sights and measuring devices

Abstract

To enhance measurement accuracy of biological information of a person being measured.SOLUTION: A sighting device used for a measuring device having a signal detection unit for detecting a biological information signal reflected from a person being measured comprises a visible index and a visible range identification unit which identifies the visible range of the index. The relative position of the index and the visible range identification unit is determined so as to form a region in which the visible range of the index identified by the visible range identification unit is included in the detection region of the signal by the signal detection unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technique for improving the accuracy of measuring biological information. [Background technology]

[0002] Techniques for acquiring biometric information of a person to be measured using non-contact means such as various sensors and radar are in practical use. For example, Patent Document 1 proposes a measuring device that improves the measurement accuracy of the biometric information of the person to be measured by illuminating a pointer within the detection range of a sensor unit that detects microwaves irradiated to the person to be measured. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6587238 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with conventional technology, if the measurement device is installed in a relatively bright place, the illuminated pointer becomes difficult to see, which may result in a decrease in the accuracy of measuring biological information.

[0005] The present invention has been made in view of the above circumstances, and provides a technique for improving the accuracy of measuring biometric information of a person to be measured. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention employs the following configuration.

[0007] One aspect of the present invention is a sight used in a measurement device having a signal detection unit that detects signals related to biological information reflected from a person to be measured, the sight including a visible index and a visible range specification unit that specifies a visible range of the index, wherein the relative positions of the index and the visible range specification unit are determined so that the visible range of the index specified by the visible range specification unit forms an area included in the signal detection range of the signal detection unit. In this way, if the index is visible within the range specified by the visible range specification unit, it can be confirmed that it is within the signal detection range of the signal detection unit, and therefore signal detection by the signal detection unit can be more reliably performed, thereby improving the measurement accuracy of the measurement device.

[0008] The indicator may be formed on the inner surface of a recess formed in an exterior member of the measuring device, and the visible range specifying unit may be an opening in the recess. The sight may further include two opposing walls, the indicator may be formed in one of the two walls, and the visible range specifying unit may be a window penetrating the other of the two walls. The visible range specifying unit may be two rod members extending from the outer surface of the exterior member of the measuring device and disposed at a position that specifies the visible range of the indicator in at least one of the azimuth and elevation directions as seen from the signal detection unit. The visible range specifying unit may be two indicators visible from outside the measuring device and disposed at a position that specifies the visible range of the indicator in the azimuth or elevation direction as seen from the signal detection unit. This allows a user of the measuring device or a person being measured to specify the signal detection range of the signal detection unit with a simple configuration. Another aspect of the present invention is a measuring device comprising the sight and a signal detection unit. The measurement device may further include an adjustment unit for changing the orientation of the sight in at least one of the azimuth and elevation directions of the signal detection unit. [Effects of the Invention]

[0009] According to the present invention, it is possible to improve the accuracy of measuring the biometric information of a person who is a measurement target. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a measurement device according to an embodiment. [Figure 2] FIG. 2A is a top view of a measurement device according to one embodiment, and FIG. 2B is a side view of the measurement device. [Figure 3] 3A and 3B are diagrams showing the relationship between the signal detection range of the antenna of the measurement device according to one embodiment and the visible range of the mark on the sight. [Figure 4] FIG. 4 is a diagram showing a schematic configuration of a measurement device according to an embodiment. [Figure 5] FIG. 5 is a diagram showing a schematic configuration of a measurement device according to one modified example. [Figure 6] FIG. 6 is a diagram showing a schematic configuration of a measurement device according to one modified example. [Figure 7] FIG. 7 is a diagram showing a schematic configuration of a measurement device according to one modified example. [Figure 8] FIG. 8 is a diagram showing a schematic configuration of a measurement device according to one modified example. [Figure 9] FIG. 9 is a diagram showing a schematic configuration of a measurement device according to one modified example. [Figure 10] FIG. 10 is a diagram showing a schematic configuration of a measurement device according to one modified example. DETAILED DESCRIPTION OF THE INVENTION

[0011] <Application example> An application example of the present invention will be described. In the conventional technology, the visibility of the pointer indicating the microwave irradiation range is affected by the environment (brightness, etc.) in which the measurement device is installed, and therefore the measurement accuracy of the biological information of the person being measured may be reduced depending on the installation environment of the measurement device.

