JPH0834635B2 - Wireless system receiver - Google Patents

Description

TECHNICAL FIELD The present invention relates to a remote control device for time division multiplexing transmission,
The present invention relates to a receiver of a wireless system used for a wireless system that transmits an optical signal.

BACKGROUND ART A wireless system of this type will be described in detail later,
A wireless signal that is equipped with an operation switch and a plurality of receivers that receive wireless signals composed of address data transmitted from the transmitter, control data for load control, etc., and time-division multiplexed transmitted from the transmitter. In response to this, the receiver having the matched address controls the load based on the control data following the address data of the transmission code transmitted through the signal line. The receiver is provided with a plurality of light receiving elements that receive light from a plurality of different directions, respectively, so that the optical signal transmitted from the transmitter is received within a range of 360 °. By the way, this type of conventional receiver has not been able to select the light receiving direction. Therefore, when the receiver is mounted on a construction surface such as a ceiling, there is a problem that it is easily affected by lighting equipment. .
In other words, if the receiver mounting position is prioritized, there is a risk that the light from the lighting fixture B will be received by the receiver A and cause a malfunction as shown in FIG. 16. In order to prevent this malfunction, the receiver A If the light receiving sensitivity of the transmitter is lowered, it becomes difficult for the optical signal from the transmitter (not shown) to reach the receiver A, the control distance of the transmitter A by the transmitter is shortened, and conversely, due to the light emitted by the lighting fixture B. When the receiver A is attached so as to avoid the influence, there is a problem that the attachment position of the receiver A is restricted.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a wireless system which can be installed at any place without being affected by light from a lighting fixture or the like. To provide the receiver of.

DISCLOSURE OF THE INVENTION (Structure) The present invention includes a transmitter having an operation switch, and a plurality of receivers for receiving wireless signals including address data transmitted from the transmitter, control data for load control, and the like. A wireless system in which a receiver that receives a time-division-multiplexed wireless signal transmitted from a transmitter and has an identical address controls a load based on control data that follows the address data of a transmission code transmitted through a signal line It has a dome-shaped translucent cover that is attached to the upper surface of the receiver body and transmits the transmission signal of the transmitter that is incident from all directions, and blocks the light from the transmitter from a specific direction. The light-shielding device is attached to the light-transmitting cover, and the light-shielding device shields the direction affected by the light of the lighting equipment so that the light-receiving direction of the receiver can be selected. To reduce the influence of light, such as light fixtures, it is thereby obtained by the eliminate the restriction of the mounting location of the receiver.

Example 1 An example of the present invention will be described below with reference to the drawings. First, a remote control device using the receiver of this embodiment will be described with reference to FIGS. 8 and 9. This remote control device controls the load by transmitting / receiving signals by time division multiplexing transmission of signals through a dedicated signal line, and FIG. 8 shows a schematic configuration of this remote control device. Central control unit 1;
A plurality of monitoring terminals 2 and control terminals 3 to which unique addresses are set are connected by a pair of signal lines 4. Transmission signal sent from the central controller 1 to the signal line 4
As shown in FIG. 9 (a), V _S is a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, an address data signal AD for calling the terminals 2 and 3,
It is a multi-pole (± 24V) time division multiplex signal consisting of a control data signal CD that controls the load 7, a checksum data signal CS, and a return standby signal WT that sets the return signal period from the terminals 2 and 3, and is a pulse. Data is adapted to be transmitted by width modulation. In each of the terminals 2 and 3, when the address data of the transmission signal V _S received through the signal line 4 and its own unique address data match, the control data of the transmission signal V _S is taken in and the transmission signal V _S is received. The monitor data signal is sent back as a current mode signal (a signal sent by short-circuiting between the signal lines 4 via an appropriate low impedance) in synchronization with the return standby signal WT of V _S.

