Sensing assembly, refrigerator

Abstract

This application relates to the field of household appliance technology and discloses a sensing component. The sensing component includes a sensing module, an antenna system, and a connecting harness. The sensing module includes a human sensing unit and a wireless communication unit. The antenna system is connected to the sensing module, and the frequency band of the antenna system includes 2.4 GHz corresponding to the wireless communication unit and 24 GHz corresponding to the human sensing unit. The connecting harness includes a signal line and a power line, and a first end of the connecting harness is connected to the sensing module. The first segment of the connecting harness near the first end is constrained to a straight line. This application also discloses a refrigerator.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, such as a sensing component and a refrigerator. Background Technology

[0002] Some smart home appliances incorporate both Wi-Fi and motion sensor modules to enhance the functionality of refrigerators. However, both Wi-Fi and motion sensor modules are separate components, making assembly cumbersome and costly.

[0003] To reduce the cost of simultaneously installing Wi-Fi and human body sensing modules in home appliances, a smart device combining Wi-Fi and microwave is disclosed in related technologies. The device includes a main control chip, a microwave human body sensing detector, and a wireless Wi-Fi communication module. The microwave human body sensing detector and the wireless Wi-Fi communication module are respectively connected to the main control chip. Specifically, the built-in program of the main control chip uses a special algorithm developed during the development phase to extract Wi-Fi waveforms and frequency characteristic values. Data with Wi-Fi characteristic value compliance exceeding a preset value is filtered out from the microwave waveform, thereby correctly identifying whether it is human body sensing or Wi-Fi interference.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Although the sensing components in related technologies have achieved the integrated arrangement of Wi-Fi modules and human body induction detectors, the power signal of the power harness may interfere with high-frequency signals, and the signal harness and high-frequency signals may interfere with each other. The anti-interference capability of the sensing components needs to be further improved.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a sensing component and a refrigerator to improve the anti-interference capability of the sensing component.

[0009] In some embodiments, the sensing component includes a sensing module, an antenna system, and a connecting harness. The sensing module includes a human sensing unit and a wireless communication unit. The antenna system is connected to the sensing module, and the frequency band of the antenna system includes 2.4 GHz corresponding to the wireless communication unit and 24 GHz corresponding to the human sensing unit. The connecting harness includes a signal line and a power line, and a first end of the connecting harness is connected to the sensing module. A first segment of the connecting harness near the first end is constrained to a straight line.

[0010] In some embodiments, the length of the first segment of the connecting harness is greater than or equal to 6 centimeters.

[0011] In some embodiments, the connecting harness and the second segment adjacent to the first segment are constrained into a loop.

[0012] In some embodiments, the human sensing unit and the wireless communication unit share a PCB substrate.

[0013] In some embodiments, the antenna system includes a radiating element connected to the PCB substrate, the human sensing unit and the wireless communication unit share the radiating element, and the antenna system coordinates communication and sensing functions through a time-division multiplexing mechanism.

[0014] In some embodiments, the PCB substrate is provided with a power management unit, which is connected to the power line and simultaneously supplies power to the human sensing unit and the wireless communication unit.

[0015] In some embodiments, the wireless communication unit includes a processor for processing wireless signals and human body sensing signals.

[0016] In some embodiments, the refrigerator includes a cabinet, a door, and the aforementioned sensing component, wherein the cabinet has a refrigeration space with an opening at the front; the door is closable and disposed in the cabinet, with its side end recessed inward to form an accommodating space; and the sensing component is disposed in the accommodating space.

[0017] In some embodiments, the human sensing unit includes a sensing matrix facing outwards from the door.

[0018] In some embodiments, the radiating element of the antenna system faces the side of the door that faces outward.

[0019] In some embodiments, the refrigerator further includes a cover that covers the top of the accommodating space, the cover having a circumferentially downwardly extending baffle for preventing air from directly contacting the sensing component.

[0020] In some embodiments, the refrigerator further includes a wire clamp assembly disposed in the receiving space, wherein a first segment of the connecting wire harness of the sensing component is constrained into a straight line by the wire clamp assembly.