[0012] FIG. 1 is a diagram schematically illustrating an example of use of a measuring device 100 to which the present invention is applied. In the example of use illustrated in FIG. 1, the measuring device 100 includes an antenna 102, housed within a rectangular parallelepiped exterior housing 101, for transmitting and receiving signals to acquire biometric information from a person to be measured, thereby performing so-called non-contact biometric information sensing. The signal transmitted by the antenna 102 passes through the front surface 101a of the housing 101, reaches the person to be measured, is reflected from the person to be measured, and is detected by the antenna 102, which serves as a signal detector. The frequency of the signal transmitted from the antenna 102 to the person to be measured may be in the 30 GHz to 300 GHz frequency band used for millimeter-wave radar, but other frequency bands, such as light, radio waves, sound waves, and ultrasound, may also be used. Note that while the shape of the antenna 102 is schematically illustrated as an ellipse in FIG. 1, various shapes may be used for the antenna 102. In the following description, the measurement device 100 includes an antenna 102, but a signal detection unit may be used in place of the antenna 102 depending on the frequency of the signal used in the measurement device 100. The transmission method of the signal used may be FM-CW (Frequency Modulated Continuous Wave), CW, etc. The antenna 102 may be a continuous wave or an intermittent wave. The antenna 102 may be configured as a separate transmitting antenna and a separate receiving antenna.

[0013] The measuring device 100 also includes a sight 200, which is disposed on the top surface 101b of the housing 101 and allows a user of the measuring device 100 or a person being measured to check the signal detection range (signal transmission range) of the antenna 102. The sight 200 is fixed to the top surface 101b by a mounting member (not shown). The sight 200 has a main body 201, on which a visible mark 202 and a window 203 are provided. The material of the sight 200 is not particularly limited, but it is more preferable that the sight 200 be formed from a material with a low relative dielectric constant, such as plastic, that interferes as little as possible with the signals transmitted and received by the antenna 102. The size of the window 203 is determined based on the directivity of the antenna 102 so that the mark 202 is within the signal detection range of the antenna 102 if it is located in a position where it can be seen through the window 203. The range in which the mark 202 can be seen from the window 203 and the signal detection range of the antenna 102 are determined based on the directivity of the antenna 102. The relationship between these will be discussed later.

[0014] By providing such a sight 200 as a separate unit or as an integral part of the measuring device 100, a user of the measuring device 100 or the person being measured can, with a simple configuration, identify the signal detection range of the antenna 102. This prevents the person being measured from straying from the signal detection range of the antenna 102, improving the measurement accuracy of the measuring device 100.

[0015] <Description of the embodiment> (First embodiment) A first embodiment of the technology disclosed herein will be described. First, in Fig. 1, mutually orthogonal X, Y, and Z axes are defined. In this embodiment, the housing 101 is a rectangular parallelepiped exterior member, and the X, Y, and Z axes are defined so that the YZ plane is parallel to the front surface 101a (and back surface) of the housing 101, the XY plane is parallel to the top surface 101b (and bottom surface) of the housing 101, and the XZ plane is parallel to the side surface 101c of the housing 101.

[0016] FIG. 2A shows a front view of sight 200 fixed to measuring device 100, and FIG. 2B shows a side view of sight 200. As shown in FIG. 2B, sight 200 has a flat base 200a parallel to the XY plane and two flat wall portions 200b and 200c extending from base 200a in a direction parallel to the Z axis. Wall portions 200b and 200c are located at positions spaced apart so as to face each other. Wall portion 200b is provided with a window portion 203 penetrating wall portion 200b in the X axis direction, and wall portion 200c has a mark 202 on the wall portion 200b side. If mark 200 is visible to the user of measuring device 100 and the person being measured, mark 202 can be formed using various paints. In addition, as long as the mark 202 is visible, it may be formed using well-known techniques such as a convex or concave portion formed on the surface of the wall portion 200c, an LED (Light-Emitting Diode) lamp provided on the wall portion 200c, or a sticker attached to the wall portion 200c.

