Patent Application
20180248404
This disclosure pertains generally, but not by way of limitation, to power distribution techniques.
Powered furniture has been growing in popularity in various locations, including workplaces, hospitals, and even schools. By adding access to A/C power directly to powered furniture, including modular workstations, for example, various electronic equipment, including laptops, cell phones, tablets, can be powered.
To be fully functional, powered furniture, including modular workstations, can adapt to the orientation of each classroom, conference room, hospital room, and the like in which they are placed. For example, powered modular workstations can be easily moved to accommodate a large room, e.g., a conference room at a hotel, where the orientation of the room routinely changes depending on its use.
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document.
This disclosure is directed to techniques for controlling A/C power distribution in a powered furniture system that can include articles of furniture, e.g., two or more, configured to receive power from a power source. Non-limiting examples of articles of powered furniture can include modular workstations, tables, benches, and the like.
Using various techniques of this disclosure, the various articles of powered furniture can be connected in any order because each article of furniture can be configured to receive power directly from a wall outlet or from another article of furniture in the system.
In some example implementations, this disclosure is directed to a method of controlling power distribution in a powered furniture system including a first article of powered furniture having a first controller and a first number of power outlets and a second article of powered furniture having a second number of power outlets and a second controller. The method comprises determining, using the first controller, a first total number of power outlets in the system, wherein the first total number of power outlets includes at least the first number of power outlets of the first article of powered furniture, and wherein the first number of power outlets includes at least one electrical receptacle; controlling, using the first controller, application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and transmitting, using the first controller, the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
In some example implementations, this disclosure is directed to a power distribution system to control power distribution in a powered furniture system. The power distribution system comprises a first article of powered furniture including a first controller configured to: determine a first total number of power outlets in the system, wherein the first total number of power outlets includes at least the first number of power outlets of the first article of powered furniture, and wherein the first number of power outlets includes at least one electrical receptacle; control application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and transmit the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
In some example implementations, this disclosure is directed to a power distribution system to control power distribution in a powered furniture system, the power distribution system including a first article of powered furniture having a first controller and a first number of power outlets and a second article of powered furniture having a second controller and a second number of power outlets. The power distribution system comprises means for determining a first total number of power outlets in the system including at least the first number of power outlets of the first article of powered furniture, wherein the first number of power outlets includes at least one electrical receptacle; means for controlling application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and means for transmitting the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
Powered furniture also referred to in this disclosure as “articles of powered furniture” or “articles of furniture”) can be designed to be movable and adaptable. As described in detail below, the powered furniture of this disclosure, including modular workstations, tables, benches, etc., can be connected together in series (or “daisy-chained”) such that each article of furniture can draw power from a previous article of furniture in the chain, and the first article of furniture can draw power from a wall outlet.
In some examples, the articles of furniture can be separated and moved, e.g., rolled, across a room and connected in a different order or configuration, and individual articles of furniture can be connected to a different system of powered furniture. Using various techniques of this disclosure, a high level of adaptability can be achieved because each article of powered furniture can control its own power system. For example, there is no master article of furniture controlling all the other powered furniture in the powered furniture systems described in this disclosure. Rather, each article of furniture can recognize the power capability of the system and can act accordingly. There is no need to worry about whether an article of furniture is positioned first, second, third, etc. in a powered system because the powered furniture according to this disclosure can advantageously be connected in any order.
Like other powered items, powered furniture currently must comply with various safety standards. For example, powered furniture currently must comply with Underwriters Laboratories (IX) 962 “Standard for Household and Commercial Furnishings.” As currently written, UL 962 essentially states that no more than eight outlets can be daisy chained together in a system of powered furniture, e.g., tables. In some examples, an outlet can be a duplex outlet. In other examples, an outlet can be a triplex outlet. In some examples, an outlet can have between one and three receptacles. In other examples, an outlet can have more than 3 receptacles.
To comply with the current UL 962 standard, a number of example configurations of powered tables, for example, are possible. For example, eight tables, each having one built-in outlet, could be daisy-chained together. As another example, if a table has four built-in outlets, two tables could be daisy-chained together. A problem to be solved is determining how to limit the powered outlets to a maximum of eight even if the user daisy chains together a system with more than eight outlets.
Existing techniques attempt to solve the problem by creating two types of powered furniture, e.g. tables: master tables and slave tables. The first table in a system must be the master table, and each table connected to the master table must be a slave table. The master table is connected to an outlet on the wall and it controls the whole system by turning the slaves on/off.
