CN111327347A - Anti-interference information processing system and method based on digital frequency modulation and encryption technology - Google Patents
Anti-interference information processing system and method based on digital frequency modulation and encryption technology Download PDFInfo
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- CN111327347A CN111327347A CN201910534330.1A CN201910534330A CN111327347A CN 111327347 A CN111327347 A CN 111327347A CN 201910534330 A CN201910534330 A CN 201910534330A CN 111327347 A CN111327347 A CN 111327347A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
Abstract
The invention belongs to the technical field of communication information anti-interference, and discloses an anti-interference information processing system and method based on digital frequency modulation and encryption technology, wherein an instruction issuing terminal: the main control module is connected with the main control module and used for issuing pairing and power regulation instructions; the main control module: the main control chip A9101 is used for receiving the instruction issued by the instruction issuing terminal and executing corresponding operation; the receiving terminal: and the voice receiving module is connected with the main control module and is used for receiving the transmitted voice of the instruction terminal by using the wireless earphone. The instruction issuing terminal is used for issuing pairing and power adjusting instructions; the main control module receives an instruction issued by the instruction issuing terminal and executes corresponding operation; the receiving terminal is used for answering the voice transmitted by the instruction terminal by using the wireless earphone. The invention effectively prevents the problem of same frequency interference in the communication process, and simultaneously, a plurality of coexisting stations can not be listened by channel crossing, and the same frequency interference can avoid automatic frequency hopping, so that the communication can not be influenced.
Description
Technical Field
The invention belongs to the technical field of anti-interference of fixed-frequency communication information, and particularly relates to an anti-interference information processing system and method based on digital frequency modulation and encryption technologies.
Background
Currently, the closest prior art: the intelligent connection WUS commentator of the existing equipment in the market adopts a fixed-frequency fixed communication mode, multiple devices coexist and need to manually set different communication frequencies, however, scenic spot guides are numerous, and the defect is that the problem of listening to the devices with the same frequency is always caused.
The prior art is point-to-point communication, information can be received only by the same frequency point, and the communication has no privacy and is easy to interfere with each other.
The prior art is a fixed single communication mode, and can only be adjusted manually when interference problems occur. Manual adjustment requires simultaneous adjustment of tour guides and tourists, which affects the experience of the tourists and wastes time.
In summary, the problems of the prior art are as follows:
the existing tour guide machine or the existing explanation machine adopts a communication mode with fixed frequency, a plurality of tour guide machines coexist, different communication frequencies need to be manually set, and the problem of listening to the tour guide machines with the same frequency is easy to occur; meanwhile, the information can be received with the same frequency points, and the listening is easy to talk; and can only be adjusted manually when interference problems are encountered.
The difficulty of solving the technical problems is as follows:
the problem of the prior art is solved, screen-jumping communication needs to be achieved, however, data receiving is incomplete under strong interference of screen-jumping, a receiver needs to conduct cyclic search in the whole frequency period, no sound is transmitted out in the search period, time is consumed for a long time, and experience of tourists is affected.
The significance of solving the technical problems is as follows: the problem of frequency hopping is solved, not only is the frequency hopping interfered, but also the voice communication is not interrupted during the frequency hopping, the listening experience of a user is not influenced, and the technical key for solving the frequency hopping is mainly realized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an anti-interference information processing system and method based on digital frequency modulation and encryption technology.
The invention is realized in this way, an anti-interference information processing system based on digital frequency modulation and encryption technology, the anti-interference information processing system based on digital frequency modulation and encryption technology includes:
an instruction issuing terminal: the main control module is connected with the main control module and used for issuing pairing and power regulation instructions;
the main control module: the main control chip A9101 is used for receiving the instruction issued by the instruction issuing terminal and executing corresponding operation;
the receiving terminal: and the voice receiving module is connected with the main control module and is used for receiving the transmitted voice of the instruction terminal by using the wireless earphone.
