JP2008309725A - Weight inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weight inspection device easily confirming a weight value of each component contained in an inspection object or the presence/absence of a specific component almost simultaneously with measurement. <P>SOLUTION: The weight inspection device 10 comprises: a measuring part 12 for performing measurement of an inspection object X; an inspection unit 11 for irradiating the inspection object X with terahertz waves to detect the reflected wave as an absorption spectrum; and a content ratio calculation part 31 for comparing the absorption spectrum obtained in the inspection unit 11 with spectral data of each component to calculate a content ratio of each component contained in the inspection object X. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a weight inspection apparatus capable of performing, by nondestructive inspection, the weight of each component of an object to be inspected containing a predetermined component at a specific ratio such as food or medicine.

  2. Description of the Related Art In recent years, in order to inspect products such as food, an inspection apparatus that inspects foreign matter contamination by irradiating an object to be inspected with electromagnetic waves or radiation and detecting the reflected light or transmitted light. It is used.

For example, Patent Document 1 discloses a scale with a built-in radioactivity detection equipped with a radiation detection means for detecting the amount of radiation contained in a test object in addition to a scale for measuring the weight of the test object such as food. In this apparatus, it is possible to prevent food contaminated with radioactivity from being eaten by determining the food contaminated with radioactivity simultaneously with measurement.
JP 2002-520593 A (released on October 9, 1997)

  However, the conventional scale with a built-in radioactivity detector has the following problems.

  That is, the device disclosed in the above publication is a device for inspecting the presence or absence of radioactive contamination of food or the like. For example, the weight value of various components contained in food or the like can be calculated, or a specific component can be calculated. It is not possible to confirm the presence or absence of.

  An object of the present invention is to provide a weight inspection apparatus capable of easily confirming the weight value of each component contained in an object to be inspected and the presence or absence of a specific component almost simultaneously with weighing. It is in.

  The weight inspection apparatus according to the first invention includes a weighing unit, a spectroscopic unit, and a content ratio calculation unit. The measuring unit measures the entire weight of the inspection object. The spectroscopic unit irradiates the inspected object with a terahertz wave, and detects the transmission amount or reflection amount of the terahertz wave as a spectral spectrum including a plurality of wavelength components. The content ratio calculation unit compares the spectral spectrum obtained in the spectroscopic unit with spectral data corresponding to a plurality of components, and calculates the content ratio of each component included in the inspection object.

  Here, in order to automatically calculate the weight value of each component of the inspection object including a plurality of components in a non-destructive manner, the spectroscopic unit detects the terahertz wave irradiated to the inspection object as a spectral spectrum. The content ratio for each component is calculated by comparing with spectrum data for each of a plurality of components prepared in advance.

  Note that the measurement of the object to be inspected by the measuring unit may be performed at a stage prior to the irradiation of the terahertz wave by the spectroscopic unit, or may be performed in parallel with the irradiation of the terahertz wave. In addition, spectrum data corresponding to each component used for calculating the content ratio of each component by the content ratio calculation unit may be pre-stored in the database, or each time an inspection object is inspected. Newly acquired data may be used. Furthermore, the spectroscopic unit may be provided separately from the light source that emits the terahertz wave. The terahertz wave is an electromagnetic wave having a frequency of 0.3 to 10.0 THz.

  This makes it possible to calculate the weight value of each component based on the content ratio of a plurality of components contained in the inspected object without impairing the value of the product, by simply placing the inspected object on the weighing unit, or for a specific component The presence or absence of can be confirmed. Therefore, for example, inspection of the amount of each component contained in a tablet such as a vitamin preparation can be performed non-destructively. As a result, since it is not necessary to take out and inspect each product flowing on the production line, it is possible to automatically and efficiently carry out a full quantity inspection by nondestructive inspection.

  The weight inspection apparatus according to the second invention is the weight inspection apparatus according to the first invention, wherein each component included in the object to be inspected based on the measurement result in the measurement unit and the calculation result in the content ratio calculation unit. A component weight calculation unit for calculating the weight value of

  Here, the weight value for each component contained in the inspection object is calculated by multiplying the actual weight value of the inspection object and the content ratio.