The solutions discussed in this disclosure surpass existing techniques in adaptability, for example. In accordance with various techniques of this disclosure, the articles of powered furniture, e.g., tables, workstations, and the like, are similarly configured in that each article of furniture is configured to draw power from a wall outlet or from another table. If the article of furniture draws power from the wall outlet, it can be configured to be the first article in the powered furniture system and can be designated as the head or parent article, e.g., parent table or workstation. If the article of powered furniture draws power from another article, then it is designated as a child article, e.g., child table or workstation.
Unlike existing solutions, the techniques of this disclosure allow each article of furniture in the powered furniture system to operate as its own master. For example, a first table in a powered furniture system, also known as the head or parent table, can be connected to a wall outlet. As described in detail below, the first table can determine that it is the first table, e.g., connected to the wall outlet, in the powered furniture system and can control application of power to its associated outlets. A second table in the powered furniture system, also known as a child table, can be electrically connected to the first table. The second table can receive, from the first table, a current total of how many outlets are already powered in the system, e.g., the number of outlets powered in the first table. Then, the second table can determine whether it can turn its own outlets on using the number of already powered outlets.
For example, if eight outlets are allowed per the existing U. 962 standard and the first table has already powered four outlets, the second table can power on a maximum of four outlets to be in compliance. This process can be similar for each additional table after the second table. A third table can receive, from the second table, a current total of how many outlets are powered in the system, e.g., the combined number of outlets already powered in the first table and in the second table. Then, the third table can determine whether it can turn its own outlets on using the combined number of already powered outlets. Continuing the example above, if eight outlets are allowed per the current UL 962 standard and the first table has already powered four outlets and the second table has already powered two outlets, the third table can power on a maximum of two outlets to be in compliance.
The wall outlet connector 14 can include line and neutral power outputs 16, 18. A detection circuit 20 can be connected to the line and neutral power outputs 16, 18 of the wall outlet connector 14. If the article of furniture is connected to a power source, e.g., wall outlet (not depicted in
The power distribution system 10 of the article of powered furniture can include a controller 32 coupled to a memory 34. In some examples, the controller 32 can be an embedded processor.
The controller 32 can be coupled to the detection circuit 20 and can receive the DC voltage 22 if the article of furniture is connected to a power source (wall outlet) using the wall outlet connector 14. The received DC voltage 22 can indicate to the controller 32 that the article of furniture, and specifically the wall outlet connector 14, is connected to a wall outlet.
In some example implementations, if the controller 32 receives the DC voltage 22; the controller 32 can recognize that the article of furniture is powered from a wall outlet and, as such, is the first article of furniture in a chain of connected articles of powered furniture. By detecting the DC voltage 22 at input 36, the controller 32 can recognize that there are no upstream articles of furniture in the powered furniture system.
As seen in
It should be noted that the configuration of
Using various techniques of this disclosure, the controller 32 can control application of power to one or more power outlets 44A-44D (collectively referred to in this disclosure as outlets 44) associated with the article of furniture. Although the example shown in
In the example configuration shown in
The article of furniture and, in particular, the controller 32, can control application of power to one or more of the outlets 44 by outputting one or more control signals on control lines 54A-54D to the respective circuits 46A-46D, e.g., relays. Respective switches or contacts of the circuits 46A-46D can be closed in response to receiving the control signals on control lines 54A-54D.
In the example depicted in
The system 10 can further include a connector 56 to provide power to a second article of furniture daisy-chained to the first article of furniture, e.g., using a power connection 78 of
During manufacture of the article of furniture, for example, each controller 32 of an article of furniture can be programmed with and store, e.g., in a memory circuit 34, data representing a number of outlets associated with the article of furniture. For example, in the configuration shown in
The controller 32 can receive, using a communications channel, data representing a number of power outlets in any articles of powered furniture electrically connected upstream in the chain to the first article of powered furniture. In some example implementations, the communications channel can be a wired communications channel. For example, the communications channel can be a series connected communications channel 58, e.g., a daisy-chained channel connected between the articles of furniture, that can include a DATA OUT signal path 60 and a DATA IN signal path 62.
In other example implementations, the communications channel can be a wireless communications channel. For example, the power distribution system 10 can optionally include a wireless transceiver circuit 64 connected to the controller 32 that can transmit data wirelessly between articles of furniture in the powered furniture system.
