Fault detection assembly and washing machine
Patent Information
- Application Number
- CN202521920197.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-05
AI Technical Summary
其中，当水位传感器出现故障时，会影响洗衣机对衣物的处理效果
[0023]本申请实施例提供的故障检测组件和洗衣机中，使用信号发生器和电流检测器来检测特定频率下的电流信号，控制器根据电流信号与预存的电流阈值范围的对比来确定水位传感器是否故障，检测器件简单，并且电流信号可以精确反映水位传感器的状态，因此可以准确判断水位传感器的好坏。
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Figure CN224663200U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of washing machine technology, and particularly relates to a fault detection component and a washing machine. Background Technology
[0002] Washing machines typically contain a water level monitoring device, also known as a water level sensor. This sensor monitors the water level in the washing machine and sends feedback to the main control board to control the water level. A malfunctioning water level sensor can affect the washing machine's ability to process clothes.
[0003] While high-precision detection can be achieved for water level sensor fault detection, the equipment structure is complex. Utility Model Content
[0004] This application provides a fault detection component and a washing machine, which can use simple devices to detect faults in a water level sensor and accurately determine whether the water level sensor is good or bad.
[0005] In a first aspect, embodiments of this application provide a fault detection component applied to a washing machine, the washing machine including a water level sensor, the fault detection component comprising:
[0006] A signal generator, one end of which is connected to the water level sensor, is used to generate a test frequency;
[0007] A current detector is connected at one end to the signal generator and at the other end to the water level sensor. The current detector is used to detect the current signal of the water level sensor corresponding to the test frequency.
[0008] A controller, connected to the current detector, is used to determine whether the water level sensor is faulty based on a comparison of the current signal with a current threshold range.
[0009] Optionally, the controller is also connected to the signal generator, and the controller is used to send a test signal to the signal generator and cause it to generate a test frequency corresponding to the test signal.
[0010] Optionally, the fault detection component further includes:
[0011] A frequency adjustment button is electrically connected to the controller. The frequency adjustment button is used to receive user operation commands, and the controller is used to generate the test signal according to the operation commands.
[0012] Optionally, the fault detection component further includes:
[0013] The display includes a frequency adjustment button and is used to display the test frequency of the signal generator.
[0014] Optionally, the display is also electrically connected to the current detector, and the display is used to display the current value detected by the current detector.
[0015] Optionally, the controller is further configured to determine that the water level sensor is faulty when at least one of the multiple current signals exceeds the current threshold range.
[0016] Optionally, the fault detection component further includes:
[0017] A power supply unit is connected to the current detector, and the power supply unit is used to supply power to the current detector.
[0018] Optionally, the power supply component is a lithium battery.
[0019] Secondly, embodiments of this application also provide a washing machine, comprising:
[0020] A water level sensor is used to detect the water level inside the inner drum of the washing machine;
[0021] A fault detection component is electrically connected to the water level sensor, and the fault detection component is used to detect whether the water level sensor is faulty.
[0022] Optionally, the water level sensor includes an inductor and a capacitor connected in parallel.
[0023] In the fault detection component and washing machine provided in this application embodiment, a signal generator and a current detector are used to detect the current signal at a specific frequency. The controller determines whether the water level sensor is faulty based on the comparison between the current signal and the pre-stored current threshold range. The detection device is simple, and the current signal can accurately reflect the state of the water level sensor, so the good or bad condition of the water level sensor can be accurately determined. Attached Figure Description
[0024] 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 accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] 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.
[0026] Figure 1 This is a schematic diagram of the structure of a fault detection component provided in an embodiment of this application.
[0027] Figure 2This is another structural schematic diagram of the fault detection component provided in the embodiments of this application.
[0028] Figure 3 A circuit structure diagram of a fault detection component provided in an embodiment of this application. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0030] This application provides a fault detection component and a washing machine, which can use simple devices to detect faults in water level sensors and accurately determine the condition of the water level sensors. The following description is in conjunction with the accompanying drawings.
