JPH0339649A - Inside quality inspection device for vegetable or fruit - Google Patents

Abstract

PURPOSE:To improve the inspection performance by measuring the shape size of a vegetable or fruit halfway on a conveyance path where the vegetable or fruit is mounted and conveyed, calculating a detection position and setting the object at the detection position, and giving a shock corresponding to the size. CONSTITUTION:A measuring means 2 measures the shape size of the vegetable or fruit 10 mounted on receiving pan 6 and inputs its measurement signal 20 to a controller 31. The controller 31 outputs an operation command corresponding to the signal 20 and calculates the detection position for detecting the oscillating wave of the vegetable or fruit 10 to output a detection position signal 312. When a sensor part 32 moves with the signal 312 to face the detection position, a shock means 4 gives the vegetable or fruit 10 the shock corresponding to the operation command. The oscillating wave generated by the vegetable or fruit 10 is detected by the sensor part 32 and supplied to a waveform analysis part 51. The analysis part 51 analyzes the frequency and waveform to analyze specific items and a selection standard value setting part 52 processes plural items regarding the internal quality of the vegetable or fruit 10 respectively and compares them with preset standard values to decide grades by the items, thereby outputting the maximum value (lowest order).

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for checking the internal quality of spherical fruits and vegetables such as watermelons and melons (such as cavities and cracks, etc.) while being conveyed by a conveying means. The present invention relates to an inspection device capable of inspecting the internal quality of fruits and vegetables, and particularly to an internal quality inspection device for fruits and vegetables that is more suitable for application in fruit and vegetable sorting facilities.

[Conventional technology]

Conventionally, the internal quality inspection of fruits and vegetables such as watermelons and melons has been performed by human sensual methods, which involves tapping the external parts of the fruits and vegetables with their hands and using the sound to determine internal defects and ripeness (overripe, immature, overripe), etc. method is commonly used.

In addition, experimental research to evaluate the ripeness, internal defects, etc. of fruits and vegetables based on the impact sound (WC wave) emitted by fruits and vegetables when they are lightly tapped is being carried out in university laboratories around the country and the Food Research Institute of the Ministry of Agriculture, Forestry and Fisheries. Research papers have been published in journals of the Japan Society of Agricultural Machinery, etc.

[Problem to be solved by the invention]

In the method of inspecting internal quality using human senses, the internal quality is determined by the sound of tapping each part of the outer circumferential surface of fruits and vegetables, which takes a lot of effort (time) and does not improve efficiency. This sensory testing method can only be judged by a highly skilled person with many years of experience, and even among experts, there are individual differences in the judgment results. Furthermore, over time, sensory organs become dull due to fatigue, etc., resulting in many erroneous judgments regarding internal quality, resulting in a problem in which good evaluations are not obtained from the market and consumers, and improvements have been desired.

In addition, the method announced above analyzes and evaluates the impact sound (vibration waves) produced when fruits and vegetables are tapped, by combining various measuring instruments and operating them one by one in a laboratory. All of these are used for basic tests on limited samples in laboratories, and are used in fruit sorting facilities that aim to automatically test large quantities of fruits and vegetables of varying sizes. However, there were problems that made it impractical.

The problem of Ul and M that this invention aims to solve is to calculate and correspond to the detection position according to the size of each fruit and vegetable that is different in size and is transported at random, and to apply an impact according to the size of the fruit and vegetable. The objective is to improve internal quality inspection performance.

[Means to solve the problem]

The internal quality inspection device for fruits and vegetables according to the present invention solves the above-mentioned problems, and is as follows.

