FIELD OF THE INVENTION
This invention relates to systems for remotely controlling multiple lighting fixtures, and is directed more particularly to a hybrid system for wirelessly controlling such fixtures in a more simplified and more economical manner.
BACKGROUND OF THE INVENTION
Wireless systems for remotely controlling lighting fixtures are well known and have been in use for many years. One such system, which uses a DMX protocol, utilizes a wireless transmitter to send control signals to each of a plurality of controllable devices, such as lighting fixtures. Each of the controllable devices is provided with a wireless receiver operative to receive and respond to a signal intended for that specific device. Such systems are widely used in theatrical installations, where the controllable devices can be employed for lighting effects, sound effects and other actions, all remotely controllable by wireless transmissions to the individual devices. These systems, while effective, are relatively costly because of the requirement for providing each individual controllable device with a wireless receiver. The cost of the individual receivers may be on the order of $200.00 each.
SUMMARY OF THE INVENTION
The present invention relates to an improved system for wirelessly controlling multiple fixtures, using one or a limited number of wireless receivers. Our improved system incorporates a track lighting system of a known construction, such as the “CONTROL Track” product offered commercially by Lighting Services, Inc. of Stony Point, NY. The CONTROL Track incorporates a pair of power conductors on one internal side wall and three data conductors on the other internal side wall. These track systems can be set up to use one of several control protocols, such as 0-10v, DALI, and DMX. The power conductors are hard wired to a power source, and historically the data conductors have been hard wired to a control source. In accordance with the invention, however, the track system is provided with a wireless receiver module, which can be located at any point on the track. The receiver module engages with the power conductors of the track for power input to the receiver and with the data conductors of the track for control output from the receiver. The control output from the receiver module can provide independent control of a plurality of individually addressable and controllable output devices that can be removably mounted and positioned anywhere along the track system.
For a better understanding of the invention reference can be to the accompanying drawings and to the following specification.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1 and 2 are cross sectional views of track elements of a construction suitable for utilization in the system of the invention, FIG. 1 illustrating a surface-mounted track section and FIG. 2 illustrating a recessed track section.
FIG. 3 is a side elevational view illustrating one end of a track section having an end feed module attached thereto containing a wireless receiver.
FIGS. 4 and 5 are a top plan and end views, respectively, of the assembled structure of FIG. 3.
FIG. 6 is a top orthographic view of the structure of FIG. 3.
FIG. 7 is a top orthographic view, similar to FIG. 6, illustrating the end feed module with its cover removed.
FIGS. 8-11 are top orthographic views of receiver modules for installation in a surface track system, illustrating straight, L-shaped, T-shaped and X-shaped modules, respectively.
FIG. 12 is a top orthographic view of a wireless end module for mounting on a recessed track section.
FIG. 13 is a top orthographic view of the module of FIG. 12 attached to a track section.
FIG. 14 is a view of an output fixture mounted on a track section, with the latter shown in cross section.
FIG. 15 is an enlarged view of FIG. 14 illustrating details of the mounting and electrical connection of the output fixture to the track section.
FIG. 16 is a top orthographic view of a “portable” form of wireless receiver module adapted to be mounted to a track lighting system in a wide variety of positions, similar to the manner in which output fixtures are mounted.
FIG. 17 illustrates the module of FIG. 16 mounted to a track section of a track lighting system.
FIG. 18 illustrates an alternate form of “portable” receiver module adapted for mounting in various locations along a track system.
FIG. 19 is a schematic illustration of a track lighting system provided with a single receiver/control module independently controlling a plurality of track-mounted output fixtures.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, FIG. 1 shows cross sectional details of a typical track section 20 forming part of a track system, such as a CONTROL Track system offered commercially by Lighting Services, Inc. of Stony Point, NY. The section is an extrusion of aluminum and has vertical side walls 21, 22 and an open bottom 23. Insulators 24, 25, typically of plastic material, are secured to the interior of the track section 20 on the respective side walls 21, 22. The insulator 24 is provided with a pair of inwardly opening retaining grooves for the reception of power conductors 26, 27 exposed to the interior of the track section 20. The opposite side insulator 25 is provided with three inwardly opening grooves which receive data conductors 28-30 exposed to the interior of the track section. A plurality of the track sections can be assembled in various configurations, as is well known in the industry, with the power and data conductors being appropriately connected between adjacent track sections to provide power and data throughout the entire system.