[0021] The sensing component and refrigerator provided in this disclosure can achieve the following technical effects:

[0022] By rationally allocating frequency bands and optimizing the wiring harness structure, signal interference can be effectively reduced, enabling accurate and stable transmission of human body sensing signals and wireless communication signals. The linear wiring harness constraint facilitates neat wiring inside household appliances, reduces wiring tangles and mess, and simplifies assembly. It also helps improve the overall stability of the sensing component structure, indirectly enhancing anti-interference capabilities. While improving anti-interference capabilities, it reduces component complexity and cost, offering a cost advantage compared to independently setting up Wi-Fi modules and human body sensing modules.

[0023] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0025] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this disclosure;

[0026] Figure 2 This is a schematic diagram of the structure of a refrigerator door provided in an embodiment of this disclosure;

[0027] Figure 3 This is an exploded view of a refrigerator door provided in an embodiment of this disclosure;

[0028] Figure 4 yes Figure 3 Enlarged diagram of section A in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the refrigerator cover provided in an embodiment of this disclosure;

[0030] Figure 6 This is a schematic diagram of the structure of the refrigerator components that form the accommodating space according to an embodiment of the present disclosure;

[0031] Figure 7 This is a cross-sectional schematic diagram of the refrigerator in the storage space provided in the embodiment of this disclosure;

[0032] Figure 8This is a schematic diagram of the structure of the sensing module of the refrigerator provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 100: Housing; 200: Door; 201: Accommodation space; 210: Top surface; 220: Left end surface; 300: Sensing component; 301: Sensing module; 310: Human sensing unit; 311: Sensing matrix; 320: Wireless communication unit; 330: Antenna system; 331: Radiation unit; 340: PCB substrate; 350: Connecting harness; 360: Power management unit; 370: Processor; 400: Cover plate; 410: Edge; 420: Airflow channel; 430: Step; 440: Snap-fit ​​part; 450: Snap-fit ​​mating part; 460: Drain hole; 470: Mounting bracket; 480: Wire clamp assembly. Detailed Implementation

[0035] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0036] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0037] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0039] Unless otherwise stated, the term "multiple" means two or more.

[0040] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0041] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0043] Some smart home appliances incorporate both Wi-Fi and motion sensor modules to enhance the functionality of refrigerators. However, both Wi-Fi and motion sensor modules are separate components, making assembly cumbersome and costly.

[0044] To reduce the cost of simultaneously installing Wi-Fi and human body sensing modules in home appliances, a smart device combining Wi-Fi and microwave technology is disclosed in related technologies. This device includes a main control chip, a microwave human body sensor, and a wireless Wi-Fi communication module, each connected to the main control chip. Specifically, the main control chip's built-in program uses a special algorithm developed during the development phase to extract Wi-Fi waveforms and frequency characteristic values. Data with Wi-Fi characteristic value compliance exceeding a preset value is filtered out from the microwave waveform, thus correctly identifying whether it is human body sensing or Wi-Fi interference. The problem with this related technology is that although the sensing component integrates the Wi-Fi module and the human body sensor, the power signal from the power harness may interfere with high-frequency signals, and the signal harness and high-frequency signals may interfere with each other. Therefore, the anti-interference capability of the sensing component needs further improvement.

[0045] To improve the anti-interference capability of the sensing components, combined with Figure 1-8As shown, this embodiment of the present disclosure provides a sensing component 300, which includes a sensing module 301, an antenna system 330, and a connecting harness 350. The sensing module 301 includes a human sensing unit 310 and a wireless communication unit 320. The antenna system 330 is connected to the sensing module 301, and the frequency bands of the antenna system 330 include 2.4 GHz corresponding to the wireless communication unit 320 and 24 GHz corresponding to the human sensing unit 310. The connecting harness 350 includes a signal line and a power line. The first end of the connecting harness 350 is connected to the sensing module 301, and the first segment of the connecting harness 350 near the first end is constrained to a straight line.

