JPS6329880B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical remote control switch for remotely controlling a load.

Conventionally, this type of optical remote control switch has a transmitter T that emits modulated light P modulated based on a load control signal and a transmitter T that receives the modulated light P from the transmitter T, as shown in FIG. The receiver R' reproduces the load control signal and controls the load L on and off using the reproduced load control signal. By the way, in such a conventional example, the load L was directly controlled on and off by a switching circuit installed in the receiver R', so there was no need for new wiring work. In order to achieve this, it was necessary to place the receiver R' near the load L. For example, a load L such as a ceiling lighting device
The receiver R' that controls this was installed between the hook ceilings Sa and Sb installed on the ceiling.
However, if the receiver R' is placed near the load L in this way, the ceiling will not look good, and
The controllable range in which the load L can be remotely controlled by the transmitter T (the modulated light P emitted from the transmitter T is
The disadvantage is that the range of direct incidence on R' becomes small and the merits of remote control may be lost. That is, there are cases where it is not possible to remotely control a load L such as a ceiling lighting device installed in the center of a large room from near the entrance of the room.
Moreover, it was impossible to control it remotely from another room. Furthermore, when a plurality of loads L are remotely controlled by a pair of transmitter/receivers T and R', new wiring work is inevitably required, which has the disadvantage of being complicated. The present invention aims to solve the above-mentioned drawbacks.

Examples will be described below using figures. Figures 1 to 4 show an embodiment of the present invention.
is a transmitter that emits modulated light P modulated based on a load control signal, and is composed of an operation switch 15, a transmission signal generator 16, a light projection driver 17, and a light emitting diode 18. Based on _{the load} control signal V _L generated by pressing _the The light emitting diode 18 is blinked in response to the signal V _T , and modulated light P modulated based on the load control signal V _L is projected. In addition,
The transmitter T uses a battery power source to make it portable.

R receives the modulated light P from the transmitter T and regenerates the load control signal V _{L ;}
This is a receiver that controls on/off of a load L using a light receiving section 1 that receives modulated light P, and a load control signal from a light receiving signal V _R output from the light receiving section 1.
A light receiving signal processing circuit 2 that regenerates the load control signal V _L , a control signal generation circuit 3 that generates a control signal V _C for the load _L to be controlled that is preset based on the regenerated load control signal V L, and a control signal generation circuit 3 that generates the control signal V _C Commercial power line
The receiver R is arranged on a wall W. 9 in the figure is a constant voltage power supply circuit. Reference numeral 6 denotes a manual switch that inputs a pseudo load control signal V _L ' equivalent to the load control signal V _L outputted from the light reception signal processing circuit 2 to the control signal generation circuit 3. The load L can be turned on and off without using the receiver T, and the receiver R has the function of a so-called wall switch. 7 is a load selection switch that sets the load L to be controlled, and each switch SW sets the address of the load L to be controlled, and the control signal containing the address data set by the load selection switch 7 is
V _C is transmitted from receiver R to power line l. 5 is a terminal device provided corresponding to the load L, which turns on and off the load L by taking in the control signal V _C that includes address data that matches its own unique address from among the control signals V C received via the power line L. It is arranged at an inconspicuous position near the load L or inside the load L. The load selection switch 7
is the base 21a stored in the embedded box 20.
It is arranged on the side edge of the control panel and is covered with a front plate 22, so that it cannot be operated unless the front plate 22 is removed, thereby preventing the load L to be controlled from being changed inadvertently. are doing. 2
3 is a light transmitting window provided on the front plate 22, which is provided corresponding to the light receiving window 1a of the light receiving section 1 of the receiver R, and the operator of the transmitter T faces the light transmitting window 23. All you have to do is project the light. In the figure, 24 is a manual switch protrusion window. Note that the bases 21a, 2
1b is used for a triple outlet, and includes a front plate 22 and an embedded box 20.
Since the same standard is used for both, it is possible to use common parts with the outlet component parts. FIG. 4 shows an example in which the receiver R is disposed on a wall W near the entrance of a room.