The track section 31 of FIG. 2 is configured externally for recessed mounting in a ceiling or other overhead structure but otherwise corresponds functionally to the surface-mounted section 20 of FIG. 1. Various functional elements of the track section 31 that correspond to the elements of the track section 20 will bear corresponding reference numerals.
FIGS. 3-7 illustrate one advantageous form of wireless receiver unit 32 for attachment at one end of a track section 20. The receiver unit 32 includes a main bracket 33 that mounts a directional antenna 34 and connects into the end of the track section. The bracket 33 mounts a power supply 35 and also a wireless receiver card 36 which is connected to the antenna 34 and serves in part to convert the wireless signal to data signals for output to the data conductors 28-30. The receiver unit 32 includes structure at one end for engaging and being supported by the adjacent track section 20 and for electrical engagement with the conductors 26-30 of the track section. The arrangement is such that the power supply 35 is supplied with power from the power conductors 26, 27, while the wireless receiver unit data output is supplied to the three data conductors 28-30 of the track system.
FIGS. 8-11 of the drawings illustrate various alternative forms of wireless receiver units for installation in a track system in accordance with the invention. Whereas the receiver unit 32 of FIGS. 3-7 is installed as an end member of a track configuration, FIGS. 8-11 illustrate wireless receivers installed between track sections and serving as connectors thereof. In FIG. 8, the receiver 37 is configured to connect between a pair of aligned track sections 20 (not shown), joining with the power and data conductors of each. FIG. 9 illustrates an L-shaped connector 38 for joining and electrically connecting with two track sections 20 (not shown) disposed at right angles. FIG. 10 illustrates a T-shaped connector 39 for joining and connecting with three track sections 20 (not shown) disposed in a T-shaped configuration. FIG. 11 illustrates a four-way, X-shaped connector 40 for joining and connecting with four track sections 20 (not shown) disposed in a right-angular connecting arrangement. In each of the connector elements 37-40, the power and processing for the wireless receiver advantageously are located within one of the two or more sections of the connector element, with power input to the wireless receiver being provided by connections with power conductors 26, 27 (FIG. 1) of a track section and data output being provided by connections with data conductors 28-30 of a track section. Power can be input to the conductors 26, 27 at any suitable point in the track system. Data is input to the data conductors 28-30 by the wireless receiver unit and is conducted throughout the track system, with particular sets of data instructions being selectively addressed to individual output fittings at any and all locations along the track system
FIGS. 12 and 13 illustrate an end section of recessed track 31 (FIG. 2) provided at an end thereof with a wireless receiver unit 41. The receiver unit 41 has a tongue structure 42, which can be attached to the track element 31, and power and data contacts 43, 44 that connect with the power and data contacts 26-27 and 28-30 of the track element 31. Because the track 31 is recessed, the body of the receiver unit 41 projects below the track element.
FIGS. 14 and 15 illustrate the manner in which output fixtures, typically but not necessarily lighting fixtures, are operatively mounted to a track system of the type described above. A fixture body 45 is mounted on a vertical stem 46 provided at its upper end with a rotary mounting head 47. The mounting head 47 is provided on opposite sides with mounting wings 48 which fit between opposed support flanges 49 at the bottom of the track section, when the mounting head is rotated to an install/remove position and which overlie and are supported by the flanges 49 when the mounting head is rotated to a lock position, shown in FIGS. 15, 16. The rotary mounting head 47 also mounts rotary contact arms 50, 51 (power) and 52-54 (data), which project from opposite sides of the mounting head 47 and are aligned with the power and data conductors 26-27 and 28-30 when the fixture is mounted in a track section 20 or 31. Like the mounting wings 48, the contact arms 50-54 fit between the support flanges 49 when the mounting head 47 is rotated to an install/remove position. After insertion, the mounting head is rotated to bring the mounting wings into positions overlying and supported by the flanges 49, and simultaneously to bring the contact arms 50-54 into tight electrical contact with the respective power and data conductors.
