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    • 5. 发明授权
    • Method and system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium
    • 用于调制载波频率以支持通信介质的非破坏性逐位仲裁的方法和系统
    • US06831551B2
    • 2004-12-14
    • US10248117
    • 2002-12-19
    • David DavenportRalph HoctorKuna KishoreMukesh Soni
    • David DavenportRalph HoctorKuna KishoreMukesh Soni
    • H04M1104
    • H04B3/54H04B2203/5408H04B2203/5425H04B2203/5458H04B2203/5483H04B2203/5491H04L25/0264
    • A system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium. The system comprises a first sensor module coupled to a power supply line via a first power line coupling circuit. The first sensor module comprises a first micro-controller and a first transceiver. The first transceiver includes a first transmitter for converting a digital signal received from the first micro-controller into a first analog signal for transmission over the power supply line. The first transmitter includes a first oscillator operating within an allowable frequency deviation to provide a first predetermined onset phase. The system further comprises a second sensor module coupled to the power supply line via a second power line coupling circuit. The second sensor module comprises a second micro-controller and a second transceiver. The second transceiver includes a second transmitter for converting a digital signal received from the second micro-controller into a second analog signal for transmission over the power supply line. The second transmitter includes a second oscillator operating within the allowable frequency deviation to provide a second predetermined onset phase. The second analog signal is different from the first analog signal and the second predetermined onset phase is different from the first predetermined onset phase. The difference between the first predetermined onset phase and the second predetermined onset phase is within a limit.
    • 一种用于调制载波频率以支持通信介质的非破坏性逐位仲裁的系统。 该系统包括经由第一电力线耦合电路耦合到电源线的第一传感器模块。 第一传感器模块包括第一微控制器和第一收发器。 第一收发器包括用于将从第一微控制器接收的数字信号转换为第一模拟信号以在电源线上传输的第一发送器。 第一发射机包括在允许的频率偏差内工作的第一振荡器,以提供第一预定起始阶段。 该系统还包括经由第二电力线耦合电路耦合到电源线的第二传感器模块。 第二传感器模块包括第二微控制器和第二收发器。 第二收发器包括用于将从第二微控制器接收的数字信号转换成第二模拟信号以在电源线上传输的第二发射器。 第二发射机包括在允许的频率偏差内工作的第二振荡器,以提供第二预定起始阶段。 第二模拟信号与第一模拟信号不同,第二预定开始阶段不同于第一预定开始阶段。 第一预定开始阶段与第二预定开始阶段之间的差异在限制之内。