In other example implementations, the communications channel can include the power lines, e.g., line and neutral power lines, such that the signals can be transmitted on the power lines themselves using power line communication techniques. For example, the system 10 of
Electrical power can be transferred from a workstation assembly 72A to another workstation assembly 72B by a power connection 78, e.g., using a connector 12 of
Each workstation assembly 72A, 72B can include the power distribution system 10 of
The non-limiting example of
In the example configuration shown in
To comply with a wiring standard, e.g., UL 962, for example, which is currently a maximum of eight outlets, the controller 32 of the workstation 72A can determine a first total number of power outlets in the system. The first total number of power outlets in the system can include all of the power outlets in one or more articles of furniture connected upstream in the daisy-chain (if any), and the number of outlets in the article of powered furniture associated with the controller 32 of the workstation 72A. In the example configuration shown in
The controller 32 of the workstation 72A can transmit the total number of powered outlets to the second controller 32 of the second workstation 72B. In this case, the controller 32 of the workstation 72A can transmit data representing the four outlets that it powered.
The controller 32 of the second workstation 72B can receive, using its communications channel 58 of
Then, the controller 32 of the second workstation 72B can sum the data representing the number of power outlets associated with the second workstation 72B, e.g., stored in the memory 34 of
The controller 32 of the second workstation 72B can control application of power to its two power outlets using the determined second total number of power outlets in the system. Continuing with the specific example above, the controller 32 of the second workstation 72B determined that the second total number of power outlets was six power outlets (including its two outlets and the four outlets from the first workstation 72A). The controller 32 of the second workstation 72B can compare the second total number of power outlets (six outlets) to the predetermined maximum number retrieved from memory 34 (currently eight outlets, per IX 962). Because the second total number of power outlets of six outlets does not exceed the predetermined maximum number of eight outlets, the controller 32 of the second workstation 72B can allow application of power to at least one of power outlets 44A, 44B of its associated article of powered furniture.
Next, the controller 32 of the second workstation 72B can transmit the total number of powered outlets to the third controller 32 of the third workstation 72C. In this case, the controller 32 of the workstation 72B can transmit data representing the six outlets that are powered in the system.
The controller 32 of the third workstation 72C can receive, using its communications channel 58 of
Then, the controller 32 of the third workstation 72C can sum the data representing the number of power outlets associated with the third workstation 72C, e.g., stored in the memory 34 of
Next, the controller 32 of the third workstation 72C can transmit the total number of powered outlets to the controller 32 of the fourth workstation 72D. In this case, the controller 32 of the third workstation 72C can transmit data representing the eight outlets that are powered in the system.
The controller 32 of the fourth workstation 721) can receive, using its communications channel 58 of
Then, the controller 32 of the fourth workstation 72D can sum the data representing the number of power outlets associated with the fourth workstation 72D, e.g., stored in the memory 34 of
At block 104, an article of furniture, e.g., the second workstation 72B of
At block 108, the controller 32 of the second workstation 72B can sum the received data, e.g., data representing the four outlets, and the data representing the number of outlets in the second workstation 72B, e.g., the data representing the two outlets, to determine a total number of outlets.
At block 110, the controller 32 of the second workstation 72B can compare the total number of power outlets (six outlets) to the predetermined maximum number retrieved from memory 34 (currently eight outlets, per UL 962). If the total number is less than or equal to the predetermined maximum (“YES” branch of block 110), then the controller 32 of the second workstation 72B can allow application of power to at least some of the outlets associated with the second workstation 72B (block 112). If the total number is not less than or equal to the predetermined maximum (“NO” branch of block 110), then the controller 32 of the second workstation 72B can prevent application of power to the outlets associated with the second workstation 72B (block 114).
At block 116, the controller 32 can transmit data representing a new total of powered outlets in the one or more upstream connected articles of furniture to the next (downstream) article of furniture in the chain.
Using the various techniques described above, a high level of adaptability can be achieved because each article of powered furniture can control its own power system. There is no master article of furniture controlling all the powered furniture in the powered furniture systems described in this disclosure. Rather, each article of can recognize the power capability of the system and can act accordingly to power or not its associated power outlets.
