JPH0452039B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical wireless receiver that receives an optical wireless signal from an optical wireless transmitter and controls the operation of a load in accordance with the optical wireless signal.

[Background Art] As a conventional optical wireless receiver of this type, there is a ceiling-mounted type as shown in FIG. This optical wireless receiver A' consists of a base 14 that is attached to a ceiling surface, and a receiver head 15 that is screwed onto the base 14 and has a light receiving section 16 at the center of its lower surface.

By the way, this type of ceiling-mounted optical wireless receiver A' is suitable for large open spaces such as offices, but may not be suitable for relatively small rooms such as ordinary homes. . In other words, in a typical home, there are cases where interior lighting is installed on the ceiling and you do not want to install unnecessary items on the ceiling, but in this case, the conventional optical wireless receiver A′ is too conspicuous, so it is installed on the ceiling. It is not possible.

Therefore, we developed the 9th Optical Wireless Receiver A, which can be installed neatly and visually on the wall.
What is shown in the figure is provided. The casing 1 of this optical wireless receiver A is composed of a body 1a and a cover 1b, and is formed to the module dimensions of a standardized ready-made wiring device, so that it can be used similarly to a ready-made embedded wiring device. It is designed so that it can be mounted on a wall. A light-receiving window 3 is formed on the front surface of the cover 1b of this optical wireless receiver A, and a light-transmitting cover 17 that transmits light is attached thereto. The casing 1 houses components such as a light receiving element (not shown), which is housed in a shield case 30 with its light receiving surface exposed to the light receiving window 3 side. It is designed to let in light. Also, this cover 1
An engaging portion (not shown) is formed on the side surface of b to engage with the mounting frame 2 used when attaching the above-mentioned ready-made embedded wiring device to a wall surface. In addition,
The above-mentioned engaging portions are provided so that they can be attached to either the metal or synthetic resin attachment frame 2, respectively.

This optical wireless receiver A is attached to the mounting frame 2 at the above-mentioned engagement portion, and by screwing a box screw into the box hole 18 of the mounting frame 2,
It is attached to a recessed box (not shown) embedded in the wall surface. Note that a decorative plate (not shown) is attached to the upper surface of the mounting frame 2 attached to the wall surface by screwing plate screws into the plate holes 19.

In this way, if the optical wireless receiver A can be embedded and installed in the wall like a ready-made wiring device, the optical wireless receiver A
It can be installed neatly and visually on the wall, without compromising the interior design of the ceiling.

Here, this type of optical wireless receiver A includes:
As shown in FIG. 10, a remote control switch C for manually switching the operation of a load L such as a lighting fixture can be installed in series. In this way, as shown in FIG. 11, an elderly person or a sick person can control the operating state of a load L such as a lighting fixture while lying down, and can also manually control the load L using a remote control switch C. The remote control switch C can also be mounted using a ready-made mounting frame 2, and the remote control switch C is connected to the optical wireless receiver A, and two screws are attached to the front side of the optical wireless receiver A using plate screws 29.
A decorative plate 28 of the size of a ream is attached.

However, as mentioned above, optical wireless receiver A
If the device is buried in a wall like a ready-made wiring device, it may become impossible to receive optical wireless signals due to the arrangement of furniture, etc. Therefore, in order to deal with this case,
It is conceivable to install embedded boxes in advance at a plurality of locations in the room so that an appropriate location for installing the optical wireless receiver A can be selected depending on the arrangement of furniture and the like. However, when installing the optical wireless receiver A in this case, the same work as during construction is required, and the user cannot easily change the installation location of the optical wireless receiver A.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to provide an optical wireless receiver whose installation location can be easily changed by a user.

[Disclosure of the Invention] (Structure) The present invention is characterized in that the casing is formed to the modular dimensions of a standardized ready-made wiring device, and the wiring device is detachably attached to an outlet buried in the wall surface in advance using a mounting frame for attaching the wiring device to the wall surface. By providing a mounting part that can be attached to the device, for example, it is possible to install electrical outlets at multiple appropriate locations in the room, select the electrical outlets as appropriate, and install the optical wireless receiver at the appropriate locations. To enable even a person to easily change the installation location of an optical wireless receiver.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 7.
The optical transmitter/receiver equipped with the optical wireless receiver of this embodiment connects a central controller and a terminal device with a pair of signal lines, and transmits control data, monitoring data, etc. in a time-division multiplex manner to remotely control a load. It is used in supervisory control systems.

In this remote monitoring and control system, as shown in FIG.
are connected by a pair of signal lines 7, and the central control unit 4
The transmission signal Vs is sent from the terminal device 5 through the signal line 7 to each terminal device 5,
6, the operating status and load of switches S ₁ to S ₄
Monitor the operating status of L ₁ ~ _{L 4} and load L ₁ ~ _{L 4}
Controls the operation of As shown in Fig. 4, this transmission signal Vs includes a start pulse signal ST indicating the start of signal transmission, and a mode data signal indicating the signal mode.
MD, address data signal AD to call terminals 5 and 6, control data signal to control loads L ₁ to L ₄
CD, checksum data signal CS, and return signal period that sets the return period from the terminals 5 and 6
This is a bipolar (±24V) time-division multiplexed signal consisting of a WT, and data is transmitted using pulse width modulation.
When the address data of the transmission signal Vs received via each terminal device 5, 6 and the signal line 7 matches its own unique address data, it takes in the control data of the transmission signal Vs and returns the transmission signal Vs. In synchronization with the signal period WT, the monitoring data signal is sent back as a current mode signal (a signal sent by short-circuiting the signal lines 4 via an appropriate low impedance).