[0017] As shown in FIG. 2A , window portion 203 is an elliptical window portion when viewed in the X-axis direction. Various shapes may be appropriately adopted for window portion 203 depending on the directivity of antenna 102. When window portion 203 is viewed in the X-axis direction, mark 202 is formed on wall portion 200c at a position where mark 202 can be seen so as to overlap with the intersection of the major axis and minor axis of the ellipse of window portion 203. Therefore, when sight 200 is viewed in the X-axis direction from front surface 101a of housing 101 of measuring device 100, mark 202 can be seen through window portion 203. For the sake of explanation, although FIGS. 2A and 2B show sight 200 divided into base portion 200a and wall portions 200b and 200c, base portion 200a and wall portions 200b and 200c may be formed integrally as shown in FIG. 1 .

[0018] 3A and 3B, the relationship between the range in which mark 202 is visible through window 203 and the signal detection range of antenna 102 will be described. Fig. 3A is a diagram schematically showing range 210 in which mark 202 is visible through window 203 and signal detection range 110 of antenna 102 in a top view of housing 101 of measurement device 100. Similarly, Fig. 3B is a diagram schematically showing range 210 in which mark 202 is visible through window 203 and signal detection range 110 of antenna 102 in a side view of housing 101 of measurement device 100.

[0019] The signal detection range 110 of the antenna 102 is determined based on the directivity of the antenna 102, with the center 103 of the antenna 102 receiving the signal from the person to be measured as a reference. In this embodiment, as shown in FIG. 3A, when viewed from above the housing 101 of the measuring device 100, the center 103 of the antenna 102 (in this example, the intersection of the major and minor axes of the ellipse of the antenna 102) and the It is assumed that antenna 102 and mark 202 are arranged so that center 103 of antenna 102 and mark 202 are aligned vertically in a side view of housing 101 of measuring device 100, as shown in Fig. 3B.

[0020] At this time, a range 210 in which mark 202 is visible through window 203 is formed on front surface 101a of housing 101. Furthermore, a signal detection range 110 of antenna 102 is formed on front surface 101a of housing 101. Then, an area A is formed in which at least a portion of range 210 in which mark 202 is visible is included in signal detection range 110. Therefore, if the person to be measured is within area A, signal detection by antenna 102 is possible. For example, as shown in FIGS. 3A and 3B , when measuring a person to be measured sitting on bed 300 using measuring device 100, by confirming in advance that the user can see mark 202 through window 203 from the four corners of bed 300 or from above bed 300, antenna 102 can detect signals from the person to be measured more reliably than when measurement is performed without sight 200, thereby enabling more accurate measurement results to be obtained.

[0021] 3A and 3B, in the range from front surface 101a of housing 101 to distance D1, signal detection range 110 of antenna 102 does not overlap with range 210 where mark 202 is visible through window 203. Furthermore, in the range from front surface 101a of housing 101 to distance D2, there is an area where signal detection range 110 of antenna 102 does not overlap with range 210 where mark 202 is visible through window 203. For this reason, in the area within distance D1 or distance D2 from front surface 101a of housing 101, even if mark 202 can be seen through window 203, there is a possibility that the antenna 102 will not be able to detect the signal. Therefore, by placing restrictions on the position of the person being measured, such as ensuring that the person being measured is located at a distance D1 or D2 from the front surface 101a of the housing 101 when using the measuring device 100, it is possible to further improve the measurement accuracy of the measuring device 100.

