Sensor unit and aerial vehicle equipped with the same

Abstract

To provide a sensor unit and an aerial vehicle equipped with the sensor unit, which make it easier to identify the location of a fire at an early stage.SOLUTION: A sensor unit 20 disclosed herein is to be installed on an aerial vehicle 10 configured to fly by rotation of multiple propellers 14, where the aerial vehicle 10 flies when the multiple propellers 14 blow air toward a bottom surface of the aerial vehicle 10. The sensor unit comprises an attachment body 21 to be attached to a top surface of the aerial vehicle 10 and a sensor to be fixed to a side surface 22 of the attachment body 21, where the sensor is at least one of a smoke sensor 31 for detecting smoke and an odor sensor 41 for detecting odors, and is disposed above the propellers 14.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sensor unit and an aircraft equipped with a sensor unit. [Background technology]

[0002] Conventionally, a technology is known in which a camera is installed on an aircraft that flies by rotating multiple propellers, and the location of a fire is identified using images captured by the camera. For example, the following Patent Document 1 discloses a technology for detecting a fire based on the movement of flames and smoke in the image data captured by the camera. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-180374 A Summary of the Invention [Problem to be solved by the invention]

[0004] By the time flames and smoke can be captured by a camera, the fire may have already spread, making it difficult to pinpoint the location of the fire at an early stage with the above-mentioned configuration.

[0005] The present invention was developed in light of the above-mentioned circumstances, and has an object to provide a sensor unit and an aircraft equipped with a sensor unit that can easily identify the location of a fire at an early stage. [Means for solving the problem]

[0006] The sensor unit of the present invention is a sensor unit installed on an aircraft that flies by the rotation of multiple propellers, the aircraft flying by the multiple propellers blowing air in the direction of the underside of the aircraft, and the sensor comprises a mounting body attached to the upper surface of the aircraft and a sensor fixed to the side of the mounting body, the sensor being at least one of a smoke sensor that detects smoke and an odor sensor that detects odors, and is positioned above the propellers.

[0007] The sensor unit-equipped flying body of the present invention is a flying body that flies by the rotation of multiple propellers, and has the sensor unit installed thereon. Effect of the Invention