[0046] The power signal from the power harness may cause electromagnetic interference to high-frequency signals (such as 2.4GHz and 24GHz); the signal harness and the high-frequency signal may interfere with each other due to electromagnetic coupling. Interference can lead to misinterpretation of human body sensing data, unstable wireless communication signal transmission, and affect the accuracy and reliability of smart device functions.

[0047] The antenna system 330 includes a 2.4 GHz band corresponding to the wireless communication unit and a 24 GHz band corresponding to the human sensing unit. The 2.4 GHz and 24 GHz bands are significantly spaced apart and have a significant frequency difference, which can effectively reduce the probability of mutual interference between wireless communication signals and human sensing signals, and reduce co-channel or adjacent-channel interference.

[0048] The connecting harness 350 includes signal lines and power lines. The signal lines are used to transmit signals such as human body sensing data and wireless communication data, while the power lines are used to supply power to the sensing module 301.

[0049] The first segment of the connecting harness 350 near its first end (i.e., the end connecting to the sensing module 301) is constrained to a straight line. A straight harness allows for a more regular signal path during transmission, reducing signal reflection and scattering caused by harness bending and tangling, thereby reducing signal distortion and interference. The straight structure is more stable in an electromagnetic environment, effectively suppressing electromagnetic interference generated by the harness itself as a radiation source; simultaneously, the straight harness is less affected by external electromagnetic interference, improving the anti-interference capability of signal and power lines. The straight arrangement reduces electromagnetic coupling between signal and power lines, preventing power signals from interfering with signal transmission through coupling.

[0050] Radar modules typically process high-frequency signals, and cable bends can cause signal reflection, attenuation, or distortion. Sharp-angle bends alter the cable's characteristic impedance, affecting radar detection accuracy and distance calculation. For example, a phase shift may occur at a bend, leading to incorrect target localization. Bending cables increases stress on internal conductors, potentially causing conductor breakage, insulation damage, or shielding failure. This can result in short circuits, open circuits, or electromagnetic interference (EMI), shortening cable life and causing malfunctions. Furthermore, the thermal effects of high-frequency signals are more pronounced in bent areas, potentially creating localized hotspots and affecting overall module heat dissipation. In radar system design, cabling specifications typically require cables to be kept straight or bend with a large radius (at least 10 times the cable diameter). This ensures signal transmission stability and reduces insertion and return losses. Bending can also introduce additional capacitance or inductance, interfering with the phase consistency of the radar signal.

[0051] The sensing component provided in this disclosure effectively reduces various types of interference through reasonable frequency band allocation and optimized wiring structure, ensuring accurate and stable transmission of human body sensing signals and wireless communication signals. The linear wiring harness constraint facilitates neat wiring within the smart device, reducing wiring tangles and assembly complexity, while also improving the overall structural stability of the sensing component and indirectly enhancing its anti-interference capability. While improving anti-interference capability, it does not significantly increase component complexity or cost, offering a cost advantage compared to independently setting up Wi-Fi and human body sensing modules.

[0052] Optionally, the length of the first segment of the connecting harness 350 is greater than or equal to 6 cm.

[0053] The wavelengths of 2.4GHz and 24GHz signals are approximately 12.5 cm and 1.25 cm, respectively, and are sensitive to the geometry of the transmission path. When the length of the first segment of the harness is greater than or equal to 6 cm, standing waves can be avoided due to the harness length being an integer multiple of the wavelength, thereby reducing interference caused by signal reflection and superposition; a longer straight segment can reduce the probability of near-field coupling between the harness and surrounding metal components or other harnesses.

[0054] The frequency difference between low-frequency power signals (such as DC 5V) and high-frequency signals transmitted via power lines is significant. Straight segments ≥6 cm can enhance the physical distance between the two through spatial isolation, reducing conducted and radiated coupling. Conducted coupling occurs when power line noise is coupled to signal lines due to parasitic inductance and capacitance effects. Radiated coupling occurs when the radiated field strength of a long, straight power line attenuates more rapidly with distance, thus reducing radiated interference to antenna systems (especially 24GHz microwave antennas).