[0022] Furthermore, in the above example, the relative positions of mark 202 and window 203 are such that, when window 203 is viewed in the X-axis direction, mark 202 can be seen so as to overlap the intersection of the major and minor axes of the ellipse of window 203. However, the relative positions of mark 202 and window 203 may be changed as appropriate depending on the directivity of antenna 102. Even if center 103 of antenna 102 and mark 202 are positioned at positions offset from each other when viewed from above on housing 101 of measuring device 100, by changing the relative positions of mark 202 and window 203 depending on the directivity of antenna 102, if mark 202 can be seen through window 203, it becomes possible to detect a signal from the person being measured by antenna 102 and obtain more accurate measurement results.

[0023] (Second embodiment) Next, a second embodiment of the technology disclosed herein will be described. In the measuring device 100 according to the first embodiment, the sight 200 is configured as a separate body from the measuring device 100. However, it is also possible to configure the sight as an integral part of the measuring device.

[0024] FIG. 4 shows an example of a measuring device 1100 according to this embodiment. As shown in FIG. 4, in the measuring device 1100, an antenna 1102 is disposed in a housing 1101, which is a rectangular parallelepiped exterior member. A recess 1204 is formed on a front surface 1101a of the housing 1101, where a portion of the front surface 1101a is recessed in the X-axis direction. The recess 1204 has an elliptical opening 1203 similar to the window portion 203 of the first embodiment, and a bottom surface 1204a having a shape corresponding to the shape of the opening 1203. A mark 1202 corresponding to the mark 202 of the first embodiment is formed on the bottom surface 1204a, which is a portion of the inner surface of the recess 1204.

[0025] Furthermore, in this embodiment, as in the first embodiment, the antenna 102 and the mark 202 are arranged so that the center 1103 of the antenna 1102 and the mark 1202 are approximately overlapping when viewed from the top of the housing 1101 of the measuring device 1100, and so that the center 103 of the antenna 1102 and the mark 1202 are aligned vertically when viewed from the side of the housing 1101 of the measuring device 1100.

[0026] In this embodiment, the opening 1203 of the recess 1204 corresponds to the window 203 of the first embodiment, the mark 1202 of the recess 1204 corresponds to the mark 202 of the first embodiment, and the recess 1204 having the opening 1203 and the mark 1202 functions as a sight corresponding to the sight 200 of the first embodiment. This makes it possible to determine whether or not a user of the measuring device 1100 or a person to be measured is within the signal detection range of the antenna 1102 based on whether or not the mark 1202 can be seen through the opening 1203 of the recess 1204.

[0027] Therefore, in this embodiment, as in the example of the first embodiment, when measuring a person to be measured using the measuring device 1100, by confirming in advance that the user can see the mark 1202 through the opening 1203 of the recess 1204, it is possible to more reliably detect a signal from the person to be measured using the antenna 1102 than when measuring without using a configuration such as the recess 1204, and to obtain more accurate measurement results.

[0028] Furthermore, in measuring device 1100 of this embodiment, recess 1204 that functions as a sight is formed in part of front surface 1101a of housing 1101, so mark 1202 can be placed closer to the center of antenna 1102 than in the first embodiment. As a result, the overlapping area between the visible mark range and the antenna signal detection range becomes larger than in the first embodiment, and as a result, it becomes possible to more reliably detect signals from antenna 1102 for the person being measured, thereby further improving the measurement accuracy of measuring device 1100.

[0029] In the above example, the recess 1204 is formed as a hollow elliptical cylinder, but the inner shape of the recess 1204 is not limited to this. For example, the inner surface of the recess 1204 may be formed by a paraboloid, and the mark 1202 may be provided on a part of the paraboloid.

[0030] <Other> The above-described embodiments merely exemplify configuration examples of the present invention. The present invention is not limited to the specific embodiments described above, and various modifications are possible within the scope of the technical concept. Modifications of the above-described embodiments will be described below. Note that the above-described embodiments and the modifications described below can be implemented in appropriate combination.

