CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a U.S. non-provisional patent application claiming priority
to
U.S. Provisional Patent Appln. Ser. No. 63/476,863, filed on December 22, 2022, the contents of which are hereby incorporated by reference
in their entirety.
FIELD OF THE DISCLOSURE
[0002] The present disclosure relates generally to building enclosures and, more particularly,
to using building fenestration system glazing or seal gaskets as pressure transducers.
BACKGROUND OF THE DISCLOSURE
[0003] When finishing the fenestration of a building, it has become commonplace within the
industry to include sensors within the fenestration system. Incorporation of sensors
and sensor systems fulfills either a security or wellbeing role. For example, sensors
may be designed to detect damage to the system (e.g., broken window, door, etc.),
tampering with a seal of the system, as well as reporting the real-time status of
the fenestration system (e.g., open, closed, locked, unlocked, etc.).
[0004] Some fenestration systems include advanced sensors that provide an early warning
system for detecting tapping, banging, vibration, forced entry, etc. on a fenestration
system. However, these vibration sensors only detect if an intruder is trying to break
the window or the door by hitting it. Such vibration sensors would not detect someone
attempting to pick the gasket of a window and carefully removing the glass.
[0005] The sensors may be after-market devices that are retrofitted by the end user, or
may be installed during the initial installation of the fenestration system. In both
of these cases, additional tooling and preparation may be required to accommodate
the added hardware. Further, these sensor systems are rarely universal, in that special
sensor systems must be designed for windows, doors, and vents separately.
[0006] Thus, there is a need for a universally applicable sensor system for fenestration
systems with a reduced footprint, such that any opening within a building may be properly
monitored and maintained.
SUMMARY OF THE DISCLOSURE
[0007] Embodiments disclosed herein include a fenestration system that includes opposing
first and second rigid components, a gasket interposing the first and second rigid
components, the gasket being made of an electrically-conductive material and exhibiting
a baseline resistance when arranged between the first and second rigid components,
and a control system communicably coupled to the gasket with one or more wires and
operable to monitor a real-time resistance of the gasket and generate a signal when
the real-time resistance deviates from the baseline resistance. In a further embodiment
of the fenestration system, the electrically-conductive material is selected from
the group consisting of ethylene propylene diene monomer rubber, a conductive foam,
a conductive elastomer, and any combination thereof. In another further embodiment
of the fenestration system, the fenestration system further includes comprising a
power source that provides electrical power the control system and the one or more
wires. In another further embodiment of the fenestration system, the fenestration
system further includes a control unit communicably coupled to the control system
and operable to provide a visual display of a status of the control system, report
the status to a building management system, report the status to a smart home system,
or any combination thereof. In another further embodiment of the fenestration system,
wherein the real-time resistance deviates from the baseline resistance when the gasket
undergoes a disturbance. In another further embodiment of the fenestration system,
three or more wires are coupled to the gasket at predefined intervals and wherein
a localized, real-time resistance is measured between two of the three or more wires.
In another further embodiment of the fenestration system, the fenestration system
comprises a window assembly and the first rigid component comprises a sill and the
second rigid component comprises a panel comprising one or more window panes. In another
further embodiment of the fenestration system, the fenestration system comprises a
window assembly and the first rigid component comprises a sill and the second rigid
component comprises a sill receptor. In another further embodiment of the fenestration
system, the fenestration system comprises a door assembly and the first rigid component
comprises a stile and the second component comprises a panel comprising one or more
panes of glass. In another further embodiment of the fenestration system, the fenestration
system comprises a door assembly and the first rigid component comprises a door frame
and the second component comprises a door. In another further embodiment of the fenestration
system, the fenestration system comprises a curtain wall assembly and the first rigid
component comprises a mullion or transom or a pressure plate and the second rigid
component comprises one or more glazing panels. In another further embodiment of the
fenestration system, the fenestration system comprises a curtain wall assembly comprising
a mullion or transom, a pressure plate, and a fastener, and wherein installation of
the fastener is monitored through the real-time resistance of the gasket installed
within the curtain wall assembly. In another further embodiment of the fenestration
system, the gasket operates as a glazing or sealing gasket. In another further embodiment
of the fenestration system, the fenestration system further includes an alarm in communication
with the control system and operable to generate an audible or visual alarm upon receipt
of the signal.
