WO2016002354A1 - Measurement device, measurement method, and program - Google Patents

Abstract

A measurement device (10) having: a housing (100); an opening (102) provided in a portion of the housing (100); a transmission member (110) that is positioned within the opening (102), composes a portion of the housing (100), and transmits light of a first wavelength; a light emission unit (120) that is disposed inside the housing (100), irradiates light including the first wavelength, and is disposed in an orientation such that the optical axis thereof passes through the transmission member (110); a light detection unit (140) that is disposed within the housing (100) in an orientation such that the optical axis thereof passes through the transmission member (110) and that detects the light of the first wavelength; a reflection part (200) that reflects light of the first wavelength; and a movement unit (201) for moving the reflection part (200) and positioning the same in a first position not overlapping the optical axis of the light emission unit (120) or a second position overlapping the optical axis of the light emission unit (120) at which the light emitted by the light emission unit (120) is reflected in the direction of the light detection unit (140).

Description

Measuring apparatus, measuring method, and program

The present invention relates to a measuring device, a measuring method, and a program.

One of the methods for detecting a specific component (detection target) included in the measurement target is to irradiate the measurement target with light having a wavelength absorbed by the component and measure the amount of light absorbed by the measurement target. is there. For example, Patent Document 1 discloses an apparatus for measuring a blood sugar level in blood. In this apparatus, a light source, a light receiving element, and a waveguide are provided on the upper surface of the base portion. And a part of waveguide is exposed to the lower surface of a base part, and the light which the light source produced | generated from this part is irradiated. In addition, reflected light is incident on this part. The incident reflected light is guided to the light receiving element.

Further, Patent Document 2 describes that light is irradiated in an oblique direction with respect to the surface of the skin, and a plurality of light receiving portions are arranged obliquely and spaced apart. The technique described in Patent Document 2 is intended to measure glucose contained in skin and blood.

JP 2011-245069 A JP 2005-413491 A

By calculating the amount of change in the intensity of the light based on the intensity of the light of the predetermined wavelength emitted by the light emitting means and the intensity of the light reflected by the measurement object, The amount of absorption can be calculated. Based on this absorption amount, the amount of the detection target can be calculated.

By the way, the light emitted from the light emitting means changes in intensity (light quantity, etc.) or shifts in wavelength depending on the aging of the light emitting means and the surrounding environment (temperature, humidity, etc.). If these fluctuations are not taken into account, the accuracy of the calculation result is deteriorated. This invention makes it a subject to solve the said subject.

According to the present invention,
A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
Is provided.

Moreover, according to the present invention,
A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus has the control of the light emitting means, the light detecting means, and the moving means, and accepts an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A measurement method that performs both of the above is provided.

Moreover, according to the present invention,
A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus having the above control the light emitting means, the light detecting means, and the moving means, and accepting an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A program for executing both of the above is provided.

According to the present invention, it is possible to accurately calculate the amount of absorption of light of a predetermined wavelength in the measurement target.

The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.

It is a figure which shows notionally an example of the hardware constitutions of the measuring apparatus of this embodiment. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment. An example of the perspective schematic diagram of the measuring device of this embodiment is shown. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment. It is a flowchart which shows an example of the flow of a process of the measuring device of this embodiment. It is a flowchart which shows an example of the flow of a process of the measuring device of this embodiment. It is a flowchart which shows an example of the flow of a process of the measuring device of this embodiment. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment. It is a schematic diagram which shows an example of a structure of the measuring apparatus of this embodiment.

First, an example of the hardware configuration of the apparatus according to the present embodiment will be described. Each unit included in the apparatus according to the present embodiment includes a CPU (Central Processing Unit) of an arbitrary computer, a memory, a program loaded in the memory (a program stored in the memory from the stage of shipping the apparatus in advance, a CD ( Compact Disc) and other storage media and programs downloaded from servers on the Internet), storage units such as hard disks that store the programs, and any combination of hardware and software, mainly a network connection interface It is realized by. It will be understood by those skilled in the art that there are various modifications to the implementation method and apparatus.

