JP2002107297A - Produce internal quality evaluation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized, inexpensive, and extremely convenient produce internal quality evaluation device which facilitates the introduction even by a small-scale trader, the change of its setting position, and the measurement to shorten the measurement time. SOLUTION: This portable produce internal quality evaluation device settable on a table comprises a mount table 3 for placing produce A; light sources 4 and 4 for illuminating the produce A; a spectral detector 29 for spectrally dividing the transmitted light C transmitted by the produce A to detect the light intensity; an A/D converter 30 for converting an analog detection signal to a digital detection signal; an arithmetic processing part 31 for calculating and evaluating a quality evaluation value such as sugar content, ripening degree, etc., on the basis of the detection signal; a display panel 36 for displaying the quality evaluation value such as sugar content, ripening degree, etc.; and a detecting means for detecting whether the produce A is placed on the mount table 3. When the detecting means detects that the produce A is placed on the mount table 3, measurement is automatically started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for evaluating the internal quality of fruits and vegetables, which non-destructively measures quality evaluation quantities such as sugar content and ripeness of the fruits and vegetables and evaluates the internal quality.

[0002]

BACKGROUND ART Conventionally, fruits and vegetables are irradiated with light from a light source,
There is known a method of non-destructively measuring and evaluating the internal quality of fruits and vegetables by spectrally analyzing the reflected light and transmitted light. And, as an apparatus to which this method is applied, it is installed on the floor of an examination room or the like, and the fruits and vegetables are placed on the mounting table and measured,
Apparatus for evaluating (see Japanese Patent Application Laid-Open No. H11-125593, etc.) and apparatus for measuring and evaluating fruits and vegetables placed on a sorting line, etc.
No. 37480).

[0003]

However, since all of the above-mentioned conventional apparatuses are large and expensive, a small-scale business is difficult to introduce in terms of installation location, purchase cost, and the like. . In addition, once installed, the installation location cannot be easily changed, which is inconvenient. Furthermore, a device for placing and measuring fruits and vegetables on a mounting table is provided with a cover for shielding disturbance light, and automatic measurement is performed when the cover is closed. Closing was cumbersome and the measurement took time.

[0004] The present invention has been made in view of such a conventional problem, and its object is to provide:
To provide an extremely convenient fruit and vegetable internal quality evaluation device that is small and inexpensive, can be easily introduced even by a small business, can easily change the installation location, can easily measure, and can shorten the measurement time. It is in.

[0005]

In order to achieve the above object, an apparatus for evaluating the internal quality of fruits and vegetables according to the present invention is characterized in that a transmitted light detection hole is formed, and a placing table for placing fruits and vegetables is opposed to both sides of the placing table. A light source that irradiates fruits and vegetables, a spectrometer / detector that detects the light intensity by splitting the transmitted light passing through the transmitted light detection hole through the fruits and vegetables, and converts the analog detection signal to a digital detection signal An A / D converter, a calculation processing unit for calculating and evaluating the quality evaluation amount such as sugar content and ripeness based on the detection signal, a display panel for displaying the quality evaluation amount such as sugar content and ripeness, It is a vegetable and vegetable internal quality evaluation device which comprises a detecting means for detecting whether or not fruits and vegetables are placed on the table, and which can be installed on a table and which can be carried. When the detection means detects, the measurement is automatically performed. Characterized in that it started.

It is preferable that the transmitted light detection hole and the spectroscopic / detector are connected by an optical fiber because stray light can be prevented from entering and the measurement accuracy can be improved.

[0007] If the mounting table is formed with a fitting recess for placing fruits and vegetables, and the transmitted light detection hole reaching the bottom surface is formed in the fitting recess, the fruits and vegetables can be stably held in the fitting recess, thereby ensuring a reliable operation. This is preferable because measurement can be performed.

Further, if the holding member made of sponge rubber is provided in the fitting recess of the mounting table, the flexibility of the holding member makes the holding member adhere to the fruits and vegetables, thereby preventing stray light from entering the transmitted light detection hole. Therefore, measurement accuracy can be improved, which is preferable.

If the spectrometer / detector divides the transmitted light transmitted through the fruits and vegetables into a number of frequency regions and detects the light intensity in each frequency region, various quality evaluation amounts are obtained from the light intensity in each frequency region. Can be calculated, which is preferable.

It is preferable to provide a shutter opening / closing device including a shutter for blocking the light passing through the transmitted light detection hole and a shutter driving device for moving the shutter, since the measurement at the time of shading can be automated.