[0008] Embodiments disclosed herein may further include a method of monitoring a fenestration
system, the method may include measuring a baseline resistance across a gasket forming
part of the fenestration system, the fenestration system further including opposing
first and second rigid components, the gasket interposing the first and second rigid
components and being made of an electrically-conductive material, and a control system
communicably coupled to the gasket with one or more wires. The method may further
include monitoring a real-time resistance of the gasket with the control system, and
generating a signal with the control system when the real-time resistance deviates
from the baseline resistance. In a further embodiment of the method, measuring the
baseline resistance across the gasket comprises measuring the baseline resistance
when the gasket is arranged between the first and second rigid components. In another
further embodiment of the method, the method may further include at least one of providing
a visual display of a status of the control system with a control unit communicably
coupled to the control system, report the status to a building management system with
the control unit, and report the status to a smart home system with the control unit.
In another further embodiment of the method, the method may further include subjecting
the gasket to a disturbance and thereby deviating the real-time resistance from the
baseline resistance. In another further embodiment of the method, the method may further
include performing a sealing function with the gasket. In another further embodiment
of the method, generating the signal comprises triggering an alarm in communication
with the control system.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The following figures are included to illustrate certain aspects of the present disclosure
and should not be viewed as exclusive embodiments. The subject matter disclosed is
capable of considerable modifications, alterations, combination, and equivalents in
form and function, without departing from the scope of this disclosure.
FIG. 1 is a schematic diagram of an example pressure transducing gasket system according
to one or more embodiments.
FIGS. 2-4 depict a series of cross-sectional views of example fenestration systems
which may incorporate the pressure transducing gasket system of FIG. 1.
DETAILED DESCRIPTION
[0010] The present disclosure relates generally to building enclosures and, more particularly,
to using building fenestration system glazing or seal gaskets as pressure transducers.
[0011] The embodiments disclosed herein describe a system in which a glazing or seal gasket
for a fenestration system is employed as a pressure transducer for determining damage
or tampering with an enclosing component, such as a door, a window, or a vent. Alternatively,
the gasket of the fenestration system may be utilized in reporting the real-time status
of the system such as "open" or "closed", or to verify the correct installation of
beading and pressure plates. The conductive electrical properties of the gasket materials
may enable these sensing capabilities within existing fenestration systems, while
new systems may use a variety of conductive gasket materials to achieve the same effect.
[0012] The glazing or seal gaskets described herein and used in windows, doors, or vents
may be used as a sensor, specifically as a pressure sensor, thus negating the need
for a separate sensor to be installed in a fenestration system. In addition to time
and cost savings, the gasket could act (dependent on the electrical configuration)
is a perimeter sensor rather than a point sensor, which is the current (conventional)
sensor methodology. Thus, the gasket may be able to detect changes at any point of
the system, including if an intruder might be attempting pick (remove) the gasket,
which can be particularly important in healthcare installations and settings.
[0013] As used herein, the terms "building fenestration system," "fenestration system,"
and variants thereof, refer to an enclosing component or member of a building, such
as a door, a window, or a vent (e.g., fixed or movable / pivotable), which include
one or more glazing or seal gaskets.
[0014] FIG. 1 is a schematic diagram of an example pressure transducing gasket system 100,
according to one or more embodiments of the present disclosure. The pressure transducing
gasket system 100 (hereinafter, "the system 100") may include a gasket 102 comprising
or otherwise being used as a glazing or sealing gasket for a fenestration system.
The gasket 102 is not limited its use or installation location in any type of conventional
fenestration system. Accordingly, the system 100 may be used in any type of door,
window, or vent, without departing from the scope of the present disclosure.
[0015] According to embodiments of the present disclosure, beyond providing a general sealing
function, the gasket 102 may also be used as a type of pressure sensor. More specifically,
the gasket 102 may be made of an electrically-conductive material capable of changing
conductivity as a function of applied pressure. In some embodiments, for example,
the gasket 102 may be made of ethylene propylene diene monomer (EPDM) rubber. While
relatively resistive in nature, EPDM is nonetheless a conductive material and its
conductivity will change as a function of pressure applied to the EPDM material. In
other embodiments, the gasket 102 may alternatively be made from other electrically-conductive
materials including, but not limited to, a conductive foam, a conductive elastomer,
or any other conductive material which may also form a seal, without departing from
the scope of this disclosure.