FIG. 1 is a diagram conceptually illustrating an example of a hardware configuration of an apparatus according to the present embodiment. As illustrated, the apparatus according to the present embodiment includes, for example, a CPU 1A, a memory 2A, an I / O 3A, a display control unit 4A, a display 5A, an operation receiving unit 6A, and an operation unit 7A that are connected to each other via a bus 8A. . In addition, although not shown in the figure, a program for realizing the components shown in the figure loaded in the memory 2A, a storage unit such as a hard disk for storing the program (storage: auxiliary storage device), wired and / or wireless Internet, Other elements such as a network connection interface (communication I / F (InterFace)), a microphone, a speaker, etc., which are connected to a network such as a LAN (Local Area Network) and communicate with other electronic devices Good.

CPU 1A controls the entire computer of the apparatus together with each element. The memory 2A includes an area for storing programs for operating the computer, various application programs, various setting data used when the programs operate. Memory 2A includes an area for temporarily storing data, such as a work area for operating a program.

The display 5A is, for example, a display device (LED (Light Emitting Diode) display, liquid crystal display, organic EL (Electro Luminescence) display, etc.). The display 5A may be a touch panel display integrated with a touch pad. The display control unit 4A reads data stored in a VRAM (Video RAM) or the like, performs predetermined processing on the read data, and then sends the data to the display 5A to display various screens. The operation reception unit 6A receives various operations via the operation unit 7A. The operation unit 7A includes operation keys, operation buttons, switches, a jog dial, a touch panel display, a keyboard, and the like. The I / O 3A is an input for inputting data from the external apparatus to the apparatus of the present embodiment, and an output for outputting data from the apparatus of the present embodiment to the external apparatus.

<First Embodiment>
First, an outline of the present embodiment will be described. Each time the measurement object is irradiated with light of a predetermined wavelength using the light emitting means and the intensity of the reflected light is measured, the intensity of the light of the predetermined wavelength emitted by the light emission means is measured, and the measurement object is based on these data The measurement accuracy can be improved by calculating the absorption amount of light having a predetermined wavelength.

In this case, it is necessary to have a light receiving means for receiving the light emitted from the light emitting means and reflected from the object to be measured, and a light receiving means for receiving the light emitted from the light emitting means without reflecting the light from the measurement object. However, the provision of two light receiving means increases the cost burden. Moreover, since it is necessary to incorporate many members in the apparatus, this hinders the downsizing of the apparatus.

Therefore, the measuring apparatus according to the present embodiment receives the light reflected by the measurement object by the light emitted from the light emitting means by the pair of one light emitting means and one light receiving means, and measures the intensity of the light. Both the measurement and the second measurement in which the light emitted from the light emitting means is received without being reflected by the measurement object and the intensity of the light is measured are performed. Details will be described below.

FIG. 2 is a schematic diagram showing an example of the configuration of the measuring apparatus 10 according to the present embodiment. The measuring apparatus 10 according to the present embodiment includes a housing 100, a transmissive member 110, a light emitting unit 120, a light detecting unit 140, a reflecting unit 200, and a moving unit 201.

FIG. 4 shows an example of a schematic perspective view of the measuring apparatus 10 according to this embodiment. The measuring apparatus 10 shown in FIG. 4 includes a casing 100, a display 11, an operation button 12, a contact portion 13 that makes a measurement object contact, and a power button 14. The contact portion 13 corresponds to the transmission member 110 shown in FIG.

The measurement device 10 is a device for measuring, for example, a living body as a measurement target, and for example, measuring a sugar content (for example, glucose) contained in an interstitial fluid of dermal tissue as a detection target. In this case, the first wavelength is in the near infrared region (for example, 1200 nm or more and 3000 nm or less). The measuring device 10 is used in a state where the skin of a living body (measurement target) is brought into contact with the transmission member 110 (contact portion 13). Note that the measurement object and the detection object are not limited to this. The first wavelength varies depending on the detection target.

The housing 100 is formed using, for example, resin or metal. An opening 102 that connects the inside and the outside of the housing 100 is provided on one surface of the housing 100. The opening 102 is blocked by the transmissive member 110. In other words, a part of the housing 100 is configured by the transmissive member 110. The housing 100 may be composed of a plurality of parts.

The transmission member 110 is provided in a part of the casing 100. The transmissive member 110 is a plate-shaped member made of, for example, glass or resin, and transmits light having the first wavelength. The transmissive member 110 may be a flat plate or may be slightly curved.

The light emitting unit 120 is disposed inside the housing 100 and emits light including the first wavelength. The light emitting unit 120 includes a light emitting element such as an LED or a laser diode. This light source preferably emits light of the first wavelength stronger than light of other wavelengths.

