Method and device for automatically controlling porridge and milk cooking firepower based on human eye vision principle

A technology of human vision and control methods, applied in electrical program control, program control in sequence/logic controllers, instruments, etc., can solve the problem of uneven consistency of porridge, inaccuracy, and poor control of temperature thresholds, etc. problem, to achieve the effect of accurate judgment, simple device structure and energy saving

Inactive Publication Date: 2012-02-22
OCEAN UNIV OF CHINA
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AI Technical Summary

Problems solved by technology

[0004] Due to the difference in air pressure and the characteristics of each kind of porridge and milk, the boiling temperature of each kind of porridge and milk is also different, and the temperature threshold is often difficult to control
The current gas or electric stoves that rely on temperature detection to adjust the gas supply are often inaccurate, and the porridge produced has different viscosities.

Method used

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  • Method and device for automatically controlling porridge and milk cooking firepower based on human eye vision principle
  • Method and device for automatically controlling porridge and milk cooking firepower based on human eye vision principle
  • Method and device for automatically controlling porridge and milk cooking firepower based on human eye vision principle

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Embodiment Construction

[0040] A method for automatic control of firepower for cooking porridge and milk based on the principle of human vision, characterized in that the method comprises the following steps:

[0041] Step 1. Install the camera device above the stove of the gas cooker or electric stove. In order to prevent water vapor from covering the camera, the camera is generally set at a position 30 to 40 degrees away from the top of the stove; the camera takes a picture at a fixed interval of δ seconds. For texture images of cooked porridge and milk, the value of δ can range from 0.1 to 2 seconds, and δ = 1 second for ease of calculation; the resolution of the camera does not need to be very high, generally 400*600-200* Between 300 and 300, such as the camera with a resolution of 321*521 used in the experiment.

[0042] Step 2, calculate the roughness of the texture, the specific method is as follows:

[0043] For each pixel point p(x, y) of the texture, calculate the average gray value A in w...

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Abstract

The invention discloses a method and a device for controlling porridge and milk cooking firepower based on a human eye vision principle. The method comprises the following steps of: shooting a texture image of porridge and milk in the cooking process at a fixed time interval by using a camera arranged above a cooking range, and calculating the roughness of the texture image; acquiring a roughnessdescriptor of the texture image through the deviation of non-overlapping windows of each pixel in horizontal and longitudinal directions; and analyzing whether the variation of the roughness meets the requirement of a threshold value, if so, controlling a stove to be in a soft fire state, and otherwise, returning to the first step. The device comprises the camera, a firepower control device, a control processing module, and a control panel and a clock module which are connected with the control processing module, wherein the control processing module comprises a camera control module, a boiling detection module, a soft fire pulse output module, a fire shut-off pulse output module and a data storage module. In the invention, the device has a simple structure, the method and the device are simple and practicable, make the firepower accurately determined and can also be applied to industrial and commercial cooking range equipment, and the supervision-free firepower of cooked porridge andmilk can be automatically controlled.

Description

technical field [0001] The invention relates to a control method and device for gas stove or electric furnace equipment, in particular to an automatic control method and device for porridge and milk firepower based on the principle of human vision, belonging to the field of machine vision and intelligent electronics. Background technique [0002] Cooking stoves are a kind of kitchen utensils necessary for life, mainly including household gas stoves and electric stoves. Due to the rising price of gas, the thermal efficiency performance of gas stoves is particularly important; at the same time, consumers have put forward higher requirements for the safety, energy saving and intelligence of gas stoves; Electrical appliances manufacturers pay attention to. [0003] The technical content of existing gas appliance products has been greatly improved compared with the initial stage, but most of them focus on safety. Although some of them consider energy saving, they are mainly limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04G06K9/00
Inventor 董军宇孙玉娟吴则举李华
Owner OCEAN UNIV OF CHINA
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