CN104485985A - Transfer communication device and method for short-wave radio station communication - Google Patents
Transfer communication device and method for short-wave radio station communication Download PDFInfo
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- CN104485985A CN104485985A CN201410797021.0A CN201410797021A CN104485985A CN 104485985 A CN104485985 A CN 104485985A CN 201410797021 A CN201410797021 A CN 201410797021A CN 104485985 A CN104485985 A CN 104485985A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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Abstract
The invention belongs to the technical field of transfer communication in wireless communication and particularly relates to a transfer communication device and method for short-wave radio station communication. The transfer communication device for short-wave radio station communication comprises four short-wave radio stations and accessories thereof, a voltage stabilizing circuit, a switching power supply, an ARM processor and a peripheral circuit thereof, a level switching circuit, an audio processing circuit and a modulation-demodulation module, wherein the VCC end of the ARM processor is electrically connected with the output end of the switching power supply, the TTL end of the level switching circuit is electrically connected with the corresponding port of the ARM processor, the RS232 end of the level switching circuit is electrically connected with the corresponding ports of the short-wave radio stations, the receiving end of the audio processing circuit is connected with the short-wave radio stations, and the output end of the audio processing circuit is connected with the audio input end of the modulation-demodulation module.
Description
Technical field
The invention belongs to the transfering the letter technical field of radio communication, particularly a kind of transfering the letter device and transfering the letter method being applicable to short-wave radio set communication.
Background technology
Signals in wireless communications straightline propagation runs into special obstacle thing and cannot pass through or be disturbed by complex electromagnetic environment to be one of principal element affecting communication distance.Under cannot changing terrain environment, there is no the field of large power long antenna or regional area electromagnetic environment complicated situation, it is obviously unpractical for solving the difficulty of being obstructed that communicates, this just hinders radio station use in particular circumstances, limits the Distance geometry effect of station telecommunication.
Summary of the invention
The object of the invention is to propose a kind of the transfering the letter device and the transfering the letter method that are applicable to short-wave radio set communication.The present invention when not changing existing communication means and equipment, just can solve because environmental factor causes the difficulty communicating and be obstructed, can also reach the object of simple expanding communication distance.
For realizing above-mentioned technical purpose, the present invention adopts following technical scheme to be achieved.
Technical scheme one:
A kind of transfering the letter device being applicable to short-wave radio set communication, it is characterized in that, comprise: the first transfering the letter module, the second transfering the letter module, twisted-pair feeder and the first short-wave radio set are to the 4th short-wave radio set, described first short-wave radio set and the second short-wave radio set form two-way wireless communication and are connected, and described 3rd short-wave radio set forms two-way wireless communication with the 4th short-wave radio set and is connected; Described second short-wave radio set has audio signal output end and audio signal input end, and described 3rd short-wave radio set has audio signal output end and audio signal input end; Described first transfering the letter module is electrically connected audio signal output end and the audio signal input end of the second short-wave radio set respectively, and described second transfering the letter module is electrically connected audio signal output end and the audio signal input end of the 3rd short-wave radio set respectively;
Described each transfering the letter module comprises modulation /demodulation module, arm processor, described each modulation /demodulation module comprises demodulator and modulator, the modulator of each modulation /demodulation module has transmitting terminal and receiving terminal, the demodulator of each modulation /demodulation module has transmitting terminal and receiving terminal, and described arm processor has the first UART interface to the 4th UART interface; The audio signal output end of the short-wave radio set of the receiving terminal electrical connection correspondence of the second UART interface of the arm processor of described each transfering the letter module, the arm processor of described each transfering the letter module is used for by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, the receiving terminal of the modulator of the modulation /demodulation module that the transmitting terminal electrical connection of the 4th UART interface of the arm processor of described each transfering the letter module is corresponding; The receiving terminal of the 4th UART interface of the arm processor of the transmitting terminal electrical connection correspondence of the demodulator of described each modulation /demodulation module, the arm processor of described each transfering the letter module is used for the transmitting terminal of Signal transmissions to the second UART interface of the receiving terminal from its 4th UART interface, the audio signal input end of the short-wave radio set of the transmitting terminal electrical connection correspondence of the second UART interface of the arm processor of described each transfering the letter module;
The transmitting terminal of the modulator of the modulation /demodulation module of described first transfering the letter module is electrically connected the receiving terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder, the receiving terminal of the demodulator of the modulation /demodulation module of described first transfering the letter module is electrically connected the transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder.
Technical scheme two:
Be applicable to a transfering the letter method for short-wave radio set communication, based on the above-mentioned transfering the letter device being applicable to short-wave radio set communication, comprise:
When the first short-wave radio set outwards sends radiofrequency signal, the second short-wave radio set receives the radiofrequency signal from the first short-wave radio set, and the second short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal; Audio signal is sent to the receiving terminal of the second UART interface of the arm processor of the first transfering the letter module by the second short-wave radio set, the arm processor of the first transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the first transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the first transfering the letter module; The modulator of the modulation /demodulation module of the first transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the first transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the second transfering the letter module;
The demodulator of the modulation /demodulation module of the second transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module; The audio signal of reception is sent to the receiving terminal of the 4th UART interface of the arm processor of the second transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module, the arm processor of the second transfering the letter module is by the transmitting terminal of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, and the audio signal of reception is sent to the audio signal input end of the 3rd short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the second transfering the letter module; The audio signal received is changed radiofrequency signal by the 3rd short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the 4th short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set;
When the 4th short-wave radio set outwards sends radiofrequency signal, the 3rd short-wave radio set receives the radiofrequency signal from the 4th short-wave radio set, and the 3rd short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal; Audio signal is sent to the receiving terminal of the second UART interface of the arm processor of the second transfering the letter module by the 3rd short-wave radio set, the arm processor of the second transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the second transfering the letter module; The modulator of the modulation /demodulation module of the second transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the first transfering the letter module;
The demodulator of the modulation /demodulation module of the first transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module; The audio signal of reception is sent to the receiving terminal of the 4th UART interface of the arm processor of the first transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module, the arm processor of the first transfering the letter module is by the transmitting terminal of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, and the audio signal of reception is sent to the audio signal input end of the second short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the first transfering the letter module; The audio signal received is changed radiofrequency signal by the second short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the first short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set.