That is, the internal quality inspection device for fruits and vegetables of the present invention is provided in the middle of the conveyance path of the conveyance means for carrying fruits and vegetables, and includes a measuring means for measuring the shape and dimensions of the fruits and vegetables and outputting a measurement signal, and a measuring means for measuring the shape and dimensions of the fruits and vegetables and outputting a measurement signal. a vibration wave detection means that calculates a predetermined detection position of fruits and vegetables, operates a sensor unit to the detection position, and detects vibration waves of fruits and vegetables, and when the sensor unit of the vibration wave detection means corresponds to the detection position, An impact means applies an impact to an appropriate position of the fruits and vegetables based on the measurement results, analyzes the waveform of the vibration waves, calculates predetermined items related to the internal quality of the fruits and vegetables, and calculates preset standard values (classifications). It is characterized by comprising a waveform analysis arithmetic processing means that compares the waveform (value) to determine the grade and outputs a grade signal.

The conveying means is a conveying device that can preferably place fruits and vegetables one by one on a tray and convey them, for example, a conveyor such as a roller conveyor is used, and a predetermined number of conveyors are installed in the middle of the conveyance path of this conveyor to temporarily stop the trays. It has a station equipped with lift equipment.

The measuring means is configured using a semiconductor laser, a light emitting diode, a camera device, or the like.

The measurement signal is sent to the vibration wave detection means in order to obtain an operation command for operating the impact means and to calculate the vibration wave detection position. Further, this measurement signal is configured to be sent to a waveform analysis calculation processing means and added as a means of waveform analysis.

The detection position of the vibration wave is a position for detecting the vibration waves emitted by the fruit or vegetable when an impact is applied to the fruit or vegetable, and is set, for example, at the equator, shoulder, or top of the fruit or vegetable. be able to.

The vibration wave detection means includes a control device that calculates a vibration wave detection position of fruits and vegetables from the measurement signal, a sensor unit that detects the vibration wave, and a sensor unit that makes the sensor unit correspond to the vibration wave detection position. It consists of a drive device.

The control device calculates the size of the fruit or vegetable from the measurement signal, calculates the detection position of the vibration wave, and outputs a detection position signal. Further, it is configured to output signals (operation commands) for applying different impacts depending on the size of fruits and vegetables. This control device may be, for example, a programmable controller (PC) having an arithmetic control section.

Preferably, a plurality of sensor units are arranged in a predetermined arrangement around the fruits and vegetables. The drive device is operated by a signal outputted by calculating the detected position, and is configured to cause the sensor section to follow the detected position of fruits and vegetables.

The impact means applies an impact to a part of the fruits and vegetables when the sensor section of the vibration wave detection means corresponds to the vibration wave detection position, and the impact means applies an impact to a part of the fruits and vegetables. 1) The device is configured to be activated to apply different impacts depending on the size of fruits and vegetables outputted from the device.

In order to apply an impact force according to the size of fruits and vegetables, it is possible to install multiple impact units with different impact forces and select one of the impact units to operate based on the measurement results, or use a solenoid instead of a cylinder or t. A driving source for operating the impact unit, such as compressed air pressure or current value, is changed based on the measurement results to apply an impact force that corresponds to the size of the fruits or vegetables. There are cases where it is done.

The waveform analysis calculation processing means includes a waveform analysis section that analyzes vibration waves using a frequency analysis circuit using a power spectrum and a waveform analysis circuit using an autocorrelation function, and sets standard values for each measurement item related to internal quality to determine the grade. A selection standard value setting section is provided.

[Effect]

According to the internal quality inspection device for fruits and vegetables of the present invention, when the shape and dimensions of the fruits and vegetables conveyed by the conveying means are measured by the measuring means, a measurement signal is output. Then, from this measurement signal, the vibration wave detection means operates to calculate the size of the fruits and vegetables, calculate a detection position for detecting the vibration waves of the fruits and vegetables, and move the sensor section to the position.

When the sensor section corresponds to the detection position, the impact means operates to apply a corresponding impact based on the size of the fruit or vegetable. The vibration waves emitted by fruits and vegetables due to this impact are detected by the sensor section and sent to the waveform analysis calculation processing means, which analyzes the vibration waves and performs calculation processing on predetermined items. It is possible to determine the grade by comparing set standard values and inspect the internal quality of fruits and vegetables using vibration waves.

