Rail examination operation protection personnel, gatekeeper, patrol and examine and the guard, all should carry the communication equipments such as train dispatching radiophone, train dispatch radio communication intercom, monitor at any time the train operation situation.Can directly circulate a notice of Platform attendant or train operator during the abnormal situation.Job location and protected personnel Jian look at when condition is bad to be contacted without phone again, protected personnel in the middle of should setting up.Liaison man in the station should contact once by every at least 3-5min with on-the-spot protection personnel, conversation is carried out three affirmation systems and (is confirmed the other side's name, confirms that the other side does not hear, rehearses and talked about content, confirm the operation of facility upper track, lower road is complete, beginning operation and the order etc. of opening the operation circuit).
In railway communication, the wireless intercom device extensive use is along with era development has also proposed the requirement that updates to the wireless intercom device function.At present, the interval wireless signal that how to ensure different terrain and different range effectively covers, how to guarantee the security protection personnel in strict accordance with standard operation, how to manage protected personnel etc. and be the worker and be engaged in that electricity is engaged in and the power supply department safe construction protects practical problem in the urgent need to address.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming of prior art, proposes a kind ofly to realize Train Approaching real-time early warning, GPS positioning function, is easy to carry, uses flexible, simple to operate, as to save cost multi-frequency radio DA compatibility mobile communications device and availability of frequency spectrum height, the mobile communication system with multiple networking mode of good stability, convenient management, webmaster easy operating.
The present invention adopts following technical scheme:
Multi-frequency radio DA compatibility mobile communications device, it is characterized in that: comprise voice acquisition device, voice playing device, supply unit, key device, display unit, storage device, radio-frequency unit and with above-mentioned voice acquisition device, voice playing device, supply unit, key device, display unit, the central processing unit that storage device links to each other with radio-frequency unit, this central processing unit is used for amplifying by the audio signal that voice acquisition device collects and obtains sending into behind the 4FSK signal radio-frequency unit with base band signal process and modulate and send after producing radiofrequency signal, and will carry out frequency-selecting by the radiofrequency signal that radio-frequency unit receives, secondary mixing, the modulation frequency discrimination obtains carrying out base band signal process behind the 4FSK signal and obtains audio signal, broadcasts finally by voice playing device.
Further, described central processing unit includes audio power amplifier circuit and baseband chip, described audio power amplifier circuit links to each other with voice playing device with described voice acquisition device and is used for audio signal is amplified, described baseband chip links to each other with audio power amplifier circuit with described radio-frequency unit and is used for and will carries out the AD sampling through the audio signal that audio power amplifier circuit amplifies, speech processes and coding obtain delivering to radio-frequency unit behind the 4FSK signal, and the radiofrequency signal that radio-frequency unit receives is carried out frequency-selecting, secondary mixing, the modulation frequency discrimination obtains carrying out base band signal process behind the 4FSK signal and obtains audio signal.
Further, described radio-frequency unit includes radio-frequency (RF) receiving circuit, rf modulation circuit, radio-frequency (RF) power amplification circuit, phase-locked loop, transmitting-receiving change-over circuit and antenna, and the transmitting-receiving change-over circuit links to each other with antenna with radio-frequency (RF) receiving circuit input, radio-frequency (RF) power amplification circuit output end; The radio-frequency (RF) power amplification circuit input end links to each other with the rf modulation circuit output; Radio-frequency (RF) receiving circuit output and rf modulation circuit input are connected to respectively described baseband chip; Phase-locked loop links to each other with radio-frequency (RF) receiving circuit, rf modulation circuit and baseband chip.
Further, also include the gps signal receiving system, this gps signal receiving system links to each other with described central processing unit and positions for receiving gps signal.
Further, also include the startup self-detection device, this startup self-detection device links to each other with described central processing unit and is used for carrying out transmitting power and the inspection of antenna standing wave, networking self check and supply voltage self check.
Further, also include 800MHz and call the machine receiving system, this 800MHz calls machine receiving system to link to each other with described central processing unit to be used for delivering to described central processing unit behind the Train Approaching early warning signal of reception from station radio set, and described central processing unit is controlled the described voice playing device sound that gives a warning.
Multi-frequency radio DA compatibility mobile communication system is characterized in that: comprise Network Management Equipment, at least one trunking and above-mentioned arbitrary mobile communications device.
