CN202281453U - Refrigerator with freshness detection device - Google Patents

Abstract

The utility model discloses a refrigerator equipped with a freshness detection device, which comprises a refrigeration system, a door body, a refrigerator and/or a freezer, and the freshness detection device is arranged in the refrigerator, and the freshness detection device includes sequentially It is connected with an information collection device for collecting food information, an A/D converter for digitizing food information, a single-chip microcomputer for storing and analyzing digital food information, and a display device for displaying food information. When in use, the information collection device is used to collect information on various foods put into the refrigerator, and the collected food information is digitized by an A/D converter and stored in a single-chip microcomputer, and displayed through a display device. When the user takes out the food in the refrigerator, the information collection device is used again to collect the food information. At the same time, the single-chip microcomputer analyzes and matches the food information, and uses the storage time or storage time + whether the shelf life is expired to detect the freshness of the food. .

Description

A refrigerator equipped with a freshness detection device

technical field

The utility model relates to the field of refrigerators, in particular to a refrigerator provided with a freshness detection device.

Background technique

As a household appliance necessary for daily life, refrigerators have been widely used, but they have also brought new problems. The food stored in the refrigerator cannot be checked in time, resulting in waste of food beyond the shelf life. In this regard, various refrigerator food management systems have emerged:

In the first method, the user will number the food stored in the refrigerator, and then set the storage period, and the system will record the storage time of each numbered food. Afterwards, if the user wants to know the storage status of the food in the refrigerator, he must remember the number corresponding to the food one by one, and then query the storage information of each numbered food through button operation; It is extremely inconvenient to use. When there are many foods stored in the refrigerator, it is difficult for the user to remember the corresponding serial number, which causes unnecessary trouble.

The second method is to use the refrigerator image segmentation method to simulate the internal structure of the refrigerator for labeling, which requires specific labeling of the food on which refrigerator layer is placed, which is also more cumbersome;

The third method is to sense the concentration of substances released by oxidation of food in the refrigerator through the installed gas sensor, and then compare it with the set value of the single-chip microcomputer to judge. The sensor set by this method has limitations, and there is a phenomenon that the food to be detected is missed; for example, the carbon monoxide sensor can only detect the concentration of carbon monoxide released by the food in the refrigerator. Omissions such as not releasing carbon monoxide but still being stale have not been definitively resolved.

Disclosed as Chinese application CN03114171.4 is a refrigerator fruit and vegetable freshness prompter, which acts on the fruit and vegetable room (1) in the refrigerator (9), which includes: for contacting the CO2 gas in the fruit and vegetable room (1), and The MQ135 type gas sensor (3) that produces a voltage signal change when detecting its concentration change; the detection unit (8) used to detect and process the signal of the gas sensor (3); used to detect the opening and closing time of the door of the refrigerator (9) State gate switch (2); PIC16C730-04/PS single-chip MCU (4) for completing logic reasoning and data processing; A/D converter (7) for analog and digital conversion; for generating A light-emitting diode (5) for light prompting; a buzzer (6) for generating sound prompting. The fruit and vegetable freshness prompter can timely remind people to eat as soon as possible through the sound and light prompt mode when the freshness of the fruit and vegetable drops to a certain level.

Both the numbering method and the method of simulating the internal structure of the refrigerator will bring cumbersome operations, and the gas sensor method, although the operation is relatively simple, but if only one or two gas sensors are used, there will be problems caused by the limited sensed gas. Food overdue detection omissions and other phenomena, but the use of multiple gas sensors has problems such as technology and high cost. Therefore, it is of great significance to develop a refrigerator with a simple structure provided with a freshness detection device.

In view of this, the utility model is proposed.

