Heat flux measurement device

Abstract

A heat flux measurement device (1A) is provided with: a first heat flux sensor (50A) having a pair of heat flux detection surfaces (50Aa, 50Ab) opposite to each other in the thickness direction; and at least a first heat flux control member (60A), among the first heat flux control member (60A) and a second heat flux control member (60B) that differ from the first heat flux sensor (50A) in heat capacity and that mutually differ in heat capacity. The first heat flux control member (60A) is provided only on one heat flux detection surface of the pair of heat flux detection surfaces (50Aa, 50Ab) of the first heat flux sensor (50A), or the first heat flux control member (60A) is provided on the one heat flux detection surface and the second heat flux control member (60B) is provided on the other heat flux detection surface.

Description

Technical Field

[0001] The present invention relates to a heat flux measurement device.

Background Art

[0002] Patent Document 1 discloses a heat flux sensor (10) having a plate-like insulating base material (100), a plurality of conductors (130, 140) made of metals having different thermoelectric powers and embedded in a plurality of via holes (101, 102) penetrating in the thickness direction of the insulating base material, a surface wiring pattern (111) connecting one ends of the plurality of conductors in the thickness direction of the insulating base material, a back surface wiring pattern (121) connecting the other ends of the plurality of conductors in the thickness direction of the insulating base material, a surface protection member (110) covering one surface (100a) of the insulating base material in the thickness direction and the surface wiring pattern, and a back surface protection member (120) covering the other surface (100b) of the insulating base material in the thickness direction and the back surface wiring pattern, for detecting a heat flux flowing between one surface and the other surface in the thickness direction; a thermocouple (20) having a joint portion where a first conductor (21) and a second conductor (22) made of metals having different thermoelectric powers are joined; a first insulating sheet (210) covering the thermocouple from one side in a direction intersecting with the direction in which the first conductor and the second conductor are arranged; and a second insulating sheet (220) covering the thermocouple from the side opposite to the first insulating sheet, and a thermocouple sheet (200) for detecting the temperature of the joint portion, wherein the thermocouple sheet is fixed at a position where the surface protection member and the back surface protection member extend in a plane direction from the insulating base material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the heat flow measurement device described in Patent Document 1 is placed inside a measurement object (e.g., soil, seawater, atmosphere, etc.) that generates or absorbs heat isotropically, there is a problem that the heat flux from the measurement object cannot be accurately measured because the heat flux from the measurement object flows into the heat flux sensor isotropically.

[0005] The present invention has been made to solve the above problems, and an object thereof is to provide a heat flux measurement device that can accurately measure the heat flux from a measurement object even when it is placed inside a measurement object that generates or absorbs heat isotropically.

Means for Solving the Problems

[0006] The heat flux measurement device of the present invention includes a first heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction, a first heat flux control member and a second heat flux control member that have different heat capacities from the first heat flux sensor and also have different heat capacities from each other, and at least the first heat flux control member of them, and the first heat flux control member is provided only on one of the pair of heat flux detection surfaces of the first heat flux sensor, or the first heat flux control member is provided on one of the heat flux detection surfaces, and the second heat flux control member is provided on the other heat flux detection surface.

Effects of the Invention

[0007] According to the present invention, it is possible to provide a heat flux measurement device that can accurately measure the heat flux from a measurement object even when it is placed inside a measurement object that generates or absorbs heat isotropically.

Brief Description of the Drawings

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DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, the heat flux measuring device of the present invention will be described. Note that the present invention is not limited to the following configuration and may be appropriately modified without departing from the gist of the present invention. Also, a combination of a plurality of the individual preferred configurations described below is also within the scope of the present invention.

[0010] Each of the following embodiments is illustrative, and it goes without saying that partial substitution or combination of the configurations shown in different embodiments is possible. In the embodiments after the second embodiment, descriptions of matters common to the first embodiment will be omitted, and different points will be mainly described. In particular, for the same operational effects due to the same configurations, they will not be sequentially mentioned for each embodiment.

[0011] In the following description, when not particularly distinguishing each embodiment, it is simply referred to as "the heat flux measuring device of the present invention".

[0012] The drawings shown below are schematic diagrams, and their dimensions, scales of aspect ratios, etc. may be different from those of actual products.

[0013] In this specification, unless otherwise specified, terms indicating the relationship between elements (e.g., "parallel", "perpendicular", etc.) and terms indicating the shape of elements do not only mean the exact strict aspect, but also mean a substantially equivalent range, for example, a range including a difference of about several percent.

[0014] The heat flux measuring device of the present invention includes a first heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction, and at least the first heat flux control member among a first heat flux control member and a second heat flux control member that have different heat capacities from the first heat flux sensor and also have different heat capacities from each other. The first heat flux control member is provided only on one of the pair of heat flux detection surfaces of the first heat flux sensor, or the first heat flux control member is provided on one of the heat flux detection surfaces, and the second heat flux control member is provided on the other heat flux detection surface.

[0015] [Embodiment 1] FIG. 1 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 1 of the present invention is arranged with respect to a measurement object.

[0016] When measuring the heat flux from the measurement object 100, the heat flux measurement device 1A shown in FIG. 1 is arranged inside the measurement object 100.

[0017] The measurement object 100 is assumed to be one that generates or absorbs heat isotropically, and examples thereof include soil, seawater (liquid), air (gas), and the like.

[0018] In this specification, for example, when the measurement object is soil or the like, "the heat flux measurement device is arranged inside the measurement object" can also be described as "the heat flux measurement device is buried in the measurement object".

[0019] The measurement object 100 may be placed in a container. In this case, the container may be, for example, a vacuum chamber.

[0020] The heat flux measurement device 1A includes a first heat flux sensor 50A and a first heat flux control member 60A.

[0021] The first heat flux sensor 50A has a pair of heat flux detection surfaces 50Aa and 50Ab that face each other in the thickness direction (the vertical direction in FIG. 1).

[0022] In the first heat flux sensor 50A, when the heat flux from the measurement object 100 passes through the heat flux detection surface 50Aa or the heat flux detection surface 50Ab, a thermoelectric voltage is generated. Here, if reference data showing the relationship between the thermoelectric voltage and the heat flux is prepared in advance for each type of the measurement object 100, by using this reference data, the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A can be obtained from the thermoelectric voltage generated in the first heat flux sensor 50A.

[0023] Heat flux is defined as the amount of heat per unit area and per unit time passing through a certain plane (in FIG. 1, the heat flux detection surface 50Aa or the heat flux detection surface 50Ab). Further, heat flux also has a directionality indicating the direction of heat transfer. That is, heat flux is represented by a vector including the magnitude and direction of heat.

[0024] Unlike temperature, heat flux is suitable for capturing minute heat changes in the object to be measured. For example, heat flux is measured for the purpose of evaluating the magnitude of heat such as reaction heat, frictional heat, and radiant heat in the object to be measured, as well as the direction of heat transfer.

[0025] When the object to be measured 100 is soil, it is preferable that the first heat flux sensor 50A is arranged such that the heat flux detection surface 50Aa or the heat flux detection surface 50Ab is parallel to the ground surface (the ground).

[0026] The first heat flux sensor 50A may have a thermoelectric conversion element. In this case, the thermoelectric conversion principle by the thermoelectric conversion element is not particularly limited.

[0027] The first heat flux sensor 50A may have a thermoelectric conversion element that utilizes the Seebeck effect as the thermoelectric conversion principle. That is, the first heat flux sensor 50A may contain a thermoelectric material having the Seebeck effect. In this case, the first heat flux sensor 50A can measure the thermoelectromotive voltage due to the Seebeck effect.

[0028] The thermoelectromotive voltage due to the Seebeck effect is represented by the following formula. V = S Z ·ΔT Here, V is the thermoelectromotive voltage, S Z is the Seebeck coefficient, and ΔT is the temperature difference inside the heat flux sensor.

[0029] Among the thermoelectric materials having the Seebeck effect, examples of thermoelectric materials capable of generating a significant thermoelectromotive voltage are, for p-type materials, Bi2Te3, F e Si2, Zn3Sb4, Ca3Co4O9, (Ti, Zr, Hf)Ni(Sn, Sb), CeFe 3.5 Co 0.5Sb 12 etc. are included, and if it is an n-type material, Bi2Te 2.96 Se 0.04 , PbTe, CoSb3, FeSi2(Co), Mg 3.2 Sb 1.5 Bi 0.49 Te 0.01 , CaMnO3, Fe2Val 0.5 Si 0.5 etc. are included.

[0030] The first heat flux sensor 50A may have a thermoelectric conversion element that utilizes the anomalous Nernst effect as the thermoelectric conversion principle. That is, the first heat flux sensor 50A may include a thermoelectric material having the anomalous Nernst effect. In this case, the first heat flux sensor 50A can measure the thermoelectromotive force due to the anomalous Nernst effect.

[0031] The thermoelectromotive force due to the anomalous Nernst effect is expressed by the following formula. V = S N ·L·ΔT / t Here, V is the thermoelectromotive force, S N is the anomalous Nernst coefficient, ΔT is the temperature difference inside the heat flux sensor, t is the thickness in the direction parallel to the heat flux direction generated by the temperature difference inside the heat flux sensor, and L is the length in the direction parallel to the current direction generated by the thermoelectromotive force of the heat flux sensor.

[0032] Among the thermoelectric materials having the anomalous Nernst effect, examples of the thermoelectric materials capable of generating a significant thermoelectromotive force include intermetallic compounds represented by chemical compositions such as Fe3Al, Fe3Ga, Mn3Sn, Mn3Ga, Co2MnGa, Co2MnAl, Co2MnIn, Mn3Ge, Fe2NiGa, CoTiSb, CoVSb, CoCrSb, CoMnSb, TiGa2Mn, etc.

[0033] Instead of the thermoelectric conversion element, the first heat flux sensor 50A may have a configuration in which a plurality of temperature sensor elements (for example, thermistors) whose electrical resistance changes with temperature change are combined.

[0034] The shape of the first heat flux sensor 50A is not particularly limited, and for example, it may be plate-shaped.

[0035] In this specification, the plate shape includes shapes such as a thin strip shape, a sheet shape, and a film shape.

[0036] In the heat flux measurement device 1A, the first heat flux control member 60A is provided only on one of the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A. In the example shown in FIG. 1, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0037] The first heat flux control member 60A has a different heat capacity from the first heat flux sensor 50A. The heat capacity of the first heat flux control member 60A may be larger than the heat capacity of the first heat flux sensor 50A, or may be smaller than the heat capacity of the first heat flux sensor 50A.

[0038] From the viewpoint of increasing the heat capacity of the first heat flux control member 60A, the larger the volume of the first heat flux control member 60A, the more preferable. In this case, the volume of the first heat flux control member 60A is preferably larger than the volume of the first heat flux sensor 50A, for example.