[0055] Designing the first segment of the wiring harness to be 6 cm or longer effectively solves the interference problem between high-frequency signals and power / signal harnesses through the application of transmission line theory and spatial isolation strategies. Furthermore, it achieves a balance between performance, cost, and space in engineering practice. This threshold can serve as a fundamental parameter for the anti-interference design of smart home appliance sensing components. Combined with auxiliary measures such as shielding and grounding, it can further improve the electromagnetic compatibility of the system.

[0056] Optionally, the second segment of the connecting harness 350 adjacent to the first end is constrained into a loop.

[0057] The sensing module 301 (including the human sensing unit 310 and the wireless communication unit 320) is itself a high-frequency signal transmitter / receiver (2.4GHz, 24GHz), and its power supply pins and signal interfaces may become internal interference coupling points (such as module power supply ripple and digital circuit noise conducted through the wiring harness). Placing the ring-shaped constraint in the second segment, close to the first segment, can directly block the following interference paths. The ring-shaped portion can also suppress high-frequency noise (such as switching power supply ripple) from the power supply pins of the sensing module 301 from radiating outward through the power wiring harness. The ring-shaped portion can also reduce near-field coupling between the antenna feed line of the wireless communication unit 320 and the signal wiring harness.

[0058] By constraining the connecting harness 350 and the second segment adjacent to the first end into a loop, and through local near-field interference suppression and cascaded filtering architecture, this design more effectively blocks high-frequency noise and coupling interference generated inside the sensing module 301 compared to the traditional loop design of the terminal (second end). This design is particularly suitable for smart home appliance scenarios with high RF integration and compact internal space. Combined with the transmission line optimization of the first straight segment, an anti-interference link from "source-end suppression → path attenuation" can be constructed, improving the electromagnetic compatibility (EMC) and signal transmission reliability of the sensing components.

[0059] Optionally, the human sensing unit 310 and the wireless communication unit 320 share a PCB substrate.

[0060] In traditional designs, the human sensing unit 310 and the wireless communication unit 320 are independent modules that need to be connected to the motherboard via ribbon cables. The length of these ribbon cables can lead to transmission line effects. By sharing a PCB substrate, internal signals are transmitted through on-board traces, shortening the path and reducing the impact of parasitic parameters.

[0061] In traditional solutions, the Wi-Fi module and the human body sensing module are designed independently, requiring two separate PCB substrates, peripheral circuits, and packaging structures. Sharing a substrate reduces the number of components, lowers the bill of materials (BOM) cost, and reduces the size of the sensing module 301. A single substrate replaces multiple module combinations, reducing soldering, debugging, and assembly steps, improving production efficiency, and lowering labor costs.

[0062] Furthermore, this also reduces the size of the sensing module 301. The traditional split solution has a total size of ≥100mm×60mm×25mm, while the solution using a shared PCB substrate can reduce the size of the sensing module 301 to 48mm×28mm×11mm.

[0063] Optionally, the antenna system 330 includes a radiating element 331 connected to a PCB substrate. The human sensing unit 310 and the wireless communication unit 320 share the radiating element 331. The antenna system 330 coordinates communication and sensing functions through a time-division multiplexing mechanism.

[0064] In traditional solutions, the Wi-Fi module (2.4GHz) and the microwave human body sensing module (24GHz) require independent antennas (such as the PCB inverted F antenna for Wi-Fi and the microstrip patch antenna for microwave). The shared radiating element 331 can cover both the 2.4GHz and 24GHz frequency bands simultaneously through a wideband antenna design (such as a dual-band common aperture antenna), reducing the number of antennas by more than 50%, reducing the substrate area and the cost of RF components (such as connectors and feeders).

[0065] The timing control circuit of the main control chip switches the radiation unit 331 to the wireless communication unit 320 or the human sensing unit 310 in different time slices to avoid radio frequency interference caused by the simultaneous operation of the two units.

[0066] Optionally, the PCB substrate is provided with a power management unit 360, which is connected to a power line and simultaneously powers the human sensing unit 310 and the wireless communication unit 320.