If a transmission standard setting device including a transmission standard that transmits light passing through the transmitted light detection hole and a transmission standard driving device that moves the transmission standard is provided, the standard measurement can be automated. It is possible and preferable.

As the detecting means, a position sensor or a weight sensor can be adopted. Further, the intensity of transmitted light can be measured preliminary and the detected light intensity can be compared. If the measurement is automatically started when it is detected that the device is mounted, the operator can easily perform the measurement without performing any troublesome operation, and the measurement time can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the fruit and vegetable internal quality evaluation apparatus of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, the fruit and vegetable internal quality evaluation device 1 of the present invention can be installed on a desk and can be carried, and is a small and lightweight device having a width of about 530 mm, a depth of 343 mm, and a height of 280 mm. The mounting table 3 is disposed substantially at the center of the housing 2, and the light sources 4 and 4 are disposed on both sides of the mounting table 3 so as to face each other.

As shown in FIG. 4, the mounting table 3 has a fitting recess 3a having an inner surface formed in an inverted conical curved surface at an upper portion, and a transmitted light detecting hole reaching the bottom at a substantially central portion of the fitting recess 3a. 3b is formed. An inverted conical annular holding member 5 made of sponge rubber is fitted into the fitting concave portion 3a of the mounting table 3,
The holding material 5 is made of an ethylene-propylene terpolymer (EP
DM) or the like, and a semi-closed / semi-continuous foam is formed from synthetic rubber to form a porous structure. The fitting recess 3a is formed in the mounting table 3, and the holding material 5 made of sponge rubber is fitted into the fitting recess 3a. Since the fruits and vegetables A and the holding material 5 are brought into close contact with each other and stray light can be prevented from entering the transmitted light detection holes 3b, measurement can be performed stably and with high accuracy.

As the light sources 4, 4, a halogen lamp is used, and a slit plate 6 and lenses 7, 8 are arranged in front of the light sources 4, 4, as shown in FIG. The slit plate 6 has a substantially semicircular slit 6a, and the lenses 7 and 8 are an aspheric condenser lens and a spherical plano-convex lens, and have curved surfaces facing each other. In this manner, the light amount of the irradiation light B is sufficiently ensured, the light downward is diffused while appropriately removing the downward light, and the irradiation light B is irradiated on both sides of the fruit and vegetables A in a state where the fruit and vegetables A are placed on the mounting table 3. It is made to hit.

A temperature sensor 9 composed of a thermistor is disposed between the light source 4 and the slit plate 6. By detecting the temperature around the light source 4 by the temperature sensor 9, it is possible to automatically calculate the time required for the warm-up operation performed to stabilize the measurement accuracy of the fruit and vegetable internal quality evaluation device 1. Further, it is possible to notify whether or not the temperature around the light source 4 has reached a safe temperature when replacing the halogen lamp or the like.

A shutter opening / closing device 10 and a transmission standard setting device 11 are provided in the housing 2 directly below the mounting table 3.

FIG. 6 and FIG.
As shown in FIG. 2, the shutter 12 includes a shutter driving device 13 including a rotary solenoid, a fixing member 14, and a position detection plate 15, and the shutter 12, the position detection plate 15
Is fixed to a shaft 13a of the shutter driving device 13 via a fixing member 14. The shutter 12 is a thin plate coated in black and is rotated by a predetermined angle by a shutter driving device 13 so as to block the transmitted light C passing through the transmitted light detection hole 3b. Further, position sensors 16a and 16b are provided, and by detecting the position of the position detection plate 15, it is notified whether or not the shutter 12 is closed.

FIG. 6 and FIG.
As shown in the figure, the transmission standard bodies 17 and 18, the spacer 19,
Transmission unit drive unit 2 consisting of a rotary solenoid
0, a support member 21, and a position detection plate 22, and the transmission standard bodies 17, 18 are installed on the support member 21 via a spacer 19, and the position detection plate 22 is provided on the transmission standard body via the support member 21. The drive unit 20 is fixed to a shaft 20a. The transmission standard 17 is a silicon glass plate whose upper surface is sand-blasted and has a matte surface, and functions as a diffusion plate that does not give directionality to the transmitted light C. The transmission standard 18 has a vapor-deposited surface made of chromium on the upper surface. And functions as an adjusting plate for appropriately adjusting the amount of transmitted light C. The transmission standard bodies 17 and 18 are rotated by a predetermined angle by the transmission standard body driving device 20 and have the same characteristics as the light transmitted through the fruit and vegetable A as the test object, by transmitting the transmission light C passing through the transmission light detection hole 3b. It is designed to be converted to what you have. Position sensors 23a and 23b are provided, and by detecting the position of the position detection plate 22, it is notified whether or not the transmission standard bodies 17 and 18 are set.

