Microwave oven safety protection device based on acceleration sensor

Abstract

The utility model relates to a microwave oven safety protection device based on an acceleration sensor, which comprises the acceleration sensor, a main controller, a power supply module and an alarm, the acceleration sensor is arranged on a shell of a microwave oven, and a signal output end of the acceleration sensor is electrically connected with a data transmission pin of the main controller. A power supply pin of the main controller is connected with the power supply module, a filter capacitor is arranged between a grounding pin of the main controller and a grounding end, and an interruption pin of the main controller is in electric signal connection with the alarm. According to the microwave oven, the acceleration sensor is arranged on the shell of the microwave oven, the acceleration of the microwave oven in all directions can be detected through the acceleration sensor, the inclination angle of the microwave oven is calculated through the main controller, and if the inclination angle is larger than a set threshold value, the alarm gives an alarm, preferably voice alarm. A user can adjust the angle of the microwave oven in time, the microwave oven is prevented from being used in an inclined state, a shell of the microwave oven is prevented from deforming or internal parts are prevented from being damaged, and risks such as electric leakage and short circuit are avoided.

Description

Technical Field

[0001] This utility model relates to the field of microwave oven components, and in particular to a microwave oven safety protection device based on an acceleration sensor. Background Technology

[0002] Microwave ovens generate microwaves using a magnetron, causing water molecules in food to resonate and generate heat through friction, achieving rapid heating from the inside out. When using a microwave oven, it is crucial to avoid tilting it. Tilting the oven can cause uneven stress on internal components, leading to deformation of the outer casing or damage to internal parts, and even increasing the risk of electrical leakage or short circuits. Current technology typically relies on visual inspection to determine the tilt angle, which is inaccurate. The lack of a tilt detection device in microwave ovens may affect their lifespan, thus requiring improvement. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing microwave ovens lack a tilt angle detection device, which may affect the lifespan of the microwave oven, and to provide a microwave oven safety protection device based on an acceleration sensor.

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

[0005] An accelerometer-based microwave oven safety protection device includes an accelerometer, a main controller, a power supply module, and an alarm. The accelerometer is mounted on the microwave oven casing. The signal output terminal of the accelerometer is electrically connected to the data transmission pin of the main controller. The power supply pin of the main controller is connected to the power supply module. A filter capacitor is provided between the grounding pin and the grounding terminal of the main controller. The interrupt pin of the main controller is electrically connected to the alarm.

[0006] In the above scheme, the accelerometer is a triaxial accelerometer. With this configuration, the triaxial accelerometer can detect the acceleration of the microwave oven in the X, Y, and Z directions. The detected data is sent to the main controller, which can calculate the tilt angle of the microwave oven based on the acceleration values ​​in the X, Y, and Z directions, thus improving the accuracy of the tilt angle detection. The method of calculating the tilt angle using an accelerometer is existing technology and will not be elaborated upon here.

[0007] In the above solution, the alarm is a voice alarm. This setting makes it easier for users to understand that the microwave oven malfunction is caused by it being placed tilted, and to troubleshoot the problem by placing the microwave oven horizontally.

[0008] In the above scheme, the interrupt pin of the main controller is also connected to the power interrupt terminal of the microwave oven. With this setting, when the tilt angle of the microwave oven, calculated by the main controller using the acceleration detected by the accelerometer, exceeds a preset threshold, the main controller sends a signal to the power interrupt terminal of the microwave oven to cut off the power, thus providing power-off protection for the microwave oven.

[0009] It should be noted that, although the solution of this utility model requires the main controller to use the acceleration of the microwave oven in the X, Y, and Z directions detected by the accelerometer to calculate the tilt angle of the microwave oven, and to determine whether the tilt angle exceeds the set threshold, the procedures for calculating the tilt angle by the acceleration value detected by the accelerometer, and for determining whether to alarm or cut off the power protection by comparing the tilt angle with the threshold, are all existing. This utility model does not involve any improvement to the program method and fully meets the protection requirements of the utility model.

[0010] This invention has several advantages: The microwave oven safety protection device based on an accelerometer uses an accelerometer sensor installed on the microwave oven's casing. This sensor detects the microwave oven's acceleration in various directions. A program built into the main controller calculates the microwave oven's tilt angle, which is then compared to a set threshold. If the tilt angle is less than the threshold, no alarm is triggered; if the tilt angle is greater than the threshold, an alarm is triggered, preferably a voice alarm. This allows the user to adjust the microwave oven's angle promptly, preventing its use while tilted, thus preventing deformation of the casing or damage to internal parts, and avoiding risks such as electrical leakage and short circuits. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the microwave oven safety protection device based on an acceleration sensor according to this utility model.

