Centralized control system for home electric appliances

• US 4,808,841 A
• Filed: 11/12/1987
• Issued: 02/28/1989
• Est. Priority Date: 11/12/1986
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Ito, Yukihiro, Miyamoto, Yoshimi, Imaizumi, Takeshi, Tukahara, Tadayuki
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Logan, Sharon D.
• Application Number:
  US07/119,487
• Time in Patent Office: 474 Days
• Field of Search: 307/11, 307/40, 307/38, 307/31, 340/310 A, 340/310 CP, 340/825.06, 340/825.07, 340/825.22, 340/310 R
• US Class Current: 307/11
• CPC Class Codes: G05B 19/0426 Programming the control sequence
• CPC Class Codes: G05B 2219/21105 Read in data only if value changes, transition to save processor time
• CPC Class Codes: G05B 2219/23051 Remote control, enter program remote, detachable programmer
• CPC Class Codes: G05B 2219/23191 Command to control simultaneously several machines
• CPC Class Codes: G05B 2219/24048 Remote test, monitoring, diagnostic
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00009 using pulsed signals
• CPC Class Codes: H02J 13/00017 using optical fiber
• CPC Class Codes: H02J 2310/12 The local stationary network supplying a household or a building
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/00 Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
• CPC Class Codes: Y04S 20/20 End-user application control systems
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses

Abstract

Disclosed is a centralized home appliances simultaneous control system consisting of controller(s) and terminal units associated with home electric appliances. Setting of batch control is done in a centralized manner on the controller(s) and it is stored in the memory provided in the controller(s), instead of being done on the individual terminal units. The settings stored in the controller'"'"'s memory are sent via a communication medium to the memory in each terminal unit, and the setup status of each terminal unit is sent back to the controller(s) for the purpose of monitoring with reference to the contents of the controller'"'"'s memory. A batch control command signal is issued from the controller(s) to the terminal units, which then responds to control the operation of the associated electric appliances in accordance to the batch control plan corresponding to the command held in the memory of the terminal units.

Claims

1. A centralized control system for home electric appliances comprising:

a controller for implementing centralized simultaneous control and monitoring of the operation of a plurality of electric appliances; and

a plurality of terminal units linked to said controller through a communication medium for directly controlling operation of said electric appliances;

wherein said controller includes setting means for setting a designation of electric appliances to be simultaneously controlled and for setting control plans for said simultaneously controlled electric appliances, first memory means for storing set values set by said setting means, command means for entering a simultaneous control command, and first transmission means for sending a signal including said set values and/or said simultaneous control command to terminal units corresponding to said simultaneously controlled electric appliances; and

wherein each terminal unit includes first reception means for receiving said signal from said controller and for analyzing said signal, second memory means for storing set values if said signal represents set values, and for storing a control plan which controls operation of a simultaneously controlled electric appliance, and control means for referring to said second memory means to obtain a control plan corresponding to said simultaneous control command and for controlling the operation of said simultaneously controlled electric appliance in accordance with said control plan if said signal represents a simultaneous control command.

2. A control system according to claim 1, wherein said controller further comprises:

second reception means for receiving signals from said terminal units indicative of the states of said terminal units, and monitoring display means for displaying an indication of the states of said terminal units in accordance with said signals received by said second reception means; and

wherein each terminal unit further comprises monitoring means for monitoring the operational state of a simultaneously controlled electric appliance associated with said terminal unit, and second transmission means which, when the operational state of said appliance has changed, sends a signal indicative of the change in the operational state of said simultaneously controlled electric appliance to said controller.

3. A control system according to claim 1, wherein said first memory means comprises a non-volatile memory.

4. A control system according to claim 1, wherein said second memory means comprises a non-volatile memory.

5. A control system according to claim 2, wherein said first memory means comprises a non-volatile memory.

6. A control system according to claim 2, wherein said second memory means comprises a non-volatile memory.