CN208675219U - A kind of Wireless Networking transfering the letter onboard system - Google Patents
A kind of Wireless Networking transfering the letter onboard system Download PDFInfo
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- CN208675219U CN208675219U CN201821286890.7U CN201821286890U CN208675219U CN 208675219 U CN208675219 U CN 208675219U CN 201821286890 U CN201821286890 U CN 201821286890U CN 208675219 U CN208675219 U CN 208675219U
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- letter
- wireless networking
- chip
- onboard system
- transfering
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Abstract
The utility model discloses a kind of Wireless Networking transfering the letter onboard systems, including receiver, if digitization processing equipment and transmitter；After any receiver receives signal and is converted to baseband signal, it is reduced to voice signal through IF digital process equipment, while IF digital process equipment will be transferred to transmitter after the baseband signal re-modulation received, emit by transmitter；IF digital process equipment is mainly made of digital signal processor DSP, on-site programmable gate array FPGA and peripheral auxiliary circuits.The beneficial effects of the utility model are: the mobile unit is both configured to transfering the letter base station mode, and transfering the letter base station can extend communication coverage from networking by wireless first, user can be set as transfering the letter base station to the equipment or terminal of transferring the letter according to actual needs；Second, the equipment volume is small, light-weight, equipment power dissipation is low, assembly fixation is simple and direct, and user's operation is simple, can realize plurality of application scenes according to user demand.
Description
Technical field
The utility model relates to wireless communication technique fields, specifically, being related to a kind of Wireless Networking transfering the letter onboard system.
Background technique
Currently, either military or commercial communication equipment, all lacking one kind can guarantee fleet in complicated landform such as mountain area, city
Efficient communication solution when city street.Devise that a wireless transfering the letter from networking is vehicle-mounted to be set regarding to the issue above
It is standby.The equipment volume is small, low in energy consumption, in a certain range connects the fleet in position dispersion, traveling by Wireless Networking form
It picks up and, realize multinode wireless networking communication, extend communication overlay, bright/cipher sound, SMS function is provided；It can understand in real time
Situation in fleet's traveling guarantees that fleet's real-time voice in traveling is conversed；Rear command post can be by radio station in traveling
Fleet is commanded in real time, is dispatched.
Utility model content
The utility model is precisely in order to a kind of Wireless Networking transfering the letter onboard system for solving above-mentioned technical problem and designing.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of Wireless Networking transfering the letter onboard system, including receiver, if digitization processing equipment and transmitter；Any one
After platform receiver receives signal and is converted to baseband signal, voice signal is reduced to through IF digital process equipment, while in
Frequency word processing equipment will be transferred to transmitter after the baseband signal re-modulation received, be emitted by transmitter；Intermediate frequency digital
Processing equipment is mainly made of digital signal processor DSP, on-site programmable gate array FPGA and peripheral auxiliary circuits.
The Wireless Networking transfering the letter onboard system uplink: the IQ waveform of modulation is generated by digital signal processor DSP, is passed through
After on-site programmable gate array FPGA timing sequence conversion, data conversion DAC is given；IQ two paths of signals is mixed with transmitting local oscillator respectively
Frequently, after the radiofrequency signal for synthesizing default frequency point；Emit using power amplification, through antenna.
The Wireless Networking transfering the letter onboard system downlink: being received by antenna, receives this with default after low noise is amplified
Vibration is mixed, and radiofrequency signal is mixed the analog intermediate frequency signal of 45MHz；By bandpass filtering and amplifier, that is, analog circuitry processes
Afterwards, carry out digitlization and down coversion by if digitization chip divides IQ orthogonal with the sample rate of 160KHz after digital decimation
Two-way gives digital signal processor DSP；GMSK demodulation, bit decision and channel decoding are completed by digital signal processor DSP
Function.
The Wireless Networking transfering the letter onboard system, the peripheral auxiliary circuits being connected with digital signal processor DSP have voice
Acquisition chip, voice collecting chip use TLV320ADC3101 chip, are acquired to simulated voice, then pcm stream is led to
It crosses McASP and gives processor.
The Wireless Networking transfering the letter onboard system, the peripheral auxiliary circuits being connected with digital signal processor DSP have speech
Chip is played, speech plays chip and uses CS43L22 chip；By digital signal processor DSP the pcm stream after decompression,
CS43L22AIC is given by McASP, generates simulated voice.
The Wireless Networking transfering the letter onboard system, completes radio frequency control by on-site programmable gate array FPGA, specifically includes that
The configuration of frequency point, the setting of power, the setting to digital regulation resistance, the initial configuration to segment chip and transmitting-receiving switching.
The Wireless Networking transfering the letter onboard system, the LCD control module carried by digital signal processor DSP and display
It is connected.
The Wireless Networking transfering the letter onboard system, data conversion DAC are AD9717 chip.
The Wireless Networking transfering the letter onboard system, if digitization chip are AD9874 chip.
The Wireless Networking transfering the letter onboard system, digital signal processor DSP are bis- interior using the OMAP138 of TI company
Core processor.