[0012] Figure 2 This is the circuit schematic diagram of this utility model.

[0013] The attached diagram is labeled as follows: 1. Accelerometer sensor; 2. Main controller; 3. Power module; 4. Alarm; 5. Power interrupt terminal. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1 As shown, the microwave oven safety protection device based on an acceleration sensor of this utility model includes an acceleration sensor 1, a main controller 2, a power supply module 3, and an alarm 4.

[0016] Accelerometer 1 is preferably a triaxial accelerometer. With this configuration, triaxial accelerometer 1 can detect the acceleration of the microwave oven in the X, Y, and Z directions. The detected data is sent to the main controller 2, which can calculate the tilt angle of the microwave oven based on the acceleration values ​​in the X, Y, and Z directions, thus improving the accuracy of the tilt angle detection. The method for calculating the tilt angle using accelerometer 1 is existing technology and will not be described in detail here.

[0017] Accelerometer 1 is installed on the shell of the microwave oven. The location of the accelerometer 1 can be selected according to the structure of the microwave oven, for example, it can be installed on the inner wall or the outer wall of the microwave oven shell.

[0018] The main controller 2 can use existing control chips, such as the AB1536 chip, as long as the microwave oven tilt angle calculation program and angle comparison program are built into the chip.

[0019] like Figure 2 As shown, the main controller 2 is equipped with interrupt pins INT1 and INT2, power supply pins, ground pins, SCL pins, SDA pins and SA0 pins.

[0020] The SDA pin of the main controller 2 is electrically connected to the signal output terminal of the accelerometer 1. The power pin of the main controller 2 is connected to the power module. A filter capacitor is provided between the ground pin of the main controller 2 and the ground terminal. The interrupt pin of the main controller 2 is electrically connected to the alarm 4.

[0021] Alarm 4 preferably uses a voice alarm. When the tilt angle of the microwave oven is greater than the set threshold, it helps the user understand that the microwave oven malfunction is caused by the microwave oven being placed tilted, so that the fault can be eliminated and the microwave oven can be placed horizontally.

[0022] The interrupt pin of the main controller 2 is also connected to the power interrupt terminal 5 of the microwave oven. With this configuration, when the tilt angle of the microwave oven, calculated by the main controller 2 using the acceleration detected by the accelerometer 1, exceeds a preset threshold, the main controller 2 sends a signal to the power interrupt terminal 5 of the microwave oven to cut off the power and protect the microwave oven from power failure.

[0023] This utility model discloses a microwave oven safety protection device based on an acceleration sensor. When the microwave oven is plugged into a power strip, the acceleration sensor begins to detect the acceleration values ​​of the microwave oven in the X, Y, and Z directions. The main controller continuously reads the acceleration values ​​of the microwave oven in the three directions and calculates the tilt angle of the microwave oven. The tilt angle is compared with a set threshold. If it exceeds the set threshold, the alarm sounds and sends a signal to the power interruption terminal of the microwave oven to cut off the power, thus protecting the microwave oven from power failure.

[0024] This utility model discloses a microwave oven safety protection device based on an acceleration sensor, which enables users to adjust the angle of the microwave oven in time to prevent the microwave oven from being used in a tilted state, prevent the outer shell of the microwave oven from being deformed or the internal parts from being damaged, and avoid risks such as leakage and short circuit.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microwave oven safety protection device based on an acceleration sensor, characterized in that, The application relates to a microwave oven with an acceleration sensor, a main controller, a power module and an alarm, wherein the acceleration sensor is arranged on the shell of the microwave oven, the signal output end of the acceleration sensor is electrically connected with the data transmission pin of the main controller, the power pin of the main controller is connected with the power module, the filter capacitor is arranged between the grounding pin of the main controller and the grounding end, and the interrupt pin of the main controller is electrically connected with the alarm.

2. The acceleration sensor-based microwave oven safety protection device according to claim 1, characterized by: The acceleration sensor is a three-axis acceleration sensor.

3. The acceleration sensor-based microwave oven safety protection device according to claim 1, characterized by: The alarm is a voice alarm.

4. The acceleration sensor-based microwave oven safety protection apparatus according to claim 1, characterized by: The interrupt pin of the main controller is also connected with the power interrupt end of the microwave oven.

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