Further, described Network Management Equipment includes PC, intercom, and external speaker, external microphone, recorder and supporting webmastering software, described external speaker, external microphone and recorder link to each other with described PC.
Further, described trunking is optical fiber repeater repeater or digital repeater or analog repeater.
By the above-mentioned description of this invention as can be known, compared with prior art, the present invention has following beneficial effect:
1, has powerful digital function.Adopt Digital Signal Processing, so that the availability of frequency spectrum is higher, the channel multiplication, antijamming capability is stronger, and speech quality is better;
2, the appearance design of hommization.Adopt large scale color OLED display screen, out of doors also can be very clear to demonstration information under the high light, button and voice suggestion human oriented design, flexible to operation;
3, noise suppression, voice are outstanding.No matter adopted advanced narrowband speech encoding and decoding technique and digital error correcting technique, be in noisy environment, or in the edge zone of coverage, all can obtain clearly speech.And the phonetic incepting effect has also greatly been optimized in the utilization of AGC technology, adjusts the coverage between user and the microphone, guarantees the conversation definition.Voice playing device adopts built-in 1.5W supersound projector, guarantees clear sound, loud and clear;
4, compatible with digital and analog communication pattern can automatically switch;
5, more lasting service time of battery.Compare analog-interphone, supply unit of the present invention can obtain nearly 40% additional working hour.Owing to adopt ASIC-based, simple circuit by software power saving design, has electricity-saving function, makes Overall Power Consumption extremely low, and longer stand-by time is arranged;
6, startup self-detection function comprises the self check promptings such as power amplifier transmitting power, cell voltage, networking, antenna open circuit, makes things convenient for operation and maintenance;
7, voice encryption and data encryption feature.Adopt advanced digital technology, if signaling or ID do not mate, voice signal can't be monitored, thereby guarantee to greatest extent the privacy of user communication;
8, abundant business function.Except traditional communication service, also support several data professional, send out and single-shot such as short message mass-sending, group, scan channel, a key is reported to the police, and number is passed on Gong and can be waited;
9, gps data collection, storage and demonstration regularly send gps data to webmaster, convenient location and tracking;
10,800MHz beep-pager receiving function, receive in real time that the train radio station sends near early warning information, under the communicator emission state, still can paging receiving information, flexible, reduce cost, can remind the operating personnel and at present the road dodge;
But 11, conversation real-time recording conveniently has good grounds afterwards;
12, have second development interface, make things convenient for the intercom function expansion.
Multi-frequency radio DA compatibility mobile communication system of the present invention can adopt with multiple different networking models such as frequency, alien frequencies, add the application of corresponding Network Management Equipment, trunking and supporting webmastering software, form a whole set of complete railway, electricity affair, power supply safety construction protection solution.
Description of drawings
Fig. 1 is the syndeton schematic diagram of mobile communications device of the present invention;
Fig. 2 is that train sends schematic diagram near early warning signal;
Fig. 3 is for adopting the inter-frequency networking schematic diagram of optical fiber repeater;
Fig. 4 is the identical networking that adopts digital repeater (in the group can intercommunication) schematic diagram;
Fig. 5 is for adopting identical networking (needing relaying in the group) schematic diagram of digital repeater;
Fig. 6 is for adopting optical fiber repeater to add the identical networking schematic diagram of digital repeater.
Embodiment
Below the invention will be further described by embodiment.
With reference to Fig. 1, multi-frequency radio DA compatibility mobile communications device, comprise voice acquisition device 1, voice playing device 2, supply unit 3, key device 4, display unit 5, storage device 6, radio-frequency unit 7 and with above-mentioned voice acquisition device 1, voice playing device 2, supply unit 3, key device 4, display unit 5, the central processing unit 8 that storage device 6 links to each other with radio-frequency unit 7, central processing unit 8 includes audio power amplifier circuit 11 and baseband chip 12, audio power amplifier circuit 11 links to each other with voice playing device 2 with voice acquisition device 1 and is used for audio signal is amplified, baseband chip 12 links to each other with audio power amplifier circuit 11 with radio-frequency unit 7 and is used for and will carries out the AD sampling through the audio signal that audio power amplifier circuit 11 amplifies, speech processes and coding obtain delivering to radio-frequency unit 7 behind the 4FSK signal, and the radiofrequency signal that radio-frequency unit 7 receives is carried out frequency-selecting, secondary mixing, the modulation frequency discrimination obtains carrying out base band signal process behind the 4FSK signal and obtains audio signal.Radio-frequency unit 7 includes radio-frequency (RF) receiving circuit 13, rf modulation circuit 14, radio-frequency (RF) power amplification circuit 15, phase-locked loop 16, transmitting-receiving change-over circuit 17 and antenna, and transmitting-receiving change-over circuit 17 links to each other with antenna with radio-frequency (RF) receiving circuit 13 inputs, radio-frequency (RF) power amplification circuit 15 outputs and is used for carrying out the conversion of transmission circuit; Radio-frequency (RF) power amplification circuit 15 inputs link to each other with rf modulation circuit 14 outputs and amplify for the radiofrequency signal that will launch; Radio-frequency (RF) receiving circuit 13 outputs and rf modulation circuit 14 inputs are connected to respectively baseband chip; Phase-locked loop links to each other with radio-frequency (RF) receiving circuit, rf modulation circuit and baseband chip, can adopt the ADF4216 chip.
