CN105263187A - Method for adjusting intensity of wirelessly-emitted signals in fuzzy self-adaptive manner - Google Patents
Method for adjusting intensity of wirelessly-emitted signals in fuzzy self-adaptive manner Download PDFInfo
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- CN105263187A CN105263187A CN201510584471.6A CN201510584471A CN105263187A CN 105263187 A CN105263187 A CN 105263187A CN 201510584471 A CN201510584471 A CN 201510584471A CN 105263187 A CN105263187 A CN 105263187A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
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Abstract
The invention relates to the wireless transmit-receive technical field under an internet of things environment, and especially discloses a method for adjusting intensity of wirelessly-emitted signals in a fuzzy self-adaptive manner. The method comprises the step: detecting the signal intensity of transmitted data when a transmitting device transmits data, wherein in data codes, one byte indicates the data intensity of the emitted data; and detecting the signal intensity of received data is also detected in a receiving device, ensuring that all signals are reliably received by the receiving device. According to the invention, feedback control is established between transmitting and receiving, and a self-adaptive fuzzy control method is adopted for adjusting the transmitting intensity in real time, so that the data accuracy is ensured, and the communication reliability is ensured.
Description
(1) technical field
The present invention relates to the wireless transmit-receive technology field be applied under environment of internet of things, particularly a kind of fuzzy self-adaption regulates the method for wireless transmission signal intensity.
(2) background technology
The current epoch are information ages, network is the main tie of this epoch information mutual communication, unlimited Internet of Things is the new things of networked information era, serve huge facilitation to the development of all trades and professions, it is for improving the productivity ratio of society and promoting that the progressive aspect of society will play effect difficult to the appraisal.
In the wireless communication procedure of Internet of Things, the loss of data is the bottlenecks that always annoying Development of Wireless Communications for a long time, signal strength signal intensity when the topmost reason of loss of data is Signal reception, cannot ensure that receiving circuit can receive information reliably, in order to effectively solve this difficult problem, various countries' researcher proposes various solution to this, but through practice test, is not very desirable.
Affect a lot of because have of received signal strength, send the direction of the intensity of signal, the medium of signal process, the degree of stability of medium, the distance of wireless transmission and reception, cycle of transmission and reception, transmission and reception, these all have either large or small impact to the reception of signal.Wireless transmission signal is sent through transmitting apparatus, (be air mostly through certain medium, sometimes there is wall, spread ripe, water etc., these media sometimes again may the impact of the factor such as wind-engaging, air-flow, cause medium instability), final arrival receiving equipment, receives through receiving equipment, completes a wireless communication process.The signal strength signal intensity sending signal is the most directly affecting for reception reliability, and different media is different to the degree of absorption of signal, just likely causes Signal reception off and on if medium is unstable.
(3) summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide a kind ofly to adjust flexibly, the fuzzy self-adaption of reliable communications regulates the method for wireless transmission signal intensity.
The present invention is achieved through the following technical solutions:
Fuzzy self-adaption regulates a method for wireless transmission signal intensity, comprises corresponding data transmitting equipment and data receiver, comprises the steps:
(1) data transmitting equipment is when sending data, and first encode, start byte is 0, and sequence code 0 compiles 127, namely sends 128 packets continuously, and the data amount check of each packet is according to the data definition will sent out below;
(2) send data first, the adjustment amount of adaptive fuzzy controller is the analog signal that 0, D/A conversion changes into the digital signal after coding fixed frequency, sends after amplifying circuit amplifies through transmitting antenna;
(3) after data receiver receives signal, first by the intensity of A/D converted received signal, then to the decoding data received, checking receives the correctness of data, according to the byte number of the data received, and fuzzy adaptive controller adjusting signal intensity, realize whole receptions of data, the data received convert to after analog signal through D/A converter, amplify, sent by sky bundle of lines data through amplifier;
(4) after data transmitting equipment receives and postbacks data, first detection signal strength, then verification sees whether receive correctly, according to the number of times receiving correct data, fuzzy adaptive controller regulates signal strength signal intensity, realizes the mutual detection of data sending device and data sink.
The present invention adopts wireless mode to build WLAN (wireless local area network), and the signal strength signal intensity in WLAN (wireless local area network) according to the reliability of Signal reception, can carry out Automatic adjusument, has both ensured the reliability of Signal reception, has ensured again the principle of minimum power consumption.
More excellent technical scheme of the present invention is:
In step (3), if the sequential encoding of the data received is 0 to 127, illustrate that signal is enough strong, need not regulate, then successively data encoding is postbacked to each data that receive, start byte is set to 1, the data sequence received is piled up the sequence code 1 postbacking data, the correct data amount check received is put into the byte receiving correct data number, be assumed to be n, the intensity of Received signal strength is put into the 4th byte, according to accuracy and the rule correctly having changed design Fuzzy tuning, if the data received are incomplete, just use fuzzy adaptive controller adjusting signal intensity.