That is, according to the present invention, an appropriate detection position is obtained according to the shape and dimensions of the fruits and vegetables, and an impact is applied according to the size of the fruits and vegetables, so that vibration waves can be applied to fruits and vegetables of different sizes under constant conditions. can be detected.

〔Example〕

A preferred embodiment of the present invention is shown in the drawings (Figs. 1 to 1) below.
The explanation will be based on Fig. 6).

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, and Fig. 2 is a partially cutaway plan view of the same. A conveyance means for conveying the tray 6; 2 a measuring means provided in the middle of the conveyance path of the conveyance means 1; measuring means for measuring the shape and dimensions of the fruits and vegetables 10 and outputting a measurement signal; 3 a vibration means for detecting vibration waves of the fruits and vegetables 10; wave detection means; 4 is an impact means for applying an impact according to the magnitude signal to an appropriate position of the fruit or vegetable 10; 5 is a measurement unit that analyzes the detected vibration waves by waveform analysis and performs arithmetic processing on predetermined items; It is a waveform analysis calculation processing means that compares the value with a preset standard value, determines the grade, and outputs an isoline signal.

The conveyance means 1 comprises a conveyor including a large number of driven rollers 1) having a width suitable for conveying the receiving tray 6. The roller 1) can be driven by a chino or the like, but it is preferable to use a heald drive system to suppress vibration and noise and eliminate the cause of erroneous judgments during inspection. Further, as the conveyance means 1, for example, as shown in FIG. 4, a conveyor in which two narrow belts 12 are stretched together or a slat conveyor (not shown) can be used, but both of them are free from vibrations, noise, etc. It is preferable to suppress noise as much as possible.

Here, the saucer 6 will be explained with reference to FIG. 3. The saucer 6 has a mounting portion on the upper surface for stably placing the fruits and vegetables 10, which is formed by disposing a predetermined number of protrusions 61 each having a support surface 61a. In the drawing shown in FIG. 0, the mounting part is made up of four projections 61, but this number is not limited, and it is preferable that the mounting part is configured in an appropriate shape depending on the type of fruits and vegetables 10, etc.

621 to 625 are display switches for displaying the grade determined from the internal quality of the fruits and vegetables 10, and display five grades (excellent, excellent, good, average, and poor), and 620 indicates the internal quality. This indicates that there was a defect.

These display switches 620 to 625 are, for example, toggle type, push button type, lever type, etc. operation switches whose changes can be seen visually when operated, and the grade can be displayed according to the displacement or change of the operation part of the operation switch. I can do it.

Returning to FIGS. 1 and 2, reference numeral 13 denotes a lift device, which separates the tray 6 transported by the transport surface of the transport means 1 from the transport surface and waits so as to float it above the transport surface at a predetermined position. It is structured as follows.

The predetermined position here refers to a position where the measuring means 2 stops and waits the saucer 6 in order to measure the shape and size of the fruits and vegetables 1O, and a position where the vibration wave detection means 3 stops and waits the saucer 6 in order to detect vibration waves. position, and the positions before and after these positions for stopping and waiting the saucer 6.

Reference numeral 131 denotes a soba made of a synthetic resin material, a base rubber member, etc., and rollers 1). 1) and is attached to the base 132. The base 132 is attached to a piston rod 133a of a cylinder 133 arranged to move up and down, and allows the stopper 131 to move up and down.

The operation of the lift device 13 is such that when the tray 6 conveyed on the conveying means 1 reaches the top of the lift device 13, a sensor (not shown) that detects this activates the cylinder 133, and the stopper 131 moves the tray 6 onto the lift device 13. The receiving tray 6 is brought into contact with the bottom surface of the conveying means I and pushed upward, and the receiving tray 6 is raised above the conveying surface of the conveying means I so that the receiving tray 6 stands by on the conveying surface.

Further, it is preferable that the lift device I3 is installed so as not to be directly connected to the conveyor frame of the conveying means 1 in order to prevent noise such as mechanical vibration of the conveying means 1 from being directly transmitted to the waiting tray 6.