Further, the dummy transmission signal V _S is constantly sent to the central control device 1 and the ninth transmission signal sent from any one of the monitoring terminals 2 is returned.
When the interrupt signal Vi as shown in FIG. 3B is received, the interrupt generating terminal device 2 is detected, and the interrupt process for accessing the terminal device 2 and returning the monitoring data is performed. On the other hand, when the monitoring terminal 2 receives a monitoring input, the interrupt signal Vi is generated in synchronization with the start pulse signal ST of the dummy transmission signal V _S , and the central controller 1
Address verification mode return wait signal of the transmission signal V _S of from
The central control unit 1 returns its own unique address data in synchronization with the WT, and when the central control unit 1 transmits the interrupt access mode transmission signal V _S in response to the interrupt, the monitoring corresponding to the monitoring input. The data is returned, and the control data to be transmitted to the control terminal 3 is created based on the monitor data returned from the monitoring terminal 2 to the central controller 1. Further, the monitoring terminal device 2 is provided with an individual operation switch 5 for individually controlling a load 7 such as a lighting. Therefore, the transmission signal V _{S including} the control data from the monitoring terminal 2 is time division multiplexed and
The corresponding control terminal 3 takes in control data and drives the remote control relay 6 to control the load 7.

Next, a wireless system by optical communication coupled with the remote control device will be described. FIG. 10 is a schematic configuration diagram of the wireless system itself, and FIG. 14 is a schematic configuration diagram in which a part of the wireless system and the remote control device described above are combined. As shown in FIG. 14, the transmitter 8 that emits light is a wall-hanging type that is hung on a wall 22, a desk-standing type that is placed on a desk 23, or a conference desk 24.
There are things that can be used by placing it in. A plurality of satellite receivers 9 for receiving the optical transmission code from the transmitter 8 are installed on the surface of the ceiling 25, and a number of controlled lighting fixtures 26 are also installed. From the transmitter 8, for example, a transmission code in which control data for controlling on / off of the luminaire 26 is combined with address data is transmitted by an optical wireless signal shown in FIG. 11 (a). The transmission code of this optical wireless signal is the 12th
As shown in the figure, it comprises address data AD and control data CD. Here, the mode data SI preceding the address data AD is a mode for selecting whether to perform another system operation such as a remote control device for time division multiplex transmission or an individual operation in the wireless system. Specifically, as shown in FIG. 13, the transmitter 8 emits light including an address setting unit 29 that sets an address, a signal processing unit 30 that creates a transmission code, and a light emitting diode that transmits the transmission code as an optical wireless signal. It is composed of a part 31 and the like.

On the other hand, the satellite receiver 9 that receives the optical wireless signal is configured as follows. That is, as shown in FIG. 10, an optical receiver 10 which receives an optical wireless signal from an oscillator 8, a tuning circuit 11 having a tuning function for detecting a carrier wave of an output signal from the optical receiver 10, and a tuning circuit. The output of the circuit 11 is converted into a baseband signal as shown in FIG.
Is configured.

The baseband signal from the satellite receiver 9 is sent to a dedicated signal line 13 and transmitted to the system receiver 14 and a plurality of individual receivers 18 connected to the signal line 13.
The system receiver 14 constituting the wireless interface unit receives the baseband signals from the satellite receiver 9 in a lump and selects the receiving unit 15 for receiving the baseband signals and the above-mentioned system operation or individual operation. The setting unit 17 includes a system interface 16 and the like to which address data and control data obtained by converting a baseband signal into a binary parallel signal by the receiving unit 15 are input. The system interface 16 is connected to the signal line 4 of the remote control device and is processed according to the procedure on the side of the central control device 1. Only the signal format set by the receiving unit 15 of the system receiver 14 is extracted from the baseband signal, the setting unit 17 determines whether the system operation or the individual operation, and the received address data and control data are received from the receiving unit 15. Output to system interface 16.

As shown in FIG. 10, the individual receiver 18 includes a receiving unit 19 for receiving the baseband signal from the satellite receiver 9 and an address setting unit 20 for setting a unique address for each.
And a load interface 21 for driving a load control relay and the like according to control data. That is,
In this individual receiver 18, the baseband signal and the set address of each individual receiver 18 are queried, and if they match, the load interface 21 drives a load control relay or the like to load the load 27 such as the above lighting equipment. To control. A series circuit of a contact 21a of a relay driven by the load interface 21 and a load 27 is connected to the power supply 28.

