JP5086921B2 - Agricultural product internal quality measuring device - Google Patents

Description

The present invention provides a light projecting / receiving unit including a light projecting unit that projects light onto a measurement object located at a measurement location, and a light receiving unit that receives light from the measurement object onto which light is projected from the light projecting unit. ,
A spectroscopic measuring unit including a spectroscopic unit that splits the light received by the light receiving unit and guided by the light guiding unit, and a light intensity detecting unit that detects the intensity of the light split by the spectroscopic unit for each wavelength; It is related with the internal quality measuring device of agricultural products provided.

  Such an internal quality measuring device for agricultural products (hereinafter sometimes simply referred to as an internal quality measuring device) measures the internal quality of agricultural products such as cereals and fruits and vegetables. The content of contained components, the taste of agricultural products, etc. are measured as internal quality.

By the way, in order to determine whether or not the cultivated agricultural product is suitable for harvesting, etc., it may be desired to measure the internal quality of the agricultural product at the cultivating location of the agricultural product. It is desired to be configured to be portable.
Then, as a conventional example in which the internal quality measuring device is configured to be portable, the light projecting unit of the light projecting unit and the light receiving unit of the light receiving unit are integrated as a light projecting / receiving unit in a form that can be supported by fingers, By integrating the light source of the light to be projected and the spectroscopic measurement unit etc. as a device main body unit that can be transported by a carriage, the light projecting / receiving unit and the device main body unit are configured separately, and these separate light projecting / receiving units And the main body are connected by an optical fiber for irradiating light emitted from the light source to the light projecting unit and a light receiving optical fiber (corresponding to a light guiding unit) for guiding the light received by the light receiving unit to the spectroscopic measuring unit. (For example, refer to Patent Document 1).

JP-A-9-67

By the way, the conventional internal quality measuring device can measure the internal quality of the fruit growing on the tree by positioning the light projecting / receiving unit to project and receive light on the fruit growing on the tree. Since the light projecting / receiving unit and the apparatus main body, which are separated from each other and connected by an optical fiber, are carried, they are difficult to carry.
And, when measuring the internal quality of agricultural products, it is not always necessary to measure them in the state they are born, but they may be harvested and measured once. An internal quality measuring device that is easy to carry around is desired.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an internal quality measuring device for agricultural products that is easy to carry.

The agricultural product internal quality measuring device according to the present invention includes a light projecting unit that projects light onto a measurement object located at a measurement location, and a light receiving unit that receives light from the measurement object onto which light is projected from the light projecting unit. A light emitting / receiving unit with
A spectroscopic measuring unit including a spectroscopic unit that splits the light received by the light receiving unit and guided by the light guiding unit, and a light intensity detecting unit that detects the intensity of the light split by the spectroscopic unit for each wavelength; Is provided,
In the first characteristic configuration, the light projecting / receiving unit and the spectroscopic measurement unit are provided in a form in which the spectroscopic measurement unit is positioned below the light projecting / receiving unit in a casing having a handle for supporting the suspension at the top. It is,
The handle is configured to include an arm portion extending upward from an upper portion of the casing and a grip portion attached to an upper end portion of the arm portion,
At least a part of the middle part in the longitudinal direction of the arm part is configured to protrude in a direction away from the back part of the casing,
In the state of projecting in the direction away from the back part of the bottom side part of the back part of the casing, a leg protrusion is provided,
The casing is configured to be installed in a supine posture with the handle arm and the leg protrusion as legs .

That is, the light projecting / receiving unit and the spectroscopic measuring unit are provided in a casing having a handle for supporting the suspension on the upper side, and the spectroscopic measuring unit is positioned below the light projecting / receiving unit. Thus, the casing can be carried in a suspended state.
That is, by incorporating the light projecting / receiving unit and the spectroscopic measurement unit into the casing, the internal quality measuring device is configured as an integrated object, and the casing can be carried in a state of holding the handle and supporting it in a suspended form. So it will be easy to carry around.
In addition, since the heavy spectral measurement unit is provided below the light projecting / receiving unit in the casing, the center of gravity of the casing can be positioned below the central part in the vertical direction. Since the position of the casing is stable when suspended or placed on the ground, it is easy to carry from this point of view, and it can be stably placed on the ground. is there.
Therefore, it has become possible to provide an internal quality measuring device for agricultural products that is easy to carry and that can be stably placed on the ground and used.
Furthermore, in addition to the normal posture with the handle positioned on the upper side, the casing can be placed in a supine posture with the handle arm and leg projections as legs.
Thus, for example, when the internal quality measuring device is used at a low position such as the ground of the cultivation place, if the casing is placed in a normal posture, the object to be measured is positioned at the measurement location or the internal quality is measured. It becomes possible to raise the operation position for internal quality measurement, such as operating a measuring device, and work for internal quality measurement can be performed easily.
In addition, when the internal quality measuring device is used at a position higher than the ground, such as on a table, the operation position for internal quality measurement can be prevented from becoming too high by placing the casing in a supine posture. This makes it possible to easily perform work for measuring internal quality.
Therefore, regardless of the installation height of the internal quality measuring device, the work for measuring the internal quality of the object to be measured can be easily performed using the internal quality measuring device.

In addition to the first feature configuration, the second feature configuration is
The casing is configured to include a casing body provided with an opening that opens at least one of a lateral side portion and a back portion, and a cover that can open and close the opening of the casing body.

That is, by opening the cover part and opening the opening part of the casing body, at least one of the lateral side part and the back part of the casing body is opened.
That is, when performing maintenance or repair of the light projecting / receiving unit or the spectroscopic measurement unit, the cover unit can be opened and the opening of the casing body can be opened, and the opening can be performed through the opening.
Therefore, it is possible to easily maintenance and repair.