Aspect 1 includes subject matter (such as a method, means for performing acts, machine readable medium including instructions that when performed by a machine cause the machine to performs acts, or an apparatus to perform) of controlling power distribution in a powered furniture system including a first article of powered furniture having a first controller and a first number of power outlets and a second article of powered furniture having a second number of power outlets and a second controller, the subject matter comprising: determining, using the first controller, a first total number of power outlets in the system, wherein the first total number of power outlets includes at least the first number of power outlets of the first article of powered furniture, and wherein the first number of power outlets includes at least one electrical receptacle; controlling, using the first controller, application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and transmitting, using the first controller, the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
In Aspect 2, the subject matter of Aspect 1 may optionally include wherein determining, using a first controller, a first total number of power outlets in the system includes: receiving, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture; and summing data representing the first number of power outlets associated with the first article of powered furniture and the data representing the third number of power outlets in the third article of powered furniture to determine the first total number of power outlets.
In Aspect 3, the subject matter of Aspect 2 may optionally include, wherein controlling, using the first controller, application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system includes: comparing the first total number of power outlets in the system to a predetermined maximum number of power outlets; and using the comparison, allowing application of power to at least one of the first number of power outlets associated with the first article of powered furniture when the first total number of power outlets does not exceed the predetermined maximum number.
In Aspect 4, the subject matter of Aspect 2 may optionally include wherein receiving, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture includes: receiving, using a wired or wireless communication channel, data representing a third number of power outlets configured to receive power in a third article of powered furniture electrically connected to the first article of powered furniture.
In Aspect 5, the subject matter of Aspect 2 may optionally include, wherein receiving, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture includes: receiving, using a series connected communications channel, data representing a third number of power outlets configured to receive power in a third article of powered furniture electrically connected to the first article of powered furniture.
In Aspect 6, the subject matter of Aspect 2 may optionally include, wherein receiving, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture includes: receiving, using a power line communications transceiver, data representing a third number of power outlets configured to receive power in a third article of powered furniture electrically connected to the first article of powered furniture.
In Aspect 7, the subject matter one or more of Aspects 1-6 may optionally include, determining a source of power of the first article of powered furniture in the system.
In Aspect 8, the subject matter one or more of Aspects 1-7 may optionally include, wherein determining a source of power of the first article of powered furniture in the system includes: determining whether the first article of powered furniture of the system is connected to power directly from a wall outlet or connected to power from a third article of powered furniture of the system.
In Aspect 9, the subject matter of Aspect 8 may optionally include, upon determining that the first article of powered furniture of the system is connected to power directly from a wall outlet: configuring a circuit to receive power from the wall outlet; and configuring the circuit to prevent power from being received from the third article of powered furniture of the system.
In Aspect 10, the subject matter one or more of Aspects 1-9 may optionally include, receiving, using the communications channel, data representing the first total number of power outlets in the system; determining, using the second controller, a second total number of power outlets in the system, wherein the second total number of power outlets includes at least the second number of power outlets of the second article of powered furniture, including: summing data representing the second number of power outlets associated with the second article of powered furniture and the data representing the first total number of power outlets to determine the second total number of power outlets.
Aspect 11 includes subject matter (such as an apparatus, device, or system) to control power distribution in a powered furniture system, the subject matter comprising: a first article of powered furniture including a first controller configured to: determine a first total number of power outlets in the system, wherein the first total number of power outlets includes at least the first number of power outlets of the first article of powered furniture, and wherein the first number of power outlets includes at least one electrical receptacle; control application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and transmit the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
In Aspect 12, the subject matter of Aspect 11 may optionally include, wherein the first controller configured to determine a first total number of power outlets in the system including at least the first number of power outlets of the first article of powered furniture, wherein the first number of power outlets includes at least one electrical receptacle is configured to: receive, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture; and sum data representing the first number of power outlets associated with the first article of powered furniture and the data representing the third number of power outlets in the third article of powered furniture to determine the first total number of power outlets.
In Aspect 13, the subject matter of Aspect 12 may optionally include, wherein the first controller configured to control application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system is configured to: compare the first total number of power outlets in the system to a predetermined maximum number of power outlets; and using the comparison, allow application of power to at least one of the first number of power outlets associated with the first article of powered furniture when the first total number of power outlets does not exceed the predetermined maximum number.
In Aspect 14, the subject matter of Aspect 12 may optionally include, wherein the first controller configured to receive, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture is configured to: receive, using a wired or wireless communication channel, data representing a third number of power outlets configured to receive power in a third article of powered furniture electrically connected to the first article of powered furniture.
In Aspect 15, the subject matter of Aspect 12 may optionally include, wherein the first controller configured to receive, using a communications channel, data representing a third number of power outlets in a third article of powered furniture electrically connected to the first article of powered furniture is configured to: receive, using a series connected communications channel, data representing a third number of power outlets configured to receive power in a third article of powered furniture electrically connected to the first article of powered furniture.