[0008] According to the present invention, a sensor placed higher than the propeller can detect smoke or odor without being disturbed by the wind from the propeller, which makes it easier to identify the location of a fire at an earlier stage than when it can be photographed by a camera. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a partial cross-sectional view showing an aircraft equipped with a sensor unit according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional view showing the sensor unit-equipped flying object, which corresponds to the cross section taken along the line AA in FIG. [Diagram 3] FIG. 2 is a cross-sectional view showing an aircraft equipped with a sensor unit, the cross-sectional view corresponding to the cross-section taken along the line BB in FIG. [Figure 4] FIG. 13 is a partially enlarged cross-sectional view showing a sensor unit of an aircraft equipped with a sensor unit according to another embodiment (1). [Diagram 5] FIG. 13 is a perspective view showing an aircraft equipped with a sensor unit according to another embodiment (2). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A preferred embodiment of the present invention is described below. [1] The sensor unit of the present invention is a sensor unit installed on an aircraft that flies by rotating multiple propellers, and the aircraft flies by the multiple propellers blowing air in the downward direction of the aircraft, and includes a mounting body attached to the upper surface of the aircraft and a sensor fixed to the side of the mounting body, and the sensor is at least one of a smoke sensor that detects smoke and an odor sensor that detects odor, and is located above the propeller. With this configuration, the sensor located at a position higher than the propeller can detect smoke or odor without being hindered by the wind from the propeller. This makes it easier to identify the location of a fire at an earlier stage than when it can be photographed by a camera. [2] In the sensor unit described in [1] above, at least one of the smoke sensor and the odor sensor may be arranged in four or more units around the entire circumference of the mounting body, and the angle between each of the adjacent sensors in the direction surrounding the mounting body and the center of gravity of a cross section perpendicular to the vertical direction of the mounting body may be 90 degrees or less for all adjacent sensors. With this configuration, the sensors arranged in all directions around the mounting body can detect smoke or odor and determine the direction from which the smoke or odor is coming, making it easier to identify the location of a fire at an early stage. [3] The sensor unit described in [1] or [2] above may include both the smoke sensor and the odor sensor, and the smoke sensor and the odor sensor may be provided at the same position in the vertical direction of the mounting body and arranged alternately in a direction surrounding the mounting body. With this configuration, since both the smoke sensor and the odor sensor are provided, it is possible to easily identify the location of a fire by detecting odor even if no smoke is emitted in the initial stage of a fire. Since the smoke sensor and the odor sensor are provided at the same position in the vertical direction of the mounting body, both the smoke sensor and the odor sensor can be arranged at a high position. Since the smoke sensor and the odor sensor are arranged alternately in a direction surrounding the mounting body, both smoke and odor can be detected in all directions of the mounting body. [4] In the sensor unit according to any one of [1] to [3] above, the cross section of the mounting body perpendicular to the vertical direction may be circular. With this configuration, the air resistance acting on the mounting body during flight can be reduced, thereby suppressing deterioration of fuel efficiency of the flying object. [5] The sensor unit according to any one of [1] to [4] above may be equipped with an infrared camera fixed to the mounting body. With this configuration, temperature changes can be visualized, making it easier to identify the location of a fire even when the smoke or odor is weak. [6] The sensor unit-equipped flying object of the present invention may be an flying object that flies by rotating multiple propellers and is equipped with the sensor unit described in any one of [1] to [5] above. With this configuration, the sensor unit-equipped flying object can easily reach places that are difficult to reach by traveling on the ground or places that are difficult for people to approach. The sensor placed at a higher position than the propeller can detect smoke or odors without being hindered by the wind from the propeller. Therefore, it is easier to identify the location of a fire at an early stage even in places that are difficult to reach by traveling on the ground or places that are difficult for people to approach.

[0011] <Example 1> An embodiment of the present invention will be described in detail below with reference to Figures 1 to 3. As shown in Figure 1, the sensor unit-equipped aircraft F in this embodiment includes an aircraft 10 and a sensor unit 20. The sensor unit-equipped aircraft F can be used, for example, to detect natural fires.

[0012] The aircraft 10 is an unmanned aerial vehicle that can be remotely or automatically controlled. The aircraft 10 is a drone weighing 100 g or more. A commercially available known drone may be used as the aircraft 10.

[0013] The aircraft 10 includes a main body 11, an arm 13, a propeller 14, and landing legs 15. The aircraft 10 flies by rotating the four propellers 14. Only two of the four propellers 14 are shown in FIG. 1. The four propellers 14 blow air toward the bottom of the aircraft 10. The bottom of the aircraft 10 is the direction from the top to the bottom in each drawing.

[0014] The main body 11 is provided in the center of the aircraft 10. The main body 11 includes a power supply unit, a control unit, a communication unit, etc., which are not shown.

[0015] Four arms 13 are provided. Only two of the four arms 13 are shown in Fig. 1. Each arm 13 extends horizontally outward from the main body 11. The arm 13 and the main body 11 may be integrally formed, or may be configured as separate members and connected to each other. The arm 13 rotatably supports the propeller 14.

[0016] The propeller 14 is disposed at the top end of the drone. The propeller 14 rotates by receiving power from a motor (not shown). The drone obtains lift as the propeller 14 rotates and flies. The direction and number of rotations of the propeller 14 are controlled by a control unit. The flying object 10 can ascend, descend, move forward, move backward, turn, hover, and the like in the air. The state in which the flying object 10 is moving among the states in which it is flying in the air is called a moving state, the state in which it is hovering among the states in which it is flying in the air is called a hovering state, and the state in which it is landing is called a landing state.

