JPS5995791A - Home control system - Google Patents

Abstract

PURPOSE:To transmit a video signal and an information signal on the same information line by interrupting the polling transmssion performed at all times at the transmission of video information. CONSTITUTION:An air-conditioning device 3, a hot water device 4, and a TV camera 6 are connected to a main controller 1 via an information line 2, and an operating section of the main controller 1 is provided with a function selecting key 8, a position selecting key 9 and a numeral setting key 10 and the like. The polling transmission control system is adpoted for the communication system and the transmission is controlled by taking the controller 1 as a master station and each device connected via the information line 2 as a slave station. In transmitting a picture by connecting the TV camera 5 to the information line 2, the polling transmission is interrupted for a prescribed time only. Since the time is larger than the video signal transmitting time, no malfunction takes place.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for centrally controlling household electrical appliances.
System Control System KFJ]

Conventional configurations and their problems Traditionally, in systems such as home controllers using TV cameras, CRTs, and building central management systems, which use the polling control method, the information line for information transmission and the TV camera It had two signal lines: a video information line for transmitting video signals from.

However, this configuration requires two signal lines, one for information transmission and one for video transmission, which poses problems in terms of cost and number of signal lines in home control systems. It was.

OBJECTS OF THE INVENTION The present invention solves such conventional problems, and aims to allow the same information line to serve as both an information line for information transmission and a signal line for video information transmission.

Structure of the Invention In order to achieve this object, the present invention provides, as an operating section of a main controller, at least a function selection key for selecting a function of each connected device, a location selection key for selecting a location, and a TV camera to display the location. The main controller, which has a monitor key for monitoring, a numeric keypad for setting numerical values, and a CR7 display section as a display section, and at least an air conditioner, a water heater, and a TV camera are connected by the same information line, and a polling transmission control method is used. In the home control system, the main control a--y-tDGR
When displaying video information from a TV camera on the T display section, when transmitting a video signal from a multipurpose TV camera on the information line, polling transmission is interrupted for a certain period of time T. It is something.

With this configuration, when you want to view monitor information at a certain location by inputting the monitor key on the main controller's operation panel, the polling transmission control, which is always on, can be temporarily interrupted and the TV set at that location can be displayed. By transmitting the video signal from the camera on the information line,
Monitor information will be displayed on the display section of the main controller.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. In FIG. 1, air conditioning equipment 3. Hot water equipment 4. A TV camera 5 is connected to each club room.

FIG. 2 is a front view of the main controller 1 and 6.
is the CR7 display section, and the end is the operation section. The operation unit γ includes a function selection key 8 for selecting the function of each device. Location selection key for selecting a location 9. Numerical setting key 1o for setting numerical values, monitor key 11 for monitoring a specified location from a TV camera. A registration key 12 for registering each device to the main controller, a setting ON key 13. A setting OFF key 14 is provided. Also, the function selection key 8 has a bath.

There are function keys for cooling, heating, dehumidification, etc., and location selection key 9.
There are location keys for the living room, Japanese-style room, kitchen, children's room, bedroom, etc.

Here, the method of operating the operating section will be explained using one example. 1. Press the "Cooling" key among the function selection keys 8, and press the "Living room" key among the place selection keys 9. It will look like the figure. Here, by setting the cooling start time, cooling temperature, etc. using the numerical setting key 1o, and setting the setting ON key 13, when the set cooling start time comes, the air conditioner 3 in the "living room" The air conditioner transmits cooling start information and cooling temperature information to the air conditioner.

Next, transmission control in this system will be explained. The communication method is a two-wire half-duplex communication method, and as a transmission control,
A polling transmission control method is adopted. Main controller 1 is the master station, information line 2 (coaxial cable here)
Transmission control is performed using each device connected via the terminal as a slave station.

The situation is shown in FIGS. 4 and 5. FIG. 4 shows the data structure of transmission information, and FIG. 4(a) is its basic form. Each piece of transmitted information has a SYN code for synchronization and an address code for each device (slave station). "Check" is a check code for detecting errors in transmission. Figure 4(b) shows the ENQ1 command (registration command) used when the master station requests what type of device each slave station is.
It is.

When the slave station corresponding to this address correctly receives the command, it must transmit the data information shown in FIG. 4(C) to the master station. This includes an attribute code indicating what type of equipment the slave station is. Also, if the slave station cannot receive data correctly, N
ACK command (Figure 4(d)) ``c'' must be returned to the master station.This situation is shown in Figure 6(ia).