  Thereby, about the to-be-inspected object containing a some component, the weight value for every component is actually computable. As a result, for example, it is possible to easily check whether or not the components that should be contained in the vitamin preparation or the like are mixed in a predetermined range.

  A weight inspection apparatus according to a third aspect of the present invention is the weight inspection apparatus according to the first or second aspect of the present invention, wherein the weighing unit is provided inside the casing that covers the spectroscopic unit.

  Here, a measuring unit is provided inside a casing that forms the outer shell of the spectroscopic unit.

  As a result, the measured value of the inspection object can be obtained simply by placing the inspection object on the weighing unit disposed in the housing of the spectroscopic unit, and at the same time, the transmitted light of the terahertz wave irradiated in the spectroscopic unit By detecting a spectral spectrum such as, it is possible to obtain a weight value for each of a plurality of components contained in the inspection object. As a result, it is possible to easily obtain the weight value of the entire object to be inspected and the weight values for each of the plurality of components contained therein with a simple configuration.

  A weight inspection apparatus according to a fourth aspect of the present invention is the weight inspection apparatus according to the first or second aspect of the present invention, wherein the spectroscopic unit is disposed above or on the side of the weighing unit.

  Here, a spectroscopic unit for irradiating the test object with a terahertz wave and detecting a spectroscopic spectrum is disposed above or near the side of the measuring unit for measuring the test object.

  As a result, it is possible to obtain the measured value of the inspected object simply by placing the inspected object on the measuring unit, and at the same time, the transmitted light of the terahertz wave irradiated in the spectroscopic unit arranged in the vicinity of the measuring unit, etc. By detecting the spectral spectrum, it is possible to obtain the weight value for each of the plurality of components contained in the inspection object. As a result, it is possible to easily obtain the weight value of the entire object to be inspected and the weight values for each of the plurality of components contained therein with a simple configuration.

  A weight inspection apparatus according to a fifth aspect of the present invention is the weight inspection apparatus according to any one of the first to fourth aspects of the present invention, further comprising a storage unit that stores spectrum data of a plurality of components.

  Here, a storage unit is further provided for storing, as a database, spectral data corresponding to a large number of components used for comparison with the spectral spectrum of the inspected object acquired in the spectroscopic unit.

  As a result, the spectral data of the component contained in the inspection object is automatically selected from the many spectral data stored in the storage unit for the spectral spectrum of the inspection object acquired in the spectroscopic section. Thus, the content ratio of each component can be obtained. As a result, it is possible to cope with a case where inspection is performed using a wide range of substances as inspection objects, and highly accurate weight detection can be performed.

  A weight inspection apparatus according to a sixth aspect of the present invention is the weight inspection apparatus according to any one of the first to fifth aspects, wherein the object to be inspected is a food or a medicine.

  Here, for example, foods and medicines including tablets such as vegetables, fruits, side dishes, packaged products, and vitamins are used as the inspection objects.

  Thereby, for example, it is possible to accurately and easily perform an inspection such as whether or not the amount of each ingredient contained in a tablet such as a seasoning additive or a vitamin preparation in a tablet is within a predetermined range. it can.

  A weight inspection apparatus according to a seventh aspect is the weight inspection apparatus according to any one of the first to sixth aspects, wherein the object to be inspected is a liquid or a powder.

  Here, a liquid or powder is used as a substance to be inspected.

  Thus, unlike a fixed object, even a liquid or powder object whose shape changes when inspected, the weight value for each component contained in the object can be detected with high accuracy. .

  According to the weight inspection apparatus of the present invention, it is possible to easily confirm the weight values and presence / absence of a plurality of components contained in the inspection object without losing the value of the product simply by placing the inspection object on the weighing unit. Therefore, for example, it is possible to automatically carry out non-destructive inspection of the amount of each ingredient contained in a confectionery product seasoning additive and vitamin tablets.

