Mini washing machine and anti-falling detection method and device thereof

Abstract

The present application relates to a kind of mini washing machine and its anti-falling detection method, device, the method comprises;Receive the sampling voltage of detection;Mini washing machine is detected by the sampling voltage of detection to carry out anti-falling detection.The present application judges the contact condition of mini washing machine detection point and detection device by the sampling voltage of detection, to judge the possible falling risk of mini washing machine, and by calculating trigger frequency, the falling risk of mini washing machine is realized to the reconfirmation, for further improving the technical support of pre-judgment precision, avoid the misjudgment of falling risk in specific scenario, improve the operating efficiency of mini washing machine.The present application can control detection time point, when the speed of mini washing machine reaches target speed, only trigger signal is sent to anti-falling detection circuit, to reduce the metal oxidation in detection device due to long time power-on, avoid detection failure.

Description

Technical Field

[0001] The present invention relates to the technical field of washing appliances, and in particular to a mini washing machine and an anti-fall detection method and device thereof. Background Art

[0002] Washing machines are essential appliances in modern households, bringing numerous conveniences to people's lives. Currently, most households use large-capacity washing machines, designed to wash the entire family's laundry. However, washing clothes together, such as underwear and baby clothes, poses the risk of cross-contamination. Washing individual or small items of clothing also wastes water and electricity. Consequently, a growing number of users are opting for mini washing machines specifically for these specialized garments.

[0003] Due to their small size, mini washing machines are often placed at heights such as countertops where they could fall. In daily life, mini washing machines may be in standby or running mode, with low-speed washes and high-speed spin cycles. If the mini washing machine enters the high-speed spin cycle and the drum is overloaded, causing significant eccentricity, the machine may shift and jump. If it is unable to detect whether a mini washing machine has fallen and implement appropriate anti-fall measures, a fall could cause personal injury or property damage to the user. Summary of the Invention

[0004] In order to achieve the above-mentioned purpose and other advantages according to the present invention, the first object of the present invention is to provide a mini washing machine anti-fall detection method, comprising the following steps:

[0005] receiving a sampled voltage detected;

[0006] The mini washing machine anti-fall detection is performed through the detected sampling voltage.

[0007] Furthermore, the mini washing machine anti-fall detection by detecting the sampled voltage includes the following steps:

[0008] If the detected sampled voltage is a first preset voltage signal, it is determined that the mini washing machine will fall, and the first preset voltage signal indicates that the detection point of the mini washing machine is not in contact with the detection device;

[0009] If the detected sampling voltage is a second preset voltage signal, it is determined that the mini washing machine will not fall, and the second preset voltage signal indicates that the detection point of the mini washing machine is in contact with the detection device.

[0010] Furthermore, the method further includes the step of sending a trigger signal to an anti-fall detection circuit.

[0011] Furthermore, the method further includes the steps of: obtaining the rotational speed of the mini washing machine motor, and sending a trigger signal to the anti-fall detection circuit according to the rotational speed control.

[0012] Furthermore, the sending of a trigger signal to the anti-fall detection circuit according to the speed control comprises the following steps:

[0013] Determine whether the speed of the mini washing machine motor reaches the target speed;

[0014] If the target speed is reached, a trigger signal is sent to the anti-fall detection circuit;

[0015] If the target speed is not reached, no trigger signal is sent to the anti-fall detection circuit.

[0016] Furthermore, the method further includes the steps of: executing a fall prevention program if it is determined that the mini washing machine will fall;

[0017] The mini washing machine anti-fall detection by detecting the sampled voltage further includes the following steps:

[0018] Calculating the detected sampling voltage as the frequency of the first preset voltage signal;

[0019] If the calculated frequency reaches a preset frequency, it is determined that the mini washing machine will fall.

[0020] Furthermore, the execution of the anti-fall program is to cut off all strong electrical loads, lock the washing machine door, and issue an alarm message.

[0021] Furthermore, the method further includes the steps of: detecting water accumulation in the mini washing machine by using the detected sampling voltage; if the detected sampling voltage reaches a third preset voltage signal, it is determined that water has accumulated and the mini washing machine is stopped.

