Communication system

• US 7,352,282 B2
• Filed: 07/12/2005
• Issued: 04/01/2008
• Est. Priority Date: 07/12/2005
• Status: Expired due to Fees

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Kawamura, Atsushi, Shiraishi, Naoyuki, Yanagida, Yo, Sugimoto, Terumitsu
• Primary Examiner(s): Lee; Benjamin C.
• Assistant Examiner(s): BLOUNT, ERIC
• Application Number:
  US11/178,310
• Publication Number:
  US 20070013490A1
• Time in Patent Office: 994 Days
• Field of Search: 340/538
• US Class Current: 340/538
• CPC Class Codes: G05B 19/052 Linking several PLC's
• CPC Class Codes: G05B 2219/1208 Communication, exchange of control, I-O data between different plc,

Abstract

A communication system includes a power line, a plurality of PLC networks connected to the power line in common, and an electronic control unit for controlling an electric equipment, connected to the power line between the PLC networks. The electronic control unit includes a bypass capacitor that attenuates a communication signal transmitting over the power line.

Claims

1. A communication system, comprising:

a power line;

a plurality of power line communication (PLC) networks connected to the power line in common; and

an electronic control unit for controlling an electric equipment, the electronic control unit being connected to the power line between the PLC networks,

wherein the electronic control unit includes a bypass capacitor that attenuates a communication signal transmitting over the power line.

3. The communication system of claim 1 wherein the electronic control unit is connected directly to the main power line.

4. The communication system of claim 1, wherein the electronic control unit is connected to the power line via a wire harness.

5. The communication system of claim 1, wherein the electronic control unit is connected at a junction between the power line and one of the plurality of PLC networks.

2. A communication system, comprising

a power line;

a plurality of power line communication (PLC) networks connected to the power line in common; and

a junction connector provided on the power line between the PLC networks,

wherein the junction connector includes a capacitor that attenuates a communication signal transmitting over the power line.

6. The communication system of claim 2, wherein the junction connector is located at a junction between the power line and one of the plurality of PLC networks.

7. A communication system, comprising:

a power line;

a first power line communication (PLC) network comprising at least two devices that employ power line communication;

a second PLC network comprising at least two devices that employ power line communication; and

an electronic control unit connected to the power line,

wherein the first PLC network and the second PLC network are connected to the power line,

wherein the electronic control unit is disposed between the first PLC network and the second PLC network, and

wherein the electronic control unit comprises a bypass capacitor that attenuates a communication signal that is transmitted over the power line.