[0031] (Variation 1) A measuring device 2100 according to Modification 1 will be described below. Fig. 5 shows an example of measuring device 2100 according to this modification. As shown in Fig. 5, measuring device 2100 has antenna 2102 disposed inside housing 2101, which is a rectangular parallelepiped exterior member. In measuring device 2100, as in the above embodiment, a signal transmitted by antenna 2102 passes through front surface 2101a of housing 2101, reaches the person being measured, is reflected by the person being measured, and is detected by antenna 2102.

[0032] Furthermore, three cylindrical rod members 2201, 2202, and 2203 are provided on the top surface 2101b, which is the outer surface of the housing 2101, and extend from the top surface 2101b in the Z-axis direction. The rod members 2201 to 2203 may be provided detachably with respect to the housing 2101, or may be provided integrally with the housing 2101. On the top surface 2101b, two of the three rod members 2201 to 2203, the rod members 2201 and 2202, are arranged closer to the front surface 2101a than the other rod member 2203. In this modification, the three rod members 220 1 to 2203 function as sights corresponding to the sight 200 of the first embodiment.

[0033] When viewed from above, the rod member 2203 is arranged at a position that substantially overlaps the center of the antenna 2102, similar to the marks 202 and 1202. When viewed from above, the rod members 2201 and 2202 are positioned so that the range in which the rod member 2203 is visible between the rod members 2201 and 2202 when viewed in the X-axis direction from the front surface 2101a side of the housing 2101 is included in the signal detection range of the antenna 2102. As a result, the visible range of the rod member 2203, which is used to identify the rod member 2203 as being within the signal detection range of the antenna 2102 in the azimuth angle direction of the antenna 2102 (the angle of rotation about the Z-axis in the XY plane) is determined by the rod members 2201 and 2202.

[0034] 3A in the first embodiment, an area can be formed on the front surface 2101a side of the housing 2101, between the rod members 2201 and 2202, where the rod member 2203 is visible, and this area is included in the signal detection range of the antenna 2102. Therefore, if the person to be measured is within this area, the antenna 2102 can detect the signal.

[0035] According to this modification, it is expected that the measurement accuracy of the measurement device can be improved by placing the person to be measured within the signal detection range of the antenna, with a configuration simpler than that of the sight 200 of the first embodiment.

[0036] (Variation 2) Next, a measuring device 3100 according to Modification 2 will be described. Fig. 6 shows an example of measuring device 3100 according to this modification. As shown in Fig. 6, measuring device 3100 has antenna 3102 disposed inside housing 3101, which is a rectangular parallelepiped exterior member. In measuring device 3100, as in the above-described embodiment and modifications, a signal transmitted by antenna 3102 passes through front surface 3101a of housing 3101, reaches the person being measured, is reflected by the person being measured, and is detected by antenna 3102.

[0037] Furthermore, three cylindrical rod members 3201, 3202, and 3203 extending in the Y-axis direction from side surface 3101c are provided on side surface 3101c, which is the outer surface of housing 3101. Rod members 3201 to 3203 may be provided detachably with respect to housing 3101, or may be provided integrally with housing 3101. On side surface 3101c, two of the three rod members 3201 to 3203, rod members 3201 and 3202, are positioned closer to front surface 3101a than the other rod member 3203. In this modification, the three rod members 3201 to 3203 function as sights corresponding to sight 200 of the first embodiment.

[0038] In a side view of housing 3101, rod member 3203 is disposed at a position that substantially overlaps the center of antenna 3102. Furthermore, in a side view of housing 3101, rod members 3201 and 3202 are positioned so that the range in which rod member 3203 is visible between rod members 3201 and 3202 when viewed in the X-axis direction from front surface 3101a of housing 3101 is included in the signal detection range of antenna 3102. As a result, the visible range of rod member 3203, which is required to identify it as being within the signal detection range of antenna 3102 in the direction of the elevation angle of antenna 3102 (the angle of rotation about the Y-axis in the XZ plane) is determined by rod members 3201 and 3202.

