Refrigerator

Abstract

The utility model provides a refrigerator which comprises a refrigerator body, a spring vibration sensor and a processing unit, and the spring vibration sensor is arranged on the refrigerator body and used for detecting vibration generated by the refrigerator body when the refrigerator runs; the processing unit is connected with the vibration sensor and used for obtaining vibration parameters of the box body. According to the refrigerator, the vibration of the refrigerator body is detected through the spring vibration sensor, so that the noise value can be calculated based on the vibration parameters, noise detection of the refrigerator is achieved, compared with a sound sensor and the spring vibration sensor adopted in the prior art, the price is low, the structure is simple, the sensor cost can be reduced, and the cost advantage of the refrigerator is improved; and stable operation of the refrigerator is realized.

Description

Technical Field

[0001] This application belongs to the field of refrigerator technology, and in particular relates to a refrigerator. Background Technology

[0002] When a refrigerator is working, the internal components such as the compressor and fan generate noise. Noise detection is a crucial part of refrigerator operation; for example, fault diagnosis and noise reduction control both rely on accurate noise detection for proper execution. However, the sound sensors currently used in refrigerators suffer from complex structures and high costs. Utility Model Content

[0003] This application provides a refrigerator that solves the technical problem of complex and costly sound sensor structures used in refrigerators.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A refrigerator, comprising:

[0006] Box;

[0007] A spring vibration sensor is installed on the cabinet to detect the vibration generated by the cabinet when the refrigerator is running;

[0008] The processing unit is connected to the spring vibration sensor and is used to acquire the vibration parameters of the housing.

[0009] In some embodiments, the spring vibration sensor includes a spring and a charging and discharging circuit. The input terminal of the charging and discharging circuit is adapted to be connected to a power source. One end of the spring is connected to the output terminal of the charging and discharging circuit, and the other end is grounded. The charging and discharging circuit is used to charge the spring.

[0010] The processing unit is connected to the charging and discharging circuit and is used to collect the charging and discharging time of the spring.

[0011] In some embodiments, the spring is a rectangular spring.

[0012] In some embodiments, the spring includes a spring body and a first pin and a second pin connected to both ends of the spring body. The first pin and the second pin both extend in a first direction, which is parallel to the extension and retraction direction of the spring body.

[0013] In some embodiments, the height of the spring body in the extension direction is between 10 cm and 12 cm, and the length in the circumferential direction is 17 ± 0.2 cm and the width is 8 ± 0.2 cm.

[0014] In some embodiments, the refrigerator further includes a display device connected to the processing unit for displaying the current noise level of the refrigerator.

[0015] In some embodiments, the refrigerator further includes a communication module connected to the processing unit and used to connect to a backend server.

[0016] In some embodiments, the refrigerator further includes a compressor, the housing having a compressor chamber, and the compressor being disposed in the compressor chamber;

[0017] The spring vibration sensor is mounted on the press chamber.

[0018] In some embodiments, the housing includes a back panel and a bottom panel, the compressor is fixedly mounted on the bottom panel, and the spring vibration sensor is disposed on the back panel.

[0019] In some embodiments, the housing further includes a compressor back plate, the bottom of which has a mounting port. The compressor is installed into the compressor chamber through the mounting port. The compressor back plate is detachably mounted on the mounting port on the back plate to close the mounting port.

[0020] The spring vibration sensor is positioned at a predetermined distance above the press back plate.

[0021] The refrigerator provided in this application uses a spring vibration sensor to detect the vibration of the cabinet, thereby calculating the noise value based on the vibration parameters and realizing the noise detection of the refrigerator. Compared with the sound sensor used in the prior art, the spring vibration sensor is cheaper and simpler in structure. It can reduce the cost of the sensor while meeting the accuracy of noise detection, improve the cost advantage of the refrigerator, and ensure the correctness of the subsequent intelligent control of the refrigerator based on the noise detection results, so as to realize the stable operation of the refrigerator. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the structure of the vibration sensor provided in an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of another structure of the refrigerator provided in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of another structure of the refrigerator provided in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the vibration sensor installed in the housing according to an embodiment of this application. Detailed Implementation

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0030] This application provides a refrigerator as an example; please refer to [link to example]. Figure 1 , Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application. The refrigerator 100 includes a cabinet 110, a spring vibration sensor 120, and a processing unit 130.