Reference numeral 14 denotes a positioning device, which positions the receiving tray 6 in a fixed position while waiting to be raised by the lift device 13, and will be described in detail with reference to FIG.

141, 141 are centering arms, which are combined with a pinion 144;
meshes with a rack 143, and the rack 143 is connected to a piston rod 142a of the cylinder 142. When the cylinder 142 is actuated, the centering arms 141 and 141 simultaneously move in the direction of the arrow (→) on the left and right sides, and the saucer 6 can be positioned at a fixed position.

This positioning mechanism is not limited to this embodiment, and may be configured using other known mechanisms and devices.

Reference numeral 15 is a human-powered device, which displays display switches 620 to 620 on the saucer 6.
625 is operated to display the grade, which will be explained with reference to FIG. are attached to each. Reference numeral 154 denotes a cylinder, which is connected to the - side of the link 151 by a pin 154a, and the operation of the cylinder 154 causes the operating portion 151 of the link 151 to be activated.
a operates (inputs) the display switches 620 to 625 on the saucer 6.

Referring to FIG. 7, the measuring means 2 is illustrated in detail. Reference numeral 21 denotes a gate-shaped frame, on the top of which a cylinder 22 is attached with a piston rod 23 facing downward. This cylinder 22 is combined with an encoder 24 that generates a pulse (signal) every fixed movement amount in accordance with the operation.

Reference numerals 25a and 25b are laser photoelectric switches, which are arranged as a pair on the left and right with respect to the traveling direction of the saucer 6, and generate a laser beam. The laser photoelectric switches 25a, 25b are attached to a lifting arm 26, which is connected to the piston rod 23 of the cylinder 22.

In the figure, 27 is a guide bar, which is attached to the frame 21 via a bracket 28. A slide bearing 29 is attached to the lifting arm 26 in combination with the guide bar 27.

According to the measuring means 2 configured as described above, the laser photoelectric switches 25a and 25b are activated from above with respect to the fruits and vegetables 10 on the saucer 6 that is on standby by the lift device 13 and positioned at a fixed position by the positioning device 14. It descends to a predetermined position below and operates to output the signal intercepted by the fruits and vegetables 10 and the signal from the encoder 24 as the measurement signal 20 to the m-control device 31 of the vibration wave detection means 3, which will be described later.

Although this measuring means 2 uses a cylinder as an actuator for raising and lowering in the drawings, this is not particularly limited, and actuators of different types such as a servo motor or a pulse motor may be used.

Further, the measuring means 2 can also be constructed using a known gate method using a beam or a camera device (none of which are shown).

The vibration wave detection means 3 includes a control device 31, a sensor section 32 for detecting vibration waves emitted by the fruits and vegetables 10, and a drive device 33 that moves this sensor section 32 to a detection position of the vibration waves. .

The control device 31 is, for example, a programmable controller (PC) or the like, and is configured to calculate the size of the fruit or vegetable 10 and the detection position of the vibration wave from the measurement signal 20 output from the measurement means 2.

The detection position of the vibration wave is the type and shape of the fruits and vegetables 10.

Depending on the size, for example, the equator (circumference), 71N, fruit top, etc. can be set. - As an example, if the fruit or vegetable 10 is approximately spherical and the detection position is set at the equator, the control device 31 is configured to calculate the position of the number of pulses A that is interrupted by the fruit or vegetable 10 as the detection position, and output the detection position signal 312. The sensor unit 32 to be used will be described with reference to FIG.
is a vibration wave detection sensor, and is attached to the sensor radar 322. A ring-shaped sensor pad 323 is made of an elastic material such as soft rubber or sponge, and is attached to the sensor head 322 so as to wrap around the vibration wave detection sensor 321 .

324 is a head flange, which is attached to the sensor head 322 via a spring 325, so that the head flange 322 can swing freely toward the sensor.

326 is a cylinder, and the head flange 324 is attached to the tip of the piston rod 326a. This cylinder 326 is connected to a unit base 327.
It is fixed to .