Utility model content

The purpose of this utility model is to provide a refrigerator with a freshness detection device. In order to achieve this purpose, the following technical solutions are adopted:

A refrigerator equipped with a freshness detection device, comprising a refrigeration system, a door body, a refrigerator and/or a freezer, the refrigerator is provided with a freshness detection device, and the freshness detection device includes sequentially connected to collect An information collection device for food information, an A/D converter for digitizing food information, a single-chip microcomputer for storing and analyzing digitalized food information, and a display device for displaying food information, wherein the information collection device includes collecting An image acquisition device for images and a timing device for collecting food deposit/retrieval time.

The freshness detection device is also provided with an auxiliary input device for the user to manually input food information, and the auxiliary input device is connected with the A/D converter.

The auxiliary input device is a button, a tablet or a touch screen.

The described timing device is that the described timing device is a multiple clock circuit arranged on a single-chip microcomputer to separately time different types of storage/retrieval foods.

The image acquisition device is a miniature camera that can effectively collect food images installed in the refrigerator and/or freezer.

The miniature camera is arranged on the top of the refrigerator compartment and/or the freezer compartment to avoid the central position of the shelf and/or the drawer.

The display device is a display screen and/or a sound output device for displaying food information.

The display device is also provided with an alarm buzzer.

The display device is also provided with light emitting diodes.

Below in conjunction with accompanying drawing, this utility model is elaborated:

The utility model utilizes the information collection device to collect information of various foods put into the refrigerator, digitizes the collected food information through an A/D converter, stores it in a single-chip microcomputer, and displays it through a display device. When the user takes out the food in the refrigerator, the information collection device is used again to collect the food information. At the same time, the single-chip microcomputer analyzes and matches the food information, and uses the food storage time or food storage time + whether the shelf life is over and the freshness of the food as indicators. In order to achieve the purpose of detecting freshness. In the process of freshness detection, the realization of the food information collection process requires the user to pass in front of the camera before storing or taking out the food in the refrigerator to collect effective food information.

A refrigerator equipped with a freshness detection device claimed in the utility model includes a refrigeration system, a door body, a refrigerator room and/or a freezer room. Compared with the prior art, the utility model is different in that a freshness detection device is provided in the refrigerator, and the freshness detection device includes an information collection device connected in sequence to collect food information, and an A/D device for digitalizing food information. A converter, a single-chip microcomputer for storing and analyzing digitalized food information, and a display device for displaying food information, the information collection device includes an image collection device for collecting images and a timing device for collecting food storage/retrieval time.

The timing device in the utility model is a multiple clock circuit arranged on a single-chip microcomputer to separately time different kinds of food in/out of storage.

The image acquisition device in the utility model is a miniature camera that can effectively collect food images installed in the refrigerator and/or freezer. The miniature camera contains a photosensitive element, and the photosensitive element automatically activates the freshness detection device after sensing the light source of the refrigerator door opening.

The display device is a display screen and/or a sound output device for displaying food information.

For each piece of food that needs to be monitored and tested for its freshness, the food passes through the image acquisition device during storage. At this time, the image acquisition device can collect images of the food, and the timing device automatically obtains the storage time (the storage time The default is the time to acquire the food image), and it is digitized by the A/D converter and passed to the microcontroller. For repeated insertion of the same food, the expiration date of the first food is taken as the default, and it can also be adjusted by the user. At this time, the single-chip microcomputer sorts out the data converted by the A/D converter, and establishes an ID number for the food to save, and the ID includes the image and storage time of the food. At the same time, the single-chip microcomputer reflects the information corresponding to the ID number on the display board in the form of images and text.

When taking out food with an ID number established, the user passes the food in front of the image acquisition device. At this time, the image acquisition device collects the image of the food again, and the timing device automatically obtains the removal time (the removal time defaults to the time when the food image is acquired) , and passed to the single-chip microcomputer after being digitalized by the A/D converter. At this time, the single-chip microcomputer performs matching analysis on the data converted by the A/D converter. Compare and analyze to confirm the ID number of the food. At this time, the single-chip microcomputer automatically calculates the storage time of the food, and displays it on the display screen together with the image, and uses the storage time as an indicator to prompt the user, and the user judges the freshness of the food according to the storage time of the food.

