An adaptive time delay compensation algorithm has been developed based on thorough analysis of the integrated information transmission platform and the composition and characteristics of the time delay in V.35 channel, during which forward and reverse V.35 transmission channel has been developed properly. Combining AVR-microcontroller unit with Protothreads mutiple-thread technologies, automatic measurement and adaptive compensation of the transmission channel transmission delay is realized. The scheme does not need to change the time code terminal and just uses V.35 channel of integrated information transmission platform to transmit high precision time information, which can effectively reduce the demodulation error caused by signal distortion. Moreover, it also can simplify the wirting of the system and enhances the deployment flexibility of time code terminal.

Abstract. Based on thorough analysis of the integrated information transmission platform, a setup is demonstrated that can measure ship main engine rotating rate based on opto-elemetronic method, which includes opto-elemetronic sensor block, data collecting terminal, display terminal and power supply module. Then, combing V.35 channel integrated information transmission platform with protothreads mutiple-thread technology, the method to configure forward and reverse V.35 transmission channel has been developed, which can effectively reduce the demodulation error caµsed by signal distortion, simplify the wiring of the system, and enhances the deployment flexibility of time code terminal.