As shown in FIGS. 2 and 8, the fruit and vegetable internal quality evaluation device 1 is provided with a calibration cover 24 used when the device is periodically calibrated. The calibration cover 24 has a reflection standard body 26 fixed to an inner lower surface of a lid cover 25. The reflection standard 26 is a thin plate formed on a curved surface and painted white,
Is located above the mounting table 3, and reflects the irradiation light B from the light sources 4 and 4 to guide the light B to the transmitted light detection hole 3b.

A light receiving member 27 is provided below the transmitted light detection hole 3b.
The light receiving member 27 is provided with an optical fiber 28.
Is connected, and the other end is connected to the spectroscopic / detector 29, thereby guiding the transmitted light C to the spectroscopic / detector 29. In this way, if the transmitted light detection hole 3b and the spectroscopic / detector 29 are connected by the optical fiber 28, stray light can be prevented from entering, so that measurement accuracy can be improved.

As shown in FIG.
Detector 29, A / D converter 30, two PC boards 31a,
Arithmetic processing unit 31 composed of 31b is provided. Spectroscopy
The detector 29 divides the transmitted light C that has passed through the optical fiber 28 into a number of frequency regions, detects the light intensity in each frequency region, and outputs it as a voltage signal. A /
The D converter 30 converts an analog detection signal from the spectroscopic / detector 29 into a digital detection signal. The arithmetic processing section 31 calculates quality evaluation amounts such as sugar content and ripeness based on the detection signals, evaluates internal quality, and executes various data processing, input / output control, and the like.

The housing 2 is covered with upper and lower covers 32 and 33. On the front side of the upper surface of the upper cover 32, as shown in FIG. 9, a measurement button 34 and various display lights 35 composed of light emitting diodes (LEDs). And a display panel 36 composed of a liquid crystal display (LCD). As the indicators 35, a power indicator 35a, an error indicator 35b, and a measurement preparation completion indicator 35c are provided. Display panel 36
The following setting modes, quality evaluation amounts such as sugar content, ripeness, nectar amount, browning degree, etc., error codes and the like are displayed in characters or numerical values.

As shown in FIG. 2, an openable and closable operation panel 37 is provided at the center of the front surface of the lower cover 33. As shown in FIG. 38, environment setting button 39, numeric keypad 40,
Various operation buttons such as a function key 41 are provided. The mode selection button 38 includes a fruit selection button 38a for selecting a kind of fruit such as apple and mandarin orange, and a variety selection button 38 for selecting a kind of fruit such as Fuji and Kunimitsu.
b, a backward button 38c for returning to the previous screen, a scroll button 38d for scrolling on the screen, and a decision button 38e for deciding the mode are provided. As the environment setting button 39, a menu button 39a for changing a measurement mode, a date mode, and the like, and a mute button 39b for muting various error buzzers are provided. It is to be noted that automatic measurement or manual measurement can be selected by changing the measurement mode.

Irradiation light passing holes 32a, 32a are formed on both inner side surfaces of the central depression portion of the upper cover 32, and irradiation light B from the light sources 4, 4 passes from the irradiation light passage holes 32a, 32a. Vegetables A that came out of the cover 32 and were placed on the mounting table 3
Is to hit. Light source covers 42, 42 which can be freely attached are provided on both sides of the upper cover 32, and the light sources 4, 4 can be easily replaced by removing the light source covers 42, 42. .

As shown in FIG. 4, a position sensor 43 composed of a photosensor is disposed at the rear of the fruit and vegetable internal quality evaluation device 1. As shown in FIGS.
A through hole 32b for detection is formed in the rear inner side surface of the central depression portion of No. 2. The position sensor 43 has a configuration as shown in FIG. 11, and projects infrared light emitted from the light emitting diode 44 near the upper portion of the mounting table 3 through the detection passage hole 32b.
By receiving the reflected light with the phototransistor 45, it is possible to detect whether or not the fruit or vegetable A is mounted on the mounting table 3. Note that the detection passage hole 32b is formed at a position where the infrared projection optical path is not blocked by the rear side surface of the calibration cover 24, and the detection distance of the position sensor 43 is considerably shorter than the front side surface of the calibration cover 24. The distance is set.