In addition to the first or second feature configuration, the third feature configuration is
A control unit for obtaining internal quality information of the object to be measured based on detection information of the light intensity detection means is provided in the casing;
In a state where the display unit that displays the internal quality information obtained by the control unit as readable display information is installed in a normal posture in which the casing is positioned on the upper side, the display screen is the display screen Provided on the upper surface of the casing in a state of being inclined to the upper side toward the back side of the casing,
The control unit controls the display operation of the display unit so as to display the display information, and on the basis of a display state switching command, the control unit moves up and down according to a state in which the casing is installed in the normal posture. A normal display state in which the display information is displayed on the display unit with a direction determined, and a vertically inverted display state in which the display information is displayed on the display unit by being inverted up and down with respect to the normal display state. It is in the point which is comprised.

That is, the control unit obtains the internal quality information of the measurement object based on the detection information of the light intensity detection unit, and displays the obtained internal quality information on the display unit as readable display information.
In addition, the control unit determines a vertical direction corresponding to a state where the casing is installed in a normal posture based on the display switching command, and displays the display information on the display unit, and the normal display state. The display information is switched to the upside down display state in which the display information is displayed on the display unit.

Then, in a state where the display unit is installed in a normal posture with the handle positioned on the upper side, the display screen is provided on the upper surface of the casing in a state where the display screen is inclined upward toward the back side of the casing. Therefore, when the operator places the casing in a normal posture and the operator looks at the display unit while looking down diagonally downward in the front of the casing, the display screen is in a state of facing the operator. If the display information is displayed on the display unit in the normal display state, the display information is displayed on the display unit in the vertical direction suitable for viewing diagonally downward in front of the casing. As a result, the operator can easily recognize the display information displayed on the display unit.
Also, when using the internal quality measurement device at a position higher than the ground, such as on a table, place the casing in a supine posture and place the display unit in front of the handle in the casing in the supine posture. When viewed, the display screen of the display unit is in a state facing the operator, and when the display information is displayed on the display unit in the upside down display state, it is positioned in front of the handle in the casing in the supine posture. Thus, the display information is displayed on the display unit in an appropriate vertical direction for viewing the display unit. As a result, the operator can easily recognize the display information displayed on the display unit. .
Therefore, even at the inner part quality measuring apparatus in any orientation of the normal position and supine posture, it can now be displayed on the display unit display information such that a user can easily recognize.

The fourth feature configuration is in addition to any one of the first to third feature configurations,
The object storage container storing the object to be measured is configured such that it can be inserted into the measurement location through the container insertion opening provided on the front surface of the casing and can be taken out from the measurement location. It is in.

That is, the measurement object is stored in the measurement object storage container, and the measurement object storage container is inserted into the measurement location through the container insertion opening provided on the front surface of the casing. The internal quality of the measurement object can be measured in the stored state, and when the measurement of the internal quality is completed, the measurement object storage container is taken out from the measurement location.
In other words, even if the object to be measured, such as grain, is granular, such a granular object to be measured is stored in the object storage container, and the object storage container is measured through the container insertion opening. By inserting it at the location, the internal quality of the granular object to be measured can be easily measured.
Therefore , the internal quality of the granular object to be measured can be easily measured.

In addition to any one of the first to fourth feature configurations described above, the fifth feature configuration is
A battery for driving the apparatus is provided below the light projecting / receiving unit in the casing.

That is, since the battery for driving the device is provided in the casing, the internal quality measuring device can be operated by the battery for driving the device even in a place where there is no power source nearby.
In addition, the battery for driving the device is heavy, but the battery is provided under the light projecting / receiving part in the casing, so that the center of gravity of the casing can be further lowered. When the casing is carried while being supported in a suspended state, the posture of the casing is further stabilized, and the casing can be carried more easily.
Therefore, by mounting the battery equipment for driving, while it is possible to operate the internal quality measuring device even in places not require a local power source, be as portable internal quality measuring device is more easily did it.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the agricultural product internal quality measuring device (hereinafter sometimes simply referred to as an internal quality measuring device) is a light projecting means for projecting light onto a measurement object located at a measurement location P. 1 and a light projecting / receiving unit L including a light receiving unit 2 that receives light from the object to be measured on which light is projected, and a light guiding unit 3 A spectroscopic measuring unit M including a spectroscopic unit 30 for splitting the guided light, and a light receiving sensor 4 as a light intensity detecting unit for detecting the intensity of the light split by the spectroscopic unit 30 for each wavelength; Based on the detection information, the control unit 5 that obtains the internal quality information of the object to be measured, the operation unit 6 that commands various control information to the control unit 5, and the internal quality information obtained by the control unit 5 are read. Display unit 7 for displaying as possible display information and device And the cooling fan 8 for blowing air 却用 is configured to include a battery 9 or the like for the device driver.

As shown in FIGS. 2 to 4, the internal quality measuring device includes the light projecting / receiving unit L, the spectroscopic measurement unit M, the control unit 5, the operation unit 6, the display unit 7, and the cooling fan 8. And all the members which comprise an internal quality measuring device, such as the said battery 9, are assembled | attached integrally using the casing 40, and are comprised.
In other words, the casing 40 is configured to have a handle 10 for supporting the suspension at the top, and the light projecting / receiving unit L and the spectroscopic measuring unit M are arranged in the casing 40 with the spectroscopic measuring unit M being the projecting / receiving unit L. The control unit 5 and the battery 9 are provided below the light projecting / receiving unit L in the casing 40.

Hereinafter, the casing 40 and the handle 10 will be described.
As shown in FIG. 2, the casing 40 includes a casing main body 41 having an opening 41 a that opens over both the left and right lateral sides and the back, and a cover 42 that can open and close the opening 41 a of the casing main body 41. It is prepared for.
Further, as shown in FIG. 6, a leg protrusion 43 is provided on the bottom portion of the back portion of the casing 40 so as to protrude in a direction away from the back portion.