[0016] The conductive nature of the gasket 102 may be harnessed through the attachment of
a plurality of wires 104 selectively placed at known locations along the length of
the gasket 102. In the illustrated embodiment, two wires 104a and 104b are electrically
coupled to the gasket 102 at opposing ends 106a and 106b of the gasket 102. This allows
the gasket 102 to act as a pressure-sensitive resistor mounted between the wires 104a,b.
In some applications, the wires 104a,b may be mounted to the gasket at corresponding
electrical ports 108 provided within or on the gasket 102. In some embodiments, the
ports 108 may comprise predefined connections within the gasket 102 for the inclusion
of the wiring. In other embodiments, however, the ports 108 may lack a defined structure
and may exist only as an insertion or clamping point of the wires 104 to the gasket
102. In yet other embodiments, the ports 108 may take the form of an electrode, or
other electrified device, which may be applied at the location shown as the port 108
such that the wires 104a,b and the gasket 102 are placed in electrical communication.
[0017] With the gasket 102 acting as a resistor between the wires 104a,b, a baseline resistance
may be determined across the gasket 102. In some embodiments, the baseline resistance
may be measured after installing the gasket 102 within a fenestration system, such
that the baseline may be determined for an in-use system. After determining the baseline
resistance, any further (future) deformation to the gasket 102 may yield a differing
resistance across the wires 104a,b, thereby allowing the system 100 to act as a traditional
pressure transducer.
[0018] The wires 104a,b may be further connected to a control system 110 included in the
system 100. The control system 110 may be configured to monitor a real-time resistance
of the gasket 102 and generate a signal when the real-time resistance varies (deviates)
from a predetermined (pre-recorded) baseline resistance of the gasket 102, such that
the resistance and any change thereof may be measured and utilized. The real-time
resistance may be measured in a variety of time scales including, but not limited
to, one millisecond, one second, one minute, one hour, or one day, based upon the
desired time resolution and function of the system 100. The control system 110 may
include a processor 112 programmed to perform advanced calculations and actions as
a part of the system 100. In alternate embodiments, however, the control system 110
may be a simple logic circuit configured to compare the resistance across the wires
104a,b and trigger an alarm when the resistance deviates from a predetermined established
value (e.g., the baseline resistance).
[0019] Either in series as shown, or separately connected to the system 100, a power source
114 may be included in the system 100 to provide electrical power the various component
parts of the system 100. In some embodiments, the power source 114 may be configured
to provide a constant voltage to the analog circuit of the system 100 to allow for
direct measurement of resistance changes. In other embodiments, the power source 114
may be configured to provide intermittent power (e.g., at a 1 Hz sample rate) to the
system 100 to reduce overall power consumption.
[0020] In some embodiments, the power source 114 may comprise one or more batteries or a
battery pack electrically coupled to the control system 110. In such embodiments,
the battery(ies) may be rechargeable or disposable. Moreover, in such embodiments,
the system 100 may be wireless, with communication being conducted through wireless
means, such as Bluetooth technology. In other embodiments, however, the power source
114 may comprise the power mains of the building where the given fenestration system
is located. In such embodiments, the control system 110 may be communicably coupled
to grid electrical power to provide the required electrical power for the system 100.
[0021] In some applications, the system 100 may further include a control unit 116 (shown
in dashed lines) communicably coupled to the control system 110 via one or more communication
links 118 (shown in dashed lines). The communication link 118 may allow the control
system 110 to communicate with the control unit 116 via any wired or wireless means.
The control unit 116 may comprise a computing device, such as a computer or server,
which reads the real-time status or values produced by the control system 110, or
may be a display device (e.g., a graphical user interface "GUI") which visually represents
(displays) the real-time status of the system 100. The control unit 116 may be operated
as part of a building management system in commercial buildings, or may be integrated
with an open or closed protocol within an existing smart home system in residential
buildings.
[0022] As will be appreciated, several systems 100 may be connected to a common control
unit 116, such that each gasket 102 of each system in each fenestration system of
a building can be controlled and/or monitored using the same control unit 116. Further,
a single fenestration unit may utilize multiple systems 100, such that a single door
may use four gaskets 102as one system 100, where each gasket 102 is arranged (positioned)
at a corresponding one of the four edges of the door.