Beneficial effect of the present invention is: when not changing existing communication means and equipment, can realize the transfering the letter communication in radio station; Can transfering the letter data be processed and be controlled, realize automatically transferring the letter process.
Accompanying drawing explanation
Fig. 1 is a kind of general structure schematic diagram being applicable to the transfering the letter device of short-wave radio set communication of the present invention;
Fig. 2 is a kind of structural representation being applicable to the transfering the letter module of the transfering the letter device of short-wave radio set communication of the present invention;
Fig. 3 is the transfering the letter method transfer letter data transmission schematic diagram being applicable to short-wave radio set communication of the present invention;
Fig. 4 is that of the present invention being applicable to receives and dispatches command schematic diagram in the transfering the letter method of short-wave radio set communication.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to Fig. 1, it is a kind of general structure schematic diagram being applicable to the transfering the letter device of short-wave radio set communication of the present invention.With reference to Fig. 2, it is a kind of structural representation being applicable to the transfering the letter module of the transfering the letter device of short-wave radio set communication of the present invention.This transfering the letter device being applicable to short-wave radio set communication comprises the first short-wave radio set to the 4th short-wave radio set, first short-wave radio set and the second short-wave radio set form two-way wireless communication and are connected, and described 3rd short-wave radio set forms two-way wireless communication with the 4th short-wave radio set and is connected.Each short-wave radio set has audio signal output end and audio signal input end, when the first short-wave radio set audio signal changed into radiofrequency signal outwards send time, second short-wave radio set changes the radiofrequency signal of the correspondence of reception into audio signal, and audio signal is outwards exported from audio signal output end.In like manner, when the 4th short-wave radio set audio signal changed into radiofrequency signal outwards send time, the 3rd short-wave radio set changes the radiofrequency signal of the correspondence of reception into audio signal, and audio signal is outwards exported from audio signal output end.In the embodiment of the present invention, each short-wave radio set also has non-audio data and command function, when the first short-wave radio set non-audio data and instruction changed into radiofrequency signal outwards send time, second short-wave radio set changes the radiofrequency signal of the correspondence of reception into non-audio data and instruction, non-audio data and instruction are encapsulated as the SLIP packet meeting RS-232 level, this SLIP packet is outwards exported.In like manner, when the 4th short-wave radio set non-audio data and instruction changed into radiofrequency signal outwards send time, 3rd short-wave radio set changes the radiofrequency signal of the correspondence of reception into non-audio data and instruction, non-audio data and instruction are encapsulated as the SLIP packet meeting RS-232 level, this SLIP packet is outwards exported.In above-mentioned four short-wave radio sets, the second short-wave radio set and the 3rd short-wave radio set are the short-wave radio set supporting transfering the letter function, and the first short-wave radio set and the 4th short-wave radio set are universal short-wave radio set.
In the embodiment of the present invention, the above-mentioned transfering the letter device being applicable to short-wave radio set communication also comprises the first transfering the letter module, the second transfering the letter module and many twisted-pair feeders, and the length of every bar twisted-pair feeder is no more than 5km.First transfering the letter module is electrically connected audio signal output end and the audio signal input end of the second short-wave radio set respectively, and the second transfering the letter module is electrically connected audio signal output end and the audio signal input end of the 3rd short-wave radio set respectively.Each transfering the letter module comprises modulation /demodulation module, arm processor, described each modulation /demodulation module comprises demodulator and modulator, the modulator of each modulation /demodulation module has transmitting terminal and receiving terminal, the demodulator of each modulation /demodulation module has transmitting terminal and receiving terminal, the receiving terminal of the demodulator of the transmitting terminal of the modulator of each modulation /demodulation module and the modulator of each modulation /demodulation module adopts ripe K interface respectively, is convenient to the long distance wired transmission realized between two modulation /demodulation modules.
In the embodiment of the present invention, the arm processor of each transfering the letter module has the first UART interface to the 4th UART interface; The audio signal output end of the short-wave radio set of the receiving terminal electrical connection correspondence of the second UART interface of the arm processor of each transfering the letter module, the arm processor of each transfering the letter module is used for by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, the receiving terminal of the modulator of the modulation /demodulation module that the transmitting terminal electrical connection of the 4th UART interface of the arm processor of each transfering the letter module is corresponding; The receiving terminal of the 4th UART interface of the arm processor of the transmitting terminal electrical connection correspondence of the demodulator of described each modulation /demodulation module, the arm processor of each transfering the letter module is used for the transmitting terminal of Signal transmissions to the second UART interface of the receiving terminal from its 4th UART interface, the audio signal input end of the short-wave radio set of the transmitting terminal electrical connection correspondence of the second UART interface of the arm processor of each transfering the letter module.The transmitting terminal of the modulator of the modulation /demodulation module of the first transfering the letter module is electrically connected the receiving terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder, the receiving terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module is electrically connected the transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder.
