Refrigerator having a shelf assembly with weight detectable

Abstract

A refrigerator can include a cabinet, a door, and a shelf assembly. The cabinet can define a refrigerated compartment. The door can be rotatably hinged to the cabinet for selective access to the refrigerated compartment. The shelf assembly can be disposed below an image module within the refrigerated compartment. The shelf assembly can include a mounting bracket attached to the cabinet, a shelf attached to the mounting bracket, and a weight sensor disposed within the cabinet in cantilevered engagement with the shelf to detect a mass stored on the shelf.

Description

TECHNICAL FIELD

[0001] The present invention relates generally to refrigerators, and more particularly, to a refrigerator having features for detecting weight characteristics of items on a shelf assembly. BACKGROUND

[0002] Storage bins, such as refrigerators and pantries, generally provide an enclosed chamber for housing a variety of items or objects. For example, a refrigerator generally includes a cabinet having a refrigerated compartment. A user can place food or objects within the refrigerated compartment to prevent such food from spoiling. As a result, the useful life of perishable items or objects can be extended.

[0003] Over time, a refrigerator's refrigerated compartment can become filled with a large or numerous quantity of stored items (e.g., food). As the stored items accumulate, a user of the refrigerator can have difficulty identifying the items located within the refrigerator. Additionally, the user can also have difficulty determining the quantity of certain items within the refrigerator. This is especially true when multiple users add or remove items from a common refrigerator without communicating with other users. As a result, a user can inadvertently purchase an item that is not needed or fail to purchase an item that is running low. For example, items such as liquids or produce are stored within containers that a user can have difficulty viewing. These items can be used sporadically and in portions such that all of the contents of the container are not emptied until multiple uses. Additionally or alternatively, some users can not be aware that certain items have been cleaned or consumed. As a result, the user can not be able to determine when the container is near empty and when it needs to be replaced.

[0004] Some existing appliances have attempted to address these issues by requiring the user to manually enter each item being stored. Other appliances have employed various methods, such as scales, to assess or guess the quantity of items being stored or identified. Nonetheless, these attempts have been either too cumbersome or too costly. For example, a typical scale requires various wires to be routed to a particular shelf or area of the appliance. If multiple scales or weight sensing areas are needed, additional wires and connections are obviously required. As a result, the complexity and cost associated with load weight (especially across multiple shelves) detection is very significant. Furthermore, even once the weight is detected, conventional systems still require the user to manually enter or know the item being weighed, which can be very difficult or very cumbersome.

[0005] Accordingly, a refrigerator having features for assisting a user in tracking the contents of a refrigerator's refrigerated compartment would be highly beneficial. In particular, a refrigerator having features for assisting a user in accurately tracking the quantity or volume of a refrigerator's refrigerated compartment's contents without significantly complicating the assembly or operation (e.g., across multiple shelves) would be highly beneficial. SUMMARY

[0006] These and other features, aspects, and advantages of the present application will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and serve to explain the principles of the application.

[0007] In one example aspect of the disclosure, a refrigerator is provided. The refrigerator can include a cabinet, a door, and a shelf assembly. The cabinet can define a refrigerated compartment. The door can be rotatably hinged to the cabinet for selective access to the refrigerated compartment. The shelf assembly can be disposed below an image module within the refrigerated compartment. The shelf assembly can include a mounting bracket attached to the cabinet, a shelf attached to the mounting bracket, and a weight sensor disposed within the cabinet in cantilevered engagement with the shelf to detect a mass stored on the shelf.

[0008] In another example aspect of the disclosure, a refrigerator is provided. The refrigerator can include a cabinet, a door, and a shelf assembly. The cabinet can define a refrigerated compartment. The door can be rotatably hinged to the cabinet for selective access to the refrigerated compartment. The shelf assembly can be disposed below an image module within the refrigerated compartment. The shelf assembly can include a mounting bracket attached to the cabinet, a shelf attached to the mounting bracket, a sensor housing disposed within the refrigerated compartment and movable relative to the mounting bracket, and a weight sensor secured to the sensor housing in cantilevered engagement with the shelf to detect a mass stored on the shelf.

[0009] These and other features, aspects, and advantages of the present application will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and serve to explain the principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0010] The specification discloses the application to those skilled in the art in sufficient and enforceable detail to make and use the application, with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification, and are illustrative of embodiments of the application.

[0011] Figure 1 A front view of a refrigerator according to an example embodiment of the disclosure is provided.

[0012] Figure 2 A front view of a refrigerator according to an example embodiment of the disclosure is provided, with a fresh food door shown in an open position.

[0013] Figure 3 A front view of a refrigerator according to an example embodiment of the disclosure is provided, with a fresh food door shown in an open position.

[0014] Figure 4 A perspective view of a portion of a shelf assembly of a refrigerator according to an example embodiment of the disclosure is provided.