[0023] In some embodiments, the system 100 may further include one or more additional ports
120 at locations other than the ends 106a,b of the gasket 102. The additional ports
120 may be selectively placed (located) at known or predefined intervals along the
length of the gasket 102 between the ends 106a,b, and may be communicably connected
to the control system 110 with one or more additional wires 104c and 104d (shown as
dashed lines). The additional ports 120 and wires 104c,d may prove advantageous in
converting the gasket 102 into a higher resolution sensor. More specifically, including
the additional ports 120 in the system 100 facilitates localized, real-time resistance
measurements between the ports 108 and the additional ports 120, thus helping to more
accurately determine the particular location of tampering or damage to the gasket
based upon the resistance differences between the individual ports 108, 120. The resolution
of the gasket 102 may be increased through an increased number of additional ports
120, such that the distance between resistance readings is reduced.
[0024] In some embodiments, the wires 104a-d may be run through the fenestration system
itself, such that the wires 104a-d may not be visible or easily reached to prevent
tampering. In such embodiments, for example, one or more of the wires 104a-d may be
embedded within the material of the gasket 102 and thereby be used in a tamper detection
application. More specifically, if an individual attempted to remove the gasket 102,
the tamper detection system would be alerted by disruption of the conductive wires
104a-d. Alternatively, or in addition thereto, if the gasket 102 (or a wire embedded
within the gasket 102) is cut, this could create a "break" in the circuit, determined
when a corresponding reading drops to "zero". A break in the circuit could be an indication
that the gasket 102 is being removed, which could lead to glass removal.
[0025] Similarly, in some applications, the control system 110 may be placed on the internal
portion of the building, or hidden within the fenestration system, in other applications.
In some embodiments, the communication link 118 connecting the control system 110
to the control unit 116 is further hidden within the fenestration system and the walls
of the building to prevent tampering.
[0026] In some embodiments, the system 100 may further include an alarm 122, which may form
part of or otherwise be in communication with the control system 110. Operation of
the alarm 122 may be triggered when resistance across the gasket 102 deviates from
a predetermined or established value (e.g., the baseline resistance) and the control
system 110 generates the signal. In some embodiments, the alarm 122 may comprise an
audible or visual alarm configured to alert configured to audibly or visually alert
a user (e.g., homeowner, building owner, occupant, etc.) of a measured resistance
deviation in the gasket 102. In other embodiments, the alarm 122 may be programmed
to send a signal to the control system 110, which communicates with the user via a
communication alert, such as a text message, an email, a push notification, etc.
[0027] Once installed in the system 100, as indicated above, the gasket 102 may serve the
primary purpose of sealing specific areas of the fenestration system. However, the
gasket 102 may further act as a sensor configured to detect any deflection, deformation,
compression, destruction, degradation, damage, or vibration (collectively referred
to herein as "disturbances") of the unit. In some embodiments, the gasket 102 may
lack a sealing or glazing function, and may instead be installed for the primary purpose
of monitoring for any disturbances resulting from tampering or destruction. In further
embodiments, the gasket 102 may serve a secondary purpose of monitoring for the deterioration
of the sealing or glazing function, such that the system 100 may inform the user when
maintenance is required on the gasket 102.
[0028] The system 100 of FIG. 1 may be used in conjunction with a variety of fenestration
systems including, but not limited to, window assemblies, door assemblies, curtain
walls, sliding doors, fixed vents, pivoting vents, glazed roofing assemblies, or any
combination thereof. Example uses for the system 100 will now be provided with reference
to FIGS. 2-4, which depict cross-sectional views of example fenestration systems that
incorporate the principles of the present disclosure.
[0029] FIG. 2 is a cross-sectional side view of an example fenestration system 200 that
may incorporate the principles of the present disclosure. The fenestration system
200 comprises a glazing unit or window assembly and, more particularly, a swinging,
hinged-type window assembly. Accordingly, the first fenestration system 200 will be
referred to herein as the "window assembly 200".
[0030] As illustrated, the window assembly 200 includes a sill 212, a sill receptor 214,
and a panel 202 secured to the sill 212. In the illustrated embodiment, the sill 212
and the panel 202 may be configured to pivotably open into the interior of the building,
as shown by the arrow A, while the sill receptor 214 remains stationary.