In the embodiment of the present invention, arm processor is STM32F103RET6 embedded processing chip.STM32F103RET6 embedded processing chip, based on Cotex-M3 kernel, has low-power consumption, processing speed is fast, peripheral hardware aboundresources, cost are low feature, is applicable to transfering the letter process completely.In the embodiment of the present invention, the peripheral circuit matched with STM32F103RET6 embedded processing chip comprises: clock generation circuit and RC reset circuit.Wherein, the output of clock generation circuit connects the clock input pin of STM32F103RET6 embedded processing chip, for it provides work clock; RC reset circuit connects the reset pin of STM32F103RET6 embedded processing chip, ensure its power on after program can start normal operation.STM32F103RET6 embedded processing chip is also furnished with JTAG DLL (dynamic link library), uses for online programming and debugging.
In the embodiment of the present invention, also audio frequency processing circuit is provided with in each transfering the letter module, first transfering the letter module audio frequency processing circuit be serially connected with the second short-wave radio set audio signal output end and first transfering the letter module arm processor the second UART interface receiving terminal between, and be serially connected with the second short-wave radio set audio signal input end and first transfering the letter module arm processor the second UART interface transmitting terminal between.The audio signal that the audio frequency processing circuit of the first transfering the letter module is used for the second short-wave radio set exports processes, and processes for the audio signal exported the arm processor of the first transfering the letter module.The process of Audio Signal Processing is by changing audio frequency signal amplitude (increase audio frequency signal amplitude, decay or carry out automatic growth control etc. to audio signal to audio signal) to the adjustment of corresponding potentiometer.The transfer the letter audio frequency processing circuit of module of the function and first of audio frequency processing circuit of the second transfering the letter module is similar.
In the embodiment of the present invention, each transfering the letter module voltage stabilizing circuit and Switching Power Supply, the wherein input access 13.8V direct current of voltage stabilizing circuit, when voltage stabilizing circuit works, 13.8V direct current is converted to 5V direct current, now, 5V direct current outwards exports by voltage stabilizing circuit, the output of voltage stabilizing circuit is electrically connected the input of Switching Power Supply and the feeder ear of corresponding modulation /demodulation module respectively, like this, voltage stabilizing circuit provides 5V direct current to the modulation /demodulation module of correspondence, and corresponding modulation /demodulation module just can normally work.Switching Power Supply is used for changing 5V direct current into 3.3V direct current, the output of this Switching Power Supply is electrically connected the feeder ear of corresponding level shifting circuit and the power end of corresponding arm processor respectively, and Switching Power Supply is used for providing working power respectively to the level shifting circuit of correspondence with corresponding arm processor.In the embodiment of the present invention, second shortwave circuit can export the direct current of 13.8V, 3rd shortwave circuit can export the direct current of 13.8V, now by the input of voltage stabilizing circuit corresponding for the electrical connection of the DC output end of the second shortwave circuit, by the input of voltage stabilizing circuit corresponding for the electrical connection of the DC output end of the 3rd shortwave circuit, the voltage stabilizing circuit of each transfering the letter module just can normally work.
In the embodiment of the present invention, when the first short-wave radio set will send signal to the 4th short-wave radio set, first short-wave radio set first the data that will send or voice signal by antenna wireless transmission to the second short-wave radio set, signal is given the first transfering the letter module and is processed by the second short-wave radio set, then the second transfering the letter module is sent in a wired fashion to by twisted-pair feeder, signal is given the 3rd short-wave radio set by the second transfering the letter module, and the 3rd short-wave radio set sends the 4th short-wave radio set to by antenna wireless again.The process of two transfering the letter modules to signal completes completely automatically, second short-wave radio set, the 3rd short-wave radio set and two transfering the letter modules can be positioned in unattended environment completely, such as: the top of small hill and two of bottom positions, or the position be in complex electromagnetic environment and away from another position (interval between two positions is no more than 5km) in this environment, two transfering the letters radio station (i.e. the second short-wave radio set and the 3rd short-wave radio set) can be placed respectively.In the embodiment of the present invention, two transfering the letter modules are key points that the present invention realizes signal transfering the letter, are main contents of the invention process, and other assemblies are just in order to verify that transfering the letter device realizes effect and requisite part.In the embodiment of the present invention, when the 4th short-wave radio set needs to send signal to the first short-wave radio set, carry out above-mentioned first short-wave radio set sends inverse process from signal to the 4th short-wave radio set.It should be noted that, communication between first short-wave radio set and the 4th short-wave radio set is actually and is realized as bridge by device of transferring the letter by the communication between the first short-wave radio set and the second short-wave radio set and the communication between the 3rd short-wave radio set and the 4th short-wave radio set again, therefore when the first short-wave radio set and the second short-wave radio set use some communication frequencys and speed, the 3rd short-wave radio set and the 4th short-wave radio set can use another communication frequency different from the former (i.e. the first short-wave radio set and the second short-wave radio set) and speed.
In the embodiment of the present invention, based on the above-mentioned transfering the letter device being applicable to short-wave radio set communication, also proposed a kind of transfering the letter method being applicable to short-wave radio set communication.With reference to Fig. 3, it is the transfering the letter method transfer letter data transmission schematic diagram being applicable to short-wave radio set communication of the present invention.With reference to Fig. 4, for of the present invention being applicable to receives and dispatches command schematic diagram in the transfering the letter method of short-wave radio set communication.This transfering the letter method being applicable to short-wave radio set communication comprises:
When the first short-wave radio set outwards sends radiofrequency signal, the second short-wave radio set receives the radiofrequency signal from the first short-wave radio set, and the second short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal.Audio signal is sent to the receiving terminal (being labeled as UART2_RX in figure 3) of the second UART interface of the arm processor of the first transfering the letter module by the second short-wave radio set, the arm processor of the first transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal (being labeled as UART4_TX in figure 3) of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the first transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the first transfering the letter module; The modulator of the modulation /demodulation module of the first transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the first transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the second transfering the letter module.