  The weight inspection apparatus 10 according to an embodiment of the present invention will be described below with reference to FIGS.

[Configuration of weight inspection apparatus 10 as a whole]
As shown in FIGS. 1 and 2, the weight inspection apparatus 10 according to the present embodiment measures the inspection object X and calculates the content ratios and weight values of a plurality of components included in the inspection object X. The apparatus mainly includes an inspection unit (spectral unit) 11, a weighing unit 12, a display unit 15, and a control unit 20.

  In this embodiment, the substance used as the inspection object X is a solid food.

  The inspection unit 11 is disposed above the weighing table 12a on which the inspection object X is placed and is supported by the housing 11a, and applies a terahertz wave, which is a type of electromagnetic wave, to the inspection object X. It is an inspection device that irradiates and detects the reflected wave as an absorption spectrum including a plurality of wavelength components. The inspection unit 11 includes a terahertz wave irradiation unit 13 and a terahertz wave detection unit 14 inside.

  The terahertz wave irradiation unit 13 irradiates the inspected object X placed on the weighing table 12a with terahertz waves from above.

  The terahertz wave detection unit 14 detects the reflected wave of the terahertz wave irradiated to the inspection object X from the terahertz wave irradiation unit 13 as an absorption spectrum including a plurality of wavelength components, and controls the control unit 20 described later. Send detection results.

  The weighing unit 12 is a weighing device in which a load cell (not shown) is mounted, and measures the inspection object X placed on the weighing table 12a. In addition, the weighing unit 12 transmits a measurement result for each inspection object X to the control unit 20.

  The display unit 15 is a touch panel LCD monitor, which is controlled by the control unit 20, and displays the measurement result and the weight value of each component sent from the measurement unit 12 to the control unit 20 (FIG. 4 (a) and FIG. 4 (b)). The display unit 15 transmits information directly input via the display screen 15 a to the control unit 20.

  The control unit 20 is connected to the weighing unit 12, the terahertz wave irradiation unit 13, the terahertz wave detection unit 14, the display unit 15, and the like, and forms a functional block 30 to be described later to perform component inspection of the inspection object X. . The control unit 20 will be described in detail later.

[Control unit 20]
As shown in FIG. 2, the control unit 20 includes a CPU 21 and a ROM 22, a RAM 23, and a CF (Compact Flash (registered trademark)) (storage unit) 25 as main storage units controlled by the CPU 21.

  The CF 25 stores an absorption spectrum data 25a (see FIG. 6) for each of a plurality of components included in the inspection object X placed on the weighing table 12a and an inspection result log file that stores the inspection result of the inspection object X. 25b etc. are stored.

  And in the control part 20, CPU21 reads various programs, such as an inspection program stored in these memory | storage parts, and forms the functional block 30 (refer FIG. 3), The some contained in the to-be-inspected object X is included. Perform component testing.

  The control unit 20 also includes a display control circuit that controls data display on the display unit 15, a key input circuit that captures key input data from the touch panel of the display unit 15, and an I for performing control of data printing in a printer (not shown). / O port, USB as external input terminal, etc. The functional block 30 described above will be described in detail later.

  The storage units such as the CPU 21, ROM 22, RAM 23, and CF 25 store the above-described various programs and spectrum data 25a for each of a plurality of components included in the inspection object X, and bus lines such as an address bus and a data bus. Are connected to each other.

  The control unit 20 is connected to the measuring unit 12, the terahertz wave irradiating unit 13, and the terahertz wave detecting unit 14, and receives the measurement result in the measuring unit 12, the detection result in the terahertz wave detecting unit 14, and the like. The component inspection described later is performed.

[Function block 30]
As shown in FIG. 3, the functional block 30 formed in the control unit 20 is configured to include a content ratio calculation unit 31, a component weight calculation unit 32, and a determination unit 33.

  In the present embodiment, as shown in FIG. 6, a case will be described in which the inspection object X is composed of two components, polyethylene and glucose.

