CN207717620U - A kind of fruit black heart detector - Google Patents

Abstract

The utility model belongs to technical field of food safety,It is related to the safety analysis of food,Especially a kind of fruit black heart detector,Including the source of parallel light projected in the horizontal direction,Beam condensing unit is installed in the relative spacing of the source of parallel light projecting direction,The beam condensing unit is equipped with photoelectric sensor backwards to the corresponding position of source of parallel light,Bracket is installed between the source of parallel light and beam condensing unit,For placing fruit in the bracket,The line light source includes lamp holder and object lens convex lens,It is staggeredly spaced in the horizontal direction in the lamp holder and the end face of bracket homonymy and the LED that multiple wavelength are 760nm and the LED that wavelength is 810nm is installed,Vertically-mounted between the lamp holder and bracket has the object lens convex lens,The beam condensing unit includes vertically-mounted imaging convex lens,It is vertically-mounted between the imaging convex lens and photoelectric sensor induction end to have focusing convex lens.

Description

A kind of fruit black heart detector

Technical field

The utility model belongs to technical field of food safety, is related to the safety analysis of food, especially a kind of fruit evil mind Sick detector.

Background technology

Black heart is the common disease during a kind of vegetables and fruits and proportion of crop planting, easily comes across pears, apple, pineapple, awns Fruit, eggplant, in potatoes and other crops.And fruit black heart then seriously affects the item property of fruit, especially high-grade fruit is wanted It avoids as possible.Still without a kind of ripened fruit black heart detector in existing market.For the black of most of high-grade fruit Worry is examined and mostly uses flashlight irradiation at present, artificial observation light source is shining into after fruit and diffuses uniformity to judge fruit Whether black heart is had.

Fruit to be measured is placed on a dark indoor holder by reviewer during observation, using bright light torch from The side of one direction irradiation fruit, then testing staff is by visually in the horizontal plane from the other three direction, checking It is whether uneven with the presence of diffusing for apparent shade or each side direction in fruit.If shade exists or the unevenness that diffuses It is even, just suspect that fruit has black heart, gives and rejects.

In summary in practical operation, there is certain deficiency in the detection mode of existing fruit black heart, have a disadvantage that：

1. this artificial detection method is time-consuming, everyone is only capable of 50~100 fruit of inspection, checkability per hour It is low.

2. examining accuracy very poor, influenced to colour Different Effects, the standard of this method with fruit various pieces by artificial factor True rate is only 50% or so, and many fruit are mistaken for black heart fruit, cause to waste.

3. needing the darkroom of one inspection of special configuration, reviewer's checked operation in the dark easily causes inspection The fatigue problem of personnel and cause colliding with for fruit.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of automatic detection, detection speed is fast, accurate True property is high, open by design, a kind of fruit black heart detector easy to operation.

The purpose of this utility model takes following technical scheme to realize：

A kind of fruit black heart detector, it is characterised in that：It is parallel at this including the source of parallel light projected in the horizontal direction The relative spacing in light source projects direction is equipped with beam condensing unit, which is equipped with light backwards to the corresponding position of source of parallel light Electric transducer.

Moreover, bracket is equipped between the source of parallel light and beam condensing unit, for placing fruit in the bracket.

Moreover, the source of parallel light includes lamp holder and object lens convex lens, along water in the end face of the lamp holder and bracket homonymy Square to staggeredly interval the LED that multiple wavelength are 760nm and the LED that wavelength is 810nm are installed, between the lamp holder and bracket Vertically-mounted have the object lens convex lens.

Moreover, the beam condensing unit includes vertically-mounted imaging convex lens, in the imaging convex lens and photoelectric sensor It is vertically-mounted between induction end to have focusing convex lens.

The advantages of the utility model and good effect are：

1, this detector uses source of parallel light so that source of parallel light can accurately be radiated at fruit surface, and be transmitted by fruit Light through beam condensing unit optically focused transmit in photoelectric sensor, can be examined according to the optical signal power received in photoelectric sensor The degree that fruit whether there is black heart and black heart is tested, realizes that automatic detection replaces the empirical judgement of original artificial detection, Promote the accuracy of detection.

2, the bracket installed in this detector positions fruit position, personnel easy to operation crowd for placing fruit Amount detection, promotes the accuracy and repeatability of detection.

3, it is the LED monochromatic sources of 810nm as main Detection wavelength that wavelength is used in this detector, is 760nm with wavelength LED monochromatic sources as auxiliary Detection wavelength, external light source and people can be calculated by the monochromatic light projection of different Detection wavelengths It influences caused by the influence of body heat source, and is deducted in the analysis and calculating in later stage, on the basis of meeting accuracy, Realize the job requirement of open by design.