The demodulator of the modulation /demodulation module of the second transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module, the audio signal of reception is sent to the receiving terminal (being labeled as UART4_RX in figure 3) of the 4th UART interface of the arm processor of the second transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module, the arm processor of the second transfering the letter module is by the transmitting terminal (being labeled as UART2_TX in figure 3) of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, the audio signal of reception is sent to the audio signal input end of the 3rd short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the second transfering the letter module, the audio signal received is changed radiofrequency signal by the 3rd short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the 4th short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set.
When the 4th short-wave radio set outwards sends radiofrequency signal, the 3rd short-wave radio set receives the radiofrequency signal from the 4th short-wave radio set, and the 3rd short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal; Audio signal is sent to the receiving terminal of the second UART interface of the arm processor of the second transfering the letter module by the 3rd short-wave radio set, the arm processor of the second transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the second transfering the letter module; The modulator of the modulation /demodulation module of the second transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the first transfering the letter module.
The demodulator of the modulation /demodulation module of the first transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module; The audio signal of reception is sent to the receiving terminal of the 4th UART interface of the arm processor of the first transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module, the arm processor of the first transfering the letter module is by the transmitting terminal of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, and the audio signal of reception is sent to the audio signal input end of the second short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the first transfering the letter module; The audio signal received is changed radiofrequency signal by the second short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the first short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set.
When the second outside output audio signal of short-wave radio set, export the SLIP protocol data bag meeting RS-232 level simultaneously, transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that second short-wave radio set exports and useful data (transmits with the frame format of SLIP bag, SLIP is a kind of link layer transfer agreement, is widely used in the communication of asynchronous serial port.UART serial line interface receives at every turn or sends frame data, the instruction of control frame transmission has: request is sent out data command, terminates to send out data command, starts to receive data command, terminates to receive data command, allows to send out data command, forbidden sending out data command, and the instruction controlling short-wave radio set state has: send signal instruction, Received signal strength instruction.The level shifting circuit of the first transfering the letter module receives the SLIP protocol data bag of the second short-wave radio set output, the SLIP protocol data bag meeting RS-232 level is converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, the SLIP protocol data bag meeting Transistor-Transistor Logic level is sent to the receiving terminal (being labeled as UART1_RX in the diagram) of the first UART interface of the arm processor of the first transfering the letter module, in the SLIP protocol data bag that the arm processor of the first transfering the letter module receives at the receiving terminal of its first UART interface, extract the transmission signal instruction meeting Transistor-Transistor Logic level, the transmission signal instruction meeting Transistor-Transistor Logic level is sent to the transmitting terminal (being labeled as UART3_TX in the diagram) of its 3rd UART interface by the arm processor of described first transfering the letter module, and the transmission signal instruction meeting Transistor-Transistor Logic level is sent to the receiving terminal of the modulator of the modulation /demodulation module of the first transfering the letter module by the transmitting terminal of the 3rd UART interface of the arm processor of described first transfering the letter module, the modulator of the modulation /demodulation module of the first transfering the letter module is modulated the transmission signal instruction meeting Transistor-Transistor Logic level, the transmission signal instruction meeting Transistor-Transistor Logic level after modulation is sent to the demodulator of the modulation /demodulation module of described second transfering the letter module, the demodulator of the modulation /demodulation module of described second transfering the letter module carries out demodulation to the transmission signal instruction meeting Transistor-Transistor Logic level after modulation, the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation is sent to the receiving terminal (being labeled as UART3_RX in the diagram) of the 3rd UART interface of the arm processor of the second transfering the letter module, the transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation that the arm processor of the second transfering the letter module receives according to the receiving terminal of its 3rd UART interface, generation meets the Received signal strength instruction of Transistor-Transistor Logic level, the Received signal strength instruction meeting Transistor-Transistor Logic level is sent to the level shifting circuit of the second transfering the letter module by the arm processor of described second transfering the letter module by the transmitting terminal (being labeled as UART1_TX in the diagram) of its first UART interface, the Received signal strength instruction transformation meeting Transistor-Transistor Logic level is the Received signal strength instruction meeting RS-232 level by the level shifting circuit of the second transfering the letter module, and the Received signal strength instruction meeting RS-232 level is sent to the 3rd short-wave radio set, 3rd short-wave radio set according to Received signal strength instruction, receive from second transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal.
When the first transfering the letter module sends data to the second transfering the letter module, if the SLIP bag that the receiving terminal of the 4th UART interface of the arm processor of the second transfering the letter apparatus module receives is the data (useful data) that will transfer the letter, then first this SLIP bag buffer memory is got off, if the SLIP bag received is " starting to receive data " instruction, then first send a request by the transmitting terminal of the second UART interface of the arm processor of the second transfering the letter apparatus module and send out data command, until after receiving by the receiving terminal of the second UART interface of the arm processor of the second transfering the letter apparatus module the response allowing to send out data command, the SLIP bag got off by buffer memory is again sent one by one by the transmitting terminal of the second UART interface of the arm processor of the second transfering the letter apparatus module.In the transmitting procedure of data, when the receiving terminal of the second UART interface of the arm processor of the second transfering the letter apparatus module receive forbid sending out data command time, the transmission of temporary transient stopping SLIP bag, the SLIP bag buffer memory received gets off by the receiving terminal continuing through the 4th UART interface of the arm processor of the second transfering the letter apparatus module.When the receiving terminal of the 4th UART interface of the arm processor of the second transfering the letter module receives end receipts data command, illustrate that all SLIP packets are transmitted.