[0017] The landing legs 15 extend downward from the bottom surface of the flying vehicle 10. The bottom surface of the flying vehicle 10 includes the bottom surface of the main body 11 and the bottom surface of the arm 13. In the landing state, the lower ends of the landing legs 15 are in contact with the ground or the like.

[0018] The sensor unit 20 is attached to the flying body 10. The state in which the sensor unit 20 is attached to the flying body 10 is referred to as the attached state. The sensor unit 20 is installed on the upper surface 12 of the flying body 10. The upper surface of the flying body 10 includes the upper surface 12 of the main body 11, the upper surface of the arm 13, and the upper surface of the propeller 14. The sensor unit 20 is disposed in the center of the flying body 10. This allows the flying body 10 to fly stably.

[0019] The sensor unit 20 includes a mounting body 21, a smoke sensor 31, an odor sensor 41, an infrared camera 51, and an enclosure 61. The mounting body 21 is attached to the top surface 12 of the main body 11. The mounting body 21 may be attached directly to the top surface 12 of the main body 11, or may be attached via a mounting member. The mounting member may constitute a part of the sensor unit 20.

[0020] The smoke sensor 31 is a sensor device that detects smoke. The smoke sensor 31 measures the concentration of smoke contained in the air around the sensor unit 20. There is no particular restriction on the configuration of the smoke sensor 31, and various configurations can be adopted. As a method for detecting smoke, a photoelectric spot type sensor, a photoelectric separation type sensor, an ionization spot type sensor, or the like may be used.

[0021] The odor sensor 41 is a sensor device that detects odors. The odor sensor 41 detects and outputs the concentration of odor components around the installation position. There are no particular restrictions on the configuration of the odor sensor 41, and various configurations can be adopted. The odor sensor 41 may be, for example, a semiconductor sensor or a quartz crystal oscillator sensor.

[0022] The odor sensor 41 may be one that reacts to multiple odor components, or one that reacts to only one odor component. The odor components to be detected may be various, ranging from odorless ones such as carbon dioxide to odors that can be detected by humans. The odor components to be detected may be components contained in the characteristic odors that occur during fires.

[0023] The infrared camera 51 captures images of invisible heat sources using infrared rays. There are no particular restrictions on the configuration of the infrared camera 51, and various configurations can be adopted. Since the sensor unit 20 is equipped with the infrared camera 51, even when the smoke or odor is weak, a fire can be found by the image captured by the infrared camera 51.

[0024] The smoke sensor 31, the odor sensor 41, and the infrared camera 51 are fixed to the side surface 22 of the mounting body 21. By being fixed to the side surface 22 of the mounting body 21, the smoke sensor 31, the odor sensor 41, and the infrared camera 51 can be easily attached to the flying object 10 without taking up space.

[0025] The smoke sensor 31 and the odor sensor 41 are attached to the upper end of the mounting body 21. The smoke sensor 31 and the odor sensor 41 are provided at the same position in the up-down direction of the mounting body 21. The infrared camera 51 is provided below the smoke sensor 31 and the odor sensor 41. The smoke sensor 31, the odor sensor 41, and the infrared camera 51 are disposed above the propeller 14.

[0026] The surrounding portion 61 surrounds the smoke sensor 31, the smell sensor 41, and the infrared sensor. The surrounding portion 61 prevents damage to the smoke sensor 31, the smell sensor 41, and the infrared camera 51. The surrounding portion 61 has a peripheral wall 62 and an upper wall 63. The peripheral wall 62 rises upward from the upper surface 12 of the main body 11. The peripheral wall 62 covers the outer periphery of the smoke sensor 31, the smell sensor 41, and the infrared camera 51. The peripheral wall 62 is cylindrical (see FIG. 2). The upper wall 63 closes the upper end of the peripheral wall 62. The upper wall 63 covers the upper sides of the smoke sensor 31, the smell sensor 41, and the infrared camera 51. The surrounding portion 61 may be formed from a mesh material, a porous member, or the like.