In order to better realize the purpose of the utility model, the inventor proposes a preferred implementation manner. Specifically, an auxiliary input device for the user to manually input food information is provided in the freshness detection device, and the auxiliary input device is connected with the A/D converter, and may specifically be a button, a tablet or a touch screen. When food is stored in the refrigerator, its image and storage time are first collected, and at the same time, the user inputs the shelf life of the food and other additional information, such as food name or remarks, through the auxiliary input device. After the user confirms, the information input by the auxiliary input device and the food information collected by the information collection device are digitized by the A/D converter and then transmitted to the single-chip microcomputer. Create an ID number to save, the ID includes the image of the food, storage time and shelf life. At the same time, the single-chip microcomputer reflects the information corresponding to the ID number on the display board in the form of images and text.

When taking out food with an ID number established, the user passes the food in front of the image acquisition device. At this time, the image acquisition device collects the image of the food again, and the timing device automatically obtains the removal time (the removal time defaults to the time when the food image is acquired) , and passed to the single-chip microcomputer after being digitalized by the A/D converter. At this time, the single-chip microcomputer performs matching analysis on the data converted by the A/D converter. Compare and analyze to confirm the ID number of the food. At this time, the single-chip microcomputer automatically calculates the storage time of the food, compares the storage time with the shelf life, and judges whether the shelf life has passed, and finally displays the image of the food, storage time, and whether the shelf life has expired on the display screen. Whether the shelf life has expired is an indicator to remind users of the freshness of food.

As a preferred solution of the present utility model, the above-mentioned miniature camera is arranged on the top of the refrigerator compartment and/or the freezer compartment to avoid the central position of the shelf and/or the drawer.

As another preferred solution of the present utility model, the display device is a display screen and/or a sound output device. When the display device is only the sound output device, the food information output from the single-chip microcomputer is output from the sound output device in the form of voice broadcast instead of the display screen. When the display device is a display screen + sound output device, the sound output device can be selected to only be used to prompt whether the food has expired, and other food information can be displayed through the display screen.

As another preferred solution of the present utility model, the display device is also provided with an alarm buzzer. The function of the alarm is that when the food exceeds the preset shelf life, the alarm on the display device can immediately send out an alarm to remind the user.

As another preferred solution of the present utility model, the display device is further provided with a light emitting diode. When the storage date of the food in the refrigerator exceeds the shelf life, the buzzer installed on the display board will give an alarm. At the same time, with the light of the LED, the alarm time of the buzzer can be set to 20s, 60s or 120s. The diode flashes and emits light (can last 1-3 minutes longer than the alarm time).

During the storage of food in the refrigerator, when the food exceeds the preset shelf life, the alarm on the display device will sound an alarm first, and the diode can also flash and light. The alarm time and the LED light time can be set according to specific conditions, such as alarm The time is 20 seconds, the LED light-emitting time is 120 seconds, etc.

In addition to displaying food information on the display screen when storing/retrieving food, the food information can also be displayed on the display device when the user opens the door or touches the display screen; especially for foods that have been stored for longer than the shelf life and have not been processed by the user, When the user opens the door or touches the display, the display automatically displays food information that has expired. When there is no operation on the refrigerator for more than 3 minutes, the display will automatically enter the power saving state.

In addition to adopting the technical scheme of siren + diode to remind the food that has passed the shelf life, the utility model can also adopt other reminding methods, such as when the display device is equipped with a sound output device, the information of the food that has passed the shelf life can only be automatically sent by the voice. The output device performs a voice prompt. Or combine the voice prompt of the sound output device and the mode of displaying food information on the display screen to remind the user at the same time.