The content ratio calculation unit 31 firstly stores absorption spectrum data including a plurality of wavelength components detected by the terahertz wave detection unit 14 included in the inspection unit 11 (see FIG. 5) and each component stored in advance in the CF 25. Is compared with the spectrum data 25a (see FIG. 6). Then, it is calculated how many percent of the spectrum data 25a of each component is contained to form a graph of the absorption spectrum detected by the terahertz wave detection unit 14. Specifically, how much% each of the spectra indicating the two components (polyethylene and glucose) contained in the object to be inspected X is combined to obtain a graph indicating the absorption spectrum detected by the terahertz wave detection unit 14 is calculated. To do. For example, at a position where the wave number (cm ⁻¹ ), which is the largest peak of the absorption spectrum of glucose, is about 90, the absorbance reaches nearly 8.0. On the other hand, for polyethylene, at the same wave number of about 90, the absorbance is about 0.2. Then, as shown in FIG. 5, the absorption spectrum of the inspection object X is about 0.6 at a position where the wave number is about 90. As a result, when the polyethylene content ratio is 95.0% and the glucose content ratio is 5.0%, the absorbance near the wave number 90 is about 0.6, and as shown in FIG. It can be seen that an absorption spectrum (see FIG. 5) of the detected object X can be formed.

  The component weight calculation unit 32 uses the content ratio of each component calculated by the content ratio calculation unit 31 (polyethylene 95.0%, glucose 5.0%) of the test object X measured by the measurement unit 12. Using the total weight, the weight value for each component is calculated. For example, when the measured value of the inspection object X is 100 mg, the measured values of 95.0 mg of polyethylene and 5.0 mg of glucose are obtained.

  The determination unit 33 determines whether these values are within a predetermined range based on the content ratio or weight value of each component included in the inspection object X calculated by the content ratio calculation unit 31 or the component weight calculation unit 32. Determine whether or not. For example, when a tablet such as a vitamin preparation is used as the object to be inspected X, it can be easily inspected whether a predetermined amount of the contained component is contained. In addition, when using a packaged food product as the inspection object X, whether or not the contained component contained therein is mixed, depending on whether or not the component appears as an absorption spectrum, It can be easily determined.

<Method of component inspection contained in the object X>
In the present embodiment, component inspection contained in the inspection object X is performed according to the flowchart shown in FIG.

  That is, first, in step S1, the inspection object X is placed on the weighing table 12a of the weighing unit 12, and the inspection object X is weighed. In addition, while performing this step S2 to step S4, the "under investigation" display as shown to Fig.4 (a) is displayed on the display screen 15a of the display part 15. FIG.

  Next, in step S2, a terahertz wave is irradiated to the inspection object X from the terahertz wave irradiation unit 13 installed above the weighing table 12a.

  Next, in step S3, the terahertz wave detection unit 14 detects a reflected wave from the inspection object X as an absorption spectrum.

  Next, in step S4, the spectrum data 25a of the component estimated to be included in the inspection object X is extracted from the spectrum data 25a corresponding to a plurality of components stored in advance in the storage unit (CF25). Compared with the detection result in the terahertz wave detection unit 14.

  Next, in step S5, the content ratio of each component extracted from the CF 25 is calculated. Here, if the spectral data 25a of the extracted component is compared with the absorption spectrum of the reflected wave from the inspection object X, and if the influence of the wavelength of the specific component is large, the spectral data of the specific component A graph of the detected absorption spectrum is formed by combining 25a as a main component and spectrum data 25a of other components.

  Next, in step S6, the weight value for each component is calculated using the content ratio of each component calculated in step S5 and the measured value acquired in step S1. For example, in the case of this embodiment, the total weight of the test object X is 100 mg, and the content ratio of glucose and polyethylene is 5:95. For this reason, the weight value of each component is calculated as glucose 5.0 mg and polyethylene 95.0 mg. At this time, as shown in FIG. 4B, the display screen 15a of the display unit 15 displays the product name, total weight value, weight value of each component, and the like of the inspection object X.