The light emitting unit 120 is arranged in a direction in which the optical axis passes through the transmission member 110. For example, the light emitting unit 120 may be disposed in a direction in which the optical axis is inclined with respect to the outer surface of the transmissive member 110. In this case, when the living body skin is brought into contact with the transmissive member 110 of the housing 100, the optical axis of the light emitting unit 120 is inclined with respect to the skin.

The light detection unit 140 is disposed inside the housing 100 and detects light of the first wavelength. Note that the light detection unit 140 may further be able to measure the intensity of light of the first wavelength. The light detection unit 140 includes a photoelectric conversion element such as a photodiode, for example. This photoelectric conversion element preferably has higher sensitivity to light of the first wavelength than sensitivity of light of other wavelengths.

The light receiving surface of the light detection unit 140 is disposed obliquely with respect to the outer surface of the transmission member 110. Preferably, the light detection unit 140 is arranged in a direction to receive the reflected light reflected by the measurement target that is emitted from the light emitting unit 120 and is in contact with the transmission member 110. That is, the light detection unit 140 is arranged in a direction in which the optical axis passes through the transmission member 110. For example, the light detection unit 140 may be arranged in a direction in which the optical axis is inclined with respect to the outer surface of the transmission member 110. The optical axis of the light detection unit 140 intersects with the optical axis of the light emitting unit 120, for example, outside the transmission member 110 (intersection α). The position of the intersection α is, for example, a position where the distance from the outer surface of the transmission member 110 is about several mm or less. The angle θ formed by the two optical axes is, for example, 60 ° or more and 120 ° or less. The angle formed by the optical axis of the light emitting unit 120 with respect to the outer surface of the transmission member 110 and the angle formed by the optical axis of the light detection unit 140 with respect to the outer surface of the transmission member 110 are preferably equal to each other. The optical axis of the light detection unit 140 is defined as a line that passes through the center of the light receiving surface of the light detection unit 140 and is perpendicular to the light receiving surface of the light detection unit 140, for example.

If the light emitting unit 120 and the light detecting unit 140 have such a relationship, when the light emitting unit 120 emits light with the measurement target in contact with the transmission member 110, the reflected light reflected by the measurement target is efficiently emitted. The detection unit 140 can receive light.

It should be noted that there may be some deviation between the optical axes of the light emitting unit 120 and the light detecting unit 140, and these optical axes may not completely intersect. Further, the intersection α may be located inside the transmission member 110. In such a case, the measurement accuracy is somewhat worse, but the desired measurement can be realized.

The reflection unit 200 reflects light having the first wavelength. The reflection unit 200 includes a material (pigment or the like) that reflects light having the first wavelength. The reflection unit 200 is formed in a plate shape using, for example, resin or metal. A coating film or sheet in which a material that reflects light of the first wavelength is dispersed may be provided on the surface of the reflection unit 200. Moreover, the material which reflects the light of the 1st wavelength may be disperse | distributed in reflection part 200 itself.

The reflection unit 200 only needs to have a reflectivity that allows the first wavelength light to be guided to the light detection unit 140 without being spot-reflected. For example, the reflection unit 200 may be provided with a diffusing plate or the like provided with unevenness or a diffusing material on the surface. As a result, when the reflectance of the reflection unit 200 is high, if the amount of light emitted from the light emitting unit 120 is uneven, the light received by the light detection unit 140 is likely to vary. Therefore, the variation in detection can be reduced by reducing the unevenness of the light amount. Further, when the reflectance of the reflection unit 200 is low or high, fine adjustment can be performed by adjusting the gain in the analysis unit 160.

Note that the reflection unit 200 may be configured to irregularly reflect light having the first wavelength. For example, irregular reflection may be realized by adjusting the arrangement of the particle diameter of the material that reflects the light having the first wavelength.

The moving unit 201 moves the reflecting unit 200. Then, the moving unit 201 overlaps the reflecting unit 200 with the first position that does not overlap the optical axis of the light emitting unit 120 or the optical axis of the light emitting unit 120, and the light emitted from the light emitting unit 120 is reflected by the light detecting unit 140. It is located at a second position that reflects in the direction. The moving unit 201 may be able to position the reflecting unit 200 at one or more other positions.

