CN104359978A - Ripeness-degree measuring device for watermelons - Google Patents
Ripeness-degree measuring device for watermelons Download PDFInfo
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- CN104359978A CN104359978A CN201410623267.6A CN201410623267A CN104359978A CN 104359978 A CN104359978 A CN 104359978A CN 201410623267 A CN201410623267 A CN 201410623267A CN 104359978 A CN104359978 A CN 104359978A
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Abstract
The invention discloses a ripeness-degree measuring device for watermelons, which is used for accurately detecting the ripeness degree of the watermelons. The ripeness-degree measuring device comprises a sound-wave acquisition module, a central processing module and a display module. When in use, sound waves are generated by knocking the watermelons, the sound-wave acquisition module acquires and converts the sound waves into electric signals, and the central processing module transmits a conclusion obtained after analyzing and processing the electric signals to the display module for displaying a detection result. The ripeness-degree measuring device disclosed by the invention has the beneficial effects that by acquisition of the sound-wave signals by knocking the watermelons, a peak frequency interval can be obtained, the ripeness degree is judged according to experimental data, and a detection conclusion is displayed on the display module, so that convenience is brought for selecting the watermelons.
Description
Technical field
The present invention relates to food machinery field, be specially a kind of Watermelon ripeness tester.
Background technology
People, when selecting watermelon, are rule of thumb whether judge its maturation mostly, pat listening or weigh weight in the hand, can not get quantitative conclusion, and can not ensure the accuracy rate selected.Or see its maturity by cutting an osculum with cutter, damaged so again the integrality of watermelon, be unfavorable for that transport is carried, also affected attractive in appearance.If a kind of instrument of Non-Destructive Testing watermelon maturity can be had, will address this problem, bring very big convenience.
Summary of the invention
The invention provides a kind of instrument, accurately can detect the degree of ripeness of watermelon, select watermelon to people and bring more convenience.
Technical solution of the present invention is as follows:
A kind of Watermelon ripeness tester, it comprises sound collecting module, central processing module and display module.Produce sound wave by knocking watermelon, sound collecting module acquires sound wave is converted into electric signal, and central processing module is transferred to display module display testing result to reaching a conclusion after electric signal analyzing and processing.
Described sound collecting module realizes the collection to voice signal, and to be quantized signal by circuit and encode, and finally realizes the conversion of sound wave to electric signal.
Described central processing module can carry out digital processing to the electric signal of aforementioned sound collecting module transfer, obtains its crest frequency interval, more interval according to the Data Placement of great many of experiments gained before, just can draw the division result of watermelon maturity.
Described display module connects central processing module, for showing the result of Watermelon Maturity.
The data conclusion that described experiment draws is: the crest frequency interval of unripe watermelon is for being greater than 190Hz, and the crest frequency interval of proper mature (ripe) melon is between 140Hz – 190Hz, and the crest frequency of overdone melon is interval for being less than 140Hz.
The invention has the beneficial effects as follows: by gathering the acoustic signals knocking watermelon, can show that its crest frequency is interval, experimentally data judge its maturity, and display module shows testing result, select watermelon bring convenience to people.
Accompanying drawing explanation
Fig. 1 is the structure of block diagram schematic diagram of Watermelon ripeness tester of the present invention.
Embodiment
Below in conjunction with Fig. 1, the present invention will be further described:
See Fig. 1, according to the present invention, when detection Watermelon Maturity, concrete operations mode is as follows: knock watermelon, certain sound wave can be produced, by sound collecting module (1), the acoustic signals collected is converted into electric signal, then central processing module (2) is sent to, central processing module (2) does digital signal processing to the electric signal received again, show that its crest frequency is interval, compare with the experimental data being stored in central processing module before, draw the degree of ripeness of this watermelon, send to display module (3), display Watermelon Maturity.
Claims (4)
1. a Watermelon ripeness tester, it comprises sound collecting module, central processing module and display module, sound wave is produced by knocking watermelon, sound collecting module acquires sound wave is converted into electric signal, and central processing module is transferred to display module display testing result to reaching a conclusion after electric signal analyzing and processing.
2. sound collecting module realizes collection to voice signal according to claim 1, and to be quantized signal by circuit and encode, and finally realizes the conversion of sound wave to electric signal.
3. central processing module can carry out digital processing to the electric signal of aforementioned sound collecting module transfer according to claim 1, obtain its crest frequency interval, interval according to the Data Placement of great many of experiments gained before again, just can draw the division result of watermelon maturity.
4. display module connects central processing module according to claim 1, for showing the result of Watermelon Maturity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623267.6A CN104359978A (en) | 2014-11-09 | 2014-11-09 | Ripeness-degree measuring device for watermelons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623267.6A CN104359978A (en) | 2014-11-09 | 2014-11-09 | Ripeness-degree measuring device for watermelons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104359978A true CN104359978A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410623267.6A Pending CN104359978A (en) | 2014-11-09 | 2014-11-09 | Ripeness-degree measuring device for watermelons |
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| CN (1) | CN104359978A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459499A (en) * | 2018-12-26 | 2019-03-12 | 广东机电职业技术学院 | A kind of ripe degree fast detector of the watermelon based on STM32 and method |
| CN112842062A (en) * | 2021-03-01 | 2021-05-28 | 广东美的厨房电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and readable storage medium |
| CN114740091A (en) * | 2022-06-14 | 2022-07-12 | 湖南大学 | Watermelon maturity detection method and system based on acoustic analysis and machine learning |
| WO2023029311A1 (en) * | 2021-08-31 | 2023-03-09 | 合肥美的电冰箱有限公司 | Fruit maturity detection method and apparatus, device, and storage medium |
-
2014
- 2014-11-09 CN CN201410623267.6A patent/CN104359978A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459499A (en) * | 2018-12-26 | 2019-03-12 | 广东机电职业技术学院 | A kind of ripe degree fast detector of the watermelon based on STM32 and method |
| CN112842062A (en) * | 2021-03-01 | 2021-05-28 | 广东美的厨房电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and readable storage medium |
| WO2023029311A1 (en) * | 2021-08-31 | 2023-03-09 | 合肥美的电冰箱有限公司 | Fruit maturity detection method and apparatus, device, and storage medium |
| CN114740091A (en) * | 2022-06-14 | 2022-07-12 | 湖南大学 | Watermelon maturity detection method and system based on acoustic analysis and machine learning |
| CN114740091B (en) * | 2022-06-14 | 2022-09-06 | 湖南大学 | Watermelon maturity detection method and system based on acoustic analysis and machine learning |
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Application publication date: 20150218 |