Take a simple double-door refrigerator as an example. The structure of the refrigerator includes a refrigerator compartment and a freezer compartment. The top of the refrigerator compartment and the freezer compartment are each equipped with a miniature camera in the center of the shelf and/or drawer. After the refrigerator is powered on, the door opens In the state, the user puts the food that needs to be monitored for freshness into the refrigerator after being scanned by the micro-camera. At this time, the micro-camera will collect the information of the food one by one, and the timing device that starts at the same time obtains the food storage time. It is optional to manually input food shelf life and other information through the auxiliary input device. After confirmation by the user, all the above food information will be converted into digital signals by the A/D converter and transmitted to the single-chip microcomputer, and the single-chip microcomputer will convert the A/D converter. Matching analysis is made on the data, and an ID number is established for the collected food to be stored. The ID includes and corresponds to all food information of the food. At the same time, the single-chip microcomputer reflects the information corresponding to the ID number on the display board in the form of images and text. .

When taking out food with an ID number established, the user passes the food in front of the image acquisition device. At this time, the image acquisition device collects the image of the food again, and the timing device automatically obtains the removal time (the removal time defaults to the time when the food image is acquired) , and passed to the single-chip microcomputer after being digitalized by the A/D converter. At this time, the single-chip microcomputer performs matching analysis on the data converted by the A/D converter. Compare and analyze to confirm the ID number of the food. At this time, the single-chip microcomputer automatically calculates the storage time of the food, compares the storage time with the shelf life, and judges whether the shelf life has passed, and finally displays the image of the food, storage time, and whether the shelf life has expired on the display screen. Whether the shelf life has expired is an indicator to remind users of the freshness of food.

During the storage of food in the refrigerator, when the food exceeds the preset shelf life, the alarm on the display device will sound an alarm first, and the diode can also flash and light at the same time. The alarm time lasts for 20 seconds and the LED light-emitting time is 120 seconds. If the user does not do anything after the display device sends out various prompts, the display screen will automatically enter the power saving state after 3 minutes.

By adopting the above technical scheme, the utility model can check the storage time of the food in the refrigerator at any time to detect its freshness. At the same time, when the food exceeds the shelf life, it can also be reminded in time, which further helps to improve the user's eating environment and provides users with high quality life. The utility model has the advantages of simple structure, low cost and remarkable effect, and is suitable for popularization and use on refrigerators.

Description of drawings

The structural block diagram of Fig. 1 utility model freshness detection device

Detailed ways

Below in conjunction with embodiment the utility model is further described in detail.

Example 1

The refrigerator described in this embodiment includes a refrigeration system, a door body, a refrigerator compartment and/or a freezer compartment. In addition, the refrigerator in this embodiment is also equipped with a freshness detection device as shown in Figure 1, which includes an information collection device connected in sequence to collect food information, an A/D converter for digitalizing food information device, a single-chip microcomputer for storing and analyzing digitalized food information, and a display device for displaying food information. The information collection device includes an image collection device for collecting images and a timing device for collecting food storage/retrieval time. Wherein the timing device is a multi-clock circuit arranged on the single chip microcomputer to separately time different kinds of storage/retrieval foods. The image acquisition device is a miniature camera that can effectively collect food images installed in the refrigerator and/or freezer. The miniature camera contains a photosensitive element, and the photosensitive element automatically activates the freshness detection device after sensing the light source of the refrigerator door opening. The display device is a display screen and/or a sound output device for displaying food information.

Example 2

Compared with Embodiment 1, the only difference is that in this embodiment, the above-mentioned freshness detection device may also be provided with an auxiliary input device for the user to manually input food information, and the auxiliary input device is connected to the A/D converter. Specifically, it may be a button, a tablet or a touch screen.

Example 3

Compared with Embodiment 1, the only difference is that in this embodiment, an alarm buzzer is also provided on the display device.

Example 4

Compared with Embodiment 3, the only difference is that in this embodiment, a light emitting diode is also provided on the display device.