[0015] Figure 5 A perspective view of a portion of a shelf assembly of a refrigerator according to an example embodiment of the disclosure is provided.Figure 4 rear perspective view of the exemplary shelf assembly of

[0016] Figure 6 Provided is Figure 4 rear perspective view of the exemplary shelf assembly of

[0017] Figure 7 Provided is Figure 4 side sectional view of a portion of the exemplary shelf assembly of

[0018] Figure 8 Provided is Figure 4 enlarged perspective view of a portion of the exemplary shelf assembly of

[0019] Figure 9 Provided is a perspective view of a portion of a shelf assembly of a refrigerator according to an exemplary embodiment of the present disclosure.

[0020] Figure 10 Provided is Figure 9 partial side view of a portion of the exemplary shelf assembly of

[0021] Figure 11 Provided is a perspective view of a portion of a shelf assembly of a refrigerator according to an exemplary embodiment of the present disclosure.

[0022] Figure 12 Provided is Figure 11 side view of a portion of the exemplary shelf assembly of

[0023] Figure 13 Provided is a perspective view of a portion of a shelf assembly of a refrigerator according to an exemplary embodiment of the present disclosure.

[0024] Figure 14 Provided is Figure 13 side view of a portion of the exemplary shelf assembly of DETAILED DESCRIPTION

[0025] Reference will now be made in detail to embodiments of the application, one or more examples of which are illustrated in the drawings. Each example is

[0026] As used herein, the term "or" is generally intended to mean include-in (i.e., "A or B" is intended to mean "A or B or both"). The terms "first," "second," and "third" can be used interchangably to distinguish one component from another and are not intended to signify location or importance of individual components.

[0027] Turning now to the drawings, Figure 1 A front view of a refrigerator 100 is provided in accordance with example embodiments of the present disclosure, with the refrigerator 100's fresh food door 128 shown in a closed position. Figure 2 A front view of the refrigerator 100 is provided, with the fresh food door 128 shown in an open position to illustrate which 100's food preservation chamber 122.

[0028] The refrigerator 100 includes a housing or cabinet 120 extending in a vertical direction V between a top 101 and a bottom 102. The cabinet 120 defines a refrigerated compartment for receiving and storing food products. In particular, the cabinet 120 defines a food preservation chamber 122 located at or near the top 101 of the cabinet 120, and a freezer compartment 124 disposed at or near the bottom 102 of the cabinet 120. As such, the refrigerator 100 is generally referred to as a bottom freezer refrigerator. However, it should be appreciated that the benefits of the present disclosure apply to other types and styles of storage cabinets, such as a top freezer refrigerator, a side-by-side refrigerator, or a non-refrigerated food storage cabinet. Accordingly, the description set forth herein is for illustrative purposes only and is not intended to limit the disclosure in any way to any particular storage cabinet or refrigerated compartment configuration.

[0029] The fresh food door 128 is rotatably hinged to an edge of the cabinet 120 for selectively accessing the food preservation chamber 122. In addition, a freezer door 130 is disposed below the fresh food door 128 for selectively accessing the freezer compartment 124. The freezer door 130 is coupled to a freezer drawer 142 (not shown) that is slidably mounted within the freezer compartment 124. As discussed above, the fresh food door 128 and the freezer door 130 are shown in a closed configuration in Figure 1 and the fresh food door 128 is shown in an open position in Figure 2

[0030] Turning now to Figure 2 ​As will be appreciated by those skilled in the art, various storage components are installed within the fresh food compartment 122 in order to store food items therein. In particular, the storage components include a bin 140, a drawer 142, and shelves 144 installed within the fresh food compartment 122. The bin 140, drawer 142, and shelves 144 are configured to house stored items (e.g., beverages or solid food items) and can assist in organizing such food items. As an example, the drawer 142 can house fresh food items (e.g., vegetables, fruits, or cheese) and can extend the useful life of such fresh food items. As will be described in greater detail below, one or more of the shelves 144 or drawer 142 can be included in, or as part of, a shelf assembly 200 that is installed into the fresh food compartment 124.

[0031] The refrigerator 100 also includes features for assisting a user in identifying food items located within the fresh food compartment 122 or the freezer compartment 124. A user can utilize such features, for example, to view food items (i.e., stored items) stored within the fresh food compartment 122 or the freezer compartment 124, or to create a list of such stored items. Such features will be discussed in greater detail below.

[0032] Figure 3 A schematic view of the refrigerator 100 is provided. The refrigerator 100 includes a controller 150 that is operably coupled to, or in communication with, components of the refrigeration system (not shown) of the refrigerator 100 that are configured to cool the fresh food compartment 122 or the freezer compartment 124. These components include a compressor 170, an evaporator fan 172, and a condenser fan 174. The controller 150 can selectively operate these components in order to cool the fresh food compartment 122 or the freezer compartment 124. The controller 150 is also in communication with a temperature control (e.g., a thermocouple or thermistor). The temperature control can be located in the fresh food compartment 122 or the freezer compartment 124 Figure 2 ) of the refrigerator 100. The controller 150 can receive a signal from the temperature control corresponding to the temperature of the fresh food compartment 122 or the freezer compartment 124. The controller 150 can also include an internal timer for calculating elapsed time periods.

