CN104266935A - Multi-functional portable balance for determining maturity of watermelon - Google Patents
Multi-functional portable balance for determining maturity of watermelon Download PDFInfo
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- CN104266935A CN104266935A CN201410562277.3A CN201410562277A CN104266935A CN 104266935 A CN104266935 A CN 104266935A CN 201410562277 A CN201410562277 A CN 201410562277A CN 104266935 A CN104266935 A CN 104266935A
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- watermelon
- balance
- melon
- measurement
- density
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Abstract
The invention provides a multi-functional portable balance for determining the maturity of a watermelon. The balance comprises a measuring unit, a central calculating and controlling unit and a display unit. The balance belongs to a tool which is carried by people in daily life, and when the maturity of the watermelon needs to be judged, the balance can be used for conveniently determining the maturity of the watermelon. The shape of the balance is like a spring balance, a handle is arranged at the upper end of the balance, a balance body which comprises a weight sensor, a length sensor and a fixed rope buckle of measuring lines is arranged in the middle of the balance, and two measuring lines are arranged at the lower end of the balance. The balance has the principle that the maturity of the watermelon is judged by calculating the density range of the body of the watermelon, the balance is simple and practical, and is convenient to carry.
Description
Technical field
The invention belongs to daily life fields of measurement, belong to the instrument utilizing electronic technology to carry out Watermelon Maturity measurement.
Background technology
Watermelon is one of modal fruit in people's daily life, because taste is sweet, quenching one's thirst is loved by the people.The degree of ripeness of watermelon judges concerning melon grower it is not problem, but is but a difficult problem concerning most consumers.
At present, although there is a variety of determination methods, comprise listening method, hand palpating manipulation etc., these will lean on experience, are not not too accurate, also poorly grasp.In addition also have special monitoring instrument, comprise watermelon pol monitor, phonetic analysis monitor, measuring density instrument, these instruments too specialty or heaviness are not suitable for people and carry with.
Summary of the invention
The object of the invention is, in order to provide one to carry with Multifunctional water melon maturemeter, by a kind of method of easy Density Detection, to judge the degree of ripeness of watermelon.
The present invention is the technical scheme solving the employing of its technical matters:
The Watermelon Maturity that density based is measured measures a scale, comprises measuring unit, center calculation control module and display unit.The length that measuring unit measures melon body is enclosed and is enclosed and weight with short, and data are passed to computing unit, and computing unit calculates the density of watermelon according to measurement data, and the density range contrasting ripe watermelon produces testing result display on a display screen.
Described measuring unit comprises linear measure longimetry and weight measurement.Wherein linear measure longimetry comprises two and measures rope, and the pulse signal adopting two photoimpact sensor to read to measure on rope also carries out length that counting obtains watermelon and encloses and enclose with short, calculates the volume of melon body according to the computing method of approximate spheroid.Weight measurement adopts resistance-strain sensing to obtain the weight data of melon body.
Described center calculation control module is a Single Chip Microcomputer (SCM) system, selectivity can carry out Watermelon Maturity measurement, also can carry out universal measurement and comprise linear measure longimetry, area measurement, health check-up measurement, weight measurement and density measure.Single-chip microcomputer receives the data of measuring unit, according to density formula, calculates the average density of melon, judge at 0.9 ~ 0.95 gram/cc according to the density range of ripe melon, exceed for unripe watermelon, be less than for overdone melon, be ripe melon in scope, and result is sent to display unit.
Described display unit is a LED screen, and the data result receiving centralized control unit is presented in LED screen.
Innovative point of the present invention comprises:
1, adopt resistance-strain sensing and two photoimpact sensing to combine the weight and volume carrying out watermelon to measure;
2, be combined with multiple conventional survey instrument, be convenient for carrying.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram;
Fig. 2 is System Working Principle figure.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing, it illustrates principle of the present invention as the part of this instructions by embodiment.
The Watermelon Maturity that density based is measured measures a scale, comprises measuring unit, center calculation control module and display unit.This device belongs in daily life carries with instrument, when needing the degree of ripeness judging watermelon, can measure easily.Outer image spring balance of device, upper end is handle, and centre is scale body, and scale body comprises the fixing sling of weight sensor and linear transducer and slotted line, and hypomere has two slotted lines.During measurement, first fixing around one week along watermelon length direction with a slotted line, more laterally fixing around one week along watermelon with an other slotted line, linear transducer automatically calculates to grow and encloses and the short length value enclosed, and then calculate the volume of melon body.Then with scale body, melon is mentioned, weight sensor calculates the weight of melon body automatically, is calculated the density of melon body by center calculation unit, density range 0.9 ~ 0.95 gram/. ripe melon thought by the melon of cubic centimetre, be greater than this scope and think unripe watermelon, be less than this scope and think overdone melon.In addition this device as the survey instrument carried with of length, area, health check-up, weight and density etc., can also offer convenience to people's daily life.