In Aspect 16, the subject matter one or more of Aspects 11-15 may optionally include, wherein the first article of powered furniture includes a first circuit configured to determine a source of power of the first article of powered furniture in the powered furniture system.
In Aspect 17, the subject matter one or more of Aspects 11-16 may optionally include, wherein the first circuit configured to determine a source of power of the first article of powered furniture in the powered furniture system is configured to: determine whether the first article of powered furniture of the system is connected to power directly from a wall outlet or connected to power from a third article of powered furniture of the system.
In Aspect 18, the subject matter of Aspect 17 may optionally include, wherein the first circuit configured to determine a source of power of the first article of powered furniture in the powered furniture system is further configured to: upon determining that the first article of powered furniture of the system is connected to power directly from a wall outlet: configure the first circuit to receive power from the wall outlet; and configure the first circuit to prevent power from being received from the third article of powered furniture of the system.
In Aspect 19, the subject matter one or more of Aspects 11-18 may optionally include, wherein at least one of the first article of powered furniture and the second article of powered furniture is a table.
In Aspect 20, the subject matter one or more of Aspects 11-19 may optionally include, wherein at least one of the first article of powered furniture and the second article of powered furniture is a modular workstation.
Aspect 21 includes subject matter to control power distribution in a powered furniture system, the power distribution system including a first article of powered furniture having a first controller and a first number of power outlets and a second article of powered furniture having a second controller and a second number of power outlets, the subject matter comprising: means for determining a first total number of power outlets in the system including at least the first number of power outlets of the first article of powered furniture, wherein the first number of power outlets includes at least one electrical receptacle; means for controlling application of power to the first number of power outlets associated with the first article of powered furniture using the determined first total number of power outlets in the system; and means for transmitting the first total number of power outlets to a second controller of a second article of powered furniture having a second number of power outlets.
The above detailed description includes references to the accompanying drawings, which form a part of the detailed description. The drawings show, by way of illustration, specific embodiments in which the invention can be practiced. These embodiments are also referred to herein as “examples” or “aspects”. Such examples or aspects can include elements in addition to those shown or described. However, the present inventor also contemplates examples in which only those elements shown or described are provided. Moreover, the present inventor also contemplate examples using any combination or permutation of those elements shown or described (or one or more aspects thereof), either with respect to a particular example (or one or more aspects thereof), or with respect to other examples (or one or more aspects thereof) shown or described herein.
In the event of inconsistent usages between this document and any documents so incorporated by reference, the usage in this document controls.
In this document, the terms “a” or “an” are used, as is common in patent documents, to include one or more than one, independent of any other instances or usages of “at least one” or “one or more.” In this document, the term “or” is used to refer to a nonexclusive or, such that “A or B” includes “A but not B,” “B but not A,” and “A and B,” unless otherwise indicated. In this document, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein,” Also, in the following claims, the terms “including” and “comprising” are open-ended, that is, a system, device, article, composition, formulation, or process that includes elements in addition to those listed after such a term in a claim are still deemed to fall within the scope of that claim. Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects.
Method examples described herein can be machine or computer-implemented at least in part. Some examples can include a computer-readable medium or machine-readable medium encoded with instructions operable to configure an electronic device to perform methods as described in the above examples. An implementation of such methods can include code, such as microcode, assembly language code, a higher-level language code, or the like. Such code can include computer readable instructions for performing various methods. The code may form portions of computer program products. Further, in an example, the code can be tangibly stored on one or more volatile, non-transitory, or non-volatile tangible computer-readable media, such as during execution or at other times. Examples of these tangible computer-readable media can include, but are not limited to, hard disks, removable magnetic disks, removable optical disks (e.g., compact disks and digital video disks), magnetic cassettes, memory cards or sticks, random access memories (RAMS), read only memories (ROMs), and the like.
In some embodiments, various techniques of this disclosure can be implemented using pre-defined logic that performs a specific logic function, in addition to or instead of sequentially executed code. For example, various aspects of this disclosure can be implemented at least in part by dedicated circuitry or logic that is permanently configured to perform certain operations, including, for example, a special-purpose processor, such as a field programmable gate array (FPGA) or an ASIC.
The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. Other embodiments can be used, such as by one of ordinary skill in the art upon reviewing the above description. The Abstract is provided to comply with 37 C.F.R. § 1.72(b), to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. Also, in the above Detailed Description, various features may be grouped together to streamline the disclosure. This should not be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment.
