JPS6213861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power line transport control system that remotely controls various loads such as televisions, radios, lighting equipment, etc. using power line transport.

In general, in a power line carrier control system, transmitters and receivers 3 and 4 from multiple installation locations (homes) are connected to the same commercial power line 2 as shown in FIG.
There was a problem in that control data from home or home B was transmitted to home B or home A, resulting in interference between the transmitters and receivers 3 and 4 of both homes A and B. Therefore, the second
As shown in the figure, a system has been proposed in which a transmitter 3 and a receiver 4 for an M channel and an N channel are provided as a pair for each channel.

These transmitters 3 and receivers 4 are connected to the commercial power line 2, and when the transmitter 3 side is turned on, address data and control data are transmitted from the transmitter 3, and the corresponding receiver 4 side receives the load. 1 is set to be turned on. However, even in this case, if the channel used by the power line carrier control system installed in the neighbor's house connected to the same commercial power line 2 is unknown, there is no possibility of interference unless it is used for a while after installation. If I didn't understand it, there was a risk that I would have to readjust the channel later.

The present invention has been made in view of the above-mentioned drawbacks.
The purpose of this is to allow one master transmitter to check the channels used by other systems without causing receivers of other systems to malfunction, and in normal situations, to check the channels used by other systems. An object of the present invention is to provide a power line carrier control system that can be operated as a centralized controller that can control and monitor.