  Next, in step S7, it is determined whether the content ratio or weight value of each component calculated in step S5 and step S6 is within a predetermined range. Here, when these content ratios and weight values are within a predetermined range determined for each inspection object X as a product, the process proceeds to step S8 and is determined as a normal product. On the other hand, if it is out of the predetermined range, the process proceeds to step S9 where it is determined as a defective product. The inspection result of the inspection object X is stored as the inspection result log file 25b in the storage unit (CF25) in the control unit 20 described above.

  In the present embodiment, as described above, by simply placing the inspection object X on the weighing table 12a of the weighing unit 12, the content ratio of each component contained together with the total weight value of the inspection object X as it is. And the weight value can be easily calculated. For this reason, when it is used by being incorporated in a production line or the like, a non-destructive component inspection can be efficiently performed on a large amount of the inspection object X.

[Features of the weight inspection apparatus 10]
(1)
In the weight inspection apparatus 10 of the present embodiment, as shown in FIGS. 1 and 2, the weighing unit 12 for weighing the inspection object X, and the inspection object X are irradiated with terahertz waves and the reflected waves are irradiated. The inspection unit 11 to be detected as an absorption spectrum, and as shown in FIG. 3, the absorption spectrum acquired in the inspection unit 11 and the spectrum data 25a of each component are compared, and each component contained in the inspection object X is contained. A content ratio calculation unit 31 that calculates the ratio.

  As a result, the total weight value of the inspection object X is obtained by weighing, and the absorption spectrum is acquired by detecting the reflected wave of the terahertz wave and compared with the spectrum data 25a of each component included in the inspection object X. The content ratio of each component can be easily calculated.

  As a result, in the production line of the inspection object X, it is possible to easily carry out a full inspection by non-destructive inspection object X by determining whether or not the value of the content ratio is within an appropriate range. It becomes possible.

(2)
In the weight inspection apparatus 10 of the present embodiment, as shown in FIG. 3, the content ratios of a plurality of components included in the inspected object X calculated by the content ratio calculation unit 31 described above and measured by the measurement unit 12. The weight value of each component is calculated using the measured value.

  Accordingly, the weight value for each of the plurality of components included in the inspection object X can be easily calculated using the total weight value and the content ratio of the inspection object X. As a result, not only the content ratio but also the weight of each component is calculated, and whether or not the weight value for each component is appropriate can be implemented as a nondestructive inspection.

(3)
In the weight inspection apparatus 10 of the present embodiment, as shown in FIG. 1, the weighing unit 12 is disposed inside a housing 11 a that supports the inspection unit 11 disposed above the weighing unit 12.

  Thereby, the reflected light of the terahertz wave is detected while the object X is measured by the measuring unit 12 only by placing the object X on the weighing table 12a in the housing 11a, and the object to be inspected is detected. The content ratio of each component contained in the product X can be calculated.

(4)
In the weight inspection apparatus 10 of the present embodiment, as shown in FIG. 1, the inspection unit 11 that irradiates the inspected object X with the terahertz wave and detects the reflected wave is disposed above the measuring unit 12. .

  As a result, the measurement of the inspection object X and the calculation of the component ratio by irradiation and detection of the terahertz wave can be performed almost simultaneously. As a result, even when installed in the production line of the inspected object X, the non-destructive component inspection can be efficiently performed.

(5)
In the weight inspection apparatus 10 of this embodiment, as shown in FIG. 2, spectrum data 25 a corresponding to a plurality of components included in the inspection object X is stored in advance in the CF 25 which is a storage unit in the control unit 20. ing.

  Thereby, the content ratio of each component can be easily calculated by acquiring the absorption spectrum of the inspection object X and referring to the spectrum data 25a in the storage unit (CF25).

(6)
In the weight inspection apparatus 10 of the present embodiment, a solid food is used as the inspection object X.

