JPH0250531A - Power line carrier home control system - Google Patents

Abstract

PURPOSE:To prevent the control of an equipment from a controller outside a system by detecting with a controller and outputting and interference signal onto an electric power line when a controller address included in a control instruction signal from outside the system is the same controller address as the controller in the system. CONSTITUTION:When the controller 27 outside a system transmits the control instruction signal of the equipment 31 connected to an adapter 25 onto an electric power line 21, controllers 22 and 23 in the system and a communication monitor 24 receive the signal through the electric power line 21. When a controller address included in the peak of a control instruction signal is the same as the controller address stored in controller address storing means 28 and 29, the interrupting signal interfering the communication is outputted onto the electric power line 21. Thus, since the adapter 25 does not receive a regular signal even when a control instruction signal controlling the equipment 31 in the system is transmitted onto the electric power line 21 with the controller 27 outside the system, equipment 31 in the system cannot be controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a power line carrier home control system that superimposes a high frequency signal on a power line to perform communication and remotely control devices in the home.

BACKGROUND OF THE INVENTION In recent years, power line home control systems that use power lines as signal transmission paths to centrally control devices in the home and monitor the status of devices have been attracting attention. This method performs communication by superimposing a communication signal voltage of a sufficiently higher frequency on the AC voltage of the power line, and because special wiring for communication is not required, the effort and cost associated with installation are small. have.

The conventional power line transport home control system will be explained below with reference to the drawings.

FIG. 3 is a block diagram of a conventional power line carrier home control system. In FIG. 3, reference numeral 1 denotes a power line, which supplies power to the system and also serves as a signal transmission channel. 2, 3.12 is the controller, 6, 7.13
is a controller address storage means for storing a controller address specifying a controller, and has a function of transmitting a control command signal starting from the controller address and controlling devices individually or all at once. 4.6 is an adapter, 8 and 9 are devices connected to each adapter 8.9, and the adapter 4.5 receives the control command signal sent by the controller 6.7.13 to control the device 8.9. Decide whether or not to do so. Further, 10 is an outdoor outlet connected to the power line 1 and installed outdoors (for example, in a garden), and 11 is a plug for connecting the controller 12 to the outdoor outlet 10.

The operation of the power line carrier home control system configured as described above will be described below.

First, the device 8.controller 2 is connected to the adapter 4.
For example, when a control command signal to unlock an electric lock is sent over the power line 1, the adapter 4 that receives this signal via the power line 1 decodes the signal and outputs a control signal to the electric lock of the connected device 8 to unlock it. Lock it.

Problems to be Solved by the Invention However, with the above configuration, by connecting the plug 11 of the controller 12 to the outdoor outlet 1o, it is possible to control the appliances 8.9 in the home, for example, to unlock the electric lock. Lock the door and open the shutter to allow intrusion from the outside.

The present invention has been made in view of the above drawbacks and provides a power line carrier home control system that prevents control of equipment from a controller outside the system.

Means for Solving the Problem In order to solve this problem, the power line transport home controller system of the present invention has a power line that is a transmission path of the JFZ, and a controller address storage means for specifying a controller, and the above-mentioned a plurality of controllers that transmit control command signals on the power line to control devices individually or all at once with a controller address at the beginning; a plurality of adapters that receive the control command signals via the power line and control the devices; , a system comprising a total address storage means for storing all controller addresses of the controllers in the system, and wherein the control command signal is received via the power line and the included controller addresses are stored in the total address storage means. a communication monitoring device that transmits an interference signal onto the power line that interferes with communication if it is not among all the controller addresses in the power line;
The controller receives the control command signal transmitted from another controller via the power line, and if the controller address stored in the controller address storage means is included, transmits an interference signal that interferes with communication. The configuration is such that it is transmitted to the power line.

Effect With this configuration, when a controller that specifies an arbitrary controller address from outside the system sends a control command signal onto the power line, if the controller address included in the control command signal is the same controller address as the controller in the system, the same controller will be sent. The controller that has the address detects it and outputs an interference signal onto the power line, and if the controller address does not exist in the system, the communication monitoring device detects it and outputs an interference signal onto the power line, interfering with communication and controlling the equipment. prevent it from being executed.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a power line transport home control system according to an embodiment of the present invention. In Figure 1,
A power line 21 supplies power to the system and also serves as a signal transmission channel.

22, 23, 27 are controllers, 28°29.
35 is a controller address storage means for storing a controller address for specifying a controller, and has a function of transmitting a control command signal starting from the controller address and controlling devices individually or all at once. 25,
26 is an adapter, 31.32 is a device connected to each adapter 25.26, and controllers 22, 23.

The adapter 26.26 receives the control command signal sent by the device 27 and determines whether to control the device 31,32. 2
4 is a communication monitoring device, 3o is an all-address storage means for storing all controller addresses of controllers 28, 29 in the system, and controllers 22, 23, 2.
7 receives the control command signal sent by 7, and stores the controller address and all addresses included in the control command signal 30.
It has a function of comparing the controller addresses stored in the memory means 3o and transmitting an interference signal to interfere with communication if the same controller address is not found in all the address storage means 3o. Further, 33 is an outdoor outlet connected to the power line 21 and installed outdoors, such as in a garden. 34 is a plug for connecting the controller 27 to the outdoor outlet 33. Also, controllers 28 and 29.