[0031] It should be noted that the fault detection component can be applied to washing machines. Washing machines include a water level sensor, which detects the water level inside the drum. The water level sensor consists of an inductor and a capacitor connected in parallel, meaning it is composed of an LC oscillation circuit. The fault detection component is used to detect faults in the water level sensor. Of course, the fault detection component can also be used in other electronic devices with water level sensors, such as dishwashers and water heaters.
[0032] For example, please refer to Figure 1 As shown, Figure 1 This is a schematic diagram of a fault detection component provided in an embodiment of this application. The fault detection component 100 includes a signal generator 110, a current detector 120, and a controller 130.
[0033] The signal generator 110 has two terminals. One end is connected to the wiring port of the water level sensor via a wire, and the other end is connected to the input terminal of the current detector 120 via a wire. The signal generator 110 is used to generate test frequencies. Since the water level sensor in this embodiment is composed of an LC oscillation circuit, it has the characteristic of different currents at different frequencies, and there is a certain variation pattern. Therefore, the signal generator 110 can be used to generate different test frequencies, so that the water level sensor can generate different currents in response to different test frequencies. The signal generator 110 is used to generate electrical signals of different frequencies, and it has a frequency adjustment function, which can accurately adjust the output signal frequency within a certain frequency range according to the detection requirements.
[0034] One end of the current detector 120 is connected to the signal generator 110, and the other end is connected to the water level sensor. The current detector 120 is used to detect the current signal of the water level sensor at different test frequencies. That is to say, the water level sensor, the signal generator 110, and the current detector 120 form a series circuit. Since the water level sensor is composed of an LC oscillation circuit, the current change at different frequencies follows a certain pattern. The current detector 120 is used to detect the magnitude of the current in the circuit, and it has the characteristics of high precision and fast response, enabling it to acquire current data accurately in real time.
[0035] The controller 130 can be a microcontroller chip. The controller 130 can be understood as the control center of the fault detection component 100. The controller 130 is connected to the current detector 120. The controller 130 is used to determine whether the water level sensor is faulty based on the comparison between the current signal and the current threshold range.
[0036] In the fault detection component 100 provided in this application embodiment, a signal generator and a current detector are used to detect the current signal at a specific frequency. The controller determines whether the water level sensor is faulty based on the comparison between the current signal and the pre-stored current threshold range. The detection device is simple, and the current signal can accurately reflect the state of the water level sensor, so the good or bad condition of the water level sensor can be accurately determined.
[0037] For example, controller 130 is used to determine a water level sensor malfunction when at least one of a plurality of current signals exceeds a current threshold range.
[0038] The controller 130 is also connected to the signal generator 110. The controller 130 is used to send test signals to the signal generator 110 and make it generate the test frequency of the corresponding test signal.
[0039] The test frequency of the signal generator 110 can be set or adjusted by the user. For example, the fault detection component 100 also includes a frequency adjustment button, which is electrically connected to the controller 130. The frequency adjustment button is used to receive operation commands from the user, and the controller 130 is used to generate test signals according to the operation commands.
[0040] To facilitate real-time monitoring of the test results, a display can be provided to show the parameters during the test. For example, the fault detection component 100 also includes a display, and the frequency adjustment buttons can be integrated into the display housing, or the frequency adjustment buttons can be virtual buttons integrated onto the display screen. The display shows the test frequency of the signal generator 110. For instance, the user can set the frequency value using the frequency adjustment buttons on the display. After receiving the command, the controller 130 controls the signal generator 110 to output a signal of the corresponding frequency.
[0041] Furthermore, the display is electrically connected to the current detector 120, and the display is also used to display the current value of the current detector 120.
[0042] For example, please refer to Figure 2 and Figure 3 As shown, Figure 2 This is another structural schematic diagram of the fault detection component provided in the embodiments of this application. Figure 3 This is a schematic diagram of a circuit structure of a fault detection component provided in an embodiment of this application. The fault detection component 100 also includes a power supply component 160, which is connected to a current detector 120 and is used to supply power to the current detector 120. The power supply component 160 can be a 5V output lithium battery, which can provide a stable power supply to the current detector 120.