Also, when the master station wants to transmit data to a certain slave station, it transmits the KNQ2 command (transmission command) shown in FIG. 4 (8). In response, the slave station sends an ACK in Figure 4(f).
It is necessary to send two commands. Also, when the master station requests data transmission from the slave station, E in Figure 4(g)
Send the NQ3 command (reception command) to the slave station. The ACKl and 2 commands used here are to notify the master station that the data has been received correctly, whereas the NACK command detects all errors in the data and sends the master station again. It is for requesting data. This situation is shown in FIGS. 5(b) and 5(C). In this way, the R station has the priority 11 to decide which slave station to communicate with, and the above-mentioned transmission control method is herein referred to as a polling transmission control method. In the present invention, the ENQ4 command (video information request command) shown in FIG.
) is provided - If each slave station receives this command,
All slave stations send the ACK2 command (Fig. 4(f)') to the master station, and all slave stations other than one corresponding slave station (the slave station with the address corresponding to the F, NQ4 command) 2
(coaxial cable) (this means that all slave stations send an ACK2 command back to the master station in response to polling).

Thereafter, the master station transmits all ENQ5 commands (video information transmission commands (O) in FIG. 4) to the corresponding slave stations.

From that point on, the master station and each slave station start their internal timers at the same time, and one corresponding slave station runs for a period of T.

The slave stations other than the slave station corresponding to the master station release the information line 2 for video signal transmission during period T', and polling control is interrupted during this period. The corresponding slave station mentioned here is the TV left camera. In addition, a relationship of T(:T' is provided, so that the polling transmission control from the main controller 1 is restarted after the video signal transmission from the TV left camera etc. is surely completed. Fig. 6 is a circuit block diagram of the control circuit section of the main controller 10, which includes an 18-bit microprocessor 15, ROM 16° RAM 1
y, CRTClB (CRT controller), video R
AM19, peripheral interface PIA2o
, PIA21. Further, the transmission is performed by the communication intern ace circuit section of -22. 23 is a switch for directly inputting video signals from the TV left camera to the CRT display unit 6; during the period T' mentioned above, the signal from the information line 2 is not input.

It is directly input to the CRT display section. Further, the switch 23 is controlled by one control signal 24 of the PIA 20. 25
is a switch used when displaying the screen via the 0RTC 18, and is driven by the control signal 26.

In the above configuration, the information line for the home control system is the information line for polling transmission control;
Because it is also used for transmitting video information from the left camera,
Only 11 physical signal lines are required. or,
The period T during which video information from the TV left camera is transmitted is also smaller than the period T' during which the main controller and the corresponding slave station outside the TV left camera release the information line for video information transmission. Therefore, when polling control is restarted, video information cannot be recognized as polling control information.
What! 7 - It is the best choice for home control/susom and is very effective. In addition, although an embodiment of the TV left camera m has been described here as a video information generation source, a VTR
, the same effect can be obtained using video discs, etc.
As described above, the home control system of the present invention provides the following effects.

(1) Since the signal line for video information transmission and the signal line for polling transmission are used, only one information line is required for the entire system, resulting in cost effectiveness.

(2) Since polling transmission control is performed after the transmission of video information is surely completed, one piece of video information is not recognized as polling information.

(3) Press the “location selection” key and “monitor” key on the operation panel.
By operating it, you can monitor the video information Nt at any location.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the entire home control system of the present invention, FIG. 2 is a front view of the main controller of the present invention, FIG. 3 is a diagram showing an example of a CRT screen display, and FIG. a) to 0) are diagrams showing the data structure of transmission information used in an embodiment of the present invention, and FIGS. 6(a) to 6(C)
6 is a diagram showing a polling transmission control method for data transmission used in an embodiment of the present invention, and FIG. 6 is a circuit block diagram showing a control circuit of a main controller in an embodiment of the present invention. 1...Main controller, 2...Information i1 +3...Air conditioner, 4...Water heater, 6...TV left camera 6...・・・CR
T display section, 7...Operation section, 8...Function selection key, 9...Location selection key, 10...
・Numeric value setting key, 11...Monitor key. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
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Claims (3)

[Claims] (1) At least an air conditioner, a hot water supply device, a TV camera, and a main controller having a CRT display section,
When configuring a home control system that is connected by the same information line and uses a polling transmission control method, and transmits a video signal from a TV camera on the information line, the home control suspends polling transmission for a certain period of time T. system. (2) The operation section of the main controller includes at least a function selection key for selecting the function of each connected device, a location selection key for selecting a location, a monitor key for monitoring the location with a TV camera, and a numeric keypad for setting numerical values. Claims No. 1 consisting of: Home control system described by TJ. (3) The fixed time T is the period during which the TV camera transmitting video information uses the information line, and the period during which the main controller and other devices release the information line is T', then T ( The home control system according to claim 1, which has a relationship of T' and restarts polling transmission control after the period T' has elapsed.