35 receives the control command signal sent by another controller, compares the controller address included in the control command signal and the controller address stored in each controller address storage means 28, 29, 35, and if they are the same, the call is terminated. It has the function of transmitting a jamming signal that interferes with the

The operation of the power line carrier home control system configured as described above will be described below.

First, the controller 28 sends a control command signal to the power line 2 to unlock the device 3 connected to the adapter 25, for example, an electric lock.
1, the adapter 25 receives this signal via the power line 21, decodes the signal, outputs a control signal to the electric lock of the connected device 31, and unlocks it. Furthermore, when the plug 34 of the controller 27 outside the system is connected to the outdoor outlet 33 and the controller 27 transmits a control command signal to control the device 31 connected to the adapter 25 onto the power line 21, the control command signal is transmitted to the outside of the system. controller 22
, 23 and the communication monitor 24 receive the controller address via the power line 21 and included at the beginning of the control command signal, and the controllers 22 and 23 use the controller address stored in their respective controller address storage means 28 and 29. If they are the same, a jamming signal is output on the power line 21 to interfere with the communication, and the communication monitor 24 sends the controller 22.
If the controller address is not one of the controller addresses of 23, an interference signal that interferes with communication is output onto the power line 21, and the adapter 25 receives the interfered control command signal and cannot decipher it, so it does not control the connected equipment 31.

FIG. 2 is a power line carrier waveform diagram in a power line carrier home control system according to an embodiment of the present invention.

In FIG. 2, a is the transmission waveform of the controller 27 outside the system, and b is the waveform of the controller 22 inside the system as a result of receiving the control command signal of the controller 27 and recognizing the controller address included at the beginning of the control command signal.
23 or the interference signal waveform transmitted from the communication monitor 24, and C is the received waveform of the adapter 26 that receives the transmitted waveform. Here, the adapter 26 can recognize a normal signal if a signal is superimposed on either the first half or the second half of a half wave of the power waveform, but if a signal is superimposed on both the first half and the second half, it is recognized as an abnormal signal. recognized as Therefore, the adapter 25 receives the received waveform C and the controller 2
When transmitting waveform a of 7 is transmitted to the controller address, it can be recognized as a normal signal, but due to the interference signal waveform, when transmitting waveform a of controller 2 is being transmitted, it can be recognized as an abnormal signal and the load can be controlled. There isn't.

As described above, according to this embodiment, even if the controller 27 outside the system transmits a control command signal for controlling the equipment 31 inside the system onto the power line 21, the adapter 25 does not receive the regular signal. device 31 cannot be controlled.

In this embodiment, the interference wave signal is a superimposed signal of only the signal discrimination section, but a continuous signal may be superimposed.

In addition, the controller address storage means and all address storage means are switches and non-volatile memos! J (EEP.

ROM, CMOS, RAM O/<ts7") may also be used.Also, if all address storage means are volatile memory, all controllers in the system will store their respective controller addresses when the power is restored. The contents of the storage means may be transmitted to the communication monitoring device.

Effects of the Invention As described above, in the present invention, when a controller that specifies an arbitrary controller address from outside the system transmits a control command signal onto the power line, even if the controller address included in the control command signal is the same as that of a controller within the system. If the controller has the same controller address, it will detect it and output an interference signal onto the power line, and if the controller address does not exist in the system, the communication monitoring device will detect it and output an interference signal onto the power line, interfering with communication. By preventing the control of devices from being executed, it is impossible to unlock devices in the home, such as unlocking electric locks or opening shutters, from a controller connected to an outdoor outlet installed outdoors. This makes it possible to live a comfortable life with excellent security and has great industrial effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a power line carrier home control system according to an embodiment of the present invention, FIG. 2 is a waveform diagram, and FIG. 3 is a block diagram of a conventional power line carrier home control system. 21...Power line, 22,23.27...
・Controller, 25.26...Adapter, 2
8, 29. 35... Controller address storage means, 24
...Communication monitoring machine, 3o...All address storage means, 31゜32...Equipment. Name of agent: Patent attorney Shigetaka Awano and one other person Figure I--? , 23.2'7 -- 25, 26 田, 2ff, 35 Shu -- 1 31.32 -- 1 -- 1 Power line controller commuting supervisor a koji a small 9 Kottorolla address 2 inert fuzen address 2 Figure 2

Claims (1)

[Claims] It has a power line that is a signal transmission path, and a controller address storage means that stores a controller address that designates a controller, and transmits control command signals to control devices individually or all at once, with the controller address at the beginning, onto the power line. multiple controllers,
A plurality of adapters receive the control command signal via the power line to control devices, and a total address storage means stores all controller addresses of the controllers in the system, and the adapter receives the control command signal via the power line. a communication monitoring device that transmits an interference signal onto the power line to interfere with communication if the controller address received and included through the power line is not among all controller addresses in the system stored in the all address storage means. , the controller receives the control command signal transmitted from another controller via the power line, and if the controller address storage means contains the same controller address as the controller address, an interference signal that interferes with communication is generated. A power line transport home control system configured to transmit the information to the power line.