Next, the fruit and vegetable internal quality evaluation apparatus 1 of the present invention
Regarding the operation and effect of, with reference to FIG. 12 and FIG.
It will be explained together with the method of use.

First, when the power is turned on by pressing a power button (not shown) provided on the back of the fruit and vegetable internal quality evaluation apparatus 1, the power indicator light 35a is turned on, and the light sources 4 and 4 are turned on.
Starts emitting light, and the display panel 36 indicates that the apparatus is in the warm-up operation state.

When the temperature sensor 9 detects that the temperature around the light sources 4 and 4 has reached a predetermined temperature while continuing the warm-up operation state, the display panel 36 indicates that the warm-up operation has been completed. Then, the shutter driving device 13 automatically operates, the shutter 12 rotates, and as shown in FIG. 14, the external light including the irradiation light B from the light sources 4 and 4 is blocked, and the display panel 36 It is displayed that the measurement state is at the time of shading. In the measurement state at the time of shading, the internal residual voltage in the optical fiber 28, the spectral / detector 29, and the like is measured by the spectral / detector 29. Here, the frequency domain is 256
Since the division is performed, internal residual voltage data of D (1) to D (256) is obtained.

When the measurement at the time of shading is completed, the display panel 36
Indicates that the measurement at the time of shading is completed, and an instruction to install the calibration cover 24 is displayed.

When the operator installs the calibration cover 24 and the position sensor (not shown) detects this, the transmission standard drive 20 is automatically activated, and the transmission standards 17 and 18 are transmitted.
Rotates, and as shown in FIG. 15, the irradiation light B from the light sources 4 and 4 is reflected by the reflection standard body 26, and the transmitted light detection hole 3b
Then, the light passes through the transmission standard bodies 17 and 18 to become transmitted light C, passes through the optical fiber 28, is guided to the spectroscopic / detector 29, and the display panel 36 indicates that the standard body measurement state is being obtained. In the standard body measurement state, the transmitted light C is divided into a number of frequency regions by the spectroscope / detector 29, and the light intensity for each frequency region is measured. Here, since the frequency domain is divided into 256, light intensity data of R (1) to R (256) is obtained.

When the standard body measurement is completed, the measurement preparation completion indicator light 35c is turned on, the display panel 36 indicates that the standard body measurement is completed, and indicates that the fruits and vegetables can be measured.

The environment setting button 3 on the operation panel 37
When the automatic measurement mode is selected by the menu button 39a of No. 9, the operator separates the calibration cover 24,
When the fruits and vegetables A are placed on the mounting table 3, the position sensor 43 detects that the fruits and vegetables A are mounted on the mounting table 3, and automatically starts the measurement. Then, as shown in FIG. 16, the irradiation light B from the light sources 4 and 4 is transmitted through the fruit and vegetable A and transmitted light C
Then, the light passes through the transmitted light detection hole 3b and the optical fiber 28, is guided to the spectrometer / detector 29, and the display panel 36 indicates that the fruits and vegetables are being measured. In the fruit and vegetable measurement state, the transmitted light C is divided into a number of frequency regions by the spectral / detector 29, and the light intensity of each frequency region is measured. Here, since the frequency domain is divided into 256,
The light intensity data of S (1) to S (256) is obtained.

On the other hand, when the manual measurement mode is selected in advance by the menu button 39a of the environment setting button 39 of the operation panel 37, the operator separates the calibration cover 24 and places the fruits and vegetables A on the mounting table 3. Place and measure button 34
Pressing starts the measurement.

When the measurement of fruits and vegetables is completed, the arithmetic processing unit 31
The light intensity data S (1) to S (256), R
(1) to R (256), internal residual voltage data D (1) to
From D (256), the absorbance of each fruit and vegetable A in each frequency region is calculated as ABS (1) to ABS (256). And these absorbance data ABS (1) to ABS
From (256), quality evaluation amounts such as sugar content, ripeness, denseness, browning degree, etc. are calculated or determined, and displayed on the display panel 36 as characters or numerical values along with the type and variety of fruit as shown in FIG. You.