Example 5

A miniature camera is respectively arranged at the central position of the refrigerator compartment and the freezer compartment of the refrigerator, which can avoid the central position of the shelf and/or the drawer. After the refrigerator is powered on and the door is open, the user puts the food that needs to be monitored for freshness into the refrigerator after being scanned by the micro-camera. The device obtains the storage time of food, and the user can choose to manually input the shelf life of the food and other information that needs to be noted through the auxiliary input device. The data converted by the /D converter is matched and analyzed, and an ID number is established for the collected food to be stored. The ID includes and corresponds to all food information of the food. At the same time, the single-chip microcomputer converts the information corresponding to the ID number in the form of images and text reflected on the display panel.

When taking out food with an ID number established, the user passes the food in front of the image acquisition device. At this time, the image acquisition device collects the image of the food again, and the timing device automatically obtains the removal time (the removal time defaults to the time when the food image is acquired) , and passed to the single-chip microcomputer after being digitalized by the A/D converter. At this time, the single-chip microcomputer performs matching analysis on the data converted by the A/D converter. Compare and analyze to confirm the ID number of the food. At this time, the single-chip microcomputer automatically calculates the storage time of the food, compares the storage time with the shelf life, and judges whether the shelf life is over, and finally displays the image of the food, storage time, and whether the shelf life is over. Expired shelf life is an indicator to remind users of the freshness of food.

During the storage of food in the refrigerator, when the food exceeds the preset shelf life, the alarm on the display device will sound an alarm first, and the diode can also flash and light, wherein the alarm time is 20 seconds, and the diode light-emitting time is 120 seconds.

In addition to displaying food information on the display screen when storing/retrieving food, the food information can also be displayed on the display device when the user opens the door or touches the display screen; especially for foods that have been stored for longer than the shelf life and have not been processed by the user, When the user opens the door or touches the display screen, the display screen automatically displays food information that has expired. When there is no operation on the refrigerator for more than 3 minutes, the display will automatically enter the power saving state.

By adopting the above technical scheme, the utility model can check the storage time of the food in the refrigerator at any time to detect its freshness. At the same time, when the food exceeds the shelf life, it can also be reminded in time, which further helps to improve the user's eating environment and provides users with high quality life.

The implementation schemes in the above-mentioned examples can be further replaced, and the examples only describe the preferred embodiments of the present utility model, and do not limit the concept and scope of the present utility model. Various changes and improvements made by those skilled in the art to the technical solution of the utility model all belong to the protection scope of the utility model.

Claims (9)

1. A refrigerator provided with a freshness detection device, comprising a refrigeration system, a door body, a refrigerator and/or a freezer, characterized in that, the described refrigerator is provided with a freshness detection device, and the freshness detection device includes An information collection device for collecting food information, an A/D converter for digitizing food information, a single-chip microcomputer for storing and analyzing digitalized food information, and a display device for displaying food information are sequentially connected, wherein the The information collection device includes an image collection device for collecting images and a timing device for collecting food storage/retrieval time. 2. The refrigerator according to claim 1, wherein the freshness detection device is further provided with an auxiliary input device for the user to manually input food information, and the auxiliary input device is connected with the A/D converter. 3. The refrigerator according to claim 2, wherein the auxiliary input device is a button, a tablet or a touch screen. 4. The refrigerator according to claim 1 or 2, characterized in that the timing device is a multiple clock circuit arranged on a single-chip microcomputer to separately time different kinds of food stored/taken out. 5. The refrigerator according to claim 1 or 2, characterized in that the image acquisition device is a miniature camera installed in the refrigerating room and/or freezing room and capable of effectively collecting food images. 6 . The refrigerator according to claim 5 , wherein the miniature camera is arranged on the top of the refrigerator compartment and/or freezer compartment so as to avoid the central position of the shelf and/or drawer. 7. The refrigerator according to claim 1 or 2, characterized in that the display device is a display screen and/or a sound output device for displaying food information. 8. The refrigerator according to claim 1 or 2, characterized in that: said display device is also provided with an alarm. 9. The refrigerator according to claim 8, characterized in that: said display device is also provided with a light emitting diode.

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