The present invention also includes gps signal receiving system 21, startup self-detection device 22 and 800MHz and calls machine receiving system 23, and this gps signal receiving system 21 links to each other with central processing unit 8 and positions for receiving gps signal; Startup self-detection device 22 links to each other with central processing unit 8 for carrying out the inspections of transmitting power and antenna standing wave, networking self check, supply voltage self check and antenna open circuit self check etc.; 800MHz delivers to central processing unit 8 after calling machine receiving system 23 to link to each other with central processing unit 8 to be used for receiving Train Approaching early warning signal from station radio set, and central processing unit 8 is controlled voice playing device 2 sound that gives a warning.Wherein, 800MHz calls the receiving chip in the machine receiving system 23 can adopt the UAA2080 chip, wherein input control RE(numeral in the UAA2080 interface), another one data output interface DO.The ADF4216 interface: data inputs DATA, clock input CLC, enable to control LE, losing lock checks lock detect.UAA2080 and MCU communication process: MCU are under non-transmission data mode, control RE makes chip receive data, two inputs of MCU employing IO connect IO of DO for interrupting pin (trailing edge interrupt mode) after interruption IO finishes synchronous detection, impeding shutdown, timer is opened.Another pin adopts 1.2K bit/s speed image data, and after data receiver was finished dealing with, opens interrupters was waited for next data.
Multi-frequency radio DA compatibility mobile communication system comprises Network Management Equipment, trunking and mobile communications device of the present invention.Network Management Equipment includes PC, intercom, and external speaker, external microphone, recorder and supporting webmastering software, external speaker, external microphone and recorder link to each other with PC.The webmastering software major function is as follows: inquiry intercom gps data shows the intercom position at map; Inquiry transmitting power and standing-wave ratio; The inquiry battery electric quantity is estimated stand-by time and air time; The note broadcast capability; Receive note record Presentation Function; Automatic reception intercom warning information and gps data.The networking mode that adopts is as follows:
1, a key is reported to the police: Along Railway road junction and the high-risk some most important thing that safety management is railway security work, break down in the road junction, the road junction guard should carry out rapidly the principle of " first protection; reprocessing " decidedly, accomplish as possible " rather stopping not hit ", in time correctly establish protection, block and stop train.According to road junction and high-risk some safety management requirement, in conjunction with staff's communication, mobile communications device of the present invention can be with the audio alert Data Enter that defines, report to the police when in case of emergency triggering mobile communications device of the present invention by a key, the alarm voice information of in advance typing is reported out and sent near train, receive information near the locomotive platform of train, then carry out brake hard, avoid accident to occur, convenient and swift.(with reference to Fig. 2)
2, inter-frequency networking: the scheduling of Network Management Equipment can with the in-pipe communicator in carry out group calling and group busy, communicator is only to converse with scheduling in the pipe.Can adopt original optical fiber repeater or analog repeater to carry out signal and cover, the in-pipe communicator can't directly communicate, and is equal to analog communication system.(with reference to Fig. 3)
3, identical networking (group in can intercommunication) must adopt digital repeater, carries out the shift frequency relaying, perhaps use optical fiber repeater, require communicator receive frequency automatic scan, wherein, communicator can group calling and group busy in every pipe, can get ready to go into action in hundreds.(with reference to Fig. 4)
4, identical networking (needing relaying in the group), the mode of employing digital junction.(with reference to Fig. 5)
5, identical networking (needing relaying in the group) adopts optical fiber repeater to add the mode of digital relaying.(with reference to Fig. 6)
Above-mentioned only is a specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection range of the present invention.