Further, the main control module comprises:
a command receiving unit: the system comprises a pairing unit, a grading feedback unit, a power and channel setting unit and a channel setting unit, wherein the pairing unit is used for pairing a command issued by a command issuing terminal;
a pairing unit: the method is used for establishing a flow feedback mechanism to complete pairing based on the ACK code value issued by A9101;
power and channel setting unit: the method is used for controlling the power magnitude based on the self-contained power setting value of A9101 and setting a channel.
Further, the anti-interference information processing system based on digital frequency modulation and encryption technology further comprises:
the method comprises the steps of establishing the contact between a command lower terminal and a receiving terminal in a serial port mode receiving and sending confirmation mode, and realizing the communication between the command sending terminal and the receiving terminal by adopting a digital automatic frequency hopping technology and a pairing encryption mode.
Another object of the present invention is to provide an anti-interference information processing method based on digital frequency modulation and encryption technology for implementing the anti-interference information processing system based on digital frequency modulation and encryption technology, wherein the anti-interference information processing method based on digital frequency modulation and encryption technology comprises:
firstly, a terminal issues corresponding pairing, power and channel adjusting instructions;
step two, the A9101 main control chip receives a terminal instruction, establishes a flow feedback mechanism based on an ACK code value issued by A9101 to complete pairing, and simultaneously controls the power based on a power setting value carried by A9101 and sets a channel;
and step three, the interpreter utilizes the terminal to interpret, sound is processed through the sound card in the terminal, ambient noise is eliminated, and the user utilizes the wireless earphone based on the UHF voice communication module to carry out voice transmission to answer the interpretation.
Further, the frequency hopping mode of the anti-interference information processing method based on the digital frequency modulation and encryption technology is as follows: the 466-503MHz channel is divided into 36 channels, and the 36 channels are combined according to the interval channels to carry out the frequency hopping from time to time.
Further, the encryption mode of the anti-interference information processing method based on the digital frequency modulation and encryption technology is as follows: the communication adopts a group handshake protocol mode, the tour guide machine issues a paired passenger plane ID number and a communication channel, the passenger plane identification is matched with the ID of the passenger plane, after matching, information is replied to the tour guide machine for confirmation, a set channel issued by the tour guide machine is entered, and the communication is established; the data stream is communicated under a 3-layer data encrypted channel comprising the guest machine ID, the tour guide machine ID and a communication channel.
The invention also aims to provide an information data processing terminal for realizing the anti-interference information processing method based on the digital frequency modulation and encryption technology.
Another object of the present invention is to provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to execute the above mentioned interference-free information processing method based on digital frequency modulation and encryption technology.
In summary, the advantages and positive effects of the invention are:
the invention provides a method for setting an encryption anti-interference system for the existing wireless communication, which adopts a digital frequency hopping technology and an encryption technology to effectively prevent the problem of same-frequency interference in the communication process, and simultaneously, a plurality of receivers coexist without listening to a channel, and can automatically hop and avoid when encountering the interference of the same frequency, so that the communication is not influenced, and even if the receivers of the same frequency are adopted, the data sent by an explanation device can not be heard.
The invention realizes encryption by a pairing mode, connection can be carried out only by the confirmation of an instruction issuing terminal, and a proprietary communication mode is established by setting a communication channel after connection; meanwhile, different communication powers can be set, and mutual interference among the devices can be effectively reduced in a dense space.
When the explanation work of the interpreter-tourist one-to-many is carried out in the scenic spot with dense crowds, the interpreter issues the terminal explanation through the instruction of the invention, and the tourist answers through the wireless earphone, so that the explanation quality is improved, and the listening is avoided; meanwhile, the wireless earphone utilizes the UHF voice communication module to carry out voice transmission, so that the problem of interference in a complex venue is avoided; the inside processing to sound through the sound card of explanation machine eliminates the surrounding environment noise, and the explanation sound is more clear.