The moving unit 201 includes a motor, and drives the motor to repeatedly move the reflecting unit 200 in a predetermined trajectory. For example, the moving unit 201 may move between the first position and the second position by sliding or rotating the reflecting unit 200. For example, the reflection unit 200 may be moved by the moving unit 201 using a known shutter mechanism or the like.

FIG. 2 shows a state where the reflection unit 200 is located at the first position, and FIG. 3 shows a state where the reflection unit 200 is located at the second position. 2 and 3, the reflecting unit 200 and the moving unit 201 are located inside the housing 100, but the reflecting unit 200 is located outside the housing 100, for example, along the outer surface of the housing 100. Also good. Further, at least a part of the moving unit 201 may be located outside the housing 100, and the reflecting unit 200 may be moved along the outer surface of the housing 100 to be located at the first position or the second position. Good.

When the reflection unit 200 is located at the second position (see FIG. 3), the first wavelength light emitted by the light emitting unit 120 is reflected by the reflection unit 200 before passing through the transmission member 110. In this case, even if the measurement object is brought into contact with the transmissive member 110, the light does not reach the measurement object. In addition, when the reflection part 200 is comprised so that the light of a 1st wavelength may be reflected irregularly, the said light will reflect irregularly as shown in figure. The light detection unit 140 receives the reflected light of the light reflected by the reflection unit 200 and measures the intensity of the light.

When the reflection unit 200 is configured to diffusely reflect the light having the first wavelength, the direction in which the light having the first wavelength emitted by the light emitting unit 120 is reflected by the reflection unit 200 and the position of the light detection unit 140 are fine. Even without making any adjustment, the light detection unit 140 can receive the reflected light of the light reflected by the reflection unit 200 with high probability. In this case, the degree of freedom in design among the reflection unit 200, the light emitting unit 120, and the light detection unit 140 located at the second position is preferably increased. Note that the reflection unit 200 may be configured not to irregularly reflect light having the first wavelength. In this case, the reflected light of the first wavelength emitted from the light emitting unit 120 reflected by the reflecting unit 200 is detected by adjusting the orientation of the reflecting surface of the reflecting unit 200 located at the second position. The unit 140 can receive light.

When the reflecting unit 200 is located at the second position and the reflecting unit 200 is located outside the housing 100, the first wavelength light emitted from the light emitting unit 120 is transmitted through the transmissive member 110. Reflected by the reflector 200. And the effect | action similar to the above is implement | achieved. In the case of the example, since the transmissive member 110 is covered with the reflecting portion 200, the measurement target cannot be brought into contact with the transmissive member 110.

On the other hand, when the reflection unit 200 is located at the first position (see FIG. 2), the first wavelength light emitted by the light emitting unit 120 passes through the transmission member 110 and reaches the outside of the housing 100. When the measurement target is in contact with the transmission member 110, the light of the first wavelength emitted from the light emitting unit 120 reaches the human body that is the measurement target. The light enters at least the dermis tissue of the skin and is scattered by cell walls and the like. At least a part of the scattered light reaches the inside of the housing 100 via the transmission member 110 and is detected by the light detection unit 140.

In the optical path until the light emitted from the light emitting unit 120 is detected by the light detection unit 140, a part of the light having the first wavelength is a specific component in the skin, for example, a sugar content such as glucose contained in the interstitial fluid. Is absorbed by. Therefore, the amount of the specific component in the skin can be calculated based on the intensity of the first wavelength light detected by the light detection unit 140.

The intensity of the first wavelength light measured in a state where the reflection unit 200 is located at the second position is D0, and the intensity of the first wavelength light measured in a state where the reflection unit 200 is located in the first position is D1. Then, for example, D1 is corrected by the equation D1 / D0. Accordingly, D1 can be corrected based on the variation of the light emitting unit 120. Then, the amount of the detection target in the measurement target can be calculated by substituting the corrected value (D1 / D0) into a predetermined function.

Depending on the configuration of the transmissive member 110, the state of the transmissive member 110 varies depending on aging, the surrounding environment (temperature, humidity, etc.), etc., and the transmittance at which the first wavelength light is transmitted through the transmissive member 110 Can vary. When the reflecting unit 200 is positioned outside the housing 100, the first wavelength light emitted by the light emitting unit 120 in a state where the reflecting unit 200 is positioned at the second position is reflected after being transmitted through the transmitting member 110. Reflected by the unit 200 and detected by the light detection unit 140. For this reason, D1 can be corrected in consideration of not only the variation of the light emitting unit 120 but also the variation of the transmissive member 110 by the above formula D1 / D0.