4, the imaging convex lens that this detector is installed are used to the light projected by fruit surface carrying out projection imaging, and gather The imaging being projected in imaging convex lens is then carried out the induction end for being converged to photoelectric sensor by burnt convex lens.

5, in this detector, by source of parallel light, beam condensing unit and photoelectric sensor are used cooperatively, and replace original artificial inspection The range estimation empirical data of survey greatly improves the accuracy and repeatability of detection, and detection is quick, and service life is long, can be extensive Extend to relevant food safety detection unit, food security research institution, supermarket etc.；Vast application family is can also be used as to make Maturity for professional judgement fruit and effectively classification provide direct Data Detection for fruit harvesting, listing and storage.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the partial sectional view in the portions A-A in Fig. 1.

Specific implementation mode

The embodiments of the present invention are further described below in conjunction with attached drawing；The present embodiment is descriptive, is not Limited, it cannot thus limit the scope of protection of the utility model.

A kind of fruit black heart detector, the innovation of the utility model are, including the directional light projected in the horizontal direction Source is equipped with a beam condensing unit, pair of the beam condensing unit backwards to source of parallel light in the relative spacing of the source of parallel light projecting direction Answer position that photoelectric sensor 6 is installed.

In the present embodiment, a bracket 3 is installed between the source of parallel light and beam condensing unit, is used to place water in the bracket Fruit.

In the present embodiment, the source of parallel light includes lamp holder 1 and object lens convex lens 2, the end of the lamp holder and bracket homonymy Staggeredly interval is equipped with the LED7 that multiple wavelength are 760nm and the LED8 that wavelength is 810nm in the horizontal direction in face, in the lamp holder Vertically-mounted between bracket has the object lens convex lens.

In the present embodiment, the beam condensing unit includes vertically-mounted imaging convex lens 4, in the imaging convex lens and photoelectricity It is vertically-mounted between sensor sensing end to have focusing convex lens 5.

In the present embodiment, the signal output end of the photoelectric sensor can connect exterior PC or other analysis storage devices, For the information of acquisition to be collected, it is classified.

In the present embodiment, installation temperature capacity checking device can be also assisted, according to the temperature braking correction check number for examining scene According to.

The operation principle of the utility model is：

When the utility model at work, fruit to be checked is positioned on bracket by operating personnel, and wavelength is 760nm's later LED7 and the LED8 that wavelength is 810nm alternately shine and examine.It is poly- by object lens convex lens that monochromatic source sends out a branch of incident light Light is directional light, is irradiated into and is placed on bracket in fruit, then transmits fruit, using imaging convex lens and is focused convex Lens light gathering, then light irradiation on the photosensor.According to the power of monochromatic source incident light and photo-sensor signal Power can analyze whether fruit has black heart, and may determine that the grade of black heart disease.

In this detector, by source of parallel light, beam condensing unit and photoelectric sensor are used cooperatively, and replace original artificial detection Range estimation empirical data, greatly improve the accuracy and repeatability of detection, detection is quick, and service life is long, can push away extensively Extensively to relevant food safety detection unit, food security research institution, supermarket etc.；It can also be used as the conduct of vast application family The maturity and effectively classification that professional equipment judges fruit, direct Data Detection is provided for fruit harvesting, listing and storage.

Claims (3)

1. a kind of fruit black heart detector, it is characterised in that：Including the source of parallel light projected in the horizontal direction, in the directional light The relative spacing of source projecting direction is equipped with a beam condensing unit, which is equipped with light backwards to the corresponding position of source of parallel light Electric transducer；The source of parallel light includes lamp holder and object lens convex lens, the lamp holder in the end face of bracket homonymy along level side The LED that multiple wavelength are 760nm and the LED that wavelength is 810nm are installed to staggeredly interval, it is perpendicular between the lamp holder and bracket The object lens convex lens is directly installed；Installation temperature capacity checking device can be also assisted, is examined according to the temperature braking correction at scene is examined Test data.

2. a kind of fruit black heart detector according to claim 1, it is characterised in that：The source of parallel light is filled with optically focused Bracket is installed, for placing fruit in the bracket between setting.

3. a kind of fruit black heart detector according to claim 1 or 2, it is characterised in that：The beam condensing unit includes Vertically-mounted imaging convex lens, it is vertically-mounted between the imaging convex lens and photoelectric sensor induction end to have focusing convex lens Mirror.