This it is vehicle-mounted transfering the letter networked devices design concept aim at extensive fleet in traveling real-time traffic guidance,
Scheduling.When vehicle-mounted transfering the letter equipment receives the calling of any appliance sending, can receive voice can also be answered by handle, together
When the equipment voice this time can also produce by Wireless Networking link pass to next mobile unit, Xia Yishou
Equipment to voice is successively transmitted, and ensure that all devices in fleet can receive this time audio call；Fleet is expert at
If any vehicle can initiate active call when equipment is without communication service in, reported position or report the developments, ensure that vehicle
Team can be carried out real-time communication in traveling, while rear command post can understand the location information and vehicle, people of each vehicle in time
Member's state.
The fleet in advancing is solved the problems, such as in depopulated zone, the communication support of complicated landform.
Solve real-time understanding of the rear command post to each vehicle condition of fleet in traveling, and can be carried out and timely command,
Scheduling
The beneficial effects of the utility model are:
First, this vehicle-mounted transfering the letter networked devices aims at the communication support in fleet's traveling, user can by subject for ridicule
Realize voice service of the fleet from networking transfering the letter communication equipment.Digital modulation and demodulation is carried out by digital signal processor (DSP)
Algorithm realizes transfering the letter in a carrier wave different time-gap and wirelessly from network savvy.User can according to actual needs to the equipment into
Row setting: transfering the letter base station, transfering the letter terminal, user's operation is simple, equipment power dissipation is low, assembly fixation is simple and direct.
Second, this vehicle-mounted transfering the letter networked devices is small in size, light-weight, plurality of application scenes can be realized according to user demand.
The mobile unit is set as single-turn letter base station mode, and subordinate's mobile unit is set as transfering the letter terminal, in transfering the letter base station range
Interior transfering the letter terminal can be carried out conversing；The mobile unit is both configured to transfering the letter base station mode, and transfering the letter base station is joined certainly by wireless
Net can extend communication coverage.
Detailed description of the invention
Fig. 1 is the utility model Wireless Networking transfering the letter onboard system application schematic diagram.
Fig. 2 is the utility model Wireless Networking transfering the letter onboard system radio frequency hardware module configuration diagram.
Fig. 3 is the utility model Wireless Networking transfering the letter onboard system baseband processing portion configuration diagram.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Onboard system, including receiver, if digitization as shown in Figure 1-3, a kind of Wireless Networking of the utility model is transferred the letter
Processing equipment and transmitter；After any receiver receives signal and is converted to baseband signal, set through IF digital process
It is standby to be reduced to voice signal, while IF digital process equipment will be transferred to transmitter after the baseband signal re-modulation received,
Emitted by transmitter；IF digital process equipment mainly by digital signal processor DSP, on-site programmable gate array FPGA and
Peripheral auxiliary circuits composition.
The Wireless Networking transfering the letter onboard system uplink: the IQ waveform of modulation is generated by digital signal processor DSP, is passed through
After on-site programmable gate array FPGA timing sequence conversion, data conversion DAC is given；IQ two paths of signals is mixed with transmitting local oscillator respectively
Frequently, after the radiofrequency signal for synthesizing default frequency point；Emit using power amplification, through antenna.
The Wireless Networking transfering the letter onboard system downlink: being received by antenna, receives this with default after low noise is amplified
Vibration is mixed, and radiofrequency signal is mixed the analog intermediate frequency signal of 45MHz；By bandpass filtering and amplifier, that is, analog circuitry processes
Afterwards, carry out digitlization and down coversion by if digitization chip divides IQ orthogonal with the sample rate of 160KHz after digital decimation
Two-way gives digital signal processor DSP；GMSK demodulation, bit decision and channel decoding are completed by digital signal processor DSP
Function.
The Wireless Networking transfering the letter onboard system, the peripheral auxiliary circuits being connected with digital signal processor DSP have voice
Acquisition chip, voice collecting chip use TLV320ADC3101 chip, are acquired to simulated voice, then pcm stream is led to
It crosses McASP and gives processor.
The Wireless Networking transfering the letter onboard system, the peripheral auxiliary circuits being connected with digital signal processor DSP have speech
Chip is played, speech plays chip and uses CS43L22 chip；By digital signal processor DSP the pcm stream after decompression,
CS43L22AIC is given by McASP, generates simulated voice.
The Wireless Networking transfering the letter onboard system, completes radio frequency control by on-site programmable gate array FPGA, specifically includes that
The configuration of frequency point, the setting of power, the setting to digital regulation resistance, the initial configuration to segment chip and transmitting-receiving switching.
The Wireless Networking transfering the letter onboard system, the LCD control module carried by digital signal processor DSP and display
It is connected.
The Wireless Networking transfering the letter onboard system, data conversion DAC are AD9717 chip.
The Wireless Networking transfering the letter onboard system, if digitization chip are AD9874 chip.
The Wireless Networking transfering the letter onboard system, digital signal processor DSP are bis- interior using the OMAP138 of TI company
Core processor.