[0022] A second object of the present invention is to provide a mini washing machine anti-fall detection device, comprising:

[0023] A receiving unit, configured to receive a detected sample voltage;

[0024] The anti-drop detection unit is used to perform anti-drop detection on the mini washing machine through the detected sampling voltage.

[0025] The third object of the present invention is to provide a mini washing machine, comprising: a memory on which a program code is stored; a processor connected to the memory, and when the program code is executed by the processor, a mini washing machine anti-fall detection method is implemented.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a mini washing machine and its anti-fall detection method and device. The method determines the contact status between the detection point of the mini washing machine and the detection device through the detected sampling voltage, thereby determining the possible fall risk of the mini washing machine. The method also reconfirms the fall risk of the mini washing machine by calculating the trigger frequency, providing strong technical support for further improving the prediction accuracy, avoiding misjudgment of fall risks in specific scenarios, and improving the operating efficiency of the mini washing machine.

[0028] The present invention can control the detection time point. When the speed of the mini washing machine reaches the target speed, such as when the mini washing machine is running at high speed, a trigger signal is sent to the anti-drop detection circuit to trigger the anti-drop detection circuit. When the speed of the mini washing machine does not reach the target speed, such as when the mini washing machine is running at low speed or in standby mode, no trigger signal is sent to the anti-drop detection circuit and the anti-drop detection circuit is not triggered, thereby reducing the situation of metal oxidation in the detection device due to long-term power-on and avoiding detection failure.

[0029] The present invention can also detect water accumulation in the scene where the mini washing machine is located. When water accumulation is detected, the mini washing machine is stopped to prevent water from entering the electrical components at the bottom of the mini washing machine.

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 This is a flow chart of a mini washing machine anti-fall detection method;

[0033] Figure 2 This is the anti-fall detection circuit diagram of Example 1;

[0034] Figure 3 This is a principle block diagram of a mini washing machine anti-fall detection device;

[0035] Figure 4 This is a functional block diagram of a mini washing machine. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] In the subsequent description, suffixes such as "module," "component," or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "module," "component," or "unit" can be used interchangeably. Example 1

[0038] A mini washing machine anti-fall detection method, such as Figure 1 As shown, the following steps are included:

[0039] receiving a sampled voltage detected;

[0040] The mini washing machine anti-fall detection is performed by detecting the sampled voltage. Specifically, the following steps are included:

[0041] If the detected sample voltage is a first preset voltage signal, it is determined that the mini washing machine will fall, and the first preset voltage signal indicates that the detection point of the mini washing machine is not in contact with the detection device;

[0042] If the detected sampling voltage is the second preset voltage signal, it is determined that the mini washing machine will not fall, and the second preset voltage signal indicates that the detection point of the mini washing machine is in contact with the detection device.

[0043] like Figure 2 As shown, the anti-fall detection circuit is used to detect the contact between the bottom feet of the mini washing machine and the detection device. In this embodiment, the detection devices are placed on the four bottom feet of the mini washing machine. Figure 2 In the process, the mini washing machine is placed on the ground or on a table. Its own weight presses down the spring in the detection device, causing the metal sheet at the top of the spring to contact the metal probe. The anti-fall detection circuit detects the contact between the detection point of the mini washing machine and the detection device, thereby determining the possible fall risk of the mini washing machine. It should be understood that other parts of the mini washing machine can be selected as detection points according to actual usage scenarios or needs, not limited to the bottom feet of the washing machine; at the same time, the specific structure of the detection device can be designed according to actual conditions, not limited to the bottom feet of the washing machine. Figure 2 In addition, the specific implementation of the anti-fall detection circuit can be designed according to the actual situation, not limited to Figure 2 The circuit implementation method in the embodiment only needs to be able to detect the contact between the detection point of the mini washing machine and the detection device, thereby determining the possible falling risk of the mini washing machine.

[0044] Figure 2In the anti-drop detection circuit, POWER_EN is used to control the enable of the anti-drop detection circuit. When the MCU gives POWER_EN a low level, transistor Q1 is turned on, and current flows through resistors R1 and R3, so that the anti-drop detection circuit starts to work; CHECK is used to transmit the detected sample voltage to the MCU. The MCU determines the possible drop risk of the current washing machine based on the detected voltage.