Then, the optical wireless signal transmitted from the transmitter 8 is received by the satellite receiver 9 nearest to the tuning circuit.
Only the signal of the frequency determined by 11 is detected, converted into a baseband signal by the baseband conversion unit 12, and transmitted to each of the receivers 14 and 18 via the signal line 13. If the mode data SI of the transmission code selects the individual operation, the system receiver 14 does not respond and the individual receiver 18 is the target.
The address of the baseband signal is queried in each individual receiver 18, and if it matches the set address, the load interface 21 drives the relay based on the control data to control the load 27. Here, if the mode data SI of the optical wireless signal from the transmitter 8 selects the system operation, the system receiver 14 responds. That is, the address and control data obtained by converting the baseband signal into a binary parallel signal are input to the system interface 16 and processed according to the procedure on the multiplex transmission control side.

FIG. 14 is a block diagram showing a combination of a remote control device and a wireless system including an oscillator 8, a satellite receiver 9 and a system receiver 14. In FIG. 14, a distribution board 36 is provided with a central controller 1, a terminal 3 having a remote control relay, a system receiver 14, and the like.
Further, a transformer 35 for supplying power to the terminal device 3 is also arranged. Therefore, the optical wireless signal transmitted from the transmitter 8 is received by the satellite receiver 9, converted into a baseband signal by the satellite receiver 9 and transmitted to the system receiver 14 via the signal line 13. Then, the address and control data of the transmitter 8 are stored in the system receiver 14, which becomes the address of the terminal device 3, and the system receiver 14 is accessed by the central controller 1 and, as described above, the central controller 1 side. Will be processed according to the usual procedure.

The above is the overall description of the combination of the wireless system with the remote control device including the present embodiment. The satellite receiver (hereinafter, simply referred to as the receiver), which is a feature of the present embodiment, will be described below. As shown in FIG. 1, the receiver is provided with a dome-shaped translucent cover 40, which transmits the transmission signal of the transmitter incident from the entire circumference direction and is attached to the upper surface of the receiver main body 39. A light blocking device that blocks light from a transmitter from a specific direction is attached to the translucent cover 40.
In this embodiment, the light-shielding device is a light-transmitting cover.
A light-shielding hood 41 formed in a shape that shields a transmission signal incident from a specific angle direction of 40 is used, and this light-shielding hood 41 is shown in FIG. The light shielding hood 41 is formed in a dome shape having a spherical upper portion and a cylindrical lower portion. For example, as shown in FIG. 1, the lower half is left and the upper half is cut out to transmit an optical signal from the transmitter. A part is formed, and the uncut portion becomes the light shielding part 41a. The shape of the light-shielding portion 41a may be formed so that the upper portion of the light-transmitting cover 40 is left uncut as shown in FIG. Further, the shape can also be appropriately formed according to the usage state. This shading hood 41
Is attached to the receiver main body 39 by engaging protrusions 42 provided around the lower peripheral surface of the light shielding hood 41, and engaging grooves 43 on the inner peripheral surface of the opening formed on the upper surface of the receiver main body 39. Done in. That is, the light-shielding cover 41a is made of synthetic resin or the like, and the flexibility of the light-shielding cover 41 is used to fit the engaging protrusion 42 into the engaging groove 43. Attach it to the opening. The light-shielding cover 41 is engaged with the engagement groove 43 and the engagement protrusion 42 so as to be rotatable in the opening of the receiver body 39,
By rotating the light shielding cover 41, the direction of the light shielding portion 41a can be changed according to the direction affected by light from a lighting fixture or the like. The light-transmitting cover 40 is attached from the inside of the receiver body 39 into the light-shielding hood 41.
40 is attached to a printed circuit board 45 on which a light receiving element 44 is mounted, and is fixed by attaching the printed circuit board 45 to a receiver main body 39.