Wireless Networking transfering the letter onboard system is mainly the digital modulation and demodulation time-division slot realization transfering the letter and nothing for passing through single carrier
Line has many advantages, such as the equipment small in size, low in energy consumption from networking technology, the number transfering the letter of single carrier from networking technology.This sets
Standby receiver section uses superhet double conversion technology, and intermediate frequency uses digitized processing；Transmitter section is using wireless straight
Connect variable-frequency solutions.Primary processor uses TI company OMAP series dual core processor, it includes ARM microprocessor and digital signal
Processor DSP, volume and in terms of have unique advantage, wherein ARM use LINUX operating system, complete bottom drive
The functions such as dynamic, GUI, grouping and circuit data, protocol stack, DSP be mainly responsible for bottom algorithm design (such as: IQ modulation and demodulation,
The compress speech and decompression of soft acoustic code, channel coding/decoding and frame synchronization etc.), the processing of soft acoustic code, the control of power control and phaselocked loop
System etc., phonetic codec chip select the CODEC family chip of TI.Software mainly includes user interface program (UI) and transfering the letter association
Discuss stack program.Its external circuit also attached other several parts: sector card, display screen, speech acquisition other than minimum system
Playback, radio-frequency receiving-transmitting etc..All these functions cooperate the FPGA of radio frequency all by GPIO mouthfuls of the SPI interface of processor and auxiliary
To realize.The LCD control module that display is carried using processor, can simplify design, and ensure the stabilization of performance in this way.Key
Array is done using GPIO mouthfuls, acquisition key is scanned by program.By special keys, such as PTT, using independent GPIO foot.At OMAP
Bandwidth and function needed for reason device platform provides voice, data and multimedia, can provide low power dissipation design, be high-end nothing
Line equipment provides good performance.
The utility model is not limited to above-mentioned preferred forms, anyone obtained under the enlightenment of the utility model its
His any product identical or similar with the utility model, all falls within the protection scope of the utility model.
Claims (10)
- The onboard system 1. a kind of Wireless Networking is transferred the letter, including receiver, if digitization processing equipment and transmitter；Its feature exists In: any receiver is reduced to speech by IF digital process equipment for receiving signal and being converted to baseband signal Signal；IF digital process equipment is by the modulates baseband signals received and is transferred to transmitter, is emitted by transmitter；Intermediate frequency Digital processing device is mainly made of digital signal processor DSP, on-site programmable gate array FPGA and peripheral auxiliary circuits.
- The onboard system 2. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: uplink: digital signal processor DSP is used to generate the IQ waveform of modulation, and on-site programmable gate array FPGA realizes timing sequence conversion, and data conversion DAC is given in output；IQ Two paths of signals is mixed with transmitting local oscillator respectively, after the radiofrequency signal for synthesizing default frequency point；It is sent out by power amplification, through antenna It penetrates.
- The onboard system 3. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: downlink: antenna is received through low noise Amplification, is mixed with default reception local oscillator, radiofrequency signal is mixed to the analog intermediate frequency signal of 45MHz；By bandpass filtering With amplifier, that is, analog circuitry processes, by if digitization chip carry out digitlization and down coversion, after digital decimation with The sample rate of 160KHz divides the orthogonal two-way of IQ to give digital signal processor DSP；GMSK is completed by digital signal processor DSP Demodulation, bit decision and channel decoding function.
- The onboard system 4. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: with digital signal processor DSP Connected peripheral auxiliary circuits have voice collecting chip, and voice collecting chip uses TLV320ADC3101 chip, to simulated voice It is acquired, then gives processor by McASP pcm stream.
- The onboard system 5. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: with digital signal processor DSP Connected peripheral auxiliary circuits have speech to play chip, and speech plays chip and uses CS43L22 chip；By digital signal processor DSP gives CS43L22AIC the pcm stream after decompression, by McASP, generates simulated voice.
- The onboard system 6. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: by field programmable gate array FPGA complete radio frequency control, specifically include that the configuration of frequency point, the setting of power, to the setting of digital regulation resistance, to segment chip Initial configuration and transmitting-receiving switching.
- The onboard system 7. Wireless Networking according to claim 1 is transferred the letter, it is characterised in that: by digital signal processor DSP Included LCD control module is connected with display.
- The onboard system 8. Wireless Networking according to claim 2 is transferred the letter, it is characterised in that: data conversion DAC is AD9717 Chip.
- The onboard system 9. Wireless Networking according to claim 3 is transferred the letter, it is characterised in that: if digitization chip is AD9874 chip.
- 10. the according to claim 1, transfering the letter of Wireless Networking described in 2,3,4,5 or 7 onboard system, it is characterised in that: digital signal Processor DSP uses the OMAP138 dual core processor of TI company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821286890.7U CN208675219U (en) | 2018-08-09 | 2018-08-09 | A kind of Wireless Networking transfering the letter onboard system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821286890.7U CN208675219U (en) | 2018-08-09 | 2018-08-09 | A kind of Wireless Networking transfering the letter onboard system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208675219U true CN208675219U (en) | 2019-03-29 |
Family
ID=65836025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821286890.7U Active CN208675219U (en) | 2018-08-09 | 2018-08-09 | A kind of Wireless Networking transfering the letter onboard system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208675219U (en) |
-
2018
- 2018-08-09 CN CN201821286890.7U patent/CN208675219U/en active Active
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