As shown in FIGS. 2 to 5, the handle 10 is distributed and arranged on both the left and right ends of the upper portion of the casing 40, and each of the arms 10 a extends upward from the upper portion of the casing 40 and the upper end portion of the arm portion 10 a. And at least a part of the middle portion of the arm portion 10a in the longitudinal direction protrudes in a direction away from the back portion of the casing 40.
Specifically, as shown in FIGS. 2 and 4, each arm portion 10 a protrudes in a direction away from the back portion of the casing 40 in the side view of the casing 40 and has an upper end portion in the longitudinal direction of the casing above the casing 40. It is provided in a generally arc shape in a form located at a position slightly rearward of the center so as to extend from the rear end of the upper surface portion of the casing 40 to above the upper surface portion.

A rectangular casing bottom plate portion 41b, a rectangular casing front plate portion 41c extending vertically upward from the front end portion of the casing bottom plate portion 41b, and an inclined shape positioned upward from the upper end of the casing front plate portion 41c toward the casing back side. rectangular casing upper plate portions 41d extending, and the pair of arm portions 10a extending from the rear end of the casing upper plate portions 41 d upward as provided integrally, formed casing frame F in an aluminum extrusion Thus, the casing main body 41 constituted by the casing bottom plate portion 41b, the casing front plate portion 41c, and the casing upper plate portion 41d and the pair of arm portions 10a of the handle 10 are integrally formed by the casing frame F. .
Further, on the rear end side of the casing bottom plate portion 41 b of the casing main body 41, a long lid abutting portion 44 having screw holes formed at both ends along the end edge is provided. On the upper side of the casing upper plate portion 41d, a long lid abutting portion 45 having screw holes formed at both ends is provided along the edge.

As shown in FIGS. 4 and 5, a sample storage container as a measurement object storage container that stores a measurement object is provided at a substantially horizontal center of the upper side portion of the casing front plate portion 41 c of the casing body 41. A vertically long rectangular container insertion opening 41e for inserting and removing 50 is formed.
In the sample storage container 50, a granular object to be measured such as ginger and brown rice is stored, and the internal quality of the granular object to be measured is measured by the internal quality measuring device.

As shown in FIG. 2 to FIG. 4, a container holding frame 11 having a vertically long rectangular parallelepiped shape with a front opening opened over the whole and circular light passage openings (not shown) on both left and right sides is provided at the front. The casing body 41 is attached to the inner surface side of the casing front plate portion 41c with the opening facing the container insertion opening 41e. That is, the inside of the container holding frame 11 is configured as the measurement location P.
A magnet latch 12 for holding the sample storage container 50 inserted into the container holding frame 11 is attached to the back of the container holding frame 11 so that the magnet can be moved back and forth by repeating the pushing operation. It has been.

Then, when the sample storage container 50 is inserted into the container holding frame 11 through the container insertion opening 41e and the magnet latch 12 is pushed at the tip of the sample storage container 50, the magnet protrudes and the sample storage container 50 is magnetized. The sample storage container 50 is held at the measurement location P.
When the sample storage container 50 is pushed and operated in such a state that the sample storage container 50 is held at the measurement location P, the magnet of the magnet latch 12 is retracted and the sample storage container 50 is separated from the magnet. The sample storage container 50 can be taken out from the container holding frame 11 through the container insertion opening 41e.
That is, the sample storage container 50 storing the object to be measured is configured to be inserted into the measurement point P and to be taken out from the measurement point P through the container insertion opening 41e provided on the front surface of the casing 40. Will be.
As shown in FIGS. 1, 2, and 4, the sample storage container 50 is pressed into the inner part of the upper part in the container holding frame 11 as it is inserted into the container holding frame 11. A measurement command switch 17 is provided, and when the measurement command switch 17 is pressed by the sample storage container 50, a measurement start command is commanded to the control unit 5.

  Further, as shown in FIGS. 2, 3 and 6, a power supply for instructing the start and stop of the operation of the internal quality measuring device to the upper end side of the left edge on the inner surface side of the casing front plate portion 41c of the casing body 41. A switch 13, a power cable connecting part 14 for connecting power cables 23 and 24 for supplying driving power for the internal quality measuring device, a data output cable connecting part 15 for outputting internal quality measurement results and the like are attached. A rectangular terminal mounting plate 16 is attached.

  As shown in FIGS. 2 to 4, a control box 18 having a circuit board (not shown) on which the control unit 5 and the like are mounted is provided below the light projecting / receiving unit L and on the back side of the spectroscopic measurement unit M. In the positioned state, the casing body 41 is supported on the inner surface side of the casing bottom plate portion 41b.

As shown in FIG. 2, the cover portion 42 is formed by bending an aluminum plate material into a U-shape in plan view so as to include a casing back plate portion 42a, a casing right plate portion 42b, and a casing left plate portion 42c. Is done.
Further, a notch for exposing the terminal mounting plate 16 is formed on the upper side of the casing left plate portion 42c of the cover portion 42, and the inner surface side of the casing right plate portion 42b of the cover portion 42 is formed on the inner side of the cover portion 42. The cooling blower 8 is attached so as to face the light projecting means 1 in a state where the cover portion 42 is mounted on the casing body 41.
The casing back plate portion 42a of the cover portion 42 is formed with an air inlet 42d for sucking cooling air into the casing 40 by the ventilation action of the cooling fan 8, and the dust removing filter 19 is formed in the air inlet. Is intervening.

  At the four corners of the casing back plate portion 42a of the cover portion 42, holes for screwing screws 46 into the screw holes of the lid abutting portions 44 and 45 provided on the casing main body 41 are formed. Are screwed into the screw holes of the lid abutting portions 44 and 45 through the four holes, so that the cover portion 42 is removed. The opening 41a attached to the casing body 41 is closed.