[0043] During testing, the water level sensor to be measured is connected to the detection circuit consisting of signal generator 110 and current detector 120 via a connecting wire. The signal generator 110 is turned on and outputs the current generated under different frequency signals in sequence according to the preset frequency sequence. The current value measured by the water level sensor at the corresponding frequency is compared with that of a good water level sensor. If the current value deviation exceeds the allowable error range at one or more test frequencies, the water level sensor is judged to be faulty.
[0044] In the fault detection component 100 provided in this application embodiment, the water level sensor is composed of an LC oscillation circuit, and the current varies at different frequencies, exhibiting a certain variation pattern. A signal generator 110, a current detector 120, and a power supply 160 are included. During detection, the water level sensor to be tested is first connected to the fault detection component 100. The signal generator 110 outputs signals of different frequencies, and the current detector 120 detects and records the current value at the corresponding frequency. By comparing whether the current values of a good water level sensor are the same under the same frequency signal, it is possible to accurately determine whether the water level sensor to be tested is faulty, comprehensively evaluate the performance of the water level sensor, and promptly detect potential faults. The fault detection component 100 in this application embodiment has a relatively simple structure, with the main components being the common signal generator 110 and current detector 120. This reduces the manufacturing cost of the equipment, and due to its ease of operation, it does not require professional technicians, making it suitable for widespread application in production and maintenance scenarios of different scales. By detecting the current changes of the water level sensor at different frequencies, the performance of the water level sensor can be more comprehensively evaluated, and potential faults can be detected in a timely manner.
[0045] This application also provides a washing machine, which includes a water level sensor and the aforementioned fault detection component. The water level sensor is used to detect the water level inside the inner drum of the washing machine. The water level sensor includes an inductor and a capacitor connected in parallel, that is, the water level sensor is composed of an LC oscillation circuit. The fault detection component is used to detect whether the water level sensor is faulty. The fault detection component can be referred to the above description and will not be repeated here. Since this washing machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0046] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0047] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.
[0048] The fault detection component and washing machine provided in the embodiments of this application have 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 fault detection component, characterized in that, Applied to a washing machine, the washing machine including a water level sensor, the fault detection component includes: A signal generator, one end of which is connected to the water level sensor, is used to generate a test frequency; A current detector is connected at one end to the signal generator and at the other end to the water level sensor. The current detector is used to detect the current signal of the water level sensor corresponding to the test frequency. A controller, connected to the current detector, is used to determine whether the water level sensor is faulty based on a comparison of the current signal with a current threshold range.
2. The fault detection component according to claim 1, characterized in that, The controller is also connected to the signal generator, and the controller is used to send a test signal to the signal generator and cause it to generate a test frequency corresponding to the test signal.
3. The fault detection component according to claim 2, characterized in that, The fault detection component also includes: A frequency adjustment button is electrically connected to the controller. The frequency adjustment button is used to receive user operation commands, and the controller is used to generate the test signal according to the operation commands.
4. The fault detection component according to claim 3, characterized in that, The fault detection component also includes: The display includes a frequency adjustment button and is used to display the test frequency of the signal generator.
5. The fault detection component according to claim 4, characterized in that, The display is also electrically connected to the current detector, and the display is used to display the current value detected by the current detector.
6. The fault detection component according to claim 1, characterized in that, The controller is also configured to determine that the water level sensor is faulty when at least one of the multiple current signals exceeds the current threshold range.
7. The fault detection component according to claim 1, characterized in that, The fault detection component also includes: A power supply unit is connected to the current detector, and the power supply unit is used to supply power to the current detector.
8. The fault detection component according to claim 7, characterized in that, The power supply component is a lithium battery.
9. A washing machine, characterized in that, include: A water level sensor is used to detect the water level inside the inner drum of the washing machine; A fault detection component is electrically connected to the water level sensor, and the fault detection component is used to detect whether the water level sensor is faulty.
10. The washing machine according to claim 9, characterized in that, The water level sensor includes an inductor and a capacitor connected in parallel.