[0067] The design of the integrated power management unit 360 on the PCB substrate simplifies the structure of the sensing module 301 by unifying the power supply structure, reducing the number of power supply harnesses and mitigating the interference of current in the power supply harnesses on the signal.

[0068] Optionally, the wireless communication unit 320 includes a processor 370 for processing wireless signals and human body sensing signals.

[0069] The design of sharing the processor 370 with the wireless communication unit 320 and the human body sensing unit reduces system cost and complexity through hardware resource integration.

[0070] This disclosure provides a refrigerator, which includes a cabinet 100, a door 200, and the aforementioned sensing module 301. The cabinet 100 has a refrigeration space with an opening at the front. The door 200 is closable and is disposed on the cabinet 100. The side end of the door 200 is recessed inward to form a receiving space 201. The sensing module 301 is disposed in the receiving space 201.

[0071] In this embodiment of the disclosure, the refrigerator includes a cabinet 100 and doors. The refrigerator can be a single-door refrigerator or a multi-door refrigerator. When the refrigerator is a multi-door refrigerator, the storage space 201 is located in one or more of the doors.

[0072] The side of the door 200 facing the user is the outer side, and the side facing the refrigerated space is the rear side. The door 200 also includes four side end faces located in the four directions: top end face 210, bottom end face, left end face 220, and right end face. A side end face of the door 200 refers to one of the aforementioned four side end faces. When the side end face is recessed inward, it forms an externally open receiving space 201. Taking the receiving space 201 located on the top end face 210 as an example, the top opening of the receiving space 201...

[0073] The refrigerator provided in this embodiment has an opening in the accommodating space 201 located on the side end face of the refrigerator door, which facilitates the assembly of the sensing component. Furthermore, the sensing component 300 is disposed on the door body 200, making it less likely to obstruct the signal.

[0074] Optionally, the refrigerator also includes a cover 400 that covers the top of the receiving space 201. The cover 400 is provided with a circumferentially downwardly extending flange 410 for preventing air from directly contacting the sensing component 201.

[0075] The refrigerator also includes a cover 400 that closes to the opening of the receiving space 201, thus creating a relatively enclosed space inside the receiving space 201. The cover 400 has a circumferential flange 410. The flange 410 extends from the cover 400 into the receiving space 201, and when the receiving space 201 is formed at the top surface 210, the flange 410 extends downwards from the downward-facing side of the cover 400. There is a certain distance between the flange 410 and the side wall of the receiving space 201, thus forming a channel that allows airflow. Air from the refrigerator's environment enters the receiving space 201 through the gap between the cover 400 and the door 200 and flows through the airflow channel 420. The flange 410 prevents direct contact between the air and the sensing components, reducing the risk of condensation forming on the surface of the sensing components. When air flows through the airflow channel 420, it comes into contact with the sidewalls of the baffle 410 and the receiving space 201. Even if condensation forms, it will flow downwards along the outer surface of the baffle 410 or the inner wall of the receiving space 201, making it less likely to drip onto the sensing component. In addition, when the sensing component is at a high temperature, the cool air flowing in or out of the airflow channel 420 generates thermal convection, which can dissipate heat from the sensing component.

[0076] The refrigerator provided in this embodiment has an airflow channel 420 formed by the edge 410 of the cover 400 and the side wall of the accommodating space 201. This can reduce or avoid the formation of condensation on the surface of the sensing component, and the condensation formed in the airflow channel 420 is less likely to drip onto the sensing component when it falls, thus reducing or avoiding the risk of water damage to the sensing component. In addition, the airflow channel 420 serves as a channel for heat exchange between the accommodating space 201 and the outside world, which can improve the heat dissipation effect on the sensing component.

[0077] Optionally, the periphery of the opening of the accommodating space 201 is provided with a step 430, and at least a portion of the periphery of the cover plate 400 overlaps the step 430.

[0078] The periphery of the opening of the accommodating space 201 is recessed to form a step 430, and the edge of the cover plate 400 overlaps with the step 430. The retaining flange 410 is located on the inner side of the edge of the cover plate 400. This arrangement facilitates the positioning and installation of the cover plate 400. In addition, the step 430 at the edge of the opening can reduce the height of the cover plate 400 protruding from the side end face.