As shown in FIGS. 4 and 6, in the state where the cover portion 42 is attached to the casing body 41 as described above, the cover portion 42 is inward of the rear end edge portion of the casing bottom plate portion 41 b of the casing body 41. A portion protruding from the cover portion 42 in the casing bottom plate portion 41 b is configured to function as the leg protrusion 43.
Then, the casing 40 has a normal posture in which the handle 10 is positioned on the upper side as shown in FIG. 5, and the arm portion 10a of the handle 10 and the leg protrusion 43 on the leg as shown in FIG. It is configured so that it can be installed in a supine posture.
Incidentally, FIG. 6A shows a side view when the casing 40 is placed in a supine posture, and FIG. 6B shows a front view when the casing 40 is placed in a supine posture. A visual figure is shown.

As shown in FIGS. 5 and 6, the display unit 7 is provided on the casing upper plate portion 41 d of the casing main body 41 so that its display screen is parallel to the casing upper plate portion 41 d, and the operation unit 6. However, the buttons 6a and 6b for inputting each control information and items of information for inputting by the buttons 6a and 6b are configured in a touch panel type displayed on the display unit 7.
That is, in a state where the display unit 7 is placed in a normal posture in which the casing 40 is positioned with the handle 10 on the upper side, the display screen is in a state of being inclined so as to be positioned on the back side of the casing 40. It is provided on the upper surface of the casing 10.

The display unit 7 will be further described.
The display unit 7 is configured to be switchable to a plurality of types of operation button screens having different types of buttons for inputting control information, in addition to a screen for displaying internal quality measurement results and the like.
For example, as shown in FIG. 5, an operation button screen for selecting a measured agricultural product for selecting a target agricultural product is displayed.
On the operation button screen for selecting the measurement agricultural products, a measurement target selection button 6a for selecting any one of ginger, raw brown rice, dry brown rice, and polished rice as a measurement target includes ginger, raw brown rice, dry brown rice, and polished rice. It is displayed corresponding to each.
Further, the screen inversion button 6b is always displayed on the display unit 7 regardless of what screen is displayed.

Then, when the display state switching command is instructed by the screen inversion button 6b, the control unit 5 displays the display information on the display unit 7 by inverting the display state before and after the display state switching command is instructed. It is configured to let you.
That is, the control unit 5 controls the display operation of the display unit 7 to display the display information, and the casing 40 is placed in the normal posture based on the display state switching command by the screen inversion button 6b. A normal display state (see FIG. 5) in which the display information is displayed on the display unit 7 with the vertical direction corresponding to the state, and the display information displayed on the display unit by reversing the normal display state. The display is switched to the upside down display state (see FIG. 6) displayed at 7.

  The light projecting means 1 includes a light source such as a halogen lamp that radiates infrared light. As shown in FIGS. 2 and 3, the light projecting means 1 passes through a light passage opening on the right side of the container holding frame 11. It is supported on the inner surface side of the casing front plate portion 41 c of the casing body 41 in a state of being positioned on the right side of the container holding frame 11 so as to project light onto the sample storage container 50 in the holding frame 11.

Further, as shown in FIGS. 1 and 3, between the light projecting means 1 and the container holding frame 11, a shutter 20 has a closed position that crosses the optical path of the light projected from the light projecting means 1. The position is switched by a shutter solenoid 21 at an open position retracted from the optical path.
Further, a heat cut filter 22 for cutting light in the far-infrared wavelength range of the light projected from the light projecting means 1 is provided between the light projecting means 1 and the container holding frame 11.

As shown in FIG. 3, the light receiving means 2 receives light emitted from the light passage opening on the left side of the container holding frame 11 through the sample storage container 50 in the container holding frame 11. The casing holding frame 11 is supported on the inner surface side of the casing front plate portion 41c of the casing main body 41 in a state of being positioned on the left side of the container holding frame 11.
As shown in FIGS. 1 to 3, the light guiding means 3 includes a measuring light optical fiber 3 a that guides light that has passed through the object to be measured, and a reference light optical fiber 3 b that guides reference light. ing.
Each of the measurement light optical fiber 3a and the reference light optical fiber 3b is composed of a number of strands. As shown in FIGS. 1 and 7, the measurement light optical fiber 3a has an annular end on the incident side. And the other part is configured by bundling a large number of strands so as to be cylindrical, and the reference light optical fiber 3b is configured by bundling a number of strands so as to be cylindrical over the entire length. The light receiving means 2 includes an annular incident side end of the measurement light optical fiber 3a and a circular incident side end of the reference light optical fiber 3b, and an annular incident side end of the measurement light optical fiber 3a. It is configured to be held by the fiber holder 2a so that the circular incident side end of the reference light optical fiber 3b is located inside.

As shown in FIGS. 2 to 4, the spectroscopic measurement unit M is supported on the inner surface side of the casing bottom plate portion 41 b of the casing body 41 in a state of being positioned on the lower side of the light projecting / receiving unit L.
As shown in FIG. 1, the spectroscopic means 30 of the spectroscopic measurement unit M includes a spectroscopic unit dark box 31 including an entrance slit 31 s for entering light guided by the measurement light optical fiber 3 a or the reference light optical fiber 3 b. A concave diffraction grating 32 that separates light incident from the incident slit 31s into light having a plurality of wavelengths is housed therein.
The light receiving sensor 4 is provided in the dark box 31 so as to simultaneously receive the light spectrally reflected by the concave diffraction grating 32 for each wavelength. The light receiving sensor 4 is constituted by a charge accumulation type CCD line sensor having 1024 pixels.

As shown in FIG. 1, the light guided by the measurement light optical fiber 3a is incident on the incident slit 31s, and the light guided by the reference light optical fiber 3b is incident on the incident slit 31s. An incident light switching unit 60 for switching between and is provided.
The incident light switching unit 60 will be further described.
An incident light switching unit dark box 61 is connected to the side wall of the spectral unit dark box 31 where the incident slit 31s is formed, and faces the incident slit 31s of the spectral unit dark box 31 in the incident light switching unit dark box 61. The optical fiber 3a for measurement light and the optical fiber 3b for reference light are supported by the side wall part in the penetration state.