When the 3rd outside output audio signal of short-wave radio set, export the SLIP protocol data bag meeting RS-232 level, transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that the 3rd short-wave radio set exports simultaneously; The level shifting circuit of the second transfering the letter module receives the SLIP protocol data bag of the 3rd short-wave radio set output, the SLIP protocol data bag meeting RS-232 level is converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, and the SLIP protocol data bag meeting Transistor-Transistor Logic level is sent to the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module; In the SLIP protocol data bag that the arm processor of the second transfering the letter module receives at the receiving terminal of its first UART interface, extract the transmission signal instruction meeting Transistor-Transistor Logic level; The transmission signal instruction meeting Transistor-Transistor Logic level is sent to the transmitting terminal of its 3rd UART interface by the arm processor of described second transfering the letter module, and the transmission signal instruction meeting Transistor-Transistor Logic level is sent to the receiving terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by the transmitting terminal of the 3rd UART interface of the arm processor of the second transfering the letter module; The modulator of the modulation /demodulation module of the second transfering the letter module is modulated the transmission signal instruction meeting Transistor-Transistor Logic level, the transmission signal instruction meeting Transistor-Transistor Logic level after modulation is sent to the demodulator of the modulation /demodulation module of the first transfering the letter module, the demodulator of the modulation /demodulation module of the first transfering the letter module carries out demodulation to the transmission signal instruction meeting Transistor-Transistor Logic level after modulation, the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation is sent to the receiving terminal of the 3rd UART interface of the arm processor of the first transfering the letter module; The transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation that the arm processor of the first transfering the letter module receives according to the receiving terminal of its 3rd UART interface, generation meets the Received signal strength instruction of Transistor-Transistor Logic level; The Received signal strength instruction meeting Transistor-Transistor Logic level is sent to the level shifting circuit of the first transfering the letter module by the arm processor of the first transfering the letter module by the transmitting terminal of its first UART interface, the Received signal strength instruction transformation meeting Transistor-Transistor Logic level is the Received signal strength instruction meeting RS-232 level by the level shifting circuit of the first transfering the letter module, and the Received signal strength instruction meeting RS-232 level is sent to the second short-wave radio set by the level shifting circuit of the first transfering the letter module; Second short-wave radio set according to Received signal strength instruction, receive from first transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal.
When the receiving terminal of the 3rd UART interface of the receiving terminal of the first UART interface of the arm processor of the first transfering the letter module and the arm processor of the first transfering the letter module receives the transmission signal instruction meeting Transistor-Transistor Logic level simultaneously, the audio signal that the receiving terminal of the second UART interface receives by the arm processor of the first transfering the letter module is removed, the audio signal that the receiving terminal of the 4th UART interface receives by the arm processor of the first transfering the letter module is removed, until when only having a receiving terminal to receive transmission signal instruction in the receiving terminal of the 3rd UART interface of the arm processor of the receiving terminal of the first UART interface of the arm processor of the first transfering the letter module and the first transfering the letter module, stop corresponding audio signal reset procedure, transfering the letter functional rehabilitation is normal.
When the receiving terminal of the 3rd UART interface of the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module and the arm processor of the second transfering the letter module receives the transmission signal instruction meeting Transistor-Transistor Logic level simultaneously, the audio signal that the receiving terminal of the second UART interface receives by the arm processor of the second transfering the letter module is removed, the audio signal that the receiving terminal of the 4th UART interface receives by the arm processor of the second transfering the letter module is removed, until when only having a receiving terminal to receive transmission signal instruction in the receiving terminal of the 3rd UART interface of the arm processor of the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module and the second transfering the letter module, stop corresponding audio signal reset procedure, transfering the letter functional rehabilitation is normal.
In the embodiment of the present invention, the function of four groups of UART ports that each transfering the letter module is corresponding is different, for first transfering the letter module to second transfering the letter module transmission direction on, the function and second that the receiving terminal of the second UART interface of the arm processor of each transfering the letter module, the transmitting terminal of the 4th UART interface, the receiving terminal of the first UART interface, the transmitting terminal of the 3rd UART interface realize transfer the letter module to first transfer the letter module transmission direction on corresponding UART hold the function realized just contrary; Same transfering the letter module meets the application of both direction simultaneously, and two transfering the letter modules can exchange use, enhance the flexibility of application.It can thus be appreciated that what the present invention can realize transferring the letter automatically performs, direction controlling and collision detection and functional rehabilitation.
In the embodiment of the present invention, arm processor mainly completes judgement and the process of the reportedly defeated instruction of paired domination number, and to the buffer memory, detection, classification, conversion etc. of data, these are completed by the second UART interface and the 4th UART interface.To the judgement and the process that control the instruction that transmitting-receiving is changed, by carrying out collision detection to control the transmission of transfering the letter data to " sending out " simultaneously, these are completed by the first UART interface and the 3rd UART interface.Four UART interface collaborative works of each arm processor, are independent of each other.