The present invention will be explained below with reference to Examples. Third
FIG. 4 shows the overall schematic configuration and signal transmission system of an embodiment of the present invention. In the overall schematic configuration shown in FIG. 3, transmitters 3 and receivers 4 for M channels and N channels are provided as pairs for each channel, and all channels usable as a system can be controlled and receivers 4 can be controlled. This shows an example in which a master transmitter 16 with a monitoring function is provided and connected to the commercial power line 2. When the transmitter 3 is turned on or off, the corresponding receiver 4 turns on or off the load 1. It is set to be turned off. That is, if the transmitter 3 is turned on at the timing shown in FIG. 4b with respect to the commercial power supply waveform shown in FIG. 4a, a high frequency signal as shown in FIG. The high-frequency signal shown in c in the same figure is superimposed on the commercial power line 2, and as shown in e in the same figure, a synchronization signal SP indicating the start of signal transmission and a mode setting the operating mode of the receiver 4 are used. Data MD <Mode data MD output from transmitter 3 is a load control mode code signal that has the meaning of on/off control of load 1>, address data AD indicating the number of the channel to which this transmitter 3 belongs, and this channel. This signal transmission system consists of control data CD sent to the receiver 4 belonging to the transmitter 4, and error check data ED for detecting transmission errors. The synchronization signal SP occupies a half-cycle period, and from this synchronization signal SP, 4 bits are sequentially time-divided and each data is allocated.The 4-bit period after the error check data ED is used as the transmission period of the confirmation data KD from the receiver 4. If there is no signal, the logic value is defined as "0", and if there is a high frequency signal, the logic value is defined as "1". The error check data ED is formed from a logical value code obtained by adding each bit of the mode data MD, address data AD, and control data CD. Now, when a control operation is performed on the transmitter 3, the synchronization signal SP and mode data are sent from the transmitter 3.
MD, address data AD for the channel to which this transmitter 3 belongs, control data CD indicating that the load 1 should be turned on or off, and error check data ED are transmitted. On the other hand, the receiver 4 that has received this reads the mode data MD, sets the operation mode to load control mode, checks the transmission error using the error check data ED, and if correct, changes the contents of the control data CD. At the same time as the load 1 is controlled based on the load 1, confirmation data KD indicating that the load 1 has been turned on or off is transmitted as shown in Fig. 4d, and this is received by the transmitter 3 and displayed for confirmation. be. The master transmitter 16 can select the channel of the receiver 4 to be controlled, and can transmit the same control data as the transmitter 3 described above, as well as transmit confirmation data corresponding to all channels used by the system. In addition, the mode data can be switched between load control mode and used channel confirmation mode, and when set to used channel confirmation mode, the receiver 4 side changes the operating mode according to the mode data. Switches to the usage channel confirmation mode, and even if control data CD is received, the operating state of load 1 is maintained in the previous state, and only the confirmation data KD of that state is returned. When the main transmitter 16 receives the confirmation data KD, if the mode setting is the used channel confirmation mode, it displays the corresponding channel for confirmation, and the previous state is not displayed for the channel for which the confirmation data KD has not been transmitted. No confirmation display is made regardless of the status. FIG. 5 shows a transmitter 3 according to an embodiment of the present invention.
The specific configuration of the receiver 4 is shown in FIG. 6 as the main transmitter 16.
As shown in the figure, these internal generators and receivers 3 and 4 have approximately the same circuit configuration centered around a microprocessor (hereinafter referred to as CPU) 7. The circuit portion of the receiver 4 side shown in FIG. 5, whose details are omitted, is completely the same as that of the transmitter 3 side. Reference numeral 8 denotes a channel setting device, which is composed of a depth switch and the like, and the same channel number is set in each corresponding transmitter 3 and receiver 4. Thus, in the circuit shown in FIG. 5, the CPUs 7, 7 input the commercial frequency clock output from the commercial frequency clock detection circuits 9, 9, and operate in synchronization with this clock, and when the push button 10 of the transmitter 3 is operated. A control input is input to the CPU 7 on the transmitter 3 side, and when transmission data is output from this CPU 7, this is input to the high frequency oscillation circuit 11, and the oscillated high frequency signal is superimposed on the commercial power line 2 via the coupling circuit 12. be done. On the other hand, in the receiver 4, the high frequency signal superimposed on the commercial power line 2 is taken out via the coupling circuit 12, amplified by the reception amplification circuit 13, and inputted to the CPU 7. Mode data MD is CPU7
This indicates that the address data AD is for the own channel.
Determined by CPU7 and error check data
When the ED determines whether or not there is a transmission error and it is determined that there is no transmission error, the mode data MD
If it is in the load control mode, it will generate a control output based on the contents of the control data CD and turn on or off an output element such as the output relay 14. Next, when the CPU 7 on the receiver 4 side has finished operating, the receiver 4
Confirmation data will be sent through the high frequency oscillation circuit 11 and coupling circuit 12 on the side.
The transmitter 3 side that receives this inputs it to the CPU 7 via the coupling circuit 12 and the reception amplification circuit 13 in the same way as the reception processing in the receiver 4, and displays a confirmation display such as the confirmation display light emitting element 15 when on control. will turn on, and will turn off when under OFF control. On the other hand, the main transmitter 16 is provided with channel setting switches SW ₁ to SW _o for setting channels to be controlled, corresponding to the number of channels used in the system, and by turning on these channel setting switches SW ₁ to _{SW o} , a predetermined setting is performed. Creates channel address data AD, and has a switch SW _ON for ON operation and a switch SW _OFF for OFF operation, and responds by turning ON or OFF the switch SW _ON or SW _OFF . The control data CD is created, and the received confirmation data KD incorporates the confirmation data KD of each channel transmitted on the commercial power line 2, and confirmation display light-emitting elements 15 ₁ to 15 are provided corresponding to each channel. It is different from the basic transmitter 3 in that it has a centralized control and monitoring function to turn on or off _{the o} , and it also sets the mode data MD to switch to load control mode or channel confirmation mode. A mode changeover switch SW _A is provided, and when the mode changeover switch SW _A is turned off, the mode data MD of the load control mode is switched on or off depending on the CPU 7's determination.
It is transmitted when SW _ON or SW _OFF is turned on, and performs remote control and confirmation display similar to transmitter 3.
When mode selector switch SW _A is turned on, CPU7
Confirmation display light emitting elements 15 ₁ to 15 _o
are all in their initial state, i.e., turned off and set to predetermined control data.
Sequentially transmit data signals consisting of mode data MD, address data AD, control data CD, and check error data ED to channels 1 to n, and receive confirmation data KD sent back from receiver 3 in sequence. It is something. In this case, on the receiver 3 side, the CPU 7 determines that the reception mode data MD indicates the used channel confirmation mode, and the output relay 14 is maintained as it is without turning on or off the output relay 14 according to the control data CD. 14 (that is, the state of load 1) is returned.