[0031] The panel 202 may comprise, for example, one or more panes of window glass, polycarbonate,
or another clear, translucent, tinted, or opaque material. In the illustrated embodiment,
the panel 202 includes a first or "interior" pane 204a and a second or "exterior"
pane 204b. The panes 204a,b may be laterally spaced from each other and the space
between the panes 204a,b may be filled with air or an inert gas to help control transmission
of thermal energy by radiation and convection between the interior of the building
and the exterior environment. Accordingly, the panel 202 may comprise a conventional
"double-glazed" frame arrangement. It will be appreciated, however, that the principles
of the present disclosure may be equally applicable to other glazing panel designs
and configurations, including triple-glazed panels and vacuum-integrated glazing and
insulated panels, without departing from the scope of the disclosure.
[0032] In the illustrated embodiment, an interior glazing gasket 206 is arranged (secured)
between the interior pane 204a and an interior portion of the sill 212, and an exterior
glazing gasket 208 is arranged (secured) between the exterior pane 204b and an exterior
portion of the sill 212. Each gasket 206, 208 may be secured between opposing rigid
components of the window system 200, i.e., the panes 204a,b and corresponding portions
of the sill 212. In this cross-section view, the extent of the interior and exterior
glazing gaskets 206, 208 is not fully visible. However, the interior and exterior
glazing gaskets 206, 208 may fully surround the perimeter of their respective panes
204a,b, or may be limited to one side of their respective panes 204a, b.
[0033] According to embodiments of the present disclosure, the interior and exterior gaskets
206, 208 form part of the system 100 of FIG. 1. More specifically, the interior glazing
gasket 206 may facilitate the detection of a disturbance (e.g., deflection, deformation,
compression, destruction, vibration, etc.) to the panel 202 from inside or outside
of the building, as well as any tampering with the interior pane 204a or the interior
glazing gasket 206 from inside of the building. Similarly, the exterior glazing gasket
208 may be configured to help detect any disturbance to the panel 202 from inside
or outside of the building, as well as any tampering with the exterior pane 204a or
the exterior glazing gasket 208 from outside of the building.
[0034] Accordingly, the gaskets 206, 208 may replace and otherwise operate as the gasket
102 of the system 100 of FIG. 1. A baseline resistance of the gaskets 206, 208 may
be read once installed in the window assembly 200. With the baseline resistance determined
and recorded, any deflection, deformation, destruction, or vibration (i.e., "disturbance")
of the panel 202 may cause the interior glazing gasket 206 or the exterior glazing
gasket 208 to be compressed or allowed to expand, which will alter the resistance
across the material of either gasket 206, 208. If a measured resistance does not match
the baseline resistance, or fall within a pre-defined resistance threshold, that may
be an indication that one or both of the gaskets 206, 208 has undergone or is subject
to a disturbance and a signal may be generated and sent indicating the same. Further,
the glazing gaskets 206, 208 may be utilized to determine the proper installation
of any panels 202, such as those installed with beaded glazing, through the comparison
of the resistance of the gaskets 206,208 to a predefined baseline for correct installation.
[0035] In some embodiments, the window assembly 200 may further include a glazing or sealing
gasket 210, alternately referred to as a "weathering" gasket, arranged and otherwise
configured to generate a sealed interface between opposing portions of the sill 212
and the sill receptor 214 when the window assembly 200 is moved to the closed position.
In some embodiments, as illustrated, the sealing gasket 210 may be attached to the
sill 212, but could alternatively be attached to the sill receptor 214, without departing
from the scope of the disclosure. Accordingly, the sealing gasket 210 may be secured
between opposing rigid components of the window system 200, i.e., the sill 212 and
the sill receptor 214.
[0036] As the window assembly 200 is transitioned between the open and closed positions,
the sealing gasket 210 will deform, e.g., the sealing gasket 210 expands when the
window assembly 200 is open and compresses when the window assembly 200 is closed.
Similar to the glazing gaskets 206, 208, the sealing gasket 210 may replace the gasket
102 in the system 100 of FIG. 1, and baseline resistance measurements of the sealing
gasket 210 may be taken for both the open and closed positions. Accordingly, the sealing
gasket 210 may act as a sensor for determining the status of the window assembly 200
as either "open", "closed", or "partially closed", depending on the measured resistance.
If a measured resistance does not match the baseline resistance, or fall within a
pre-defined resistance threshold, that may be an indication that the window assembly
200 has moved or is being moved to the open position. This information may be used
for proper building maintenance, and the determination of an unsealed window assembly
200 may aid in both building security and ecological initiatives.
[0037] FIG. 3 is a cross-sectional side view of another example fenestration system 300
that may incorporate the principles of the present disclosure. The fenestration system
300 comprises a door assembly that may incorporate one or more systems 100 described
with reference to FIG. 1. Accordingly, the fenestration system 300 will be referred
to herein as the "door assembly 300".
