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Device and method for detecting freshness of foods in refrigerator

A detection device and a technology for freshness, which can be used in measuring devices, household refrigeration devices, low temperature temperature measurement, etc., and can solve problems such as inability to judge the freshness of food

Pending Publication Date: 2020-06-30
CHANGHONG MEILING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is impossible to use a fixed threshold to judge the freshness of food

Method used

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  • Device and method for detecting freshness of foods in refrigerator
  • Device and method for detecting freshness of foods in refrigerator
  • Device and method for detecting freshness of foods in refrigerator

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] When the food gravity is 0, the food freshness threshold M=0; when the temperature is 25°C and the food gravity is equivalent to 500g food, the food freshness threshold M=food standard threshold; when food is placed in the area to be tested, the detection module Detect food temperature and gravity through temperature sensor 7 and gravity sensor 8, detect volatile gas data through ammonia sensor 4, hydrogen sulfide sensor 5 and ethanol sensor 6, and transmit to data processing and storage module; After data analysis, it is determined whether the food is meat, aquatic products or fruits and vegetables, and then the freshness threshold of such food under standard conditions is obtained from the database, and the food freshness threshold is calculated according to the formula M=k*gravity*(temperature+food standard threshold ), the calculation result is compared with the concentration V of the detected food. When V≥M, it is judged that the food is not fresh. When V<M, it is j...

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PUM

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Abstract

The invention discloses a device and a method for detecting the freshness of foods in a refrigerator, and relates to the technical field of refrigerators. A detection module is sequentially provided with a gas inlet, a gas chamber and a gas outlet from front to back; an ammonia sensor, a hydrogen sulfide sensor and an ethanol sensor are arranged in the middle of the gas chamber side by side; a temperature sensor and a gravity sensor are also arranged below the gas chamber; the detection module transmits detected gas data to a data processing and storage module; a processor processes the received data; and the data processing and storage module transmits a processing result to a display module for display. The detection device is arranged to monitor volatile gas in refrigerator gas, and thedata processing and storage module analyzes and processes the volatile gas to judge the types of foods in the refrigerator and judge the freshness of the foods at different temperatures and differentweights; and rotten foods can be accurately positioned, and a user is timely notified to clean.

Description

technical field [0001] The invention belongs to the technical field of refrigerators, in particular to a device and method for detecting the freshness of food in a refrigerator. Background technique [0002] With the user's demand for health, the rapid detection of food in refrigerators and related intelligent technologies have developed rapidly. Among them, the technology of detecting food freshness based on food odors has developed rapidly in the refrigerator industry. At present, the industry mainly installs the freshness sensor directly on the refrigerator, sets a fixed freshness threshold, and judges the freshness of food by comparing the detected value with the threshold. However, based on the fact that the concentration of food odor is directly related to the ambient temperature, food temperature, food type and food weight: the lower the temperature, the smaller the concentration of odor volatilized after food spoilage; the smaller the weight of food, the smaller the ...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01G19/00G01K13/00F25D29/00
CPCG01N33/0054G01N33/0044G01N33/0047G01G19/00G01K13/006F25D29/003
Inventor 胡海梅江峰
Owner CHANGHONG MEILING CO LTD