As described above, according to the present embodiment, the light emitted from the light emitting unit is reflected by the measurement target by the pair of one light emitting unit (light emitting unit 120) and one light receiving unit (light detecting unit 140). Both the first measurement for receiving the light and measuring the intensity of the light and the second measurement for measuring the intensity of the light received by the light emitted from the light emitting means without being reflected by the measuring object are performed. be able to.

In the case of this embodiment, the intensity of light of a predetermined wavelength emitted by the light emitting means can be measured every time, and the intensity of the reflected light can be corrected based on the measurement result. Can be measured with higher accuracy. As a result, the amount of detection target can be calculated with high accuracy. Further, since it is not necessary to separately provide light receiving means for performing each of the two measurement processes, the cost burden can be reduced and the number of members incorporated in the apparatus can be reduced, so that the apparatus can be downsized.

<Second Embodiment>
FIG. 5 is a schematic diagram showing a configuration of the measuring apparatus 10 according to the present embodiment. The measurement apparatus 10 according to the present embodiment includes a housing 100, a transmission member 110, a light emitting unit 120, a light detection unit 140, a reflection unit 200, a moving unit 201, a control unit 150, an analysis unit 160, a display unit 170, and an input. Part 180. The display unit 170 corresponds to the display 11 in FIG. 4, and the input unit 180 corresponds to the operation button 12 and the power button 14 in FIG. 4. Hereinafter, differences from the first embodiment will be described.

The light emitting unit 120 includes a light source 124 and a lens 122. The light source 124 has the light emitting element shown in the first embodiment. The lens 122 collects light from the light source 124. The condensing point of the light from the light source 124 by the lens 122 is located outside the transmission member 110 (a position where the distance from the outer surface of the transmission member 110 is about several mm, for example, 2 mm or less). This condensing point preferably overlaps with the optical axis of the light detection unit 140, in other words, overlaps with the intersection α of the two optical axes.

The input unit 180 receives a power ON / OFF input, a measurement start input, and the like from the user. At least a part of the content received by the input unit 180 (input for starting measurement) is input to the control unit 150.

The control unit 150 controls the light emitting unit 120, the moving unit 201, and the light detecting unit 140. The control unit 150 may further control the analysis unit 160.

When the control unit 150 receives the measurement start input, the control unit 150 executes the first measurement and the second measurement.

In the first measurement, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the first position (see FIG. 5). In this state, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength, and causes the light detection unit 140 to measure the intensity of the first wavelength light.

In such a first measurement, after the light having the first wavelength emitted from the light emitting unit 120 is transmitted through the transmission member 110, it is reflected by the measurement object in contact with the transmission member 110. Then, the reflected light passes through the transmission member 110 and reaches the housing 100 and is received by the light detection unit 140.

In the second measurement, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the second position (see FIG. 6). In this state, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength, and causes the light detection unit 140 to measure the intensity of the first wavelength light.

In such second measurement, the light of the first wavelength emitted from the light emitting unit 120 is reflected by the reflecting unit 200 without being reflected by the measurement target. Then, the reflected light is received by the light detection unit 140. In FIG. 6, the reflection unit 200 is located inside the housing 100, but can also be located outside the housing 100 as in the first embodiment.

When the control unit 150 receives the measurement start input, the control unit 150 causes each of the first measurement and the second measurement to be executed at least once. For example, the control unit 150 can execute the second measurement after performing the first measurement. In addition, the control unit 150 can also execute the first measurement after performing the second measurement. Alternatively, the control unit 150 may perform the first measurement after performing the second measurement, and then further execute the second measurement. Note that the time between the first measurement and the second measurement (eg, the time from the start of the first measurement to the start of the second measurement) is within 1 second, preferably within 100 milliseconds, more preferably Within 10 microseconds. As the time is reduced, the difference in measurement conditions between the first measurement and the second measurement (surrounding environment, progress of aging deterioration of the apparatus) can be reduced. Note that the control unit 150 may cause each of the first measurement and the second measurement to be executed twice or more.

Further, upon receiving the measurement start input, the control unit 150 can control the analysis unit 160 to execute a predetermined analysis.