The incident light switching unit 60 includes a fiber support 62 including a measurement light relay fiber 62a and a reference light relay fiber 62b in the incident light switching unit dark box 61, and an incident end face of the measurement light relay fiber 62a. Is opposed to the exit end face of the measurement light optical fiber 3a, and the exit end face of the measurement light relay fiber 62a is opposed to the entrance slit 31s of the spectroscope dark box 31, and the entrance end face of the reference light relay fiber 62b. Of the reference light optical fiber 3b is opposed to the reference light measuring fiber 63b at the reference data measurement position where the output end face of the reference light relay fiber 62b is opposed to the incident slit 31s of the spectroscope dark box 31. It is configured to be freely movable.
Incidentally, 64 is a gear mechanism that is connected to the incident light switching motor 63 so that the fiber support 62 is driven to move between the normal measurement position and the reference data measurement position.

  That is, when the fiber support 62 is switched to the normal measurement position by the incident light switching motor 63, the light guided by the measurement light optical fiber 3a is transmitted from the incident slit 31s via the measurement light relay fiber 62a. When the light is incident on the dark box 31 for the spectroscopic section and the fiber support 62 is switched to the reference data measurement position by the incident light switching motor 63, the light guided by the reference light optical fiber 3b is the reference light relay fiber 62b. Then, the light enters from the incident slit 31 s into the spectroscopic dark box 31.

Furthermore, as shown in FIG. 1, the incident light switching unit dark box 61 is positioned between the fiber support 62 and the side wall portion where the incident slit 31 s of the spectroscopic unit dark box 31 is formed, The filter equipment disc 25 is provided in a posture orthogonal to the incident optical path incident on the incident slit 31 s so as to be rotatable around an axis parallel to the incident optical path by the filter switching motor 26.
Although not shown in the drawing, the filter equipment disc 25 is arranged at least in a wavelength range for component analysis, a reference filter having a predetermined transmittance in a state of being arranged along a circumference intersecting the incident optical path. A wavelength calibration filter (such as a V10 filter) from which calibration light having two peak portions is obtained, and a light passage opening through which light passes are provided.

This internal quality measuring device is configured to be driven by three power sources of AC 100 V, DC 12 V and the battery 9.
Hereinafter, the power supply circuit 70 that enables driving with three power supplies as described above will be described with reference to FIG.
A DC converter 23c for converting AC100V to DC12V, and connected to an AC power cable 23 connected to an AC100V outlet and a socket (such as a cigarette lighter socket) from which DC12V is output, such as an automobile or a combiner. A power cable 24 is provided.
The AC power cable 23 and the DC power cable 24 are connected to the power cable connecting portion 14 and are supplied with driving power.

  The power supply circuit 70 is supplied with power from the power cable connecting portion 14 when the power supply circuit 70 is switched to the battery side and driving power is output from the battery 9 when no power is supplied from the power cable connecting portion 14. Accordingly, the relay 71 can be switched to the state where the driving power is output from the power cable connecting portion 14 by switching to the power source side, and the DC 12V / 4A power from the power cable connecting portion 14 is DC 24V / It is composed of a charging circuit unit 72 and the like for converting the battery 1 into 1A and charging the battery 9.

  That is, when the AC power cable 23 is connected to the power cable connecting portion 14, the internal quality measuring device is driven by the AC 100V power source, and the battery 9 is charged by the AC 100V power source. When the DC power cable 24 is connected to the cable connecting portion 14, the internal quality measuring device is driven by a DC 12V power source such as an automobile or a combine, and the battery 9 is charged by the DC 12V power source.

Next, the sample storage container 50 will be described with reference to FIGS. 9 and 10.
The sample storage container 50 includes a container body 51 having a storage portion 53 that is open at the top and includes a bottom wall 53b and a side peripheral wall 53c, and the container 53 in a closed posture in which the opening 53a in the storage portion 53 can be freely opened and closed. The main body 51 is provided with a lid 52 that can be fixedly mounted, and the container main body 51 stores the granular object to be measured as a measurement object in the storage portion 53 and fixedly mounts the lid 52 in a closed posture. In the state, it is configured to be attached to and detached from the measurement point P in the quality measuring device.
And at least one part of the circumferential direction in the said side peripheral wall 53c of the said accommodating part 53 is comprised by the backward displacement wall part 54 which can be retracted elastically displaceably.

In this embodiment, the backward displacement wall portion 54 is configured by supporting a long leaf spring 55 extending along the circumferential direction of the side circumferential wall 53c in a fixed state in a part of the longitudinal direction. .
Further, the backward displacement wall portion 54 arranges a pair of the plate springs 55 in the circumferential direction of the side peripheral wall 53c in a state where one end side portion in the longitudinal direction overlaps, and the overlapping one end side portion and Is configured to support the other end portion on the opposite side in a fixed state.

Hereinafter, the sample storage container 50 will be further described.
A side peripheral wall 53c of the storage portion 53 is formed in a rectangular shape in a top view, and the container body 51 has an open top surface and a bottom wall so as to include the rectangular side peripheral wall 53c of the storage portion 53. 51b is provided and the outer peripheral part is comprised by the bottomed shape used as a rectangular shape by the top view.
The lid body 52 extends along the longitudinal direction of a pair of opposing wall portions in the four wall portions corresponding to the four sides of the side peripheral wall 53c of the storage portion 53, and the interior of the storage portion 53 in a top view. It is configured to be supported by the container body 51 by a hinge 56 so as to be freely opened and closed around a swing axis positioned outside the space.
In the following description, of the four side peripheral wall portions corresponding to the four sides of the side peripheral wall of the container main body 51, the side peripheral wall on the side where the lid 52 is swingably supported is referred to as the front side peripheral wall portion 51m. The side peripheral wall part connected to the left end of the front peripheral wall part 51m is referred to as a left peripheral wall part 51x, the side peripheral wall part connected to the right end of the front peripheral wall part 51m is referred to as a right peripheral wall part 51y, and the front peripheral wall The side peripheral wall portion facing the portion 51m may be referred to as a rear side peripheral wall portion 51n.