The operation of the receiver R will be specifically explained below. Now, when the modulated light P projected from the transmitter T is received by the photodiode 10 of the light receiving section 1,
A light reception signal V _R that has been photo-electrically converted by the photodiode 10 is sent to an amplifier circuit 11 formed by transistors Q ₁ to _{Q 5} and whose front half is housed in a shield box.
The signal is amplified in width and output from the light receiving section 1. This received light signal V _R is input to the received optical signal processing circuit 2,
In the differential detection circuits 12a and 12b composed of filters _F1 and _F2 and diodes _{D1 and D2} , the frequency _f1 , which is set at the resonance frequency of the filters F1 and _F2 , _is
Only the f ₂ signal is selectively detected. this frequency
Since f ₁ and f ₂ are set to be the same as the frequencies f _T1 and f _T2 of the two types of transmission signals V _T transmitted from the transmitter T,
Noise signals with different frequencies due to illumination light and the like are now removed. The detection outputs V _D1 and V _D2 selectively detected in this way are output from the inverters I ₁ to
I ₆ and NOR gates N ₁ to _{N 4} are input to the noise cancel circuit 13, and both detection outputs V _D1 ,
The phase difference of V _D2 is checked to determine whether the signal is a noise signal or a normal signal. In other words, when both detection outputs V _D1 and V _D2 are input in the same phase, they are canceled as noise signals, and when they are input with a predetermined phase difference, the first input detection output V _D1
The detected output rises in synchronization with
A load control signal V _L consisting of a pulse signal falling in synchronization with V _D2 is output. The load control signal V _L regenerated in this way is inputted to the control signal generation circuit 3 formed by the logic operation processing IC 3a via the output circuit 14 consisting of the transistor Q ₆ and the Zener diode ZD, and is input to the control signal generation circuit 3 formed by the logic operation processing IC 3a. A control signal V _C to which address data set in step 7 is added is formed. This control signal V _C
The address data and each bit of the load control signal V _L are time-divisionally transmitted in synchronization with the half cycle of the commercial power supply, and are modulated high-frequency signals. This control signal V _C is a transistor
The signal is sent to the power line l via the transmitting circuit 4 consisting of _Q7 to _Q11 . When the terminal device 5 receives the control signal V _C superimposed on the commercial power supply and receives the control signal V _C including address data that matches its own unique address, it outputs the load control signal following the address data.
It takes in V _L and controls the load control relay to control the load L on and off. Next, when the manual switch 6 is turned on and off, the pseudo load signal V _L ' is input to the control signal generation circuit 3, and the receiver T A control signal V _C is sent from the load L
is controlled on and off. In the embodiment, the control signal generation circuit 3 outputs the control signal V _C made of a modulated high frequency signal, but the modulation circuit of the carrier high frequency using the address data and the load control signal V _L is It may also be provided within the transmitting circuit 4.

The present invention is configured as described above, and includes a light receiving section that receives modulated light, a light receiving signal processing circuit that regenerates a load control signal from a light receiving signal output from the light receiving section, and a light receiving section that receives modulated light. A receiver consisting of a control signal generation circuit that generates a control signal for the set load to be controlled and a transmission circuit that sends the control signal to the power line is installed on the wall, and the control signal that is sent from the receiver is installed on the wall. A terminal device that receives signals via the above power line and controls the load is connected to the above power line, and the distance between the light receiving part of the receiver and the load can be set arbitrarily, so new wiring is not required. It has the advantage that the operable range of the optical remote control switch can be set arbitrarily according to the situation at the site without any construction work, and since the receiver is installed on the wall, it is not commonly used. It has the advantage that it has almost the same appearance as a wall switch, so it does not spoil the aesthetics of the room. Furthermore, by providing the receiver with a manual switch that inputs a pseudo load control signal equivalent to the load control signal into the control signal generation circuit, it is possible to control the load without using a transmitter. It can be made to have the same functionality as a switch,
Further, in the present invention, the light receiving window of the light receiving section and a manual switch for inputting a pseudo load control signal equivalent to the load control signal to the control signal generation circuit are arranged side by side on the front side of the receiver, and the receiver can be manufactured as an off-the-shelf product. It is attached to a base made of a module of a wiring device, and is attached to a recessed box buried in a wall surface by the base, and the front surface of the receiver is covered with a front plate, and the light receiving window is opened from the light transmitting window of the front plate. Since the manual switches are exposed from the protruding windows, it is possible to use the built-in boxes of ready-made wiring devices, and it can be turned in the same way as other wall switches. This has the effect of allowing advance wiring to be performed along with other wiring when constructing a building. Furthermore, by arranging the load selection switch for setting the load to be controlled in a position covered by the front plate of the receiver, there is an advantage that the load to be controlled will not be changed inadvertently.

[Brief explanation of drawings]

Fig. 1 is a block circuit diagram of an embodiment of the present invention, Fig. 2 is a specific circuit diagram of the main parts of the same, Fig. 3 is an exploded perspective view of the main parts of the same, and Fig. 4 is a diagram showing an example of the arrangement of the same.
FIG. 5 is a diagram showing an example of a conventional arrangement. T is the transmitter, R is the receiver, L is the load, P is the modulated light, W is the wall, 1 is the light receiving section, 2 is the light receiving signal processing circuit, 3 is the control signal generation circuit, 4 is the transmitting circuit, 5 is the terminal 6 is a load selection switch, 7 is a manual switch, and 22 is a front plate.

Claims (1)

[Claims] 1. A transmitter that emits modulated light modulated based on a load control signal, a light receiver that receives the modulated light from the transmitter, and a load control signal from the light reception signal output from the light receiver. A receiver consisting of a received light signal processing circuit that regenerates a received light signal, a control signal generation circuit that generates a control signal for a load to be controlled that is set in advance based on the regenerated load control signal, and a transmission circuit that sends the control signal to a power line. and a terminal device that receives a control signal sent from the receiver to control the load on and off, the light receiving window of the light receiving section and the pseudo load control signal equivalent to the load control signal being controlled as described above. A manual switch that inputs to the signal generation circuit is installed in parallel on the front side of the receiver, and the receiver is attached to a base made of a module of ready-made wiring equipment, and the receiver is attached to a recessed box buried in the wall surface using the base. At the same time, the front surface of the receiver is covered with a front plate, and the light-receiving window is exposed through the light-transmitting window of the front plate, and the manual switch is exposed through the manual switch protruding window arranged in parallel with the light-transmitting window. . 2. The optical remote control switch according to claim 1, characterized in that a load selection switch for setting the load to be controlled is disposed at a position covered by the front plate of the receiver.