[0033] The controller 150 can include a memory and one or more microprocessors, CPUs, or the like, such as a general or special purpose microprocessor that is operable to execute programmed instructions or micro-control code associated with the operation of the refrigerator 100. The memory can represent random access memory, such as dynamic random access memory (DRAM), or read only memory, such as read only memory (ROM) or FLASH. In some embodiments, the processor executes non-transitory programmed instructions stored in the memory. For certain embodiments, these instructions include a software package configured to operate the refrigerator 100 or perform operational routines. The memory can be a separate component from the processor or can be on-board in the processor. Alternatively, the controller 150 can be configured to perform control functions without reliance on software, e.g., using a combination of discrete analog or digital logic circuits; such as switches, amplifiers, integrators, comparators, flip-flops, and gates, etc.

[0034] The controller 150 can be located in various locations throughout the refrigerator 100. Input / output (“I / O”) signals can be routed between the controller 150 and various operational components of the refrigerator 100. One or more components of the refrigerator 100 can communicate (e.g., electrically communicate) with the controller 150 via one or more conductive signal lines or a shared communication bus. Additionally or alternatively, one or more components of the refrigerator 100 can communicate (e.g., wirelessly communicate) with the controller 150 via one or more wireless signal bands.

[0035] In some embodiments, the refrigerator 100 also includes a camera or image module 160. The image module 160 can be any type of device suitable for capturing two-dimensional pictures or images. As one example, the image module 160 can be a video or digital camera having an electronic image sensor (e.g., a charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) sensor). As an additional or alternative example, as will be appreciated, the image module 160 can include a pressure-sensing mat including a plurality of pressure-detecting cells to detect relative changes in pressure. The pressure-sensing mat can be disposed on one or more shelves 144 (or shelves 224, Figures 4 to 7 ) and, optionally, formed of a substantially transparent material. Thus, the pressure-sensing mat can detect one or more objects placed on the corresponding one or more shelves 144. Further, a two-dimensional image (e.g., a footprint of one or more objects placed on the corresponding shelves 144) can be stitched using signals received from the pressure-sensing mat. As yet another additional or alternative example, as will be appreciated, the image module 160 can include a light beam emitting sensor (e.g., a lidar, radar, etc.) to detect objects within a line of sight or transmission of the sensor.

[0036] When assembled, the image module 160 is in communication (e.g., electrical or wireless communication) with the controller 150 such that the controller 150 can receive signals from the image module 160 corresponding to images captured by the image module 160.

[0037] Generally, the image module 160 is located on the refrigerator 100. In some embodiments, the image module 160 is mounted within the fresh food compartment 122 on its top (e.g., adjacent to the top 101). For example, the image module 160 can be secured to or directed through a top wall of a liner that defines the fresh food compartment 122. In such embodiments, the image module 160 can be directed downwardly, as shown. Figure 2

[0038] In certain embodiments, the image module 160 is directed toward one or more refrigeration compartments (e.g., the fresh food compartment 122, Figure 2 ). For example, the image module 160 can be directed toward at least a portion of any particular one or combination of the drawers 142 and the shelves 144 Figure 2 . Thus, in some such embodiments, the image module 160 can capture images of one of the drawers 142, all of the drawers 142, one of the shelves 144, all of the shelves 144, or any suitable combination thereof.

[0039] Although the image module 160 is shown as being mounted within the fresh food compartment 122, it should be appreciated that additional or alternative embodiments include a camera or image module mounted on another suitable portion of the refrigerator, such as the door 128 (e.g., a digital camera having an electronic image sensor such as a charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) sensor; a pressure-sensing mat; a light beam-emitting sensor, etc.). Such a camera assembly can be directed toward the exterior or front of the refrigerator 100 and can thus capture images of a user and area located in front of the refrigerator 100 (e.g., when the corresponding door is in the closed position).

[0040] In certain embodiments, the refrigerator 100 includes an integrated display 180. The integrated display 180 can be mounted on the fresh food door 128 Figure 1 . The integrated display 180 is in communication with the controller 150 such that the integrated display 180 can receive signals from the controller 150 corresponding to images captured by the image module 160. The integrated display 180 can receive such signals from the controller 150 and visually present the image to a user. The integrated display 180 can include, for example, a liquid crystal display panel (LCD), a plasma display panel (PDP), or any other suitable mechanism for displaying images (e.g., a projector).