[0031] The spring vibration sensor 120 is installed on the cabinet 110 to detect the vibration generated by the cabinet 110 when the refrigerator 100 is running; the processing unit 130 is connected to the spring vibration sensor 120 to obtain the vibration parameters of the cabinet 110.

[0032] It should be noted that the vibration and noise generated by the cabinet 110 are positively correlated; that is, the greater the vibration, the greater the noise, and the smaller the vibration, the smaller the noise. The processing unit 130 is also used to calculate the noise value of the refrigerator 100 based on the vibration parameters.

[0033] The refrigerator 100 provided in this application embodiment uses a spring vibration sensor 120 to detect the vibration of the cabinet, thereby calculating the noise value based on the vibration parameters and realizing the noise detection of the refrigerator 100. Compared with the sound sensor used in the prior art, the spring vibration sensor is cheaper and simpler in structure. It can reduce the sensor cost while meeting the accuracy of noise detection, improve the cost advantage of the refrigerator, and ensure the correctness of the subsequent intelligent control of the refrigerator based on the noise detection results, so as to realize the stable operation of the refrigerator 100.

[0034] For example, please refer to Figure 2 , Figure 2This is a schematic diagram of the structure of the spring vibration sensor provided in the embodiment of this application. The spring vibration sensor 120 includes a charging and discharging circuit 121 and a spring 122. The input terminal of the charging and discharging circuit 121 is adapted to be connected to a power source. One end of the spring 122 is connected to the output terminal of the charging and discharging circuit 121, and the other end is grounded. The charging and discharging circuit 121 is used to charge the spring 122. The processing unit 130 is connected to the charging and discharging circuit 121 and is used to collect the charging and discharging time of the spring 122.

[0035] It should be noted that the processing unit 130 obtains vibration parameters by collecting the charging and discharging duration of the spring 122. The charging and discharging circuit 121 continuously charges and discharges the spring 122. The spring 122 acts as a capacitor, with two terminals, the positive terminal of which is electrically connected to the output terminal of the charging and discharging circuit 121, and the negative terminal grounded. Furthermore, as a parallel-plate capacitor, the capacitance of the spring 122 is related to the distance between its two plates. According to the capacitance formula of a parallel-plate capacitor, the capacitance of the spring 122 is inversely proportional to the distance between its two plates; that is, when the distance between the two plates increases, the capacitance decreases; conversely, when the distance decreases, the capacitance increases.

[0036] When the refrigerator 100 is stationary, the spring 122 is also stationary, and its capacitance remains constant, so the charging and discharging time of the spring 122 is fixed. When the refrigerator 100 is running, the compressor and fan inside the refrigerator 100 generate vibrations, causing the cabinet 110 to vibrate accordingly. These vibrations are transmitted to the spring 122, causing it to be compressed or stretched. When the spring is stretched, the distance between the two poles of the spring 122 increases, thus decreasing the capacitance of the spring 122 and consequently reducing its charging and discharging time. Conversely, when the spring is compressed, the distance between the two poles of the spring 122 decreases, thus increasing its capacitance and consequently increasing its charging and discharging time. It is understandable that by collecting the charging and discharging time of the spring 122, the extent of its extension and contraction can be determined, which in turn can determine the vibration intensity of the cabinet 110 and thus the noise level.

[0037] Preferably, the spring 122 is a rectangular spring, meaning that the projection of the spring 122 in its extension and contraction direction is rectangular. It should be noted that, due to its higher jitter threshold, the rectangular spring can amplify the changes in charging and discharging time caused by the vibration of the spring 122, thereby improving the vibration detection accuracy of the spring sensor.

[0038] For example, the spring 122 includes a spring body and a first pin and a second pin connected to both ends of the spring body. Both the first pin and the second pin extend in a first direction, which is parallel to the extension and retraction direction of the spring body. The height of the spring body in the extension and retraction direction is between 10 cm and 12 cm, and the circumferential length is 17 ± 0.2 cm and the width is 8 ± 0.2 cm.

[0039] In some embodiments, the processing unit 130 is used to input the charging and discharging duration into the electrical signal model, so that the electrical signal model outputs noise data. The electrical signal model is trained based on at least one set of sample data, which includes sample charging and discharging durations and corresponding sample noise values. The sample data can be obtained through multiple sample collection experiments before the refrigerator leaves the factory. During the sample collection experiments, the refrigerator body can be sequentially controlled to experience different vibration intensities, and the charging and discharging duration of the spring and the decibel value of the noise generated by the refrigerator body can be detected successively to obtain at least one set of sample data. For example, the collected multiple sets of sample data can also be divided into a training data set and a test data set. The training data set is used to input the data into a classifier for training to obtain the electrical signal model, and the test data set is used to test the accuracy of the electrical signal model.