In the embodiment of the present invention, the arm processor of each transfering the letter module is electrically connected with the light-emitting diode for indicating its operating state.Particularly, transmitting terminal and the receiving terminal of the first UART interface of the arm processor of each transfering the letter module are electrically connected with light-emitting diode respectively, light-emitting diode is used for the state of instruction transfering the letter device when receiving or send data in real time, when the transmitting terminal of the first UART interface of the arm processor of each transfering the letter module receives transmission signal instruction, corresponding light-emitting diode is shinny.When the receiving terminal of the first UART interface of the arm processor of each transfering the letter module receives Received signal strength instruction, corresponding light-emitting diode is shinny.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. one kind is applicable to the transfering the letter device of short-wave radio set communication, it is characterized in that, comprise: the first transfering the letter module, the second transfering the letter module, twisted-pair feeder and the first short-wave radio set are to the 4th short-wave radio set, described first short-wave radio set and the second short-wave radio set form two-way wireless communication and are connected, and described 3rd short-wave radio set forms two-way wireless communication with the 4th short-wave radio set and is connected; Described second short-wave radio set has audio signal output end and audio signal input end, and described 3rd short-wave radio set has audio signal output end and audio signal input end; Described first transfering the letter module is electrically connected audio signal output end and the audio signal input end of the second short-wave radio set respectively, and described second transfering the letter module is electrically connected audio signal output end and the audio signal input end of the 3rd short-wave radio set respectively;
Described each transfering the letter module comprises modulation /demodulation module, arm processor, described each modulation /demodulation module comprises demodulator and modulator, the modulator of each modulation /demodulation module has transmitting terminal and receiving terminal, the demodulator of each modulation /demodulation module has transmitting terminal and receiving terminal, and described arm processor has the first UART interface to the 4th UART interface; The audio signal output end of the short-wave radio set of the receiving terminal electrical connection correspondence of the second UART interface of the arm processor of described each transfering the letter module, the arm processor of described each transfering the letter module is used for by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, the receiving terminal of the modulator of the modulation /demodulation module that the transmitting terminal electrical connection of the 4th UART interface of the arm processor of described each transfering the letter module is corresponding; The receiving terminal of the 4th UART interface of the arm processor of the transmitting terminal electrical connection correspondence of the demodulator of described each modulation /demodulation module, the arm processor of described each transfering the letter module is used for the transmitting terminal of Signal transmissions to the second UART interface of the receiving terminal from its 4th UART interface, the audio signal input end of the short-wave radio set of the transmitting terminal electrical connection correspondence of the second UART interface of the arm processor of described each transfering the letter module;
The transmitting terminal of the modulator of the modulation /demodulation module of described first transfering the letter module is electrically connected the receiving terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder, the receiving terminal of the demodulator of the modulation /demodulation module of described first transfering the letter module is electrically connected the transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by twisted-pair feeder.
2. as claimed in claim 1 a kind of be applicable to short-wave radio set communication transfering the letter device, it is characterized in that, described each transfering the letter module also comprises level shifting circuit, and described level shifting circuit is for realizing the mutual conversion between RS-232 level and Transistor-Transistor Logic level;
Described second short-wave radio set is used for when outside output audio signal, exports the SLIP protocol data bag meeting RS-232 level, and transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that described second short-wave radio set exports; The level shifting circuit of described first transfering the letter module is for receiving the SLIP protocol data bag of the second short-wave radio set output, for the SLIP protocol data bag meeting RS-232 level being converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, for the SLIP protocol data bag meeting Transistor-Transistor Logic level being sent to the receiving terminal of the first UART interface of the arm processor of the first transfering the letter module; The arm processor of described first transfering the letter module is used for, in the SLIP protocol data bag received at the receiving terminal of its first UART interface, extracting the transmission signal instruction meeting Transistor-Transistor Logic level; The arm processor of described first transfering the letter module is used for the transmitting terminal transmission signal instruction meeting Transistor-Transistor Logic level being sent to its 3rd UART interface, the receiving terminal of the modulator of the modulation /demodulation module of the transmitting terminal electrical connection first transfering the letter module of the 3rd UART interface of the arm processor of described first transfering the letter module; The transmission signal instruction meeting Transistor-Transistor Logic level that the modulator of the modulation /demodulation module of the first transfering the letter module is used for receiving is modulated, for the transmission signal instruction meeting Transistor-Transistor Logic level after modulation being sent to the demodulator of the modulation /demodulation module of described second transfering the letter module, the demodulator of the modulation /demodulation module of described second transfering the letter module is used for the transmission signal instruction meeting Transistor-Transistor Logic level after to modulation and carries out demodulation, for the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation being sent to the receiving terminal of the 3rd UART interface of the arm processor of the second transfering the letter module; Second arm processor of transferring the letter module is used for the transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation received according to the receiving terminal of its 3rd UART interface, generates the Received signal strength instruction meeting Transistor-Transistor Logic level; The arm processor of described second transfering the letter module is used for the level shifting circuit Received signal strength instruction meeting Transistor-Transistor Logic level being sent to the second transfering the letter module by the transmitting terminal of its first UART interface, the level shifting circuit of described second transfering the letter module is used for the Received signal strength instruction transformation meeting Transistor-Transistor Logic level being the Received signal strength instruction meeting RS-232 level, and the level shifting circuit of described second transfering the letter module is used for the Received signal strength instruction meeting RS-232 level to be sent to the 3rd short-wave radio set; 3rd short-wave radio set be used for according to Received signal strength instruction, receive from second transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal;
Described 3rd short-wave radio set is used for when outside output audio signal, exports the SLIP protocol data bag meeting RS-232 level, and transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that described 3rd short-wave radio set exports; The level shifting circuit of described second transfering the letter module is for receiving the SLIP protocol data bag of the 3rd short-wave radio set output, for the SLIP protocol data bag meeting RS-232 level being converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, for the SLIP protocol data bag meeting Transistor-Transistor Logic level being sent to the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module; The arm processor of described second transfering the letter module is used for, in the SLIP protocol data bag received at the receiving terminal of its first UART interface, extracting the transmission signal instruction meeting Transistor-Transistor Logic level; The arm processor of described second transfering the letter module is used for the transmitting terminal transmission signal instruction meeting Transistor-Transistor Logic level being sent to its 3rd UART interface, the receiving terminal of the modulator of the modulation /demodulation module of the transmitting terminal electrical connection second transfering the letter module of the 3rd UART interface of the arm processor of described second transfering the letter module; The transmission signal instruction meeting Transistor-Transistor Logic level that the modulator of the modulation /demodulation module of the second transfering the letter module is used for receiving is modulated, for the transmission signal instruction meeting Transistor-Transistor Logic level after modulation being sent to the demodulator of the modulation /demodulation module of described first transfering the letter module, the demodulator of the modulation /demodulation module of described first transfering the letter module is used for the transmission signal instruction meeting Transistor-Transistor Logic level after to modulation and carries out demodulation, for the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation being sent to the receiving terminal of the 3rd UART interface of the arm processor of the first transfering the letter module; First arm processor of transferring the letter module is used for the transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation received according to the receiving terminal of its 3rd UART interface, generates the Received signal strength instruction meeting Transistor-Transistor Logic level; The arm processor of described first transfering the letter module is used for the level shifting circuit Received signal strength instruction meeting Transistor-Transistor Logic level being sent to the first transfering the letter module by the transmitting terminal of its first UART interface, the level shifting circuit of described first transfering the letter module is used for the Received signal strength instruction transformation meeting Transistor-Transistor Logic level being the Received signal strength instruction meeting RS-232 level, and the level shifting circuit of described first transfering the letter module is used for the Received signal strength instruction meeting RS-232 level to be sent to the second short-wave radio set; Second short-wave radio set be used for according to Received signal strength instruction, receive from first transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal.