The analysis unit 160 analyzes the amount of the detection target based on the data obtained by the first measurement and the data obtained by the second measurement.

For example, if the intensity of the first wavelength light obtained in the second measurement is D0 and the intensity of the first wavelength light obtained in the second measurement is D1, the analysis unit 160 uses the equation D1 / D0. After correcting D1, the amount of the detection target in the measurement target may be calculated by substituting the corrected value (D1 / D0) into a predetermined function.

In addition, when the second measurement is performed n times (n is an integer of 2 or more), the statistical values (average value, maximum value, minimum value, mode value, median value, etc.) of the D0 values for n times are obtained. It may be determined as a representative value. Then, D1 may be corrected by substituting the representative value into D0 in the expression D1 / D0.

Similarly, when the first measurement is performed m times (m is an integer of 2 or more), the statistical value of the value of D1 for m times (average value, maximum value, minimum value, mode value, median value, etc.) May be determined as a representative value. Then, the corrected value (D1 / D0) may be calculated by substituting the representative value into D1 of the expression D1 / D0.

The display unit 170 displays the analysis result of the analysis unit 160. For example, the detection target amount calculated by the analysis unit 160 is displayed.

Next, an example of the processing flow of the measurement method of the present embodiment will be described using the flowchart of FIG.

First, when the input unit 180 receives the measurement start input, the measurement start input is made to the control unit 150 (S10).

Then, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the second position (see FIG. 6). Then, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength in the state, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S11: second measurement).

Next, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the first position (see FIG. 5). Then, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength in the state, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S12: first measurement).

Thereafter, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the second position (see FIG. 6). Then, in this state, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S13: second measurement).

Thereafter, the control unit 150 controls the analysis unit 160 to calculate the amount of the detection target based on the data obtained in S11, S12, and S13 (S14).

For example, the analysis unit 160 determines the representative value D0 based on the intensities D01 and D02 of the first wavelength light obtained in S11 and S13, respectively. For example, the analysis unit 160 sets the average value of D01 and D02 as D0. Thereafter, the analysis unit 160 corrects the intensity D1 of the first wavelength light obtained in S12 based on, for example, the expression D1 / D0 using the representative value D0. Thereafter, the analysis unit 160 calculates the amount of the detection target by substituting the corrected value (D1 / D0) into a predetermined function. Thereafter, the display unit 170 displays the amount of the detection target calculated in S14 (S15).

Next, an example of the processing flow of the measurement method of the present embodiment will be described using the flowchart of FIG.

First, when the input unit 180 receives the measurement start input, the measurement start input is made to the control unit 150 (S20).

Then, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the first position (see FIG. 5). Then, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength in the state, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S21: first measurement).

Thereafter, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the second position (see FIG. 6). In this state, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S22: second measurement).

Thereafter, the control unit 150 controls the analysis unit 160 to calculate the amount of the detection target based on the data obtained in S21 and S22 (S23).

For example, the analysis unit 160 corrects the intensity D1 of the first wavelength light obtained in S21 using the intensity D0 of the first wavelength light obtained in S22, for example, based on the formula D1 / D0. . Thereafter, the analysis unit 160 calculates the amount of the detection target by substituting the corrected value (D1 / D0) into a predetermined function. Thereafter, the display unit 170 displays the detection target amount calculated in S23 (S24).

Next, an example of the processing flow of the measurement method of the present embodiment will be described using the flowchart of FIG.

First, when the input unit 180 receives a measurement start input, the measurement start input is made to the control unit 150 (S30).

Then, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the second position (see FIG. 6). Then, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength in the state, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S31: second measurement).

Then, the control unit 150 controls the moving unit 201 to position the reflecting unit 200 at the first position (see FIG. 5). In this state, the control unit 150 causes the light emitting unit 120 to emit light including the first wavelength, and causes the light detection unit 140 to measure the intensity of the first wavelength light (S32: first measurement).

Thereafter, the control unit 150 controls the analysis unit 160 to calculate the amount of the detection target based on the data obtained in S31 and S32 (S33).

For example, the analysis unit 160 corrects the intensity D1 of the first wavelength light obtained in S32 using the intensity D0 of the first wavelength light obtained in S31, for example, based on the expression D1 / D0. . Thereafter, the analysis unit 160 calculates the amount of the detection target by substituting the corrected value (D1 / D0) into a predetermined function. Thereafter, the display unit 170 displays the amount of the detection target calculated in S33 (S34).