[0027] The height dimension 24 of the mounting body 21 is greater than the width dimension 25 of the mounting body 21. The height dimension 24 of the mounting body 21 is the vertical dimension from the top surface to the bottom surface of the mounting body 21 in the installed state. The width dimension 25 of the mounting body 21 is the maximum horizontal dimension of the mounting body 21 in the installed state. The width dimension 25 of the mounting body 21 is the diameter of a cross section perpendicular to the up-down direction of the mounting body 21. The cross section perpendicular to the up-down direction of the mounting body 21 is referred to as the mounting body cross section 21M.

[0028] The mounting body 21 has a cylindrical shape. In the mounted state, the central axis 23 of the mounting body 21 is parallel to the vertical direction. The area of ​​the lower surface of the mounting body 21 is smaller than the area of ​​the upper surface 12 of the main body 11. As shown in FIG. 2, the side surface 22 of the mounting body 21 has a cylindrical shape. The shape of the mounting body cross section 21M is circular. The area of ​​the mounting body cross section 21M is equal from the upper end to the lower end of the mounting body 21.

[0029] As shown in Fig. 2, four smoke sensors 31 are arranged at equal intervals around the entire circumference of the side surface 22 of the mounting body 21. The four smoke sensors 31 are arranged at equal angular intervals around the center of gravity 26 of the mounting body cross section 21M and at positions that are point-symmetrical around the center of gravity 26 of the mounting body cross section 21M. The center of gravity 26 of the mounting body cross section 21M is the dynamic center of gravity when the mounting body cross section 21M is considered to be a plate with uniform density. The center of gravity 26 of the mounting body cross section 21M is on the central axis 23 of the mounting body 21.

[0030] The orientations 32 of the smoke sensors 31 differ from each other by 90 degrees. The orientations 32 of the smoke sensors 31 are along the normal to the side surface 22 of the mounting body 21 at the center point 33 of each smoke sensor 31, and are in a direction facing outward from the mounting body 21. The center point 33 of each smoke sensor 31 is the circumferential center of the surface of each smoke sensor 31 that contacts the side surface 22 of the mounting body 21.

[0031] A line segment connecting reference point 34 of adjacent smoke sensors 31 in a direction surrounding mounting body 21 and center of gravity 26 of mounting body cross section 21M is referred to as smoke sensor reference line 35. Angle 36 of all adjacent smoke sensor reference lines 35 is 90 degrees or less. Reference point 34 of smoke sensor 31 is the closest point along side surface 22 of mounting body 21 among adjacent smoke sensors 31 in a plan view seen from above.

[0032] 2, four odor sensors 41 are disposed at equal intervals around the entire circumference of the side surface 22 of the mounting body 21. The four odor sensors 41 are provided at equal angular intervals around the center of gravity 26 of the mounting body cross section 21M and at positions that are point-symmetric around the center of gravity 26 of the mounting body cross section 21M.

[0033] The orientations 42 of the odor sensors 41 differ by 90 degrees. The orientations 42 of the odor sensors 41 are along the normal to the side surface 22 of the mounting body 21 at the center point 43 of each odor sensor 41, and are in a direction facing outward from the mounting body 21. The center point 43 of each odor sensor 41 is the circumferential center of the surface of each odor sensor 41 that contacts the side surface 22 of the mounting body 21.

[0034] The line segment connecting the reference point 44 of an adjacent odor sensor 41 in the direction surrounding the mounting body 21 and the center of gravity 26 of the mounting body cross section 21M is referred to as the odor sensor reference line 45. The angle formed by the odor sensor reference lines 45 is 90 degrees or less for all adjacent odor sensor reference lines 45. The reference point 44 of the odor sensor 41 is the closest point along the side surface 22 of the mounting body 21 among the adjacent odor sensors 41 in a plan view seen from above.

[0035] The smoke sensors 31 and the odor sensors 41 are arranged alternately in a direction surrounding the mounting body 21. The smoke sensors 31 and the odor sensors 41 are arranged at equal intervals around the entire circumference of the side surface 22 of the mounting body 21. The orientation 32 of the adjacent smoke sensors 31 and the orientation 42 of the adjacent odor sensors 41 differ by 45 degrees.