[0040] In some other embodiments, the processing unit 130 is used to calculate the duration difference between the charging / discharging duration and the set duration, and input the duration difference into the electrical signal model so that the electrical signal model outputs noise data. The electrical signal model is trained based on at least one set of sample data, which includes sample duration differences and sample noise values ​​corresponding to the sample charging / discharging durations. The set duration is the charging / discharging duration of the spring 122 when the refrigerator 100 is stationary. Therefore, the duration difference between the charging / discharging duration and the set duration is positively correlated with the extension / retraction amplitude of the spring 122. It can be understood that a larger duration difference indicates a larger extension / retraction amplitude of the spring 122, resulting in a larger vibration amplitude of the cabinet 110 and greater noise generated by the refrigerator 100; conversely, a smaller duration difference indicates a smaller extension / retraction amplitude of the spring 122, resulting in a smaller vibration amplitude of the cabinet 110 and less noise generated by the refrigerator 100.

[0041] In some embodiments, please refer to Figure 3 , Figure 3 This is another structural schematic diagram of a refrigerator provided in an embodiment of this application. The refrigerator 100 also includes a display device 140 and a communication module 150.

[0042] The display device 140 is connected to the processing unit 130 and is used to display the current noise level of the refrigerator 100. It should be noted that the processing unit 130 can calculate the noise level of the refrigerator 100 based on the vibration parameters of the cabinet 110 and feed the noise level back to the display device 140 so that the display device 140 can display the noise level. In this way, the user can understand whether the refrigerator 100 is functioning properly by knowing its noise level. The noise data may include, for example, the actual noise levels of the refrigerator measured at multiple times within a preset time period, and the noise level displayed by the display device 140 may be the average noise level of several consecutive actual noise levels. The display device 140 may be an LED indicator, an LCD screen, or other display device.

[0043] The communication module 150 is connected to the processing unit 130 and is used to connect to the backend server. In some embodiments, the communication module 150 can transmit noise data to the backend server when the noise data of the refrigerator reaches a preset condition. Thus, the backend server can learn and analyze the noise data to understand the continuous performance of the refrigerator 100, or determine whether the refrigerator 100 has a malfunction or other abnormality, and then provide feedback to the user. The noise data may include the noise values ​​of the refrigerator at multiple moments within a preset time period. When several consecutive noise values ​​exceed a preset value, the processing unit 130 determines that the noise data has reached the preset condition. The communication module 150 may be a WIFI / 4G / 5G / 6G module.

[0044] In some embodiments, the refrigerator 100 is also equipped with an alarm device. When the noise data shows that the noise emitted by the refrigerator 100 is too loud, the alarm device can issue a prompt message to the user, such as issuing an alarm sound or an indicator light / icon, to prompt the user to have the refrigerator inspected.

[0045] It should be noted that the processing unit 130 can be a chip, which is connected to the spring 122 to acquire the electrical signal generated by the spring 122, thereby obtaining the charging and discharging duration of the spring 122. Some parameter settings for the chip can be as follows:

[0046] Input Settings: Configures the actual number of inputs used, maps the actual spring to the channel, and sets the input threshold; a smaller threshold value results in greater sensitivity, while a larger threshold value results in greater stability. Channel Sampling Depth: Sets the number of times each channel samples before processing data; it can be 3, with larger values ​​indicating slower response. Baseline Update Sampling Count: Sets the baseline update count after processing a certain number of data points. Force Cancel Time: Sets the time after which the baseline is forcibly updated to cancel the button state after the button is held down for a preset time. Continuous Press Trigger Count: Sets the number of consecutive data processing results before the button is considered pressed. Continuous Release Trigger Count: Sets the number of consecutive data processing results before the button is considered released. Low Power Mode Enable: Enables low power mode when low power applications are present. Watchdog Sleep Time: Sets the low power sleep time. Enter Low Power Mode Time: Sets the time after which the device automatically enters sleep mode without button operation.