According to this embodiment, the same effect as that of the first embodiment is realized. In addition, according to the present embodiment, when the measurement start input is received, the first measurement performed in a state where the reflection unit 200 is positioned at the first position (see FIG. 5) and the reflection unit 200 accordingly. The second measurement performed in a state (see FIG. 6) in which the is positioned at the second position is performed at least once, and the amount of the detection target can be calculated. According to the present embodiment as described above, it is possible to obtain an accurate calculation result without causing the user to perform many unnecessary operations.

Further, according to the present embodiment, the second measurement is performed before and after the first measurement, and based on the data obtained in the second measurement of the second time, the first measurement performed during the second measurement is performed. Data can be corrected. According to the present embodiment as described above, the second measurement is performed before and after the first measurement even if the surrounding environment, the light emitting unit 120, and the state of the transmissive member 110 may fluctuate in a short time. By doing so, it is possible to accurately estimate the state at the time of the first measurement. As a result, the accuracy of correcting the data of the first measurement can be increased, and the calculation accuracy of the detection target amount can be increased.

<Third Embodiment>
FIG. 10 is a diagram illustrating a configuration of the measurement apparatus 10 according to the third embodiment. The measuring apparatus 10 according to the present embodiment has the same configuration as the measuring apparatus 10 according to the first embodiment or the second embodiment except that the wavelength filter 190 is provided. FIG. 10 shows a case similar to that of the first embodiment.

The wavelength filter 190 is disposed in front of the light detection unit 140, transmits light of the first wavelength, and cuts light of other wavelengths. Thereby, light other than the first wavelength is cut from the light incident on the light detection unit 140.

As shown in FIG. 11, the wavelength filter 190 may be arranged in front of the light emitting unit 120 instead of in front of the light detecting unit 140. The wavelength filter 190 may be disposed in front of the light detection unit 140 and in front of the wavelength filter 190, respectively.

Also in this embodiment, the same effects as those in the first or second embodiment can be obtained. In addition, since light other than the first wavelength is cut from the light incident on the light detection unit 140, the measurement accuracy by the measurement apparatus 10 is further improved.

As described above, the embodiments of the present invention have been described with reference to the drawings. However, these are exemplifications of the present invention, and various configurations other than the above can be adopted.

Hereinafter, examples of the reference form will be added.
1. A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
Measuring device.
2. In the measuring apparatus according to 1,
And further comprising control means for controlling the light emitting means, the moving means, and the light detecting means,
When the control means receives an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
Measuring device that performs both of the above.
3. In the measuring apparatus according to 2,
When the control means receives an input of measurement start, the control means performs the second measurement, the first measurement, and the second measurement in this order.
4). In the measuring apparatus according to 2 or 3,
A measurement apparatus further comprising an analysis unit that analyzes the amount of the detection target based on the data obtained by the first measurement and the data obtained by the second measurement.
5. In the measuring apparatus according to any one of 2 to 4,
In the first measurement, after the light emitted by the light emitting means is transmitted through the transmissive member, it is reflected by the measurement object in contact with the transmissive member, and the reflected light is transmitted through the transmissive member. Received by the light detection means,
In the second measurement, the light emitted by the light emitting means is reflected by the reflecting means without being reflected by the measurement object, and the reflected light is received by the light detecting means.
6). In the measuring apparatus according to any one of 1 to 5,
The light detection means is a measuring device arranged in a direction to receive reflected light reflected by a measurement object in which light emitted from the light emitting means is in contact with the transmitting member.
7). In the measuring apparatus according to any one of 1 to 6,
The measuring device is configured to reflect the light irregularly.
8). A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus has the control of the light emitting means, the light detecting means, and the moving means, and accepts an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A measurement method that performs both.
8-2. In the measuring method according to 8,
When the computer receives a measurement start input, the computer executes the second measurement, the first measurement, and the second measurement in this order.
8-3. In the measuring method according to 8 or 8-2,
The measurement method, wherein the computer further executes an analysis step of analyzing the amount of the detection target based on the data obtained by the first measurement and the data obtained by the second measurement.
8-4. In the measurement method according to any one of 8 to 8-3,
In the first measurement, after the light emitted by the light emitting means is transmitted through the transmissive member, it is reflected by the measurement object in contact with the transmissive member, and the reflected light is transmitted through the transmissive member. Received by the light detection means,
In the second measurement, the light emitted by the light emitting means is reflected by the reflecting means without being reflected by the measurement object, and the reflected light is received by the light detecting means.
8-5. In the measurement method according to any one of 8 to 8-4,
The measurement method in which the light detection means is arranged in a direction to receive the reflected light reflected by the measurement object in contact with the transmission member by the light emitted from the light emitting means.
8-6. In the measurement method according to any one of 8 to 8-5,
The measuring method, wherein the reflecting means is configured to diffusely reflect the light.
9. A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus having the above control the light emitting means, the light detecting means, and the moving means, and accepting an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A program that executes both.
9-2. In the program described in 9,
A program for causing the computer to execute the second measurement, the first measurement, and the second measurement in this order when receiving an input of measurement start.
9-3. In the program described in 9 or 9-2,
A program that causes the computer to further function as an analysis unit that analyzes an amount of a detection target based on data obtained in the first measurement and data obtained in the second measurement.
9-4. In the program according to any one of 9 to 9-3,
In the first measurement, after the light emitted by the light emitting means is transmitted through the transmissive member, it is reflected by the measurement object in contact with the transmissive member, and the reflected light is transmitted through the transmissive member. Received by the light detection means,
In the second measurement, a program in which the light emitted from the light emitting means is reflected by the reflecting means without being reflected by the measurement object, and the reflected light is received by the light detecting means.
9-5. In the program according to any one of 9 to 9-4,
The light detection means is a program arranged in a direction to receive reflected light reflected by a measurement object in which light emitted by the light emitting means is in contact with the transmitting member.
9-6. In the program according to any one of 9 to 9-5,
The reflection means is a program configured to diffusely reflect the light.