[0039] On the other hand, for example, when the measurement object 100 is soil or the like, if the volume of the first heat flux control member 60A is too large, it becomes difficult to embed the heat flux measurement device 1A in the measurement object 100. Therefore, from the viewpoint of facilitating the embedding of the heat flux measurement device 1A, the smaller the volume of the first heat flux control member 60A, the more preferable. In this case, the volume of the first heat flux control member 60A is preferably smaller than the volume of the first heat flux sensor 50A, for example.

[0040] When a conventional heat flux measurement device is disposed inside a measurement object that generates heat or absorbs heat isotropically, since the heat flux from the measurement object flows into the heat flux sensor isotropically, the heat flux from the measurement object cannot be accurately measured.

[0041] In contrast, in the heat flux measuring device 1A, as described above, the first heat flux sensor 50A and the first heat flux control member 60A having a different heat capacity are provided only on one of the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A. In the example shown in FIG. 1, they are provided only on the heat flux detection surface 50Aa. As a result, in the heat flux measuring device 1A, a temperature difference can be effectively generated between the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A. Therefore, even when the heat flux from the measurement object 100 can flow into the first heat flux sensor 50A isotropically, the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A can be controlled to the heat flux vector Q1 flowing in the direction from one of the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A to the other. In the example shown in FIG. 1, it is the direction from the heat flux detection surface 50Ab to the heat flux detection surface 50Aa. Therefore, the heat flux measuring device 1A can accurately measure the heat flux from the measurement object 100 by measuring the absolute value of the heat flux vector Q1 from the measurement object 100 flowing into the first heat flux sensor 50A.

[0042] From the above, according to the heat flux measuring device 1A, even when it is arranged inside the measurement object 100 that generates heat or absorbs heat isotropically, a heat flux measuring device capable of accurately measuring the heat flux from the measurement object 100 can be realized.

[0043] In the example shown in FIG. 1, regarding the direction of the heat flux flowing into the first heat flux sensor 50A, the direction from the heat flux detection surface 50Ab to the heat flux detection surface 50Aa of the first heat flux sensor 50A is defined as the positive direction, and the direction from the heat flux detection surface 50Aa to the heat flux detection surface 50Ab of the first heat flux sensor 50A is defined as the negative direction. The same applies to other figures.

[0044] In the example shown in FIG. 1, regarding the heat flux vector Q1 from the measurement object 100 flowing into the first heat flux sensor 50A, since the direction of the heat flux is the positive direction, it is denoted as “+Q1” for convenience. The same applies to other figures.

[0045] Examples of the constituent material of the first heat flux control member 60A include non-metallic materials such as ceramics and glass, and metallic materials such as aluminum and copper, etc.

[0046] When the first heat flux control member 60A is made of a non-metallic material, although it is difficult for the thermal conductivity of the first heat flux control member 60A to be high, among the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, for the heat flux detection surface where the first heat flux control member 60A is not provided, in the example shown in FIG. 1, by keeping the temperature of the heat flux detection surface 50Ab constant, the temperature difference between the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A can be increased. As a result, in the heat flux measurement device 1A, a large thermoelectromotive force can be generated in the first heat flux sensor 50A, so that the measurement of the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A becomes easy.

[0047] When the first heat flux control member 60A is made of a metallic material, since the thermal conductivity of the first heat flux control member 60A becomes high, the temperature difference between the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A can be made even larger by heat extraction. As a result, in the heat flux measurement device 1A, an even larger thermoelectromotive force can be generated in the first heat flux sensor 50A, so that the measurement of the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A becomes even easier.

[0048] The shape of the first heat flux control member 60A is not particularly limited, and for example, it may be plate-shaped.

[0049] When the heat flux measurement device 1A is arranged, for example, inside the measurement object 100 placed in a container, the first heat flux control member 60A may be at least a part of the container.

[0050] The first heat flux control member 60A may have at least one of a heating part that raises its own temperature and a cooling part that lowers its own temperature. In this case, since the temperature of the first heat flux control member 60A can be kept constant, the temperature difference between the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A can be kept constant. As a result, in the heat flux measuring device 1A, the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A can be measured with high accuracy.

[0051] The heat flux measuring device 1A may further have a first conducting wire 70A electrically led out from the first heat flux sensor 50A. In this case, by connecting the first conducting wire 70A to an external device, the signal of the thermoelectromotive voltage generated in the first heat flux sensor 50A can be transmitted to the external device.

[0052] When measuring the heat flux from the measurement object 100, the first conducting wire 70A may be arranged so as to protrude from the inside of the measurement object 100 toward the outside, or may be arranged so as not to protrude from the inside of the measurement object 100 toward the outside.

[0053] FIG. 2 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Modification 1 of Embodiment 1 of the present invention is arranged with respect to a measurement object.

[0054] In the heat flux measuring device 1B shown in FIG. 2, the first heat flux control member 60A is provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A. Thereby, in the heat flux measuring device 1B, the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A is controlled to a heat flux vector Q1 flowing in the direction from the heat flux detection surface 50Aa to the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0055] In the example shown in FIG. 2, regarding the heat flux vector Q1 from the measurement object 100 flowing into the first heat flux sensor 50A, since the direction of the heat flux is the negative direction, it is denoted as “-Q1” for convenience. The same applies to other figures.

[0056] FIG. 3 is a schematic diagram showing a state in which an example of a heat flux measurement device according to Modification 2 of Embodiment 1 of the present invention is arranged with respect to a measurement object.

[0057] In the heat flux measurement device 1C shown in FIG. 3, a first heat flux control member 60A is provided on one of the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and a second heat flux control member 60B is provided on the other heat flux detection surface. In the example shown in FIG. 3, the first heat flux control member 60A is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0058] The first heat flux control member 60A and the second heat flux control member 60B have different heat capacities from the first heat flux sensor 50A. The heat capacity of the second heat flux control member 60B may be larger than the heat capacity of the first heat flux sensor 50A, or may be smaller than the heat capacity of the first heat flux sensor 50A.

[0059] The first heat flux control member 60A and the second heat flux control member 60B have different heat capacities from each other. The heat capacity of the second heat flux control member 60B may be larger than the heat capacity of the first heat flux control member 60A, or may be smaller than the heat capacity of the first heat flux control member 60A.

[0060] Other features of the second heat flux control member 60B are the same as those of the first heat flux control member 60A, for example.

[0061] In the heat flux measurement device 1C, as described above, the first heat flux control member 60A and the second heat flux control member 60B are provided with respect to the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, so that the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A is controlled to a heat flux vector Q1 flowing in the direction from the heat flux detection surface 50Ab to the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0062] When measuring the heat flux from the object 100 to be measured, from the viewpoint of improving the measurement accuracy, the heat flux measuring device 1A (see FIG. 1) and the heat flux measuring device 1B (see FIG. 2) are more preferable than the heat flux measuring device 1C (see FIG. 3). That is, when measuring the heat flux from the object 100 to be measured, from the viewpoint of improving the measurement accuracy, the aspect in which the first heat flux control member 60A is provided only on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A is more preferable than the aspect in which the first heat flux control member 60A is provided on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the other surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A.

[0063] In FIGS. 1, 2, and 3, an aspect in which only one heat flux measuring device is arranged with respect to the object 100 to be measured is shown, but a plurality of heat flux measuring devices may be arranged with respect to the object 100 to be measured.

[0064] FIG. 4 is a schematic diagram showing an example of a state in which a plurality of the heat flux measuring devices shown in FIG. 1 are arranged with respect to the object to be measured.

[0065] In the example shown in FIG. 4, two heat flux measuring devices 1A (see FIG. 1) are arranged inside the object 100 to be measured.

[0066] In the example shown in FIG. 4, the two heat flux measuring devices 1A are arranged side by side in the thickness direction inside the object 100 to be measured.

[0067] Note that three or more heat flux measuring devices 1A may be arranged inside the object 100 to be measured.

[0068] FIG. 5 is a schematic diagram showing an example of a state in which a plurality of the heat flux measuring devices shown in FIG. 3 are arranged with respect to the object to be measured.

[0069] In the example shown in FIG. 5, two heat flux measuring devices 1C (see FIG. 3) are arranged inside the object 100 to be measured.

[0070] In the example shown in FIG. 5, two heat flux measuring devices 1C are arranged side by side in the thickness direction inside the object to be measured 100.

[0071] Note that three or more heat flux measuring devices 1C may be arranged inside the object to be measured 100.

[0072] As an example other than FIGS. 4 and 5, two heat flux measuring devices 1B (see FIG. 2) may be arranged inside the object to be measured 100. In this case, the two heat flux measuring devices 1B may be arranged side by side in the thickness direction inside the object to be measured 100. Note that three or more heat flux measuring devices 1B may be arranged inside the object to be measured 100.

[0073] [Embodiment 2] The heat flux measuring device according to Embodiment 2 of the present invention further includes a second heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction.

[0074] In the heat flux measuring device according to Embodiment 2 of the present invention, when measuring the heat flux from the object to be measured, the first heat flux sensor and the second heat flux sensor are arranged such that the angle formed by the heat flux detection surface of the first heat flux sensor with respect to the heat flux vector of the disturbance flowing into the first heat flux sensor from the outside of the object to be measured is equal to the angle formed by the heat flux detection surface of the second heat flux sensor with respect to the heat flux vector of the disturbance flowing into the second heat flux sensor from the outside of the object to be measured.

[0075] In the heat flux measuring device according to Embodiment 2 of the present invention, when measuring the heat flux from the object to be measured, the heat flux vector from the object to be measured flowing into the first heat flux sensor and the heat flux vector from the object to be measured flowing into the second heat flux sensor are not canceled out, and the heat flux vector of the disturbance flowing into the first heat flux sensor from the outside of the object to be measured and the heat flux vector of the disturbance flowing into the second heat flux sensor from the outside of the object to be measured are canceled out.

[0076] In the heat flux measuring device according to Embodiment 2 of the present invention, the first heat flux control member is provided only on one of the pair of heat flux detection surfaces of the first heat flux sensor.

[0077] In the heat flux measuring device according to Embodiment 2 of the present invention, on both surfaces of one heat flux detection surface and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor, no heat flux control member is provided.

[0078] The heat flux measuring device according to Embodiment 2 of the present invention is the same as the heat flux measuring device according to Embodiment 1 of the present invention except for the above points.

[0079] FIG. 6 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Embodiment 2 of the present invention is arranged with respect to a measurement object.

[0080] The heat flux measuring device 2A shown in FIG. 6 includes a first heat flux sensor 50A, a second heat flux sensor 50B, and a first heat flux control member 60A.