[0041] ​Independent of or in addition to the integrated display 180, the refrigerator 100 can include a communication assembly 184 in communication with the controller 150. Generally, the communication assembly 184 can be mounted on any suitable portion of the refrigerator 100, such as within the cabinet 120 or the door 128. In certain embodiments, the communication assembly includes a speaker (e.g., a dynamic speaker, an electrostatic speaker, a planar magnetic speaker, a piezoelectric speaker, etc.). As understood, the speaker can be configured to produce sound waves from one or more electrical signals (e.g., digital sound signals received from the controller 150). Thus, the speaker can convey information to a user in audible form. In additional or alternative embodiments, the communication assembly includes a microphone (e.g., a dynamic microphone, a ribbon microphone, an optical microphone, a piezoelectric microphone, etc.). As understood, the microphone can produce one or more electrical signals (e.g., to be received by the controller 150) from one or more received sound waves (e.g., from a user). Thus, the microphone can receive audible cues or commands from a user that can be directed to the controller 150.

[0042] In example embodiments, the refrigerator 100 includes a network interface (not shown) that couples the refrigerator 100 (e.g., the controller 150) to a network 190 such that the refrigerator 100 can send and receive information over the network 190. The network 190 can be any wired or wireless network, such as a WAN, a LAN, or a HAN.

[0043] In optional embodiments, the refrigerator 100 includes a user detection assembly 186. Generally, the user detection assembly 186 includes one or more sensors configured to detect a biometric or a personalized indicia corresponding to a particular individual user. As one example, the user detection assembly 186 can include a forward-facing camera configured to recognize or authenticate a user’s face based on a captured two-dimensional image. As another example, the user detection assembly 186 can include a fingerprint imaging sensor configured to visually detect a user’s fingerprint. As yet another example, the user detection assembly 186 can include a signal detection sensor configured to detect a device address through a wireless communication band (e.g., a BLE band using shortwave UHF radio waves in the ISM band from 2.4 GHz to 2.485 GHz). By way of example, the device address can be a programmed Bluetooth address of the mobile display 182. Thus, the user detection assembly 186 can determine whether and when the mobile display 182 is in close proximity to the refrigerator 100.

[0044] In certain embodiments, the image module 160 is included as part of the user detection assembly 186. As an example, the user detection assembly 186 can be configured to identify or authenticate a user from a two-dimensional image captured at the image module 160. In some such embodiments, the controller 150 is further configured to identify one or more defining features below the elbow of the user, such as skin tone, arm / hand size, jewelry, typical clothing, etc. As will be appreciated, identifying such defining features can be performed by edge matching, divide-and-conquer searching, grayscale matching, receptive field response histograms, or another suitable routine (e.g., a routine executed at the controller 150 based on one or more images captured from the image module 160).

[0045] As generally understood, during use, such as during an image capture sequence, the image module 160 can capture one or more two-dimensional images (e.g., as a video feed or a series of sequential still images) that can be transmitted (e.g., in the form of a data signal) to the controller 150. Optionally, the image capture sequence can be initiated by a predetermined user action, such as opening the door 128, detecting movement within the refrigeration compartment (e.g., the food preservation compartment 122), engaging or moving within range of the user detection assembly 186, providing a user input at the communication assembly 184 or the integrated display 180, etc.

[0046] As will be described in greater detail below, one or more sensors 210 can also be provided within the food preservation compartment 122 or the freezer compartment 124. Generally, the weight sensor 210 is provided as or includes any suitable electronic load sensor or unit configured to generate one or more electronic signals in accordance with (e.g., in proportion to) a load thereon. As will be appreciated, for example, the weight sensor 210 can include a suitable strain gauge (e.g., a foil strain gauge), a force sensitive resistor, a capacitive sensor, a hydraulic sensor, or an inductive sensor. When assembled, the weight sensor 210 can be in operable (e.g., electrical or wireless) communication with the controller 150 and, as such, can transmit one or more signals thereto (e.g., in accordance with a weight or mass detected at the weight sensor 210).

[0047] In some embodiments, one or more remote servers 192, such as network servers, are in operable communication with the controller 150. The remote servers 192 can be used to host a point-of-sale system for a retailer. In other words, the remote servers 192 can be or include a retailer point-of-sale server that tracks, for example, identifiers and quantities of purchased items, time or date stamps of purchased items, pricing of purchased items, customer identifiers (i.e., identifiers of purchasing customers), and the like. Additionally or alternatively, the remote servers 192 can be used to host an inventory management system for a retailer. In other words, the remote servers 192 can include or provide as a retailer inventory management server that tracks, for example, inventory data (e.g., expiration data, location data, cost data, and the like) related to items provided for sale by the retailer. Also, additionally or alternatively, the remote servers 192 can be used to host one or more information databases.

