Food height measurement method for microwave oven

Abstract

A method for measuring the height of food in a microwave oven, comprising the following steps: placing food in the center of a tray in a cavity of a microwave oven, and performing hardware initialization; a laser emitter emits laser light, and a camera arranged parallel to the laser emitter receives the reflection of the food Laser; the microprocessor calculates the number of pixels Num from the center to the landing point, and reads the h value in the memory, and extracts the fixed pixel radian value rop and radian error offset; calculates the angle between the optical axis of the camera and the reflected laser: θ =Num×op+Offset; Substituting θ=Num×Rop+Offset into the formula to get food height h=H-D, when 28cm≤h<35cm, food temperature T=t+k3×(h-28); when 20cm≤ When h<28cm, food temperature T=t+5. The invention can accurately measure the height of the food and accurately heat the food.

Description

technical field [0001] The invention relates to a microwave oven, in particular to a method for measuring the height of food used in the microwave oven. Background technique [0002] Generally speaking, after the food is put in and sealed in the microwave oven, the power is turned on to the magnetron that can generate high-frequency waves, and the resulting microwaves are irradiated on the food, so that the molecules that make up the cooking food vibrate within 24 seconds. A cooking machine that uses the frictional heat generated to cook food by 150 million times. [0003] Microwave ovens are easy to control the temperature. Since all parts of the food can heat at the same time, they can evenly cook foods of different sizes and shapes, and they have many advantages such as saving cooking time and easy operation, so they are widely used in ordinary families. [0004] Such as figure 1 As shown, the microwave oven has a roughly hexahedron-shaped appearance, and is formed as a...

AI Technical Summary

Problems solved by technology

As a result, for objects of the same temperature at different heights, the temperature value obtained by the temperature sensor is different, so that the control unit obtains the wrong temperature of the food, and calls the wrong program so that the ideal heating effect cannot be achieved.

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