[0081] In the heat flux measuring device 2A, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A. Thereby, in the heat flux measuring device 2A, the heat flux from the measurement object 100 flowing into the first heat flux sensor 50A is controlled to the heat flux vector Q1 flowing in the direction from the heat flux detection surface 50Ab to the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0082] The second heat flux sensor 50B has a pair of heat flux detection surfaces 50Ba and 50Bb facing each other in the thickness direction.

[0083] In the heat flux measurement device 2A, no heat flux control member is provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. As a result, in the heat flux measurement device 2A, the heat flux from the measurement object 100 flowing into the second heat flux sensor 50B becomes a heat flux vector that flows in isotropically (in FIG. 6, it is illustrated by representing heat flux vectors Q2 in opposite directions to each other), and is not controlled to a heat flux vector in one direction. Therefore, in the heat flux measurement device 2A, in the second heat flux sensor 50B, when viewed as a whole, there will be no heat flux vector from the measurement object 100.

[0084] In the example shown in FIG. 6, regarding the direction of the heat flux flowing into the second heat flux sensor 50B, the direction from the heat flux detection surface 50Bb to the heat flux detection surface 50Ba of the second heat flux sensor 50B is defined as the positive direction, and the direction from the heat flux detection surface 50Ba to the heat flux detection surface 50Bb of the second heat flux sensor 50B is defined as the negative direction. The same applies to other figures.

[0085] In the example shown in FIG. 6, regarding the heat flux vector Q2 from the measurement object 100 flowing into the second heat flux sensor 50B, those with the heat flux direction being the positive direction are denoted as “+Q2” for convenience, and those with the heat flux direction being the negative direction are denoted as “−Q2”. The same applies to other figures.

[0086] The second heat flux sensor 50B preferably has the same heat capacity as the first heat flux sensor 50A.

[0087] The second heat flux sensor 50B may have a different heat capacity from the first heat flux sensor 50A. In this case, the heat capacity of the second heat flux sensor 50B may be larger than the heat capacity of the first heat flux sensor 50A, or may be smaller than the heat capacity of the first heat flux sensor 50A.

[0088] When the measurement object 100 is soil, the second heat flux sensor 50B is preferably arranged such that the heat flux detection surface 50Ba or the heat flux detection surface 50Bb is parallel to the ground surface (the ground).

[0089] Another feature of the second heat flux sensor 50B is the same as that of the first heat flux sensor 50A, for example.

[0090] When measuring the heat flux with a heat flux measuring device, in addition to the heat flux from the object to be measured, a heat flux resulting from disturbances from outside the object to be measured (for example, sunlight, heat of vaporization of moisture from the soil, etc.) may flow into the heat flux measuring device, specifically, the heat flux sensor. In this case, in order to accurately measure the heat flux from the object to be measured by the heat flux measuring device, it is desirable to remove the influence of the disturbance heat flux as much as possible.

[0091] On the other hand, in the heat flux measuring device 2A, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that the angle formed by the heat flux detection surface of the first heat flux sensor 50A with respect to the heat flux vector of the disturbance EX flowing into the first heat flux sensor 50A from outside the object to be measured 100 is equal to the angle formed by the heat flux detection surface of the second heat flux sensor 50B with respect to the heat flux vector of the disturbance EX flowing into the second heat flux sensor 50B from outside the object to be measured 100. Specifically, it is as follows.

[0092] In the heat flux measuring device 2A, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that both the angle formed by the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A with respect to the heat flux vector of the disturbance EX and the angle formed by the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B with respect to the heat flux vector of the disturbance EX are 90°. That is, in the heat flux measuring device 2A, the direction perpendicular to the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A and the direction perpendicular to the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B are parallel to each other and also parallel to the direction of the heat flux vector of the disturbance EX, and the first heat flux sensor 50A and the second heat flux sensor 50B are arranged accordingly.

[0093] In the heat flux measurement device 2A, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged as described above with respect to the heat flux vector of the disturbance EX. As a result, the heat flux of the disturbance EX flowing into the first heat flux sensor 50A is controlled to the heat flux vector Qex1 flowing in the direction from the heat flux detection surface 50Ab of the first heat flux sensor 50A toward the heat flux detection surface 50Aa. Further, in the heat flux measurement device 2A, the heat flux of the disturbance EX flowing into the second heat flux sensor 50B is controlled to the heat flux vector Qex1 flowing in the direction from the heat flux detection surface 50Bb of the second heat flux sensor 50B toward the heat flux detection surface 50Ba.

[0094] In the example shown in FIG. 6, for the heat flux vector Qex1 of the disturbance EX flowing into the first heat flux sensor 50A and the second heat flux sensor 50B, since the direction of the heat flux is the positive direction, it is denoted as "+Qex1" for convenience. The same applies to other figures.

[0095] Further, in the heat flux measurement device 2A, when measuring the heat flux from the object to be measured 100, the heat flux vector from the object to be measured 100 flowing into the first heat flux sensor 50A and the heat flux vector from the object to be measured 100 flowing into the second heat flux sensor 50B are not canceled out, and the heat flux vector of the disturbance EX flowing into the first heat flux sensor 50A from outside the object to be measured 100 and the heat flux vector of the disturbance EX flowing into the second heat flux sensor 50B from outside the object to be measured 100 are canceled out. Specifically, it is as follows.

[0096] In this specification, "the heat flux vectors are canceled out" means that in both heat flux vectors, the magnitude (absolute value) and the direction are both equal, so that they cancel each other out when the difference between the two heat flux vectors is taken. When the heat flux vector of the disturbance is the target, "the magnitude (absolute value) of the heat flux vector is equal" means that the magnitude (absolute value) of one heat flux vector is within the range of ±20% with respect to the magnitude (absolute value) of the other heat flux vector.

[0097] In this specification, "the heat flux vectors are not canceled out" means that in both heat flux vectors, at least one of the magnitude (absolute value) and direction is different, so that when the difference between the two heat flux vectors is taken, they do not cancel each other out.

[0098] In the heat flux measuring device 2A, although the heat flux vector Q1 from the measurement object 100 exists in the positive direction in the first heat flux sensor 50A, the heat flux vector from the measurement object 100 does not exist in the second heat flux sensor 50B. Therefore, in the heat flux measuring device 2A, the heat flux vector Q1 from the measurement object 100 flowing into the first heat flux sensor 50A and the heat flux vector (which does not exist) from the measurement object 100 flowing into the second heat flux sensor 50B are not canceled out.

[0099] Furthermore, in the heat flux measuring device 2A, the heat flux vector Qex1 of the disturbance EX exists in the positive direction in each of the first heat flux sensor 50A and the second heat flux sensor 50B. Therefore, in the heat flux measuring device 2A, the heat flux vector Qex1 of the disturbance EX flowing into the first heat flux sensor 50A and the heat flux vector Qex1 of the disturbance EX flowing into the second heat flux sensor 50B are canceled out.

[0100] Therefore, in the heat flux measuring device 2A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 - Q2 + Qex1) = Q1 can be obtained. In this way, in the heat flux measuring device 2A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0101] Regarding the first heat flux sensor 50A and the second heat flux sensor 50B, when measuring the heat flux from the object to be measured 100, from the viewpoint of equalizing the heat flux vectors of the disturbance EX flowing into each of them, it is preferable that the first heat flux sensor 50A and the second heat flux sensor 50B are arranged as close to each other as possible. For example, the shortest distance between the first heat flux sensor 50A and the second heat flux sensor 50B is preferably 1 m or less. In this case, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, the influence of the heat flux vector of the disturbance EX can be sufficiently removed.

[0102] On the other hand, if the first heat flux sensor 50A and the second heat flux sensor 50B are too close to each other, the mutual heat capacities may affect each other, and there is a possibility that the measurement accuracy of the heat flux from the object to be measured 100 may decrease. From this viewpoint, the shortest distance between the first heat flux sensor 50A and the second heat flux sensor 50B is preferably 1 mm or more.

[0103] The heat flux measurement device 2A may further include a first conducting wire 70A electrically led out from the first heat flux sensor 50A. In this case, by connecting the first conducting wire 70A to an external device, the signal of the thermoelectric voltage generated in the first heat flux sensor 50A can be transmitted to the external device.

[0104] When measuring the heat flux from the object to be measured 100, the first conducting wire 70A may be arranged to protrude from the inside to the outside of the object to be measured 100, or may be arranged not to protrude from the inside to the outside of the object to be measured 100.

[0105] The heat flux measurement device 2A may further include a second conducting wire 70B electrically led out from the second heat flux sensor 50B. In this case, by connecting the second conducting wire 70B to an external device, the signal of the thermoelectric voltage generated in the second heat flux sensor 50B can be transmitted to the external device.

[0106] When measuring the heat flux from the object 100 to be measured, the second conductor 70B may be arranged so as to protrude from the inside to the outside of the object 100 to be measured, or may be arranged so as not to protrude from the inside to the outside of the object 100 to be measured.

[0107] In FIG. 6, the mode in which the disturbance EX flows into the object 100 to be measured from the upper side to the lower side is shown, but the inflow direction of the disturbance EX may be a direction different from that in FIG. 6.

[0108] FIG. 7 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Modification 1 of Embodiment 2 of the present invention is arranged with respect to the object to be measured.

[0109] The disturbance EX shown in FIG. 7 flows into the object 100 to be measured at an angle (oblique direction) different from that in FIG. 6.

[0110] On the other hand, in the heat flux measuring device 2B shown in FIG. 7, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged at an angle (oblique direction) different from that in FIG. 6 so that the angle formed by the heat flux detection surface of the first heat flux sensor 50A with respect to the heat flux vector of the disturbance EX is equal to the angle formed by the heat flux detection surface of the second heat flux sensor 50B with respect to the heat flux vector of the disturbance EX.

[0111] In FIGS. 6 and 7, the mode in which the disturbance EX flows into the object 100 to be measured in one direction is shown, but the inflow direction of the disturbance EX may be a plurality of directions.

[0112] FIG. 8 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Modification 2 of Embodiment 2 of the present invention is arranged with respect to the object to be measured.

[0113] The disturbance EX shown in FIG. 8 flows radially into the object 100 to be measured in a plurality of directions (two directions are shown as representatives in FIG. 8). In this case, the heat flux vectors of the disturbance EX may not be parallel depending on the position inside the object 100 to be measured.

[0114] On the other hand, in the heat flux measuring device 2C shown in FIG. 8, the angle formed by the heat flux detection surface of the first heat flux sensor 50A with respect to the heat flux vector of the disturbance EX flowing in one direction (the disturbance EX on the left side in FIG. 8) and the angle formed by the heat flux detection surface of the second heat flux sensor 50B with respect to the heat flux vector of the disturbance EX flowing in another direction (the disturbance EX on the right side in FIG. 8) are made equal, and the first heat flux sensor 50A and the second heat flux sensor 50B are arranged.