[0039] 3B in the first embodiment, an area can be formed on the front surface 3101a side of the housing 3101, between the rod members 3201 and 3202, where the rod member 3203 is visible, and this area is included in the signal detection range of the antenna 3102. Therefore, if the person to be measured is within this area, the signal can be detected by the antenna 3102.

[0040] According to this modification, as with the first modification, it is expected that the measurement accuracy of the measurement device can be improved by placing the person to be measured within the signal detection range of the antenna with a simpler configuration than the sight 200 of the first embodiment.

[0041] (Variation 3) Next, a measuring device 4100 according to Modification 3 will be described. Fig. 7 shows an example of measuring device 4100 according to this modification. As shown in Fig. 7, measuring device 4100 has antenna 4102 disposed inside housing 4101, which is a rectangular parallelepiped exterior member. In measuring device 4100, as in the above-described embodiment and modifications, a signal transmitted by antenna 4102 passes through front surface 4101a of housing 4101, reaches the person being measured, is reflected by the person being measured, and is detected by antenna 4102.

[0042] Two marks 4201 and 4202 are provided on front surface 4101a of housing 4101. Marks 4201 and 4202 are provided near the upper end of front surface 4101a. A cylindrical rod member 4203 extending in the Z-axis direction from top surface 4101b is provided on top surface 4101b of housing 4101. Marks 4201 and 4202 are indicators that replace rod members 2201 and 2202 of Modification 1, and are indicators that define imaginary boundary lines 4211 and 4212 in the azimuth angle direction (angle of rotation about the Z-axis in the XY plane) of antenna 4120 when viewing rod member 4203 to check the signal detection range of antenna 4102. These imaginary boundary lines 4211 and 4212 can be considered to be lines that pass through marks 4201 and 4202 and extend in the Z-axis direction. Any shape may be adopted for the marks 4201 and 4202 as long as the marks 4201 and 4202 are visible. In this modification, the two marks 4201 and 4202 and the rod member 4203 function as a sight corresponding to the sight 200 of the first embodiment.

[0043] When viewed from above, the rod member 4203 is disposed at a position that substantially overlaps the center of the antenna 4102, similar to the rod member 2203 described above. Furthermore, when viewed from above, the marks 4201 and 4202 are positioned so that the range in which the rod member 4203 is visible between imaginary boundary lines 4211 and 4212 defined by the marks 4201 and 4202 when viewed in the X-axis direction from the front surface 4101a side of the housing 4101 is included in the signal detection range in the azimuth angle direction of the antenna 4102. Therefore, the visible range of the rod member 4203 for identifying it as being within the signal detection range of the antenna 4102 in the azimuth angle direction of the antenna 4102 (the angle of rotation about the Z-axis in the XY plane) is determined by the imaginary boundary lines 4211 and 4212 defined by the marks 4201 and 4202. As a result, in this modification, as in modification 1, an area can be formed on the front surface 4101a side of the housing 4101, where the range in which the rod member 4203 is visible is between imaginary boundaries 4211 and 4212 defined by the marks 4201 and 4202, and the area is included in the signal detection range of the antenna 4102. Therefore, if the person to be measured is within this area, signal detection by the antenna 4102 becomes possible.

[0044] According to this modification, it is expected that the measurement accuracy of the measurement device can be improved by placing the person to be measured within the signal detection range of the antenna, with a configuration simpler than that of the sight 200 of the first embodiment.

[0045] (Variation 4) Next, a measuring device 5100 according to a fourth modification will be described. Fig. 8 shows an example of the measuring device 5100 according to this modification. As shown in Fig. 8, in the measuring device 5100, an antenna 5102 is arranged inside a housing 5101, which is a rectangular parallelepiped exterior member. In the measuring device 5100, as in the above-described embodiment and modifications, a signal transmitted from the antenna 5102 passes through the front surface 5101a of the housing 5101 and reaches the person to be measured, and is then picked up by the person to be measured. It is reflected and detected by antenna 5102.