In accordance with an aspect of the invention, the wireless receivers for receiving control data can be configured for “portable” mounting and location in the track system by installation in the track more or less in the same manner as a lighting or other output fixture. FIGS. 16 and 17 show one form of portable receiver 59 comprising an elongated mounting body 60 of inverted T-shaped cross section. The upwardly projecting “stem” portion of the T section is dimensioned to be received in the downwardly opening cavity 61 of a track section 20 or 31. The illustrated body 60 is somewhat elongated, compared to the output fixture sown in FIGS. 44, 45, and is provided with longitudinally spaced, rotatably mounted wing elements 62. The wing elements can be retracted within the body 60 for insertion into the track cavity 61, and thereafter rotated to extended positions to engage the flanges 49. Rotatably mounted contact elements, similar to the contact elements 50-54 of the fixture 45, are mounted for rotation with one of the wing elements 62. When the wing elements are rotated to extended positions, to engage the support flanges 49, the contact elements are also rotated into electrical contact with their respective power and data conductors 26, 27 and 28-30. A pair of rotatable power contacts 63, 64 are visible at the right hand side of the mounting body 60 in FIG. 16, it being understood that the rotatable data contacts are exposed on the opposite side of the mounting body 60.
In the embodiment of FIGS. 16, 17 the electronics of the wireless receiver are contained within a housing 65 attached to the bottom of the mounting body by a short stem 66. A suitable directional antenna 67 is mounted on the housing 65. In the embodiment of FIG. 18, a portable receiver 68 includes a housing 69 for the receiver electronics which is mounted at one end of the mounting body 60a. The mounting body is functionally similar to the body 60. A directional receiving antenna 70 extends downward from the mounting body 60a and is connected to the receiver electronics in the housing 69.
The portable receivers 59, 68 can be quickly installed at any point in a track system and can be quickly removed and relocated to a new position as necessary or desirable, to accommodate a reconfiguration of fixtures on the track or for any other reason.
FIG. 19 shows schematically a simple track system provided with a plurality of output fixtures wirelessly controllable using a single wireless receiver module associated with the track system and receiving control signals from a remote transmitter 72. The system of FIG. 19 comprises a plurality of straight track sections 73-80 arranged in a desired configuration according to the needs of the theatrical or other venue. The track sections 74-76 are joined at a common junction by a 4-way connector 81, which can be of a conventional type, provided with means for mechanically joining the four track sections as well as electrical connections for joining the power conductors 26, 27 and data conductors 28-30 of the several track sections. In the illustrated system, track sections 26-79 are joined by a four-way connector 40 (FIG. 11), which is provided with means for mechanically joining the track sections and electrically joining the respective power and data conductors 25, 26 and 28-30. The system of FIG. 19 also includes a standard L-shaped connector 81, mechanically and electrically joining sections 79 and 80 of straight track. In the illustrated system, the 4-way connector 40 is provided with a directional receiving antenna 34 for receiving control signals from the remote transmitter 72. As heretofore described, the received control signals are processed in the connector 40 and imparted to data conductors 28-30 of the track system for effecting the independent control of a plurality of output devices 82 mounted at various locations along the track system. The output devices 82 may be in the form of controllable lighting devices, sound making devices or other controllable devices desired by the venue.
The system of the invention has many and significant advantages over conventional systems for wirelessly control of a large number of output devices. Whereas conventional systems require each output device to be provided with its own wireless receiver, the inventive system enables a single wireless receiver to be installed in a track system, which may involve a large number of independently controlled output fixtures arranged in complex configurations. The single wireless receiver may be installed at any convenient point in the track system and may also be “portably” mounted, in the same manner as standard output fixtures. The portable features simplifies the initial installation and also accommodates convenient relocation of the receiver if necessary or desirable. The system of the invention, requiring only a single wireless receiver, not only greatly reduces the initial cost of the control system but correspondingly reduces maintenance requirements thereof.
In a system of unusual complexity, with an unusually large number of output devices, it may be preferred to utilize more than one receiving control device in the track system. In such a case, each receiving control device would address and control a separate group of the output devices with each group comprising a plurality of output devices. The data conductors of the system may be interrupted between the receiving control devices.
It should be understood that the specific embodiments of the invention herein illustrated and described are intended as representative only and do not define the limits of the invention. Reference should therefore be made to the following appended claims in determining the full scope of the invention.
Patent Application
20240085009