The leaf spring 55 extends substantially in parallel with the rear side peripheral wall part 51n at each of the left side peripheral wall part 51x and the right side peripheral wall part 51y of the container main body 51 and is biased toward the rear side peripheral wall part 51n. It is supported in a cantilevered manner with the end portions stacked on top of each other.
The front peripheral wall portion 51m, the left peripheral wall portion 51x, the right peripheral wall portion 51y, and the pair of leaf springs 55 of the container body 51 constitute the side peripheral wall 53c of the storage portion 53, and the container body The bottom wall 53b of the storage portion 53 is configured by the bottom wall 51b of the 51. Incidentally, each leaf spring 55 is bent so as to bulge toward the rear peripheral wall portion 51n of the container body 51, and the wall portion of the side peripheral wall 53c of the storage portion 53 formed by the pair of leaf springs 55 is formed. The container body 51 is formed in a shape that bulges toward the rear side peripheral wall portion 51n, but the shape including such a wall portion is also included in the rectangular shape.
That is, among the pair of wall portions in which the longitudinal direction of the four wall portions of the side peripheral wall 53c of the storage portion 53 is parallel to the swing axis of the lid 52, the swing axis of the lid 52 The wall portion on the far side is constituted by the backward displacement wall portion 54.

  Further, the space between the rear side peripheral wall portion 51n of the container body 51 and the two leaf springs 55 functions as an excess sample storage portion 57 for storing the granular measurement object overflowing from the storage portion 53. It is configured.

A circular opening is formed in a portion of the bottom wall 51b of the container main body 51 corresponding to the bottom wall 53b of the storage portion 53, and a light transmitting glass 58 is fitted into the opening. A circular opening is formed so as to face the light transmitting glass 58 at the bottom of the container body 51 in the closed position, and the light transmitting glass 59 is fitted into the opening.

Further, a locking section 52a is extended at an end edge portion of the lid body 52 opposite to the end edge portion supported by the hinge 56 so as to be bent at a right angle toward the container body side. A locking protrusion 52b is formed at the center of the section 52a so as to protrude inward (hinge side).
Further, the locking projection 52b of the locking piece 52a is fitted into the rear peripheral wall portion 51n of the container main body 51 in the closed state, and the lid 52 is closed. A locking recess 51e is formed to be held at the top.

Then, when the lid 52 is opened, the granular object to be measured is stored in a piled state in the storage portion 53 of the container body 51 and the lid 52 is closed. When the granular measurement object stored in 53 is pressed, the two flat springs 55 are elastically displaced backward as indicated by the phantom line (two-dot chain line) in FIG. In addition, the surplus portion of the granular material to be measured stored in the storage portion 53 is spilled into the surplus sample storage portion 57, so that the storage portion 53 is filled with the uniform particle density. Will be.
Then, the container body 51 in a state where the lid 52 is fixedly mounted in the closed posture is inserted into the container holding frame 11 through the container insertion opening 41e in a posture in which the rear side peripheral wall portion 51n is directed forward, The lid is configured so that the front peripheral wall portion 51m of the container main body 51 closes the container insertion opening 41e in a state where the container main body 51 is held at the measurement point P. Configured to work.

The control unit 5 is configured by using a microcomputer, and based on various control information from the operation unit 6, the measurement command switch 17, etc., the light source of the light projecting means 1, the display unit 7, the shutter solenoid 21, the filter Control of the operation of each part such as the switching motor 26 and the incident light switching motor 63 is executed, and calculation processing for obtaining the internal quality information of the object to be measured based on the detection information of the light receiving sensor 4 is executed. It is configured.
Hereinafter, calculation processing by the control unit 5 will be described.
The control unit 5 includes a normal measurement mode for measuring spectrum data of light transmitted through the measurement object (hereinafter, sometimes referred to as measurement spectrum data), spectrum data of light transmitted through the reference filter (hereinafter referred to as reference). Reference data measurement mode for measuring (sometimes described as spectrum data), dark current data measurement for obtaining an output value of the light receiving sensor 4 in a state where light is blocked (hereinafter, sometimes referred to as dark current data) Mode and wavelength calibration data measurement mode for measuring spectrum data of light that has passed through the wavelength calibration filter (hereinafter sometimes referred to as wavelength calibration spectrum data) is calibrated so that it can be executed alternatively. .

In the normal measurement mode, the control unit 5 controls the shutter solenoid 21 to open the shutter 20 in a state where the sample storage container 50 filled with the object to be measured is loaded in the container holding frame 11. The incident light switching motor 63 is controlled so that the fiber support 62 is positioned at the normal measurement position, and the light passage opening of the filter equipment disk 25 is positioned at a position crossing the incident light path. The filter switching motor 26 is controlled so that the output value of the light receiving sensor 4 is obtained as measurement spectrum data.
In this measurement spectrum data, light that has passed through the measurement object filled in the sample storage container 50 is received by the annular incident end face of the measurement light optical fiber 3a, and the received light is measured light light. The light is guided by the measurement light relay fiber 62a of the fiber 3a and the fiber support 62, is incident on the spectroscopic dark box 31 through the incident slit 31s, and is split by the concave diffraction grating 32, and the split light is received by the light receiving sensor 4. And the data for each wavelength is output from the light receiving sensor 4.
And since the light which permeate | transmitted the to-be-measured object with which the sample storage container 50 was filled is received by the annular incident end surface of the optical fiber 3a for measurement light, the data of a to-be-measured object in a wide range can be obtained, Measurement accuracy of internal quality information can be improved.