This application claims priority based on Japanese Patent Application No. 2014-138028 filed on July 3, 2014, the entire disclosure of which is incorporated herein.

Claims (9)

A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
Measuring device. The measuring apparatus according to claim 1,
And further comprising control means for controlling the light emitting means, the moving means, and the light detecting means,
When the control means receives an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
Measuring device that performs both of the above. The measuring apparatus according to claim 2,
When the control means receives an input of measurement start, the control means performs the second measurement, the first measurement, and the second measurement in this order. The measuring device according to claim 2 or 3,
A measurement apparatus further comprising an analysis unit that analyzes the amount of the detection target based on the data obtained by the first measurement and the data obtained by the second measurement. In the measuring device according to any one of claims 2 to 4,
In the first measurement, after the light emitted by the light emitting means is transmitted through the transmissive member, it is reflected by the measurement object in contact with the transmissive member, and the reflected light is transmitted through the transmissive member. Received by the light detection means,
In the second measurement, the light emitted by the light emitting means is reflected by the reflecting means without being reflected by the measurement object, and the reflected light is received by the light detecting means. In the measuring device according to any one of claims 1 to 5,
The light detection means is a measuring device arranged in a direction to receive reflected light reflected by a measurement object in which light emitted from the light emitting means is in contact with the transmitting member. In the measuring device according to any one of claims 1 to 6,
The measuring device is configured to reflect the light irregularly. A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus has the control of the light emitting means, the light detecting means, and the moving means, and accepts an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A measurement method that performs both. A housing,
An opening provided in a part of the housing;
A transmissive member that is located within the opening and that forms part of the housing and transmits light of a first wavelength;
A light emitting means disposed inside the housing, radiating light including the first wavelength, and disposed such that an optical axis passes through the transmission member;
A light detection means for detecting light of the first wavelength, wherein the optical axis is disposed in the housing in a direction passing through the transmission member;
Reflecting means for reflecting the light of the first wavelength;
The reflection means is moved so that the first wavelength that does not overlap the optical axis of the light emitting means or the optical axis of the light emitting means and the light of the first wavelength emitted by the light emitting means is emitted from the light detecting means. Moving means located at a second position reflecting in the direction;
When the computer of the measuring apparatus having the above control the light emitting means, the light detecting means, and the moving means, and accepting an input of measurement start,
A first measurement in which the light emitting means is radiated in a state where the reflecting means is located at the first position, and the light detecting means is measured; and
A second measurement in which the light emitting means is radiated in a state where the reflecting means is positioned at the second position, and the light detecting means is measured;
A program that executes both.

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