[0036] 3, four infrared cameras 51 are arranged at equal intervals around the entire circumference of side surface 22 of mounting body 21. The four infrared cameras 51 are provided at equal angular intervals around center of gravity 26 of mounting body cross section 21M and at positions that are point-symmetric around center of gravity 26 of mounting body cross section 21M.

[0037] The orientations 52 of the infrared cameras 51 differ from each other by 90 degrees. The orientations 52 of the infrared cameras 51 are along the normal to the side surface 22 of the mounting body 21 at the center point 53 of each infrared camera 51, and are directions facing outward from the mounting body 21. The center point 53 of each infrared camera 51 is the circumferential center of the surface of each infrared camera 51 that contacts the side surface 22 of the mounting body 21.

[0038] A line segment connecting reference point 54 of adjacent infrared cameras 51 in the direction surrounding mounting body 21 and center of gravity 26 of mounting body cross section 21M is referred to as infrared camera reference line 55. An angle 56 formed by infrared camera reference lines 55 is 90 degrees or less for all adjacent infrared camera reference lines 55. Reference point 54 of infrared camera 51 is the closest point along side surface 22 of mounting body 21 among adjacent infrared cameras 51 in a plan view seen from above.

[0039] Next, an example of the use of the sensor unit-equipped flying object F will be described. First, the sensor unit-equipped flying object F is flown to a destination. The destination is a location where the occurrence of a fire is monitored and the location of the fire is identified. Since the sensor unit-equipped flying object F can fly over a wide area, even a small number of the sensor unit-equipped flying object F can effectively monitor the occurrence of a fire and identify the location of the fire. The destination may be a place that is difficult to reach by traveling on the ground or a place that is difficult for people to approach. The destination may be, for example, an underground area, a tunnel, a dam, a sewer, etc.

[0040] When the sensor unit-equipped flying object F reaches its destination, the sensor unit-equipped flying object F is put into a hovering state. If a fire occurs, smoke and odors rise from the fire location to a high position. The sensor unit 20 is provided on the upper surface of the flying object 10, so that the smoke and odors can be detected effectively.

[0041] Smoke and odors above the propeller 14 are less likely to be blown away by the wind generated by the propeller 14. Because the sensor unit 20 is provided at a position higher than the propeller 14, it can effectively detect smoke and odors.

[0042] Since both the smoke sensor 31 and the odor sensor 41 are provided around the entire circumference of the mounting body 21, it is easy to determine the direction of the fire location by detecting smoke or odor. The sensor unit-equipped aircraft F can determine the direction of the fire location and fly in that direction to quickly identify the fire location. In this way, the sensor unit-equipped aircraft F can effectively identify the fire location at an earlier stage than when it can be photographed by a camera.

[0043] Next, the operation and effect of the embodiment configured as described above will be described. The sensor unit 20 is installed on the flying object 10 that flies by the rotation of the four propellers 14. The flying object 10 flies by the four propellers 14 blowing air toward the lower surface of the flying object 10. The sensor unit 20 includes a mounting body 21 and a sensor. The mounting body 21 is attached to the upper surface of the flying object 10. The sensor is fixed to the side surface 22 of the mounting body 21. The sensor is both a smoke sensor 31 that detects smoke and an odor sensor 41 that detects odor. The sensor is disposed above the propeller 14. According to this configuration, the smoke sensor 31 and the odor sensor 41 that are disposed at a position higher than the propeller 14 can detect smoke and odor without being hindered by the wind of the propeller 14. This makes it easier to identify the location of a fire at an earlier stage than when it can be photographed by a camera.

[0044] The sensor unit 20 includes the odor sensor 41, and is therefore capable of detecting odors even in the early stages of a fire before smoke rises into the air. This makes it possible to effectively detect a fire in its early stages.