In a complex environment of a scenic spot, the interference of communication can be realized without interruption by adopting a frequency hopping technology, but in practical application, after wireless communication receives interference, due to instability of data transmission in the air, a receiver cannot receive complete information, so that frequency hopping cannot be automatically butted after the communication is interrupted, cyclic search needs to be carried out one by one, certain time is consumed, and the experience of a receiving end can be influenced. The screen hopping mode adopted by the invention can realize frequency hopping communication in real time, and communication interruption can not occur, thereby improving user experience.
The invention is a semi-closed loop detection system in practical use, can realize screen hopping pairing and solves the problem of interference cross frequency of open communication.
| Prior Art | The present technology | |
| Communication frequency point | UHF868MHZ | UHF433MHZ |
| Communication distance | Poor diffraction ability | Strong diffraction ability |
| Communication method | Fixed frequency | Frequency hopping |
| Frequency modulation mode | Hand operated | Automatic |
| Feedback evaluation | Is free of | Is provided with |
| Data upload | Is free of | Is provided with |
| Positioning mode | Is free of | With GPS and Bluetooth positioning |
| Monitoring function | Is free of | Can listen in |
| Listening mode | Can receive at the same frequency | Need to be paired to receive |
| Photographing/recording | Is free of | With front and rear cameras |
Drawings
Fig. 1 is a schematic structural diagram of an anti-interference information processing system based on digital frequency modulation and encryption technologies according to an embodiment of the present invention;
in the figure: 1. an instruction issuing terminal; 2. a main control module; 3. a receiving terminal; 4. a command receiving unit; 5. a pairing unit; 6. a power and channel setting unit.
Fig. 2 is a flowchart of an anti-interference information processing method based on digital frequency modulation and encryption technologies according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an anti-interference information processing method based on digital frequency modulation and encryption technologies according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an anti-interference information processing system based on digital frequency modulation and encryption technology provided in an embodiment of the present invention specifically includes:
the system comprises an instruction issuing terminal 1, a main control module 2 and a receiving terminal 3;
the instruction issuing terminal 1: the main control module 2 is connected and used for issuing pairing and power regulation instructions;
and (3) the main control module 2: the main control chip A9101 is connected with the instruction issuing terminal 1 and the receiving terminal 3 and used for receiving the instruction issued by the instruction issuing terminal and executing corresponding operation;
the receiving terminal 3: and the main control module 2 is connected with the wireless earphone and is used for answering the voice transmitted by the instruction terminal.
The main control module 2 provided by the embodiment of the present invention specifically includes:
the main control module 2 is an A9101 main control chip;
the A9101 main control chip specifically includes: a command receiving unit 4, a pairing unit 5, a power and channel setting unit 6;
the command receiving unit 4: the device is used for receiving the instruction issued by the instruction issuing terminal 1 and calling the pairing unit 5 and the power and channel setting unit 6 respectively to complete different instruction operations based on the received instruction;
the pairing unit 5: the method is used for establishing a flow feedback mechanism to complete pairing based on the ACK code value issued by A9101;
power and channel setting unit 6: the method is used for controlling the power magnitude based on the self-contained power setting value of A9101 and setting a channel.
The anti-interference information processing system based on the digital frequency modulation and encryption technology provided by the embodiment of the invention further comprises:
the method comprises the steps of establishing the contact between a command lower terminal and a receiving terminal in a serial port mode receiving and sending confirmation mode, and realizing the communication between the command sending terminal and the receiving terminal by adopting a digital automatic frequency hopping technology and a pairing encryption mode.
As shown in fig. 2 to fig. 3, the method for processing anti-interference information based on digital frequency modulation and encryption technology according to the embodiment of the present invention specifically includes:
s101, a terminal issues corresponding pairing, power and channel adjusting instructions;
s102, the A9101 main control chip receives a terminal instruction, establishes a flow feedback mechanism based on an ACK code value issued by A9101 to complete pairing, controls the power based on a power setting value of A9101 and sets a channel;
s103, the interpreter utilizes the terminal to interpret, sound is processed through the sound card in the terminal, ambient noise is eliminated, and the user utilizes the wireless earphone based on the UHF voice communication module to conduct voice transmission to answer the interpretation.