In the reference data measurement mode, the control unit 5 opens the shutter 20 so that the shutter 20 is opened in a state where an empty sample storage container 50 that is not filled with an object to be measured is loaded in the container holding frame 11. The solenoid 21 is controlled, the incident light switching motor 63 is controlled so that the fiber support 62 is positioned at the reference data measurement position, and the reference filter of the filter mounting disk 25 is traversed by the incident light path. The filter switching motor 26 is controlled so as to be positioned, and the output value of the light receiving sensor 4 is obtained as reference spectrum data.
In this standard data measurement mode, the light transmitted through the empty sample storage container 50 is received by the incident end face of the reference light optical fiber 3b, and the received light is transmitted through the reference light optical fiber 3b and the fiber support 62. The light is guided by the reference light relay fiber 62b, is incident on the spectroscopic dark box 31 through the incident slit 31s, is split by the concave diffraction grating 32, and the split light is received by the light receiving sensor 4 and the light receiving sensor. The data for each wavelength is output from 4.

In the dark current data measurement mode, the control unit 5 is configured to control the shutter solenoid 21 so as to close the shutter 20 and obtain the output value of the light receiving sensor 4 as dark current data.
In the wavelength calibration data measurement mode, the controller 5 opens the shutter 20 so that the shutter 20 is opened in a state where an empty sample storage container 50 that is not filled with an object to be measured is loaded in the container holding frame 11. The solenoid 21 is controlled, the incident light switching motor 63 is controlled so that the fiber support 62 is positioned at the reference data measurement position, and the wavelength calibration filter of the filter equipment disc 25 is connected to the incident light path. The filter switching motor 26 is controlled so as to be positioned at a position that crosses the signal, and the output value of the light receiving sensor 4 is obtained as wavelength calibration spectrum data.
Incidentally, the control unit 5 is configured to calibrate the light receiving wavelength of each light receiving element by using the wavelength calibration spectrum data to obtain a correspondence relationship between the plurality of light receiving elements of the light receiving sensor 4 and the light receiving wavelength. Yes.

And the said control part 5 is comprised so that the internal quality information of a to-be-measured object may be calculated | required using the spectroscopic analysis method which is a well-known technique.
That is, the spectrum data for measurement obtained in the normal measurement mode is normalized using the reference spectrum data obtained in the reference data measurement mode and the dark current data obtained in the dark current data measurement mode. Absorbance spectrum data for each wavelength of the emitted light is obtained, and a second derivative value of the absorbance spectrum data is obtained. And it is comprised so that the content rate and taste of the water | moisture content, protein, amylose, etc. which are contained in to-be-measured object may be obtained as internal quality information by the secondary differential value and the preset calibration formula.

  Absorbance spectrum data d is obtained by the following equation 1 where Sd is the spectrum data for measurement, Rd is the reference spectrum data, and Da is the dark current data.

[Formula 1]
d = log [(Rd−Da) / (Sd−Da)]

  Then, the internal quality information of the object to be measured is obtained by using the value of the specific wavelength among the values obtained by second-order differentiation of the absorbance spectrum data d thus obtained and the calibration formula shown in the following formula 2. It is done.

[Formula 2]
Y = K0 + K1 · A (λ1) + K2 · A (λ2) ……

However,
Y: Internal quality information K0, K1, K2 ...; Coefficients A (λ1), A (λ2) ...; Second derivative of absorbance spectrum at specific wavelength λ

A calibration formula is set in advance for each item of the internal quality information to be measured for each of a plurality of types of objects to be measured, and stored in the control unit 5.
That is, for each object to be measured, a specific wavelength λ1, λ2,..., Coefficients K0, K1, K2... Are set for each item of internal quality information to be measured, and a calibration formula is set.

  In the internal quality measuring device of this embodiment, for ginger, a calibration formula for measuring water and protein is set, and for raw brown rice (undried brown rice), for measuring water, protein and taste, respectively. A calibration formula for measurement of moisture, protein, amylose, and taste is set for each of dry brown rice (dried brown rice) and polished rice.

Hereinafter, the control operation of the control unit 5 will be described.
It should be noted that the output value (voltage value) of the light receiving sensor 4 is previously empty for determining whether or not the sample storage container 50 loaded in the container holding frame 11 is in an empty state in which the measurement object is not filled. A set value for container determination and a set value for measurement for appropriately measuring internal quality information are set in advance and stored in the control unit 5.

When a measurement start command is commanded by the measurement command switch 17, the control unit 5 controls the incident light switching motor 63 so that the fiber support 62 is positioned at a reference data measurement position, and the filter While the filter switching motor 26 is controlled so that the reference filter of the equipment disc 25 is positioned at a position crossing the incident optical path, the shutter is set for a preset measurement time (for example, 30 msec) for preliminary measurement. The shutter solenoid 21 is controlled so as to open 20, and a preliminary measurement mode for obtaining peak output values of the output values of a plurality of light receiving elements in the light receiving sensor 4 as preliminary measurement data is executed.
When the preliminary measurement data is equal to or greater than the set value for determining the empty container, the control unit 5 determines that the empty sample storage container 50 is loaded in the container holding frame 11, and the reference data measurement mode, dark The current data measurement mode and the wavelength calibration data measurement mode are executed to measure the reference spectrum data, the dark current data, and the wavelength calibration spectrum data.

In addition, when the preliminary measurement data is smaller than the set value for determining the empty container, the control unit 5 determines that the sample holding container 50 filled with the measurement object is loaded in the container holding frame 11, and sets the preliminary measurement data. Based on the measurement data, a light projection time during which the light receiving sensor 4 obtains data that is equal to or greater than the set value for measurement is obtained, and the shutter solenoid 21 is controlled to open the shutter 20 during the obtained light projection time. Then, the normal measurement mode is executed to measure the spectrum data for measurement.
The normal measurement mode is executed a set number of times (for example, three times), and an average value of data measured in each mode is set as measurement spectrum data.