[0048] The remote servers 192 can be implemented using one or more any suitable computing devices. The remote servers 192 can include one or more processors and one or more storage devices (i.e., memory). The one or more processors can be any suitable processing devices (e.g., processor cores, microprocessors, ASICS, FPGAs, microcontrollers, etc.) and can be one processor or a plurality of operatively connected processors. The storage device(s) can include one or more non-transitory computer-readable storage media, such as RAM, ROM, EEPROM, EPROM, flash memory devices, magnetic disks, etc., and combinations thereof. The storage device(s) can store data and instructions that can be executed by the processor(s) to cause the remote servers 192 to perform operations. For example, the instructions can be instructions for receiving / transmitting point-of-sale data signals, receiving / transmitting inventory management data signals, receiving / transmitting data signals related to stored items, and the like.

[0049] The storage device(s) can also include data that can be retrieved, manipulated, created, or stored, such as point-of-sale data, customer identification data, inventory data, expiration data, and the like. The data can be stored in one or more databases. The one or more databases can be connected to the remote servers 192 by a high-bandwidth LAN or WAN, or can also be connected to the remote servers 192 by the network 502. The one or more databases can be split such that they are located in multiple regions.

[0050] Remote server 192 includes a network interface, enabling it to connect to or communicate with one or more network nodes via one or more networks (e.g., network 190). Furthermore, remote server 192 can exchange data with one or more nodes via network 190. Specifically, remote server 192 can exchange data with controller 150. Although not illustrated, it should be understood that remote server 192 can also exchange data with any number of client devices (e.g., mobile display 182) via network 190.

[0051] Now roughly turning to Figures 4 to 14 Various views of an exemplary embodiment of the shelf assembly 200 are provided. As shown, the shelf assembly 200 includes one or more mounting brackets 242 and shelves 224 (e.g., the same as...). Figure 2 The shelf 144 is included together with or as a shelf, along with one or more weight sensors 210. During assembly, the mounting bracket 242 can be attached to the housing 102. Figure 2 Such as the rear of a food preservation compartment 122. In some embodiments, mounting brackets 242 are mounted on or as part of the inner liner of the food preservation compartment 122. Additionally or alternatively, mounting brackets 242 may include or be provided as vertically extending guide rails. In the illustrated embodiment, mounting brackets 242 are mounted to the rear wall 240 of the inner liner (e.g., via one or more mechanical fasteners, adhesives, etc.). Optionally, multiple mounting brackets 242 may be secured to a support panel 212 to optionally attach one or more shelves 224. For example, mounting brackets 242 may be secured to the rear wall 240 of the housing 102, while one or more shelves 224 may be movable relative to the mounting brackets 242 (e.g., guided by a user). In some such embodiments, mounting brackets 242 define multiple different heights to which a first shelf 224 or a second shelf 224 may be attached. As an example, these different heights can be provided through corresponding holes or grooves, in which the mating hooks 228 or engaging tabs 230 of the shelf 224 can be suspended or held.

[0052] Generally, the individual shelves 224 include a platform or surface for receiving a stored item or object placed within a corresponding freezer compartment (e.g., the food preservation chamber 122). In some embodiments, the shelves 224 include a horizontal platform 232 (e.g., formed of a rigid material such as a solid polymer, glass, ceramic, or metal). The horizontal platform 232 can be associated with a cantilever bracket 226 that extends rearwardly from the horizontal platform 232 so as to attach the individual shelf 224 to the mounting bracket 242. At least a portion of the cantilever bracket 226 can be vertically offset from (either below or above) the horizontal platform 232. In example embodiments, the cantilever bracket 226 is disposed below the horizontal platform 232. When assembled, the cantilever bracket 226 can hold the shelf 224 to the mounting bracket 242. By way of example, the cantilever bracket 226 can be selectively associated with the mounting bracket 242 (e.g., at one or more predefined channels or grooves). Optionally, the cantilever bracket 226 can include a mating hook 228 or an engagement tab 230 that can be inserted into the mounting bracket 242 to hold the shelf 224 at a predetermined height (e.g., within the food preservation chamber 122).

[0053] In some embodiments, a plurality of different shelves 224 are provided. Such shelves 224 can be spaced apart from one another. By way of example, two or more shelves 224 can be spaced apart along the vertical direction V. By way of additional or alternative example, two or more shelves 224 can be spaced apart along the lateral direction L. As a result, a plurality of surface planes on which stored items can be received can be defined. Optionally, the plurality of shelves 224 can be attached to one or more common mounting brackets 242. Thus, a first shelf 224 and a second shelf 224 can be attached to the cabinet 102 via one or more same mounting brackets 242. In some embodiments, one or more of the shelves 224 can be selectively movably mounted such that a height or lateral side at which the at least one shelf 224 is held to the support deck 212 can be changed (e.g., to accommodate various sizes or shapes of stored items within the food preservation chamber 122).