[0115] In the heat flux measuring device 2C, the first heat flux sensor 50A and the second heat flux sensor 50B are preferably arranged at angles at which the thermoelectric voltages are maximized at their respective positions with respect to the measurement object 100.

[0116] Alternatively, in the heat flux measuring device 2C, the first heat flux sensor 50A and the second heat flux sensor 50B are preferably arranged at their respective positions such that the heat flux detection surfaces are perpendicular to the direction of the heat flux vector of the disturbance EX. The direction of the heat flux vector of the disturbance EX is defined, for example, as the direction perpendicular to the heat flux detection surface of the heat flux sensor arranged at the angle at which the thermoelectric voltage is maximized when measuring the heat flux while changing the angle with at least one heat flux sensor outside the measurement object 100.

[0117] In the heat flux measuring device 2A (see FIG. 6), the heat flux measuring device 2B (see FIG. 7), and the heat flux measuring device 2C (see FIG. 8), when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that their respective pairs of heat flux detection surfaces are present inside the measurement object 100.

[0118] On the other hand, in a heat flux measuring device such as the heat flux measuring device 2A, the heat flux measuring device 2B, and the heat flux measuring device 2C, the first heat flux control member 60A is provided only on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the heat flux control member is not provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. When measuring the heat flux from the measurement object 100, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the measurement object 100, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the measurement object 100.

[0119] FIG. 9 is a schematic diagram showing a state in which an example of a heat flux measuring device according to Modification 3 of Embodiment 2 of the present invention is arranged with respect to a measurement object.

[0120] In the heat flux measuring device 2D shown in FIG. 9, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A is arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the measurement object 100, and the second heat flux sensor 50B is arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the measurement object 100.

[0121] In this specification, "the pair of heat flux detection surfaces of the heat flux sensor are inside the measurement object" includes not only the aspect where the heat flux sensor can be said to be inside the measurement object and both of the pair of heat flux detection surfaces of the heat flux sensor are at positions separated from the measurement object, that is, the aspect of not being exposed to the outside from the surface of the measurement object, but also the aspect where at least one of the pair of heat flux detection surfaces of the heat flux sensor is in contact with the surface of the measurement object, that is, the aspect of being exposed to the outside from the surface of the measurement object.

[0122] In this specification, for "the pair of heat flux detection surfaces of the heat flux sensor does not exist inside the object to be measured", in the aspect where it can be said that the heat flux sensor exists outside the object to be measured, it includes not only the aspect where both of the pair of heat flux detection surfaces of the heat flux sensor exist at positions separated from the object to be measured, but also the aspect where one of the pair of heat flux detection surfaces of the heat flux sensor is in contact with the surface of the object to be measured.

[0123] In the heat flux measurement device 2D, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0124] In the heat flux measurement device 2D, since the second heat flux sensor 50B is arranged outside the object to be measured 100, in the second heat flux sensor 50B, the heat flux vector from the object to be measured 100 does not exist, and the heat flux vector Qex2 of the disturbance EX exists in the positive direction.

[0125] Therefore, in the heat flux measurement device 2D, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - Qex2 = Q1 + Qex1 - Qex2 can be obtained. Here, since Qex1 - Qex2 is often substantially close to zero, in the heat flux measurement device 2D, when measuring the heat flux from the object to be measured 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX and the heat flux vector Qex2 of the disturbance EX) can be removed.

[0126] When measuring the heat flux from the object 100 to be measured, from the viewpoint of improving the measurement accuracy, the heat flux measuring devices 2A (see FIG. 6), 2B (see FIG. 7), and 2C (see FIG. 8) are more preferable than the heat flux measuring device 2D (see FIG. 9). That is, when measuring the heat flux from the object 100 to be measured, from the viewpoint of improving the measurement accuracy, the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B are arranged so as to be present inside the object 100 to be measured. This mode is more preferable than the mode in which the pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A are arranged so as to be present inside the object 100 to be measured, and the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B are arranged so as not to be present inside the object 100 to be measured.

[0127] [Embodiment 3] The heat flux measuring device according to Embodiment 3 of the present invention further includes a third heat flux control member having a heat capacity equivalent to that of the first heat flux control member and different from that of the second heat flux sensor.

[0128] In the heat flux measuring device according to Embodiment 3 of the present invention, the third heat flux control member is provided only on one of the pair of heat flux detection surfaces of the second heat flux sensor.

[0129] Except for the above points, the heat flux measuring device according to Embodiment 3 of the present invention is the same as the heat flux measuring device according to Embodiment 2 of the present invention.

[0130] FIG. 10 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Embodiment 3 of the present invention is arranged with respect to an object to be measured.

[0131] The heat flux measuring device 3A shown in FIG. 10 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, and a third heat flux control member 60C.

[0132] In the heat flux measurement device 3A, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0133] In the heat flux measurement device 3A, the third heat flux control member 60C is provided only on one of the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. In the example shown in FIG. 10, the third heat flux control member 60C is provided only on the heat flux detection surface 50Bb of the second heat flux sensor 50B. Thereby, in the heat flux measurement device 3A, the heat flux from the measurement object 100 flowing into the second heat flux sensor 50B is controlled to the heat flux vector Q2 flowing in the direction from the heat flux detection surface 50Ba to the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0134] The third heat flux control member 60C has a different heat capacity from the second heat flux sensor 50B. The heat capacity of the third heat flux control member 60C may be larger than the heat capacity of the second heat flux sensor 50B, or may be smaller than the heat capacity of the second heat flux sensor 50B.

[0135] The third heat flux control member 60C preferably has a different heat capacity from the first heat flux sensor 50A. In this case, the heat capacity of the third heat flux control member 60C may be larger than the heat capacity of the first heat flux sensor 50A, or may be smaller than the heat capacity of the first heat flux sensor 50A.

[0136] The third heat flux control member 60C has the same heat capacity as the first heat flux control member 60A.

[0137] Since the third heat flux control member 60C has the same heat capacity as the first heat flux control member 60A, it has a different heat capacity from the second heat flux control member 60B. The heat capacity of the third heat flux control member 60C may be larger than the heat capacity of the second heat flux control member 60B, or may be smaller than the heat capacity of the second heat flux control member 60B.

[0138] Other features of the third heat flux control member 60C are the same as those of the first heat flux control member 60A, for example.

[0139] In the heat flux measurement device 3A, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0140] In the heat flux measurement device 3A, in the second heat flux sensor 50B, the heat flux vector Q2 from the object to be measured 100 exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0141] Therefore, in the heat flux measurement device 3A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (-Q2 + Qex1) = Q1 + Q2 can be obtained. Thus, in the heat flux measurement device 3A, when measuring the heat flux from the object to be measured 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0142] FIG. 11 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Modification 1 of Embodiment 3 of the present invention is arranged with respect to the object to be measured.

[0143] In the heat flux measurement device 3B shown in FIG. 11, the first heat flux control member 60A is provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0144] In the heat flux measurement device 3B, the third heat flux control member 60C is provided only on the heat flux detection surface 50Ba of the second heat flux sensor 50B.

[0145] In the heat flux measurement device 3B, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0146] In the heat flux measurement device 3B, in the second heat flux sensor 50B, the heat flux vector Q2 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0147] Therefore, in the heat flux measurement device 3B, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (-Q1 + Qex1) - (Q2 + Qex1) = -Q1 - Q2 can be obtained. Thus, in the heat flux measurement device 3B, when measuring the heat flux from the object to be measured 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0148] FIG. 12 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Modification 2 of Embodiment 3 of the present invention is arranged with respect to the object to be measured.

[0149] In the heat flux measurement device 3C shown in FIG. 12, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged side by side in a direction perpendicular to the thickness direction (in FIG. 12, the left - right direction).

[0150] In the heat flux measurement device 3C, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0151] In the heat flux measurement device 3C, the third heat flux control member 60C is provided only on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0152] In the heat flux measurement device 3C, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0153] In the heat flux measurement device 3C, in the second heat flux sensor 50B, the heat flux vector Q2 from the object to be measured 100 exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0154] Therefore, in the heat flux measuring device 3C, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (-Q2 + Qex1) = Q1 + Q2 can be obtained. In this way, in the heat flux measuring device 3C, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0155] In the heat flux measuring device 3A (see FIG. 10), the heat flux measuring device 3B (see FIG. 11), and the heat flux measuring device 3C (see FIG. 12), when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the measurement object 100. In this case, in the heat flux measuring device 3A, the heat flux measuring device 3B, and the heat flux measuring device 3C, the first heat flux control member 60A is provided on the heat flux detection surface where the heat flux of the disturbance EX from the outside of the measurement object 100 flows into the first heat flux sensor 50A, or the third heat flux control member 60C is preferably provided on the heat flux detection surface where the heat flux of the disturbance EX from the outside of the measurement object 100 flows into the second heat flux sensor 50B.

[0156] Regarding the heat flux measuring device 3A, in the example shown in FIG. 10, when measuring the heat flux from the measurement object 100, the third heat flux control member 60C is provided on the heat flux detection surface 50Bb where the heat flux of the disturbance EX from the outside of the measurement object 100 flows into the second heat flux sensor 50B.

[0157] Regarding the heat flux measuring device 3B, in the example shown in FIG. 11, when measuring the heat flux from the measurement object 100, the first heat flux control member 60A is provided on the heat flux detection surface 50Ab where the heat flux of the disturbance EX from the outside of the measurement object 100 flows into the first heat flux sensor 50A.

[0158] Regarding the heat flux measurement device 3C, in the example shown in FIG. 12, when measuring the heat flux from the object to be measured 100, a third heat flux control member 60C is provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B, through which the heat flux of the disturbance EX from the outside of the object to be measured 100 flows in.

[0159] On the other hand, in a heat flux measurement device such as the heat flux measurement device 3A, the heat flux measurement device 3B, and the heat flux measurement device 3C, the first heat flux control member 60A is provided only on one surface of the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the third heat flux control member 60C is provided only on one surface of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb of the second heat flux sensor 50B. When measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object to be measured 100, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object to be measured 100.

[0160] FIG. 13 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Modification 3 of Embodiment 3 of the present invention is arranged with respect to the object to be measured.

[0161] In the heat flux measurement device 3D shown in FIG. 13, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A is arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object to be measured 100, and the second heat flux sensor 50B is arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object to be measured 100.

[0162] In the heat flux measurement device 3D, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0163] In the 3D heat flux measurement device, since the second heat flux sensor 50B is arranged outside the object 100 to be measured, in the second heat flux sensor 50B, there is no heat flux vector from the object 100 to be measured, and the heat flux vector Qex2 of the disturbance EX exists in the positive direction.