[0079] Optionally, the top surface of the cover plate 400 is flush with the side end face of the structure receiving space 201.

[0080] This design improves the aesthetics of the door 200.

[0081] Optionally, the cover plate 400 extends into the receiving space and is provided with a snap-fit ​​part 440, and the inner wall of the receiving space 201 is provided with a snap-fit ​​mating part 450. One of the snap-fit ​​part 440 and the snap-fit ​​mating part 450 is a hook and the other is a block, and the hook and the block are snapped together.

[0082] The latching portion 440 of the cover plate 400 extends into the receiving space 201. In some cases, a portion of the flange 410 serves as the latching portion 440. In other cases, the latching portion 440 is located outside the flange 410. When the cover plate 400 is closed onto the receiving space 201, the latching portion 440 of the cover plate 400 engages with the latching mating portion 450 of the inner wall of the receiving space 201, thereby allowing the cover plate 400 to be latched onto the opening of the receiving space 201. With this arrangement, the cover plate 400 can be fixed or pre-fixed.

[0083] Optionally, the top surface 210 of the door 200 is recessed downward to form a receiving space 201; and / or, a drainage hole 460 is provided at the bottom of the receiving space 201.

[0084] The top surface 210 of the door 200 is recessed downwards to form a receiving space 201. The receiving space 201 and the cover plate 400 are located in a position that is not easily noticed by the user, which can further improve the aesthetics of the door 200. In addition, the sensing component located in the receiving space 201 is not easily obstructed, which can improve the clarity of the sensing component's signal transmission and reception when the sensing component has recognition or communication functions.

[0085] A drain hole 460 is provided at the bottom of the receiving space 201, so that condensate formed in the receiving space 201 can be discharged smoothly. This arrangement can further reduce the risk of water ingress into the sensing components.

[0086] Optionally, the refrigerator also includes a mounting bracket 470 disposed in the receiving space 201, and the sensing component is mounted on the mounting bracket 470; wherein the mounting bracket 470 and the components forming the receiving space 201 are an integral structure.

[0087] The mounting bracket 470 is used to fix the sensing component. The mounting bracket 470 allows the sensing component to be fixed in a preset position, reducing or preventing water ingress or malfunction due to displacement of the sensing component. The mounting bracket 470 and the component forming the receiving space 201 are integrated into a single structure, reducing the number of independent components and lowering the cost of the refrigerator.

[0088] Optionally, the door body 200 includes a top frame, a bottom frame, a left side frame, and a right side frame. The top frame, bottom frame, left side frame, and right side frame are connected end to end to form a frame. The door body 200 also includes a front panel, which is disposed on the front side of the frame.

[0089] This design facilitates the production and assembly of the door body 200.

[0090] Optionally, the top frame is made of plastic, and the upward-facing side of the top frame has a receiving space 201.

[0091] On the one hand, the plastic top frame can reduce signal obstruction; on the other hand, the plastic top frame facilitates injection molding to form the receiving cavity and mounting bracket 470. Furthermore, the plastic top frame has poor thermal conductivity, which can reduce condensation formed inside the receiving space 201 by hot and humid air.

[0092] Optionally, the left and right frames can be made of metal.

[0093] This improves the structural strength of the door 200, and the outward-facing surfaces of the left and right frames are visible to the user, thus enhancing the aesthetics of the door 200.

[0094] Optionally, the bottom frame can be made of metal.

[0095] This can further enhance the structural strength of the door 200 and improve the aesthetics of the refrigerator.

[0096] Optionally, the refrigerator also includes a drain pipe for directing condensate from the drain hole 460 to the outside of the door 200.

[0097] This prevents condensation from accumulating inside the door 200.

[0098] Optionally, the human sensing unit 310 includes a sensing matrix 311, which faces outward from the door 200.