3. as claimed in claim 1 a kind of be applicable to short-wave radio set communication transfering the letter device, it is characterized in that, the arm processor of described each transfering the letter module is electrically connected with the light-emitting diode for indicating its operating state.
4. be applicable to a transfering the letter method for short-wave radio set communication, based on a kind of transfering the letter device being applicable to short-wave radio set communication according to claim 1, it is characterized in that, comprising:
When the first short-wave radio set outwards sends radiofrequency signal, the second short-wave radio set receives the radiofrequency signal from the first short-wave radio set, and the second short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal; Audio signal is sent to the receiving terminal of the second UART interface of the arm processor of the first transfering the letter module by the second short-wave radio set, the arm processor of the first transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the first transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the first transfering the letter module; The modulator of the modulation /demodulation module of the first transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the first transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the second transfering the letter module;
The demodulator of the modulation /demodulation module of the second transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module; The audio signal of reception is sent to the receiving terminal of the 4th UART interface of the arm processor of the second transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the second transfering the letter module, the arm processor of the second transfering the letter module is by the transmitting terminal of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, and the audio signal of reception is sent to the audio signal input end of the 3rd short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the second transfering the letter module; The audio signal received is changed radiofrequency signal by the 3rd short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the 4th short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set;
When the 4th short-wave radio set outwards sends radiofrequency signal, the 3rd short-wave radio set receives the radiofrequency signal from the 4th short-wave radio set, and the 3rd short-wave radio set processes the radiofrequency signal received, and changes the radiofrequency signal of reception into audio signal; Audio signal is sent to the receiving terminal of the second UART interface of the arm processor of the second transfering the letter module by the 3rd short-wave radio set, the arm processor of the second transfering the letter module is by the Signal transmissions of the receiving terminal from its second UART interface to the transmitting terminal of the 4th UART interface, and the signal of reception is sent to the receiving terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by the transmitting terminal of the 4th UART interface of the arm processor of the second transfering the letter module; The modulator of the modulation /demodulation module of the second transfering the letter module is modulated the signal received, and is sent by the signal after modulation by its transmitting terminal; The transmitting terminal of the modulator of the modulation /demodulation module of the second transfering the letter module is by the receiving terminal of the signal of reception by the demodulator of the modulation /demodulation module of Double-strand transmission to the first transfering the letter module;
The demodulator of the modulation /demodulation module of the first transfering the letter module carries out demodulation process to the signal received, and the audio signal after demodulation is sent to the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module; The audio signal of reception is sent to the receiving terminal of the 4th UART interface of the arm processor of the first transfering the letter module by the transmitting terminal of the demodulator of the modulation /demodulation module of the first transfering the letter module, the arm processor of the first transfering the letter module is by the transmitting terminal of audio signal transmission to the second UART interface of the receiving terminal from its 4th UART interface, and the audio signal of reception is sent to the audio signal input end of the second short-wave radio set by the transmitting terminal of the second UART interface of the arm processor of the first transfering the letter module; The audio signal received is changed radiofrequency signal by the second short-wave radio set, and outwards sends changing the radiofrequency signal generated, and the first short-wave radio set receives the radiofrequency signal from the 3rd short-wave radio set.