[0164] Therefore, in the 3D heat flux measurement device, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - Qex2 = Q1 + Qex1 - Qex2 can be obtained. Here, since Qex1 - Qex2 is often substantially close to zero, in the 3D heat flux measurement device, when measuring the heat flux from the object 100 to be measured, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX and the heat flux vector Qex2 of the disturbance EX) can be removed.

[0165] In the 3D heat flux measurement device, as a modification, the first heat flux control member 60A may be provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0166] In the 3D heat flux measurement device, as a modification, the third heat flux control member 60C may be provided only on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0167] [Embodiment 4] The heat flux measurement device according to Embodiment 4 of the present invention further includes a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member.

[0168] In the heat flux measurement device according to Embodiment 4 of the present invention, for a pair of heat flux detection surfaces of the second heat flux sensor, the fourth heat flux control member is provided only on one of the heat flux detection surfaces.

[0169] The heat flux measurement device according to Embodiment 4 of the present invention is the same as the heat flux measurement device according to Embodiment 2 of the present invention except for the above points.

[0170] FIG. 14 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 4 of the present invention is arranged with respect to a measurement object.

[0171] The heat flux measurement device 4A shown in FIG. 14 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, and a fourth heat flux control member 60D.

[0172] In the heat flux measurement device 4A, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0173] In the heat flux measurement device 4A, the fourth heat flux control member 60D is provided only on one of the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. In the example shown in FIG. 14, the fourth heat flux control member 60D is provided only on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0174] The fourth heat flux control member 60D has a different heat capacity from the second heat flux sensor 50B. The heat capacity of the fourth heat flux control member 60D may be larger than the heat capacity of the second heat flux sensor 50B, or may be smaller than the heat capacity of the second heat flux sensor 50B.

[0175] It is preferable that the fourth heat flux control member 60D has a different heat capacity from the first heat flux sensor 50A. In this case, the heat capacity of the fourth heat flux control member 60D may be larger than the heat capacity of the first heat flux sensor 50A, or may be smaller than the heat capacity of the first heat flux sensor 50A.

[0176] The fourth heat flux control member 60D has a different heat capacity from the first heat flux control member 60A. The heat capacity of the fourth heat flux control member 60D may be larger than the heat capacity of the first heat flux control member 60A, or may be smaller than the heat capacity of the first heat flux control member 60A.

[0177] Since the fourth heat flux control member 60D has a different heat capacity from the first heat flux control member 60A, it also has a different heat capacity from the third heat flux control member 60C. The heat capacity of the fourth heat flux control member 60D may be greater than or less than the heat capacity of the third heat flux control member 60C.

[0178] The fourth heat flux control member 60D preferably has the same heat capacity as the second heat flux control member 60B.

[0179] Other features of the fourth heat flux control member 60D are, for example, the same as those of the first heat flux control member 60A.

[0180] In the heat flux measurement device 4A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0181] In the heat flux measurement device 4A, in the second heat flux sensor 50B, the heat flux vector Q2 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0182] Therefore, in the heat flux measurement device 4A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 + Qex1) = Q1 - Q2 can be obtained. Thus, in the heat flux measurement device 4A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0183] In the heat flux measurement device 4A, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces are inside the object to be measured 100. In this case, in the heat flux measurement device 4A, for the first heat flux sensor 50A, the first heat flux control member 60A is provided on the heat flux detection surface where the heat flux of the disturbance EX from outside the object to be measured 100 flows in, or for the second heat flux sensor 50B, it is preferable that the fourth heat flux control member 60D is provided on the heat flux detection surface where the heat flux of the disturbance EX from outside the object to be measured 100 flows in. In the example shown in FIG. 14, for the second heat flux sensor 50B, the fourth heat flux control member 60D is provided on the heat flux detection surface 50Bb where the heat flux of the disturbance EX from outside the object to be measured 100 flows in.

[0184] On the other hand, in a heat flux measurement device such as the heat flux measurement device 4A, where the first heat flux control member 60A is provided only on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the fourth heat flux control member 60D is provided only on one surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A is arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object to be measured 100, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object to be measured 100.

[0185] FIG. 15 is a schematic diagram showing a state in which an example of a heat flux measurement device according to Modification 1 of Embodiment 4 of the present invention is arranged with respect to an object to be measured.

[0186] In the heat flux measuring device 4B shown in FIG. 15, when measuring the heat flux from the object to be measured 100, the first heat flux sensor 50A is arranged such that a pair of heat flux detection surfaces 50Aa and 50Ab are present inside the object to be measured 100, and the second heat flux sensor 50B is arranged such that a pair of heat flux detection surfaces 50Ba and 50Bb are not present inside the object to be measured 100.

[0187] In the heat flux measuring device 4B, in the first heat flux sensor 50A, the heat flux vector Q1 from the object to be measured 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0188] In the heat flux measuring device 4B, since the second heat flux sensor 50B is arranged outside the object to be measured 100, in the second heat flux sensor 50B, the heat flux vector from the object to be measured 100 does not exist, and the heat flux vector Qex2 of the disturbance EX exists in the positive direction.

[0189] Therefore, in the heat flux measuring device 4B, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - Qex2 = Q1 + Qex1 - Qex2 can be obtained. Here, since Qex1 - Qex2 is often substantially close to zero, in the heat flux measuring device 4B, when measuring the heat flux from the object to be measured 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX and the heat flux vector Qex2 of the disturbance EX) can be removed.

[0190] In the heat flux measuring device 4B, as a modification, the first heat flux control member 60A may be provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0191] In the heat flux measuring device 4B, as a modification, the fourth heat flux control member 60D may be provided only on the heat flux detection surface 50Ba of the second heat flux sensor 50B.

[0192] [Embodiment 5] The heat flux measurement device according to Embodiment 5 of the present invention further includes a third heat flux control member having a different heat capacity from the second heat flux sensor and an equal heat capacity to the first heat flux control member.

[0193] In the heat flux measurement device according to Embodiment 5 of the present invention, the third heat flux control member is provided on both surfaces of one heat flux detection surface and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0194] The heat flux measurement device according to Embodiment 5 of the present invention is the same as the heat flux measurement device according to Embodiment 2 of the present invention except for the above points.

[0195] FIG. 16 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 5 of the present invention is arranged with respect to a measurement object.

[0196] The heat flux measurement device 5A shown in FIG. 16 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, and a third heat flux control member 60C.

[0197] In the heat flux measurement device 5A, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0198] In the heat flux measurement device 5A, the third heat flux control member 60C is provided on both surfaces of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb with respect to the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B.

[0199] In the heat flux measurement device 5A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0200] In the heat flux measurement device 5A, since the third heat flux control member 60C is provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, the heat flux from the measurement object 100 flowing into the second heat flux sensor 50B is not controlled to a one-directional heat flux vector, but includes heat flux vectors Q2 in opposite directions to each other. Therefore, in the heat flux measurement device 5A, in the second heat flux sensor 50B, there is no heat flux vector from the measurement object 100, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0201] Therefore, in the heat flux measurement device 5A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 - Q2 + Qex1) = Q1 can be obtained. Thus, in the heat flux measurement device 5A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0202] FIG. 17 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Modification 1 of Embodiment 5 of the present invention is arranged with respect to a measurement object.

[0203] In the heat flux measurement device 5B shown in FIG. 17, the first heat flux control member 60A is provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0204] In the heat flux measurement device 5B, the third heat flux control member 60C is provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B.

[0205] In the heat flux measurement device 5B, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0206] In the heat flux measurement device 5B, in the second heat flux sensor 50B, there is no heat flux vector from the object 100 to be measured, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0207] Therefore, in the heat flux measurement device 5B, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (-Q1 + Qex1) - (Q2 - Q2 + Qex1) = -Q1 can be obtained. Thus, in the heat flux measurement device 5B, when measuring the heat flux from the object 100 to be measured, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0208] FIG. 18 is a schematic diagram showing a state in which an example of a heat flux measurement device according to a modification 2 of Embodiment 5 of the present invention is arranged with respect to an object to be measured.

[0209] In the heat flux measurement device 5C shown in FIG. 18, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged side by side in a direction perpendicular to the thickness direction (in FIG. 18, the left - right direction).

[0210] In the heat flux measurement device 5C, the first heat flux control member 60A is provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0211] In the heat flux measurement device 5C, the third heat flux control member 60C is provided on both surfaces of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0212] In the heat flux measurement device 5C, in the first heat flux sensor 50A, the heat flux vector Q1 from the object 100 to be measured exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0213] In the heat flux measurement device 5C, in the second heat flux sensor 50B, there is no heat flux vector from the object 100 to be measured, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0214] Therefore, in the heat flux measurement device 5C, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (-Q1 + Qex1)-(Q2 - Q2 + Qex1)= -Q1 can be obtained. In this way, in the heat flux measurement device 5C, when measuring the heat flux from the object 100 to be measured, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0215] In the heat flux measurement device 5A (see FIG. 16), the heat flux measurement device 5B (see FIG. 17), and the heat flux measurement device 5C (see FIG. 18), when measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces are inside the object 100 to be measured.

[0216] On the other hand, in a heat flux measurement device such as the heat flux measurement device 5A, the heat flux measurement device 5B, and the heat flux measurement device 5C, in which the first heat flux control member 60A is provided only on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the third heat flux control member 60C is provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, when measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A is arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object 100 to be measured, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object 100 to be measured.

[0217] The heat flux measurement device of the present invention may have a configuration in which, instead of the third heat flux control member, a second heat flux sensor and a fourth heat flux control member having a heat capacity different from that of the first heat flux control member are provided with respect to the heat flux measurement device of Embodiment 5 of the present invention. That is, in the heat flux measurement device of the present invention, when the first heat flux control member is provided only on one of the pair of heat flux detection surfaces of the first heat flux sensor, the fourth heat flux control member may be provided on both one heat flux detection surface and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0218] [Embodiment 6] The heat flux measurement device of Embodiment 6 of the present invention further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and having the same heat capacity as the first heat flux control member, and a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member.

[0219] In the heat flux measurement device of Embodiment 6 of the present invention, a third heat flux control member is provided on one of the pair of heat flux detection surfaces of the second heat flux sensor, and a fourth heat flux control member is provided on the other heat flux detection surface.

[0220] The heat flux measurement device of Embodiment 6 of the present invention is the same as the heat flux measurement device of Embodiment 2 of the present invention except for the above points.

[0221] FIG. 19 is a schematic diagram showing a state in which an example of the heat flux measurement device of Embodiment 6 of the present invention is arranged with respect to a measurement object.

[0222] The heat flux measurement device 6A shown in FIG. 19 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, a third heat flux control member 60C, and a fourth heat flux control member 60D.