[0045] The sensor unit-equipped flying object F can identify the location of the fire by detecting smoke and odors even when the location of the fire cannot be imaged by the infrared camera 51 because the flying object F is far away from the location of the fire or the location of the fire is in the shadow of an obstacle.

[0046] Four smoke sensors 31 and four odor sensors 41 are arranged around the entire circumference of the mounting body 21. The angle 36 of the smoke sensor reference line 35 connecting each of the smoke sensors 31 adjacent in the direction surrounding the mounting body 21 to the center of gravity 26 of the mounting body cross section 21M is 90 degrees or less for all adjacent smoke sensors 31. The angle 46 of the odor sensor reference line 45 connecting each of the odor sensors 41 adjacent in the direction surrounding the mounting body 21 to the center of gravity 26 of the mounting body cross section 21M is 90 degrees or less for all adjacent odor sensors 41. With this configuration, smoke and odor can be detected by the smoke sensors 31 and odor sensors 41 arranged in all directions of the mounting body 21, and the direction from which the smoke and odor are generated can be determined, making it easier to identify the location of a fire at an early stage.

[0047] The smoke sensor 31 and the odor sensor 41 are provided at the same position in the vertical direction of the mounting body 21. The smoke sensor 31 and the odor sensor 41 are alternately arranged in the direction surrounding the mounting body 21. With this configuration, since both the smoke sensor 31 and the odor sensor 41 are provided, it is possible to easily identify the location of a fire at an early stage, for example, even if no smoke is emitted in the initial stage of a fire. Since the smoke sensor 31 and the odor sensor 41 are provided at the same position in the vertical direction of the mounting body 21, both the smoke sensor 31 and the odor sensor 41 can be arranged at a high position. Since the smoke sensor 31 and the odor sensor 41 are alternately arranged in the direction surrounding the mounting body 21, it is possible to detect both smoke and odor in all directions of the mounting body 21.

[0048] The cross section of the mounting body 21M has a circular shape. With this configuration, the air resistance acting on the mounting body 21 during flight can be reduced, so that deterioration of the fuel efficiency of the flying body 10 can be suppressed.

[0049] The sensor unit 20 includes an infrared camera 51 fixed to the mounting body 21. With this configuration, temperature changes can be visualized, making it easier to pinpoint the location of a fire even when the smoke or smell is weak.

