CN215448978U

CN215448978U - A appearance is examined soon to portable near infrared spectrum for inside quality of fruit detects

Info

Publication number: CN215448978U
Application number: CN202121094083.7U
Authority: CN
Inventors: 朱向荣; 李高阳; 张珮; 单杨
Original assignee: HUNAN AGRICULTURAL PRODUCTS PROCESSING INSTITUTE
Current assignee: HUNAN AGRICULTURAL PRODUCTS PROCESSING INSTITUTE
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-07
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a portable near infrared spectrum fast detector for detecting the internal quality of fruits, which comprises a host, a probe and a first optical fiber, wherein the host comprises a light source, a detector and a light splitter, the light splitter is used for splitting the light source into two paths, one path is connected with the probe through the first optical fiber, the other path is connected with the detector through a second optical fiber, and the probe is used for feeding detected information back to the detector. According to the fruit detection device, the light source energy is divided into two paths by the light splitter, one path collects samples through the first optical fiber, so that damage to fruits caused by direct irradiation of the light source is avoided, and meanwhile, the light source energy meets the detection requirement; the other path collects reference energy of near infrared spectrum through a second optical fiber. Sample collection and reference collection are automatically realized in the host machine, manual collection and reference operation are not needed, and meanwhile, because the light source is conveyed by the optical fiber, direct injection of fruits cannot be realized, so that fruit samples cannot be damaged.

Description

A appearance is examined soon to portable near infrared spectrum for inside quality of fruit detects

Technical Field

The utility model relates to fruit detection equipment, in particular to a portable near infrared spectrum fast detector for detecting the internal quality of fruits.

Background

The quality detection of fruits requires the detection of various property parameters. At present, all indexes of fruit detection instruments in a laboratory are measured by adopting special technologies and instruments, the workload is large, the types of instruments are multiple, and the defects of damage to fruits exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a portable near infrared spectrum fast detector for detecting the internal quality of fruits, which divides a light source into two paths, can automatically realize sample collection and reference collection in a host, does not need manual collection and reference operation, and does not damage the fruits.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a portable near infrared spectroscopy short-term test appearance for inside quality detection of fruit, includes host computer, probe and first optic fibre, the host computer includes light source, detector and beam splitter, the beam splitter is used for dividing into two the tunnel with the light source, and one way is connected with the probe through first optic fibre, and another way is connected with the detector through second optic fibre, the probe is used for feeding back the information that detects to the detector.

As a further improvement of the above technical means, the first optical fiber is an optical fiber bundle composed of a plurality of glass fibers.

As a further improvement of the above technical solution, the second optical fiber is a single core optical fiber.

As a further improvement of the above technical solution, the light source is a halogen lamp.

As a further improvement of the technical scheme, the detector is a micro fiber spectrometer.

Compared with the prior art, the utility model has the advantages that:

according to the near infrared spectrum fast detector, the light source energy is divided into two paths through the light splitter, one path of light is used for collecting samples through the first optical fiber, damage to fruits caused by direct irradiation of the light source is avoided, and meanwhile the light source energy meets the detection requirement; the other path collects the reference energy of the near infrared spectrum (light source) through a second optical fiber. The sample collection and the reference collection are automatically realized in the host, and the collection and reference operation is not required to be manually carried out. Through adopting near infrared spectroscopy technique, directly carry out nondestructive analysis to the inside quality of fruit and detect, realize the short-term test and the analysis of the fruit sample that awaits measuring, because the light source is carried by optic fibre, can not penetrate fruit directly simultaneously to can not harm the fruit sample.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic diagram of the internal structure of the host of the present invention.

Fig. 3 is a schematic diagram of the optical path in the present invention.

FIG. 4 is a schematic view of the detection process of the present invention.

The reference numerals in the figures denote:

1. a host; 2. a probe; 3. a first optical fiber; 4. a light source; 5. a detector; 6. a light splitter.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples of the specification.

As shown in fig. 1 to 4, the portable near infrared spectrum fast detector for detecting the internal quality of fruits of the present embodiment includes a host 1, a probe 2 and a first optical fiber 3, the host 1 includes a light source 4, a detector 5 and a beam splitter 6, the beam splitter 6 is used for dividing the light source 4 into two paths, one path is connected with the probe 2 through the first optical fiber 3, the probe 2 uses the light source 4 to collect information of sample fruits and feeds the information back to the detector 5; the other path is connected to the detector 5 through a second optical fiber. The light source 4 is preferably near infrared light.

When the fruit detector is used, the head of the probe 2 is covered on a fruit to be detected by the handheld probe 2, a button on the detection host 1 is clicked to obtain detection information, the collected information is fed back to the detector 5 to process data, one path of light source 4 is used for collecting sample energy, the other path of light source 4 is fed back to the detector 5 through a second optical fiber to collect energy of the light source, namely the detector 5 receives the sample energy of the sample fruit and reference energy of the light source 4, the sample energy generates a sample energy spectrum, the reference energy generates a reference energy spectrum, and the spectrum is calculated, predicted and analyzed to obtain a final prediction result, and the result can be displayed on a display of the host 1.