[0223] In the heat flux measurement device 6A, the first heat flux control member 60A is provided only on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0224] In the heat flux measurement device 6A, with respect to the pair of heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, a third heat flux control member 60C is provided on one of the heat flux detection surfaces, and a fourth heat flux control member 60D is provided on the other heat flux detection surface. In the example shown in FIG. 19, the third heat flux control member 60C is provided on the heat flux detection surface 50Ba of the second heat flux sensor 50B, and the fourth heat flux control member 60D is provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0225] In the heat flux measurement device 6A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0226] In the heat flux measurement device 6A, in the second heat flux sensor 50B, the heat flux vector Q2 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0227] Therefore, in the heat flux measurement device 6A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 + Qex1) = Q1 - Q2 can be obtained. Thus, in the heat flux measurement device 6A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0228] In the heat flux measurement device 6A, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the measurement object 100.

[0229] On the other hand, in a heat flux measuring device 6A, a first heat flux control member 60A is provided only on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, a third heat flux control member 60C is provided on one surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, and a fourth heat flux control member 60D is provided on the other surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. When measuring the heat flux from the measurement object 100, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the measurement object 100, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the measurement object 100.

[0230] In the heat flux measuring device 6A, as a modification, the first heat flux control member 60A may be provided only on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0231] In the heat flux measuring device 6A, as a modification, the third heat flux control member 60C may be provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B, and the fourth heat flux control member 60D may be provided on the heat flux detection surface 50Ba of the second heat flux sensor 50B.

[0232] [Embodiment 7] In the heat flux measuring device according to Embodiment 7 of the present invention, a first heat flux control member is provided on one of the pair of heat flux detection surfaces of the first heat flux sensor, and a second heat flux control member is provided on the other heat flux detection surface.

[0233] In the heat flux measuring device according to Embodiment 7 of the present invention, no heat flux control member is provided on both surfaces of one heat flux detection surface and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0234] The heat flux measurement device according to Embodiment 7 of the present invention is the same as the heat flux measurement device according to Embodiment 2 of the present invention, except for the above points.

[0235] FIG. 20 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 7 of the present invention is arranged with respect to a measurement object.

[0236] The heat flux measurement device 7A shown in FIG. 20 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, and a second heat flux control member 60B.

[0237] In the heat flux measurement device 7A, with respect to a pair of heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, the first heat flux control member 60A is provided on one heat flux detection surface, and the second heat flux control member 60B is provided on the other heat flux detection surface. In the example shown in FIG. 20, the first heat flux control member 60A is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0238] In the heat flux measurement device 7A, heat flux control members are not provided on both surfaces of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0239] In the heat flux measurement device 7A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0240] In the heat flux measuring device 7A, since no heat flux control member is provided on both the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, the heat flux from the measurement object 100 flowing into the second heat flux sensor 50B becomes a heat flux vector that flows in isotropically (in FIG. 20, represented by heat flux vectors Q2 in opposite directions to each other and illustrated), and is not controlled to a heat flux vector in one direction. Therefore, in the heat flux measuring device 7A, in the second heat flux sensor 50B, there is no heat flux vector from the measurement object 100, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0241] Therefore, in the heat flux measuring device 7A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 - Q2 + Qex1) = Q1 can be obtained. In this way, in the heat flux measuring device 7A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0242] In the heat flux measuring device 7A, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the measurement object 100.

[0243] On the other hand, in a heat flux measurement device 7A, a first heat flux control member 60A is provided on one surface of a heat flux detection surface 50Aa and a heat flux detection surface 50Ab of a first heat flux sensor 50A, and a second heat flux control member 60B is provided on the other surface of the heat flux detection surface 50Aa and the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the heat flux control member is not provided on both surfaces of a heat flux detection surface 50Ba and a heat flux detection surface 50Bb of a second heat flux sensor 50B. When measuring the heat flux from a measurement object 100, the first heat flux sensor 50A is arranged such that a pair of heat flux detection surfaces 50Aa and 50Ab are present inside the measurement object 100, and the second heat flux sensor 50B may be arranged such that a pair of heat flux detection surfaces 50Ba and 50Bb are not present inside the measurement object 100.

[0244] In the heat flux measurement device 7A, as a modification, the first heat flux control member 60A may be provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B may be provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0245] [Embodiment 8] The heat flux measurement device according to Embodiment 8 of the present invention further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and an equivalent heat capacity to that of the first heat flux control member.

[0246] In the heat flux measurement device according to Embodiment 8 of the present invention, the third heat flux control member is provided only on one of the heat flux detection surfaces with respect to a pair of heat flux detection surfaces of the second heat flux sensor.

[0247] The heat flux measurement device according to Embodiment 8 of the present invention is the same as the heat flux measurement device according to Embodiment 7 of the present invention except for the above points.

[0248] FIG. 21 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 8 of the present invention is arranged with respect to a measurement object.

[0249] The heat flux measurement device 8A shown in FIG. 21 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, a second heat flux control member 60B, and a third heat flux control member 60C.

[0250] In the heat flux measurement device 8A, the first heat flux control member 60A is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0251] In the heat flux measurement device 8A, the third heat flux control member 60C is provided only on the heat flux detection surface 50Ba of the second heat flux sensor 50B.

[0252] In the heat flux measurement device 8A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0253] In the heat flux measurement device 8A, in the second heat flux sensor 50B, the heat flux vector Q2 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0254] Therefore, in the heat flux measurement device 8A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 + Qex1) = Q1 - Q2 can be obtained. Thus, in the heat flux measurement device 8A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0255] In the heat flux measurement device 8A, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the measurement object 100.

[0256] On the other hand, in a heat flux measuring device 8A, a first heat flux control member 60A is provided on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, a second heat flux control member 60B is provided on the other surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and a third heat flux control member 60C is provided only on one surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. When measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object 100 to be measured, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object 100 to be measured.

[0257] In the heat flux measuring device 8A, as a modification, the first heat flux control member 60A may be provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B may be provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0258] In the heat flux measuring device 8A, as a modification, the third heat flux control member 60C may be provided only on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0259] [Embodiment 9] The heat flux measuring device according to Embodiment 9 of the present invention further includes a third heat flux control member having a heat capacity equivalent to that of the first heat flux control member and different from that of the second heat flux sensor.

[0260] In the heat flux measuring device according to Embodiment 9 of the present invention, the third heat flux control member is provided on both surfaces of one heat flux detection surface and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0261] The heat flux measuring device according to Embodiment 9 of the present invention is the same as the heat flux measuring device according to Embodiment 7 of the present invention except for the above points.

[0262] FIG. 22 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 9 of the present invention is arranged with respect to a measurement object.

[0263] The heat flux measurement device 9A shown in FIG. 22 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, a second heat flux control member 60B, and a third heat flux control member 60C.

[0264] In the heat flux measurement device 9A, the first heat flux control member 60A is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0265] In the heat flux measurement device 9A, the third heat flux control member 60C is provided on both surfaces of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0266] In the heat flux measurement device 9A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0267] In the heat flux measurement device 9A, since the third heat flux control member 60C is provided on both surfaces of the heat flux detection surface 50Ba and the heat flux detection surface 50Bb of the second heat flux sensor 50B, the heat flux from the measurement object 100 flowing into the second heat flux sensor 50B is not controlled to a one-direction heat flux vector, but includes heat flux vectors Q2 in opposite directions to each other. Therefore, in the heat flux measurement device 9A, in the second heat flux sensor 50B, the heat flux vector Q2 from the measurement object 100 does not exist, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0268] Therefore, in the heat flux measurement device 9A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - (Q2 - Q2 + Qex1) = Q1 can be obtained. In this way, in the heat flux measurement device 9A, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0269] In the heat flux measurement device 9A, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces are present inside the measurement object 100.

[0270] On the other hand, in a heat flux measurement device such as the heat flux measurement device 9A, where the first heat flux control member 60A is provided on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, the second heat flux control member 60B is provided on the other surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, and the third heat flux control member 60C is provided on both surfaces of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, when measuring the heat flux from the measurement object 100, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are present inside the measurement object 100, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not present inside the measurement object 100.

[0271] In the heat flux measurement device 9A, as a modification, the first heat flux control member 60A may be provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B may be provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0272] [Embodiment 10] The heat flux measurement device according to Embodiment 10 of the present invention further includes a third heat flux control member having a different heat capacity from the second heat flux sensor and an equivalent heat capacity to the first heat flux control member, and a fourth heat flux control member having a different heat capacity from the second heat flux sensor and the first heat flux control member.

[0273] In the heat flux measurement device according to Embodiment 10 of the present invention, with respect to a pair of heat flux detection surfaces of the second heat flux sensor, the third heat flux control member is provided on one heat flux detection surface, and the fourth heat flux control member is provided on the other heat flux detection surface.

[0274] The heat flux measurement device according to Embodiment 10 of the present invention is the same as the heat flux measurement device according to Embodiment 7 of the present invention except for the above points.

[0275] FIG. 23 is a schematic diagram showing a state in which an example of the heat flux measurement device according to Embodiment 10 of the present invention is arranged with respect to a measurement object.

[0276] The heat flux measurement device 10A shown in FIG. 23 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, a second heat flux control member 60B, a third heat flux control member 60C, and a fourth heat flux control member 60D.

[0277] In the heat flux measurement device 10A, the first heat flux control member 60A is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0278] In the heat flux measurement device 10A, the third heat flux control member 60C is provided on the heat flux detection surface 50Ba of the second heat flux sensor 50B, and the fourth heat flux control member 60D is provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0279] In the heat flux measurement device 10A, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the negative direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0280] In the heat flux measuring device 10A, in the second heat flux sensor 50B, the heat flux vector Q2 from the object 100 to be measured exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0281] Therefore, in the heat flux measuring device 10A, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (-Q1 + Qex1)-(Q2 + Qex1)= -Q1 - Q2 can be obtained. Thus, in the heat flux measuring device 10A, when measuring the heat flux from the object 100 to be measured, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX) can be removed.

[0282] In the heat flux measuring device 10A, when measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the object 100 to be measured.

[0283] In the heat flux measuring device 10A, when measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A and the second heat flux sensor 50B are arranged such that each pair of heat flux detection surfaces is inside the object 100 to be measured. In this case, in the heat flux measuring device 10A, for the first heat flux sensor 50A, the first heat flux control member 60A is provided on the heat flux detection surface where the heat flux of the disturbance EX from the outside of the object 100 to be measured flows in, and for the second heat flux sensor 50B, it is preferable that the fourth heat flux control member 60D is provided on the heat flux detection surface where the heat flux of the disturbance EX from the outside of the object 100 to be measured flows in. In the example shown in FIG. 23, for the first heat flux sensor 50A, the first heat flux control member 60A is provided on the heat flux detection surface 50Ab where the heat flux of the disturbance EX from the outside of the object 100 to be measured flows in, and for the second heat flux sensor 50B, the fourth heat flux control member 60D is provided on the heat flux detection surface 50Bb where the heat flux of the disturbance EX from the outside of the object 100 to be measured flows in.