[0045] Assume that the base of the mini washing machine is suspended in the air, the metal probe at the bottom is separated from the metal contact piece, and the resistance values ​​of resistors R1 and R2 are designed to be equal. Then, when transistor Q1 is turned on, ignoring the voltage drop of transistor Q1 itself, the voltage at point A is the 1:1 voltage divided by resistors R1 and R3 on the 5V power supply, that is, 2.5V. Therefore, the sampled voltage detected by the MCU is 2.5V.

[0046] When the mini washing machine is placed firmly on the ground or a table, the metal probe at the bottom of the mini washing machine's feet touches the metal contact piece, which is equivalent to a short circuit in resistor R3, causing resistor R3 to be directly connected to the power ground. The voltage detected by the MCU is 0V, indicating that the mini washing machine is safely placed on the ground or a table without displacement or jumping.

[0047] against Figure 2 In the implementation of the anti-fall detection circuit and detection device provided in [1], the first preset voltage signal is set to a high level and the second preset voltage signal is set to a low level. If the detected sampled voltage is a high level, it is determined that the mini washing machine will fall; if the detected sampled voltage is a low level, it is determined that the mini washing machine will not fall.

[0048] In order to reconfirm the fall risk of the mini washing machine, provide strong technical support for further improving the prediction accuracy, avoid misjudgment of fall risks in specific scenarios, and improve the operating efficiency of the mini washing machine, the following steps are also included:

[0049] Calculating the detected sampling voltage as the frequency of the first preset voltage signal;

[0050] If the calculated frequency reaches a preset frequency, it is determined that the mini washing machine will fall.

[0051] By calculating the trigger frequency, the risk of the mini washing machine falling can be reconfirmed, providing strong technical support for further improving the prediction accuracy, avoiding misjudgment of the risk of falling in specific scenarios, and improving the operating efficiency of the mini washing machine.

[0052] In order to enable the anti-drop detection circuit to be turned on as needed and avoid problems such as detection failure caused by the anti-drop detection circuit working continuously, the present embodiment further includes the step of sending a trigger signal to the anti-drop detection circuit. Figure 2The anti-drop detection circuit in the circuit is enabled by the POWER_EN control circuit. When the MCU gives POWER_EN a low level, the anti-drop detection circuit can be enabled, so that the entire metal probe and the metal contact piece can conduct electricity.

[0053] When the mini washing machine enters the high-speed spin stage, if the load inside the mini washing machine drum is too large, resulting in excessive eccentricity, the mini washing machine will shift and jump. When the mini washing machine is in standby or operating at a low speed, the above situation is unlikely to occur. In order to control the detection time point of the detection device according to the speed of the mini washing machine motor, the following steps are also included: obtaining the speed of the mini washing machine motor and sending a trigger signal to the anti-drop detection circuit according to the speed control. Specifically, the following steps are included:

[0054] Determine whether the speed of the mini washing machine motor reaches the target speed;

[0055] If the target speed is reached, a trigger signal is sent to the anti-fall detection circuit; for example, when the mini washing machine is running at high speed, giving POWER_EN a low level can enable the detection circuit, so that the entire metal probe and metal contact piece can conduct electricity.

[0056] If the target speed is not reached, no trigger signal is sent to the anti-drop detection circuit. For example, when the washing machine is in standby or running at low speed, giving POWER_EN a high level will turn off the anti-drop detection circuit, thereby reducing the risk of metal oxidation in the detection device due to long-term power supply and avoiding detection failure.

[0057] When a fall risk is detected, appropriate anti-fall measures should be promptly implemented to prevent personal injury or property damage to the user. This embodiment also includes the following steps: If the mini washing machine is determined to be at risk of falling, an anti-fall procedure is executed. This procedure involves disconnecting all high-voltage loads, locking the washing machine door, and issuing an alarm, such as an audible or displayed warning. Depending on the actual situation, anti-fall measures such as speed reduction or software correction may also be implemented.

[0058] When the floor or countertop where the mini washing machine is located is dry, Figure 2 The metal contact piece of the detection device has a very low resistance. When the ground or table where the mini washing machine is located is flooded due to water leakage from the mini washing machine itself or pipes, the accumulated water will not reach the ground. Figure 2 When the metal probe of the detection device is inserted, the metal probe can detect the resistance value of the current water level. Because water itself has resistance, water is connected in parallel with the metal contact piece and then with Figure 2The resistor R2 of the anti-fall detection circuit is connected in parallel and forms a series voltage divider with the resistor R1, and then passes through the resistor R3 to the MCU for AD value sampling.