The operation of the shading hood 41 of this embodiment will be described with reference to FIG. When the fluorescent lamp 46 of the luminaire is positioned in the illustrated state with respect to the receiver, the receiver emits light from the fluorescent lamp 46 as indicated by the arrow in the figure. Therefore, the light shielding portion 41a is
Rotate the light blocking hood 41 so that the fluorescent lamp 46
By blocking the above light by the light blocking section 41a, the receiver is prevented from malfunctioning due to the light of this lighting fixture. Moreover, as described above, since it is possible to prevent the influence of light from a lighting fixture or the like, it is no longer possible to regulate the mounting location of the receiver.

By the way, if the light shielding hood 41 is freely rotatable as described above, there is an advantage that the light shielding direction can be easily changed. However, for example, if the light shielding hood 41 is easily rotated by some force, It is conceivable that the shading hood 41 may not be able to exert its original function. Therefore, in order to prevent the light-shielding hood 41 from easily rotating, a rotation restricting means is provided in either the receiver body 39 or the light-transmitting cover 40 and the light-shielding hood 41 to prevent the light-shielding hood 41 from easily rotating. May be. FIGS. 5 and 6 show the light-shielding hood 41 and the translucent cover 40 in which the light-shielding hood 41 is prevented from easily rotating. As shown in FIG. 6, a plurality of protrusions 47 as engaged means are provided around the outer peripheral surface of the lower portion of the translucent cover 40, and the protrusions 47 are fitted into the light shielding hood 41 as shown in FIG. Notch groove as engaging means
48 are formed. It should be noted that a holding piece is provided on the inner surface side of the light shielding hood 41 along the cutout groove 48 so as to slightly supplement the engaging force of the cutout groove 48.
49 is projected. By the way, the engagement state between the cutout groove 48 and the protrusion 47 is such that when the light shielding hood 41 is manually rotated, another protrusion 47 is engaged with the cutout groove 48 as necessary. Thus, the light blocking direction of the light blocking hood 41 can be changed.

(Embodiment 2) FIG. 7 shows another embodiment of the present invention. In this embodiment, a cylindrical light-shielding hood 50 that covers the lower peripheral surface of the light-transmitting cover 40 is used as a light-shielding device. The amount of protrusion of the hood 50 from the upper surface of the receiver main body 39 is made variable. For example, as shown in FIG. 17, when the lighting fixture B is an embedded type that is embedded in the ceiling 51, the light emitted from the lighting fixture B and exiting from the opening 52 is regulated at the edge of the opening 52. Is
Even if the light reaches only below the dotted line in the figure, and even if this light is applied to the light receiving section 52 of the receiver A, most of the light applied to the upper part of the light receiving section 52 is received by the light receiving element inside the receiving section 52. Only when the light from the luminaire is applied to the shaded area in FIG. 18, the light from the luminaire is strongly affected. Therefore, in the case of such an embedded lighting fixture B,
As shown in the first embodiment, it is not necessary to shield the light shielding cover 41 up to the upper portion of the light transmitting cover 40. Therefore, as shown in FIG. 7, the light-shielding hood 50 is formed in a cylindrical shape that covers the lower peripheral edge of the light-transmitting cover 40 so that the shaded portion in FIG. 18 is shielded from light. The height of the receiver body 39 or the mounting position of the receiver affects the state of being affected by the light of the lighting equipment.For example, a screw thread is formed on the peripheral surface of the light shielding hood 50, and the receiver body is A thread groove is formed on the inner surface of the opening of 39, and the shading hood 50 is screwed and attached to the receiver body 39.
You can adjust the height of the light-shielding part of the
The light-transmitting cover 40 is shielded from light as much as necessary. In addition, using an embedded lighting fixture as lighting,
As shown in the figure, in the receiver provided with the receiving stand 51 for attaching the receiver main body 39 to the ceiling 51, the receiver main body 39 is screwed to the receiving stand 53 without using the light shielding hood 50. Then, even if the height of the receiver is adjusted, the same effect as that of the present embodiment can be obtained.