[0099] For example, the sensing matrix 311 includes a multi-element microwave antenna array. Orienting the sensing matrix 311 towards the outside of the refrigerator door 200 allows direct coverage of the user's operating area (such as the range of hand movement when opening the door and the user's standing position), effectively detecting approach and door-opening behaviors. The sensing matrix 311 faces away from the refrigerator's interior space, reducing the impact of interference sources such as changes in food placement and internal fan operation on the sensing signal. The area outside the door 200 is typically an open environment, with the main reflective surfaces being the ground and walls, resulting in a simple signal reflection path and facilitating the extraction of effective human echoes using multipath signal separation algorithms.

[0100] Optionally, the radiating element 331 of the antenna system 330 faces outward from the door 200.

[0101] The radiation unit 331 faces the outside of the refrigerator door 200, directly targeting the user's daily operating area. The beam of the 24GHz microwave radiation unit 331 can cover the range of the user's movements, such as standing, waving, and approaching, effectively capturing human motion. The radiation unit 331 is positioned away from strong reflective surfaces such as metal shelves and cooling components inside the refrigerator, reducing interference from reflected waves on the sensing signal.

[0102] Optionally, the refrigerator also includes a wire clamp assembly 480 disposed in the receiving space 201, wherein the first segment of the connecting wire harness 350 of the sensing component is constrained into a straight line by the wire clamp assembly 480.

[0103] The wire clamp assembly 480 is used to secure the wire harness and constrain the connecting wire harness 350 into a preset shape. Exemplarily, the connecting wire harness 350 includes signal lines and power lines. To prevent the current from the power line from interfering with the weak signal of the signal line, it is usually necessary to route the wires separately or take isolation measures. The refrigerator provided in this disclosure, by constraining the shape of the connecting wire harness 350 with the wire clamp assembly 480, can reduce the interference caused by the current from the power line to the signal line by arranging the wire harness into a preset shape. The signal lines and power lines of the connecting wire harness 350 can be bundled together for routing. This makes it easier to assemble the sensing components of the refrigerator.

[0104] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A perception component, comprising: include: The sensing module includes a human sensing unit and a wireless communication unit; An antenna system is connected to the sensing module, and the frequency band of the antenna system includes 2.4 GHz for the corresponding wireless communication unit and 24 GHz for the corresponding human sensing unit; The connecting harness includes signal lines and power lines. The first end of the connecting harness is connected to the sensing module, and the first segment of the connecting harness near the first end is constrained to be straight.

2. The sensing component according to claim 1, characterized in that, The length of the first segment of the connecting harness is greater than or equal to 6 centimeters.

3. The sensing component according to claim 1, characterized in that, The connecting harness and the second segment adjacent to the first segment are constrained into a loop.

4. The sensing component according to any one of claims 1 to 3, characterized in that, The human sensing unit and the wireless communication unit share a PCB substrate.

5. The sensing component according to claim 4, characterized in that, The antenna system includes a radiating element connected to the PCB substrate. The human sensing unit and the wireless communication unit share the radiating element. The antenna system coordinates communication and sensing functions through a time-division multiplexing mechanism.

6. The sensing component according to claim 5, characterized in that, The PCB substrate is provided with a power management unit, which is connected to the power line and simultaneously supplies power to the human sensing unit and the wireless communication unit; and / or, The wireless communication unit includes a processor for processing wireless signals and human body sensing signals.

7. A refrigerator characterized by comprising: include: The box has a refrigerated space with an opening at the front. A door is provided in the box body that can be opened and closed, and the side end of the door is recessed inward to form an accommodating space; and, The sensing component according to any one of claims 1 to 6 is disposed in the receiving space.

8. The refrigerator according to claim 7, characterized in that, The human-sensing unit includes a sensing matrix facing outwards from the door; and / or, The radiating element of the antenna system faces outward from the door.

9. The refrigerator according to claim 7, characterized in that, Also includes: A cover plate is fitted over the top of the receiving space, and a circumferentially downwardly extending flange is provided on the cover plate to prevent air from directly contacting the sensing component.

10. The refrigerator according to claim 7, characterized in that, Also includes A clamp assembly is disposed in the receiving space, wherein the first segment of the connecting wire harness of the sensing component is constrained into a straight line by the clamp assembly.

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