A weight sensor may be used instead of the position sensor 43 as means for detecting whether or not the fruits and vegetables A are mounted on the mounting table 3. In the case of employing a weight sensor, for example, as shown in FIG. 18, an elastic member 46 such as soft rubber or foamed plastic is interposed between the bottom surface of the mounting table 3 and the upper surface of the housing 2, and Weight sensor 4 comprising a load cell in a notch 3c formed at the lower end of
7, and the bottom surface of the mounting table 3 is brought into contact with the load receiving shaft 47 a of the weight sensor 47. According to such a configuration, by detecting the load applied to the load receiving shaft 47a, it is possible to detect whether or not the fruit or vegetable A is mounted on the mounting table 3.

As a means for detecting whether or not the fruits and vegetables A are mounted on the mounting table 3, it is not particularly necessary to use any sensor. When the fruits and vegetables can be measured, FIG.
As shown in FIG. 20, the intensity of the transmitted light C may be preliminarily measured at a relatively short time T _A every predetermined period τ _A.
Here, the time T _A is about 10 msec, and the period τ _A is 10
msec to about 1 sec. Then, shown is the detected value of the light intensity P _A of a predetermined wavelength in the preliminary measurement, usually the most efficient light intensity is high value in detecting 7
Select a wavelength in the range of 00-850 nm.

[0039] According to this method, when a fruit or vegetable measurable state, as shown in FIGS. 19 and 20, the intensity of the transmitted light C are preliminarily measured by detecting the light intensity P _A of a predetermined wavelength The current light intensity P _An is compared with the previous light intensity P _An-1 . Since the light intensity P _B when the vegetables and fruits A is placed should considerably smaller than the light intensity P _A when not _{mounted, | P An -P An-1} | is by whether more than a predetermined value P _S It is possible to detect whether or not the fruits and vegetables A are mounted on the mounting table 3.

| P _An -P _An-1 | is a predetermined value P _S
If less than, the preliminary measurement is repeated and | P _An -P
_An,-1 | when is a predetermined value or more P _S terminates the preliminary measurement, so as to automatically perform the measurement of the full-scale internal quality. The full-scale measurement is started after a time τ _B after the preliminary measurement is completed, and the measurement time TB is 100 msec to 1 sec.
Is set as appropriate within the range.

[0041]

The apparatus for evaluating the internal quality of fruits and vegetables according to the present invention comprises a mounting table, a light source, a spectral / detector, an arithmetic processing unit, an operation button,
Since the display panel and the like are stored compactly and can be installed on a table and can be carried, they are small and inexpensive, and can be easily introduced by small businesses. Further, the installation location can be easily changed, which is extremely convenient.

Further, if the detection means detects whether or not fruits and vegetables are mounted on the mounting table and automatically starts the measurement, the operator can easily perform the operation without troublesome operation. Measurement can be performed and measurement time can be reduced.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a fruit and vegetable internal quality evaluation device of the present invention.

FIG. 2 is an external perspective view of the fruit and vegetable internal quality evaluation device of the present invention in a state where an operation panel is opened and a calibration cover is installed.

3A is a plan view and FIG. 3B is a front view of the appearance of the fruit and vegetable internal quality evaluation device of the present invention.

4A is a plan view and FIG. 4B is a front view of the inside of the fruit and vegetable internal quality evaluation device of the present invention.

5 (A) is a front view, FIG. 5 (B) is a plan view, and FIG. 5 (C) is a side view near the light source of the fruit and vegetable internal quality evaluation device of the present invention.

FIG. 6A is a plan view of a shutter opening / closing device and a transmission standard body setting device of the fruit and vegetable internal quality evaluation device of the present invention.
(B) is a front view.

FIG. 7 is an exploded view of a shutter opening / closing device and a transmission standard body setting device of the fruit and vegetable internal quality evaluation device of the present invention.

8 (A) is a plan view, FIG. 8 (B) is a front view, FIG. 8 (C) is a side view, and FIG. 8 (D) is a sectional view of the calibration cover of the fruit and vegetable internal quality evaluation device of the present invention.

FIG. 9 is a plan view of a display panel of the fruit and vegetable internal quality evaluation device of the present invention.

FIG. 10 is a plan view of an operation panel of the fruit and vegetable internal quality evaluation apparatus of the present invention.

FIG. 11 is a block diagram of a position sensor circuit of the fruit and vegetable internal quality evaluation apparatus of the present invention.

FIG. 12 is a diagram illustrating a fruit and vegetable internal quality evaluation device according to the present invention.
FIG. 7 is a process chart showing a quality evaluation procedure when an automatic measurement mode is set.

FIG. 13: In the fruit and vegetable internal quality evaluation device of the present invention,
FIG. 4 is a process chart showing a quality evaluation procedure when a manual measurement mode is set.