[0038] As illustrated, the door assembly 300 includes a door 302 that includes an upper
stile or "head" 304 and a panel 306 mounted to the door 302. The door assembly 300
also includes a door frame 314, such as a head receptor or "header" configured to
engage the head 304 of the door 302 when the door 302 is in the closed position. The
panel 306 may be similar in some respects to the panel 202 of FIG. 2, and may thus
be made of a double-paned glass having a first or "interior" pane 308a and a second
or "exterior" pane 308b. The panes 308a,b may be laterally spaced from each other
and the space between the panes 308a,b may be filled with air or an inert gas to help
control transmission of thermal energy by radiation and convection between the interior
of the building and the exterior environment. Accordingly, the panel 306 may comprise
a conventional "double-glazed" frame arrangement.
[0039] An interior glazing gasket 312 may be arranged (secured) between the interior pane
308a and an interior portion of the head 304, and an exterior glazing gasket 310 may
be arranged between the exterior pane 308b and an exterior portion of the head 304.
Each gasket 310, 312 may be secured between opposing rigid components of the door
assembly 300, the panes 308a,b and corresponding portions of the head 304. Similar
to the glazing gaskets 206, 208 of FIG. 2, the glazing gaskets 310, 312 may be utilized
to determine the proper installation of the panel 306 (or either pane 308a,b) through
comparison of the resistance of the gaskets 310, 312 to a predefined baseline for
correct installation. The further functions of the interior and exterior glazing gaskets
310, 312 may be similar or equivalent to that of the interior and exterior glazing
gaskets 206, 208 of FIG. 2, and as such will not be described again.
[0040] The door frame 314 may be mounted to a lower (bottom) surface 316 of the building
or room in which the door assembly 300 is installed, such as the bottom of a concrete
slab or the like. The door assembly 300 may further include one or more glazing or
sealing gaskets, shown as a first sealing gasket 318a and a second sealing gasket
318b, configured to generate a sealed interface between the door frame 314 and the
door 302 when the door 302 is in the closed position. In the illustrated embodiment,
the first sealing gasket 318a is secured to the door frame 314, but could alternatively
be secured to the door 302. Similarly, the second sealing gasket 318b is shown secured
to the door 302, but could alternatively be secured to the door frame 314, without
departing from the scope of this disclosure.
[0041] The sealing gaskets 318a,b may serve a similar purpose and function as the sealing
gasket 210 of FIG. 2, and as such will not be described in further detail. It should
be noted that while the sealing gaskets 318a,b are shown within the header section
of the door assembly 300, the sealing gaskets 318a,b may run along the entire perimeter
of the door 302 and the door frame 314 without departing from the scope of this disclosure.
[0042] FIG. 4 is a cross-sectional top view of another example fenestration system 400 that
may incorporate the principles of the present disclosure. The fenestration system
400 comprises a curtain wall assembly that may incorporate one or more systems 100
described with reference to FIG. 1. Accordingly, the fenestration system 400 will
be referred to herein as the "curtain wall assembly 400".
[0043] As illustrated, the curtain wall assembly 400 may be configured to help laterally
support and/or secure one or more glazing panels, shown as a first glazing panel 402a
and a second glazing panel 402b. The glazing panels 402a,b may comprise one or more
panes of window glass, one or more panes of polycarbonate, or one or more panels of
another material that is clear, translucent, tinted, or opaque, without departing
from the scope of the disclosure. As illustrated each glazing panel 402a,b includes
a first or "exterior" panel 404a and a second or "interior" panel 404b. The space
between the first and second glass panels 404a,b may be filled with air or an inert
gas to help control transmission of thermal energy by radiation and convection between
the interior of the building and the exterior environment. Accordingly, the glazing
panels 404a,b may each comprise a conventional "double-glazed" frame arrangement.
It will be appreciated, however, that the principles of the present disclosure may
be equally applicable to other glazing panel designs and configurations, including
triple-glazed panels and glazing panels with non-transparent insulated panel infills,
without departing from the scope of the disclosure.