[0047] Regarding the mounting position of the spring vibration sensor 120 on the housing 110, to ensure the accuracy and sensitivity of noise detection, this application provides an embodiment. Please refer to [link to embodiment]. Figures 4-5 , Figure 4 This is a schematic diagram of another structure of the refrigerator provided in an embodiment of this application. Figure 5 This is a schematic diagram of a vibration sensor installed in a cabinet according to an embodiment of this application. The refrigerator 100 can be as follows: Figure 4The French door refrigerator shown can also be a French door refrigerator, a side-by-side refrigerator, a double door refrigerator, or other types of refrigerators. Refrigerator 100 also includes a compressor 160, and the cabinet 110 forms a compressor chamber 170, with the compressor 160 disposed within the compressor chamber 170; a spring vibration sensor 120 is disposed above the compressor chamber 170. The compressor 160 is typically the largest noise source in refrigerator 100. By placing the spring vibration sensor 120 on the compressor chamber 170, bringing the spring vibration sensor 120 close to the compressor 160, the sensitivity of its noise detection is improved.

[0048] For example, the housing 110 includes a back plate 111 and a bottom plate 112. The compressor 160 is fixedly mounted on the bottom plate 112, and the spring vibration sensor 120 is disposed on the back plate 111. A mounting port 113 communicating with the compressor chamber 170 can be provided on the back plate 111, so that the compressor 160 can be installed into the compressor chamber 170 through the mounting port 113. The housing 110 also includes a compressor back plate (not shown), which is used to detachably mount the mounting port 113 on the back plate 111 to close the mounting port 113. Optionally, the spring vibration sensor 120 is disposed on the back plate 111 at a position above the compressor back plate. For example, if the height of the compressor back plate is 30cm, the spring vibration sensor 120 is disposed on the back plate 111 at a predetermined distance above the compressor back plate, for example, 5cm.

[0049] The refrigerator 100 provided in this application embodiment uses a spring vibration sensor 120 to detect the vibration of the cabinet, thereby calculating the noise value based on the vibration parameters and realizing the noise detection of the refrigerator 100. Compared with the sound sensor used in the prior art, the spring vibration sensor is cheaper and simpler in structure. It can reduce the sensor cost while meeting the accuracy of noise detection, improve the cost advantage of the refrigerator, and ensure the correctness of the subsequent intelligent control of the refrigerator based on the noise detection results, so as to realize the stable operation of the refrigerator 100.

[0050] The refrigerator provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A refrigerator, characterized in that, include: Box; A spring vibration sensor is installed on the cabinet to detect the vibration generated by the cabinet when the refrigerator is running; The processing unit is connected to the spring vibration sensor and is used to acquire the vibration parameters of the housing.

2. The refrigerator according to claim 1, characterized in that, The spring vibration sensor includes a spring and a charging and discharging circuit. The input terminal of the charging and discharging circuit is adapted to be connected to a power source. One end of the spring is connected to the output terminal of the charging and discharging circuit, and the other end is grounded. The charging and discharging circuit is used to charge the spring. The processing unit is connected to the charging and discharging circuit and is used to collect the charging and discharging time of the spring.

3. The refrigerator according to claim 2, characterized in that, The spring is a rectangular spring.

4. The refrigerator according to claim 2, characterized in that, The spring includes a spring body and a first pin and a second pin connected to both ends of the spring body. Both the first pin and the second pin extend in a first direction, which is parallel to the extension and retraction direction of the spring body.

5. The refrigerator according to claim 4, characterized in that, The height of the spring body in the extension direction is between 10 cm and 12 cm, and its length in the circumferential direction is 17 ± 0.2 cm and its width is 8 ± 0.2 cm.

6. The refrigerator according to any one of claims 1-5, characterized in that, The refrigerator also includes a display device connected to the processing unit for displaying the current noise level of the refrigerator.

7. The refrigerator according to any one of claims 1-5, characterized in that, The refrigerator also includes a communication module, which is connected to the processing unit and used to connect to a backend server.

8. The refrigerator according to any one of claims 1-5, characterized in that, The refrigerator also includes a compressor, the cabinet forms a compressor chamber, and the compressor is disposed in the compressor chamber; The spring vibration sensor is mounted on the press chamber.

9. The refrigerator according to claim 8, characterized in that, The housing includes a back panel and a bottom panel. The compressor is fixedly mounted on the bottom panel, and the spring vibration sensor is disposed on the back panel.

10. The refrigerator according to claim 9, characterized in that, The housing also includes a compressor back plate, the bottom of which has an installation port. The compressor is installed into the compressor chamber through the installation port. The compressor back plate is detachably mounted on the installation port on the back plate to close the installation port. The spring vibration sensor is positioned at a predetermined distance above the press back plate.

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