The various change made by those skilled in the art or remodeling all can not depart from the scope of the present invention.
Claims (7)
1. the Watermelon Maturity that density based is measured measures a scale, comprises measuring unit, center calculation control module and display unit.
2. the length that measuring unit measures melon body is enclosed and is enclosed and weight with short, and data are passed to computing unit, and computing unit calculates the density of watermelon according to measurement data, and the density range contrasting ripe watermelon produces testing result display on a display screen.
3. the measuring unit described in comprises linear measure longimetry and weight measurement.
4. wherein linear measure longimetry comprises two and measures rope, and the pulse signal adopting two photoimpact sensor to read to measure on rope also carries out length that counting obtains watermelon and encloses and enclose with short, calculates the volume of melon body according to the computing method of approximate spheroid.
5. weight measurement adopts resistance-strain sensing to obtain the weight data of melon body.
6. the center calculation control module described in is a Single Chip Microcomputer (SCM) system, selectivity can carry out Watermelon Maturity measurement, also can carry out universal measurement and comprise linear measure longimetry, area measurement, health check-up measurement, weight measurement and density measure.
7. single-chip microcomputer receives the data of measuring unit, according to density formula, calculates the average density of melon, judge at 0.9 ~ 0.95 gram/cc according to the density range of ripe melon, exceed for unripe watermelon, be less than for overdone melon, be ripe melon in scope, and result is sent to display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562277.3A CN104266935A (en) | 2014-10-22 | 2014-10-22 | Multi-functional portable balance for determining maturity of watermelon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562277.3A CN104266935A (en) | 2014-10-22 | 2014-10-22 | Multi-functional portable balance for determining maturity of watermelon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104266935A true CN104266935A (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410562277.3A Pending CN104266935A (en) | 2014-10-22 | 2014-10-22 | Multi-functional portable balance for determining maturity of watermelon |
Country Status (1)
| Country | Link |
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| CN (1) | CN104266935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328683A (en) * | 2017-09-05 | 2017-11-07 | 卢浩然 | A kind of Watermelon Maturity monitoring device |
| CN112816357A (en) * | 2021-04-17 | 2021-05-18 | 潍坊创科种苗有限公司 | Device for monitoring growth maturity of watermelons by weighing method |
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| CN2042966U (en) * | 1988-11-12 | 1989-08-16 | 福建省农业科学院红萍研究中心 | Quick surveying instrument for small melon |
| JPH06205661A (en) * | 1993-01-08 | 1994-07-26 | Yanmar Agricult Equip Co Ltd | Method of non-destructive fruit sorting and device therefor |
| JP2000258325A (en) * | 1999-03-08 | 2000-09-22 | Yasushi Ishii | Density-judging apparatus by acoustic volumeter |
| JP2002139433A (en) * | 2000-11-02 | 2002-05-17 | Kansai Tlo Kk | Method for discriminating internal quality of vegetable and fruit |
| CN102095797A (en) * | 2010-10-29 | 2011-06-15 | 华南理工大学 | Fruit ripeness ultrasonic non-destructive detection method and system based on comparison method |
| CN201935902U (en) * | 2011-03-09 | 2011-08-17 | 黑龙江八一农垦大学 | Nondestructive inspection system for watermelon maturity |
| JP5298168B2 (en) * | 2011-07-15 | 2013-09-25 | 株式会社宝計機製作所 | Nondestructive quality evaluation method for fruits and vegetables |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328683A (en) * | 2017-09-05 | 2017-11-07 | 卢浩然 | A kind of Watermelon Maturity monitoring device |
| CN107328683B (en) * | 2017-09-05 | 2019-08-13 | 卢浩然 | A kind of Watermelon Maturity monitoring device |
| CN112816357A (en) * | 2021-04-17 | 2021-05-18 | 潍坊创科种苗有限公司 | Device for monitoring growth maturity of watermelons by weighing method |
| CN112816357B (en) * | 2021-04-17 | 2021-07-02 | 潍坊创科种苗有限公司 | Device for monitoring growth maturity of watermelons by weighing method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |
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| RJ01 | Rejection of invention patent application after publication |