[0059] The mini washing machine detects water accumulation using the sampled voltage. If the sampled voltage reaches a third preset voltage, water accumulation is detected and the mini washing machine stops operating. This allows for water accumulation detection in any scenario where the mini washing machine is located. When water accumulation is detected, the mini washing machine stops operating to prevent water from entering the mini washing machine's bottom electrical components. Example 2

[0060] A mini washing machine anti-fall detection device 100, such as Figure 3 Shown, including:

[0061] A receiving unit 101 is configured to receive a detected sample voltage;

[0062] The anti-drop detection unit 102 is used to perform anti-drop detection on the mini washing machine through the detected sample voltage.

[0063] For detailed description of each of the above units, please refer to the corresponding description in the above method embodiment, which will not be repeated here. Example 3

[0064] A mini washing machine 200, such as Figure 4 As shown, it includes but is not limited to: a memory 201, on which program codes are stored; a processor 202, which is connected to the memory and implements a mini washing machine anti-fall detection method when the program codes are executed by the processor.

[0065] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the device embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0066] The above description is only an example of the present invention and is not intended to limit one or more embodiments of the present invention. For those skilled in the art, various changes and variations may be made to one or more embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present invention shall be included in the scope of the claims of one or more embodiments of the present invention.

Claims

1. A mini washing machine anti-fall detection method, characterized in that: The following steps are involved: receiving a sampled voltage detected; The mini washing machine is tested for anti-falling by the detected sampling voltage; The method further includes the steps of: detecting water accumulation in the mini washing machine by using the detected sampling voltage; if the detected sampling voltage reaches a third preset voltage signal, determining that water has accumulated and stopping the mini washing machine; The mini washing machine anti-drop detection by detecting the sampled voltage includes the following steps: If the detected sampled voltage is a first preset voltage signal, it is determined that the mini washing machine will fall, and the first preset voltage signal indicates that the detection point of the mini washing machine is not in contact with the detection device; If the detected sampling voltage is a second preset voltage signal, it is determined that the mini washing machine will not fall, and the second preset voltage signal indicates that the detection point of the mini washing machine is in contact with the detection device.

2. A mini washing machine anti-fall detection method according to claim 1, characterized in that: The method further includes the step of sending a trigger signal to an anti-fall detection circuit.

3. A mini washing machine anti-fall detection method according to claim 1, characterized in that: The method further includes the steps of obtaining the rotational speed of the mini washing machine motor and sending a trigger signal to the anti-fall detection circuit according to the rotational speed control.

4. A mini washing machine anti-fall detection method according to claim 3, characterized in that: The sending of a trigger signal to the anti-fall detection circuit according to the speed control comprises the following steps: Determine whether the speed of the mini washing machine motor reaches the target speed; If the target speed is reached, a trigger signal is sent to the anti-fall detection circuit; If the target speed is not reached, no trigger signal is sent to the anti-fall detection circuit.

5. The mini washing machine anti-fall detection method according to claim 1, characterized in that: The method further includes the steps of: executing a fall prevention program if it is determined that the mini washing machine will fall; The mini washing machine anti-fall detection by detecting the sampled voltage further includes the following steps: Calculating the detected sampling voltage as the frequency of the first preset voltage signal; If the calculated frequency reaches a preset frequency, it is determined that the mini washing machine will fall.

6. A mini washing machine anti-fall detection method according to claim 5, characterized in that: The execution of the anti-fall program is to cut off all strong electrical loads, lock the washing machine door, and issue an alarm message.

7. A mini washing machine anti-fall detection device, using the method according to any one of claims 1 to 6, characterized in that: include: A receiving unit, configured to receive a detected sample voltage; The anti-drop detection unit is used to perform anti-drop detection on the mini washing machine through the detected sampling voltage.

8. A mini washing machine, characterized in that: include: a memory having program code stored therein; A processor is coupled to the memory, and when the program code is executed by the processor, the method according to any one of claims 1 to 6 is implemented.

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