[0046] Two marks 5201 and 5202 are provided on front surface 5101a of housing 5101. Marks 5201 and 5202 are provided near one horizontal end (the right end in the figure) of front surface 5101a. A cylindrical rod member 5203 extending in the Y-axis direction from side surface 5101c is provided on side surface 5101c of housing 5101. Marks 5201 and 5202 are indicators similar to marks 4201 and 4202 of Modification 3, and are indicators that define imaginary boundary lines 5211 and 5212 in the elevation angle direction (the angle of rotation about the Y-axis in the XZ plane) when rod member 5203 is viewed to check the signal detection range of antenna 5102. These imaginary boundary lines 5211 and 5212 can be considered to be lines that pass through marks 5201 and 5202 and extend in the Y-axis direction. Any shape may be adopted for the marks 5201 and 5202 as long as the marks 5201 and 5202 are visible. In this modification, the two marks 5201 and 5202 and the rod member 5203 function as a sight corresponding to the sight 200 of the first embodiment.

[0047] In a side view of the housing 5101, the rod member 5203 is disposed at a position that substantially overlaps the center of the antenna 5102, similar to the rod member 3203 described above. In addition, in a side view of the housing 5101, the positions of the marks 5201 and 5202 are set at positions such that the range in which the rod member 5203 is visible between imaginary boundary lines 5211 and 5212 determined by the marks 5201 and 5202 when viewed in the X-axis direction from the front surface 5101a side of the housing 5101 is included in the signal detection range of the antenna 5102. Therefore, the visible range of the rod member 5203 for identifying it as being within the signal detection range of the antenna 5102 in the direction of the elevation angle of the antenna 5102 (the angle of rotation about the Y-axis in the XZ plane) is determined by the imaginary boundary lines 5211 and 5212 determined by the marks 5201 and 5202. As a result, in this modification, as in modification 3, an area can be formed on the front surface 5101a side of the housing 5101, where the range in which the rod member 5203 is visible is between imaginary boundaries 5211 and 5212 defined by the marks 5201 and 5202, and the area is included in the signal detection range of the antenna 5102. Therefore, if the person to be measured is within this area, the signal can be detected by the antenna 5102.

[0048] According to this modification, it is expected that the measurement accuracy of the measurement device can be improved by placing the person to be measured within the signal detection range of the antenna, with a configuration simpler than that of the sight 200 of the first embodiment.

[0049] (Variation 5) Next, a measuring device 6100 according to Modification 5 will be described. Fig. 9 shows an example of measuring device 6100 according to this modification. As shown in Fig. 9, in measuring device 6100, antenna 6102 is arranged inside housing 6101, which is a rectangular parallelepiped exterior member. In measuring device 6100, as in the above embodiment, a signal transmitted by antenna 6102 passes through front surface 6101a of housing 6101, reaches the person to be measured, is reflected by the person to be measured, and is detected by antenna 6102.

[0050] In this modification, the walls 200b and 200c constituting the sight 200 of the first embodiment are configured as separate walls 6210 and 6220. A window 6203 corresponding to the window 203 of the first embodiment is formed in the wall 6210, and a mark 6202 corresponding to the mark 202 of the first embodiment is formed in the wall 6220. The walls 6210 and 6220 are fixed to the upper surface 6101b of the housing 6101 using mounting members (not shown). Note that the mounting members can be realized using well-known technology, and therefore detailed description thereof will be omitted. In this modification, the two walls 6210 and 6220 function as a sight corresponding to the sight 200 of the first embodiment.

[0051] When the wall portions 6210 and 6220 are fixed to the upper surface 6101b, the relationship between the mark 6202, the window portion 6203, and the center of the antenna 6102 corresponds to the relationship between the mark 202, the window portion 203, and the center of the antenna 102 in the first embodiment. Therefore, on the front surface 6101a side of the housing 6101, an area is formed in which the range in which the mark 6202 is visible through the window portion 6203 is included in the signal detection range of the antenna 6102. Therefore, if the person to be measured is within this area, signal detection by the antenna 6102 becomes possible.