Claims (9)
1. multi-frequency radio DA compatibility mobile communications device, it is characterized in that: comprise voice acquisition device, voice playing device, supply unit, key device, display unit, storage device, radio-frequency unit and with above-mentioned voice acquisition device, voice playing device, supply unit, key device, display unit, the central processing unit that storage device links to each other with radio-frequency unit, this central processing unit is used for amplifying by the audio signal that voice acquisition device collects and obtains sending into behind the 4FSK signal radio-frequency unit with base band signal process and modulate and send after producing radiofrequency signal, and will carry out frequency-selecting by the radiofrequency signal that radio-frequency unit receives, secondary mixing, the modulation frequency discrimination obtains carrying out base band signal process behind the 4FSK signal and obtains audio signal, broadcasts finally by voice playing device.
2. multi-frequency radio DA compatibility mobile communications device as claimed in claim 1, it is characterized in that: described central processing unit includes audio power amplifier circuit and baseband chip, described audio power amplifier circuit links to each other with voice playing device with described voice acquisition device and is used for audio signal is amplified, described baseband chip links to each other with audio power amplifier circuit with described radio-frequency unit and is used for and will carries out the AD sampling through the audio signal that audio power amplifier circuit amplifies, speech processes and coding obtain delivering to radio-frequency unit behind the 4FSK signal, and the radiofrequency signal that radio-frequency unit receives is carried out frequency-selecting, secondary mixing, the modulation frequency discrimination obtains carrying out base band signal process behind the 4FSK signal and obtains audio signal.
3. multi-frequency radio DA compatibility mobile communications device as claimed in claim 1 or 2, it is characterized in that: described radio-frequency unit includes radio-frequency (RF) receiving circuit, rf modulation circuit, radio-frequency (RF) power amplification circuit, phase-locked loop, transmitting-receiving change-over circuit and antenna, and the transmitting-receiving change-over circuit links to each other with antenna with radio-frequency (RF) receiving circuit input, radio-frequency (RF) power amplification circuit output end; The radio-frequency (RF) power amplification circuit input end links to each other with the rf modulation circuit output; Radio-frequency (RF) receiving circuit output and rf modulation circuit input are connected to respectively described baseband chip; Phase-locked loop links to each other with radio-frequency (RF) receiving circuit, rf modulation circuit and baseband chip.
4. multi-frequency radio DA compatibility mobile communications device as claimed in claim 3 is characterized in that: also include the gps signal receiving system, this gps signal receiving system links to each other with described central processing unit and is used for receiving gps signal and positions.
5. such as claim 3 or 4 described multi-frequency radio DA compatibility mobile communications devices, it is characterized in that: also include the startup self-detection device, this startup self-detection device links to each other with described central processing unit and is used for carrying out transmitting power and the inspection of antenna standing wave, networking self check and supply voltage self check.
6. multi-frequency radio DA compatibility mobile communications device as claimed in claim 5, it is characterized in that: also include 800MHz and call the machine receiving system, this 800MHz calls machine receiving system to link to each other with described central processing unit to be used for delivering to described central processing unit behind the Train Approaching early warning signal of reception from station radio set, and described central processing unit is controlled the described voice playing device sound that gives a warning.
7. multi-frequency radio DA compatibility mobile communication system is characterized in that: comprise the arbitrary mobile communications device described in Network Management Equipment, at least one trunking and the claim 1 to 6.
8. multi-frequency radio DA compatibility mobile communication system as claimed in claim 7, it is characterized in that: described Network Management Equipment includes PC, intercom, external speaker, external microphone, recorder and supporting webmastering software, described external speaker, external microphone and recorder link to each other with described PC.
9. multi-frequency radio DA compatibility mobile communication system as claimed in claim 7, it is characterized in that: described trunking is optical fiber repeater repeater or digital repeater or analog repeater.
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| CN105894215A (en) * | 2016-05-19 | 2016-08-24 | 成都零线科技有限公司 | Airport ground service simulation system |
| CN109760723A (en) * | 2018-09-28 | 2019-05-17 | 李立 | A kind of novel railway road junction source of early warning |
| CN112511478A (en) * | 2021-02-04 | 2021-03-16 | 湖南国科锐承电子科技有限公司 | Voice storage and transmission device and method based on FPGA |
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Application publication date: 20130213 |