Multiple communication system for vehicular bodies

• US 4,652,853 A
• Filed: 08/14/1984
• Issued: 03/24/1987
• Est. Priority Date: 08/15/1983
• Status: Expired due to Term

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Nakamura, Kazuo, Tagami, Katsutoshi, Tsuchiya, Yoshikazu
• Primary Examiner(s): Swann, III, Glen R.
• Assistant Examiner(s): Hofsass, Jeffery A.
• Application Number:
  US06/640,762
• Time in Patent Office: 952 Days
• Field of Search: 340/52 F, 340/825.54, 340/825.08, 340/825.06, 340/825.05, 340/825.17, 340/825.16, 371/8, 371/9, 371/11, 371/14, 307/10 R
• US Class Current: 307/10.1
• CPC Class Codes: B60R 16/0315 using multiplexing techniques multiplexing for transmission of signals G08C15/00; multiplexing for electrical communication in general H04J
• CPC Class Codes: B60R 2016/0322 Temporary code for documents to be reclassified to G08C, H04L or H04Q

Abstract

A multiple communication system for vehicular bodies, including a plurality of job units each respectively provided with a detection object as a signal source and an electric load, and at least one signal line commonly connected to all of the job units, in which the order of signal transmission of a data signal based on a substantially real-time condition of the corresponding detection object from each of the job units is determined in accordance with a data signal from a particular one of the job units.

The multiple communication system may, additionally comprise a management unit for outputting to the signal line an address signal for specifying that one of the job units which is to become next to output to the signal line a data signal based on a substantially real-time condition of the signal source.

Claims

1. A multiple communications system for vehicular bodies, including:

a plurality of job units dispersively arranged at predetermined locations on a vehicular body;

said job units each being respectively provided with a detection object as a signal source and an electric load;

at least one signal line commonly connected to all of said job units;

means for supplying, from a particular one of said job units, a data signal based on said detection object of said particular job unit to said signal line; and

a management unit connected to said signal line to receive said data signal as transmitted from each of said job units, to thereby monitor the conditions of respective ones of said job units, wherein;

when said data signal from said particular job unit is supplied by said means to said signal line, at least one of said job units other than said particular one of said job units inputs and decodes said data signal to drive said electric load of at least one of said job units;

each of said job units exclusively performs the transmission and the reception of said data signal;

when said particular job unit transmits said data signal, all the remaining ones of said job units receive said data signal and, in accordance with the content of said data signal, that one of said job units which comes to be next to transmit said data signal is determined, such that the signal transmitting and receiving actions of each of said job units are sequentially executed; and

said management unit is adapted to supply said signal line with an abnormality detection signal and give an alarm when an abnormality is verified with respect to any of said job units in the sequential signal transmitting actions of respective ones of said job units, to give information on said job unit verified of said abnormality to those of said job units other than said job unit verified of said abnormality to thereby omit a signal transmitting action of said job unit verified of said abnormality after said abnormality detection signal is supplied.

2. A multiple communication system according to claim 1, wherein:

said signal line comprises an optical fiber.

3. A multiple communication system for vehicular bodies, including:

a plurality of job units dispersively arranged at predetermined locations on a vehicular body;

said job units each being respectively provided with a detection object as a signal source and an electric load;

at least one signal line commonly connect to all of said job units; and

means for supplying, from a particular one of said job units, a data signal based on said detection object of said particular job unit to said signal line, wherein;

when said data signal from said particular job unit is supplied by said means to said signal line, at least one job unit other than said particular one of said job units inputs and decodes said data signal to drive said electric load of at least one of said job units;

said means comprises a management unit connected to said signal line and adapted to output to said signal line an address signal for specifying the signal transmission order of said job units;

each of said job units sequentially performs the transmission in accordance with said address signal, such that the transmission and the reception of said data signal of each of said job units are exclusively performed;

each of said job units is adapted to always monitor said address signal from said management unit and to give an alarm when said address signal is verified of an abnormality; and

after said address signal is verified of the abnormality, when said particular job unit transmits a data signal, all the remaining ones of said job units receive said data signal and, in accordance with the content of said data signal, that one of said job units which is to come to be next to transmit a data signal is determined, such that the signal transmitting actions of respective said job units are sequentially executed.

4. A multiple communication system according to claim 3, wherein:

at least one of said job units is adapted to output at a predetermined timing a priority demand signal for instructing said at least one of said job units to output said data signal with a priority to those of said job units other than said at least one of said job units, and wherein;

said management unit is adapted to output, when said priority demand signal is output, an address signal for instructing said job unit having output said priority demand signal to execute the signal transmitting action, with a priority to an address signal specifying that one of said job units in a normal place of said signal transmission order.

5. A multiple communication system according to claim 3, wherein:

said management unit is adapted to always monitor said data signal output from each of said job units, and not to output, after said data signal output from any of said job units is verified of an abnormality, an address signal specifying said job unit verified of said abnormality.

6. A multiple communication system according to claim 5, wherein:

said management unit is adapted to give an alarm when any of said job units is verified of said abnormality.

7. A multiple communication system according to claim 3, wherein:

said signal line comprises an optical fiber.