In step (4), if can receive n correct data report, n is the number postbacking correct data in data, and n<128, illustrate and postback data receiver specifically all correctly, when fuzzy self-adaption regulates, equally also regulate 1%; If receive correct data number to be less than n, that is accuracy does not reach 100%, if accuracy is less than 100% for being more than or equal to 99%, fuzzy self-adaption adjuster just amplifies 1% the intensity of each signal automatically; If accuracy is more than or equal to 97% and is less than 99%, adjuster amplifies 2% signal strength signal intensity; If accuracy is more than or equal to 95% and is less than 97%, adjuster amplifies 4% signal strength signal intensity; If accuracy is less than 95%, adjuster amplifies 6% signal strength signal intensity.
Radio local network transmitting data often there will be the phenomenon of loss of data; occur that the reason of this phenomenon is due in data transmission procedure; due to a variety of causes; cause and occur the phenomenon generation that signal is at times strong and at other times weak in the process of transmission; time signal is strong, receiving terminal just can accurately Received signal strength, and time signal is weak, receiving terminal is with regard to None-identified data-signal; cause reception mistake, or loss of data.The present invention detects the signal strength signal intensity sending data when sending data at transmitting apparatus, in data encoding, there is a byte representative to send the intensity data of data, in receiving equipment, also detect the signal strength signal intensity receiving data, signal all received equipment reliable receptions must be ensured.In the coding sending data, there is the sequence code of a byte representative data, sequence code is 0-127, and after sending 128 data, transmitting apparatus wait-receiving mode equipment postbacks data, receiving equipment judges check code and sequence code after receiving data, if correctly just postback data, postback in the coding of data, have the correct sequence code received, receive the signal strength signal intensity of data, also have check code.If transmitting apparatus transmitting apparatus does not receive letter in reply after 128 numbers are sent 10 seconds, just think that all Signal reception are failed.The start byte sending the data that data send is 0, and the start byte of the data that receiving equipment postbacks is 1.Transmitting apparatus receives the data message postbacked, and sends failed phenomenon generation if had, and starts fuzzy adaptivecontroller adjustment D/A immediately and converts output valve, improve the intensity transmitted.Until make the data of transmission all can reliable reception.The rule of Fuzzy tuning is designed according to accuracy and accuracy rate of change.
The present invention establishes FEEDBACK CONTROL between transmitting and receiving, and adopt the adjustment emissive porwer that adaptive fuzzy control method is real-time, this measure can ensure the correctness of data, ensure that the reliability of communication.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is operating procedure schematic diagram of the present invention;
Fig. 2 is the view that the present invention sends data encoding;
Fig. 3 is the view that the present invention postbacks data encoding.
(5) embodiment
With reference to Figure of description, following explanation is done to the present invention.Concrete operations are: when transmitting apparatus sends data, first encode, start byte is 0, and sequence code 0 compiles 127, namely send 128 packets continuously, the data amount check of each packet is according to the data definition will sent out below, and for vegetable greenhouse booth checkout equipment, the data amount check that send out is 4, data 1 are the temperature of air in warmhouse booth, data 2 are the humidity of air in warmhouse booth, and data 3 are the temperature of warmhouse booth soil, and data 4 are the humidity of warmhouse booth soil.Last byte is CRC check.Send data first, the adjustment amount of adaptive fuzzy controller is 0.D/A conversion, the digital signal after coding, changes into the analog signal of fixed frequency.Send through transmitting antenna after amplifying circuit amplifies.
After reception antenna receives signal, first by the intensity of A/D transition detection Received signal strength, then to the decoding data received, verify the correctness receiving data.If the sequence code of the data received is 0 to 127,128 packets namely sent can correctly receive, and illustrate that signal is enough strong, need not regulate.Then postback data encoding successively to each data that receive, start byte is set to 1, the data sequence received is piled up the sequence code 1 postbacking data, being put into the byte receiving correct data number, being assumed to be n receiving the correct data amount check received.The intensity of Received signal strength, be put into the 4th byte.The rule of Fuzzy tuning is designed according to accuracy and accuracy rate of change, if the data received are incomplete, just use fuzzy adaptive controller adjusting signal intensity, if accuracy is less than 100% for being more than or equal to 99%, if it is 100% that fuzzy self-adaption adjuster just receives data accuracy the intensity multiplication factor of each signal from 2% to-1%(automatically, the adjusting strength of fuzzy self-adaption adjuster is 0%); If accuracy is more than or equal to 98% and is less than 99%, adjuster signal strength signal intensity multiplication factor from 3% to-2%; If accuracy is more than or equal to 96% and is less than 98%, adjuster signal strength signal intensity multiplication factor from 4% to 0%; If accuracy is less than 96%, adjuster signal strength signal intensity multiplication factor from 5% to 1%.Convert to after analog signal through D/A converter, amplify through amplifier, sent by sky bundle of lines data.
