Electrical devices control system

• US 3,965,366 A
• Filed: 08/30/1974
• Issued: 06/22/1976
• Est. Priority Date: 09/03/1973
• Status: Expired due to Term

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation), TOYO Kohan Company Limited (Toyo Seikan Group Holdings, Ltd.)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation), TOYO Kohan Company Limited (Toyo Seikan Group Holdings, Ltd.)
• Inventors: Shimizu, Osamu, Ueda, Atsushi, Sumida, Shizuo, Ishii, Mitsuaki, Nii, Kazuo
• Primary Examiner(s): Schaefer, Robert K.
• Assistant Examiner(s): Ginsburg, M.
• Application Number:
  US05/501,985
• Time in Patent Office: 662 Days
• Field of Search: 307/10 R, 307/39, 307/9, 340/183, 340/52 F, 340/167 R, 340/413, 340/168 R, 340/147 C, 340/146 CN
• US Class Current: 307/39
• 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: G08C 15/12 the signals being represented by pulse characteristics in transmission link

Abstract

An electrical device control system comprising: a plurality of signal sources; a plurality of electrical loads; a central operation apparatus; a plurality of terminal operation apparatus connected to the plurality of electrical loads and having means to detect the operation and a fault of the signal source and a fault of the electrical load and to generate a time division signal thereof; a multiple signal transmission line connecting the plurality of terminal operation apparatus to the central operation apparatus to transmit the time division signal to the central operation apparatus; the central operating apparatus having means to generate an activating signal for transmission over the multiple signal transmission line to the terminal station apparatus to operate an electrical load in response to the detection of the time division signal.

Claims

1. An electrical device for controlling and monitoring loads comprising:

a central operation apparatus comprising;

a timing part,

a control part,

an operating part,

a memory part,

an input-output operating part,

means connecting the timing part to the control part and to the input-output operating part,

means connecting the control part to the operating part and to the memory part,

means connecting the operating part and the memory part,

means connecting the memory part and the input-output operating part,

means connecting the input-output operating part and a multiple signal transmission line,

a first electrical load,

a first terminal operation apparatus comprising;

an input-output operating part,

a signal separating part,

a return signal composing part,

a driving part,

a return signal generating part,

means connecting the multiple signal transmission line and the input-output operating part,

means connecting the input-output operating part to the signal separating part,

means connecting the signal separating part to the driving part,

means connecting the signal separating part to the return signal composing part,

means connecting the driving part to the first electrical load,

means connecting the driving part to the return signal generating part,

means connecting the first electrical load to the return signal generating part,

means connecting the return signal generating part to the return signal composing part,

means connecting the return signal composing part to the input-output operating part,

a signal source control switch,

a second terminal operation apparatus comprising;

an input-output operating part,

a signal separating part,

a return signal composing part,

a return signal generating part,

means connecting the multiple signal transmission line and the input-output operating part,

means connecting the input-output operating part to the signal separating part,

means connecting the signal separating part to the return signal composing part,

means connecting the signal source control switch to the return signal generating part,

means connecting the return signal generating part to the return signal composing part,

means connecting the return signal composing part to the input-output operating part.

2. An electrical device for controlling and monitoring loads in accordance with claim 1 wherein a combination including the timing part comprises:

an oscillating part,

a control clock generating part,

a multiple signal clock generating part,

a synchronizing signal generating part,

means connecting the oscillating part to the control clock generating part and to the multiple signal clock generating part,

means connecting the multiple signal clock generating part to the synchronizing signal generating part and to the input-output operating part,

means connecting the synchronizing signal generating part to the control part and to the input-output operating part,

means connecting the control clock generating part to the control part.

3. An electrical device for controlling and monitoring loads in accordance with claim 2 wherein the combination including the control part comprises:

an operating control part,

a read-out control part,

a read-in control part,

means connecting the operating control part to the operating part and to the memory part,

means connecting the read-out control part to the memory part,

means connecting the read-in control part to the memory part.

4. An electrical device for controlling and monitoring loads in accordance with claim 3 wherein the combination including the input-output operating part comprises:

an output signal operating part,

an input signal operating part,

a first buffer part,

a second buffer part,

a third buffer part,

the multiple signal transmission line comprising a clock signal transmission line and a data signal transmission line,

means connecting the multiple signal clock generating part to the first buffer part, to the output signal operating part and to the input signal operating part,

means connecting the synchronizing signal generating part to the output signal operating part,

means connecting the memory part and the output signal operating part,

means connecting the output signal operating part to the second buffer part,

means connecting the third buffer part to the input signal operating part,

means connecting the first buffer part and the clock signal transmission line,

means connecting the second buffer part and the data signal transmission line,

means connecting the third buffer part and the data signal transmission line.

5. An electrical device for controlling and monitoring loads in accordance with claim 1 wherein a combination including the input-output operating part of the terminal apparatus comprises:

a first buffer part,

a second buffer part,

a third buffer part,

the multiple signal transmission line comprising a clock signal transmission line and a data signal transmission line,

means connecting the clock signal transmission line and the first buffer part,

means connecting the data signal transmission line and the second buffer part,

means connecting the data signal transmission line and the third buffer part,

means connecting the first buffer part to the signal separating part,

means connecting the second buffer part to the signal separating part,

means connecting the third buffer part to the return signal composing part.

6. An electrical device for controlling and monitoring loads in accordance with claim 5 wherein the combination including the signal separating part comprises:

a synchronizing signal separating part,

an address separating part,

a data detecting part,

means connecting the first buffer part to the synchronizing signal separating part and to the address separating part,

means connecting the second buffer part to the synchronizing signal separating part and to the data detecting part,

means connecting the synchronizing signal separating part to the address separating part,

means connecting the address separating part to the return signal composing part,

means connecting the address separating part to the data detecting part,

means connecting the data detecting part to the driving part.

7. An electrical device for controlling and monitoring loads in accordance with claim 6 wherein the combination including the driving part comprises:

a data demodulating part,

an amplifying part,

means connecting the data detecting part to the data demodulating part,

means connecting the data demodulating part to the amplifying part and to the return signal generating part,

means connecting the amplifying part to the electrical load.

8. An electrical device for controlling and monitoring loads in accordance with claim 7 wherein the combination including the return signal generating part comprises:

a return signal detecting part,

a potential detecting part,

means connecting the electrical load to the potential detecting part,

means connecting the potential detecting part to the return signal detecting part,

means connecting the return signal detecting part to the return signal composing part,

means connecting the data demodulating part to the return signal detecting part.