[0050] <Other Examples> The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments are also included within the technical scope of the present invention. (1) In the above embodiment, the smoke sensor 31 and the odor sensor 41 are provided at the same position in the up-down direction of the mounting body 21. This is not limiting, and as shown in Fig. 4, the positions of the smoke sensor 31 and the odor sensor 41 in the up-down direction do not have to be aligned. In Fig. 4, the smoke sensor 31 is arranged above the odor sensor 41, but the smoke sensor 31 may be arranged below the odor sensor 41. The positions of the smoke sensor 31 and the odor sensor 41 in the direction surrounding the mounting body 21 are not aligned in Fig. 4, but they may be aligned. (2) In the above embodiment, one sensor unit 20 is provided on the top surface 12 of the main body 11. However, the number and installation positions of the sensor units 20 may be changed as appropriate. For example, four sensor units 20 may be installed on the rotation shaft of the propeller 14 as shown in FIG. (3) In the above embodiment, the infrared camera 51 is provided below the smoke sensor 31 and the odor sensor 41. However, the present invention is not limited to this and the infrared camera may be provided above the smoke sensor and the odor sensor. (4) The sensor unit 20 of the above embodiment may further include any one of the smoke sensor 31, the odor sensor 41, and the infrared camera 51 on the upper surface of the mounting body 21. (5) In the above embodiment, the sensor unit 20 includes the surrounding portion 61. However, the present invention is not limited to this, and the sensor unit does not have to include the surrounding portion. (6) In the above embodiment, the cross section of the mounting body 21M is circular. However, the cross section of the mounting body is not limited to this and may be polygonal, rectangular, or elongated in one direction. (7) In the above embodiment, four smell sensors 41, four smoke sensors 31, and four infrared cameras 51 are provided. This is not limiting, and the number of smell sensors, smoke sensors, and infrared cameras may be changed. For example, eight smell sensors, eight smoke sensors, and eight infrared cameras may be provided. The number of smell sensors, smoke sensors, and infrared cameras may be different. For example, eight smell sensors, eight smoke sensors, and four infrared cameras may be provided. (8) In the above embodiment, the odor sensor 41, the smoke sensor 31, and the infrared camera 51 are each provided at the same height. However, the height positions of the odor sensor, the smoke sensor, and the infrared camera may be offset in the vertical direction. Specifically, for example, the positions of the four smoke sensors may be offset in the vertical direction by one. (9) In the above embodiment, the sensor unit 20 includes both the smoke sensor 31 and the odor sensor 41. However, the present invention is not limited to this, and the sensor unit may include only one of the smoke sensor and the odor sensor. (10) In the above embodiment, the aircraft 10 has four propellers 14. However, the number of propellers of the aircraft may be two, three, five or more. (11) In the above embodiment, the aircraft 10 is a drone. However, the aircraft 10 is not limited to this, and may be a small unmanned aircraft weighing 100 g or less that can be flown by remote control or automatic pilot, a radio-controlled helicopter that can be flown by remote control, etc. (12) In the above embodiment, the sensor unit 20 may be supplied with electricity from the power supply unit of the aircraft 10. (13) The sensor unit 20 of the above embodiment may be attached to an aircraft that has already been manufactured, such as a commercially available aircraft, or may be manufactured as part of the aircraft during the manufacturing process. (14) In the above embodiment, the controller of the aircraft 10 may be provided with a control unit that controls the sensor unit 20. (15) In the above embodiment, the purpose of use of the sensor unit-equipped flying object F is illustrated. However, the purpose of use of the sensor unit-equipped flying object F may be changed. [Explanation of symbols]

[0051] 10. Flying object 11...Main body 12…Top surface 13…Arm 14…Propeller 15...Landing legs 20...Sensor unit 21...Mounting body 21M…Cross section of mounting body 22...Side 23…Central axis 24…Height dimension 25…Width dimension 26...Center of gravity 31...Smoke sensor 32…Orientation 33…Center point 34...Reference point 35…Smoke sensor reference line 36...Angle 41...Odor sensor 42…Orientation 43…Center point 44...Reference point 45…Odor sensor reference line 46...Angle 51…Infrared camera 52…Orientation 53…Center point 54...Reference point 55…Infrared camera reference line 56...Angle 61...Enclosure 62...peripheral wall 63…Upper wall F: Aircraft with sensor unit

Claims

1. A sensor unit installed on an aircraft that flies by rotating a plurality of propellers, The flying object flies by the plurality of propellers blowing air in a direction toward the underside of the flying object, A mounting body that is attached to an upper surface of the aircraft; A sensor fixed to a side surface of the mounting body, The sensor unit is at least one of a smoke sensor that detects smoke and an odor sensor that detects odor, and is disposed above the propeller.

2. At least four of the smoke sensor and the odor sensor are arranged around the entire circumference of the mounting body, The sensor unit according to claim 1 , wherein an angle formed by a line segment connecting each of adjacent sensors in a direction surrounding the mounting body with the center of gravity of a cross section perpendicular to the vertical direction of the mounting body is 90 degrees or less for all adjacent sensors.

3. The smoke sensor and the odor sensor are both provided, The sensor unit according to claim 2 , wherein the smoke sensor and the odor sensor are provided at the same position in a vertical direction of the mounting body and are alternately arranged in a direction surrounding the mounting body.

4. The sensor unit according to claim 1 , wherein a cross section of the mounting body perpendicular to the up-down direction has a circular shape.

5. The sensor unit according to claim 1 , further comprising an infrared camera fixed to the mounting body.

6. A flying object that flies by rotating multiple propellers, A sensor-unit-equipped flying object having the sensor unit according to any one of claims 1 to 5 installed thereon.

Images