  Then, the control unit 5 calculates the internal quality information based on the calibration formula corresponding to the measurement object set as the measurement target by the operation unit 6 and causes the display unit 7 to display the calculation result.

  In addition, when a display state switching command is instructed by the screen inversion button 6b of the operation unit 6, the control unit 5 inverts up and down with respect to the display state before the display state switching command is instructed. Is displayed on the display unit 7.

[Another embodiment]
Next, another embodiment will be described.
(A) The opening 41a of the casing main body 41 that is opened and closed by the cover portion 42 is exemplified in the above embodiment in the case where the casing main body 41 is configured to open on both the left and right lateral sides and the back. However, you may comprise so that any two or either one of the right and left side parts and back part in the casing main body 41 may be opened.

(B) The installation form of the handle 10 with respect to the casing 40 is not limited to the form described in the above embodiment.
For example, in the above embodiment, the grip portion 10b is attached to the upper end portions of the pair of arm portions 10a extending upward from the upper portion of the casing 40, but one arm portion extending upward from the upper portion of the casing 40 is used. It is good also as a form by which a holding part is attached to an upper end part.

(C) In the above embodiment, the display state switching command for switching the display state of the display unit 7 between the normal display state and the upside down display state is illustrated as an example in which the display state switching command is artificially instructed by the screen inversion button 6b. An attitude detecting means for detecting whether the casing is installed in the normal attitude or the supine attitude is provided, and a display state switching command is automatically issued based on detection information of the attitude detecting means. You may do it.

(D) As a configuration for positioning the measurement object at the measurement point P, in the above embodiment, the measurement object storage container 50 storing the measurement object is configured to be detachable from the measurement point P. The case where the object to be measured is positioned at the measurement point P while being stored in the object to be measured storage container 50 is illustrated. However, when the object to be measured such as fruit is in a lump shape, the lump object to be measured is measured. You may comprise so that it may be located in the location P.

(E) In the above embodiment, the case where the light projecting means 1 and the light receiving means 2 are arranged in a form for receiving the light transmitted through the object to be measured has been exemplified. You may arrange | position with the form which light-receives.

Block diagram showing the overall configuration of the internal quality measuring device for agricultural products Disassembled perspective view of the internal quality measuring device for agricultural products Longitudinal rear view of the internal quality measuring device for agricultural products Longitudinal left side view of internal quality measuring device for agricultural products Front view of the agricultural product internal quality measuring device installed in the normal posture The figure which shows the state where the internal quality measuring device of agricultural products was installed in the supine posture View from the light incident side of the light receiving means Block diagram showing power supply circuit Perspective view of sample storage container Cross-sectional plan view of sample storage container

DESCRIPTION OF SYMBOLS 1 Light projection means 2 Light reception means 3 Light guide means 4 Light intensity detection means 5 Control part 7 Display part 9 Battery 10 Handle 10a Arm part 10b Grip part 30 Spectroscopic means 40 Casing 41 Casing main body 41a Opening part 41e Container insertion opening part 42 Cover part 43 Protrusion part 50 Leg object storage container L Light emitting / receiving part M Spectroscopic measurement part P Measurement location

Claims (5)

A light projecting / receiving unit provided with a light projecting unit that projects light onto a measurement object located at a measurement location, and a light receiving unit that receives light from the measurement object onto which light is projected from the light projecting unit;
A spectroscopic measuring unit including a spectroscopic unit that splits the light received by the light receiving unit and guided by the light guiding unit, and a light intensity detecting unit that detects the intensity of the light split by the spectroscopic unit for each wavelength; An internal quality measuring device for agricultural products provided with
The light projecting / receiving unit and the spectroscopic measurement unit are provided in a casing provided with a handle for hanging support at an upper portion, and the spectroscopic measurement unit is positioned below the light projecting / receiving unit ,
The handle is configured to include an arm portion extending upward from an upper portion of the casing and a grip portion attached to an upper end portion of the arm portion,
At least a part of the middle part in the longitudinal direction of the arm part is configured to protrude in a direction away from the back part of the casing,
In the state of projecting in the direction away from the back part of the bottom side part of the back part of the casing, a leg protrusion is provided,
An internal quality measuring device for agricultural products, wherein the casing is configured to be installed in a supine posture with the handle arm portion and the leg protrusion as legs .   The said casing is comprised including the casing main body provided with the opening part which opens at least one of a side part and a back part, and the cover part which can open and close the said opening part of the casing main body. Equipment for measuring the internal quality of agricultural products. A control unit for obtaining internal quality information of the object to be measured based on detection information of the light intensity detection means is provided in the casing;
In a state where the display unit that displays the internal quality information obtained by the control unit as readable display information is installed in a normal posture in which the casing is positioned on the upper side, the display screen is the display screen Provided on the upper surface of the casing in a state of being inclined to the upper side toward the back side of the casing,
The control unit controls the display operation of the display unit so as to display the display information, and on the basis of a display state switching command, the control unit moves up and down according to a state in which the casing is installed in the normal posture. A normal display state in which the display information is displayed on the display unit with a direction determined, and a vertically inverted display state in which the display information is displayed on the display unit by being inverted up and down with respect to the normal display state. The agricultural product internal quality measuring device according to claim 1 or 2, wherein A measurement object storage container storing the measurement object is configured to be insertable into the measurement location through a container insertion opening provided on the front surface of the casing and to be removable from the measurement location. Item 4. The agricultural product internal quality measuring device according to any one of Items 1 to 3 . The device for measuring the internal quality of agricultural products according to any one of claims 1 to 4 , wherein a battery for driving the device is provided below the light projecting / receiving unit in the casing.

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