[0044] As illustrated, the curtain wall assembly 400 further includes a vertical member
406, referred to herein as a "mullion." The mullion 406 may comprise a rigid extrusion
made of aluminum, an aluminum alloy, or other metals and metal alloys. The curtain
wall assembly 400 further includes a pressure plate 408 and a cover 410 removably
coupled to the pressure plate 408. The cover 410 provides an architectural finishing
detail while simultaneously covering a vertical gap between the first and second glazing
panels 402a,b. The pressure plate 408 may be operatively coupled to the mullion 406
with a mechanical fastener 412, which extends through a glazing pocket 414 defined
laterally between the mullion 406 and the pressure plate 408. The glazing pocket 414
may also be defined horizontally between the first and second glazing panels 402a,b.
The fastener 412 may be received within or otherwise threaded into a portion of the
mullion 406.
[0045] The curtain wall assembly 400 further includes corresponding vertically-extending
interior gaskets 416 that interpose the glazing panels 402a,b and the mullion 406,
and corresponding vertically-extending exterior gaskets 418 that interpose the glazing
panels 402a,b and the pressure plate 408. Accordingly, each gasket 416, 418 may be
secured between opposing rigid components of the curtain wall assembly 400; e.g.,
the first and second glazing panels 402a,b and the mullion 406 or the pressure plate
408. While the illustrated embodiment depicts the vertical sections of the curtain
wall assembly 400, such as the mullion 406, the discussion herein may be equally applicable
to horizontal sections of the curtain wall assembly 400, such as a transom (not shown).
[0046] The interior and exterior glazing gaskets 416, 418 may be similar or equivalent to
that of the interior and exterior glazing gaskets 206, 208 of FIG. 2, and as such
will not be described in any further detail.
[0047] Since the mullion 406 and the pressure plate 408 are mated through the use of the
fastener 412, prior measurements of the resistance through the glazing gaskets 416,
418 may be taken for properly installed threaded fasteners 412, and the measurements
may be used as a baseline for further installation. Therefore, during installation
of the threaded fastener 412, the proper installation of the curtain wall assembly
400 may be monitored and assessed through the resistance measured through the interior
glazing gaskets 416 and exterior glazing gaskets 418. Any deviation from the baseline
resistance, outside of a predefined threshold, may indicate an over- tightened or
under-tightened threaded fastener 412. Further, after installation, any tampering
to the threaded fastener 412 may be detected through the simultaneous change in resistance
for the interior glazing gaskets 416 and exterior glazing gaskets 418.
[0048] In addition to the functions and uses of the gaskets described herein above, the
pressure-transducing gasket systems described herein may also be useful and otherwise
incorporated into the motorization and automation of windows and door systems. In
such embodiments, the gasket systems may help ensure that the window or door stop
in a safe way if they are obstructed. The gasket sensor could be used to detect obstructions
when a door or window is being closed, and the sensor could then be used as part of
a closed loop feedback system to tell the motor that there is an obstruction and to
stop closing.
[0049] Therefore, the disclosed systems and methods are well adapted to attain the ends
and advantages mentioned as well as those that are inherent therein. The particular
embodiments disclosed above are illustrative only, as the teachings of the present
disclosure may be modified and practiced in different but equivalent manners apparent
to those skilled in the art having the benefit of the teachings herein. Furthermore,
no limitations are intended to the details of construction or design herein shown,
other than as described in the claims below. It is therefore evident that the particular
illustrative embodiments disclosed above may be altered, combined, or modified and
all such variations are considered within the scope of the present disclosure. The
systems and methods illustratively disclosed herein may suitably be practiced in the
absence of any element that is not specifically disclosed herein and/or any optional
element disclosed herein. While compositions and methods are described in terms of
"comprising," "containing," or "including" various components or steps, the compositions
and methods can also "consist essentially of" or "consist of" the various components
and steps. All numbers and ranges disclosed above may vary by some amount. Whenever
a numerical range with a lower limit and an upper limit is disclosed, any number and
any included range falling within the range is specifically disclosed. In particular,
every range of values (of the form, "from about a to about b," or, equivalently, "from
approximately a to b," or, equivalently, "from approximately a-b") disclosed herein
is to be understood to set forth every number and range encompassed within the broader
range of values. Also, the terms in the claims have their plain, ordinary meaning
unless otherwise explicitly and clearly defined by the patentee. Moreover, the indefinite
articles "a" or "an," as used in the claims, are defined herein to mean one or more
than one of the elements that it introduces. If there is any conflict in the usages
of a word or term in this specification and one or more patent or other documents
that may be incorporated herein by reference, the definitions that are consistent
with this specification should be adopted.
