Research of Non-interference Multiplex Transmission System of Power with Information

我们一直在开发各种系统，通过应用扩频多址技术来减少布线数量。在这项研究中，我们提出了一种独特的方法，提供电源和控制信号一起负载，只使用一对电线。在这个系统中，权力本身具有多重信息，我们称之为“信息权力”。“我们在调制和解调中使用单极M序列码。这意味着调制和解调只能通过切换进行。因此，该方法可以很容易地应用于电力系统。我们将此方法应用于一个马达控制系统，首先，我们估计了我们所提出的系统的通讯特性。实验结果表明，该系统的误码率不随信道占用数的变化而变化。因此，该系统上级普通系统。在此基础上，开发了一套仅用一对导线就能以5种不同速度驱动和控制负载的实验系统。我们将我们在研究中发展出来的“同步撷取法”应用于此系统。我们使用一个单极PWM逆变器的放大器，以产生信息化的权力。给出了电力与信息无干扰多路传输系统的结构。最后，构建了电力信息化无干扰多路传输系统。虽然通道之间存在一些偏差，但每个电机的操作分别遵循分配给每个通道的控制信号。因此，我们成功地传输控制信号和驱动功率的多个负载，通过只使用一对电线没有同信道干扰。验证了该系统的有效性。

We have been developing various systems for reducing quantity of wiring by applying spread spectrum multiple accessing techniques. In this research, we propose a unique method to supply power and control signals together to loads by using only a pair of wires. In this system, power itself has multiplex information so that we call it "power with information." We use the unipolar M-sequence code in modulation and demodulation. It means that modulation and demodulation can be carried out only by switching. Therefore this method can be applied easily to power systems. We apply this method to a motor control system.At first, we estimated the communication property of our proposed system. It is confirmed that the bit error rate in this system doesn't change by the number of occupied channels. Therefore, this system is superior to the ordinary systems. Then, experimental system that drives and controls loads in 5 different speeds by only a pair of wires is developed. We apply "synchronization acquisition method," which was developed in our research before, to this system. We use a unipolar PWM inverter for the amplifier to generate infomatized power. We show the configuration of the non-interference multiplex transmission system of power with information. Finally, we constructed the non-interference multiplex transmission system of infomatized power. Although there are some deviations among cannels, operations of each motor follows control signal assigned each channel, respectively. Thus, we succeeded to transfer control signals and driving power for the multiple loads by using only a pair of wires without co-channel interference. The effectiveness of our proposed system is verified.