5. as claimed in claim 4 a kind of be applicable to short-wave radio set communication transfering the letter method, it is characterized in that, described each transfering the letter module also comprises level shifting circuit, and described level shifting circuit is for realizing the mutual conversion between RS-232 level and Transistor-Transistor Logic level;
When the second outside output audio signal of short-wave radio set, export the SLIP protocol data bag meeting RS-232 level, transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that described second short-wave radio set exports simultaneously; The level shifting circuit of described first transfering the letter module receives the SLIP protocol data bag of the second short-wave radio set output, the SLIP protocol data bag meeting RS-232 level is converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, the SLIP protocol data bag meeting Transistor-Transistor Logic level is sent to the receiving terminal of the first UART interface of the arm processor of the first transfering the letter module; In the SLIP protocol data bag that the arm processor of described first transfering the letter module receives at the receiving terminal of its first UART interface, extract the transmission signal instruction meeting Transistor-Transistor Logic level; The transmission signal instruction meeting Transistor-Transistor Logic level is sent to the transmitting terminal of its 3rd UART interface by the arm processor of described first transfering the letter module, and the transmission signal instruction meeting Transistor-Transistor Logic level is sent to the receiving terminal of the modulator of the modulation /demodulation module of the first transfering the letter module by the transmitting terminal of the 3rd UART interface of the arm processor of described first transfering the letter module; The modulator of the modulation /demodulation module of the first transfering the letter module is modulated the transmission signal instruction meeting Transistor-Transistor Logic level, the transmission signal instruction meeting Transistor-Transistor Logic level after modulation is sent to the demodulator of the modulation /demodulation module of described second transfering the letter module, the demodulator of the modulation /demodulation module of described second transfering the letter module carries out demodulation to the transmission signal instruction meeting Transistor-Transistor Logic level after modulation, the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation is sent to the receiving terminal of the 3rd UART interface of the arm processor of the second transfering the letter module; The transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation that the arm processor of the second transfering the letter module receives according to the receiving terminal of its 3rd UART interface, generation meets the Received signal strength instruction of Transistor-Transistor Logic level; The Received signal strength instruction meeting Transistor-Transistor Logic level is sent to the level shifting circuit of the second transfering the letter module by the arm processor of described second transfering the letter module by the transmitting terminal of its first UART interface, the Received signal strength instruction transformation meeting Transistor-Transistor Logic level is the Received signal strength instruction meeting RS-232 level by the level shifting circuit of the second transfering the letter module, and the Received signal strength instruction meeting RS-232 level is sent to the 3rd short-wave radio set; 3rd short-wave radio set according to Received signal strength instruction, receive from second transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal;
When the 3rd outside output audio signal of short-wave radio set, export the SLIP protocol data bag meeting RS-232 level, transmission signal instruction drawn together by the SLIP protocol data handbag meeting RS-232 level that the 3rd short-wave radio set exports simultaneously; The level shifting circuit of the second transfering the letter module receives the SLIP protocol data bag of the 3rd short-wave radio set output, the SLIP protocol data bag meeting RS-232 level is converted to the SLIP protocol data bag meeting Transistor-Transistor Logic level, and the SLIP protocol data bag meeting Transistor-Transistor Logic level is sent to the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module; In the SLIP protocol data bag that the arm processor of the second transfering the letter module receives at the receiving terminal of its first UART interface, extract the transmission signal instruction meeting Transistor-Transistor Logic level; The transmission signal instruction meeting Transistor-Transistor Logic level is sent to the transmitting terminal of its 3rd UART interface by the arm processor of described second transfering the letter module, and the transmission signal instruction meeting Transistor-Transistor Logic level is sent to the receiving terminal of the modulator of the modulation /demodulation module of the second transfering the letter module by the transmitting terminal of the 3rd UART interface of the arm processor of the second transfering the letter module; The modulator of the modulation /demodulation module of the second transfering the letter module is modulated the transmission signal instruction meeting Transistor-Transistor Logic level, the transmission signal instruction meeting Transistor-Transistor Logic level after modulation is sent to the demodulator of the modulation /demodulation module of the first transfering the letter module, the demodulator of the modulation /demodulation module of the first transfering the letter module carries out demodulation to the transmission signal instruction meeting Transistor-Transistor Logic level after modulation, the transmission signal instruction meeting Transistor-Transistor Logic level after demodulation is sent to the receiving terminal of the 3rd UART interface of the arm processor of the first transfering the letter module; The transmission signal instruction meeting Transistor-Transistor Logic level after the demodulation that the arm processor of the first transfering the letter module receives according to the receiving terminal of its 3rd UART interface, generation meets the Received signal strength instruction of Transistor-Transistor Logic level; The Received signal strength instruction meeting Transistor-Transistor Logic level is sent to the level shifting circuit of the first transfering the letter module by the arm processor of the first transfering the letter module by the transmitting terminal of its first UART interface, the Received signal strength instruction transformation meeting Transistor-Transistor Logic level is the Received signal strength instruction meeting RS-232 level by the level shifting circuit of the first transfering the letter module, and the Received signal strength instruction meeting RS-232 level is sent to the second short-wave radio set by the level shifting circuit of the first transfering the letter module; Second short-wave radio set according to Received signal strength instruction, receive from first transfering the letter module modulation /demodulation module demodulator transmitting terminal demodulation after audio signal.
6. as claimed in claim 5 a kind of be applicable to short-wave radio set communication transfering the letter method, it is characterized in that, when the receiving terminal of the 3rd UART interface of the receiving terminal of the first UART interface of the arm processor of the first transfering the letter module and the arm processor of the first transfering the letter module receives the transmission signal instruction meeting Transistor-Transistor Logic level simultaneously, the audio signal that the receiving terminal of the second UART interface receives by the arm processor of the first transfering the letter module is removed, and the audio signal that the receiving terminal of the 4th UART interface receives by the arm processor of the first transfering the letter module is removed;
When the receiving terminal of the 3rd UART interface of the receiving terminal of the first UART interface of the arm processor of the second transfering the letter module and the arm processor of the second transfering the letter module receives the transmission signal instruction meeting Transistor-Transistor Logic level simultaneously, the audio signal that the receiving terminal of the second UART interface receives by the arm processor of the second transfering the letter module is removed, and the audio signal that the receiving terminal of the 4th UART interface receives by the arm processor of the second transfering the letter module is removed.
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| CN201410797021.0A Active CN104485985B (en) | 2014-12-18 | 2014-12-18 | Letter transfer device and letter transfer method suitable for short-wave radio station communication |
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| CN104485985B (en) | 2020-04-07 |
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