[0050] As used herein, the phrase "at least one of" preceding a series of items, with the
terms "and" or "or" to separate any of the items, modifies the list as a whole, rather
than each member of the list (i.e., each item). The phrase "at least one of" allows
a meaning that includes at least one of any one of the items, and/or at least one
of any combination of the items, and/or at least one of each of the items. By way
of example, the phrases "at least one of A, B, and C" or "at least one of A, B, or
C" each refer to only A, only B, or only C; any combination of A, B, and C; and/or
at least one of each of A, B, and C.
[0051] The use of directional terms such as above, below, upper, lower, upward, downward,
left, right, and the like are used in relation to the illustrative embodiments as
they are depicted in the figures, the upward direction being toward the top of the
corresponding figure and the downward direction being toward the bottom of the corresponding
figure.
1. A fenestration system, comprising:
opposing first and second rigid components;
a gasket interposing the first and second rigid components, the gasket being made
of an electrically-conductive material and exhibiting a baseline resistance when arranged
between the first and second rigid components; and
a control system communicably coupled to the gasket with one or more wires and operable
to monitor a real-time resistance of the gasket and generate a signal when the real-time
resistance deviates from the baseline resistance.
2. The system of claim 1, wherein the electrically-conductive material is selected from
the group consisting of ethylene propylene diene monomer rubber, a conductive foam,
a conductive elastomer, and any combination thereof.
3. The system of claim 1, further comprising a power source that provides electrical
power the control system and the one or more wires.
4. The system of claim 1, further comprising a control unit communicably coupled to the
control system and operable to provide a visual display of a status of the control
system, report the status to a building management system, report the status to a
smart home system, or any combination thereof.
5. The system of claim 1, wherein the real-time resistance deviates from the baseline
resistance when the gasket undergoes a disturbance.
6. The system of claim 5, wherein three or more wires are coupled to the gasket at predefined
intervals and wherein a localized, real-time resistance is measured between two of
the three or more wires.
7. The system of claim 1, wherein the fenestration system comprises a window assembly
and the first rigid component comprises a sill and the second rigid component comprises
a panel comprising one or more window panes.
8. The system of claim 1, wherein the fenestration system comprises a window assembly
and the first rigid component comprises a sill and the second rigid component comprises
a sill receptor.
9. The system of claim 1, wherein the fenestration system comprises a door assembly and
the first rigid component comprises a stile and the second component comprises a panel
comprising one or more panes of glass.
10. The system of claim 1, wherein the fenestration system comprises a door assembly and
the first rigid component comprises a door frame and the second component comprises
a door.
11. The system of claim 1, wherein the fenestration system comprises a curtain wall assembly
and the first rigid component comprises a mullion or transom or a pressure plate and
the second rigid component comprises one or more glazing panels.
12. The system of claim 1, wherein the fenestration system comprises a curtain wall assembly
comprising a mullion or transom, a pressure plate, and a fastener, and wherein installation
of the fastener is monitored through the real-time resistance of the gasket installed
within the curtain wall assembly.
13. The system of claim 1, wherein the gasket operates as a glazing or sealing gasket.
14. The system of claim 1, further comprising an alarm in communication with the control
system and operable to generate an audible or visual alarm upon receipt of the signal.
15. A method of monitoring a fenestration system, comprising:
measuring a baseline resistance across a gasket forming part of the fenestration system,
the fenestration system further including:
opposing first and second rigid components, the gasket interposing the first and second
rigid components and being made of an electrically-conductive material; and
a control system communicably coupled to the gasket with one or more wires;
monitoring a real-time resistance of the gasket with the control system; and
generating a signal with the control system when the real-time resistance deviates
from the baseline resistance.
16. The method of claim 15, wherein measuring the baseline resistance across the gasket
comprises measuring the baseline resistance when the gasket is arranged between the
first and second rigid components.
17. The method of claim 15, further comprising at least one of:
providing a visual display of a status of the control system with a control unit communicably
coupled to the control system;
report the status to a building management system with the control unit; and
report the status to a smart home system with the control unit.
18. The method of claim 15, further comprising subjecting the gasket to a disturbance
and thereby deviating the real-time resistance from the baseline resistance.
19. The method of claim 15, further comprising performing a sealing function with the
gasket.
20. The method of claim 15, wherein generating the signal comprises triggering an alarm
in communication with the control system.