After reception antenna receives the data postbacked, first detection signal strength, then verification sees whether receive correctly, if (n is the number postbacking correct data in data to receive n correct data report, and n<128), illustrate that to postback data receiver specifically all correct, equally also 1% is regulated when fuzzy self-adaption regulates, if receive correct data number to be less than n, that is accuracy does not reach 100%, if accuracy is less than 100% for being more than or equal to 99%, if fuzzy self-adaption adjuster just amplifies 1%(reception data the intensity of each signal automatically strive for that rate is 100%, the adjusting strength of fuzzy self-adaption adjuster is 0%), if accuracy is more than or equal to 97% and is less than 99%, adjuster amplifies 2% signal strength signal intensity, if accuracy is more than or equal to 95% and is less than 97%, adjuster amplifies 4% signal strength signal intensity, if accuracy is less than 95%, adjuster amplifies 6% signal strength signal intensity.Such transmitting terminal and receiving terminal are detecting mutually the data sent, the intensity of conditioning signal that can be real-time always.
The fuzzy if-then rules table applied in the present invention is:
This wireless transmission platform improves the reliability that data transmit, and ensure that communication qualification rate, has expanded application and the applications distances of radio communication.
Claims (3)
1. the method for a fuzzy self-adaption adjustment wireless transmission signal intensity, comprise corresponding data transmitting equipment and data receiver, it is characterized by, comprise the steps: that (1) data transmitting equipment is when sending data, first encode, start byte is 0, and sequence code 0 compiles 127, namely send 128 packets continuously, the data amount check of each packet is according to the data definition will sent out below; (2) send data first, the adjustment amount of adaptive fuzzy controller is the analog signal that 0, D/A conversion changes into the digital signal after coding fixed frequency, sends after amplifying circuit amplifies through transmitting antenna; (3) after data receiver receives signal, first by the intensity of A/D converted received signal, then to the decoding data received, checking receives the correctness of data, according to the byte number of the data received, and fuzzy adaptive controller adjusting signal intensity, realize whole receptions of data, the data received convert to after analog signal through D/A converter, amplify, sent by sky bundle of lines data through amplifier; (4) after data transmitting equipment receives and postbacks data, first detection signal strength, then verification sees whether receive correctly, according to the number of times receiving correct data, fuzzy adaptive controller regulates signal strength signal intensity, realizes the mutual detection of data sending device and data sink.
2. fuzzy self-adaption according to claim 1 regulates the method for wireless transmission signal intensity, it is characterized in that: in step (3), if the sequential encoding of the data received is 0 to 127, illustrate that signal is enough strong, need not regulate, then successively data encoding is postbacked to each data that receive, start byte is set to 1, the data sequence received is piled up the sequence code 1 postbacking data, the correct data amount check received is put into the byte receiving correct data number, be assumed to be n, the intensity of Received signal strength is put into the 4th byte, according to accuracy and the rule correctly having changed design Fuzzy tuning, if the data received are incomplete, just use fuzzy adaptive controller adjusting signal intensity.
3. fuzzy self-adaption according to claim 1 regulates the method for wireless transmission signal intensity, it is characterized in that: in step (4), if n correct data report can be received, n is the number postbacking correct data in data, and n<128, illustrate and postback data receiver specifically all correctly, when fuzzy self-adaption regulates, equally also regulate 1%; If receive correct data number to be less than n, that is accuracy does not reach 100%, if accuracy is less than 100% for being more than or equal to 99%, fuzzy self-adaption adjuster just amplifies 1% the intensity of each signal automatically; If accuracy is more than or equal to 97% and is less than 99%, adjuster amplifies 2% signal strength signal intensity; If accuracy is more than or equal to 95% and is less than 97%, adjuster amplifies 4% signal strength signal intensity; If accuracy is less than 95%, adjuster amplifies 6% signal strength signal intensity.
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Cited By (2)
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| CN107800798A (en) * | 2017-01-24 | 2018-03-13 | 问众智能信息科技（北京）有限公司 | A kind of optimization method and system of In-vehicle networking communication |
| CN112385184A (en) * | 2018-07-11 | 2021-02-19 | 弗瑞柏私人有限公司 | Scanning device for detecting start byte in high frequency serial data stream |
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| WO2007069140A2 (en) * | 2005-12-14 | 2007-06-21 | Nxp B.V. | Method and rfid reader for communication via a radio channel |
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Application publication date: 20160120 |