A frequency hopping mode: the current 466-503MHZ is divided into 36 frequency channels, and the 36 frequency channels are combined according to interval frequency channels to perform frequency hopping from time to time, for example: (1-channel, actual frequencies 467,477, 487,497,503MHz) are combined to make the communication frequency hopping in the whole frequency band, so that the device will not interfere unless the whole 466-503MHz is interfered, and the frequency hopping communication will not be interfered when the device is in the frequency band.
An encryption mode: the communication adopts a group handshake protocol mode, the tour guide machine issues a paired passenger plane ID number and a communication channel, the passenger plane identification is matched with the ID of the passenger plane, after matching, information is replied to the tour guide machine for confirmation, and a set channel issued by the tour guide machine is entered to establish communication. The data stream is thus communicated over a 3-layer data encrypted channel containing the guest machine ID, the leader ID and the communication channel.
The elimination of ambient noise adopts a mature DSPHD5155D audio noise reduction chip.
The technical solution of the present invention is further described with reference to the following specific embodiments.
Example 1:
the invention adopts the digital frequency hopping technology and the encryption technology, effectively prevents the problem of same frequency interference in the communication process, simultaneously, a plurality of stations coexist without listening in a channel, and the communication is not influenced because the frequency hopping is automatically avoided when the same frequency interference occurs. And even a receiver using the same frequency cannot hear the data transmitted from the interpretation apparatus.
1. The invention is compared with the prior art:
(1) the prior art is a point-to-point communication, and information can be received only by the same frequency point.
The invention can carry out communication through pairing, power setting and channel setting. The invention realizes encryption by a pairing mode, and connection can be carried out only by confirmation of the tour guide machine. After connection, a proprietary communication mode is established by setting a communication channel. The invention can set different communication powers at the same time, and can effectively reduce the mutual interference among the devices in the dense space.
The invention relates to half-duplex communication software, which can upload evaluation information to a tour guide machine through paired tourist machines. The communication establishes the contact through the mode of serial port mode receiving and sending confirmation, and a unique and effective feedback mechanism is provided, so that the effective information and the accuracy of the information are effectively ensured. Meanwhile, uncertain errors and transmission error information in the transmission process are effectively transmitted to the tour guide machine, so that the accuracy of accurate analysis and evaluation in the evaluation process can be conveniently developed and collected.
(2) The prior art is a fixed single communication mode, and can only be adjusted in a manual mode when encountering interference problems, and meanwhile, information cannot be fed back.
The invention adopts the communication mode of automatic frequency hopping, can automatically avoid interference and does not influence communication. Meanwhile, evaluation information of the tourist machine can be collected, and the explanation process of the tour guide is evaluated.
The invention mainly solves the technical problems that interference is generated in the communication process, external noise cannot be eliminated, feedback of tourists cannot be collected, and the tour guide is evaluated.
(3) The technical key point of the invention is the realization of communication frequency hopping and the realization of evaluation feedback. In a complex environment of a scenic spot, the interference of communication can be realized without interruption by adopting a frequency hopping technology, but in practical application, after wireless communication receives interference, due to instability of data transmission in the air, a receiver cannot receive complete information, so that frequency hopping cannot be automatically butted after the communication is interrupted, cyclic search needs to be carried out one by one, certain time is consumed, and the experience of a receiving end can be influenced.
The screen hopping mode adopted by the invention can realize frequency hopping communication in real time, and communication interruption can not occur, thereby improving user experience.
2. The working process of the invention is as follows:
the invention issues a pairing instruction through the tour guide machine, and the pairing instruction establishes a flow feedback mechanism through an ACK code value issued by the chip A9101 to complete pairing. In actual use, the system is a semi-closed loop detection system, screen hopping pairing can be achieved, and the problem of interference cross frequency of open communication is solved. After the pairing is completed, evaluation acquisition can be executed, and the obtained scores are returned through the transceiving conversion function of A9101, so that the user feedback mechanism is effectively improved.