Next, an optical transmitting/receiving device that transmits and receives light using infrared rays or the like will be described. This optical transmitter/receiver is
As shown in FIG. 5, an optical wireless transmitter B,
The satellite receiver A serves as an optical wireless receiver that receives the optical wireless signal from the optical wireless transmitter B. A unique address is set for each optical wireless transmitter B, and control data for on/off control of a load L such as a lighting device is transmitted together with address data as a transmission code as an optical wireless signal as shown in FIG. 6a. Sent. The transmission code of this optical wireless signal is the address data as shown in Figure 7.
It consists of AD and control data CD. here,
Mode data SI before address data AD
is a mode for selecting whether to perform other system operations such as a time-division multiplex transmission remote control system, or to perform individual operations using the optical transmitter/receiver. The satellite receiver A receives the optical signal from the optical wireless transmitter B with an optical receiver such as a PIN diode, converts it into a baseband signal as shown in FIG. 6b, and outputs the signal. The baseband signal from this satellite receiver A is transmitted through a dedicated signal line 10.
and is transmitted to the system receiver 9 and a plurality of individual receivers 8 connected to this signal line 10. System receiver 9 is satellite receiver A
It receives baseband signals from
The individual receivers 8 individually control loads L such as lighting equipment according to the address data AD.

The optical wireless signal transmitted from the optical wireless transmitter B is received by the nearest satellite receiver A, converted to a baseband signal, and transmitted to each receiver 8, 9 via a wired signal line 10.
If the mode data SI of the transmission code is selected by individual operation, the system receiver 9 does not respond and the individual receiver 8 becomes the target. Each individual receiver 8 checks the address of the baseband signal, and if it matches the set address, controls the operation of the load L. Here, if the mode data SI of the optical wireless signal from the optical wireless transmitter B selects system operation, the system receiver 9 will respond. That is, the system receiver 9 is used as the monitoring terminal 5 and processing is performed according to the procedure of the multiplex transmission remote monitoring and control system described above.

The optical wireless receiver A of this embodiment is not attached to the mounting frame 2 itself, but an outlet 20 is buried in the wall surface in advance, and the optical wireless receiver A is detachably attached to the outlet 20. It has been made possible to do so.
Here, the casing 21 of the outlet 20 is formed to the dimensions of a standardized ready-made wiring device module, so that the outlet 20 can be attached to a wall surface using a ready-made mounting frame 2. The front side of this outlet 20 has a mounting hole 22 for attaching and detaching the optical wireless receiver A, and the back side has a connection for connecting the signal line 10 connected to the individual receiver 8 or the system receiver 9. A terminal 23 is provided.

The optical wireless receiver A is connected to the mounting hole 22 of the outlet 20 from the back of the casing 1'.
A plug piece 24 to be inserted into is provided protrudingly.

In the case of this embodiment, if a plurality of outlets 20 are installed in each room in advance, the optical wireless receiver A can be easily attached to an appropriate outlet 20 according to the arrangement of furniture, etc. in the room. Therefore, it can be easily adapted to, for example, changing the appearance of a room.

[Effects of the Invention] As described above, the present invention provides a cover for an outlet whose casing is formed to the modular dimensions of a standardized ready-made wiring device and which is buried in the wall surface using a mounting frame for attaching the wiring device to the wall surface. Since the mounting part is removably attached to the mounting part, for example, if you install electrical outlets at multiple appropriate locations in the room in advance, you can select the electrical outlets appropriately and place the optical wireless receiver at the appropriate location. If the optical wireless receiver is no longer able to receive optical wireless signals well when the furniture etc. are rearranged due to a room remodel, the user can easily change the installation location of the optical wireless receiver. Achieve the desired effect.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a wall mounting structure of an optical wireless receiver according to an embodiment of the present invention, FIG. 2 is a sectional view of the optical wireless receiver, and FIG. 3 is a schematic configuration diagram of a remote monitoring and control system. Figure 4 shows the format of the transmission signal as above, Figure 5 is a schematic configuration diagram of the optical transmitter/receiver, Figure 6 is the signal waveform diagram as above, Figure 7 is the format of the transmission code as above, Figures 8 a to c are A side view, a plan view, and a plan view of the base of a conventional ceiling-mounted type optical wireless receiver, and FIG. 9 is a front view and cross-section showing a conventional wall-mounted type optical wireless receiver attached to a mounting frame. 10 is a front view of the case where the same as above and a remote control switch are installed in series, and FIG. 11 is an explanatory view of the operation method of same as above. A is an optical wireless receiver, B is an optical wireless transmitter, 2 is a mounting frame, 20 is an outlet, 21 is a casing, 22 is a mounting hole, and 24 is a plug piece.

Claims (1)

[Claims] 1. An optical wireless receiver that receives an optical wireless signal from an optical wireless transmitter and controls the operation of a load according to the optical wireless signal, the casing of which is formed into the modular dimensions of a standardized ready-made wiring device. An optical wireless receiver comprising: a mounting part that is detachably attached to an outlet that is buried in advance in a wall using a mounting frame for attaching the wiring device to the wall.