[0052] According to this modification, with a configuration similar to that of the sight 200 of the first embodiment, it is expected that the person to be measured will be placed within the signal detection range of the antenna, thereby improving the measurement accuracy of the measurement device.

[0053] (Variation 6) Next, a measuring device 7100 according to Modification 6 will be described. Fig. 10 shows an example of the measuring device 7100 according to this modification. As shown in Fig. 10, the measuring device 7100 has the same configuration as the measuring device 100 and the sight 200 according to the first embodiment. Therefore, in the following description, the same components as those in the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

[0054] In this modification, the measuring device 7100 includes a flat base 7400 and a cylindrical support 7300 for supporting the housing 101 to which the sight 200 is fixed. The measuring device 7100 further includes an adjustment unit 7200 for changing the orientation of the housing 101 and the orientation of the sight 200 fixed to the housing 101 in the azimuth direction (the angle of rotation about the Z axis in the XY plane) and the elevation direction (the angle of rotation about the Y axis in the XZ plane). As an example, the adjustment unit 7200 rotates the housing 101 around the Y axis and the Z axis. The rotation mechanism of the adjustment unit 7200 can be realized using well-known technology, and therefore a detailed description thereof will be omitted here. The adjustment unit 7200 may also be configured to change the orientation of the sight 200 in at least one of the azimuth direction and the elevation direction of the antenna 102.

[0055] This allows the orientation of the sight 200 to be changed to match the position of the person being measured during measurement, so that the signal detection range of the antenna can be changed according to the usage environment of the measuring device 7100, and the person being measured can be placed within the signal detection range of the antenna, which is expected to improve the measurement accuracy of the measuring device.

[0056] (Variation 7) Next, a measurement device according to Modification 7 will be described. In this modification, components similar to those in the above embodiment are designated by the same reference numerals, and detailed descriptions thereof will be omitted. In this modification, as an example, an infrared sensor is provided instead of the mark 202 in the sight 200 of the above first embodiment. Furthermore, the wall portion 200b in which the window portion 203 is formed is made of a material that is difficult to transmit or substantially blocks the infrared light used in the infrared sensor. By using the sight 200 configured in this manner, the measurement device 100 can detect a person within the signal detection range of the antenna 102 using the infrared sensor and notify the person using a lamp or speaker (not shown). This allows the user of the measurement device 100 or the person being measured to use the sight 200 to confirm whether they are within the signal detection range of the antenna 102. As a result, in this modification, the antenna 102 can more reliably detect signals from the person being measured, thereby obtaining more accurate measurement results, compared to measurements performed without the sight 200.

[0057] <Appendix 1> A sight (200) used in a measurement device (100) having a signal detection unit (102) that detects a signal related to biological information reflected from a person to be measured, Visible indicators (202) and a visible range specifying unit (203) for specifying a visible range of the index; and The relative position of the index and the visible range specifying unit is determined so that the visible range of the index specified by the visible range specifying unit forms an area included in the detection range of the signal by the signal detecting unit. A sight characterized by: [Explanation of symbols]

[0058] 100 measuring device, 102 antenna, 200 sight, 202 mark, 203 window

Claims

1. A sight used in a measurement device having a signal detection unit that detects a signal related to biological information reflected from a person to be measured, Visible indicators and Two wall portions facing each other; a visible range specifying unit that specifies a visible range of the index; and the indicator is formed on one of the two wall portions, a relative position between the index and the visible range specifying unit is determined so that the visible range of the index specified by the visible range specifying unit forms an area included in a detection range of the signal by the signal detection unit; the visible range specifying portion is a window portion that penetrates the other of the two wall portions, A sight characterized by:

2. A sighting device comprising the sighting device according to claim 1 and the signal detection unit. A measuring device characterized by:

3. The optical sight further includes an adjustment unit for changing the orientation of the optical sight in at least one of the azimuth angle direction and the elevation angle direction as viewed from the signal detection unit.

3. The measuring device according to claim 2.

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