[0284] On the other hand, in a heat flux measuring device 10A, a first heat flux control member 60A is provided on one surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, a second heat flux control member 60B is provided on the other surface of the heat flux detection surfaces 50Aa and 50Ab of the first heat flux sensor 50A, a third heat flux control member 60C is provided on one surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B, and a fourth heat flux control member 60D is provided on the other surface of the heat flux detection surfaces 50Ba and 50Bb of the second heat flux sensor 50B. When measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A may be arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object 100 to be measured, and the second heat flux sensor 50B may be arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object 100 to be measured.

[0285] FIG. 24 is a schematic diagram showing a state in which an example of a heat flux measuring device according to Modification 1 of Embodiment 10 of the present invention is arranged with respect to an object to be measured.

[0286] The heat flux measuring device 10B shown in FIG. 24 includes a first heat flux sensor 50A, a second heat flux sensor 50B, a first heat flux control member 60A, a second heat flux control member 60B, a third heat flux control member 60C, and a fourth heat flux control member 60D.

[0287] In the heat flux measuring device 10B, when measuring the heat flux from the object 100 to be measured, the first heat flux sensor 50A is arranged such that the pair of heat flux detection surfaces 50Aa and 50Ab are inside the object 100 to be measured, and the second heat flux sensor 50B is arranged such that the pair of heat flux detection surfaces 50Ba and 50Bb are not inside the object 100 to be measured.

[0288] In the heat flux measuring device 10B, the first heat flux control member 60A is provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A, and the second heat flux control member 60B is provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A.

[0289] In the heat flux measuring device 10B, the third heat flux control member 60C is provided on the heat flux detection surface 50Ba of the second heat flux sensor 50B, and the fourth heat flux control member 60D is provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B.

[0290] In the heat flux measuring device 10B, in the first heat flux sensor 50A, the heat flux vector Q1 from the measurement object 100 exists in the positive direction, and the heat flux vector Qex1 of the disturbance EX exists in the positive direction.

[0291] In the heat flux measuring device 10B, different from the heat flux measuring device 10A, since the second heat flux sensor 50B is arranged outside the measurement object 100, in the second heat flux sensor 50B, the heat flux vector from the measurement object 100 does not exist, and the heat flux vector Qex2 of the disturbance EX exists in the positive direction.

[0292] Therefore, in the heat flux measuring device 10B, by taking the difference between the heat flux vector flowing into the first heat flux sensor 50A and the heat flux vector flowing into the second heat flux sensor 50B, a heat flux vector corresponding to (Q1 + Qex1) - Qex2 = Q1 + Qex1 - Qex2 can be obtained. Here, since Qex1 - Qex2 is often substantially close to zero, in the heat flux measuring device 10B, when measuring the heat flux from the measurement object 100, the influence of the heat flux vector of the disturbance EX (here, the heat flux vector Qex1 of the disturbance EX and the heat flux vector Qex2 of the disturbance EX) can be removed.

[0293] In the heat flux measurement device 10B, as a modification, the first heat flux control member 60A may be provided on the heat flux detection surface 50Ab of the first heat flux sensor 50A, and the second heat flux control member 60B may be provided on the heat flux detection surface 50Aa of the first heat flux sensor 50A.

[0294] In the heat flux measurement device 10B, as a modification, the third heat flux control member 60C may be provided on the heat flux detection surface 50Bb of the second heat flux sensor 50B, and the fourth heat flux control member 60D may be provided on the heat flux detection surface 50Ba of the second heat flux sensor 50B.

[0295] [Embodiment 11] The heat flux measurement device according to Embodiment 11 of the present invention includes a measurement unit having a first heat flux sensor and a second heat flux sensor, a first measurement value of the heat flux measured by the first heat flux sensor, and an operation unit that performs an operation of taking the difference from a second measurement value of the heat flux measured by the second heat flux sensor, and a display unit that displays the operation result of the operation unit.

[0296] The heat flux measurement device according to Embodiment 11 of the present invention is the same as the heat flux measurement devices according to Embodiments 2 to 10 of the present invention except for the above points.

[0297] FIG. 25 is a block diagram showing an example of the heat flux measurement device according to Embodiment 11 of the present invention.

[0298] The heat flux measurement device 11A shown in FIG. 25 includes a measurement unit 200, an operation unit 210, and a display unit 220.

[0299] The measurement unit 200 includes a first heat flux sensor 50A and a second heat flux sensor 50B.

[0300] The modes of the first heat flux sensor 50A and the second heat flux sensor 50B in the measurement unit 200 are the same as, for example, the modes shown in FIGS. 6 to 24. In the modes shown in FIGS. 6 to 24, the first heat flux control member 60A, the second heat flux control member 60B, the third heat flux control member 60C, and the fourth heat flux control member 60D are selectively provided with respect to the heat flux detection surfaces of the first heat flux sensor 50A and the second heat flux sensor 50B. These heat flux control members are also included in the measurement unit 200.

[0301] The calculation unit 210 performs a calculation to obtain the difference between the first measurement value of the heat flux measured by the first heat flux sensor 50A and the second measurement value of the heat flux measured by the second heat flux sensor 50B. As a result, the influence of the disturbance heat flux can be removed from the measurement values of the heat fluxes measured by the first heat flux sensor 50A and the second heat flux sensor 50B, so that the heat flux from the measurement object 100 can be accurately measured.

[0302] For example, when the modes of the first heat flux sensor 50A and the second heat flux sensor 50B in the measurement unit 200 are the modes shown in FIG. 6, the calculation unit 210 performs a calculation to obtain the difference between the first measurement value of the heat flux measured by the first heat flux sensor 50A and the second measurement value of the heat flux measured by the second heat flux sensor 50B, and the magnitude (absolute value) of the heat flux vector corresponding to Q1 can be obtained.

[0303] Also, when the modes of the first heat flux sensor 50A and the second heat flux sensor 50B in the measurement unit 200 are the modes shown in FIGS. 10, 11, 12, and 23, when the calculation unit 210 performs a calculation to take the difference between the first measurement value of the heat flux measured by the first heat flux sensor 50A and the second measurement value of the heat flux measured by the second heat flux sensor 50B, the absolute value of the heat flux vector corresponding to Q1 + Q2 or -Q1 - Q2 is obtained. In this case, after the calculation unit 210 performs a calculation to take the difference between the first measurement value of the heat flux measured by the first heat flux sensor 50A and the second measurement value of the heat flux measured by the second heat flux sensor 50B, the calculation unit 210 may further perform a calculation of dividing the difference result by 2. As a result of the calculation by the calculation unit 210, since a value substantially close to the magnitude (absolute value) of the heat flux vector Q1 or the heat flux vector Q2 is often obtained, the heat flux from the measurement object 100 can be accurately measured.

[0304] The display unit 220 displays the calculation result of the calculation unit 210. Thereby, the user of the heat flux measuring device 11A can easily confirm the measurement result of the heat flux from the measurement object 100 measured by the heat flux measuring device 11A.

[0305] FIG. 26 is a schematic diagram showing a state in which an example of the heat flux measuring device according to Embodiment 11 of the present invention is arranged with respect to a measurement object.

[0306] In the heat flux measuring device 11A shown in FIG. 26, when measuring the heat flux from the measurement object 100, the measurement unit 200 is arranged inside the measurement object 100.

[0307] In the heat flux measuring device 11A, when measuring the heat flux from the measurement object 100, the calculation unit 210 and the display unit 220 are arranged outside the measurement object 100.

[0308] The calculation unit 210 and the display unit 220 may form a module, for example, by being combined with a power supply, a wireless communication device, an electronic information recording medium, etc.

[0309] The heat flux measuring device 11A may further include a connection part 230 that connects the measuring part 200 and the calculation part 210.

[0310] The connection part 230 preferably has a first conductor 70A and a second conductor 70B (see FIGS. 6 to 24). In this case, the signals of the thermoelectric voltages generated by the first heat flux sensor 50A and the second heat flux sensor 50B can be transmitted to the calculation part 210 through the connection part 230.

[0311] The connection part 230 may be, for example, a pole. In this case, when the measurement object 100 is soil or the like, the measurement part 200 can be easily embedded in the measurement object 100 by inserting the pole with the measurement part 200 attached to the end into the measurement object 100.

[0312] When the connection part 230 is a pole, the pole may function as a heat flux control member.

[0313] The heat flux measuring device 11A may further include various sensors such as a temperature sensor, a humidity sensor, an illuminance sensor, a CO2 sensor, a moisture sensor, and an EC sensor.

[0314] The following content is disclosed in this specification.

[0315] <1> A first heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction, At least the first heat flux control member among the first heat flux control member and the second heat flux control member, which have different heat capacities from the first heat flux sensor and also have different heat capacities from each other, A heat flux measuring device, wherein the first heat flux control member is provided only on one of the pair of heat flux detection surfaces of the first heat flux sensor, or the first heat flux control member is provided on one of the heat flux detection surfaces and the second heat flux control member is provided on the other heat flux detection surface.

[0316] <2> The apparatus further includes a second heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction. When measuring the heat flux from the object to be measured, the first heat flux sensor and the second heat flux sensor are arranged such that the angle formed by the heat flux detection surface of the first heat flux sensor with respect to the heat flux vector of the disturbance flowing into the first heat flux sensor from the outside of the object to be measured is equal to the angle formed by the heat flux detection surface of the second heat flux sensor with respect to the heat flux vector of the disturbance flowing into the second heat flux sensor from the outside of the object to be measured. When measuring the heat flux from the object to be measured, the heat flux vector from the object to be measured flowing into the first heat flux sensor and the heat flux vector from the object to be measured flowing into the second heat flux sensor are not canceled out, and the heat flux vector of the disturbance flowing into the first heat flux sensor from the outside of the object to be measured and the heat flux vector of the disturbance flowing into the second heat flux sensor from the outside of the object to be measured are canceled out. The heat flux measuring apparatus according to <1>.

[0317] <3> When measuring the heat flux from the object to be measured, the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces is located inside the object to be measured. The heat flux measuring apparatus according to <2>.

[0318] <4> When measuring the heat flux from the object to be measured, the first heat flux sensor is arranged such that a pair of the heat flux detection surfaces is located inside the object to be measured, and the second heat flux sensor is arranged such that a pair of the heat flux detection surfaces is not located inside the object to be measured. The heat flux measuring apparatus according to <2>.

[0319] <5> The first heat flux control member is provided only on one of the heat flux detection surfaces with respect to the pair of heat flux detection surfaces of the first heat flux sensor. The heat flux measuring apparatus according to <3> or <4>.