As shown in FIG. 2, a sensor section 32 is arranged on this unit base 327, and the sensor section 32 is arranged in a direction opposite to the direction in which the impact means 4, which will be described later, applies an impact. and mounted in orthogonal left and right directions.

The lifting device 33 is constructed as shown in FIG. 3
31 is a cylinder, which is attached downward to the frame 332, and the piston rod 33 of this cylinder 331
The unit base 327 is connected to the tip of 1a.

333 is a guide bar, which connects the unit base 3 through a guide bush 334 provided on the frame 332.
27, and guides the upward and downward movement of the unit base 327.

335 is a position detection device, for example, an encoder or the like is used. This is because the sensor unit 32 is moved from the origin position (illustrated imaginary line) to the detection position of the vibration wave that changes depending on the size of the fruits and vegetables, so that the amount of movement (signal) from the origin position is detected. cylinder 331
It is provided in combination with.

Further, although a cylinder is used in the drawing for this lifting device 33, it is also possible to use a seven actuator such as a servo motor or a pulse motor to make the sensor section 32 correspond to the vibration wave detection position.

The impact device 4 is constructed as shown in FIGS. 8 and 9. 41a and 41b are hammers with different masses;
Each is connected to a hammer shaft 42a, 42b, and the ends of the hammer shafts 42a, 42b are rotatably supported by a support shaft 43. 44a.

44b is a cylinder, and the tip of each piston rod is loosely connected to the hammer shafts 42a, 42b via connectors 45a, 45b. That is, the hammers 41a and 41b move in and out of the support shaft 43 in the direction of the arrow by the operation of the cylinders 44a and 44b.

46 are hammers 41a, 41b and cylinder 44a
, 44b within a frame, and the support shaft 43 and a support shaft 47 that pivotally supports the head sides of the cylinders 44a and 44b are attached to penetrate the case. This hammer case 46 is connected to a piston rod of a cylinder 48 attached to the unit base 327, so that the entire hammer case 46 can be retracted. Note that 49 is a guide bar for guiding the movement of the cylinder 48 into and out, and 461 is a pad made of rubber, sponge, etc., which is fixed to a part of the hammer case 46 to soften the contact with the fruits and vegetables 10. I have to.

According to the impact means 4 configured as above, fruits and vegetables lO
Depending on the size of the object, the hammer 41a (large) operates to apply a large impact to a large object, and the hammer 41b (small) operates to apply a small impact to a small object.

In addition, in the embodiment, two hammers 41 of different sizes are used with different impact forces.
a and 41b are used, but the number is not limited and may be a different number.

Furthermore, although the impact means 4 of the embodiment is configured to be raised and lowered in combination with the lifting device 33 of the vibration wave detection means 3, it may also be configured by combining the lifting device alone.

In addition, as another method of the impact means 4, a set of impact units is constructed by combining an actuator such as a cylinder or a solenoid with a hammer, and the pneumatic pressure or current value as a driving source for driving the unit is changed. It may be configured so that different impacts are applied. Furthermore, it is also possible to use an exciter such as a speaker driver to provide an impulse with a pulse signal, and change the intensity of the signal to change the impact.

The waveform analysis calculation processing means 5 includes a waveform analysis section 51 and a selection standard value setting section 52.

The waveform analysis section 51 analyzes waveforms for a plurality of measurement items, and includes a frequency analysis circuit using a power spectrum of the vibration waves detected by the vibration wave detection means 3 and a waveform analysis circuit using an autocorrelation function. .

Note that the methods of detecting a peak frequency using a power spectrum and obtaining an autocorrelation function using the waveform analysis method are well known, so their explanation will be omitted.

51) is the amplifier of the vibration wave detection sensor 321, 512
is a filter. The circuit is configured such that the vibration wave signal detected by the vibration wave detection sensor 321 is input to the waveform analysis section 51 via the amplifier 51 and filter 512.

The screening standard value setting unit 52 is configured to set multiple levels of standard values for each measurement item, as shown in FIGS. 1) to 15.