[Effects of the Invention] As described above, the present invention includes a transmitter having an operation switch and a plurality of receivers for receiving wireless signals including address data transmitted from the transmitter, control data for load control, and the like. The receiver has a matching address when receiving a time-division-multiplexed wireless signal from the transmitter.The receiver controls the load based on the control data following the address data of the transmission code sent through the signal line. It is used in the system and is equipped with a dome-shaped translucent cover that is attached to the top surface of the receiver body and transmits the transmission signal of the transmitter that is incident from all directions, and blocks the light from the transmitter from a specific direction. Since the light-shielding device is attached to the light-transmitting cover, the light-shielding device shields the direction affected by the light of the lighting equipment so that the light-receiving direction of the receiver can be selected. There is an effect that the influence of light from a lighting fixture or the like is reduced, and thereby the regulation of the mounting location of the receiver can be eliminated.

[Brief description of drawings]

FIG. 1 is a front view of an essential part of an embodiment of the present invention, and FIG. 2 (a).
Is a perspective view of a light-shielding hood used in the same as above, FIG. 3B is a side view, FIG. 3 is a sectional view of relevant parts in the same, FIG. 4 is a diagram for explaining the operation of the same, and FIG. FIG. 6 is a perspective view showing a light-shielding hood of FIG. 6, FIG. 6 is a front view of another translucent cover used therein, and FIG. 7 is a front view of a main part of another embodiment of the present invention.
FIG. 8 is a schematic configuration diagram of a remote control device using the same as above,
FIG. 9 is an operation explanatory diagram of the same as above, FIG. 10 is a schematic configuration diagram of a wireless system combined with a remote control device, and FIG.
FIG. 12 and FIG. 12 are diagrams for explaining the operation of the above, FIG. 13 is a configuration diagram of a transmitter of a wireless system, FIG. 14 is a schematic configuration diagram of a remote control device combining the wireless systems in which the same is used, and FIG. 16 is a schematic configuration diagram showing an application example of the above.
FIG. 17 is a mounting explanatory diagram of a conventional example, FIG. 17 is a mounting explanatory diagram of another conventional example, and FIG. 18 is an explanatory diagram showing an influence of a lighting fixture on the same. 8 is a transmitter, 9 is a satellite receiver, 13 is a signal line, 39 is a receiver main body, 40 is a translucent cover, and 41 and 50 are light-shielding hoods.

Claims (4)

[Claims] 1. A transmitter comprising an operating switch, and a plurality of receivers for receiving wireless signals including address data transmitted from the transmitter, control data for load control, etc., and time division multiplexing from the transmitter. The receiver whose address matches the received wireless signal is used in a wireless system that controls the load based on the control data following the address data of the transmission code sent through the signal line. The light-transmitting cover is attached to the upper surface of the device and includes a dome-shaped light-transmitting cover that transmits the signal transmitted from the transmitter that is incident from all directions, and the light-shielding device that shields light from the transmitter from a specific direction. A receiver of a wireless system, characterized in that the receiver is attached to the. 2. The light shielding device is a light shielding hood formed so as to shield a transmission signal incident from a specific angle direction of the light transmitting cover, and a lower peripheral edge of the light shielding hood is arranged in a circumferential direction of the light transmitting cover. The receiver of the wireless system according to claim 1, wherein the receiver is rotatably attached to the receiver main body. 3. An engaging means for restricting rotation of the light-shielding hood is formed on the lower peripheral surface of the light-shielding hood by engaging with an engaged means of the receiver body or the light-transmitting cover. A receiver for a wireless system according to claim 2. 4. The light-shielding device is characterized in that a cylindrical light-shielding hood covering a lower peripheral surface of a light-transmitting cover is used, and an amount of protrusion of the light-shielding hood from an upper surface of a receiver main body is variable. A receiver for a wireless system according to claim 1.