[0054] As noted above, one or more weight sensors 210 are provided within the cabinet 102. Generally, at least one weight sensor 210 is provided within the cabinet 102 and is configured to detect a stored mass on one or more corresponding shelves 224 (i.e., the weight or mass of stored items or objects placed on the corresponding shelves 224). In particular, the weight sensors 210 are configured to detect the stored mass via cantilever engagement. Thus, the weight sensors 210 can be provided in cantilever engagement with one or more corresponding shelves 224. For example, a foil strain gauge can receive lateral forces transmitted thereto at a point vertically offset from the horizontal platform 232 of the corresponding shelf 224. Advantageously, the weight sensors 210 can provide weight or mass detection of the corresponding shelves 224 without requiring electrical wiring or connections to be routed directly beneath the shelves 224 (e.g., within the fresh food compartment 122), which can otherwise complicate the assembly or interfere with daily use.

[0055] In some embodiments, the weight sensors 210 are attached or secured to a sensor housing 250, which can support or house at least a portion of the weight sensors 210. For example, the sensor housing 250 can include a unit body 252 defining a pocket within which the weight sensors 210 are retained. The sensor housing 250 itself can be provided with the fresh food compartment 122 (e.g., in an optional or fixed manner). Moreover, the sensor housing 250 can be movable relative to one or more mounting brackets 242. In particular, the sensor housing 250 can be movable within the cabinet 102 relative to the fixed mounting brackets 242, or the sensor housing 250 can be fixedly mounted within the cabinet 102 while allowing the mounting brackets 242 to be translated or rotated to some extent relative to the cabinet 102 and a portion of the sensor housing 250.

[0056] Now turning specifically to Figures 4 to 8 In example embodiments, the weight sensors 210 are provided behind the mounting brackets 242. In particular, the weight sensors 210 are mounted behind the mounting brackets 242 at the rear of the fresh food compartment 122. As shown, the mounting brackets 242 can define one or more apertures 254 through which a portion of the shelves 224 or cantilever brackets 226 can be received. For example, the engagement tabs 230 can be received through the apertures 254. The mating hooks 228 can be received through another aperture 254 (e.g., above the engagement tabs 230). In some such embodiments, the mounting brackets 242 define a plurality of different heights to which the first or second shelves 224 can be attached. As an example, the different heights can be provided by corresponding apertures 254 in which the mating hooks 228 or engagement tabs 230 of the shelves 224 can be suspended or retained.

[0057] The aperture 254 through which the engagement tab 230 is received can be horizontally (e.g., laterally or transversely) aligned with the weight sensor 210. When disposed through the aperture 254, the engagement tab 230 can extend to and abut (e.g., directly or indirectly) the weight sensor 210. In some such embodiments, the cantilevered bracket 226 contacts a resilient region 256 defined by the sensor housing 250 (e.g., in front of the weight sensor 210). During use, the resilient region 256 can deform in response to lateral forces directed through the engagement tab 230 and transmit at least a portion of such forces to the weight sensor 210.

[0058] In certain embodiments, the sensor housing 250 or the weight sensor 210 can be movably mounted with the cabinet 102 (e.g., within the food preservation chamber 122). In particular, the vertical height of the sensor housing 250 and the weight sensor 210 (i.e., position along the vertical direction V relative to the cabinet 102) can be adjustable (e.g., manually or automatically). In some such embodiments, the sensor housing 250 can be slidably mounted to the mounting bracket 242. Accordingly, the sensor housing 250 is moved (e.g., slides) vertically along or relative to the mounting bracket 242. Such movement can be manually or automatically directed by a user based on input provided to the controller 150. In some such embodiments, as will be appreciated, an electronic motor, such as a linear actuator (not shown), is attached to the housing to drive the sensor housing 250 (e.g., upward or downward). Optionally, a plurality of different heights can be defined for the sensor housing 250 (and thus for the weight sensor 210). Such heights can generally correspond to predefined heights of the shelves 224. In turn, a user can ensure that the weight sensor 210 can be engaged by the shelves 224 regardless of the height to which the shelves 224 are moved.

[0059] In Figures 4 to 8 In the illustrated embodiment, a barbed rear rail 258 is mounted within the cabinet 102. As shown, the barbed rear rail 258 can be disposed rearward (e.g., directly behind) from the mounting bracket 242. When assembled, the sensor housing 250 can be retained between the barbed rear rail 258 and the mounting bracket 242 (e.g., along the lateral direction T). Accordingly, lateral movement of the sensor housing 250 can be limited.