[0320] <6> The heat flux measuring device according to <5>, wherein no heat flux control member is provided on both surfaces of one of the heat flux detection surfaces and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0321] <7> The heat flux measuring device according to <5>, further comprising a third heat flux control member having a heat capacity different from that of the second heat flux sensor and having a heat capacity equivalent to that of the first heat flux control member. The heat flux measuring device according to <5>, wherein the third heat flux control member is provided only on one of the heat flux detection surfaces with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0322] <8> When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that the respective pairs of heat flux detection surfaces are inside the object to be measured, the first heat flux control member is provided on the heat flux detection surface through which the heat flux of the disturbance from the outside of the object to be measured flows with respect to the first heat flux sensor, or the third heat flux control member is provided on the heat flux detection surface through which the heat flux of the disturbance from the outside of the object to be measured flows with respect to the second heat flux sensor. The heat flux measuring device according to <7>.

[0323] <9> The heat flux measuring device according to <5>, further comprising a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member. The heat flux measuring device according to <5>, wherein the fourth heat flux control member is provided only on one of the heat flux detection surfaces with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

[0324] <10> When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces is inside the object to be measured, for the first heat flux sensor, is the first heat flux control member provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows? Or for the second heat flux sensor, is the fourth heat flux control member provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows? The heat flux measuring device according to <9>.

[0325] <11> Further comprising a third heat flux control member having a different heat capacity from the second heat flux sensor and an equivalent heat capacity to the first heat flux control member. For the pair of heat flux detection surfaces of the second heat flux sensor, the third heat flux control member is provided on both the one heat flux detection surface and the other heat flux detection surface. The heat flux measuring device according to <5>.

[0326] <12> Further comprising a third heat flux control member having a different heat capacity from the second heat flux sensor and an equivalent heat capacity to the first heat flux control member, and a fourth heat flux control member having a different heat capacity from the second heat flux sensor and the first heat flux control member. For the pair of heat flux detection surfaces of the second heat flux sensor, the third heat flux control member is provided on the one heat flux detection surface, and the fourth heat flux control member is provided on the other heat flux detection surface. The heat flux measuring device according to <5>.

[0327] <13> For the pair of heat flux detection surfaces of the first heat flux sensor, the first heat flux control member is provided on the one heat flux detection surface, and the second heat flux control member is provided on the other heat flux detection surface. The heat flux measuring device according to <3> or <4>.

[0328] <14> The heat flux measuring device according to <13>, wherein no heat flux control member is provided on both surfaces of one of the pair of heat flux detection surfaces of the second heat flux sensor and the other heat flux detection surface.

[0329] <15> The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and the same heat capacity as that of the first heat flux control member. The heat flux measuring device according to <13>, wherein the third heat flux control member is provided only on one of the pair of heat flux detection surfaces of the second heat flux sensor.

[0330] <16> The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and the same heat capacity as that of the first heat flux control member. The heat flux measuring device according to <13>, wherein the third heat flux control member is provided on both surfaces of one of the pair of heat flux detection surfaces of the second heat flux sensor and the other heat flux detection surface.

[0331] <17> The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and the same heat capacity as that of the first heat flux control member, and a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member. The heat flux measuring device according to <13>, wherein the third heat flux control member is provided on one of the pair of heat flux detection surfaces of the second heat flux sensor, and the fourth heat flux control member is provided on the other heat flux detection surface.

[0332] <18> When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces are inside the object to be measured, for the first heat flux sensor, the first heat flux control member is provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows, and for the second heat flux sensor, the fourth heat flux control member is provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows, the heat flux measuring device according to <17>.

[0333] <19> A measurement unit having the first heat flux sensor and the second heat flux sensor; An arithmetic unit that performs an operation of taking a difference between a first measurement value of the heat flux measured by the first heat flux sensor and a second measurement value of the heat flux measured by the second heat flux sensor; A display unit that displays the operation result of the arithmetic unit, the heat flux measuring device according to any one of <2> to <18>.

Explanation of symbols

[0334] 1A, 1B, 1C, 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D, 4A, 4B, 5A, 5B, 5C, 6A, 7A, 8A, 9A, 10A, 10B, 11A Heat flux measuring device 50A First heat flux sensor 50Aa, 50Ab Heat flux detection surfaces of the first heat flux sensor 50B Second heat flux sensor 50Ba, 50Bb Heat flux detection surfaces of the second heat flux sensor 60A First heat flux control member 60B Second heat flux control member 60C Third heat flux control member 60D Fourth heat flux control member 70A First wire 70B Second wire 100 Object to be measured 200 Measurement unit 210 Arithmetic unit 220 Display unit 230 Connection unit EX external disturbance Q1, Q2 heat flux vectors from the object to be measured Qex1, Qex2 heat flux vectors of the external disturbance

Claims

1. a first heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction; at least the first heat flux control member among a first heat flux control member and a second heat flux control member, which have different heat capacities from the first heat flux sensor and also have different heat capacities from each other; a second heat flux sensor having a pair of heat flux detection surfaces facing each other in the thickness direction; and with respect to the pair of heat flux detection surfaces of the first heat flux sensor, the first heat flux control member is provided only on one of the heat flux detection surfaces, or the first heat flux control member is provided on one of the heat flux detection surfaces and the second heat flux control member is provided on the other heat flux detection surface, when measuring the heat flux from the object to be measured, the first heat flux sensor and the second heat flux sensor are arranged such that the angle formed by the heat flux detection surface of the first heat flux sensor with respect to the heat flux vector of the disturbance flowing into the first heat flux sensor from outside the object to be measured is equal to the angle formed by the heat flux detection surface of the second heat flux sensor with respect to the heat flux vector of the disturbance flowing into the second heat flux sensor from outside the object to be measured, when measuring the heat flux from the object to be measured, the heat flux vector from the object to be measured flowing into the first heat flux sensor and the heat flux vector from the object to be measured flowing into the second heat flux sensor are not canceled out, and the heat flux vector of the disturbance flowing into the first heat flux sensor from outside the object to be measured and the heat flux vector of the disturbance flowing into the second heat flux sensor from outside the object to be measured are canceled out. A heat flux measuring device characterized by this.

2. The heat flux measuring device according to claim 1, wherein when measuring the heat flux from the object to be measured, the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces is present inside the object to be measured.

3. When measuring the heat flux from the object to be measured, the first heat flux sensor is arranged such that a pair of the heat flux detection surfaces are present inside the object to be measured, and the second heat flux sensor is arranged such that a pair of the heat flux detection surfaces are not present inside the object to be measured. The heat flux measuring device according to claim 1.

4. For a pair of the heat flux detection surfaces of the first heat flux sensor, the first heat flux control member is provided only on one of the heat flux detection surfaces. The heat flux measuring device according to claim 2 or 3.

5. For a pair of the heat flux detection surfaces of the second heat flux sensor, no heat flux control member is provided on both one of the heat flux detection surfaces and the other heat flux detection surface. The heat flux measuring device according to claim 4.

6. The second heat flux sensor has a different heat capacity, and further includes a third heat flux control member having the same heat capacity as the first heat flux control member. For a pair of the heat flux detection surfaces of the second heat flux sensor, the third heat flux control member is provided only on one of the heat flux detection surfaces. The heat flux measuring device according to claim 4.

7. When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that a pair of their respective heat flux detection surfaces are present inside the object to be measured, for the first heat flux sensor, the first heat flux control member is provided on the heat flux detection surface into which the heat flux of external disturbance from outside the object to be measured flows, or for the second heat flux sensor, the third heat flux control member is provided on the heat flux detection surface into which the heat flux of external disturbance from outside the object to be measured flows. The heat flux measuring device according to claim 6.

8. The second heat flux sensor further includes a fourth heat flux control member having a different heat capacity from the first heat flux control member. The heat flux measuring device according to claim 4, wherein the fourth heat flux control member is provided only on one of the pair of heat flux detection surfaces of the second heat flux sensor.

9. When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces is inside the object to be measured, for the first heat flux sensor, the first heat flux control member is provided on the heat flux detection surface into which the heat flux of external disturbance from outside the object to be measured flows, or for the second heat flux sensor, the fourth heat flux control member is provided on the heat flux detection surface into which the heat flux of external disturbance from outside the object to be measured flows. The heat flux measuring device according to claim 8.

10. The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and having a heat capacity equivalent to that of the first heat flux control member. The heat flux measuring device according to claim 4, wherein the third heat flux control member is provided on both one of the pair of heat flux detection surfaces of the second heat flux sensor and the other heat flux detection surface.

11. The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and having a heat capacity equivalent to that of the first heat flux control member, and a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member. The heat flux measuring device according to claim 4, wherein the third heat flux control member is provided on one of the pair of heat flux detection surfaces of the second heat flux sensor, and the fourth heat flux control member is provided on the other heat flux detection surface.

12. The heat flux measuring device according to claim 2 or 3, wherein the first heat flux control member is provided on one of the pair of heat flux detection surfaces of the first heat flux sensor, and the second heat flux control member is provided on the other heat flux detection surface.

13. The heat flux measuring device according to claim 12, wherein no heat flux control member is provided on both surfaces of one of the heat flux detection surfaces and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

14. The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and equivalent to that of the first heat flux control member. The heat flux measuring device according to claim 12, wherein the third heat flux control member is provided only on one of the heat flux detection surfaces with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

15. The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and equivalent to that of the first heat flux control member. The heat flux measuring device according to claim 12, wherein the third heat flux control member is provided on both surfaces of one of the heat flux detection surfaces and the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

16. The heat flux measuring device further includes a third heat flux control member having a heat capacity different from that of the second heat flux sensor and equivalent to that of the first heat flux control member, and a fourth heat flux control member having a heat capacity different from that of the second heat flux sensor and the first heat flux control member. The heat flux measuring device according to claim 12, wherein the third heat flux control member is provided on one of the heat flux detection surfaces and the fourth heat flux control member is provided on the other heat flux detection surface with respect to the pair of heat flux detection surfaces of the second heat flux sensor.

17. When measuring the heat flux from the object to be measured, when the first heat flux sensor and the second heat flux sensor are arranged such that each pair of the heat flux detection surfaces are inside the object to be measured, for the first heat flux sensor, the first heat flux control member is provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows, and for the second heat flux sensor, the fourth heat flux control member is provided on the heat flux detection surface into which the heat flux of the disturbance from the outside of the object to be measured flows. The heat flux measurement device according to claim 16.

18. A measurement unit having the first heat flux sensor and the second heat flux sensor; An arithmetic unit that performs an operation of taking a difference between a first measurement value of the heat flux measured by the first heat flux sensor and a second measurement value of the heat flux measured by the second heat flux sensor; A display unit that displays the calculation result of the calculation unit, and the heat flux measurement device according to any one of claims 1 to 3.

Images