And power setting, wherein the software directly calls the power setting value of the chip by issuing a corresponding command code, so that the control of the power can be realized, and the problem of coexistence of dense spaces is effectively solved.
3. The technical scheme of the invention brings beneficial effects
The invention can avoid communication interference under the condition that 5 tour guides have the same channel. The test method comprises the following steps: the same channel and different host IDs of the tour guides are set, and the reception of the tourists is not interfered mutually.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An anti-interference information processing system based on digital frequency modulation and encryption technology, characterized in that the anti-interference information processing system based on digital frequency modulation and encryption technology comprises:
the instruction issuing terminal is connected with the main control module and used for issuing pairing and power adjusting instructions;
the main control module is connected with the instruction issuing terminal and the receiving terminal and used for receiving the instruction issued by the instruction issuing terminal based on the main control chip A9101 and executing corresponding operation;
and the receiving terminal is connected with the main control module and is used for answering the voice transmitted by the instruction terminal by using the wireless earphone.
2. The system according to claim 1, wherein the host module further comprises:
the command receiving unit is used for receiving the command issued by the command issuing terminal and respectively calling the pairing unit, the grading feedback unit and the power and channel setting unit to complete different command operations based on the received command;
the pairing unit is used for establishing a flow feedback mechanism based on the ACK code value issued by A9101 to complete pairing;
and the power and channel setting unit is used for controlling the power based on the power setting value of the A9101 and setting the channel.
3. The digital FM and encryption based tamper resistant information processing system of claim 1, wherein said digital FM and encryption based tamper resistant information processing system further comprises:
the method comprises the steps of establishing the contact between a command lower terminal and a receiving terminal in a serial port mode receiving and sending confirmation mode, and realizing the communication between the command sending terminal and the receiving terminal by adopting a digital automatic frequency hopping technology and a pairing encryption mode.
4. A digital fm and encryption technology based interference resistant information processing method for executing the digital fm and encryption technology based interference resistant information processing system of claim 1, wherein the digital fm and encryption technology based interference resistant information processing method comprises:
firstly, a terminal issues corresponding pairing, power and channel adjusting instructions;
step two, the A9101 main control chip receives a terminal instruction, establishes a flow feedback mechanism based on an ACK code value issued by A9101 to complete pairing, and simultaneously controls the power based on a power setting value carried by A9101 and sets a channel;
and step three, the interpreter utilizes the terminal to interpret, sound is processed through the sound card in the terminal, ambient noise is eliminated, and the user utilizes the wireless earphone based on the UHF voice communication module to carry out voice transmission to answer the interpretation.
5. The method according to claim 4, wherein the anti-interference information processing method based on digital frequency modulation and encryption technology comprises a frequency hopping mode: the 466-503MHz channel is divided into 36 channels, and the 36 channels are combined according to the interval channels to carry out the frequency hopping from time to time.
6. The method according to claim 4, wherein the anti-interference information processing method based on digital frequency modulation and encryption technology comprises an encryption mode: the communication adopts a group handshake protocol mode, the tour guide machine issues a paired passenger plane ID number and a communication channel, the passenger plane identification is matched with the ID of the passenger plane, after matching, information is replied to the tour guide machine for confirmation, a set channel issued by the tour guide machine is entered, and the communication is established; the data stream is communicated under a 3-layer data encrypted channel comprising the guest machine ID, the tour guide machine ID and a communication channel.
7. An information data processing terminal for implementing the anti-interference information processing method based on digital frequency modulation and encryption technology according to any one of claims 4 to 6.
8. A computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method for tamper-resistant information processing based on digital frequency modulation and encryption as claimed in any one of claims 4 to 6.
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| CN101178867A (en) * | 2006-11-09 | 2008-05-14 | 上海真灼电子技术有限公司 | Electronic tour guide system used for tour community |
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