Inductive coupling transmission system is an important measurement device for acquiring and transmitting marine environmental information.However,low transmission rate cannot meet the current demand for large data tra...Inductive coupling transmission system is an important measurement device for acquiring and transmitting marine environmental information.However,low transmission rate cannot meet the current demand for large data transmission in marine environment detection at home.In order to improve the transmission performance of the system in practical communication system,optimizing the design by directly changing the circuit parameters is time-consuming and expensive.Therefore,a set of inductive coupling transmission channel analysis system is designed based on virtual instrument to improve the transmission rate and reliability of inductive coupling transmission system.The bit error rate of channel system at different frequency and noise levels are tested by using three kinds of digital modulation mode including amplitude shift keying(ASK),frequency shift keying(FSK)and differential phase shift keying(DPSK),taking square wave and sine wave as a carrier.Finally,the sine wave is selected to be carrier signal and DPSK is chosen to be modulation mode.The reliable transmission of signal with the error rate less than0.005and the transmission rate of9600bps,at the noise level of-10dB,is realized and verified by the debugging circuit experiments with multi-nodes in the laboratory.The study provides an important experimental evidence for improving signal transmission reliability of inductive coupling transmission system.展开更多
（Objective）To strengthen the effect of packaging design, extend the idea of modem design, grope new methods of packaging visual information design.（Methods）Used 4 methods： literature summarizing, market researchi...（Objective）To strengthen the effect of packaging design, extend the idea of modem design, grope new methods of packaging visual information design.（Methods）Used 4 methods： literature summarizing, market researching, theoretical analyzing and Practice verifying, and contrasted the application method and effect of a variety of packaging materials comprehensively, studied in-depth on the rules of information transmission in package.（Results）Expound the aesthetic forms, such as skin texture, texture and color, etc. of various modem packaging paper, give a comment of the development status and functionality changes of modem package in China, Make the characteristic of packaging visual aesthetic and information dissemination clearly, put forward the 4-steps method of packaging design with Paper form, and predict its development trend.（Conclusion）The paper material has profound aesthetic connotation,it will has a promoting effect on visual information transmission if it is applied cleverly in packaging design. It＇s application prospects can be very Wide.展开更多
基金National Natural Science Foundation of China(No.41506122)
文摘Inductive coupling transmission system is an important measurement device for acquiring and transmitting marine environmental information.However,low transmission rate cannot meet the current demand for large data transmission in marine environment detection at home.In order to improve the transmission performance of the system in practical communication system,optimizing the design by directly changing the circuit parameters is time-consuming and expensive.Therefore,a set of inductive coupling transmission channel analysis system is designed based on virtual instrument to improve the transmission rate and reliability of inductive coupling transmission system.The bit error rate of channel system at different frequency and noise levels are tested by using three kinds of digital modulation mode including amplitude shift keying(ASK),frequency shift keying(FSK)and differential phase shift keying(DPSK),taking square wave and sine wave as a carrier.Finally,the sine wave is selected to be carrier signal and DPSK is chosen to be modulation mode.The reliable transmission of signal with the error rate less than0.005and the transmission rate of9600bps,at the noise level of-10dB,is realized and verified by the debugging circuit experiments with multi-nodes in the laboratory.The study provides an important experimental evidence for improving signal transmission reliability of inductive coupling transmission system.
文摘（Objective）To strengthen the effect of packaging design, extend the idea of modem design, grope new methods of packaging visual information design.（Methods）Used 4 methods： literature summarizing, market researching, theoretical analyzing and Practice verifying, and contrasted the application method and effect of a variety of packaging materials comprehensively, studied in-depth on the rules of information transmission in package.（Results）Expound the aesthetic forms, such as skin texture, texture and color, etc. of various modem packaging paper, give a comment of the development status and functionality changes of modem package in China, Make the characteristic of packaging visual aesthetic and information dissemination clearly, put forward the 4-steps method of packaging design with Paper form, and predict its development trend.（Conclusion）The paper material has profound aesthetic connotation,it will has a promoting effect on visual information transmission if it is applied cleverly in packaging design. It＇s application prospects can be very Wide.