[0060] The barbed rear rail 258 can be arranged such that its barbs are vertically spaced apart and can in turn define a plurality of heights (e.g., for supporting the sensor housing 250). Further, the barbed rear rail 258 can be fixed to or relative to the liner that defines the fresh food compartment 122. The sensor housing 250 can include one or more contact teeth 260 that are complementary to the barbs of the barbed rear rail 258. The assembled shelf assembly 200 can allow the contact teeth 260 to selectively engage one or more barbs of the barbed rear rail 258 to retain the sensor housing 250 at a variable height. In particular, by virtue of the complementary arrangement, the contact teeth 260 can engage the barbs of the rear rail 258 and in turn retain the sensor housing 250 at a selected height. Nonetheless, the sensor housing 250 can be selectively moved in the vertical direction V, such as by lifting the teeth of the sensor housing 250 from one or more barbs of the barbed rear rail 258 at one height, sliding the sensor housing 250 vertically to some other height, and placing the teeth on the barbs of the barbed rear rail 258 that correspond to the other height. Optionally, a front handle 262 can extend from the sensor housing 250 (e.g., forward or laterally away from the contact teeth 260), which allows a user to easily grasp and manipulate the sensor housing 250 along the mounting bracket 242 or barbed rear rail 258.

[0061] Now turning specifically to Figure 9 and 10 In example embodiments, the weight sensor 210 can be directly attached to the shelf 224. For example, the weight sensor 210 can be fixed to the cantilevered bracket 226 below the horizontal platform 232. In some such embodiments, the sensor housing 250 is fixed to the cantilevered bracket 226. Optionally, the sensor housing 250 can be disposed below the mating hook 228. As noted above, for Figures 4 to 8 The shelf 224 can be selectively moved to different heights on the mounting bracket 242. However, in contrast to these embodiments, the sensor housing 250 can be moved with the corresponding shelf 224, such that the sensor housing 250 is selectively decoupled from the mounting bracket 242.

[0062] In some such embodiments, the weight sensor 210 and another portion of the refrigerator 100 (e.g., Figure 3electrical connections between the weight sensor 210 and the appliance 100. In particular, the socket connection stem 264 and the connection plug 266 can define a conductive path that allows signals to pass from the weight sensor 210 to another portion of the appliance 100. As shown, the socket connection stem 264 can be disposed rearwardly (e.g., directly behind) from the mounting bracket 242. The socket connection stem 264 can be wired to another portion of the cabinet 102 and define a plurality of receptacles 268 that align with a plurality of corresponding apertures 254 of the mounting bracket 242. The connection plug 266 can extend rearwardly from the unit body 252 to be received through the apertures 254 of the mounting bracket 242. When assembled, the connection plug 266 can be engaged with at least one of the receptacles 268 to establish electrical communication therebetween.

[0063] In particular, turning to Figure 11 and 12 , a support panel 212 can be provided to attach the mounting bracket 242 to the cabinet 102. For example, the support panel 212 can be secured to the cabinet 102 at a top end of the support panel 212. The mounting bracket 242 can be secured to the support panel 212. Further, a plurality of spaced apart shelves 224 can be attached to the support panel 212. For example, the shelves 224 can be secured forwardly from the support panel 212 to one or more of the mounting brackets 242 such that the support panel 212 is disposed rearwardly from the one or more shelves 224. The weight sensor 210 can be mounted on the cabinet 102 or the support panel 212 spaced apart from the one or more (e.g., all) shelves 224. In certain embodiments, the weight sensor 210 is disposed below the shelves 224. In particular, the weight sensor 210 can be mounted at or near a bottom end of the support panel 212. As shown, the weight sensor 210 can be sandwiched between the cabinet 102 and the support panel 212 to cantileveringly engage both. Advantageously, the weight sensor 210 can detect mass loads across a plurality of different shelves 224.

[0064] In particular, turning to Figure 13 and 14 , similar to embodiments of Figure 11 and 12 , the weight sensor 210 can be disposed proximate to the drawer support shelf 248. In some embodiments, the drawer support shelf 248 includes or is attached to one or more slide brackets 270 for receiving a slide storage drawer 142 Figure 2). Conversely, one or more slide brackets 270 can be mounted to the support panel 212 (e.g., via the drawer support shelf 248). Further, the storage drawer 142 can be slidably housed on the slide bracket 270. For example, the storage drawer 142 can be slidably housed beneath the drawer support shelf 248. The weight sensor 210 can be mounted above the storage drawer 142. Advantageously, the weight sensor 210 can detect mass loads on multiple different shelves 224 (e.g., proximate to opposite panel sides) and held by the slide bracket 270 (e.g., at the drawer support shelf 248).

[0065] Generally returning to Figures 2 to 14 In certain embodiments, the image module 160 and the controller 150 are configured to capture one or more two-dimensional images. Optionally, multiple sequential two-dimensional images can be captured as part of an image capture sequence (e.g., in a predetermined or pattern). The sequential images (e.g., a previously captured image and a recently captured image) can be recorded (e.g., temporarily) at the controller 150 and compared. Through the comparison, changes or differences between the sequential images can be detected. Optionally, the image capture sequence can be stopped or paused in accordance with one or more end conditions, such as expiration of a predetermined time period, failure to detect further changes in the sequential images, or closing of the door 128.

[0066] Independent of or in addition to the captured images, the weight sensor 210 and the controller 150 can be configured to detect object mass or weight on the shelves 224 or the drawer 142 of the shelving assembly 200 (e.g., in accordance with a predetermined schedule or a serial image capture sequence). Such detection can generate a captured mass load.