According to the near infrared spectrum fast detector, light source energy is divided into two paths through the light splitter 6, one path collects samples through the first optical fiber, damage to fruits caused by direct irradiation of a light source is avoided, and meanwhile the light source energy meets the detection requirement; the other path collects the reference energy of the near infrared spectrum (light source 4) through a second optical fiber. The sample collection and the reference collection are automatically realized in the main machine 1, and the collection and reference operation is not required to be manually carried out. Through adopting near infrared spectroscopy technique, directly carry out nondestructive analysis to the inside quality of fruit and detect, realize the short-term test and the analysis of the fruit sample that awaits measuring, because light source 4 is carried by optic fibre, can not penetrate fruit directly simultaneously to can not harm the fruit sample.

It should be noted that the reference information only needs to be collected once (or collected when other reference information needs to be collected again), and the sample information needs to be collected continuously. Consequently, set up a separation blade and the rotatory motor of drive separation blade through spectrometer 6, through software control change over switch, thereby the rotation of control motor drive separation blade, the switching of two way light paths promptly, for example when gathering the reference, control change over switch, motor drive separation blade blocks the light path of gathering the sample, another way gathers the light path of reference and conveys to detector 5 in, later controls change over switch again, motor drive separation blade blocks the light path of gathering the reference, the light path of gathering the fruit sample normally transmits to probe 2, carry out sample collection.

In this embodiment, the main body 1 includes a display, a power supply, and the like, in addition to the light source 4, the detector 5, and the beam splitter 6, and is provided with a power key. The instrument needs to be preheated and parameters set before use. The parameter setting mainly comprises reference, integration time during sample measurement and an analysis model selected during prediction analysis. The predictive analysis comprises the predictive analysis of the sample absorbance spectrum by using an analysis model to obtain a qualitative and quantitative analysis structure of the sample.

In this embodiment, the first optical fiber 3 is composed of 80 glass fibers of 200 μm. The energy of the light source 4 is transmitted to the surface of the sample fruit without losing a large amount of energy. One part of the glass fibers transmits the light source to the probe, and the other part returns the collected information to the detector 5.

In this embodiment, the second optical fiber is a single-core optical fiber, i.e., a single glass fiber, and is used for feeding back information of the light source 4 to the detector 5.

In this embodiment, the light source 4 is a halogen lamp, and provides a near-infrared light source.

In this embodiment, the detector 5 is a micro fiber spectrometer. Preferably a USB2000+ micro fiber optic spectrometer with a wavelength range of 350-1100 nm. The device consists of a powerful 2-MHz analog-to-digital (A/D) converter, a programmable module, a 2048-pixel CCD array detector and a high-speed USB2.0 interface. When the USB2000+ is connected to the computer through the USB2.0 interface, the user can capture and store a complete spectral image into the memory every millisecond (i.e., 1000 spectral images per second). USB2000+ is well suited for chemical, biological, and other applications requiring high speed processing.

The spectrum analyzer designed based on the near infrared spectrum analysis technology and the chemometrics analysis model technology is suitable for fast nondestructive qualitative and quantitative analysis of fruit quality. The instrument has a compact internal structure, is provided with an intelligent optical calibration system, and improves the stability of fruit measurement results. The near infrared analysis technology can achieve the aims of simultaneously and rapidly detecting multiple parameters, designing a structure that a light source does not directly irradiate a sample, and detecting the required sample without damage. The instrument of the utility model also has the characteristics of small volume, light weight, portability and capability of taking site and laboratory into consideration; the instrument possesses the self-checking function, and the user can know instrument running state in real time, guarantees that the measuring result is more credible each time.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides a portable near infrared spectroscopy short-term test appearance for inside quality detection of fruit which characterized in that: the optical fiber detection device comprises a host (1), a probe (2) and a first optical fiber (3), wherein the host (1) comprises a light source (4), a detector (5) and a light splitter (6), the light splitter (6) is used for dividing the light source (4) into two paths, one path is connected with the probe (2) through the first optical fiber (3), the other path is connected with the detector (5) through a second optical fiber, and the probe (2) is used for feeding detected information back to the detector (5).

2. The portable near infrared spectrum fast detector for detecting the internal quality of fruit according to claim 1, wherein: the first optical fiber (3) is an optical fiber bundle composed of a plurality of glass fibers.

3. The portable near infrared spectrum fast detector for detecting the internal quality of fruit according to claim 2, wherein: the second optical fiber is a single-core optical fiber.

4. The portable near infrared spectrum fast detector for detecting the internal quality of the fruit according to any one of claims 1 to 3, wherein: the light source (4) is a halogen lamp.

5. The portable near infrared spectrum fast detector for detecting the internal quality of the fruit according to any one of claims 1 to 3, wherein: the detector (5) is a micro fiber spectrometer.