FIG. 14 is a schematic explanatory view showing a measurement state at the time of shading in the fruit and vegetable internal quality evaluation apparatus of the present invention.

FIG. 15 is a schematic explanatory view showing a standard body measurement state in the fruit and vegetable internal quality evaluation apparatus of the present invention.

FIG. 16 is a schematic explanatory view showing a fruit and vegetable measurement state in the fruit and vegetable internal quality evaluation device of the present invention.

FIG. 17 is a plan view showing a state in which the quality evaluation amount is displayed on the display panel of the fruit and vegetable internal quality evaluation device of the present invention.

18A and 18B are a plan view and a front view, respectively, in the vicinity of a mounting table of the fruit and vegetable internal quality evaluation device when a weight sensor is employed as a detection unit.

FIG. 19 is a process diagram showing a procedure for detecting whether or not fruits and vegetables are placed in a case where the light intensity is preliminarily measured as the detection means.

FIG. 20 is an explanatory diagram showing a measurement time and a cycle and a measurement result when light intensity is preliminarily measured as a detection means.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fruit and vegetable internal quality evaluation device 3 mounting table 3 a fitting recess 3 b transmitted light detection hole 4 light source 5 holding material 10 shutter opening and closing device 11 transmission standard body setting device 12 shutter 13 shutter driving device 17 transmission standard body 18 transmission standard body 20 transmission standard body Driving device 28 Optical fiber 29 Spectroscopic / detector 30 A / D converter 31 Operation processing unit 36 Display panel 43 Position sensor 47 Weight sensor A Fruit and vegetable C Transmitted light

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[Procedure amendment]

[Submission date] April 17, 2001 (2001.4.1
7)

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Continued on front page F term (reference) 2G059 AA01 BB11 CC20 DD12 DD15 EE01 FF08 GG03 GG10 HH01 HH06 JJ01 JJ11 JJ17 JJ23 JJ26 KK01 LL04 MM01 MM05 MM09 MM14 PP04

Claims (10)

[Claims] 1. A transmission light detection hole is formed, a mounting table for mounting fruits and vegetables, a light source for irradiating fruits and vegetables disposed opposite to both sides of the mounting table, and a transmission light detection hole for transmitting fruits and vegetables. A spectrometer / detector that separates the transmitted light that has passed through and detects the light intensity, an A / D converter that converts an analog detection signal into a digital detection signal, and quality evaluation such as sugar content and ripeness based on the detection signal The amount is calculated and calculated, an arithmetic processing unit, a sugar content, a display panel for displaying a quality evaluation amount such as ripeness, and a detection unit for detecting whether or not fruits and vegetables are placed on the mounting table, A vegetable and vegetable internal quality evaluation device which can be installed on a table and which can be carried, wherein the detecting means detects that a vegetable or vegetable is placed on the mounting table, and automatically starts measurement. Quality evaluation device. 2. The apparatus for evaluating the internal quality of fruits and vegetables according to claim 1, wherein the transmitted light detection hole and the spectral / detector are connected by an optical fiber. 3. The mounting table according to claim 1, wherein the mounting table has a fitting recess for placing fruits and vegetables, and a transmission light detection hole reaching the bottom surface in the fitting recess. Fruit and vegetable internal quality evaluation device. 4. The apparatus for evaluating the internal quality of fruits and vegetables according to claim 1, wherein the mounting table is provided with a holding member made of sponge rubber in a fitting recess. 5. The apparatus according to claim 1, wherein the spectrometer / detector divides the transmitted light transmitted through the fruits and vegetables into a number of frequency regions and detects the light intensity in each frequency region. An internal quality evaluation device for fruits and vegetables according to the description. 6. The shutter according to claim 1, further comprising a shutter opening / closing device including a shutter for blocking light passing through the transmitted light detection hole and a shutter driving device for moving the shutter. Fruit and vegetable internal quality evaluation device. 7. A transmission standard setting device comprising: a transmission standard that transmits light passing through the transmitted light detection hole; and a transmission standard driving device that moves the transmission standard. The fruit and vegetable internal quality evaluation device according to claim 1. 8. The apparatus according to claim 1, wherein said detecting means is a position sensor. 9. The apparatus according to claim 1, wherein said detecting means is a weight sensor. 10. The apparatus for evaluating the internal quality of fruits and vegetables according to claim 1, wherein said detecting means measures the intensity of transmitted light in a preliminary manner and compares the detected light intensities.