That is, pHpl...P represents each measurement item, i.
・In the evening, standard values are divided into equal lines for each measurement item (classified values)
a, b, c...W are the grade classification values for specifying the grade that falls within the range of each standard value above, and the weighting for characterizing the degree of defect for each measurement item. can be set arbitrarily.

The measurement item P is obtained by multiplying the first peak frequency obtained from the power spectrum of frequency analysis by the coefficient of the size obtained from the size of the fruits and vegetables using the measurement signal 20, and is the measured value of P, which mainly measures the ripeness. Used for judgments such as

The measurement items P and P are the difference in power level between the first peak frequency and the second or third peak frequency of the power spectrum.P4. This is the measured value of P3, and is mainly used for determining the uniformity of internal quality.

The measurement item P4 is the size of the waveform area connecting the peak points of each cycle of the autocorrelation function waveform, and is mainly used for determining internal defects such as cavities.

The measurement item P is a measurement value of Ps that is the sum of the area surrounded by the time axis reference line of the autocorrelation function waveform and the waveform, and is mainly used for determining internal defects.

The classification values graded for each measurement item as described above are comprehensively judged as shown in FIG. 16, and the isoline signal is output. In other words, *marks indicate each measurement item (p+
~ ps) are shown. In Figure 0, where the respective classification values are compared and the maximum value (lowest) among them is ranked as the overall judgment result, ■ (parallel line) is the overall judgment result.In addition, the measurement item is When it is an item to inspect a pre-specified internal defect, an internal defect signal 551 and a green signal 5 are displayed.
An output signal 55 which is a combination of 52 and 52 is output.

This output signal 55 is sent to the human power device 15 and acts to operate any of the display switches 620 to 625 on the saucer 6.

The operation of the fruit and vegetable internal quality inspection apparatus configured as above will be described below with reference to the block diagram of FIG. 1O.

The shape and dimensions of the fruits and vegetables 10 placed on the tray 6 transported by the transport means 1 are measured by the measuring means 2, and a measurement signal 20 is input to the control device 31. Then, the control device 31 receives an operation command 31 from the measurement signal 20.
), and also calculates a detection position for detecting vibration waves of fruits and vegetables and outputs a detection position signal 312. Then, based on this detection position signal 312, the vibration wave detection means 3
When the sensor section 32 moves to correspond to the detection position, the impact means 4 applies an impact of a corresponding magnitude to an appropriate position of the fruits and vegetables 10 based on the operation command 31). The vibration waves generated by the fruits and vegetables 10 due to this impact are transmitted to the sensor section 32.
is detected from the amplifier 51) and sent to the waveform analysis section 51 via the filter 512. Then, the waveform analysis section 51 analyzes the input vibration wave for predetermined items by frequency analysis using a power spectrum and waveform analysis using an autocorrelation function, and the sorting standard value setting section 52 analyzes the input vibration wave using a frequency analysis using a power spectrum and a waveform analysis using an autocorrelation function.
In addition to calculating each of the multiple items related to the internal quality of the product, the grade is determined for each item by comparing it with the preset standard value, and the maximum value (lowest) among these is output as the overall judgment result. Outputs 55.

This output signal 55 causes the input device 15 to actuate the saucer 6.
The grade is displayed on the saucer 6 by operating any of the display switches 620 to 625 above.

〔Effect of the invention〕

As described above, according to the internal quality inspection device for fruits and vegetables according to the present invention, an impact is applied to the fruits and vegetables while the fruits and vegetables are being transported by the conveying means, and vibration waves emitted by the fruits and vegetables due to the impact are detected to determine the internal quality of the fruits and vegetables. Since it is configured to make a comprehensive grade judgment from multiple measurement items related to
The benefits of streamlining and versatility are huge.

Furthermore, by eliminating labor and streamlining the process, the conventional variation in quality due to individual differences has been eliminated, and a uniform selection of fruits and vegetables can be provided to the market and consumers, earning high praise.