On the other hand, the master transmitter 16 determines whether the setting mode is the used channel confirmation mode or not, and if it is the used channel confirmation mode, whether there is a reply of confirmation data KD from the receiver 3 of each channel that transmitted the control data CD. If the confirmation data K is not returned, the confirmation display light-emitting element 15 of the channel is turned off, and if the confirmation data KD is returned, the confirmation display light-emitting element 15 of the channel is turned on. . 7 is a flowchart of the main operations of the receiver 4, and FIG. 8 is a flowchart of the main operations of the main transmitter 5.

In the above embodiment, when the mode changeover switch SW _A is turned on, the control data is determined by the CPU 7.
CDs are automatically transmitted from channel 1 to NC _h channel, but it may be possible to confirm the use of any channel by selecting channel setting switches SW ₁ to _{SW o} . .

In this way, the main transmitter 16 has centralized control and monitoring functions in normal times by setting the mode changeover switch SW _A to load control mode, and has the effective area of the same power line 2 by setting it to the channel confirmation mode. It is possible to have an interference check function that checks the channels used by similar systems used within the network.

In a power line carrier control system, the present invention sets mode data for switching the operation of a receiver between a load control mode and a used channel confirmation mode in data transmitted from a transmitter, and even if the receiving mode data is in a used channel confirmation mode, For example, the receiver is equipped with a discrimination function that returns only the current status confirmation data without performing load control, and a switching function that allows selection and setting between load control mode and used channel confirmation mode, and the receiver is compatible with all used channels. An operating means for selectively applying control input, and a display function that receives all confirmation data sent back via commercial power lines from the receivers of all used channels and drives confirmation display light emitting elements provided for each corresponding channel. When the setting mode is set to the used channel confirmation mode, all confirmation display light emitting elements are returned to the initial state and only the confirmation display light emitting elements of the channel of the receiver for which confirmation data has been returned are driven to display. Since it is equipped with a master transmitter, when installing the system, connect the master transmitter to the commercial power line, set the mode data to be transmitted to the channel confirmation mode, and set the control data to correspond to each channel or the channel you wish to use. By simply transmitting the transmitter, you can check the channel used by similar systems connected to the same power line within the effective area by checking the confirmation display light emitting element of the main transmitter, and easily set channels without interference during installation. In addition, the receiver side does not malfunction when checking the channel in use, and can check the channel in use without affecting other systems.If the mode data to be transmitted is set to control mode, the main transmitter will not malfunction. The machine can normally be used as a centralized controller and for monitoring, resulting in no waste.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a conventional system, Fig. 2 is a schematic diagram of another conventional system, Fig. 3 is a schematic diagram of an embodiment of the present invention, and Fig. 4 is a signal formation used in the above. Explanatory diagram, FIG. 5 is a circuit configuration diagram of the same transmitter and receiver, FIG. 6 is a circuit configuration diagram of the same main transmitter, FIG. 7 is a flowchart of the main operation of the same receiver, and FIG. The figure is a circuit configuration diagram of the same main transmitter as above, 1 is a load, 2 is a commercial power line, 3 is a transmitter, 4 is a receiver, 15, 15 ₁ ... is a confirmation display light emitting element, 16 is a main transmitter, MD is mode data,
KD is confirmation data, CD is control data, and AD is address data.

Claims (1)

[Claims] 1 In response to a predetermined control input, address data and control data are superimposed on the commercial power line and transmitted from the transmitter, and the receiver of the channel called by the address data receives the load dependent on the receiver based on the received control data. In a power line carrier control system, the load operation confirmation data is superimposed on a commercial power line and transmitted to the transmitter side, and the transmitter lights up a confirmation display light emitting element based on the reception confirmation data. Set the mode data that switches the receiver operation between load control mode and used channel confirmation mode in the data, and if the reception mode data is used channel confirmation mode, only the confirmation data of the current status is displayed without performing load control. The receiver is provided with a determination function for sending back data, a switching function that allows selection and setting between load control mode and used channel confirmation mode, an operation means that selectively applies control inputs corresponding to the receivers for all used channels, and It has a display function that receives all the confirmation data sent back from the receiver via the commercial power line and drives the confirmation display light emitting element provided for each corresponding channel, and the setting mode is set to the used channel confirmation mode. The power line is characterized in that it is equipped with a master transmitter that returns all the confirmation display light emitting elements to their initial states when the confirmation data is sent back and drives only the confirmation display light emitting elements of the channel of the receiver for which the confirmation data has been returned. Conveyance control system.