  Thereby, it is possible to easily check whether or not the display of each component contained in the food product matches the actual content ratio and content weight, and eliminate defective products different from the component display.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the above embodiment, as illustrated in FIG. 3 and the like, the weight inspection apparatus 10 has been described with an example in which the weight value of each component is calculated after obtaining the content ratio of each component included in the inspection object. However, the present invention is not limited to this.

  For example, an inspection apparatus that only calculates the content ratio of each component without calculating the weight value of each component may be used.

  In this case, for example, the contained components in the packaged food can be easily detected, so that the impurity contamination inspection can be performed simultaneously with the measurement of the inspection object. Furthermore, in this case, since it is possible to easily check whether the content ratio of various components contained in the vitamin preparation or the like is within a predetermined range, the content ratio such as the vitamin preparation is determined. Defective products can be easily detected.

(B)
In the above embodiment, the component X is placed on the weighing table 12a of the weighing unit 12 by irradiating and detecting the terahertz wave while measuring the sample X in a stationary state. An example of performing inspection has been described. However, the present invention is not limited to this.

  For example, as shown in FIGS. 9 and 10, a weight inspection apparatus 110 including a conveyance unit 112 that conveys the inspection object X in a predetermined direction may be used. In this case, the object to be inspected X is irradiated with the terahertz wave while being transported in a predetermined direction in the casing 111 by the transport section 112 to detect the reflected wave, and a predetermined wave of the transport section 112 in the casing 111 is detected. The inspection object X is weighed by the weighing unit 114 arranged at the position. Thereby, the component inspection of the inspection object X can be performed while the inspection object X is conveyed in a predetermined direction.

(C)
In the said embodiment, the example which performs a component test | inspection using the to-be-tested object X which consists of two components (polyethylene and glucose) was given and demonstrated. However, the present invention is not limited to this.

  For example, as shown in FIG. 11, component inspection may be performed using an inspection object including three or more types of components 1 to 3. In this case, the content ratio and weight value of each component may be calculated by referring to absorption spectrum data of three or more types of components stored in a storage unit such as CF.

  Furthermore, as shown in FIG. 11, a defect determination may be displayed on the upper right of the display screen 115a because the mixing ratio of component 2 is originally 15%, which is 10%.

(D)
In the said embodiment, the example which performs a component test | inspection using a solid object as the to-be-inspected object X was given and demonstrated. However, the present invention is not limited to this.

  For example, as shown in FIG. 12A, the component inspection can be performed using a liquid as the inspection object X1, and as shown in FIG. 12B, the powder as the inspection object X2. It is also possible to carry out a component inspection using the above.

  In this case, it is preferable to perform the inspection by irradiating an appropriate wavelength according to the form of the object to be inspected.

(E)
In the above-described embodiment, as illustrated in FIG. 2, the spectral data 25a of each component included in the inspection object X has been described as an example stored in a storage unit such as the CF 25 in advance. However, the present invention is not limited to this.

  For example, component inspection may be performed using spectrum data for each component acquired from the outside when inspecting the inspection object.

(F)
In the embodiment described above, an example in which the inspection unit 11 storing the terahertz wave irradiation unit 13 and the terahertz wave detection unit 14 is disposed above the weighing unit 12 that measures the inspection object X has been described. However, the present invention is not limited to this.

  For example, a configuration in which a terahertz wave irradiating unit or a terahertz wave detecting unit is disposed on the side of a measuring unit that measures an object to be inspected may be used.

(G)
In the embodiment described above, an example in which the terahertz wave detection unit 14 detects the reflected wave of the terahertz wave irradiated from the terahertz wave irradiation unit 13 to the inspection object X has been described. However, the present invention is not limited to this.

  For example, a terahertz wave detecting unit may be disposed below the measuring unit so as to detect a transmitted wave of the terahertz wave irradiated to the inspection object from the terahertz wave irradiating unit.

  Alternatively, the terahertz wave irradiating unit may be arranged on the side of the object to be inspected, and the terahertz wave detecting unit for detecting the transmitted wave may be arranged on the opposite side.