[0067] In accordance with the captured images and one or more mass loads, the controller 150 can automatically attempt to identify items (e.g., stored items, such as food; or non-stored items, such as user belongings, shelves, movable drawers, etc.) within the field of view of the image module 160. As appreciated, identifying such items can be performed through edge matching, template matching, grayscale matching, receptive field response histograms, or another suitable routine (e.g., performed at the controller 150 based on one or more captured images from the image module 160). The identification can include or attempt to estimate an identity (e.g., identify what type of food and object) or quantity (e.g., different unit quantity, volume, or mass) of the stored items.

[0068] This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and can include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims

1. A refrigerator comprising: a cabinet defining a refrigerated compartment; a door rotatably hinged to the cabinet for selective access to the refrigerated compartment; and a shelf assembly disposed within the refrigerated compartment, the shelf assembly comprising: a mounting bracket attached to the cabinet and secured to a rear wall of the cabinet; a shelf attached to the mounting bracket, and a weight sensor disposed within the cabinet in cantilevered engagement with the shelf for detecting mass stored at the shelf; wherein the shelf assembly further comprises a barbed rear rail disposed rearwardly from the mounting bracket, the weight sensor retained to a sensor housing between the barbed rear rail and the mounting bracket, the weight sensor disposed rearwardly of the mounting bracket, the sensor housing comprising one or more contact teeth selectively engageable with one or more barbs of the barbed rear rail for retaining the sensor housing at a variable height. the shelf is a first shelf, and the shelf assembly further comprises a second shelf attached to the mounting bracket and spaced apart from the first shelf.

2. The refrigerator according to claim 1, characterized in that, the mounting bracket defines a plurality of different heights at which the shelf is selectively attachable, and the shelf assembly further comprises a sensor housing retaining the weight sensor, the sensor housing selectively movable along the mounting bracket between the plurality of different heights.

3. The refrigerator according to claim 1, characterized in that, the shelf comprises a horizontal platform and a cantilevered bracket extending rearwardly from the horizontal platform, the cantilevered bracket selectively retained to the mounting bracket and comprising an engagement tab disposed against the weight sensor.

4. The refrigerator according to claim 1, characterized in that, the shelf assembly further comprises 5. The refrigerator according to claim 1, characterized in that, a support panel attached to the rear wall of the cabinet, the shelf retained to the support panel, and the weight sensor sandwiched between and in cantilevered engagement with the cabinet and the support panel. the shelf assembly further comprises 6. The refrigerator according to claim 5, characterized in that, a slide bracket mounted to the support panel, and a storage drawer slidably received to the slide bracket.

7. A refrigerator comprising: a cabinet defining a refrigerated compartment; a door rotatably hinged to the cabinet for selective access to the refrigerated compartment; and a shelf assembly disposed within the refrigerated compartment, the shelf assembly comprising: a mounting bracket attached to the cabinet and secured to a rear wall of the cabinet; a shelf attached to the mounting bracket, a sensor housing disposed within the refrigerated compartment and movable relative to the mounting bracket, and a weight sensor disposed within the sensor housing in cantilevered engagement with the shelf for detecting mass stored at the shelf. ​ a weight sensor secured to the sensor housing in cantilevered engagement with the shelf to detect mass stored at the shelf; wherein the shelf assembly further comprises a barbed rear rail disposed rearwardly from the mounting bracket, the weight sensor is retained to the sensor housing between the barbed rear rail and the mounting bracket, the weight sensor is disposed rearwardly of the mounting bracket, the sensor housing comprises one or more contact teeth selectively engageable with one or more barbs of the barbed rear rail for retaining the sensor housing at a variable height.

8. The refrigerator according to claim 7, characterized in that, The shelf is a first shelf, and the shelf assembly further comprises a second shelf attached to the mounting bracket and spaced apart from the first shelf.

9. The refrigerator according to claim 7, characterized in that, The mounting bracket defines a plurality of different heights at which the shelf is selectively attachable, and the sensor housing is movable along the mounting bracket between the plurality of different heights.

10. The refrigerator according to claim 7, characterized in that, The shelf comprises a horizontal platform and a cantilevered bracket extending rearwardly from the horizontal platform, the cantilevered bracket is selectively retained on the mounting bracket and comprises an engagement tab disposed against the weight sensor.

11. The refrigerator according to claim 7, characterized in that, The shelf assembly further comprises a support panel attached to a rear wall of the cabinet, the shelf is retained on the support panel, and the weight sensor is sandwiched between and in cantilevered engagement with the cabinet and the support panel.

12. The refrigerator according to claim 11, characterized in that, The shelf assembly further comprises a slide bracket mounted to the support panel, and a storage drawer slidably received on the slide bracket. The shelf assembly further comprises

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