Furthermore, since it is configured to apply impact based on the results of measuring fruits and vegetables, fruits and vegetables of different sizes can be inspected under the same conditions, and the performance of quality inspection can be improved.

[Brief explanation of drawings]

Each of the drawings shows an embodiment of the present invention. Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a partially cutaway plan view of the same, Fig. 3 is a perspective view of the saucer, and Fig. 4 is a sectional view of the conveying means. , FIG. 5 is an explanatory diagram of a positioning device, FIG. 6 is an explanatory diagram of a partially broken human-powered device, FIG. 7 is an explanatory diagram of a measuring means, and FIG. 8 is an explanatory diagram of a vibration wave detection means and an impact means. Figure 9 is a partially cutaway perspective view of the impact means, Figure 1O is an operational block diagram, Figures 1) to 15 are all explanatory diagrams of the selection standard value setting section, and Figure 16 is for comprehensive judgment. An explanatory diagram. 1...Transportation means lO...Fruits and vegetables 1)...
・Roller 12...Belt 13...Lift device 131...Stopper 132...Base 13
3...Siritsuta 133 a...Piston port/2 door 1
4... Positioning device 141... Centering arm 142... Cylinder 142a... Piston rod 143... Link 144... Pinion 15... Input device 151... Link 151a... Actuation part 1
52... Support shaft 153... Bracket 154... Cylinder 154a... Pin 2.
...Measuring means 21...Frame 22...Cylinder 23
...Piston rod 24...Encoder 25a
, 25b... Laser photoelectric switch 26... Lifting arm 27... Guide bar 28... Bracket 29... Slide bearing 20... Measurement signal 3... Vibration wave detection means 31... Control Device 31)...Operation command 312...Detection position signal 32...Sensor unit 321...Vibration wave detection sensor 322...Sensor head 323...Sensor bar, do 324...Hend flange 325.・Spring 3
26... Cylinder 326a... Piston rod 327... Unit base 33... Lifting device 331... Cylinder 331a... Piston rod 332... Frame 333... Guide bar 334... Guide Bush 335...Position detection device 4...Impact means 41a, 41b...Hammers 42a, 42b...Hammer shaft 43...Support shafts 44a, 44b...Cylinder 45a, 45b...Connector 46...Hammer case 461...Pad 4F
... Support shaft 48 ... Cylinder 49 ... Guide bar 5 ... Waveform analysis calculation processing means 51 ... Waveform analysis section 51) ... Amplifier 512 ... Filter 52 ... Screening standard value setting Part 55... Output signal 551... Internal defect signal 552... Isoline signal 6... Receiver 61... Protrusion 61a... Support surface 20 to 625... Display Swissochi and 4 others 7g ノ21 withering f1 calm 5 ? Many υ iJ ne/E) figure

Claims (3)

[Claims] (1) A measuring means provided in the middle of the conveyance path of the conveying means for conveying the fruits and vegetables, which measures the shape and dimensions of the fruits and vegetables and outputs a measurement signal, and a measuring means that calculates a predetermined detection position of the fruits and vegetables from the measurement signal. When the sensor section corresponds to the detection position and the vibration wave detection means detects the vibration waves of the fruits and vegetables, and the sensor section of the vibration wave detection means corresponds to the detection position, the measurement result is moved to an appropriate position of the fruits and vegetables. an impact means for applying an impact based on the
Waveform analysis calculation processing that analyzes the waveform of the vibration wave, performs calculation processing on predetermined items related to the internal quality of fruits and vegetables, determines the grade by comparing with preset standard values (categorization values), and outputs a grade signal. An apparatus for internal quality inspection of fruits and vegetables, comprising means. (2) The fruit and vegetable internal quality inspection apparatus according to claim 1, wherein the impact means has a plurality of impact units having different impact forces, and any one of the impact units is activated based on the measurement result. . (3) The internal quality of fruits and vegetables according to claim 1, wherein the impact means has an impact unit, and operates by changing the size of a driving source that operates the impact unit based on the measurement result. Inspection equipment.