(H)
In the said embodiment, the example which performs a component test | inspection using the terahertz wave whose wavelength is 0.3T-10.0T (Hz) was given and demonstrated. However, the present invention is not limited to this.

  For example, component inspection may be performed using millimeter waves, submillimeter waves, infrared rays, X-rays, or the like having different wavelengths, or a combination thereof may be performed.

  Since the weight inspection apparatus of the present invention can easily obtain the weights of a plurality of components contained in the inspection object by simply placing the inspection object on the weighing unit without impairing the value of the product, for example, a bag Because it has the effect of automatically performing non-destructive inspections of specific ingredients contained in stuffed products and inspections of the amount of each ingredient contained in tablets such as vitamins, electromagnetic waves containing radiation Can be widely applied to various inspection apparatuses that perform inspection by detecting transmitted light / reflected light.

The perspective view which shows the structure of the whole weight inspection apparatus which concerns on one Embodiment of this invention. The block diagram which shows the structure of the control block comprised inside the weight inspection apparatus of FIG. The block diagram which shows the functional block formed in the control part of FIG. (A), (b) is a front view which shows the display screen displayed on the monitor part of the weight inspection apparatus of FIG. The graph which shows the absorption spectrum for every wavelength component of a to-be-inspected object acquired by the weight inspection apparatus of FIG. The graph which shows the absorption spectrum for every wavelength component regarding the some component contained in the to-be-inspected object previously stored in the weight inspection apparatus of FIG. The graph for calculating the content ratio of the some component contained in a to-be-inspected object based on the graph of FIG. 5 and FIG. The flowchart which shows the flow of the component inspection by the weight inspection apparatus of FIG. The perspective view which shows the structure of the whole weight inspection apparatus which concerns on other embodiment of this invention. FIG. 9 is a front sectional view showing an internal configuration of the weight inspection apparatus in FIG. 8. The front view which shows the display screen displayed on the monitor part of the weight inspection apparatus which concerns on further another embodiment of this invention. (A), (b) is a perspective view which shows the form of the to-be-inspected object inspected in the weight inspection apparatus which concerns on further another embodiment of this invention.

Explanation of symbols

10 Weight inspection device 11 Inspection unit (spectral part)
DESCRIPTION OF SYMBOLS 11a Case 12 Weighing part 13 Terahertz wave irradiation part 14 Terahertz wave detection part 15 Display part 15a Display screen 20 Control part 21 CPU
22 ROM
23 RAM
25 CF (Compact Flash (registered trademark))
25a Absorption spectrum data for each component 25b Inspection result log file 30 Functional block 31 Content ratio calculation unit 32 Component weight calculation unit 33 Judgment unit 110 Weight inspection device 111 Housing 112 Transport unit 114 Weighing unit X Inspected object

Claims (7)

A weighing unit for measuring the total weight of the object to be inspected;
A spectroscopic unit that irradiates the inspection object with a terahertz wave, and detects a transmission amount or a reflection amount of the terahertz wave as a spectral spectrum including a plurality of wavelength components;
A content ratio calculation unit that compares the spectral spectrum obtained in the spectroscopic unit with spectral data corresponding to a plurality of components, and calculates a content ratio of each component included in the inspection object;
A weight inspection device. Based on the measurement result in the measurement unit and the calculation result in the content ratio calculation unit, a component weight calculation unit that calculates the weight value of each component contained in the inspection object,
In addition,
The weight inspection apparatus according to claim 1. The weighing unit is provided inside a housing that covers the spectroscopic unit,
The weight inspection apparatus according to claim 1 or 2. The spectroscopic unit is disposed above or on the side of the weighing unit,
The weight inspection apparatus according to claim 1 or 2. A storage unit for storing spectral data of the plurality of components;
The weight inspection apparatus according to any one of claims 1 to 4. The inspection object is food or medicine,
The weight inspection apparatus according to any one of claims 1 to 5. The inspection object is a liquid or powder,
The weight inspection apparatus according to any one of claims 1 to 6.

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